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| author | Tom Herbert <tom@herbertland.com> | 2015-07-28 16:02:06 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-07-29 22:44:05 -0700 |
| commit | 265f94ff54d62503663d9c788ba1f082e448f8b8 (patch) | |
| tree | 23b4f2c90130092b17f1c560331266cb85cb4a26 | |
| parent | 877d1f6291f8e391237e324be58479a3e3a7407c (diff) | |
| download | op-kernel-dev-265f94ff54d62503663d9c788ba1f082e448f8b8.zip op-kernel-dev-265f94ff54d62503663d9c788ba1f082e448f8b8.tar.gz | |
net: Recompute sk_txhash on negative routing advice
When a connection is failing a transport protocol calls
dst_negative_advice to try to get a better route. This patch includes
changing the sk_txhash in that function. This provides a rudimentary
method to try to find a different path in the network since sk_txhash
affects ECMP on the local host and through the network (via flow labels
or UDP source port in encapsulation).
Signed-off-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/net/sock.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/net/sock.h b/include/net/sock.h index fe735c4..24aa75c 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -1695,6 +1695,12 @@ static inline void sk_set_txhash(struct sock *sk) sk->sk_txhash = 1; } +static inline void sk_rethink_txhash(struct sock *sk) +{ + if (sk->sk_txhash) + sk_set_txhash(sk); +} + static inline struct dst_entry * __sk_dst_get(struct sock *sk) { @@ -1719,6 +1725,8 @@ static inline void dst_negative_advice(struct sock *sk) { struct dst_entry *ndst, *dst = __sk_dst_get(sk); + sk_rethink_txhash(sk); + if (dst && dst->ops->negative_advice) { ndst = dst->ops->negative_advice(dst); |
