talos-op-linux/net/core/dev.c, branch v3.3

gro: more generic L2 header check

2012-02-08T23:26:54+00:00

Shlomo Pongratz reported GRO L2 header check was suited for Ethernet only, and failed on IB/ipoib traffic. He provided a patch faking a zeroed header to let GRO aggregates frames. Roland Dreier, Herbert Xu, and others suggested we change GRO L2 header check to be more generic, ie not assuming L2 header is 14 bytes, but taking into account hard_header_len. __napi_gro_receive() has special handling for the common case (Ethernet) to avoid a memcmp() call and use an inline optimized function instead. Signed-off-by: Eric Dumazet Reported-by: Shlomo Pongratz Cc: Roland Dreier Cc: Or Gerlitz Cc: Herbert Xu Tested-by: Sean Hefty Signed-off-by: David S. Miller

net: fix NULL-deref in WARN() in skb_gso_segment()

2012-01-17T20:51:23+00:00

Bug was introduced in commit c8f44affb7244f2ac3e703cab13d55ede27621bb. Signed-off-by: Michał Mirosław Signed-off-by: David S. Miller

net: WARN if skb_checksum_help() is called on skb requiring segmentation

2012-01-17T20:49:03+00:00

skb_checksum_help() has never done anything useful with skbs that require segmentation. Setting skb->ip_summed = CHECKSUM_NONE makes them invalid and provokes a later WARNing in skb_gso_segment(). Passing such an skb to skb_checksum_help() indicates a bug, so we should warn about it immediately. Move the warning from skb_gso_segment() into a shared function, and add gso_type and gso_size to it. Signed-off-by: Ben Hutchings Signed-off-by: David S. Miller

net: Use device model to get driver name in skb_gso_segment()

2012-01-17T15:31:12+00:00

ethtool operations generally require the caller to hold RTNL and are not safe to call in atomic context. The device model provides this information for most devices; we'll only lose it for some old ISA drivers. Signed-off-by: Ben Hutchings Acked-by: Herbert Xu Signed-off-by: David S. Miller

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2011-12-02T18:49:21+00:00

net: net_device flags is an unsigned int

2011-12-01T16:41:48+00:00

commit b00055aacdb ([NET] core: add RFC2863 operstate) changed net_device flags from unsigned short to unsigned int. Some core functions still assume its an unsigned short. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller

net/core: fix rollback handler in register_netdevice_notifier

2011-12-01T04:43:07+00:00

Within nested statements, the break statement terminates only the do, for, switch, or while statement that immediately encloses it, So replace the break with goto. Signed-off-by: RongQing.Li Signed-off-by: David S. Miller

net: Fix skb_update_prio RCU usage.

2011-11-29T23:25:17+00:00

Change function rcu_dereference to rcu_dereference_bh to avoid warning [ INFO: suspicious RCU usage. ] ------------------------------- net/core/dev.c:2459 suspicious rcu_dereference_check() usage! because we are locking with rcu_read_lock_bh(); in function dev_queue_xmit(struct sk_buff *skb) Signed-off-by: Igor Maravic Signed-off-by: David S. Miller

bql: Byte queue limits

2011-11-29T17:46:19+00:00

Networking stack support for byte queue limits, uses dynamic queue limits library. Byte queue limits are maintained per transmit queue, and a dql structure has been added to netdev_queue structure for this purpose. Configuration of bql is in the tx- sysfs directory for the queue under the byte_queue_limits directory. Configuration includes: limit_min, bql minimum limit limit_max, bql maximum limit hold_time, bql slack hold time Also under the directory are: limit, current byte limit inflight, current number of bytes on the queue Signed-off-by: Tom Herbert Acked-by: Eric Dumazet Signed-off-by: David S. Miller

net: Add queue state xoff flag for stack

2011-11-29T17:46:19+00:00

Create separate queue state flags so that either the stack or drivers can turn on XOFF. Added a set of functions used in the stack to determine if a queue is really stopped (either by stack or driver) Signed-off-by: Tom Herbert Acked-by: Eric Dumazet Signed-off-by: David S. Miller