tcp: tcp_tso_autosize() minimum is one packet
authorEric Dumazet <edumazet@google.com>
Tue, 26 May 2015 15:55:28 +0000 (08:55 -0700)
committerDavid S. Miller <davem@davemloft.net>
Wed, 27 May 2015 03:21:29 +0000 (23:21 -0400)
commitd6a4e26afb80c049e7f94e1b7b506dcda61eee88
tree809c23a70ad711aa0f1456068cb73f9c1ac11da9
parent095dc8e0c3686d586a01a50abc3e1bb9ac633054
tcp: tcp_tso_autosize() minimum is one packet

By making sure sk->sk_gso_max_segs minimal value is one,
and sysctl_tcp_min_tso_segs minimal value is one as well,
tcp_tso_autosize() will return a non zero value.

We can then revert 843925f33fcc293d80acf2c5c8a78adf3344d49b
("tcp: Do not apply TSO segment limit to non-TSO packets")
and save few cpu cycles in fast path.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/core/sock.c
net/ipv4/sysctl_net_ipv4.c
net/ipv4/tcp_output.c