Commit Graph

747 Commits

Author SHA1 Message Date
Wei Yongjun
3d5a019d57 sctp: Fix the SNMP number of SCTP_MIB_CURRESTAB
RFC3873 defined SCTP_MIB_CURRESTAB:
  sctpCurrEstab OBJECT-TYPE
    SYNTAX         Gauge32
    MAX-ACCESS     read-only
    STATUS         current
    DESCRIPTION
         "The number of associations for which the current state is
         either ESTABLISHED, SHUTDOWN-RECEIVED or SHUTDOWN-PENDING."
    REFERENCE
         "Section 4 in RFC2960 covers the SCTP   Association state
         diagram."

If the T4 RTO timer expires many times(timeout), the association will enter
CLOSED state, so we should dec the number of SCTP_MIB_CURRESTAB, not inc the
number of SCTP_MIB_CURRESTAB.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-09 14:32:24 -07:00
Vlad Yasevich
02015180e2 sctp: shrink sctp_tsnmap some more by removing gabs array
The gabs array in the sctp_tsnmap structure is only used
in one place, sctp_make_sack().  As such, carrying the
array around in the sctp_tsnmap and thus directly in
the sctp_association is rather pointless since most
of the time it's just taking up space.  Now, let
sctp_make_sack create and populate it and then throw
it away when it's done.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-08 14:19:01 -07:00
Vlad Yasevich
8e1ee18c33 sctp: Rework the tsn map to use generic bitmap.
The tsn map currently use is 4K large and is stuck inside
the sctp_association structure making memory references REALLY
expensive.  What we really need is at most 4K worth of bits
so the biggest map we would have is 512 bytes.   Also, the
map is only really usefull when we have gaps to store and
report.  As such, starting with minimal map of say 32 TSNs (bits)
should be enough for normal low-loss operations.  We can grow
the map by some multiple of 32 along with some extra room any
time we receive the TSN which would put us outside of the map
boundry.  As we close gaps, we can shift the map to rebase
it on the latest TSN we've seen.  This saves 4088 bytes per
association just in the map alone along savings from the now
unnecessary structure members.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-08 14:18:39 -07:00
Denis V. Lunev
e41b5368e0 ipv6: added net argument to ICMP6_INC_STATS_BH
Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-08 11:14:13 -07:00
Vlad Yasevich
e69c4e0f12 sctp: correctly save sctp_adaptation from parameter.
The INIT perameter carries the adapatation value in network-byte
order.  We need to store it in host byte order as expected
by data types and the user API.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2008-10-01 11:34:16 -04:00
Vlad Yasevich
96cd0d3d71 sctp: enable cookie-echo retransmission transport switch
This patch enables cookie-echo retransmission transport switch
feature. If COOKIE-ECHO retransmission happens, it will be sent
to the address other than the one last sent to.

Signed-off-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2008-10-01 11:34:16 -04:00
Wei Yongjun
8190f89dfd sctp: Fix the SNMP counter of SCTP_MIB_OUTOFBLUES
RFC3873 defined SCTP_MIB_OUTOFBLUES:

 sctpOutOfBlues OBJECT-TYPE
   SYNTAX         Counter32
   MAX-ACCESS     read-only
   STATUS         current
   DESCRIPTION
        "The number of out of the blue packets received by the host.
        An out of the blue packet is an SCTP packet correctly formed,
        including the proper checksum, but for which the receiver was
        unable to identify an appropriate association."
   REFERENCE
        "Section 8.4 in RFC2960 deals with the Out-Of-The-Blue
         (OOTB) packet definition and procedures."

But OOTB packet INIT, INIT-ACK and SHUTDOWN-ACK(COOKIE-WAIT or
COOKIE-ECHOED state) are not counted by SCTP_MIB_OUTOFBLUES.

Case 1(INIT):

Endpoint A               Endpoint B
(CLOSED)                 (CLOSED)

 INIT     ---------->
          <----------    ABORT

Case 2(INIT-ACK):

Endpoint A               Endpoint B
(CLOSED)                 (CLOSED)

 INIT-ACK  ---------->
           <----------   ABORT

Case 3(SHUTDOWN-ACK):

Endpoint A               Endpoint B
(CLOSED)                 (CLOSED)

          <----------    INIT
 SHUTDOWN-ACK  ---------->
           <----------   SHUTDOWN-COMPLETE

Case 4(SHUTDOWN-ACK):

Endpoint A               Endpoint B
(CLOSED)                 (COOKIE-ECHOED)

 SHUTDOWN-ACK  ---------->
           <----------   SHUTDOWN-COMPLETE

This patch fixed the problem.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2008-10-01 11:34:16 -04:00
Wei Yongjun
536428a9b9 sctp: Fix to start T5-shutdown-guard timer while enter SHUTDOWN-SENT state
RFC 4960: Section 9.2
The sender of the SHUTDOWN MAY also start an overall guard timer
'T5-shutdown-guard' to bound the overall time for the shutdown
sequence.  At the expiration of this timer, the sender SHOULD abort
the association by sending an ABORT chunk.  If the 'T5-shutdown-
guard' timer is used, it SHOULD be set to the recommended value of 5
times 'RTO.Max'.

The timer 'T5-shutdown-guard' is used to counter the overall time
for shutdown sequence, and it's start by the sender of the SHUTDOWN.
So timer 'T5-shutdown-guard' should be start when we send the first
SHUTDOWN chunk and enter the SHUTDOWN-SENT state, not start when we
receipt of the SHUTDOWN primitive and enter SHUTDOWN-PENDING state.

If 'T5-shutdown-guard' timer is start at SHUTDOWN-PENDING state, the
association may be ABORT while data is still transmitting.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2008-10-01 11:34:16 -04:00
Vlad Yasevich
52cae8f06b sctp: try harder to figure out address family when checking wildcards
sctp_is_any() function that is used to check for wildcard addresses
only looks at the address itself to determine the address family.
This function is used in the API to check the address passed in from
the user.  If the user simply zerroes out the sockaddr_storage and
pass that in, we'll end up failing.  So, let's try harder to determine
the address family by also checking the socket if it's possible.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2008-10-01 11:33:06 -04:00
Neil Horman
c226ef9b83 sctp: reduce memory footprint of sctp_chunk structure
sctp_chunks should be put on a diet.  This is some of the low hanging
fruit that we can strip out.  Changes all the __s8/__u8 flags to
bitfields.  Saves 12 bytes per chunk.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2008-10-01 11:33:06 -04:00
Vlad Yasevich
845b8eda4d sctp: Retransmit list is ineligable for missing indications
Chunks placed on the retransmit list are marked as inelegible
for fast retrasnmission.   Since missing indications determine
when fast reransmission is done, there is not point in calling
sctp_mark_missing() on the retransmit list since those chunks
will not be marked.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2008-10-01 11:33:06 -04:00
Vlad Yasevich
ab5216a5bd sctp: Optimize SFR-CACC transport list walking during SACK processing
There is a possibility of walking the transport list twice during
SACK processing when doing SFR-CACC algorithm.  We can restructure
the code to only do this once.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2008-10-01 11:33:06 -04:00
Vlad Yasevich
2cd9b822bf sctp: Only mark chunks as missing when there are gaps
Frist small step in optimizing SACK processing.   Do not call
sctp_mark_missing() when there are no gaps reported and thus
not missing chunks.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2008-10-01 11:33:06 -04:00
David S. Miller
b262e60309 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:

	drivers/net/wireless/ath9k/core.c
	drivers/net/wireless/ath9k/main.c
	net/core/dev.c
2008-10-01 06:12:56 -07:00
Wei Yongjun
ba0166708e sctp: Fix kernel panic while process protocol violation parameter
Since call to function sctp_sf_abort_violation() need paramter 'arg' with
'struct sctp_chunk' type, it will read the chunk type and chunk length from
the chunk_hdr member of chunk. But call to sctp_sf_violation_paramlen()
always with 'struct sctp_paramhdr' type's parameter, it will be passed to
sctp_sf_abort_violation(). This may cause kernel panic.

   sctp_sf_violation_paramlen()
     |-- sctp_sf_abort_violation()
        |-- sctp_make_abort_violation()

This patch fixed this problem. This patch also fix two place which called
sctp_sf_violation_paramlen() with wrong paramter type.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-30 05:32:24 -07:00
David S. Miller
43f59c8939 net: Remove __skb_insert() calls outside of skbuff internals.
This minor cleanup simplifies later changes which will convert
struct sk_buff and friends over to using struct list_head.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-21 21:28:51 -07:00
Vlad Yasevich
add52379dd sctp: Fix oops when INIT-ACK indicates that peer doesn't support AUTH
If INIT-ACK is received with SupportedExtensions parameter which
indicates that the peer does not support AUTH, the packet will be
silently ignore, and sctp_process_init() do cleanup all of the
transports in the association.
When T1-Init timer is expires, OOPS happen while we try to choose
a different init transport.

The solution is to only clean up the non-active transports, i.e
the ones that the peer added.  However, that introduces a problem
with sctp_connectx(), because we don't mark the proper state for
the transports provided by the user.  So, we'll simply mark
user-provided transports as ACTIVE.  That will allow INIT
retransmissions to work properly in the sctp_connectx() context
and prevent the crash.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-18 16:28:27 -07:00
Vlad Yasevich
0ef46e285c sctp: do not enable peer features if we can't do them.
Do not enable peer features like addip and auth, if they
are administratively disabled localy.  If the peer resports
that he supports something that we don't, neither end can
use it so enabling it is pointless.  This solves a problem
when talking to a peer that has auth and addip enabled while
we do not.  Found by Andrei Pelinescu-Onciul <andrei@iptel.org>.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-18 16:27:38 -07:00
Vlad Yasevich
a3028b8ed1 sctp: set the skb->ip_summed correctly when sending over loopback.
Loopback used to clobber the ip_summed filed which sctp then used
to figure out if it needed to do checksumming or not.  Now that
loopback doesn't do that any more, sctp needs to set the ip_summed
field correctly.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-18 02:48:25 -07:00
Vlad Yasevich
d97240552c sctp: fix random memory dereference with SCTP_HMAC_IDENT option.
The number of identifiers needs to be checked against the option
length.  Also, the identifier index provided needs to be verified
to make sure that it doesn't exceed the bounds of the array.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-27 16:09:49 -07:00
Vlad Yasevich
328fc47ea0 sctp: correct bounds check in sctp_setsockopt_auth_key
The bonds check to prevent buffer overlflow was not exactly
right.  It still allowed overflow of up to 8 bytes which is
sizeof(struct sctp_authkey).

Since optlen is already checked against the size of that struct,
we are guaranteed not to cause interger overflow either.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-27 16:08:54 -07:00
Vlad Yasevich
30c2235cbc sctp: add verification checks to SCTP_AUTH_KEY option
The structure used for SCTP_AUTH_KEY option contains a
length that needs to be verfied to prevent buffer overflow
conditions.  Spoted by Eugene Teo <eteo@redhat.com>.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-25 15:16:19 -07:00
Vlad Yasevich
5e739d1752 sctp: fix potential panics in the SCTP-AUTH API.
All of the SCTP-AUTH socket options could cause a panic
if the extension is disabled and the API is envoked.

Additionally, there were some additional assumptions that
certain pointers would always be valid which may not
always be the case.

This patch hardens the API and address all of the crash
scenarios.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-21 03:34:25 -07:00
Brian Haley
191cd58250 netns: Add network namespace argument to rt6_fill_node() and ipv6_dev_get_saddr()
ipv6_dev_get_saddr() blindly de-references dst_dev to get the network
namespace, but some callers might pass NULL.  Change callers to pass a
namespace pointer instead.

Signed-off-by: Brian Haley <brian.haley@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-14 15:33:21 -07:00
Herbert Xu
f880374c2f sctp: Drop ipfargok in sctp_xmit function
The ipfragok flag controls whether the packet may be fragmented
either on the local host on beyond.  The latter is only valid on
IPv4.

In fact, we never want to do the latter even on IPv4 when PMTU is
enabled.  This is because even though we can't fragment packets
within SCTP due to the prtocol's inherent faults, we can still
fragment it at IP layer.  By setting the DF bit we will improve
the PMTU process.

RFC 2960 only says that we SHOULD clear the DF bit in this case,
so we're compliant even if we set the DF bit.  In fact RFC 4960
no longer has this statement.

Once we make this change, we only need to control the local
fragmentation.  There is already a bit in the skb which controls
that, local_df.  So this patch sets that instead of using the
ipfragok argument.

The only complication is that there isn't a struct sock object
per transport, so for IPv4 we have to resort to changing the
pmtudisc field for every packet.  This should be safe though
as the protocol is single-threaded.

Note that after this patch we can remove ipfragok from the rest
of the stack too.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-03 21:15:08 -07:00
Linus Torvalds
2284284281 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
  netns: fix ip_rt_frag_needed rt_is_expired
  netfilter: nf_conntrack_extend: avoid unnecessary "ct->ext" dereferences
  netfilter: fix double-free and use-after free
  netfilter: arptables in netns for real
  netfilter: ip{,6}tables_security: fix future section mismatch
  selinux: use nf_register_hooks()
  netfilter: ebtables: use nf_register_hooks()
  Revert "pkt_sched: sch_sfq: dump a real number of flows"
  qeth: use dev->ml_priv instead of dev->priv
  syncookies: Make sure ECN is disabled
  net: drop unused BUG_TRAP()
  net: convert BUG_TRAP to generic WARN_ON
  drivers/net: convert BUG_TRAP to generic WARN_ON
2008-07-26 20:17:56 -07:00
Ilpo Järvinen
547b792cac net: convert BUG_TRAP to generic WARN_ON
Removes legacy reinvent-the-wheel type thing. The generic
machinery integrates much better to automated debugging aids
such as kerneloops.org (and others), and is unambiguous due to
better naming. Non-intuively BUG_TRAP() is actually equal to
WARN_ON() rather than BUG_ON() though some might actually be
promoted to BUG_ON() but I left that to future.

I could make at least one BUILD_BUG_ON conversion.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-25 21:43:18 -07:00
Ulrich Drepper
a677a039be flag parameters: socket and socketpair
This patch adds support for flag values which are ORed to the type passwd
to socket and socketpair.  The additional code is minimal.  The flag
values in this implementation can and must match the O_* flags.  This
avoids overhead in the conversion.

The internal functions sock_alloc_fd and sock_map_fd get a new parameters
and all callers are changed.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#include <fcntl.h>
#include <stdio.h>
#include <unistd.h>
#include <netinet/in.h>
#include <sys/socket.h>

#define PORT 57392

/* For Linux these must be the same.  */
#define SOCK_CLOEXEC O_CLOEXEC

int
main (void)
{
  int fd;
  fd = socket (PF_INET, SOCK_STREAM, 0);
  if (fd == -1)
    {
      puts ("socket(0) failed");
      return 1;
    }
  int coe = fcntl (fd, F_GETFD);
  if (coe == -1)
    {
      puts ("fcntl failed");
      return 1;
    }
  if (coe & FD_CLOEXEC)
    {
      puts ("socket(0) set close-on-exec flag");
      return 1;
    }
  close (fd);

  fd = socket (PF_INET, SOCK_STREAM|SOCK_CLOEXEC, 0);
  if (fd == -1)
    {
      puts ("socket(SOCK_CLOEXEC) failed");
      return 1;
    }
  coe = fcntl (fd, F_GETFD);
  if (coe == -1)
    {
      puts ("fcntl failed");
      return 1;
    }
  if ((coe & FD_CLOEXEC) == 0)
    {
      puts ("socket(SOCK_CLOEXEC) does not set close-on-exec flag");
      return 1;
    }
  close (fd);

  int fds[2];
  if (socketpair (PF_UNIX, SOCK_STREAM, 0, fds) == -1)
    {
      puts ("socketpair(0) failed");
      return 1;
    }
  for (int i = 0; i < 2; ++i)
    {
      coe = fcntl (fds[i], F_GETFD);
      if (coe == -1)
        {
          puts ("fcntl failed");
          return 1;
        }
      if (coe & FD_CLOEXEC)
        {
          printf ("socketpair(0) set close-on-exec flag for fds[%d]\n", i);
          return 1;
        }
      close (fds[i]);
    }

  if (socketpair (PF_UNIX, SOCK_STREAM|SOCK_CLOEXEC, 0, fds) == -1)
    {
      puts ("socketpair(SOCK_CLOEXEC) failed");
      return 1;
    }
  for (int i = 0; i < 2; ++i)
    {
      coe = fcntl (fds[i], F_GETFD);
      if (coe == -1)
        {
          puts ("fcntl failed");
          return 1;
        }
      if ((coe & FD_CLOEXEC) == 0)
        {
          printf ("socketpair(SOCK_CLOEXEC) does not set close-on-exec flag for fds[%d]\n", i);
          return 1;
        }
      close (fds[i]);
    }

  puts ("OK");

  return 0;
}
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Signed-off-by: Ulrich Drepper <drepper@redhat.com>
Acked-by: Davide Libenzi <davidel@xmailserver.org>
Cc: Michael Kerrisk <mtk.manpages@googlemail.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-24 10:47:27 -07:00
Adrian Bunk
4d6971e909 sctp: remove sctp_assoc_proc_exit()
Commit 20c2c1fd6c
(sctp: add sctp/remaddr table to complete RFC remote address table OID)
added an unused sctp_assoc_proc_exit() function that seems to have been 
unintentionally created when copying the assocs code.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-22 14:21:30 -07:00
Adrian Bunk
abd0b198ea sctp: make sctp_outq_flush() static
sctp_outq_flush() can now become static.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-22 14:20:45 -07:00
YOSHIFUJI Hideaki
721499e893 netns: Use net_eq() to compare net-namespaces for optimization.
Without CONFIG_NET_NS, namespace is always &init_net.
Compiler will be able to omit namespace comparisons with this patch.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-19 22:34:43 -07:00
Vlad Yasevich
845525a642 sctp: Update sctp global memory limit allocations.
Update sctp global memory limit allocations to be the same as TCP.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-18 23:08:21 -07:00
Harvey Harrison
336d3262df sctp: remove unnecessary byteshifting, calculate directly in big-endian
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-18 23:07:09 -07:00
Vlad Yasevich
4e54064e0a sctp: Allow only 1 listening socket with SO_REUSEADDR
When multiple socket bind to the same port with SO_REUSEADDR,
only 1 can be listining.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-18 23:06:32 -07:00
Vlad Yasevich
23b29ed80b sctp: Do not leak memory on multiple listen() calls
SCTP permits multiple listen call and on subsequent calls
we leak he memory allocated for the crypto transforms.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-18 23:06:07 -07:00
Vlad Yasevich
7dab83de50 sctp: Support ipv6only AF_INET6 sockets.
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-18 23:05:40 -07:00
Florian Westphal
6d0ccbac68 sctp: Prevent uninitialized memory access
valgrind reports uninizialized memory accesses when running
sctp inside the network simulation cradle simulator:

 Conditional jump or move depends on uninitialised value(s)
    at 0x570E34A: sctp_assoc_sync_pmtu (associola.c:1324)
    by 0x57427DA: sctp_packet_transmit (output.c:403)
    by 0x5710EFF: sctp_outq_flush (outqueue.c:824)
    by 0x5710B88: sctp_outq_uncork (outqueue.c:701)
    by 0x5745262: sctp_cmd_interpreter (sm_sideeffect.c:1548)
    by 0x57444B7: sctp_side_effects (sm_sideeffect.c:976)
    by 0x5744460: sctp_do_sm (sm_sideeffect.c:945)
    by 0x572157D: sctp_primitive_ASSOCIATE (primitive.c:94)
    by 0x5725C04: __sctp_connect (socket.c:1094)
    by 0x57297DC: sctp_connect (socket.c:3297)

 Conditional jump or move depends on uninitialised value(s)
    at 0x575D3A5: mod_timer (timer.c:630)
    by 0x5752B78: sctp_cmd_hb_timers_start (sm_sideeffect.c:555)
    by 0x5754133: sctp_cmd_interpreter (sm_sideeffect.c:1448)
    by 0x5753607: sctp_side_effects (sm_sideeffect.c:976)
    by 0x57535B0: sctp_do_sm (sm_sideeffect.c:945)
    by 0x571E9AE: sctp_endpoint_bh_rcv (endpointola.c:474)
    by 0x573347F: sctp_inq_push (inqueue.c:104)
    by 0x572EF93: sctp_rcv (input.c:256)
    by 0x5689623: ip_local_deliver_finish (ip_input.c:230)
    by 0x5689759: ip_local_deliver (ip_input.c:268)
    by 0x5689CAC: ip_rcv_finish (dst.h:246)

#1 is due to "if (t->pmtu_pending)".
8a4794914f "[SCTP] Flag a pmtu change request"
suggests it should be initialized to 0.

#2 is the heartbeat timer 'expires' value, which is uninizialised, but
test by mod_timer().
T3_rtx_timer seems to be affected by the same problem, so initialize it, too.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-18 23:04:39 -07:00
Florian Westphal
c4e85f82ed sctp: Don't abort initialization when CONFIG_PROC_FS=n
This puts CONFIG_PROC_FS defines around the proc init/exit functions
and also avoids compiling proc.c if procfs is not supported.
Also make SCTP_DBG_OBJCNT depend on procfs.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-18 23:03:44 -07:00
Pavel Emelyanov
de0744af1f mib: add net to NET_INC_STATS_BH
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-16 20:31:16 -07:00
Pavel Emelyanov
5c52ba170f sock: add net to prot->enter_memory_pressure callback
The tcp_enter_memory_pressure calls NET_INC_STATS, but doesn't
have where to get the net from.

I decided to add a sk argument, not the net itself, only to factor
all the required sock_net(sk) calls inside the enter_memory_pressure 
callback itself.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-16 20:28:10 -07:00
Pavel Emelyanov
7c73a6faff mib: add net to IP_INC_STATS_BH
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-16 20:20:11 -07:00
Pavel Emelyanov
dcfc23cac1 mib: add struct net to ICMP_INC_STATS_BH
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-14 23:05:29 -07:00
David S. Miller
7c3ceb4a40 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:

	drivers/net/wireless/iwlwifi/iwl-3945.c
	net/mac80211/mlme.c
2008-07-08 16:30:17 -07:00
Vlad Yasevich
3888e9efc9 sctp: Mark the tsn as received after all allocations finish
If we don't have the buffer space or memory allocations fail,
the data chunk is dropped, but TSN is still reported as received.
This introduced a data loss that can't be recovered.  We should
only mark TSNs are received after memory allocations finish.
The one exception is the invalid stream identifier, but that's
due to user error and is reported back to the user.

This was noticed by Michael Tuexen.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08 02:28:39 -07:00
Vlad Yasevich
ecbed6a419 sctp: Mark GET_PEER|LOCAL_ADDR_OLD deprecated.
Socket options SCTP_GET_PEER_ADDR_OLD, SCTP_GET_PEER_ADDR_NUM_OLD,
SCTP_GET_LOCAL_ADDR_OLD, and SCTP_GET_PEER_LOCAL_ADDR_NUM_OLD
have been replaced by newer versions a since 2005.  It's time
to officially deprecate them and schedule them for removal.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-01 20:06:22 -07:00
David S. Miller
1b63ba8a86 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:

	drivers/net/wireless/iwlwifi/iwl4965-base.c
2008-06-28 01:19:40 -07:00
David S. Miller
735ce972fb sctp: Make sure N * sizeof(union sctp_addr) does not overflow.
As noticed by Gabriel Campana, the kmalloc() length arg
passed in by sctp_getsockopt_local_addrs_old() can overflow
if ->addr_num is large enough.

Therefore, enforce an appropriate limit.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-20 22:04:34 -07:00
Vlad Yasevich
0f474d9bc5 sctp: Kill unused variable in sctp_assoc_bh_rcv()
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-20 10:34:47 -07:00
Vlad Yasevich
2e3216cd54 sctp: Follow security requirement of responding with 1 packet
RFC 4960, Section 11.4. Protection of Non-SCTP-Capable Hosts

When an SCTP stack receives a packet containing multiple control or
DATA chunks and the processing of the packet requires the sending of
multiple chunks in response, the sender of the response chunk(s) MUST
NOT send more than one packet.  If bundling is supported, multiple
response chunks that fit into a single packet MAY be bundled together
into one single response packet.  If bundling is not supported, then
the sender MUST NOT send more than one response chunk and MUST
discard all other responses.  Note that this rule does NOT apply to a
SACK chunk, since a SACK chunk is, in itself, a response to DATA and
a SACK does not require a response of more DATA.

We implement this by not servicing our outqueue until we reach the end
of the packet.  This enables maximum bundling.  We also identify
'response' chunks and make sure that we only send 1 packet when sending
such chunks.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-19 16:08:18 -07:00
Wei Yongjun
7115e632f9 sctp: Validate Initiate Tag when handling ICMP message
This patch add to validate initiate tag and chunk type if verification
tag is 0 when handling ICMP message.

RFC 4960, Appendix C. ICMP Handling

ICMP6) An implementation MUST validate that the Verification Tag
contained in the ICMP message matches the Verification Tag of the peer.
If the Verification Tag is not 0 and does NOT match, discard the ICMP
message.  If it is 0 and the ICMP message contains enough bytes to
verify that the chunk type is an INIT chunk and that the Initiate Tag
matches the tag of the peer, continue with ICMP7.  If the ICMP message
is too short or the chunk type or the Initiate Tag does not match,
silently discard the packet.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-19 16:07:48 -07:00
Pavel Emelyanov
3d00fb9eb1 sctp: fix error path in sctp_proc_init
After the sctp_remaddr_proc_init failed, the proper rollback is
not the sctp_remaddr_proc_exit, but the sctp_assocs_proc_exit.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-17 15:54:14 -07:00
David S. Miller
caea902f72 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:

	drivers/net/wireless/rt2x00/Kconfig
	drivers/net/wireless/rt2x00/rt2x00usb.c
	net/sctp/protocol.c
2008-06-16 18:25:48 -07:00
Vlad Yasevich
319fa2a24f sctp: Correclty set changeover_active for SFR-CACC
Right now, any time we set a primary transport we set
the changeover_active flag.  As a result, we invoke SFR-CACC
even when there has been no changeover events.

Only set changeover_active, when there is a true changeover
event, i.e. we had a primary path and we are changing to
another transport.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-16 17:00:29 -07:00
Wei Yongjun
80896a3584 sctp: Correctly cleanup procfs entries upon failure.
This patch remove the proc fs entry which has been created if fail to
set up proc fs entry for the SCTP protocol.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-16 16:59:55 -07:00
Brian Haley
7d06b2e053 net: change proto destroy method to return void
Change struct proto destroy function pointer to return void.  Noticed
by Al Viro.

Signed-off-by: Brian Haley <brian.haley@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-14 17:04:49 -07:00
David S. Miller
65b53e4cc9 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:

	drivers/net/tg3.c
	drivers/net/wireless/rt2x00/rt2x00dev.c
	net/mac80211/ieee80211_i.h
2008-06-10 02:22:26 -07:00
Vlad Yasevich
7bfe8bdb80 sctp: Fix problems with the new SCTP_DELAYED_ACK code
The default sack frequency should be 2.  Also fix copy/paste
error when updating all transports.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-09 15:45:05 -07:00
Vlad Yasevich
b9031d9d87 sctp: Fix ECN markings for IPv6
Commit e9df2e8fd8 ("[IPV6]: Use
appropriate sock tclass setting for routing lookup.") also changed the
way that ECN capable transports mark this capability in IPv6.  As a
result, SCTP was not marking ECN capablity because the traffic class
was never set.  This patch brings back the markings for IPv6 traffic.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-04 12:40:15 -07:00
Vlad Yasevich
8b750ce54b sctp: Flush the queue only once during fast retransmit.
When fast retransmit is triggered by a sack, we should flush the queue
only once so that only 1 retransmit happens.  Also, since we could
potentially have non-fast-rtx chunks on the retransmit queue, we need
make sure any chunks eligable for fast retransmit are sent first
during fast retransmission.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Tested-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-04 12:39:36 -07:00
Vlad Yasevich
62aeaff5cc sctp: Start T3-RTX timer when fast retransmitting lowest TSN
When we are trying to fast retransmit the lowest outstanding TSN, we
need to restart the T3-RTX timer, so that subsequent timeouts will
correctly tag all the packets necessary for retransmissions.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Tested-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-04 12:39:11 -07:00
Vlad Yasevich
a646523481 sctp: Correctly implement Fast Recovery cwnd manipulations.
Correctly keep track of Fast Recovery state and do not reduce
congestion window multiple times during sucht state.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Tested-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-04 12:38:43 -07:00
Gui Jianfeng
159c6bea37 sctp: Move sctp_v4_dst_saddr out of loop
There's no need to execute sctp_v4_dst_saddr() for each
iteration, just move it out of loop.

Signed-off-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-04 12:38:07 -07:00
Gui Jianfeng
4141ddc02a sctp: retran_path update bug fix
If the current retran_path is the only active one, it should
update it to the the next inactive one.

Signed-off-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-04 12:37:33 -07:00
YOSHIFUJI Hideaki
e51171019b [SCTP]: Fix NULL dereference of asoc.
Commit 7cbca67c07 ("[IPV6]: Support
Source Address Selection API (RFC5014)") introduced NULL dereference
of asoc to sctp_v6_get_saddr in net/sctp/ipv6.c.
Pointed out by Johann Felix Soden <johfel@users.sourceforge.net>.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-06-05 04:02:30 +09:00
David S. Miller
63fe46da9c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:

	drivers/net/wireless/iwlwifi/iwl-4965-rs.c
	drivers/net/wireless/rt2x00/rt61pci.c
2008-05-15 00:34:44 -07:00
Patrick McHardy
c1cc678ada sctp: Fix use of uninitialized pointer
Introduced by c4492586 (sctp: Add address type check while process
paramaters of ASCONF chunk):

net/sctp/sm_make_chunk.c: In function 'sctp_process_asconf':
net/sctp/sm_make_chunk.c:2828: warning: 'addr_param' may be used uninitialized in this function
net/sctp/sm_make_chunk.c:2828: note: 'addr_param' was declared here

Signed-off-by: Patrick McHardy <kaber@trash.net>
Acked-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-05-13 23:25:00 -07:00
Wei Yongjun
c4492586a6 sctp: Add address type check while process paramaters of ASCONF chunk
If socket is create by AF_INET type, add IPv6 address to asoc will cause
kernel panic while packet is transmitted on that transport.

This patch add address type check before process paramaters of ASCONF
chunk. If peer is not support this address type, return with error
invald parameter.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-05-12 03:11:48 -07:00
Wei Yongjun
6e40a915de sctp: Do not enable peer IPv6 address support on PF_INET socket
If socket is create by PF_INET type, it can not used IPv6 address to
send/recv DATA, So we can not used IPv6 address even if peer tell us it
support IPv6 address.
This patch fix to only enabled peer IPv6 address support on PF_INET6 socket.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-05-12 03:11:43 -07:00
Neil Horman
20c2c1fd6c sctp: add sctp/remaddr table to complete RFC remote address table OID
Add support for RFC3873 remote address table OID.

      +--(5) sctpAssocRemAddrTable
      |   |
      |   |--(-) sctpAssocId (shared index)
      |   |
      |   +--(1) sctpAssocRemAddrType (index)
      .   |
      .   +--(2) sctpAssocRemAddr (index)
      .   |
          +--(3) sctpAssocRemAddrActive
          |
          +--(4) sctpAssocRemAddrHBActive
          |
          +--(5) sctpAssocRemAddrRTO
          |
          +--(6) sctpAssocRemAddrMaxPathRtx
          |
          +--(7) sctpAssocRemAddrRtx
          |
          +--(8) sctpAssocRemAddrStartTime

This patch places all the requsite data in /proc/net/sctp/remaddr.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-05-09 15:14:50 -07:00
Vlad Yasevich
88a0a948e7 sctp: Support the new specification of sctp_connectx()
The specification of sctp_connectx() has been changed to return
an association id.  We've added a new socket option that will
return the association id as the return value from the setsockopt()
call.  The library that implements sctp_connectx() interface will
implement both socket options.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-05-09 15:14:11 -07:00
Wei Yongjun
d364d9276b sctp: Bring SCTP_DELAYED_ACK socket option into API compliance
Brings delayed_ack socket option set/get into line with the latest ietf
socket extensions API draft, while maintaining backwards compatibility.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-05-09 15:13:26 -07:00
Pavel Emelyanov
5e659e4cb0 [NET]: Fix heavy stack usage in seq_file output routines.
Plan C: we can follow the Al Viro's proposal about %n like in this patch.
The same applies to udp, fib (the /proc/net/route file), rt_cache and 
sctp debug. This is minus ~150-200 bytes for each.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-24 01:02:16 -07:00
Gui Jianfeng
8b73a07c8f SCTP: Initialize partial_bytes_acked to 0, when all of the data is acked.
According to RFC4960 7.2.2, 
When all of the data transmitted by the sender has
been acknowledged by the recerver, partial_bytes_acked is initialized to 0.

This patch conforms to rfc requirement. 
Without this fix, cwnd might be error incremented.

Signed-off-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com>
Acked-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-17 14:22:18 -07:00
David S. Miller
df39e8ba56 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:

	drivers/net/ehea/ehea_main.c
	drivers/net/wireless/iwlwifi/Kconfig
	drivers/net/wireless/rt2x00/rt61pci.c
	net/ipv4/inet_timewait_sock.c
	net/ipv6/raw.c
	net/mac80211/ieee80211_sta.c
2008-04-14 02:30:23 -07:00
Gui Jianfeng
765ff02e89 [SCTP]: Remove an unused parameter from sctp_cmd_hb_timer_update
The 'asoc' parameter to sctp_cmd_hb_timer_update() is unused, and
we can remove it.

Signed-off-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-12 18:55:12 -07:00
Robert P. J. Day
9dbc15f055 [SCTP]: "list_for_each()" -> "list_for_each_entry()" where appropriate.
Replacing (almost) all invocations of list_for_each() with
list_for_each_entry() tightens up the code and allows for the deletion
of numerous list iterator variables that are no longer necessary.

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-12 18:54:24 -07:00
Neil Horman
30e9356007 [SCTP]: Correct /proc/net/assocs formatting error
Recently I posted a patch to add some informational items to
/proc/net/sctp/assocs.  All the information is correct, but because
of how the seqfile show operation is laid out, some of the formatting
is backwards.  This patch corrects that formatting, so that the new
information appears at the end of each line, rather than in the middle.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-12 18:53:48 -07:00
Pavel Emelyanov
a40a7d15ba [SCTP]: IPv4 vs IPv6 addresses mess in sctp_inet[6]addr_event.
All IP addresses that are present in a system are duplicated on
struct sctp_sockaddr_entry. They are linked in the global list
called sctp_local_addr_list. And this struct unions IPv4 and IPv6
addresses.

So, there can be rare case, when a sockaddr_in.sin_addr coincides
with the corresponding part of the sockaddr_in6 and the notifier
for IPv4 will carry away an IPv6 entry.

The fix is to check the family before comparing the addresses.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-12 18:40:38 -07:00
Vlad Yasevich
ab38fb04c9 [SCTP]: Fix compiler warning about const qualifiers
Fix 3 warnings about discarding const qualifiers:

net/sctp/ulpevent.c:862: warning: passing argument 1 of 'sctp_event2skb' discards qualifiers from pointer target type
net/sctp/sm_statefuns.c:4393: warning: passing argument 1 of 'SCTP_ASOC' discards qualifiers from pointer target type
net/sctp/socket.c:5874: warning: passing argument 1 of 'cmsg_nxthdr' discards qualifiers from pointer target type

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-12 18:40:06 -07:00
Gui Jianfeng
f4ad85ca3e [SCTP]: Fix protocol violation when receiving an error lenght INIT-ACK
When receiving an error length INIT-ACK during COOKIE-WAIT,
a 0-vtag ABORT will be responsed. This action violates the
protocol apparently. This patch achieves the following things.
1 If the INIT-ACK contains all the fixed parameters, use init-tag
  recorded from INIT-ACK as vtag.
2 If the INIT-ACK doesn't contain all the fixed parameters,
  just reflect its vtag.

Signed-off-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-12 18:39:34 -07:00
Wei Yongjun
72da7b3860 [SCTP]: Add check for hmac_algo parameter in sctp_verify_param()
RFC 4890 has the following text:

  The HMAC algorithm based on SHA-1 MUST be supported and
  included in the HMAC-ALGO parameter.

As a result, we need to check in sctp_verify_param() that HMAC_SHA1 is
present in the list.  If not, we should probably treat this as a
protocol violation.

It should also be a protocol violation if the HMAC parameter is empty.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-12 18:39:19 -07:00
YOSHIFUJI Hideaki
996b1dbadc [SCTP]: Use snmp_mib_{init,free}().
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-10 03:50:13 -07:00
Gui Jianfeng
eab2e0b2ec SCTP: Remove useless assignment from __sctp_rcv_lookup_endpoint
Signed-off-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-10 02:00:23 -07:00
Li Zefan
935a7f6e4d SCTP: fix wrong debug counting of bind_bucket
Should not count it if the allocation of the object
is failed.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-10 01:58:06 -07:00
Li Zefan
e8c38751be SCTP: fix wrong debug counting of datamsg
Should not count it if the allocation of this object
failed.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-10 01:57:24 -07:00
Denis V. Lunev
5677242f43 [NETNS]: Inet control socket should not hold a namespace.
This is a generic requirement, so make inet_ctl_sock_create namespace
aware and create a inet_ctl_sock_destroy wrapper around
sk_release_kernel.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-03 14:28:30 -07:00
Denis V. Lunev
eee4fe4ded [INET]: Let inet_ctl_sock_create return sock rather than socket.
All upper protocol layers are already use sock internally.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-03 14:27:58 -07:00
Denis V. Lunev
8258175c81 [SCTP]: Replace socket with sock for SCTP control socket.
Signed-off-by: Denis V. Lunev <den@openvz.org>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-03 14:27:26 -07:00
Denis V. Lunev
4ffe0225e0 [SCTP]: Use inet_ctl_sock_create for control socket creation.
sk->sk_proc->(un)hash is noop right now, so the unification is correct.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-03 14:26:36 -07:00
Pavel Emelyanov
bdcde3d71a [SOCK]: Drop inuse pcounter from struct proto (v2).
An uppercut - do not use the pcounter on struct proto.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-28 16:39:33 -07:00
Ilpo Järvinen
bc09dff198 [SCTP]: Remove sctp_add_cmd_sf wrapper bloat
With a was number of callsites sctp_add_cmd_sf wrapper bloats
kernel by some amount. Due to unlikely tracking allyesconfig,
with the initial result were around ~7kB (thus caught my
attention) while a non-debug config produced only ~2.3kB effect.

I (ij) proposed first a patch to uninline it but Vlad responded
with a patch that removed the only sctp_add_cmd call which is
wrapped by sctp_add_cmd_sf (I wasn't sure if I could do that).
I did minor cleanup to Vlad's patch.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-27 17:54:29 -07:00
YOSHIFUJI Hideaki
3b1e0a655f [NET] NETNS: Omit sock->sk_net without CONFIG_NET_NS.
Introduce per-sock inlines: sock_net(), sock_net_set()
and per-inet_timewait_sock inlines: twsk_net(), twsk_net_set().
Without CONFIG_NET_NS, no namespace other than &init_net exists.
Let's explicitly define them to help compiler optimizations.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-26 04:39:55 +09:00
YOSHIFUJI Hideaki
c346dca108 [NET] NETNS: Omit net_device->nd_net without CONFIG_NET_NS.
Introduce per-net_device inlines: dev_net(), dev_net_set().
Without CONFIG_NET_NS, no namespace other than &init_net exists.
Let's explicitly define them to help compiler optimizations.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-26 04:39:53 +09:00
YOSHIFUJI Hideaki
7cbca67c07 [IPV6]: Support Source Address Selection API (RFC5014).
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-25 10:24:01 +09:00
Florian Westphal
80445cfb28 [SCTP]: Remove redundant wrapper functions.
sctp_datamsg_free and sctp_datamsg_track are just aliases for
sctp_datamsg_put and sctp_chunk_hold, respectively.

Saves 32 Bytes on x86.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-23 22:47:08 -07:00
Florian Westphal
2444844cef [SCTP]: Replace char msg[] with static const char[].
133886    2004     220  136110   213ae sctp.new/sctp.o
134018    2004     220  136242   21432 sctp.old/sctp.o

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-23 22:46:34 -07:00
David S. Miller
a25606c845 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2008-03-21 03:42:24 -07:00
Vlad Yasevich
270637abff [SCTP]: Fix a race between module load and protosw access
There is a race is SCTP between the loading of the module
and the access by the socket layer to the protocol functions.
In particular, a list of addresss that SCTP maintains is
not initialized prior to the registration with the protosw.
Thus it is possible for a user application to gain access
to SCTP functions before everything has been initialized.
The problem shows up as odd crashes during connection
initializtion when we try to access the SCTP address list.

The solution is to refactor how we do registration and
initialize the lists prior to registering with the protosw.
Care must be taken since the address list initialization
depends on some other pieces of SCTP initialization.  Also
the clean-up in case of failure now also needs to be refactored.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Acked-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-20 15:17:14 -07:00
David S. Miller
577f99c1d0 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:

	drivers/net/wireless/rt2x00/rt2x00dev.c
	net/8021q/vlan_dev.c
2008-03-18 00:37:55 -07:00
Al Viro
bc92dd194d [SCTP]: fix misannotated __sctp_rcv_asconf_lookup()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-17 22:47:32 -07:00
Al Viro
e6f1cebf71 [NET] endianness noise: INADDR_ANY
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-17 22:44:53 -07:00
Chidambar 'ilLogict' Zinnoury
22626216c4 [SCTP]: Fix local_addr deletions during list traversals.
Since the lists are circular, we need to explicitely tag
the address to be deleted since we might end up freeing
the list head instead.  This fixes some interesting SCTP
crashes.

Signed-off-by: Chidambar 'ilLogict' Zinnoury <illogict@online.fr>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-11 18:05:02 -07:00
Harvey Harrison
0dc47877a3 net: replace remaining __FUNCTION__ occurrences
__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-05 20:47:47 -08:00
Eric Dumazet
ee6b967301 [IPV4]: Add 'rtable' field in struct sk_buff to alias 'dst' and avoid casts
(Anonymous) unions can help us to avoid ugly casts.

A common cast it the (struct rtable *)skb->dst one.

Defining an union like  :
union {
     struct dst_entry *dst;
     struct rtable *rtable;
};
permits to use skb->rtable in place.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-05 18:30:47 -08:00
Neil Horman
219b99a9ed [SCTP]: Bring MAX_BURST socket option into ietf API extension compliance
Brings max_burst socket option set/get into line with the latest ietf
socket extensions api draft, while maintaining backwards
compatibility.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-05 13:44:46 -08:00
Gui Jianfeng
140ee9603c SCTP: Fix chunk parameter processing bug
If an address family is not listed in "Supported Address Types"
parameter(INIT Chunk), but the packet is sent by that family, this
address family should be considered as supported by peer.  Otherwise,
an error condition will occur. For instance, if kernel receives an
IPV6 SCTP INIT chunk with "Support Address Types" parameter which
indicates just supporting IPV4 Address family. Kernel will reply an
IPV6 SCTP INIT ACK packet, but the source ipv6 address in ipv6 header
will be vacant. This is not correct.

refer to RFC4460 as following:
      IMPLEMENTATION NOTE: If an SCTP endpoint lists in the 'Supported
      Address Types' parameter either IPv4 or IPv6, but uses the other
      family for sending the packet containing the INIT chunk, or if it
      also lists addresses of the other family in the INIT chunk, then
      the address family that is not listed in the 'Supported Address
      Types' parameter SHOULD also be considered as supported by the
      receiver of the INIT chunk.  The receiver of the INIT chunk SHOULD
      NOT respond with any kind of error indication.

Here is a fix to comply to RFC.

Signed-off-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com>
Acked-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-05 13:43:32 -08:00
David S. Miller
255333c1db Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:

	net/mac80211/rc80211_pid_algo.c
2008-03-05 12:26:41 -08:00
Daniel Lezcano
4591db4f37 [NETNS][IPV6] route6 - add netns parameter to ip6_route_output
Add an netns parameter to ip6_route_output. That will allow to access
to the right routing table for outgoing traffic.

Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: Benjamin Thery <benjamin.thery@bull.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-05 10:48:10 -08:00
YOSHIFUJI Hideaki
5e5f3f0f80 [IPV6] ADDRCONF: Convert ipv6_get_saddr() to ipv6_dev_get_saddr().
Since most users of ipv6_get_saddr() pass non-NULL as
dst argument, use ipv6_dev_get_saddr() directly.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-04 15:18:23 +09:00
Denis V. Lunev
f0fd56ed40 [SCTP]: seq_printf format warning. (fixed)
sctp_association->hbinterval is unsigned long. Replace %8d with %8lu.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-03 11:55:54 -08:00
Neil Horman
58fbbed4fb [SCTP]: extend exported data in /proc/net/sctp/assoc
RFC 3873 specifies several MIB objects that can't be obtained by the
current data set exported by /proc/sys/net/sctp/assoc.  This patch
adds the missing pieces of data that allow us to compute all the
objects in the sctpAssocTable object.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-02-29 11:40:56 -08:00
Pavel Emelyanov
459eea7410 [SCTP]: Use proc_create to setup de->proc_fops.
In addition to commit 160f17 ("[SCTP]: Use proc_create() to setup
->proc_fops first") use proc_create in two more places.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-02-29 11:24:45 -08:00
Denis V. Lunev
6133fb1aa1 [NETNS]: Disable inetaddr notifiers in namespaces other than initial.
ip_fib_init is kept enabled. It is already namespace-aware.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-02-28 20:46:17 -08:00
Wang Chen
160f17e345 [SCTP]: Use proc_create() to setup ->proc_fops first
Use proc_create() to make sure that ->proc_fops be setup before gluing
PDE to main tree.

Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-02-28 14:13:16 -08:00
Vlad Yasevich
7e8616d8e7 [SCTP]: Update AUTH structures to match declarations in draft-16.
The new SCTP socket api (draft 16) updates the AUTH API structures.
We never exported these since we knew they would change.
Update the rest to match the draft.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2008-02-28 16:45:04 -05:00
Vlad Yasevich
b40db68468 [SCTP]: Incorrect length was used in SCTP_*_AUTH_CHUNKS socket option
The chunks are stored inside a parameter structure in the kernel
and when we copy them to the user, we need to account for
the parameter header.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2008-02-28 16:45:01 -05:00
Neil Horman
15efbe7639 [SCTP]: Clean up naming conventions of sctp protocol/address family registration
I noticed while looking into some odd behavior in sctp, that the variable
name sctp_pf_inet6_specific was used twice to represent two different
pieces of data (its both a structure name and a pointer to that type of
structure), which is confusing to say the least, and potentially dangerous
depending on the variable scope.  This patch cleans that up, and makes the
protocol and address family registration names in SCTP more regular,
increasing readability.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>

 ipv6.c     |   12 ++++++------
 protocol.c |   12 ++++++------
 2 files changed, 12 insertions(+), 12 deletions(-)
2008-02-28 16:41:05 -05:00
Vlad Yasevich
b90a137d30 [SCTP]: Correctly set the length of sctp_assoc_change notification
sctp_assoc_change notification may contain the data from a received
ABORT chunk.  Set the length correctly to account for that.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2008-02-27 16:40:55 -05:00
Pavel Emelyanov
5f31886ff0 [SCTP]: Pick up an orphaned sctp_sockets_allocated counter.
This counter is currently write-only.

Drawing an analogy with the similar tcp counter, I think
that this one should be pointed by the sockets_allocated
members of sctp_prot and sctpv6_prot.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-02-20 00:23:01 -08:00
Pavel Emelyanov
8ff65b4603 [SCTP]: Convert sctp_dbg_objcnt to seq files.
This makes the code use a good proc API and the text ~50 bytes shorter.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-02-09 23:24:58 -08:00
Pavel Emelyanov
3f5340a67e [SCTP]: Use snmp_fold_field instead of a homebrew analogue.
SCPT already depends in INET, so this doesn't create additional
dependencies.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-02-09 23:23:44 -08:00
Vlad Yasevich
5f9646c3d9 [SCTP]: Make sure the chunk is off the transmitted list prior to freeing.
In a few instances, we need to remove the chunk from the transmitted list
prior to freeing it.  This is because the free code doesn't do that any
more and so we need to do it manually.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2008-02-06 21:27:39 -05:00
Wei Yongjun
a869981423 [SCTP]: Fix kernel panic while received ASCONF chunk with bad serial number
While recevied ASCONF chunk with serial number less then needed, kernel
will treat this chunk as a retransmitted ASCONF chunk and find cached
ASCONF-ACK chunk used sctp_assoc_lookup_asconf_ack(). But this function
will always return NO-NULL. So response with cached ASCONF-ACKs chunk
will cause kernel panic.
In function sctp_assoc_lookup_asconf_ack(), if the cached ASCONF-ACKs
list asconf_ack_list is empty, or if the serial being requested does not
exists, the function as it currectly stands returns the actuall
list_head asoc->asconf_ack_list, this is not a cache ASCONF-ACK chunk
but a bogus pointer.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2008-02-06 21:27:39 -05:00
Vlad Yasevich
b46ae36de4 [SCTP]: Set ports in every address returned by sctp_getladdrs()
Thomas Dreibholz has reported that port numbers are not filled
in the results of sctp_getladdrs() when the socket was bound
to an ephemeral port.  This is only true, if the address was
not specified either.  So, fill in the port number correctly.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2008-02-06 21:27:39 -05:00
Vlad Yasevich
c068be5491 [SCTP]: Correctly reap SSNs when processing FORWARD_TSN chunk
When we recieve a FORWARD_TSN chunk, we need to reap
all the queued fast-forwarded chunks from the ordering queue
 However, if we don't have them queued, we need to see if
the next expected one is there as well.  If it is, start
deliver from that point instead of waiting for the next
chunk to arrive.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2008-02-06 21:26:26 -05:00
Vlad Yasevich
01f2d38498 [SCTP]: Kill silly inlines in ulpqueue.c
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2008-02-05 10:59:30 -05:00
Vlad Yasevich
0eca8fee0c [SCTP]: Do not increase rwnd when reading partial notification.
When a user reads a partial notification message, do not
update rwnd since notifications must not be counted towards
receive window.

Tested-by: Oliver Roll <mail@oliroll.de>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2008-02-05 10:59:30 -05:00
Vlad Yasevich
60c778b259 [SCTP]: Stop claiming that this is a "reference implementation"
I was notified by Randy Stewart that lksctp claims to be
"the reference implementation".  First of all, "the
refrence implementation" was the original implementation
of SCTP in usersapce written ty Randy and a few others.
Second, after looking at the definiton of 'reference implementation',
we don't really meet the requirements.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2008-02-05 10:59:07 -05:00
Wei Yongjun
7cc08b55fc [SCTP]: Fix kernel panic while received AUTH chunk with BAD shared key identifier
If SCTP-AUTH is enabled, received AUTH chunk with BAD shared key 
identifier will cause kernel panic.

Test as following:
step1: enabled /proc/sys/net/sctp/auth_enable
step 2:  connect  to SCTP server with auth capable. Association is 
established between endpoints. Then send a AUTH chunk with a bad 
shareid, SCTP server will kernel panic after received that AUTH chunk.

SCTP client                   SCTP server
  INIT         ---------->  
    (with auth capable)
               <----------    INIT-ACK
                              (with auth capable)
  COOKIE-ECHO  ---------->
               <----------    COOKIE-ACK
  AUTH         ---------->


AUTH chunk is like this:
  AUTH chunk
    Chunk type: AUTH (15)
    Chunk flags: 0x00
    Chunk length: 28
    Shared key identifier: 10
    HMAC identifier: SHA-1 (1)
    HMAC: 0000000000000000000000000000000000000000

The assignment of NULL to key can safely be removed, since key_for_each 
(which is just list_for_each_entry under the covers does an initial 
assignment to key anyway).

If the endpoint_shared_keys list is empty, or if the key_id being 
requested does not exist, the function as it currently stands returns 
the actuall list_head (in this case endpoint_shared_keys.  Since that 
list_head isn't surrounded by an actuall data structure, the last 
iteration through list_for_each_entry will do a container_of on key, and 
we wind up returning a bogus pointer, instead of NULL, as we should.

> Neil Horman wrote:
>> On Tue, Jan 22, 2008 at 05:29:20PM +0900, Wei Yongjun wrote:
>>
>> FWIW, Ack from me.  The assignment of NULL to key can safely be 
>> removed, since
>> key_for_each (which is just list_for_each_entry under the covers does 
>> an initial
>> assignment to key anyway).
>> If the endpoint_shared_keys list is empty, or if the key_id being 
>> requested does
>> not exist, the function as it currently stands returns the actuall 
>> list_head (in
>> this case endpoint_shared_keys.  Since that list_head isn't 
>> surrounded by an
>> actuall data structure, the last iteration through 
>> list_for_each_entry will do a
>> container_of on key, and we wind up returning a bogus pointer, 
>> instead of NULL,
>> as we should.  Wei's patch corrects that.
>>
>> Regards
>> Neil
>>
>> Acked-by: Neil Horman <nhorman@tuxdriver.com>
>>
>
> Yep, the patch is correct.
>
> Acked-by: Vlad Yasevich <vladislav.yasevich@hp.com>
>
> -vlad
>

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-02-05 03:03:06 -08:00
Wei Yongjun
d2f19fa13e [SCTP]: Fix kernel panic while received AUTH chunk while enabled auth
If STCP is started while /proc/sys/net/sctp/auth_enable is set 0 and
association is established between endpoints. Then if
/proc/sys/net/sctp/auth_enable is set 1, a received AUTH chunk will
cause kernel panic.

Test as following:
step 1: echo 0> /proc/sys/net/sctp/auth_enable
step 2:

   SCTP client                  SCTP server
      INIT          --------->
                    <---------   INIT-ACK
      COOKIE-ECHO   --------->
                    <---------   COOKIE-ACK
step 3:
    echo 1> /proc/sys/net/sctp/auth_enable
step 4:
   SCTP client                  SCTP server
       AUTH        ----------->  Kernel Panic


This patch fix this probleam to treat AUTH chunk as unknow chunk if peer 
has initialized with no auth capable.

> Sorry for the delay.  Was on vacation without net access.
>
> Wei Yongjun wrote:
>>
>>
>> This patch fix this probleam to treat AUTH chunk as unknow chunk if 
>> peer has initialized with no auth capable.
>>
>> Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
>
> Acked-by: Vlad Yasevich <vladislav.yasevich@hp.com>
>
>>

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Acked-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-02-05 03:02:26 -08:00
Oliver Pinter
ac461a0330 typo fixes in net/sctp/sm_statefuns.c
Signed-off-by: Oliver Pinter <oliver.pntr@gmail.com>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
2008-02-03 17:52:41 +02:00
Wei Yongjun
ec9dbb1c3e [SCTP]: Fix miss of report unrecognized HMAC Algorithm parameter
This patch fix miss of check for report unrecognized HMAC Algorithm
parameter.  When AUTH is disabled, goto fall through path to report
unrecognized parameter, else, just break

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-31 19:27:09 -08:00
Denis V. Lunev
f206351a50 [NETNS]: Add namespace parameter to ip_route_output_key.
Needed to propagate it down to the ip_route_output_flow.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28 15:11:07 -08:00
Vlad Yasevich
853f4b5055 [SCTP]: Correctly initialize error when parameter validation failed.
When parameter validation fails, there should be error causes that
specify what type of failure we've encountered.  If the causes are not
there, we lacked memory to allocated them.  Thus make that the default
value for the error.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28 15:08:11 -08:00
David S. Miller
66688ea7c8 [SCTP]: Fix build warning in sctp_sf_do_5_1C_ack().
Reported by Andrew Morton.

net/sctp/sm_statefuns.c: In function 'sctp_sf_do_5_1C_ack':
net/sctp/sm_statefuns.c:484: warning: 'error' may be used uninitialized in this function

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28 15:02:48 -08:00
Daniel Lezcano
bfeade0870 [NETNS][IPV6]: inet6_addr - check ipv6 address per namespace
When a new address is added, we must check if the new address does not
already exists.  This patch makes this check to be aware of a network
namespace, so the check will look if the address already exists for
the specified network namespace. While the addresses are browsed, the
addresses which do not belong to the namespace are discarded.

Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: Benjamin Thery <benjamin.thery@bull.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28 15:01:44 -08:00
Eric W. Biederman
6b175b26c1 [NETNS]: Add netns parameter to inet_(dev_)add_type.
The patch extends the inet_addr_type and inet_dev_addr_type with the
network namespace pointer. That allows to access the different tables
relatively to the network namespace.

The modification of the signature function is reported in all the
callers of the inet_addr_type using the pointer to the well known
init_net.

Acked-by: Benjamin Thery <benjamin.thery@bull.net>
Acked-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28 15:01:27 -08:00
Pavel Emelyanov
b5ccd792fa [NET]: Simple ctl_table to ctl_path conversions.
This patch includes many places, that only required
replacing the ctl_table-s with appropriate ctl_paths
and call register_sysctl_paths().

Nothing special was done with them.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28 15:01:07 -08:00
Hideo Aoki
3ab224be6d [NET] CORE: Introducing new memory accounting interface.
This patch introduces new memory accounting functions for each network
protocol. Most of them are renamed from memory accounting functions
for stream protocols. At the same time, some stream memory accounting
functions are removed since other functions do same thing.

Renaming:
	sk_stream_free_skb()		->	sk_wmem_free_skb()
	__sk_stream_mem_reclaim()	->	__sk_mem_reclaim()
	sk_stream_mem_reclaim()		->	sk_mem_reclaim()
	sk_stream_mem_schedule 		->    	__sk_mem_schedule()
	sk_stream_pages()      		->	sk_mem_pages()
	sk_stream_rmem_schedule()	->	sk_rmem_schedule()
	sk_stream_wmem_schedule()	->	sk_wmem_schedule()
	sk_charge_skb()			->	sk_mem_charge()

Removeing
	sk_stream_rfree():	consolidates into sock_rfree()
	sk_stream_set_owner_r(): consolidates into skb_set_owner_r()
	sk_stream_mem_schedule()

The following functions are added.
    	sk_has_account(): check if the protocol supports accounting
	sk_mem_uncharge(): do the opposite of sk_mem_charge()

In addition, to achieve consolidation, updating sk_wmem_queued is
removed from sk_mem_charge().

Next, to consolidate memory accounting functions, this patch adds
memory accounting calls to network core functions. Moreover, present
memory accounting call is renamed to new accounting call.

Finally we replace present memory accounting calls with new interface
in TCP and SCTP.

Signed-off-by: Takahiro Yasui <tyasui@redhat.com>
Signed-off-by: Hideo Aoki <haoki@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28 15:00:18 -08:00
Vlad Yasevich
d670119132 [SCTP]: Follow Add-IP security consideratiosn wrt INIT/INIT-ACK
The Security Considerations section of RFC 5061 has the following
text:

   If an SCTP endpoint that supports this extension receives an INIT
   that indicates that the peer supports the ASCONF extension but does
   NOT support the [RFC4895] extension, the receiver of such an INIT
   MUST send an ABORT in response.  Note that an implementation is
   allowed to silently discard such an INIT as an option as well, but
   under NO circumstance is an implementation allowed to proceed with
   the association setup by sending an INIT-ACK in response.

   An implementation that receives an INIT-ACK that indicates that the
   peer does not support the [RFC4895] extension MUST NOT send the
   COOKIE-ECHO to establish the association.  Instead, the
   implementation MUST discard the INIT-ACK and report to the upper-
   layer user that an association cannot be established destroying the
   Transmission Control Block (TCB).

Follow the recomendations.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28 14:59:25 -08:00
Vlad Yasevich
75205f4783 [SCTP]: Implement ADD-IP special case processing for ABORT chunk
ADD-IP spec has a special case for processing ABORTs:
    F4) ... One special consideration is that ABORT
        Chunks arriving destined to the IP address being deleted MUST be
        ignored (see Section 5.3.1 for further details).

Check if the address we received on is in the DEL state, and if
so, ignore the ABORT.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28 14:59:24 -08:00
Vlad Yasevich
f57d96b2e9 [SCTP]: Change use_as_src into a full address state
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28 14:59:24 -08:00
Vlad Yasevich
a08de64d07 [SCTP]: Update ASCONF processing to conform to spec.
The processing of the ASCONF chunks has changed a lot in the
spec.  New items are:
    1. A list of ASCONF-ACK chunks is now cached
    2. The source of the packet is used in response.
    3. New handling for unexpect ASCONF chunks.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28 14:59:23 -08:00
Vlad Yasevich
ba8a06daed [SCTP]: ADD-IP updates the states where ASCONFs can be sent
C4)  Both ASCONF and ASCONF-ACK Chunks MUST NOT be sent in any SCTP
        state except ESTABLISHED, SHUTDOWN-PENDING, SHUTDOWN-RECEIVED,
        and SHUTDOWN-SENT.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28 14:59:22 -08:00
Vlad Yasevich
df21857714 [SCTP]: Update association lookup to look at ASCONF chunks as well
ADD-IP draft section 5.2 specifies that if an association can not
be found using the source and destination of the IP packet,
then, if the packet contains ASCONF chunks, the Address Parameter
TLV should be used to lookup an association.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28 14:59:22 -08:00
Vlad Yasevich
d6de309759 [SCTP]: Add the handling of "Set Primary IP Address" parameter to INIT
The ADD-IP "Set Primary IP Address" parameter is allowed in the
INIT/INIT-ACK exchange.  Allow processing of this parameter during
the INIT/INIT-ACK.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28 14:59:21 -08:00
Vlad Yasevich
42e30bf346 [SCTP]: Handle the wildcard ADD-IP Address parameter
The Address Parameter in the parameter list of the ASCONF chunk
may be a wildcard address.  In this case special processing
is required.  For the 'add' case, the source IP of the packet is
added.  In the 'del' case, all addresses except the source IP
of packet are removed. In the "mark primary" case, the source
address is marked as primary.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28 14:59:20 -08:00
Vlad Yasevich
6afd2e83cd [SCTP]: Discard unauthenticated ASCONF and ASCONF ACK chunks
Now that we support AUTH, discard unauthenticated ASCONF and ASCONF ACK
chunks as mandated in the ADD-IP spec.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28 14:59:19 -08:00
Vlad Yasevich
9ad0977fe1 [SCTP]: Use crc32c library for checksum calculations.
The crc32c library used an identical table and algorithm
as SCTP.  Switch to using the library instead of carrying
our own table.  Using crypto layer proved to have too
much overhead compared to using the library directly.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28 14:58:20 -08:00
Joe Perches
b5cb2bbc4c [IPV4] sctp: Use ipv4_is_<type>
Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28 14:58:17 -08:00
Pavel Emelyanov
8d8ad9d7c4 [NET]: Name magic constants in sock_wake_async()
The sock_wake_async() performs a bit different actions
depending on "how" argument. Unfortunately this argument
ony has numerical magic values.

I propose to give names to their constants to help people
reading this function callers understand what's going on
without looking into this function all the time.

I suppose this is 2.6.25 material, but if it's not (or the
naming seems poor/bad/awful), I can rework it against the
current net-2.6 tree.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28 14:55:03 -08:00
Pavel Emelyanov
b24b8a247f [NET]: Convert init_timer into setup_timer
Many-many code in the kernel initialized the timer->function
and  timer->data together with calling init_timer(timer). There
is already a helper for this. Use it for networking code.

The patch is HUGE, but makes the code 130 lines shorter
(98 insertions(+), 228 deletions(-)).

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28 14:53:35 -08:00
Vlad Yasevich
036b579b11 [SCTP]: Add back the code that accounted for FORWARD_TSN parameter in INIT.
Some recent changes completely removed accounting for the FORWARD_TSN
parameter length in the INIT and INIT-ACK chunk.  This is wrong and
should be restored.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-08 23:30:04 -08:00
Vlad Yasevich
6df9cfc1ad [SCTP]: Correctly handle AUTH parameters in unexpected INIT
When processing an unexpected INIT chunk, we do not need to
do any preservation of the old AUTH parameters.  In fact,
doing such preservations will nullify AUTH and allow connection
stealing.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-08 23:30:03 -08:00
Vlad Yasevich
f691724c4d [SCTP]: Fix the name of the authentication event.
The even should be called SCTP_AUTHENTICATION_INDICATION.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-08 23:30:02 -08:00
Joe Perches
7aa1b54b74 [SCTP]: Spelling fixes
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-12-20 14:03:52 -08:00
Vlad Yasevich
ef5d4cf2f9 [SCTP]: Flush fragment queue when exiting partial delivery.
At the end of partial delivery, we may have complete messages
sitting on the fragment queue.  These messages are stuck there
until a new fragment arrives.  This can comletely stall a
given association.  When clearing partial delivery state, flush
any complete messages from the fragment queue and send them on
their way up.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-12-16 14:05:45 -08:00
Vlad Yasevich
8e71a11c9f [SCTP]: Fix the bind_addr info during migration.
During accept/migrate the code attempts to copy the addresses from
the parent endpoint to the new endpoint.   However, if the parent
was bound to a wildcard address, then we end up pointlessly copying
all of the current addresses on the system.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-12-07 01:07:49 -08:00
Vlad Yasevich
f26f7c4805 [SCTP]: Add bind hash locking to the migrate code
SCTP accept code tries to add a newliy created socket
to a bind bucket without holding a lock.   On a really
busy system, that can causes slab corruptions.
Add a lock around this code.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-12-07 01:07:45 -08:00
Vlad Yasevich
b7e0fe9f81 SCTP: Fix build issues with SCTP AUTH.
SCTP-AUTH requires selection of CRYPTO, HMAC and SHA1 since
SHA1 is a MUST requirement for AUTH.  We also support SHA256,
but that's optional, so fix the code to treat it as such.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-11-29 10:17:42 -05:00
Vlad Yasevich
555d3d5d2b SCTP: Fix chunk acceptance when no authenticated chunks were listed.
In the case where no autheticated chunks were specified, we were still
trying to verify that a given chunk needs authentication and doing so
incorrectly.  Add a check for parameter length to make sure we don't
try to use an empty auth_chunks parameter to verify against.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-11-29 10:17:42 -05:00
Vlad Yasevich
8ee4be37e8 SCTP: Fix the supported extensions paramter
Supported extensions parameter was not coded right and ended up
over-writing memory or causing skb overflows.  First, remove
the FWD_TSN support from as it shouldn't be there and also fix
the paramter encoding.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-11-29 10:17:41 -05:00
Vlad Yasevich
9baffaa689 SCTP: Fix SCTP-AUTH to correctly add HMACS paramter.
There was a typo that cleared the HMACS parameters when no
authenticated chunks were specified.  We whould be clearing
the chunks pointer instead of the hmacs.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-11-29 10:17:41 -05:00
Vlad Yasevich
fd10279bc7 SCTP: Fix the number of HB transmissions.
Our treatment of Heartbeats is special in that the inital HB chunk
counts against the error count for the association, where as for
other chunks, only retransmissions or timeouts count against us.
As a result, we had an off-by-1 situation with a number of
Heartbeats we could send.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-11-29 10:17:41 -05:00
Joe Perches
9ee46f1d31 [SCTP]: Add missing "space"
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-11-19 23:47:47 -08:00
Jesper Juhl
9abed245a6 Fix memory leak in discard case of sctp_sf_abort_violation()
In net/sctp/sm_statefuns.c::sctp_sf_abort_violation() we may leak
the storage allocated for 'abort' by returning from the function
without using or freeing it. This happens in case
"sctp_auth_recv_cid(SCTP_CID_ABORT, asoc)" is true and we jump to
the 'discard' label.
Spotted by the Coverity checker.

The simple fix is to simply move the creation of the "abort chunk"
to after the possible jump to the 'discard' label. This way we don't
even have to allocate the memory at all in the problem case.

Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-11-12 10:13:24 -05:00
Vlad Yasevich
7d54dc6876 SCTP: Always flush the queue when uncorcking.
When the code calls uncork, trigger a queue flush, even
if the queue was not corked.  Most callers that explicitely
cork the queue will have additinal checks to see if they 
corked it.  Callers who do not cork the queue expect packets
to flow when they call uncork.

The scneario that showcased this bug happend when we were not
able to bundle DATA with outgoing COOKIE-ECHO.  As a result
the data just sat in the outqueue and did not get transmitted.
The application expected a response, but nothing happened.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-11-09 11:43:41 -05:00
Vlad Yasevich
cd3ae8e615 SCTP: Fix PR-SCTP to deliver all the accumulated ordered chunks
There is a small bug when we process a FWD-TSN.  We'll deliver
anything upto the current next expected SSN.  However, if the
next expected is already in the queue, it will take another
chunk to trigger its delivery.  The fix is to simply check
the current queued SSN is the next expected one.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-11-09 11:43:41 -05:00
Vlad Yasevich
7ab9080467 SCTP: Make sctp_verify_param return multiple indications.
SCTP-AUTH and future ADD-IP updates have a requirement to
do additional verification of parameters and an ability to
ABORT the association if verification fails.  So, introduce
additional return code so that we can clear signal a required
action.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-11-09 11:43:41 -05:00
Vlad Yasevich
d970dbf845 SCTP: Convert custom hash lists to use hlist.
Convert the custom hash list traversals to use hlist functions.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-11-09 11:43:40 -05:00
Vlad Yasevich
123ed979ea SCTP: Use hashed lookup when looking for an association.
A SCTP endpoint may have a lot of associations on them and walking
the list is fairly inefficient.  Instead, use a hashed lookup,
and filter out the hash list based on the endopoing we already have.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-11-09 11:41:36 -05:00
Vlad Yasevich
027f6e1ad3 SCTP: Fix a potential race between timers and receive path.
There is a possible race condition where the timer code will
free the association and the next packet in the queue will also
attempt to free the same association.

The example is, when we receive an ABORT at about the same time
as the retransmission timer fires.  If the timer wins the race,
it will free the association.  Once it releases the lock, the
queue processing will recieve the ABORT and will try to free
the association again.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-11-07 11:39:27 -05:00
Vlad Yasevich
73d9c4fd1a SCTP: Allow ADD_IP to work with AUTH for backward compatibility.
This patch adds a tunable that will allow ADD_IP to work without
AUTH for backward compatibility.  The default value is off since
the default value for ADD_IP is off as well.  People who need
to use ADD-IP with older implementations take risks of connection
hijacking and should consider upgrading or turning this tunable on.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-11-07 11:39:27 -05:00
Vlad Yasevich
88799fe5ec SCTP: Correctly disable ADD-IP when AUTH is not supported.
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-11-07 11:39:27 -05:00
Vlad Yasevich
0ed90fb0f6 SCTP: Update RCU handling during the ADD-IP case
After learning more about rcu, it looks like the ADD-IP hadling
doesn't need to call call_rcu_bh.  All the rcu critical sections
use rcu_read_lock, so using call_rcu_bh is wrong here.
Now, restore the local_bh_disable() code blocks and use normal
call_rcu() calls.  Also restore the missing return statement.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-11-07 11:39:27 -05:00
Vlad Yasevich
b6157d8e03 SCTP: Fix difference cases of retransmit.
Commit d0ce92910b broke several retransmit
cases including fast retransmit.  The reason is that we should
only delay by rto while doing retranmists as a result of a timeout.
Retransmit as a result of path mtu discover, fast retransmit, or
other evernts that should trigger immidiate retransmissions got broken.

Also, since rto is doubled prior to marking of packets elegable for
retransmission, we never marked correct chunks anyway.

The fix is provide a reason for a given retransmission so that we
can mark chunks appropriately and to save the old rto value to do
comparisons against.

All regressions tests passed with this code.

Spotted by Wei Yongjun <yjwei@cn.fujitsu.com>

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-11-07 11:39:27 -05:00
Wei Yongjun
f3830ccc2e SCTP : Fix to process bundled ASCONF chunk correctly
If ASCONF chunk is bundled with other chunks as the first chunk, when
process the ASCONF parameters, full packet data will be process as the
parameters of the ASCONF chunk, not only the real parameters. So if you
send a ASCONF chunk bundled with other chunks, you will get an unexpect
result.
This problem also exists when ASCONF-ACK chunk is bundled with other chunks.

This patch fix this problem.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-11-07 11:39:27 -05:00
Wei Yongjun
64b0812b6d SCTP : Fix bad formatted comment in outqueue.c
Just fix the bad format of the comment in outqueue.c.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-11-07 11:39:26 -05:00
Eric Dumazet
8295b6d9e6 [SCTP]: Use the {DEFINE|REF}_PROTO_INUSE infrastructure
Trivial patch to make "sctcp,sctpv6" protocols uses the fast "inuse
sockets" infrastructure

Each protocol use then a static percpu var, instead of a dynamic one.
This saves some ram and some cpu cycles

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-11-07 04:09:00 -08:00
Pavel Emelyanov
6257ff2177 [NET]: Forget the zero_it argument of sk_alloc()
Finally, the zero_it argument can be completely removed from
the callers and from the function prototype.

Besides, fix the checkpatch.pl warnings about using the
assignments inside if-s.

This patch is rather big, and it is a part of the previous one.
I splitted it wishing to make the patches more readable. Hope 
this particular split helped.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-11-01 00:39:31 -07:00
Al Viro
d06f608265 SCTP endianness annotations regression
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-29 07:41:32 -07:00
Herbert Xu
68e3f5dd4d [CRYPTO] users: Fix up scatterlist conversion errors
This patch fixes the errors made in the users of the crypto layer during
the sg_init_table conversion.  It also adds a few conversions that were
missing altogether.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-27 00:52:07 -07:00
Adrian Bunk
8ad7c62b75 [SCTP] net/sctp/auth.c: make 3 functions static
This patch makes three needlessly global functions static.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Acked-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-26 04:21:23 -07:00
Adrian Bunk
d84d64dcb3 [SCTP]: #if 0 sctp_update_copy_cksum()
sctp_update_copy_cksum() is no longer used.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Acked-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-26 04:07:20 -07:00
Linus Torvalds
06dbbfef82 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
  [IPV4]: Explicitly call fib_get_table() in fib_frontend.c
  [NET]: Use BUILD_BUG_ON in net/core/flowi.c
  [NET]: Remove in-code externs for some functions from net/core/dev.c
  [NET]: Don't declare extern variables in net/core/sysctl_net_core.c
  [TCP]: Remove unneeded implicit type cast when calling tcp_minshall_update()
  [NET]: Treat the sign of the result of skb_headroom() consistently
  [9P]: Fix missing unlock before return in p9_mux_poll_start
  [PKT_SCHED]: Fix sch_prio.c build with CONFIG_NETDEVICES_MULTIQUEUE
  [IPV4] ip_gre: sendto/recvfrom NBMA address
  [SCTP]: Consolidate sctp_ulpq_renege_xxx functions
  [NETLINK]: Fix ACK processing after netlink_dump_start
  [VLAN]: MAINTAINERS update
  [DCCP]: Implement SIOCINQ/FIONREAD
  [NET]: Validate device addr prior to interface-up
2007-10-25 15:50:32 -07:00
Jens Axboe
642f149031 SG: Change sg_set_page() to take length and offset argument
Most drivers need to set length and offset as well, so may as well fold
those three lines into one.

Add sg_assign_page() for those two locations that only needed to set
the page, where the offset/length is set outside of the function context.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-10-24 11:20:47 +02:00
Pavel Emelyanov
16d14ef9f2 [SCTP]: Consolidate sctp_ulpq_renege_xxx functions
Both are equal, except for the list to be traversed.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-23 21:27:52 -07:00
Christian Borntraeger
ebc3bbcfcf Fix sctp compile
sctp fails to compile with
net/sctp/sm_make_chunk.c: In function 'sctp_pack_cookie':
net/sctp/sm_make_chunk.c:1516: error: implicit declaration of function 'sg_init_table'
net/sctp/sm_make_chunk.c:1517: error: implicit declaration of function 'sg_set_page'

use the proper include file.

SCTP maintainers Vlad Yasevich and Sridhar Samudrala  are CCed.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-10-23 12:46:32 +02:00
Jens Axboe
fa05f1286b Update net/ to use sg helpers
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-10-22 21:19:56 +02:00
Rusty Russell
af49d9248f Remove "unsafe" from module struct
Adrian Bunk points out that "unsafe" was used to mark modules touched by
the deprecated MOD_INC_USE_COUNT interface, which has long gone.  It's time
to remove the member from the module structure, as well.

If you want a module which can't unload, don't register an exit function.

(Vlad Yasevich says SCTP is now safe to unload, so just remove the
__unsafe there).

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Shannon Nelson <shannon.nelson@intel.com>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Cc: Sridhar Samudrala <sri@us.ibm.com>
Cc: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17 08:42:49 -07:00
Herbert Xu
e5bbef20e0 [IPV6]: Replace sk_buff ** with sk_buff * in input handlers
With all the users of the double pointers removed from the IPv6 input path,
this patch converts all occurances of sk_buff ** to sk_buff * in IPv6 input
handlers.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-15 12:50:28 -07:00
Al Viro
411223c01a fix breakage in sctp getsockopt
copy_to_user() into on-stack array

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-14 12:41:51 -07:00
Stephen Hemminger
227b60f510 [INET]: local port range robustness
Expansion of original idea from Denis V. Lunev <den@openvz.org>

Add robustness and locking to the local_port_range sysctl.
1. Enforce that low < high when setting.
2. Use seqlock to ensure atomic update.

The locking might seem like overkill, but there are
cases where sysadmin might want to change value in the
middle of a DoS attack.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 17:30:46 -07:00
Stephen Hemminger
0639300900 [SCTP]: port randomization
Add port randomization rather than a simple fixed rover
for use with SCTP.  This makes it act similar to TCP, UDP, DCCP
when allocating ports.

No longer need port_alloc_lock as well (suggestion by Brian Haley).

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 17:30:18 -07:00
Vlad Yasevich
6b2f9cb64d [SCTP]: Tie ADD-IP and AUTH functionality as required by spec.
ADD-IP spec requires AUTH. It is, in fact, dangerous without AUTH.
So, disable ADD-IP functionality if the peer claims to support
ADD-IP, but not AUTH.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 16:51:33 -07:00
Vlad Yasevich
65b07e5d0d [SCTP]: API updates to suport SCTP-AUTH extensions.
Add SCTP-AUTH API.  The API implemented here was
agreed to between implementors at the 9th SCTP Interop.
It will be documented in the next revision of the
SCTP socket API spec.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 16:51:32 -07:00
Vlad Yasevich
bbd0d59809 [SCTP]: Implement the receive and verification of AUTH chunk
This patch implements the receive path needed to process authenticated
chunks.  Add ability to process the AUTH chunk and handle edge cases
for authenticated COOKIE-ECHO as well.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 16:51:31 -07:00
Vlad Yasevich
4cd57c8078 [SCTP]: Enable the sending of the AUTH chunk.
SCTP-AUTH, Section 6.2:

   Endpoints MUST send all requested chunks authenticated where this has
   been requested by the peer.  The other chunks MAY be sent
   authenticated or not.  If endpoint pair shared keys are used, one of
   them MUST be selected for authentication.

   To send chunks in an authenticated way, the sender MUST include these
   chunks after an AUTH chunk.  This means that a sender MUST bundle
   chunks in order to authenticate them.

   If the endpoint has no endpoint pair shared key for the peer, it MUST
   use Shared Key Identifier 0 with an empty endpoint pair shared key.
   If there are multiple endpoint shared keys the sender selects one and
   uses the corresponding Shared Key Identifier

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 16:51:31 -07:00
Vlad Yasevich
730fc3d05c [SCTP]: Implete SCTP-AUTH parameter processing
Implement processing for the CHUNKS, RANDOM, and HMAC parameters and
deal with how this parameters are effected by association restarts.
In particular, during unexpeted INIT processing, we need to reply with
parameters from the original INIT chunk.  Also, after restart, we need
to update the old association with new peer parameters and change the
association shared keys.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 16:51:30 -07:00
Vlad Yasevich
a29a5bd4f5 [SCTP]: Implement SCTP-AUTH initializations.
The patch initializes AUTH related members of the generic SCTP
structures and provides a way to enable/disable auth extension.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 16:51:30 -07:00
Vlad Yasevich
1f485649f5 [SCTP]: Implement SCTP-AUTH internals
This patch implements the internals operations of the AUTH, such as
key computation and storage.  It also adds necessary variables to
the SCTP data structures.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 16:51:29 -07:00
Vlad Yasevich
007e3936bd [SCTP]: Move sysctl_sctp_[rw]mem definitions to protocol.c
The sctp_[rw]mem definitions should really be in protocol.c
since that is where they are initialized.  This also allows
one to build a kernel without sysctl support.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 16:51:23 -07:00
Vlad Yasevich
131a47e31a [SCTP]: Implement the Supported Extensions Parameter
SCTP Supported Extenions parameter is specified in Section 4.2.7
of the ADD-IP draft (soon to be RFC).  The parameter is
encoded as:

      0                   1                   2                   3
      0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
     |     Parameter Type = 0x8008   |      Parameter Length         |
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
     | CHUNK TYPE 1  |  CHUNK TYPE 2 |  CHUNK TYPE 3 |  CHUNK TYPE 4 |
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
     |                             ....                              |
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
     | CHUNK TYPE N  |      PAD      |      PAD      |      PAD      |
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

It contains a list of chunks that a particular SCTP extension
uses.  Current extensions supported are Partial Reliability
(FWD-TSN) and ADD-IP (ASCONF and ASCONF-ACK).

When implementing new extensions (AUTH, PKT-DROP, etc..), new
chunks need to be added to this parameter.  Parameter processing
would be modified to negotiate support for these new features.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 16:51:23 -07:00
Adrian Bunk
b6fa1a4d74 [SCTP] net/sctp/socket.c: make 3 variables static
This patch makes the following needlessly global variables static:
- sctp_memory_pressure
- sctp_memory_allocated
- sctp_sockets_allocated

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 16:49:19 -07:00
Adrian Bunk
5c94bf86c8 [SCTP]: Make sctp_addto_param() static.
sctp_addto_param() can become static.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 16:49:19 -07:00
Eric W. Biederman
881d966b48 [NET]: Make the device list and device lookups per namespace.
This patch makes most of the generic device layer network
namespace safe.  This patch makes dev_base_head a
network namespace variable, and then it picks up
a few associated variables.  The functions:
dev_getbyhwaddr
dev_getfirsthwbytype
dev_get_by_flags
dev_get_by_name
__dev_get_by_name
dev_get_by_index
__dev_get_by_index
dev_ioctl
dev_ethtool
dev_load
wireless_process_ioctl

were modified to take a network namespace argument, and
deal with it.

vlan_ioctl_set and brioctl_set were modified so their
hooks will receive a network namespace argument.

So basically anthing in the core of the network stack that was
affected to by the change of dev_base was modified to handle
multiple network namespaces.  The rest of the network stack was
simply modified to explicitly use &init_net the initial network
namespace.  This can be fixed when those components of the network
stack are modified to handle multiple network namespaces.

For now the ifindex generator is left global.

Fundametally ifindex numbers are per namespace, or else
we will have corner case problems with migration when
we get that far.

At the same time there are assumptions in the network stack
that the ifindex of a network device won't change.  Making
the ifindex number global seems a good compromise until
the network stack can cope with ifindex changes when
you change namespaces, and the like.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 16:49:10 -07:00
Eric W. Biederman
1b8d7ae42d [NET]: Make socket creation namespace safe.
This patch passes in the namespace a new socket should be created in
and has the socket code do the appropriate reference counting.  By
virtue of this all socket create methods are touched.  In addition
the socket create methods are modified so that they will fail if
you attempt to create a socket in a non-default network namespace.

Failing if we attempt to create a socket outside of the default
network namespace ensures that as we incrementally make the network stack
network namespace aware we will not export functionality that someone
has not audited and made certain is network namespace safe.
Allowing us to partially enable network namespaces before all of the
exotic protocols are supported.

Any protocol layers I have missed will fail to compile because I now
pass an extra parameter into the socket creation code.

[ Integrated AF_IUCV build fixes from Andrew Morton... -DaveM ]

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 16:49:07 -07:00
Eric W. Biederman
457c4cbc5a [NET]: Make /proc/net per network namespace
This patch makes /proc/net per network namespace.  It modifies the global
variables proc_net and proc_net_stat to be per network namespace.
The proc_net file helpers are modified to take a network namespace argument,
and all of their callers are fixed to pass &init_net for that argument.
This ensures that all of the /proc/net files are only visible and
usable in the initial network namespace until the code behind them
has been updated to be handle multiple network namespaces.

Making /proc/net per namespace is necessary as at least some files
in /proc/net depend upon the set of network devices which is per
network namespace, and even more files in /proc/net have contents
that are relevant to a single network namespace.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 16:49:06 -07:00
Brian Haley
e773e4faa1 [IPV6]: Add v4mapped address inline
Add v4mapped address inline to avoid calls to ipv6_addr_type().

Signed-off-by: Brian Haley <brian.haley@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 16:48:32 -07:00
Neil Horman
4d93df0abd [SCTP]: Rewrite of sctp buffer management code
This patch introduces autotuning to the sctp buffer management code
similar to the TCP.  The buffer space can be grown if the advertised
receive window still has room.  This might happen if small message
sizes are used, which is common in telecom environmens.
New tunables are introduced that provide limits to buffer growth
and memory pressure is entered if to much buffer spaces is used.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 16:48:09 -07:00
Al Viro
78bd8fbbcd fix sctp_del_bind_addr() last argument type
It gets pointer to fastcall function, expects a pointer to normal
one and calls the sucker.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-09-26 09:22:04 -07:00
Wei Yongjun
6f4c618ddb SCTP : Add paramters validity check for ASCONF chunk
If ADDIP is enabled, when an ASCONF chunk is received with ASCONF
paramter length set to zero, this will cause infinite loop.
By the way, if an malformed ASCONF chunk is received, will cause
processing to access memory without verifying.

This is because of not check the validity of parameters in ASCONF chunk.
This patch fixed this.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-09-25 22:55:49 -07:00
Vlad Yasevich
3c77f961b5 SCTP: Discard OOTB packetes with bundled INIT early.
RFC 4460 and future RFC 4960 (2960-bis) specify that packets
with bundled INIT chunks need to be dropped.  We currenlty do
that only after processing any leading chunks.  For OOTB chunks,
since we already walk the entire packet, we should discard packets
with bundled INITs.

There are other chunks chunks that MUST NOT be bundled, but the spec
is silent on theire treatment.  Thus, we'll leave their teatment
alone for the moment.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Acked-by: Wei Yongjun <yjwei@cn.fujitsu.com>
2007-09-25 22:55:48 -07:00
Vlad Yasevich
ece25dfa09 SCTP: Clean up OOTB handling and fix infinite loop processing
While processing OOTB chunks as well as chunks with an invalid
length of 0, it was possible to SCTP to get wedged inside an
infinite loop because we didn't catch the condition correctly,
or didn't mark the packet for discard correctly.
This work is based on original findings and work by
Wei Yongjun <yjwei@cn.fujitsu.com>

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-09-25 22:55:47 -07:00
Vlad Yasevich
d3f259687f SCTP: Explicitely discard OOTB chunks
Explicitely discard OOTB chunks, whether the result is a
SHUTDOWN COMPLETE or an ABORT.  We need to discard the OOTB
SHUTDOWN ACK to prevent bombing attackes since responsed
MUST NOT be bundled.  We also explicietely discard in the
ABORT case since that function is widely used internally.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
2007-09-25 22:55:47 -07:00
Wei Yongjun
02c4e12c64 SCTP: Send ABORT chunk with correct tag in response to INIT ACK
When SCTP client received an INIT ACK chunk with missing mandatory
parameter such as "cookie parameter", it will send back a ABORT
with T-bit not set and verification tag is set to 0.
This is because before we accept this INIT ACK chunk, we do not know
the peer's tag.  This patch change to reflect vtag when responding to
INIT ACK with missing mandatory parameter.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-09-25 22:55:46 -07:00
Vlad Yasevich
a09c83847b SCTP: Validate buffer room when processing sequential chunks
When we process bundled chunks, we need to make sure that
the skb has the buffer for each header since we assume it's
always there.  Some malicious node can send us something like
DATA + 2 bytes and we'll try to walk off the end refrencing
potentially uninitialized memory.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-09-25 22:55:45 -07:00
Vlad Yasevich
559cf710b0 [SCTP]: Convert bind_addr_list locking to RCU
Since the sctp_sockaddr_entry is now RCU enabled as part of
the patch to synchronize sctp_localaddr_list, it makes sense to
change all handling of these entries to RCU.  This includes the
sctp_bind_addrs structure and it's list of bound addresses.

This list is currently protected by an external rw_lock and that
looks like an overkill.  There are only 2 writers to the list:
bind()/bindx() calls, and BH processing of ASCONF-ACK chunks.
These are already seriealized via the socket lock, so they will
not step on each other.  These are also relatively rare, so we
should be good with RCU.

The readers are varied and they are easily converted to RCU.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Sridhar Samdurala <sri@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-09-16 16:03:28 -07:00
Vlad Yasevich
2930354799 [SCTP]: Add RCU synchronization around sctp_localaddr_list
sctp_localaddr_list is modified dynamically via NETDEV_UP
and NETDEV_DOWN events, but there is not synchronization
between writer (even handler) and readers.  As a result,
the readers can access an entry that has been freed and
crash the sytem.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Sridhar Samdurala <sri@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-09-16 16:02:12 -07:00
Wei Yongjun
cb243a1a9f SCTP: Fix to handle invalid parameter length correctly
If an INIT with invalid parameter length look like this:
Parameter Type : 1
Parameter Length: 800
and not contain any payload, SCTP will ignore this  parameter and send
back a INIT-ACK.
This patch is fix to handle this invalid parameter length correctly.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-08-30 16:44:27 -04:00
Vlad Yasevich
609ee4679b SCTP: Abort on COOKIE-ECHO if backlog is exceeded.
Currently we abort on the INIT chunk we our backlog is currenlty
exceeded.  Delay this about untill COOKIE-ECHO to give the user
time to accept the socket.  Also, make sure that we treat
sk_max_backlog of 0 as no connections allowed.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-08-30 14:12:25 -04:00
Vlad Yasevich
498d63071e SCTP: Correctly disable listening when backlog is 0.
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-08-30 14:03:58 -04:00
Vlad Yasevich
d0ce92910b SCTP: Do not retransmit chunks that are newer then rtt.
When performing a retransmit, do not include the chunk if
it was sent less then 1 rtt ago.  The reason is that we
may receive the SACK very soon and wouldn't retransmit.
Suggested by Randy Stewart.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-08-30 13:56:06 -04:00
Vlad Yasevich
cc75689a4c SCTP: Uncomfirmed transports can't become Inactive
Do not set Unconfirmed transports to Inactive state.  This may
result in an inactive association being destroyed since we start
counting errors on "inactive" transports against the association.
This was found at the SCTP interop event.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-08-30 13:55:41 -04:00
Vlad Yasevich
2772b495ef SCTP: Pick the correct port when binding to 0.
sctp_bindx() allows the use of unspecified port.  The problem is
that every address we bind to ends up selecting a new port if
the user specified port 0.  This patch allows re-use of the
already selected port when the port from bindx was 0.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-08-30 13:55:20 -04:00
Wei Yongjun
d99fa42963 SCTP: Use net_ratelimit to suppress error messages print too fast
When multi bundling SHUTDOWN-ACK message is received in ESTAB state,
this will cause "sctp protocol violation state" message print many times.
If SHUTDOWN-ACK is bundled 300 times in one packet, message will be
print 300 times. The same problem also exists when received unexpected
HEARTBEAT-ACK message which is bundled message times.

This patch used net_ratelimit() to suppress error messages print too fast.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-08-30 13:52:56 -04:00
Wei Yongjun
00f1c2df2a SCTP: Fix to encode PROTOCOL VIOLATION error cause correctly
PROTOCOL VIOLATION error cause in ABORT is bad encode when make abort
chunk. When SCTP encode ABORT chunk with PROTOCOL VIOLATION error cause,
it just add the error messages to PROTOCOL VIOLATION error cause, the
rest four bytes(struct sctp_paramhdr) is just add to the chunk, not
change the length of error cause. This cause the ABORT chunk to be a bad
format. The chunk is like this:

ABORT chunk
  Chunk type: ABORT (6)
  Chunk flags: 0x00
  Chunk length: 72 (*1)
  Protocol violation cause
    Cause code: Protocol violation (0x000d)
    Cause length: 62 (*2)
    Cause information: 5468652063756D756C61746976652074736E2061636B2062...
    Cause padding: 0000
[Needless] 00030010
Chunk Length(*1) = 72 but Cause length(*2) only 62, not include the
extend 4 bytes.
((72 - sizeof(chunk_hdr)) = 68) != (62 +3) / 4 * 4

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-08-30 13:50:48 -04:00
Wei Yongjun
8d614ade51 SCTP: Fix sctp_addto_chunk() to add pad with correct length
At function sctp_addto_chunk(), it do pad before add payload to chunk if
chunk length is not 4-byte alignment. But it do pad with a bad length.
This patch fixed this probleam.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-08-30 11:56:17 -04:00
Vlad Yasevich
ab3e5e7b65 SCTP: Assign stream sequence numbers to the entire message
Currently we only assign the sequence number to a packet that
we are about to transmit.  This however breaks the Partial
Reliability extensions, because it's possible for us to
never transmit a packet, i.e. it expires before we get to send
it.  In such cases, if the message contained multiple SCTP
fragments, and we did manage to send the first part of the
message, the Stream sequence numbers would get into invalid
state and cause receiver to stall.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-08-29 13:34:34 -04:00
Vlad Yasevich
ea2dfb3733 SCTP: properly clean up fragment and ordering queues during FWD-TSN.
When we recieve a FWD-TSN (meaning the peer has abandoned the data),
we need to clean up any partially received messages that may be
hanging out on the re-assembly or re-ordering queues.  This is
a MUST requirement that was not properly done before.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com.>
2007-08-29 13:34:33 -04:00
Wei Yongjun
5f8f1c3c87 SCTP: remove useless code in function sctp_init_cause
Some code in function sctp_init_cause() seem useless, this patch remove
them.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-08-02 10:56:07 -04:00
Wei Yongjun
aecedeab6f SCTP: drop SACK if ctsn is not less than the next tsn of assoc
We need to drop the SACK if the peer is attempting to acknowledge
unset data, i.e.  the CTSN in the SACK is greater or equal to the
next TSN we will send.

Example:
Endpoint A                                      Endpoint B
                             <---------------   DATA (TSN=1)
SACK(TSN=1) ---------------> 
                             <---------------   DATA (TSN=2)
                             <---------------   DATA (TSN=3)
                             <---------------   DATA (TSN=4)
                             <---------------   DATA (TSN=5)
SACK(TSN=1000) --------------->
                             <---------------   DATA (TSN=6)
                             <---------------   DATA (TSN=7)

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-08-02 10:41:18 -04:00
Vlad Yasevich
e4d1feab5d SCTP: IPv4 mapped addr not returned in SCTPv6 accept()
When issuing a connect call on an AF_INET6 sctp socket with
a IPv4-mapped destination, the peer address that is returned
by getpeeraddr() should be v4-mapped as well.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-08-01 11:19:06 -04:00
Dave Johnson
b225b884a1 SCTP: IPv4 mapped addr not returned in SCTPv6 accept()
An accept() call on a SCTPv6 socket that returns due to connection of
a IPv4 mapped peer will fill out the 'struct sockaddr' with a zero
IPv6 address instead of the IPv4 mapped address of the peer.

This is due to the v4mapped flag not getting copied into the new
socket on accept() as well as a missing check for INET6 socket type in
sctp_v4_to_sk_*addr().

Signed-off-by: Dave Johnson <djohnson@sw.starentnetworks.com>
Cc: Srinivas Akkipeddi <sakkiped@starentnetworks.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-08-01 11:19:06 -04:00
Sebastian Siewior
cc121fa87a sctp: fix shadow symbol in net/sctp/tsnmap.c
net/sctp/tsnmap.c:164:16: warning: symbol '_end' shadows an earlier one
include/asm-generic/sections.h:13:13: originally declared here

Renamed renamed _end to end_ and _start (for consistence).

Signed-off-by: Sebastian Siewior <sebastian@breakpoint.cc>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-08-01 11:19:06 -04:00
Sebastian Siewior
d6f9fdaf64 sctp: try to fix readlock
unlock the reader lock in error case.

Signed-off-by: Sebastian Siewior <sebastian@breakpoint.cc>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-08-01 11:19:06 -04:00
sebastian@breakpoint.cc
c86dabcf00 sctp: remove shadowed symbols
Fixes the following sparse warnings:
net/sctp/sm_make_chunk.c:1457:9: warning: symbol 'len' shadows an earlier one
net/sctp/sm_make_chunk.c:1356:23: originally declared here
net/sctp/socket.c:1534:22: warning: symbol 'chunk' shadows an earlier one
net/sctp/socket.c:1387:20: originally declared here

Signed-off-by: Sebastian Siewior <sebastian@breakpoint.cc>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-08-01 11:19:06 -04:00
sebastian@breakpoint.cc
0a5fcb9cf8 sctp: move global declaration to header file.
sctp_chunk_cachep & sctp_bucket_cachep is used module global, so move it
to a header file.

Signed-off-by: Sebastian Siewior <sebastian@breakpoint.cc>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-08-01 11:19:06 -04:00
sebastian@breakpoint.cc
046752104c sctp: make locally used function static
Forward declarion is static, the function itself is not. Make it
consistent.

Signed-off-by: Sebastian Siewior <sebastian@breakpoint.cc>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-08-01 11:19:05 -04:00
Paul Mundt
20c2df83d2 mm: Remove slab destructors from kmem_cache_create().
Slab destructors were no longer supported after Christoph's
c59def9f22 change. They've been
BUGs for both slab and slub, and slob never supported them
either.

This rips out support for the dtor pointer from kmem_cache_create()
completely and fixes up every single callsite in the kernel (there were
about 224, not including the slab allocator definitions themselves,
or the documentation references).

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-07-20 10:11:58 +09:00
YOSHIFUJI Hideaki
9cbcbf4e01 [NET] SCTP: Fix whitespace errors.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2007-07-19 10:44:50 +09:00
Philippe De Muyter
56b3d975bb [NET]: Make all initialized struct seq_operations const.
Make all initialized struct seq_operations in net/ const

Signed-off-by: Philippe De Muyter <phdm@macqel.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-10 23:07:31 -07:00
Vlad Yasevich
1669d857a2 SCTP: Add scope_id validation for link-local binds
SCTP currently permits users to bind to link-local addresses,
but doesn't verify that the scope id specified at bind matches
the interface that the address is configured on.  It was report
that this can hang a system.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-05 17:40:15 -07:00
Vlad Yasevich
f50f95cab7 SCTP: Check to make sure file is valid before setting timeout
In-kernel sockets created with sock_create_kern don't usually
have a file and file descriptor allocated to them.  As a result,
when SCTP tries to check the non-blocking flag, we Oops when
dereferencing a NULL file pointer.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-05 17:40:11 -07:00
Vlad Yasevich
3663c30660 SCTP: Fix thinko in sctp_copy_laddrs()
Correctly dereference bytes_copied in sctp_copy_laddrs().
I totally must have spaced when doing this.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-05 17:40:08 -07:00
Zach Brown
5131a184a3 SCTP: lock_sock_nested in sctp_sock_migrate
sctp_sock_migrate() grabs the socket lock on a newly allocated socket while
holding the socket lock on an old socket.  lockdep worries that this might
be a recursive lock attempt.

 task/3026 is trying to acquire lock:
  (sk_lock-AF_INET){--..}, at: [<ffffffff88105b8c>] sctp_sock_migrate+0x2e3/0x327 [sctp]
 but task is already holding lock:
  (sk_lock-AF_INET){--..}, at: [<ffffffff8810891f>] sctp_accept+0xdf/0x1e3 [sctp]

This patch tells lockdep that this locking is safe by using
lock_sock_nested().

Signed-off-by: Zach Brown <zach.brown@oracle.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-06-26 09:29:09 -04:00
Neil Horman
186e234358 SCTP: Fix sctp_getsockopt_get_peer_addrs
This is the split out of the patch that we agreed I should split
out from my last patch.  It changes space_left to be computed in the same
way the to variable is.  I know we talked about changing space_left to an
int, but I think size_t is more appropriate, since we should never have
negative space in our buffer, and computing using offsetof means space_left
should now never drop below zero.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-06-19 09:47:32 -04:00
Neil Horman
408f22e81e SCTP: update sctp_getsockopt helpers to allow oversized buffers
I noted the other day while looking at a bug that was ostensibly
in some perl networking library, that we strictly avoid allowing getsockopt
operations to complete if we pass in oversized buffers.  This seems to make
libraries like Perl::NET malfunction since it seems to allocate oversized
buffers for use in several operations.  It also seems to be out of line with
the way udp, tcp and ip getsockopt routines handle buffer input (since the
*optlen pointer in both an input and an output and gets set to the length
of the data that we copy into the buffer).  This patch brings our getsockopt
helpers into line with other protocols, and allows us to accept oversized
buffers for our getsockopt operations.  Tested by me with good results.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-06-19 09:46:34 -04:00
Vlad Yasevich
06ad391919 [SCTP] Don't disable PMTU discovery when mtu is small
Right now, when we receive a mtu estimate smaller then minim
threshold in the ICMP message, we disable the path mtu discovery
on the transport.  This leads to the never increasing sctp fragmentation
point even when the real path mtu has increased.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2007-06-13 20:44:42 +00:00
Vlad Yasevich
8a4794914f [SCTP] Flag a pmtu change request
Currently, if the socket is owned by the user, we drop the ICMP
message.  As a result SCTP forgets that path MTU changed and
never adjusting it's estimate.  This causes all subsequent
packets to be fragmented.  With this patch, we'll flag the association
that it needs to udpate it's estimate based on the already updated
routing information.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Acked-by: Sridhar Samudrala <sri@us.ibm.com>
2007-06-13 20:44:42 +00:00
Vlad Yasevich
c910b47e18 [SCTP] Update pmtu handling to be similar to tcp
Introduce new function sctp_transport_update_pmtu that updates
the transports and destination caches view of the path mtu.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Acked-by: Sridhar Samudrala <sri@us.ibm.com>
2007-06-13 20:44:42 +00:00
Vlad Yasevich
fe979ac169 [SCTP] Fix leak in sctp_getsockopt_local_addrs when copy_to_user fails
If the copy_to_user or copy_user calls fail in sctp_getsockopt_local_addrs(),
the function should free locally allocated storage before returning error.
Spotted by Coverity.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Acked-by: Sridhar Samudrala <sri@us.ibm.com>
2007-06-13 20:44:41 +00:00
Vlad Yasevich
8b35805693 [SCTP]: Allow unspecified port in sctp_bindx()
Allow sctp_bindx() to accept multiple address with
unspecified port.  In this case, all addresses inherit
the first bound port.  We still catch full mis-matches.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Acked-by: Sridhar Samudrala <sri@us.ibm.com>
2007-06-13 20:44:41 +00:00
Vlad Yasevich
d570ee490f [SCTP]: Correctly set daddr for IPv6 sockets during peeloff
During peeloff of AF_INET6 socket, the inet6_sk(sk)->daddr
wasn't set correctly since the code was assuming IPv4 only.
Now we use a correct call to set the destination address.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Acked-by: Sridhar Samudrala <sri@us.ibm.com>
2007-06-13 20:44:41 +00:00
Bill Nottingham
75202e7689 [NET]: Fix comparisons of unsigned < 0.
Recent gcc versions emit warnings when unsigned variables are
compared < 0 or >= 0.

Signed-off-by: Bill Nottingham <notting@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-06-03 18:08:47 -07:00
Jan Engelhardt
29e32ccdec [SCTP]: Use menuconfig objects.
Use menuconfigs instead of menus, so the whole menu can be disabled at
once instead of going through all options.

Signed-off-by: Jan Engelhardt <jengelh@gmx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-24 16:36:48 -07:00
Vlad Yasevich
ac40e41f4d [SCTP]: Do not include ABORT chunk header in the notification.
The socket API draft is unclear about whether to include the
chunk header or not.  Recent discussion on the sctp implementors
mailing list clarified that the chunk header shouldn't be included,
but the error parameter header still needs to be there.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-10 23:45:31 -07:00
Vlad Yasevich
70b57b814e [SCTP]: Correctly copy addresses in sctp_copy_laddrs
I broke the  non-wildcard case recently.  This is to fixes it.
Now, explictitly bound addresses can ge retrieved using the API.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-10 23:45:30 -07:00
Vlad Yasevich
8dc4984a6b [SCTP]: Prevent OOPS if hmac modules didn't load
SCTP was checking for NULL when trying to detect hmac
allocation failure where it should have been using IS_ERR.
Also, print a rate limited warning to the log telling the
user what happend.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-10 23:45:29 -07:00
Michael Opdenacker
59c51591a0 Fix occurrences of "the the "
Signed-off-by: Michael Opdenacker <michael@free-electrons.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2007-05-09 08:57:56 +02:00
Vlad Yasevich
07d9396771 [SCTP]: Set assoc_id correctly during INIT collision.
During the INIT/COOKIE-ACK collision cases, it's possible to get
into a situation where the association id is not yet set at the time
of the user event generation.  As a result, user events have an
association id set to 0 which will confuse applications.

This happens if we hit case B of duplicate cookie processing.
In the particular example found and provided by Oscar Isaula
<Oscar.Isaula@motorola.com>, flow looks like this:
A				B
---- INIT------->  (lost)
	    <---------INIT------
---- INIT-ACK--->
	    <------ Cookie ECHO

When the Cookie Echo is received, we end up trying to update the
association that was created on A as a result of the (lost) INIT,
but that association doesn't have the ID set yet.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-04 13:55:27 -07:00
Sridhar Samudrala
827bf12236 [SCTP]: Re-order SCTP initializations to avoid race with sctp_rcv()
Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-04 13:36:30 -07:00
Vlad Yasevich
ce5325c133 [SCTP]: Fix the SO_REUSEADDR handling to be similar to TCP.
Update the SO_REUSEADDR handling to also check for listen state.  This
was muliple listening server sockets can't be created and they will
not steal packets from each other.

Reported by Paolo Galtieri <pgaltieri@mvista.com>

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-04 13:34:49 -07:00
Vlad Yasevich
16d00fb776 [SCTP]: Verify all destination ports in sctp_connectx.
We need to make sure that all destination ports are the same, since
the association really must not connect to multiple different ports
at once.  This was reported on the sctp-impl list.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-04 13:34:09 -07:00
Pavel Emelianov
7562f876cd [NET]: Rework dev_base via list_head (v3)
Cleanup of dev_base list use, with the aim to simplify making device
list per-namespace. In almost every occasion, use of dev_base variable
and dev->next pointer could be easily replaced by for_each_netdev
loop. A few most complicated places were converted to using
first_netdev()/next_netdev().

Signed-off-by: Pavel Emelianov <xemul@openvz.org>
Acked-by: Kirill Korotaev <dev@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-03 15:13:45 -07:00
Vlad Yasevich
aad97f38b7 [SCTP]: Fix sctp_getsockopt_local_addrs_old() to use local storage.
sctp_getsockopt_local_addrs_old() in net/sctp/socket.c calls
copy_to_user() while the spinlock addr_lock is held. this should not
be done as copy_to_user() might sleep. the call to
sctp_copy_laddrs_to_user() while holding the lock is also problematic
as it calls copy_to_user()

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-28 21:09:04 -07:00
Stephen Hemminger
3ff50b7997 [NET]: cleanup extra semicolons
Spring cleaning time...

There seems to be a lot of places in the network code that have
extra bogus semicolons after conditionals.  Most commonly is a
bogus semicolon after: switch() { }

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:29:24 -07:00
Herbert Xu
604763722c [NET]: Treat CHECKSUM_PARTIAL as CHECKSUM_UNNECESSARY
When a transmitted packet is looped back directly, CHECKSUM_PARTIAL
maps to the semantics of CHECKSUM_UNNECESSARY.  Therefore we should
treat it as such in the stack.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:28:43 -07:00
Vlad Yasevich
703315712c [SCTP]: Implement SCTP_MAX_BURST socket option.
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:28:04 -07:00
Vlad Yasevich
a5a35e7675 [SCTP]: Implement sac_info field in SCTP_ASSOC_CHANGE notification.
As stated in the sctp socket api draft:

   sac_info: variable

   If the sac_state is SCTP_COMM_LOST and an ABORT chunk was received
   for this association, sac_info[] contains the complete ABORT chunk as
   defined in the SCTP specification RFC2960 [RFC2960] section 3.3.7.

We now save received ABORT chunks into the sac_info field and pass that
to the user.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:28:03 -07:00
Vlad Yasevich
bdf3092af6 [SCTP]: Honor flags when setting peer address parameters
Parameters only take effect when a corresponding flag bit is set
and a value is specified. This means we need to check the flags
in addition to checking for non-zero value.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:28:02 -07:00
Vlad Yasevich
1ae4114dce [SCTP]: Implement SCTP_ADDR_CONFIRMED state for ADDR_CHNAGE event
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:28:01 -07:00
Vlad Yasevich
d49d91d79a [SCTP]: Implement SCTP_PARTIAL_DELIVERY_POINT option.
This option induces partial delivery to run as soon
as the specified amount of data has been accumulated on
the association.  However, we give preference to fully
reassembled messages over PD messages.  In any case,
window and buffer is freed up.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@.hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:28:00 -07:00
Vlad Yasevich
b6e1331f3c [SCTP]: Implement SCTP_FRAGMENT_INTERLEAVE socket option
This option was introduced in draft-ietf-tsvwg-sctpsocket-13.  It
prevents head-of-line blocking in the case of one-to-many endpoint.
Applications enabling this option really must enable SCTP_SNDRCV event
so that they would know where the data belongs.  Based on an
earlier patch by Ivan Skytte Jørgensen.

Additionally, this functionality now permits multiple associations
on the same endpoint to enter Partial Delivery.  Applications should
be extra careful, when using this functionality, to track EOR indicators.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:27:59 -07:00
Arnaldo Carvalho de Melo
27a884dc3c [SK_BUFF]: Convert skb->tail to sk_buff_data_t
So that it is also an offset from skb->head, reduces its size from 8 to 4 bytes
on 64bit architectures, allowing us to combine the 4 bytes hole left by the
layer headers conversion, reducing struct sk_buff size to 256 bytes, i.e. 4
64byte cachelines, and since the sk_buff slab cache is SLAB_HWCACHE_ALIGN...
:-)

Many calculations that previously required that skb->{transport,network,
mac}_header be first converted to a pointer now can be done directly, being
meaningful as offsets or pointers.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:26:28 -07:00
Arnaldo Carvalho de Melo
2e07fa9cd3 [SK_BUFF]: Use offsets for skb->{mac,network,transport}_header on 64bit architectures
With this we save 8 bytes per network packet, leaving a 4 bytes hole to be used
in further shrinking work, likely with the offsetization of other pointers,
such as ->{data,tail,end}, at the cost of adds, that were minimized by the
usual practice of setting skb->{mac,nh,n}.raw to a local variable that is then
accessed multiple times in each function, it also is not more expensive than
before with regards to most of the handling of such headers, like setting one
of these headers to another (transport to network, etc), or subtracting, adding
to/from it, comparing them, etc.

Now we have this layout for sk_buff on a x86_64 machine:

[acme@mica net-2.6.22]$ pahole vmlinux sk_buff
struct sk_buff {
	struct sk_buff *       next;             /*   0   8 */
	struct sk_buff *       prev;             /*   8   8 */
	struct rb_node         rb;               /*  16  24 */
	struct sock *          sk;               /*  40   8 */
	ktime_t                tstamp;           /*  48   8 */
	struct net_device *    dev;              /*  56   8 */
	/* --- cacheline 1 boundary (64 bytes) --- */
	struct net_device *    input_dev;        /*  64   8 */
	sk_buff_data_t         transport_header; /*  72   4 */
	sk_buff_data_t         network_header;   /*  76   4 */
	sk_buff_data_t         mac_header;       /*  80   4 */

	/* XXX 4 bytes hole, try to pack */

	struct dst_entry *     dst;              /*  88   8 */
	struct sec_path *      sp;               /*  96   8 */
	char                   cb[48];           /* 104  48 */
	/* cacheline 2 boundary (128 bytes) was 24 bytes ago*/
	unsigned int           len;              /* 152   4 */
	unsigned int           data_len;         /* 156   4 */
	unsigned int           mac_len;          /* 160   4 */
	union {
		__wsum         csum;             /*       4 */
		__u32          csum_offset;      /*       4 */
	};                                       /* 164   4 */
	__u32                  priority;         /* 168   4 */
	__u8                   local_df:1;       /* 172   1 */
	__u8                   cloned:1;         /* 172   1 */
	__u8                   ip_summed:2;      /* 172   1 */
	__u8                   nohdr:1;          /* 172   1 */
	__u8                   nfctinfo:3;       /* 172   1 */
	__u8                   pkt_type:3;       /* 173   1 */
	__u8                   fclone:2;         /* 173   1 */
	__u8                   ipvs_property:1;  /* 173   1 */

	/* XXX 2 bits hole, try to pack */

	__be16                 protocol;         /* 174   2 */
	void    (*destructor)(struct sk_buff *); /* 176   8 */
	struct nf_conntrack *  nfct;             /* 184   8 */
	/* --- cacheline 3 boundary (192 bytes) --- */
	struct sk_buff *       nfct_reasm;       /* 192   8 */
	struct nf_bridge_info *nf_bridge;        /* 200   8 */
	__u16                  tc_index;         /* 208   2 */
	__u16                  tc_verd;          /* 210   2 */
	dma_cookie_t           dma_cookie;       /* 212   4 */
	__u32                  secmark;          /* 216   4 */
	__u32                  mark;             /* 220   4 */
	unsigned int           truesize;         /* 224   4 */
	atomic_t               users;            /* 228   4 */
	unsigned char *        head;             /* 232   8 */
	unsigned char *        data;             /* 240   8 */
	unsigned char *        tail;             /* 248   8 */
	/* --- cacheline 4 boundary (256 bytes) --- */
	unsigned char *        end;              /* 256   8 */
}; /* size: 264, cachelines: 5 */
   /* sum members: 260, holes: 1, sum holes: 4 */
   /* bit holes: 1, sum bit holes: 2 bits */
   /* last cacheline: 8 bytes */

On 32 bits nothing changes, and pointers continue to be used with the compiler
turning all this abstraction layer into dust. But there are some sk_buff
validation tricks that are now possible, humm... :-)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:26:21 -07:00
Arnaldo Carvalho de Melo
b0e380b1d8 [SK_BUFF]: unions of just one member don't get anything done, kill them
Renaming skb->h to skb->transport_header, skb->nh to skb->network_header and
skb->mac to skb->mac_header, to match the names of the associated helpers
(skb[_[re]set]_{transport,network,mac}_header).

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:26:20 -07:00
Arnaldo Carvalho de Melo
a27ef749e7 [SCTP]: Eliminate some pointer attributions to the skb layer headers
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:25:30 -07:00
Arnaldo Carvalho de Melo
88c7664f13 [SK_BUFF]: Introduce icmp_hdr(), remove skb->h.icmph
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:25:23 -07:00
Arnaldo Carvalho de Melo
2c0fd387b0 [SCTP]: Introduce sctp_hdr()
For consistency with all the other skb->h.raw accessors.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:25:19 -07:00
Arnaldo Carvalho de Melo
ea2ae17d64 [SK_BUFF]: Introduce skb_transport_offset()
For the quite common 'skb->h.raw - skb->data' sequence.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:25:16 -07:00
Arnaldo Carvalho de Melo
0660e03f6b [SK_BUFF]: Introduce ipv6_hdr(), remove skb->nh.ipv6h
Now the skb->nh union has just one member, .raw, i.e. it is just like the
skb->mac union, strange, no? I'm just leaving it like that till the transport
layer is done with, when we'll rename skb->mac.raw to skb->mac_header (or
->mac_header_offset?), ditto for ->{h,nh}.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:25:14 -07:00
Arnaldo Carvalho de Melo
eddc9ec53b [SK_BUFF]: Introduce ip_hdr(), remove skb->nh.iph
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:25:10 -07:00
Arnaldo Carvalho de Melo
1ced98e81d [SK_BUFF] ipv6: More skb_reset_network_header conversions related to skb_pull
Now related to this form:

skb->nh.ipv6h = (struct ipv6hdr *)skb_put(skb, length);

That, as the others, is done when skb->tail is still equal to skb->data, making
the conversion to skb_reset_network_header possible.

Also one more case equivalent to skb->nh.raw = skb->data, of this form:

iph = (struct ipv6hdr *)skb->data;
<SNIP>
skb->nh.ipv6h = iph;

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:24:54 -07:00
Arnaldo Carvalho de Melo
31c7711b50 [SK_BUFF]: Some more simple skb_reset_network_header conversions
This time of the type:

 skb->nh.iph = (struct iphdr *)skb->data;

That is completely equivalent to:

 skb->nh.raw = skb->data;

Wonder why people love casts... :-)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:24:50 -07:00
Vlad Yasevich
d0cf0d9940 [SCTP]: Do not interleave non-fragments when in partial delivery
The way partial delivery is currently implemnted, it is possible to
intereleave a message (either from another steram, or unordered) that
is not part of partial delivery process.  The only way to this is for
a message to not be a fragment and be 'in order' or unorderd for a
given stream.  This will result in bypassing the reassembly/ordering
queues where things live duing partial delivery, and the
message will be delivered to the socket in the middle of partial delivery.

This is a two-fold problem, in that:
1.  the app now must check the stream-id and flags which it may not
be doing.
2.  this clearing partial delivery state from the association and results
in ulp hanging.

This patch is a band-aid over a much bigger problem in that we
don't do stream interleave.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-18 14:16:09 -07:00
Paolo Galtieri
0304ff8a2d [SCTP]: Unmap v4mapped addresses during SCTP_BINDX_REM_ADDR operation.
During the sctp_bindx() call to add additional addresses to the
endpoint, any v4mapped addresses are converted and stored as regular
v4 addresses.  However, when trying to remove these addresses, the
v4mapped addresses are not converted and the operation fails.  This
patch unmaps the addresses on during the remove operation as well.

Signed-off-by: Paolo Galtieri <pgaltieri@mvista.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-17 13:13:42 -07:00
Tsutomu Fujii
ea2bc483ff [SCTP]: Fix assertion (!atomic_read(&sk->sk_rmem_alloc)) failed message
In current implementation, LKSCTP does receive buffer accounting for
data in sctp_receive_queue and pd_lobby. However, LKSCTP don't do
accounting for data in frag_list when data is fragmented. In addition,
LKSCTP doesn't do accounting for data in reasm and lobby queue in
structure sctp_ulpq.
When there are date in these queue, assertion failed message is printed
in inet_sock_destruct because sk_rmem_alloc of oldsk does not become 0
when socket is destroyed.

Signed-off-by: Tsutomu Fujii <t-fujii@nb.jp.nec.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-17 13:13:37 -07:00
Vlad Yasevich
289f42492c [SCTP]: Correctly reset ssthresh when restarting association
Reset ssthresh to the correct value (peer's a_rwnd) when restarting
association.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-22 12:26:25 -07:00
Vlad Yasevich
749bf9215e [SCTP]: Reset some transport and association variables on restart
If the association has been restarted, we need to reset the
transport congestion variables as well as accumulated error
counts and CACC variables.  If we do not, the association
will use the wrong values and may terminate prematurely.

This was found with a scenario where the peer restarted
the association when lksctp was in the last HB timeout for
its association.  The restart happened, but the error counts
have not been reset and when the timeout occurred, a newly
restarted association was terminated due to excessive
retransmits.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-20 00:09:45 -07:00
Vlad Yasevich
fb78525ae1 [SCTP]: Increment error counters on user requested HBs.
2960bis states (Section 8.3):

   D) Request an on-demand HEARTBEAT on a specific destination transport
      address of a given association.

   The endpoint should increment the respective error counter of the
   destination transport address each time a HEARTBEAT is sent to that
   address and not acknowledged within one RTO.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-20 00:09:44 -07:00
Vlad Yasevich
0b58a81146 [SCTP]: Clean up stale data during association restart
During association restart we may have stale data sitting
on the ULP queue waiting for ordering or reassembly.  This
data may cause severe problems if not cleaned up.  In particular
stale data pending ordering may cause problems with receive
window exhaustion if our peer has decided to restart the
association.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-20 00:09:43 -07:00
Jarek Poplawski
e2eb8d4528 [SCTP] ipv6: inconsistent lock state ipv6_add_addr/sctp_v6_copy_addrlist
lockdep found that dev->lock taken from softirq in ipv6_add_addr
is also taken in sctp_v6_copy_addrlist with softirqs enabled, so
lockup is possible.

Noticed-by: Simon Arlott <simon@arlott.org>
Signed-off-by: Jarek Poplawski <jarkao2@o2.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-08 14:43:41 -08:00
Vlad Yasevich
1845a579e0 [SCTP]: Strike the transport before updating rto.
Once we reach a point where we exceed the max.path.retrans, strike the
transport before updating the rto.  This will force transport switch at
the right time, instead of 1 retransmit too late.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-02-26 11:42:50 -08:00
Vlad Yasevich
8c4a2d41a7 [SCTP]: Fix connection hang/slowdown with PR-SCTP
The problem that this patch corrects happens when all of the following
conditions are satisfisfied:
 1.  PR-SCTP is used and the timeout on the chunks is set below RTO.Max.
 2.  One of the paths on a multihomed associations is brought down.

In this scenario, data will expire within the rto of the initial
transmission and will never be retransmitted.  However this data still
fills the send buffer and is counted against the association as outstanding
data.  This causes any new data not to be sent and retransmission to not
happen.

The fix is to discount the abandoned data from the outstanding count and
peers rwnd estimation.  This allows new data to be sent and a retransmission
timer restarted.  Even though this new data will most likely expire within
the rto, the timer still counts as a strike against the transport and forces
the FORWARD-TSN chunk to be retransmitted as well.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-02-26 11:42:49 -08:00
Eric W. Biederman
0b4d414714 [PATCH] sysctl: remove insert_at_head from register_sysctl
The semantic effect of insert_at_head is that it would allow new registered
sysctl entries to override existing sysctl entries of the same name.  Which is
pain for caching and the proc interface never implemented.

I have done an audit and discovered that none of the current users of
register_sysctl care as (excpet for directories) they do not register
duplicate sysctl entries.

So this patch simply removes the support for overriding existing entries in
the sys_sysctl interface since no one uses it or cares and it makes future
enhancments harder.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: David Howells <dhowells@redhat.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Andi Kleen <ak@muc.de>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Corey Minyard <minyard@acm.org>
Cc: Neil Brown <neilb@suse.de>
Cc: "John W. Linville" <linville@tuxdriver.com>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: Jan Kara <jack@ucw.cz>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: Mark Fasheh <mark.fasheh@oracle.com>
Cc: David Chinner <dgc@sgi.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Patrick McHardy <kaber@trash.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-14 08:09:59 -08:00
Tim Schmielau
cd354f1ae7 [PATCH] remove many unneeded #includes of sched.h
After Al Viro (finally) succeeded in removing the sched.h #include in module.h
recently, it makes sense again to remove other superfluous sched.h includes.
There are quite a lot of files which include it but don't actually need
anything defined in there.  Presumably these includes were once needed for
macros that used to live in sched.h, but moved to other header files in the
course of cleaning it up.

To ease the pain, this time I did not fiddle with any header files and only
removed #includes from .c-files, which tend to cause less trouble.

Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha,
arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig,
allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all
configs in arch/arm/configs on arm.  I also checked that no new warnings were
introduced by the patch (actually, some warnings are removed that were emitted
by unnecessarily included header files).

Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-14 08:09:54 -08:00
Arjan van de Ven
da7071d7e3 [PATCH] mark struct file_operations const 8
Many struct file_operations in the kernel can be "const".  Marking them const
moves these to the .rodata section, which avoids false sharing with potential
dirty data.  In addition it'll catch accidental writes at compile time to
these shared resources.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-12 09:48:46 -08:00
Linus Torvalds
cb18eccff4 Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: (45 commits)
  [IPV4]: Restore multipath routing after rt_next changes.
  [XFRM] IPV6: Fix outbound RO transformation which is broken by IPsec tunnel patch.
  [NET]: Reorder fields of struct dst_entry
  [DECNET]: Convert decnet route to use the new dst_entry 'next' pointer
  [IPV6]: Convert ipv6 route to use the new dst_entry 'next' pointer
  [IPV4]: Convert ipv4 route to use the new dst_entry 'next' pointer
  [NET]: Introduce union in struct dst_entry to hold 'next' pointer
  [DECNET]: fix misannotation of linkinfo_dn
  [DECNET]: FRA_{DST,SRC} are le16 for decnet
  [UDP]: UDP can use sk_hash to speedup lookups
  [NET]: Fix whitespace errors.
  [NET] XFRM: Fix whitespace errors.
  [NET] X25: Fix whitespace errors.
  [NET] WANROUTER: Fix whitespace errors.
  [NET] UNIX: Fix whitespace errors.
  [NET] TIPC: Fix whitespace errors.
  [NET] SUNRPC: Fix whitespace errors.
  [NET] SCTP: Fix whitespace errors.
  [NET] SCHED: Fix whitespace errors.
  [NET] RXRPC: Fix whitespace errors.
  ...
2007-02-11 11:38:13 -08:00
Robert P. J. Day
c376222960 [PATCH] Transform kmem_cache_alloc()+memset(0) -> kmem_cache_zalloc().
Replace appropriate pairs of "kmem_cache_alloc()" + "memset(0)" with the
corresponding "kmem_cache_zalloc()" call.

Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Andi Kleen <ak@muc.de>
Cc: Roland McGrath <roland@redhat.com>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: Greg KH <greg@kroah.com>
Acked-by: Joel Becker <Joel.Becker@oracle.com>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: Jan Kara <jack@ucw.cz>
Cc: Michael Halcrow <mhalcrow@us.ibm.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Stephen Smalley <sds@tycho.nsa.gov>
Cc: James Morris <jmorris@namei.org>
Cc: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11 10:51:27 -08:00