| commit | f27070158d6754765f2f5fd1617e8e42a0ea2318 | |
| author | Eric Dumazet <edumazet@google.com> | |
| Thu, 1 Aug 2013 13:49:52 +0000 (1 06:49 -0700) | ||
| committer | David S. Miller <davem@davemloft.net> | |
| Sun, 4 Aug 2013 04:55:52 +0000 (3 21:55 -0700) | ||
| tree | e203a11394a14d0a4659933e6210e7bfe0f50661 | treesnapshot (tar.gz zip) |
| parent | 0e76a3a587fc7abda2badf249053b427baad255e | commitdiff |
ax88179_178a: avoid copy of tx tcp packets
ax88179_tx_fixup() has quite complex code trying to push 8 bytes
of control data (len/mss), but fails to do it properly for TCP packets,
incurring an extra copy and point of memory allocation failure.
Lets use the simple and approved way.
dev->needed_headroom being 8, all frames should have 8 bytes of
headroom, so the extra copy should be unlikely anyway.
This patch should improve performance for TCP xmits.
Reported-by: Ming Lei <ming.lei@canonical.com>
Tested-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
ax88179_tx_fixup() has quite complex code trying to push 8 bytes
of control data (len/mss), but fails to do it properly for TCP packets,
incurring an extra copy and point of memory allocation failure.
Lets use the simple and approved way.
dev->needed_headroom being 8, all frames should have 8 bytes of
headroom, so the extra copy should be unlikely anyway.
This patch should improve performance for TCP xmits.
Reported-by: Ming Lei <ming.lei@canonical.com>
Tested-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| drivers/net/usb/ax88179_178a.c | diffblobblamehistory |