diff options
author | Herbert Xu <herbert@gondor.apana.org.au> | 2007-11-18 18:48:08 -0800 |
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committer | David S. Miller <davem@davemloft.net> | 2007-11-18 18:48:08 -0800 |
commit | 21df56c6e2372e09c916111efb6c14c372a5ab2e (patch) | |
tree | c5b8e2c6f5a9951b267137229cb18e2b53878d01 /kernel/sysctl_check.c | |
parent | 483b23ffa3a5f44767038b0a676d757e0668437e (diff) |
[TCP]: Fix TCP header misalignment
Indeed my previous change to alloc_pskb has made it possible
for the TCP header to be misaligned iff the MTU is not a multiple
of 4 (and less than a page). So I suspect the optimised IPsec
MTU calculation is giving you just such an MTU :)
This patch fixes it by changing alloc_pskb to make sure that
the size is at least 32-bit aligned. This does not cause the
problem fixed by the previous patch because max_header is always
32-bit aligned which means that in the SG/NOTSO case this will
be a no-op.
I thought about putting this in the callers but all the current
callers are from TCP. If and when we get a non-TCP caller we
can always create a TCP wrapper for this function and move the
alignment over there.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/sysctl_check.c')
0 files changed, 0 insertions, 0 deletions