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0d3a421d28
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Geir Ola Vaagland 0d3a421d28 net: sctp: implement rfc6458, 5.3.5. SCTP_RCVINFO cmsg support 
This patch implements section 5.3.5. of RFC6458, that is, support
for 'SCTP Receive Information Structure' (SCTP_RCVINFO) which is
placed into ancillary data cmsghdr structure for each recvmsg()
call.

This option can be enabled/disabled via setsockopt(2) on SOL_SCTP
level by setting an int value with 1/0 for SCTP_RECVRCVINFO in user
space applications as per RFC6458, section 8.1.29.

The sctp_rcvinfo structure is defined as per RFC as below ...

  struct sctp_rcvinfo {
    uint16_t rcv_sid;
    uint16_t rcv_ssn;
    uint16_t rcv_flags;
    <-- 2 bytes hole  -->
    uint32_t rcv_ppid;
    uint32_t rcv_tsn;
    uint32_t rcv_cumtsn;
    uint32_t rcv_context;
    sctp_assoc_t rcv_assoc_id;
  };

... and provided under cmsg_level IPPROTO_SCTP, cmsg_type
SCTP_RCVINFO, while cmsg_data[] contains struct sctp_rcvinfo.
An sctp_rcvinfo item always corresponds to the data in msg_iov.

Joint work with Daniel Borkmann.

Signed-off-by: Geir Ola Vaagland <geirola@gmail.com>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-16 14:40:03 -07:00
..
9p 9P: remove unnecessary break after return 2014-07-15 16:27:00 -07:00
802 net: set name_assign_type in alloc_netdev() 2014-07-15 16:12:48 -07:00
8021q Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-07-16 14:09:34 -07:00
appletalk Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-07-16 14:09:34 -07:00
atm net: set name_assign_type in alloc_netdev() 2014-07-15 16:12:48 -07:00
ax25 net: Fix use after free by removing length arg from sk_data_ready callbacks. 2014-04-11 16:15:36 -04:00
batman-adv net: set name_assign_type in alloc_netdev() 2014-07-15 16:12:48 -07:00
bluetooth net: set name_assign_type in alloc_netdev() 2014-07-15 16:12:48 -07:00
bridge net: set name_assign_type in alloc_netdev() 2014-07-15 16:12:48 -07:00
caif caif: remove unnecessary break after goto 2014-07-15 16:27:01 -07:00
can can: add hash based access to single EFF frame filters 2014-05-19 09:38:24 +02:00
ceph Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client 2014-06-12 23:06:23 -07:00
core Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-07-16 14:09:34 -07:00
dcb net: Use netlink_ns_capable to verify the permisions of netlink messages 2014-04-24 13:44:54 -04:00
dccp inet: move ipv6only in sock_common 2014-07-01 23:46:21 -07:00
decnet net: Split sk_no_check into sk_no_check_{rx,tx} 2014-05-23 16:28:53 -04:00
dns_resolver Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-06-11 16:02:55 -07:00
dsa net: set name_assign_type in alloc_netdev() 2014-07-15 16:12:48 -07:00
ethernet net: set name_assign_type in alloc_netdev() 2014-07-15 16:12:48 -07:00
hsr net/hsr: Remove left-over never-true conditional code. 2014-07-11 15:04:40 -07:00
ieee802154 ieee802154: remove unnecessary break after goto 2014-07-15 16:27:01 -07:00
ipv4 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-07-16 14:09:34 -07:00
ipv6 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-07-16 14:09:34 -07:00
ipx net: Split sk_no_check into sk_no_check_{rx,tx} 2014-05-23 16:28:53 -04:00
irda irda: remove unnecessary break after return 2014-07-15 16:27:01 -07:00
iucv af_iucv: remove unnecessary break after goto 2014-07-15 16:27:00 -07:00
key af_key: remove unnecessary break after return 2014-07-15 16:27:00 -07:00
l2tp Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-07-16 14:09:34 -07:00
lapb
llc
mac80211 mac80211: remove unnecessary break after return 2014-07-15 16:27:00 -07:00
mac802154 net: set name_assign_type in alloc_netdev() 2014-07-15 16:12:48 -07:00
mpls gre: Call gso_make_checksum 2014-06-04 22:46:38 -07:00
netfilter netfilter: nf_nat: fix oops on netns removal 2014-06-16 13:58:54 +02:00
netlabel netlabel: remove unnecessary break after goto 2014-07-15 16:27:00 -07:00
netlink Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-07-16 14:09:34 -07:00
netrom net: set name_assign_type in alloc_netdev() 2014-07-15 16:12:48 -07:00
nfc NFC: remove unnecessary break after goto 2014-07-15 16:27:01 -07:00
openvswitch Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-07-16 14:09:34 -07:00
packet packet: remove unnecessary break after return 2014-07-15 16:26:59 -07:00
phonet net: set name_assign_type in alloc_netdev() 2014-07-15 16:12:48 -07:00
rds Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2014-06-12 14:27:40 -07:00
rfkill Merge git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next 2014-05-22 13:58:36 -04:00
rose net: set name_assign_type in alloc_netdev() 2014-07-15 16:12:48 -07:00
rxrpc af_rxrpc: Fix XDR length check in rxrpc key demarshalling. 2014-05-16 15:24:47 -04:00
sched net: set name_assign_type in alloc_netdev() 2014-07-15 16:12:48 -07:00
sctp net: sctp: implement rfc6458, 5.3.5. SCTP_RCVINFO cmsg support 2014-07-16 14:40:03 -07:00
sunrpc NFSv4: test SECINFO RPC_AUTH_GSS pseudoflavors for support 2014-06-24 18:46:58 -04:00
tipc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-07-16 14:09:34 -07:00
unix Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2014-06-12 14:27:40 -07:00
vmw_vsock vsock: Make transport the proto owner 2014-05-05 13:13:50 -04:00
wimax
wireless Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless 2014-07-10 17:00:24 -04:00
x25 net: Fix use after free by removing length arg from sk_data_ready callbacks. 2014-04-11 16:15:36 -04:00
xfrm Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-06-03 23:32:12 -07:00
compat.c net/compat: convert to COMPAT_SYSCALL_DEFINE with changing parameter types 2014-03-06 16:30:45 +01:00
Kconfig Merge branch 'for-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup 2014-04-03 13:05:42 -07:00
Makefile
nonet.c
socket.c net: use SYSCALL_DEFINEx for sys_recv 2014-04-16 15:15:05 -04:00
sysctl_net.c