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| author | Eric Dumazet <edumazet@google.com> | 2013-02-21 13:18:52 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-02-22 00:15:58 +0100 |
| commit | 08dcdbf6a7b9d14c2302c5bd0c5390ddf122f664 (patch) | |
| tree | fc1d00005fda323296b93064416d255b81fdab73 /mm | |
| parent | qlcnic: Bump up the version to 5.1.35 (diff) | |
| download | linux-08dcdbf6a7b9d14c2302c5bd0c5390ddf122f664.tar.xz linux-08dcdbf6a7b9d14c2302c5bd0c5390ddf122f664.zip | |
ipv6: use a stronger hash for tcp
It looks like its possible to open thousands of TCP IPv6
sessions on a server, all landing in a single slot of TCP hash
table. Incoming packets have to lookup sockets in a very
long list.
We should hash all bits from foreign IPv6 addresses, using
a salt and hash mix, not a simple XOR.
inet6_ehashfn() can also separately use the ports, instead
of xoring them.
Reported-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Yuchung Cheng <ycheng@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions