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| author | Ben Hutchings <bhutchings@solarflare.com> | 2012-07-30 16:11:42 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-10-02 09:47:04 -0700 |
| commit | 09c403dc7c8e73a4f9c553e4d84aef68af25ff65 (patch) | |
| tree | 0a6bfbdde7aa192140a8b7398e58d3f9f9a7b953 /net/ipv4/tcp.c | |
| parent | 8a15a4b44f4f3348db373f70103b25a1175ea25b (diff) | |
| download | kernel_samsung_espresso10-09c403dc7c8e73a4f9c553e4d84aef68af25ff65.tar.gz kernel_samsung_espresso10-09c403dc7c8e73a4f9c553e4d84aef68af25ff65.tar.bz2 kernel_samsung_espresso10-09c403dc7c8e73a4f9c553e4d84aef68af25ff65.zip | |
tcp: Apply device TSO segment limit earlier
[ Upstream commit 1485348d2424e1131ea42efc033cbd9366462b01 ]
Cache the device gso_max_segs in sock::sk_gso_max_segs and use it to
limit the size of TSO skbs. This avoids the need to fall back to
software GSO for local TCP senders.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/ipv4/tcp.c')
| -rw-r--r-- | net/ipv4/tcp.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index b6ec23c7ffc..e57df66affc 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -739,7 +739,9 @@ static unsigned int tcp_xmit_size_goal(struct sock *sk, u32 mss_now, old_size_goal + mss_now > xmit_size_goal)) { xmit_size_goal = old_size_goal; } else { - tp->xmit_size_goal_segs = xmit_size_goal / mss_now; + tp->xmit_size_goal_segs = + min_t(u16, xmit_size_goal / mss_now, + sk->sk_gso_max_segs); xmit_size_goal = tp->xmit_size_goal_segs * mss_now; } } |