Commit Graph

693242 Commits

Author SHA1 Message Date
Shahar Klein
191220396d net/mlx5: E-Switch, Unload the representors in the correct order
When changing from switchdev to legacy mode, all the representor port
devices (uplink nic and reps) are cleaned up. Part of this cleaning
process is removing the neigh entries and the hash table containing them.
However, a representor neigh entry might be linked to the uplink port
hash table and if the uplink nic is cleaned first the cleaning of the
representor will end up in null deref.
Fix that by unloading the representors in the opposite order of load.

Fixes: cb67b83292 ("net/mlx5e: Introduce SRIOV VF representors")
Signed-off-by: Shahar Klein <shahark@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2017-08-30 21:20:43 +03:00
Paul Blakey
08820528c9 net/mlx5e: Properly resolve TC offloaded ipv6 vxlan tunnel source address
Currently if vxlan tunnel ipv6 src isn't supplied the driver fails to
resolve it as part of the route lookup. The resulting encap header
is left with a zeroed out ipv6 src address so the packets are sent
with this src ip.

Use an appropriate route lookup API that also resolves the source
ipv6 address if it's not supplied.

Fixes: ce99f6b97f ('net/mlx5e: Support SRIOV TC encapsulation offloads for IPv6 tunnels')
Signed-off-by: Paul Blakey <paulb@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2017-08-30 21:20:43 +03:00
Inbar Karmy
5a8e12678c net/mlx5e: Don't override user RSS upon set channels
Currently, increasing the number of combined channels is changing
the RSS spread to use the new created channels.
Prevent the RSS spread change in case the user explicitly declare it,
to avoid overriding user configuration.

Tested:
when RSS default:

# ethtool -L ens8 combined 4
RSS spread will change and point to 4 channels.

# ethtool -X ens8 equal 4
# ethtool -L ens8 combined 6
RSS will not change after increasing the number of the channels.

Fixes: 8bf3686204 ('ethtool: ensure channel counts are within bounds during SCHANNELS')
Signed-off-by: Inbar Karmy <inbark@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2017-08-30 21:20:43 +03:00
Eran Ben Elisha
0556ce72ab net/mlx5e: Fix dangling page pointer on DMA mapping error
Function mlx5e_dealloc_rx_wqe is using page pointer value as an
indication to valid DMA mapping. In case that the mapping failed, we
released the page but kept the dangling pointer. Store the page pointer
only after the DMA mapping passed to avoid invalid page DMA unmap.

Fixes: bc77b240b3 ("net/mlx5e: Add fragmented memory support for RX multi packet WQE")
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2017-08-30 21:20:43 +03:00
Huy Nguyen
10a8d00707 net/mlx5: Remove the flag MLX5_INTERFACE_STATE_SHUTDOWN
MLX5_INTERFACE_STATE_SHUTDOWN is not used in the code.

Fixes: 5fc7197d3a ("net/mlx5: Add pci shutdown callback")
Signed-off-by: Huy Nguyen <huyn@mellanox.com>
Reviewed-by: Daniel Jurgens <danielj@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2017-08-30 21:20:43 +03:00
Huy Nguyen
b3cb538849 net/mlx5: Skip mlx5_unload_one if mlx5_load_one fails
There is an issue where the firmware fails during mlx5_load_one,
the health_care timer detects the issue and schedules a health_care call.
Then the mlx5_load_one detects the issue, cleans up and quits. Then
the health_care starts and calls mlx5_unload_one to clean up the resources
that no longer exist and causes kernel panic.

The root cause is that the bit MLX5_INTERFACE_STATE_DOWN is not set
after mlx5_load_one fails. The solution is removing the bit
MLX5_INTERFACE_STATE_DOWN and quit mlx5_unload_one if the
bit MLX5_INTERFACE_STATE_UP is not set. The bit MLX5_INTERFACE_STATE_DOWN
is redundant and we can use MLX5_INTERFACE_STATE_UP instead.

Fixes: 5fc7197d3a ("net/mlx5: Add pci shutdown callback")
Signed-off-by: Huy Nguyen <huyn@mellanox.com>
Reviewed-by: Daniel Jurgens <danielj@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2017-08-30 21:20:43 +03:00
Noa Osherovich
672d0880b7 net/mlx5: Fix arm SRQ command for ISSI version 0
Support for ISSI version 0 was recently broken as the arm_srq_cmd
command, which is used only for ISSI version 0, was given the opcode
for ISSI version 1 instead of ISSI version 0.

Change arm_srq_cmd to use the correct command opcode for ISSI version
0.

Fixes: af1ba291c5 ('{net, IB}/mlx5: Refactor internal SRQ API')
Signed-off-by: Noa Osherovich <noaos@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2017-08-30 21:20:42 +03:00
Huy Nguyen
9e10bf1d34 net/mlx5e: Fix DCB_CAP_ATTR_DCBX capability for DCBNL getcap.
Current code doesn't report DCB_CAP_DCBX_HOST capability when query
through getcap. User space lldptool expects capability to have HOST mode
set when it wants to configure DCBX CEE mode. In absence of HOST mode
capability, lldptool fails to switch to CEE mode.

This fix returns DCB_CAP_DCBX_HOST capability when port's DCBX
controlled mode is under software control.

Fixes: 3a6a931dfb ("net/mlx5e: Support DCBX CEE API")
Signed-off-by: Huy Nguyen <huyn@mellanox.com>
Reviewed-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2017-08-30 21:20:42 +03:00
Huy Nguyen
33c52b6718 net/mlx5e: Check for qos capability in dcbnl_initialize
qos capability is the master capability bit that determines
if the DCBX is supported for the PCI function. If this bit is off,
driver cannot run any dcbx code.

Fixes: e207b7e991 ("net/mlx5e: ConnectX-4 firmware support for DCBX")
Signed-off-by: Huy Nguyen <huyn@mellanox.com>
Reviewed-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2017-08-30 21:20:42 +03:00
Quan Nguyen
183db48127 drivers: net: xgene: Correct probe sequence handling
The phy is connected at early stage of probe but not properly
disconnected if error occurs.  This patch fixes the issue.

Also changing the return type of xgene_enet_check_phy_handle(),
since this function always returns success.

Signed-off-by: Quan Nguyen <qnguyen@apm.com>
Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-29 16:13:08 -07:00
Dan Carpenter
e7562597b4 nfp: double free on error in probe
Both the nfp_net_pf_app_start() and the nfp_net_pci_probe() functions
call nfp_net_pf_app_stop_ctrl(pf) so there is a double free.  The free
should be done from the probe function because it's allocated there so
I have removed the call from nfp_net_pf_app_start().

Fixes: 02082701b9 ("nfp: create control vNICs and wire up rx/tx")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-29 16:07:23 -07:00
David S. Miller
beae041307 Merge branch 'aquantia-fixes'
Pavel Belous says:

====================
net:ethernet:aquantia: Atlantic driver Update 2017-08-23

This series contains updates for aQuantia Atlantic driver.

It has bugfixes and some improvements.

Changes in v2:
 - "MCP state change" fix removed (will be sent as
    a separate fix after further investigation.)
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-29 15:11:44 -07:00
Pavel Belous
6d3f58e09f net:ethernet:aquantia: Show info message if bad firmware version detected.
We should inform user about wrong firmware version
by printing message in dmesg.

Fixes: 3d2ff7eebe26 ("net: ethernet: aquantia: Atlantic hardware abstraction layer")
Signed-off-by: Pavel Belous <Pavel.Belous@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-29 15:11:44 -07:00
Igor Russkikh
b21f502f84 net:ethernet:aquantia: Fix for multicast filter handling.
Since the HW supports up to 32 multicast filters we should
track count of multicast filters to avoid overflow.
If we attempt to add >32 multicast filter - just set NETIF_ALLMULTI flag
instead.

Fixes: 94f6c9e4cdf6 ("net: ethernet: aquantia: Support for NIC-specific code")
Signed-off-by: Igor Russkikh <Igor.Russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-29 15:11:44 -07:00
Pavel Belous
bd8ed4415f net:ethernet:aquantia: Fix for incorrect speed index.
The driver choose the optimal interrupt throttling settings depends
of current link speed.
Due this bug link_status field from aq_hw is never updated and as result
always used same interrupt throttling values.

Fixes: 3d2ff7eebe26 ("net: ethernet: aquantia: Atlantic hardware abstraction layer")
Signed-off-by: Pavel Belous <Pavel.Belous@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-29 15:11:44 -07:00
Pavel Belous
0a402e7b97 net:ethernet:aquantia: Workaround for HW checksum bug.
The hardware has the HW Checksum Offload bug when small
TCP patckets (with length <= 60 bytes) has wrong "checksum valid" bit.

The solution is - ignore checksum valid bit for small packets
(with length <= 60 bytes) and mark this as CHECKSUM_NONE to allow
network stack recalculate checksum itself.

Fixes: ccf9a5ed14be ("net: ethernet: aquantia: Atlantic A0 and B0 specific functions.")
Signed-off-by: Pavel Belous <Pavel.Belous@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-29 15:11:43 -07:00
Pavel Belous
64fc7953ff net:ethernet:aquantia: Fix for number of RSS queues.
The number of RSS queues should be not more than numbers of CPU.
Its does not make sense to increase perfomance, and also cause problems on
some motherboards.

Fixes: 94f6c9e4cdf6 ("net: ethernet: aquantia: Support for NIC-specific code")
Signed-off-by: Pavel Belous <Pavel.Belous@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-29 15:11:43 -07:00
Pavel Belous
278175aba3 net:ethernet:aquantia: Extra spinlocks removed.
This patch removes datapath spinlocks which does not perform any
useful work.

Fixes: 6e70637f9f1e ("net: ethernet: aquantia: Add ring support code")
Signed-off-by: Pavel Belous <Pavel.Belous@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-29 15:11:43 -07:00
Benjamin Poirier
edbd58be15 packet: Don't write vnet header beyond end of buffer
... which may happen with certain values of tp_reserve and maclen.

Fixes: 58d19b19cd ("packet: vnet_hdr support for tpacket_rcv")
Signed-off-by: Benjamin Poirier <bpoirier@suse.com>
Cc: Willem de Bruijn <willemb@google.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-29 15:09:13 -07:00
Parthasarathy Bhuvaragan
d55c60eba0 tipc: permit bond slave as bearer
For a bond slave device as a tipc bearer, the dev represents the bond
interface and orig_dev represents the slave in tipc_l2_rcv_msg().
Since we decode the tipc_ptr from bonding device (dev), we fail to
find the bearer and thus tipc links are not established.

In this commit, we register the tipc protocol callback per device and
look for tipc bearer from both the devices.

Signed-off-by: Parthasarathy Bhuvaragan <parthasarathy.bhuvaragan@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-29 15:07:33 -07:00
Xin Long
e8d411d298 ipv6: do not set sk_destruct in IPV6_ADDRFORM sockopt
ChunYu found a kernel warn_on during syzkaller fuzzing:

[40226.038539] WARNING: CPU: 5 PID: 23720 at net/ipv4/af_inet.c:152 inet_sock_destruct+0x78d/0x9a0
[40226.144849] Call Trace:
[40226.147590]  <IRQ>
[40226.149859]  dump_stack+0xe2/0x186
[40226.176546]  __warn+0x1a4/0x1e0
[40226.180066]  warn_slowpath_null+0x31/0x40
[40226.184555]  inet_sock_destruct+0x78d/0x9a0
[40226.246355]  __sk_destruct+0xfa/0x8c0
[40226.290612]  rcu_process_callbacks+0xaa0/0x18a0
[40226.336816]  __do_softirq+0x241/0x75e
[40226.367758]  irq_exit+0x1f6/0x220
[40226.371458]  smp_apic_timer_interrupt+0x7b/0xa0
[40226.376507]  apic_timer_interrupt+0x93/0xa0

The warn_on happned when sk->sk_rmem_alloc wasn't 0 in inet_sock_destruct.
As after commit f970bd9e3a ("udp: implement memory accounting helpers"),
udp has changed to use udp_destruct_sock as sk_destruct where it would
udp_rmem_release all rmem.

But IPV6_ADDRFORM sockopt sets sk_destruct with inet_sock_destruct after
changing family to PF_INET. If rmem is not 0 at that time, and there is
no place to release rmem before calling inet_sock_destruct, the warn_on
will be triggered.

This patch is to fix it by not setting sk_destruct in IPV6_ADDRFORM sockopt
any more. As IPV6_ADDRFORM sockopt only works for tcp and udp. TCP sock has
already set it's sk_destruct with inet_sock_destruct and UDP has set with
udp_destruct_sock since they're created.

Fixes: f970bd9e3a ("udp: implement memory accounting helpers")
Reported-by: ChunYu Wang <chunwang@redhat.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-29 10:54:40 -07:00
David S. Miller
04f1c4ad72 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec
Steffen Klassert says:

====================
pull request (net): ipsec 2017-08-29

1) Fix dst_entry refcount imbalance when using socket policies.
   From Lorenzo Colitti.

2) Fix locking when adding the ESP trailers.

3) Fix tailroom calculation for the ESP trailer by using
   skb_tailroom instead of skb_availroom.

4) Fix some info leaks in xfrm_user.
   From Mathias Krause.

Please pull or let me know if there are problems.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-29 09:37:06 -07:00
Florian Fainelli
c7848399ec net: dsa: Don't dereference dst->cpu_dp->netdev
If we do not have a master network device attached dst->cpu_dp will be
NULL and accessing cpu_dp->netdev will create a trace similar to the one
below. The correct check is on dst->cpu_dp period.

[    1.004650] DSA: switch 0 0 parsed
[    1.008078] Unable to handle kernel NULL pointer dereference at
virtual address 00000010
[    1.016195] pgd = c0003000
[    1.018918] [00000010] *pgd=80000000004003, *pmd=00000000
[    1.024349] Internal error: Oops: 206 [#1] SMP ARM
[    1.029157] Modules linked in:
[    1.032228] CPU: 0 PID: 1 Comm: swapper/0 Not tainted
4.13.0-rc6-00071-g45b45afab9bd-dirty #7
[    1.040772] Hardware name: Broadcom STB (Flattened Device Tree)
[    1.046704] task: ee08f840 task.stack: ee090000
[    1.051258] PC is at dsa_register_switch+0x5e0/0x9dc
[    1.056234] LR is at dsa_register_switch+0x5d0/0x9dc
[    1.061211] pc : [<c08fb28c>]    lr : [<c08fb27c>]    psr: 60000213
[    1.067491] sp : ee091d88  ip : 00000000  fp : 0000000c
[    1.072728] r10: 00000000  r9 : 00000001  r8 : ee208010
[    1.077965] r7 : ee2b57b0  r6 : ee2b5780  r5 : 00000000  r4 :
ee208e0c
[    1.084506] r3 : 00000000  r2 : 00040d00  r1 : 2d1b2000  r0 :
00000016
[    1.091050] Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM
Segment user
[    1.098199] Control: 32c5387d  Table: 00003000  DAC: fffffffd
[    1.103957] Process swapper/0 (pid: 1, stack limit = 0xee090210)

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: 6d3c8c0dd8 ("net: dsa: Remove master_netdev and use dst->cpu_dp->netdev")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-28 21:19:43 -07:00
Roopa Prabhu
ef9a5a62c6 bridge: check for null fdb->dst before notifying switchdev drivers
current switchdev drivers dont seem to support offloading fdb
entries pointing to the bridge device which have fdb->dst
not set to any port. This patch adds a NULL fdb->dst check in
the switchdev notifier code.

This patch fixes the below NULL ptr dereference:
$bridge fdb add 00:02:00:00:00:33 dev br0 self

[   69.953374] BUG: unable to handle kernel NULL pointer dereference at
0000000000000008
[   69.954044] IP: br_switchdev_fdb_notify+0x29/0x80
[   69.954044] PGD 66527067
[   69.954044] P4D 66527067
[   69.954044] PUD 7899c067
[   69.954044] PMD 0
[   69.954044]
[   69.954044] Oops: 0000 [#1] SMP
[   69.954044] Modules linked in:
[   69.954044] CPU: 1 PID: 3074 Comm: bridge Not tainted 4.13.0-rc6+ #1
[   69.954044] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS rel-1.7.5.1-0-g8936dbb-20141113_115728-nilsson.home.kraxel.org
04/01/2014
[   69.954044] task: ffff88007b827140 task.stack: ffffc90001564000
[   69.954044] RIP: 0010:br_switchdev_fdb_notify+0x29/0x80
[   69.954044] RSP: 0018:ffffc90001567918 EFLAGS: 00010246
[   69.954044] RAX: 0000000000000000 RBX: ffff8800795e0880 RCX:
00000000000000c0
[   69.954044] RDX: ffffc90001567920 RSI: 000000000000001c RDI:
ffff8800795d0600
[   69.954044] RBP: ffffc90001567938 R08: ffff8800795d0600 R09:
0000000000000000
[   69.954044] R10: ffffc90001567a88 R11: ffff88007b849400 R12:
ffff8800795e0880
[   69.954044] R13: ffff8800795d0600 R14: ffffffff81ef8880 R15:
000000000000001c
[   69.954044] FS:  00007f93d3085700(0000) GS:ffff88007fd00000(0000)
knlGS:0000000000000000
[   69.954044] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   69.954044] CR2: 0000000000000008 CR3: 0000000066551000 CR4:
00000000000006e0
[   69.954044] Call Trace:
[   69.954044]  fdb_notify+0x3f/0xf0
[   69.954044]  __br_fdb_add.isra.12+0x1a7/0x370
[   69.954044]  br_fdb_add+0x178/0x280
[   69.954044]  rtnl_fdb_add+0x10a/0x200
[   69.954044]  rtnetlink_rcv_msg+0x1b4/0x240
[   69.954044]  ? skb_free_head+0x21/0x40
[   69.954044]  ? rtnl_calcit.isra.18+0xf0/0xf0
[   69.954044]  netlink_rcv_skb+0xed/0x120
[   69.954044]  rtnetlink_rcv+0x15/0x20
[   69.954044]  netlink_unicast+0x180/0x200
[   69.954044]  netlink_sendmsg+0x291/0x370
[   69.954044]  ___sys_sendmsg+0x180/0x2e0
[   69.954044]  ? filemap_map_pages+0x2db/0x370
[   69.954044]  ? do_wp_page+0x11d/0x420
[   69.954044]  ? __handle_mm_fault+0x794/0xd80
[   69.954044]  ? vma_link+0xcb/0xd0
[   69.954044]  __sys_sendmsg+0x4c/0x90
[   69.954044]  SyS_sendmsg+0x12/0x20
[   69.954044]  do_syscall_64+0x63/0xe0
[   69.954044]  entry_SYSCALL64_slow_path+0x25/0x25
[   69.954044] RIP: 0033:0x7f93d2bad690
[   69.954044] RSP: 002b:00007ffc7217a638 EFLAGS: 00000246 ORIG_RAX:
000000000000002e
[   69.954044] RAX: ffffffffffffffda RBX: 00007ffc72182eac RCX:
00007f93d2bad690
[   69.954044] RDX: 0000000000000000 RSI: 00007ffc7217a670 RDI:
0000000000000003
[   69.954044] RBP: 0000000059a1f7f8 R08: 0000000000000006 R09:
000000000000000a
[   69.954044] R10: 00007ffc7217a400 R11: 0000000000000246 R12:
00007ffc7217a670
[   69.954044] R13: 00007ffc72182a98 R14: 00000000006114c0 R15:
00007ffc72182aa0
[   69.954044] Code: 1f 00 66 66 66 66 90 55 48 89 e5 48 83 ec 20 f6 47
20 04 74 0a 83 fe 1c 74 09 83 fe 1d 74 2c c9 66 90 c3 48 8b 47 10 48 8d
55 e8 <48> 8b 70 08 0f b7 47 1e 48 83 c7 18 48 89 7d f0 bf 03 00 00 00
[   69.954044] RIP: br_switchdev_fdb_notify+0x29/0x80 RSP:
ffffc90001567918
[   69.954044] CR2: 0000000000000008
[   69.954044] ---[ end trace 03e9eec4a82c238b ]---

Fixes: 6b26b51b1d ("net: bridge: Add support for notifying devices about FDB add/del")
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-28 16:14:00 -07:00
Xin Long
1e2ea8ad37 ipv6: set dst.obsolete when a cached route has expired
Now it doesn't check for the cached route expiration in ipv6's
dst_ops->check(), because it trusts dst_gc that would clean the
cached route up when it's expired.

The problem is in dst_gc, it would clean the cached route only
when it's refcount is 1. If some other module (like xfrm) keeps
holding it and the module only release it when dst_ops->check()
fails.

But without checking for the cached route expiration, .check()
may always return true. Meanwhile, without releasing the cached
route, dst_gc couldn't del it. It will cause this cached route
never to expire.

This patch is to set dst.obsolete with DST_OBSOLETE_KILL in .gc
when it's expired, and check obsolete != DST_OBSOLETE_FORCE_CHK
in .check.

Note that this is even needed when ipv6 dst_gc timer is removed
one day. It would set dst.obsolete in .redirect and .update_pmtu
instead, and check for cached route expiration when getting it,
just like what ipv4 route does.

Reported-by: Jianlin Shi <jishi@redhat.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-28 15:45:04 -07:00
Wei Wang
4e587ea71b ipv6: fix sparse warning on rt6i_node
Commit c5cff8561d adds rcu grace period before freeing fib6_node. This
generates a new sparse warning on rt->rt6i_node related code:
  net/ipv6/route.c:1394:30: error: incompatible types in comparison
  expression (different address spaces)
  ./include/net/ip6_fib.h:187:14: error: incompatible types in comparison
  expression (different address spaces)

This commit adds "__rcu" tag for rt6i_node and makes sure corresponding
rcu API is used for it.
After this fix, sparse no longer generates the above warning.

Fixes: c5cff8561d ("ipv6: add rcu grace period before freeing fib6_node")
Signed-off-by: Wei Wang <weiwan@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-28 15:34:40 -07:00
Stefano Brivio
0f3086868e cxgb4: Fix stack out-of-bounds read due to wrong size to t4_record_mbox()
Passing commands for logging to t4_record_mbox() with size
MBOX_LEN, when the actual command size is actually smaller,
causes out-of-bounds stack accesses in t4_record_mbox() while
copying command words here:

	for (i = 0; i < size / 8; i++)
		entry->cmd[i] = be64_to_cpu(cmd[i]);

Up to 48 bytes from the stack are then leaked to debugfs.

This happens whenever we send (and log) commands described by
structs fw_sched_cmd (32 bytes leaked), fw_vi_rxmode_cmd (48),
fw_hello_cmd (48), fw_bye_cmd (48), fw_initialize_cmd (48),
fw_reset_cmd (48), fw_pfvf_cmd (32), fw_eq_eth_cmd (16),
fw_eq_ctrl_cmd (32), fw_eq_ofld_cmd (32), fw_acl_mac_cmd(16),
fw_rss_glb_config_cmd(32), fw_rss_vi_config_cmd(32),
fw_devlog_cmd(32), fw_vi_enable_cmd(48), fw_port_cmd(32),
fw_sched_cmd(32), fw_devlog_cmd(32).

The cxgb4vf driver got this right instead.

When we call t4_record_mbox() to log a command reply, a MBOX_LEN
size can be used though, as get_mbox_rpl() will fill cmd_rpl up
completely.

Fixes: 7f080c3f2f ("cxgb4: Add support to enable logging of firmware mailbox commands")
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-28 15:24:23 -07:00
Maxime Ripard
ad4540cc5a net: stmmac: sun8i: Remove the compatibles
Since the bindings have been controversial, and we follow the DT stable ABI
rule, we shouldn't let a driver with a DT binding that might change slip
through in a stable release.

Remove the compatibles to make sure the driver will not probe and no-one
will start using the binding currently implemented. This commit will
obviously need to be reverted in due time.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-28 15:22:42 -07:00
David S. Miller
c73c8a8e07 Merge branch 'nfp-flow-dissector-layer'
Pieter Jansen van Vuuren says:

====================
nfp: fix layer calculation and flow dissector use

Previously when calculating the supported key layers MPLS, IPv4/6
TTL and TOS were not considered. Formerly flow dissectors were referenced
without first checking that they are in use and correctly populated by TC.
Additionally this patch set fixes the incorrect use of mask field for vlan
matching.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-28 15:20:25 -07:00
Pieter Jansen van Vuuren
6afd33e438 nfp: remove incorrect mask check for vlan matching
Previously the vlan tci field was incorrectly exact matched. This patch
fixes this by using the flow dissector to populate the vlan tci field.

Fixes: 5571e8c9f2 ("nfp: extend flower matching capabilities")
Signed-off-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-28 15:20:24 -07:00
Pieter Jansen van Vuuren
74af597510 nfp: fix supported key layers calculation
Previously when calculating the supported key layers MPLS, IPv4/6
TTL and TOS were not considered. This patch checks that the TTL and
TOS fields are masked out before offloading. Additionally this patch
checks that MPLS packets are correctly handled, by not offloading them.

Fixes: af9d842c13 ("nfp: extend flower add flow offload")
Signed-off-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-28 15:20:24 -07:00
Pieter Jansen van Vuuren
a7cd39e0c7 nfp: fix unchecked flow dissector use
Previously flow dissectors were referenced without first checking that
they are in use and correctly populated by TC. This patch fixes this by
checking each flow dissector key before referencing them.

Fixes: 5571e8c9f2 ("nfp: extend flower matching capabilities")
Signed-off-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-28 15:20:24 -07:00
David S. Miller
77146b5d79 Merge branch 'l2tp-tunnel-refs'
Guillaume Nault says:

====================
l2tp: fix some l2tp_tunnel_find() issues in l2tp_netlink

Since l2tp_tunnel_find() doesn't take a reference on the tunnel it
returns, its users are almost guaranteed to be racy.

This series defines l2tp_tunnel_get() which can be used as a safe
replacement, and converts some of l2tp_tunnel_find() users in the
l2tp_netlink module.

Other users often combine this issue with other more or less subtle
races. They will be fixed incrementally in followup series.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-28 11:34:59 -07:00
Guillaume Nault
e702c1204e l2tp: hold tunnel used while creating sessions with netlink
Use l2tp_tunnel_get() to retrieve tunnel, so that it can't go away on
us. Otherwise l2tp_tunnel_destruct() might release the last reference
count concurrently, thus freeing the tunnel while we're using it.

Fixes: 309795f4be ("l2tp: Add netlink control API for L2TP")
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-28 11:34:58 -07:00
Guillaume Nault
4e4b21da3a l2tp: hold tunnel while handling genl TUNNEL_GET commands
Use l2tp_tunnel_get() instead of l2tp_tunnel_find() so that we get
a reference on the tunnel, preventing l2tp_tunnel_destruct() from
freeing it from under us.

Also move l2tp_tunnel_get() below nlmsg_new() so that we only take
the reference when needed.

Fixes: 309795f4be ("l2tp: Add netlink control API for L2TP")
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-28 11:34:58 -07:00
Guillaume Nault
8c0e421525 l2tp: hold tunnel while handling genl tunnel updates
We need to make sure the tunnel is not going to be destroyed by
l2tp_tunnel_destruct() concurrently.

Fixes: 309795f4be ("l2tp: Add netlink control API for L2TP")
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-28 11:34:58 -07:00
Guillaume Nault
bb0a32ce43 l2tp: hold tunnel while processing genl delete command
l2tp_nl_cmd_tunnel_delete() needs to take a reference on the tunnel, to
prevent it from being concurrently freed by l2tp_tunnel_destruct().

Fixes: 309795f4be ("l2tp: Add netlink control API for L2TP")
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-28 11:34:58 -07:00
Guillaume Nault
54652eb12c l2tp: hold tunnel while looking up sessions in l2tp_netlink
l2tp_tunnel_find() doesn't take a reference on the returned tunnel.
Therefore, it's unsafe to use it because the returned tunnel can go
away on us anytime.

Fix this by defining l2tp_tunnel_get(), which works like
l2tp_tunnel_find(), but takes a reference on the returned tunnel.
Caller then has to drop this reference using l2tp_tunnel_dec_refcount().

As l2tp_tunnel_dec_refcount() needs to be moved to l2tp_core.h, let's
simplify the patch and not move the L2TP_REFCNT_DEBUG part. This code
has been broken (not even compiling) in May 2012 by
commit a4ca44fa57 ("net: l2tp: Standardize logging styles")
and fixed more than two years later by
commit 29abe2fda5 ("l2tp: fix missing line continuation"). So it
doesn't appear to be used by anyone.

Same thing for l2tp_tunnel_free(); instead of moving it to l2tp_core.h,
let's just simplify things and call kfree_rcu() directly in
l2tp_tunnel_dec_refcount(). Extra assertions and debugging code
provided by l2tp_tunnel_free() didn't help catching any of the
reference counting and socket handling issues found while working on
this series.

Fixes: 309795f4be ("l2tp: Add netlink control API for L2TP")
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-28 11:34:58 -07:00
Guillaume Nault
9ee369a405 l2tp: initialise session's refcount before making it reachable
Sessions must be fully initialised before calling
l2tp_session_add_to_tunnel(). Otherwise, there's a short time frame
where partially initialised sessions can be accessed by external users.

Fixes: dbdbc73b44 ("l2tp: fix duplicate session creation")
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-28 11:28:33 -07:00
Antoine Tenart
4c22868264 net: mvpp2: fix the mac address used when using PPv2.2
The mac address is only retrieved from h/w when using PPv2.1. Otherwise
the variable holding it is still checked and used if it contains a valid
value. As the variable isn't initialized to an invalid mac address
value, we end up with random mac addresses which can be the same for all
the ports handled by this PPv2 driver.

Fixes this by initializing the h/w mac address variable to {0}, which is
an invalid mac address value. This way the random assignation fallback
is called and all ports end up with their own addresses.

Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Fixes: 2697582144 ("net: mvpp2: handle misc PPv2.1/PPv2.2 differences")
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-28 11:24:52 -07:00
Aleksander Morgado
3b638f0f0b cdc_ncm: flag the u-blox TOBY-L4 as wwan
The u-blox TOBY-L4 is a LTE Advanced (Cat 6) module with HSPA+ and 2G
fallback.

Unlike the TOBY-L2, this module has one single USB layout and exposes
several TTYs for control and a NCM interface for data. Connecting this
module may be done just by activating the desired PDP context with
'AT+CGACT=1,<cid>' and then running DHCP on the NCM interface.

Signed-off-by: Aleksander Morgado <aleksander@aleksander.es>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-28 11:24:03 -07:00
Jesper Dangaard Brouer
1e22391e8f net: missing call of trace_napi_poll in busy_poll_stop
Noticed that busy_poll_stop() also invoke the drivers napi->poll()
function pointer, but didn't have an associated call to trace_napi_poll()
like all other call sites.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-28 11:22:21 -07:00
Mathias Krause
931e79d7a7 xfrm_user: fix info leak in build_aevent()
The memory reserved to dump the ID of the xfrm state includes a padding
byte in struct xfrm_usersa_id added by the compiler for alignment. To
prevent the heap info leak, memset(0) the sa_id before filling it.

Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Fixes: d51d081d65 ("[IPSEC]: Sync series - user")
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2017-08-28 10:58:02 +02:00
Mathias Krause
e3e5fc1698 xfrm_user: fix info leak in build_expire()
The memory reserved to dump the expired xfrm state includes padding
bytes in struct xfrm_user_expire added by the compiler for alignment. To
prevent the heap info leak, memset(0) the remainder of the struct.
Initializing the whole structure isn't needed as copy_to_user_state()
already takes care of clearing the padding bytes within the 'state'
member.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2017-08-28 10:58:02 +02:00
Mathias Krause
50329c8a34 xfrm_user: fix info leak in xfrm_notify_sa()
The memory reserved to dump the ID of the xfrm state includes a padding
byte in struct xfrm_usersa_id added by the compiler for alignment. To
prevent the heap info leak, memset(0) the whole struct before filling
it.

Cc: Herbert Xu <herbert@gondor.apana.org.au>
Fixes: 0603eac0d6 ("[IPSEC]: Add XFRMA_SA/XFRMA_POLICY for delete notification")
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2017-08-28 10:58:02 +02:00
Mathias Krause
5fe0d4bd8f xfrm_user: fix info leak in copy_user_offload()
The memory reserved to dump the xfrm offload state includes padding
bytes of struct xfrm_user_offload added by the compiler for alignment.
Add an explicit memset(0) before filling the buffer to avoid the heap
info leak.

Cc: Steffen Klassert <steffen.klassert@secunet.com>
Fixes: d77e38e612 ("xfrm: Add an IPsec hardware offloading API")
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2017-08-28 10:58:02 +02:00
David S. Miller
f63ae01d89 wireless-drivers fixes for 4.13
Only one iwlwifi patch this time.
 
 iwlwifi
 
 * fix multiple times reported lockdep warning found by new locking
   annotation introduced in v4.13-rc1
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Merge tag 'wireless-drivers-for-davem-2017-08-25' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers

Kalle Valo says:

====================
wireless-drivers fixes for 4.13

Only one iwlwifi patch this time.

iwlwifi

* fix multiple times reported lockdep warning found by new locking
  annotation introduced in v4.13-rc1
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-25 20:11:53 -07:00
Paolo Abeni
64f0f5d18a udp6: set rx_dst_cookie on rx_dst updates
Currently, in the udp6 code, the dst cookie is not initialized/updated
concurrently with the RX dst used by early demux.

As a result, the dst_check() in the early_demux path always fails,
the rx dst cache is always invalidated, and we can't really
leverage significant gain from the demux lookup.

Fix it adding udp6 specific variant of sk_rx_dst_set() and use it
to set the dst cookie when the dst entry is really changed.

The issue is there since the introduction of early demux for ipv6.

Fixes: 5425077d73 ("net: ipv6: Add early demux handler for UDP unicast")
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-25 20:09:13 -07:00
Christophe Jaillet
2207d182c1 net: sxgbe: check memory allocation failure
Check memory allocation failure and return -ENOMEM in such a case, as
already done few lines below for another memory allocation.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-25 20:07:07 -07:00
David S. Miller
681e9e867e Merge branch 'r8169-Be-drop-monitor-friendly'
Florian Fainelli says:

====================
r8169: Be drop monitor friendly

First patch may be questionable but no other driver appears to be
doing that and while it is defendable to account for left packets as
dropped during TX clean, this appears misleading. I picked Stanislaw
changes which brings us back to 2010, but this was present from
pre-git days as well.

Second patch fixes the two missing calls to dev_consume_skb_any().
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-25 19:13:28 -07:00