diff options
| author | Stephen Hemminger <shemminger@osdl.org> | 2006-01-03 16:03:49 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2006-01-03 16:03:49 -0800 |
| commit | 40efc6fa179f440a008333ea98f701bc35a1f97f (patch) | |
| tree | ef087df36868362c0238a0aa4373532622e49068 /net/ipv4/tcp_cong.c | |
| parent | 3c19065a1e2c862becc576bc65e54f2bc1cbffe6 (diff) | |
| download | linux-40efc6fa179f440a008333ea98f701bc35a1f97f.tar.gz linux-40efc6fa179f440a008333ea98f701bc35a1f97f.tar.xz | |
[TCP]: less inline's
TCP inline usage cleanup:
* get rid of inline in several places
* replace __inline__ with inline where possible
* move functions used in one file out of tcp.h
* let compiler decide on used once cases
On x86_64:
text data bss dec hex filename
3594701 648348 567400 4810449 4966d1 vmlinux.orig
3593133 648580 567400 4809113 496199 vmlinux
On sparc64:
text data bss dec hex filename
2538278 406152 530392 3474822 350586 vmlinux.ORIG
2536382 406384 530392 3473158 34ff06 vmlinux
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_cong.c')
| -rw-r--r-- | net/ipv4/tcp_cong.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/net/ipv4/tcp_cong.c b/net/ipv4/tcp_cong.c index c7cc62c8dc12..e688c687d62d 100644 --- a/net/ipv4/tcp_cong.c +++ b/net/ipv4/tcp_cong.c @@ -174,6 +174,34 @@ int tcp_set_congestion_control(struct sock *sk, const char *name) return err; } + +/* + * Linear increase during slow start + */ +void tcp_slow_start(struct tcp_sock *tp) +{ + if (sysctl_tcp_abc) { + /* RFC3465: Slow Start + * TCP sender SHOULD increase cwnd by the number of + * previously unacknowledged bytes ACKed by each incoming + * acknowledgment, provided the increase is not more than L + */ + if (tp->bytes_acked < tp->mss_cache) + return; + + /* We MAY increase by 2 if discovered delayed ack */ + if (sysctl_tcp_abc > 1 && tp->bytes_acked > 2*tp->mss_cache) { + if (tp->snd_cwnd < tp->snd_cwnd_clamp) + tp->snd_cwnd++; + } + } + tp->bytes_acked = 0; + + if (tp->snd_cwnd < tp->snd_cwnd_clamp) + tp->snd_cwnd++; +} +EXPORT_SYMBOL_GPL(tcp_slow_start); + /* * TCP Reno congestion control * This is special case used for fallback as well. |