linux-toradex.git/net/core, branch v2.6.32.14

scm: Only support SCM_RIGHTS on unix domain sockets.

2010-03-15T15:49:58+00:00

commit 76dadd76c265a0cdb5a76aa4eef03fcc9639b388 upstream.

We use scm_send and scm_recv on both unix domain and
netlink sockets, but only unix domain sockets support
everything required for file descriptor passing,
so error if someone attempts to pass file descriptors
over netlink sockets.

Signed-off-by: Eric W. Biederman 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

net: bug fix for vlan + gro issue

2010-03-15T15:49:39+00:00

[ Upstream commit e76b69cc0133952c98aa1ad6330cacacd269fd64 ]

Traffic (tcp) doesnot start on a vlan interface when gro is enabled.
Even the tcp handshake was not taking place.
This is because, the eth_type_trans call before the netif_receive_skb
in napi_gro_finish() resets the skb->dev to napi->dev from the previously
set vlan netdev interface. This causes the ip_route_input to drop the
incoming packet considering it as a packet coming from a martian source.

I could repro this on 2.6.32.7 (stable) and 2.6.33-rc7.
With this fix, the traffic starts and the test runs fine on both vlan
and non-vlan interfaces.

CC: Herbert Xu 
CC: Patrick McHardy 
Signed-off-by: Ajit Khaparde 
Signed-off-by: Herbert Xu 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

net-sysfs: Use rtnl_trylock in wireless sysfs methods.

2010-03-15T15:49:38+00:00

[ Upstream commit b8afe6416101549e877f8470f2a160df69676166 ]

The wireless sysfs methods like the rest of the networking sysfs
methods are removed with the rtnl_lock held and block until
the existing methods stop executing.  So use rtnl_trylock
and restart_syscall so that the code continues to work.

Signed-off-by: Eric W. Biederman 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

pktgen: Fix freezing problem

2010-02-23T15:37:56+00:00

commit 1b3f720bf033fde1fbb6231f9b156b918c5f68d8 upstream.

Add missing try_to_freeze() to one of the pktgen_thread_worker() code
paths so that it doesn't block suspend/hibernation.

Fixes http://bugzilla.kernel.org/show_bug.cgi?id=15006

Signed-off-by: Rafael J. Wysocki 
Reported-and-tested-by: Ciprian Dorin Craciun 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

dst: call cond_resched() in dst_gc_task()

2010-02-23T15:37:55+00:00

commit 2fc1b5dd99f66d93ffc23fd8df82d384c1a354c8 upstream.

Kernel bugzilla #15239

On some workloads, it is quite possible to get a huge dst list to
process in dst_gc_task(), and trigger soft lockup detection.

Fix is to call cond_resched(), as we run in process context.

Reported-by: Pawel Staszewski 
Tested-by: Pawel Staszewski 
Signed-off-by: Eric Dumazet 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

tcp: update the netstamp_needed counter when cloning sockets

2010-02-09T12:50:55+00:00

[ Upstream commit 704da560c0a0120d8869187f511491a00951a1d3 ]

This fixes a netstamp_needed accounting issue when the listen socket
has SO_TIMESTAMP set:

    s = socket(AF_INET, SOCK_STREAM, 0);
    setsockopt(s, SOL_SOCKET, SO_TIMESTAMP, 1); -> netstamp_needed = 1
    bind(s, ...);
    listen(s, ...);
    s2 = accept(s, ...); -> netstamp_needed = 1
    close(s2); -> netstamp_needed = 0
    close(s); -> netstamp_needed = -1

Signed-off-by: Octavian Purdila 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

net: Fix userspace RTM_NEWLINK notifications.

2009-12-18T22:05:38+00:00

commit d90a909e1f3e006a1d57fe11fd417173b6494701 upstream.

I received some bug reports about userspace programs having problems
because after RTM_NEWLINK was received they could not immeidate
access files under /proc/sys/net/ because they had not been
registered yet.

The problem was trivailly fixed by moving the userspace
notification from rtnetlink_event to the end of register_netdevice.

Signed-off-by: Eric W. Biederman 
Cc: David Miller 
Signed-off-by: Greg Kroah-Hartman

pktgen: Fix netdevice unregister

2009-11-24T22:50:53+00:00

When multi queue compatable names are used by pktgen (eg eth0@0),
we currently cannot unload a NIC driver if one of its device
is currently in use.

Allow pktgen_find_dev() to find pktgen devices by their suffix (netdev name)

Signed-off-by: Eric Dumazet 
Signed-off-by: David S. Miller

pktgen: Fix device name compares

2009-11-23T18:39:35+00:00

Commit e6fce5b916cd7f7f7 (pktgen: multiqueue etc.) tried to relax
the pktgen restriction of one device per kernel thread, adding a '@'
tag to device names.

Problem is we dont perform check on full pktgen device name.
This allows adding many time same 'device' to pktgen thread

 pgset "add_device eth0@0"

one session later :

 pgset "add_device eth0@0"

(This doesnt find previous device)

This consumes ~1.5 MBytes of vmalloc memory per round and also triggers
this warning :

[  673.186380] proc_dir_entry 'pktgen/eth0@0' already registered
[  673.186383] Modules linked in: pktgen ixgbe ehci_hcd psmouse mdio mousedev evdev [last unloaded: pktgen]
[  673.186406] Pid: 6219, comm: bash Tainted: G        W  2.6.32-rc7-03302-g41cec6f-dirty #16
[  673.186410] Call Trace:
[  673.186417]  [] warn_slowpath_common+0x7b/0xc0
[  673.186422]  [] warn_slowpath_fmt+0x41/0x50
[  673.186426]  [] proc_register+0x109/0x210
[  673.186433]  [] ? apic_timer_interrupt+0xe/0x20
[  673.186438]  [] proc_create_data+0x75/0xd0
[  673.186444]  [] pktgen_thread_write+0x568/0x640 [pktgen]
[  673.186449]  [] ? pktgen_thread_write+0x0/0x640 [pktgen]
[  673.186453]  [] proc_reg_write+0x84/0xc0
[  673.186458]  [] vfs_write+0xb8/0x180
[  673.186463]  [] sys_write+0x51/0x90
[  673.186468]  [] system_call_fastpath+0x16/0x1b
[  673.186470] ---[ end trace ccbb991b0a8d994d ]---

Solution to this problem is to use a odevname field (includes @ tag and suffix),
instead of using netdevice name.

Signed-off-by: Eric Dumazet 
Signed-off-by: Robert Olsson 
Signed-off-by: David S. Miller

gro: Fix illegal merging of trailer trash

2009-11-17T13:18:18+00:00

When we've merged skb's with page frags, and subsequently receive
a trailer skb (< MSS) that is not completely non-linear (this can
occur on Intel NICs if the packet size falls below the threshold),
GRO ends up producing an illegal GSO skb with a frag_list.

This is harmless unless the skb is then forwarded through an
interface that requires software GSO, whereupon the GSO code
will BUG.

This patch detects this case in GRO and avoids merging the
trailer skb.

Reported-by: Mark Wagner 
Signed-off-by: Herbert Xu 
Signed-off-by: David S. Miller