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| author | John Heffner <jheffner@psc.edu> | 2006-03-20 21:32:58 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2006-03-20 21:32:58 -0800 |
| commit | 0e7b13685f9a06949ea3070c97c0f0085a08cd37 (patch) | |
| tree | 3ba0a11d61dc2dd64d7a93bb5cd70d58a46fec39 | |
| parent | 1d541ddd74802cfa0eb8a3864668851f6cd79bdf (diff) | |
| download | op-kernel-dev-0e7b13685f9a06949ea3070c97c0f0085a08cd37.zip op-kernel-dev-0e7b13685f9a06949ea3070c97c0f0085a08cd37.tar.gz | |
[TCP] mtu probing: move tcp-specific data out of inet_connection_sock
This moves some TCP-specific MTU probing state out of
inet_connection_sock back to tcp_sock.
Signed-off-by: John Heffner <jheffner@psc.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/linux/tcp.h | 6 | ||||
| -rw-r--r-- | include/net/inet_connection_sock.h | 2 | ||||
| -rw-r--r-- | net/ipv4/tcp_input.c | 4 | ||||
| -rw-r--r-- | net/ipv4/tcp_output.c | 4 |
4 files changed, 10 insertions, 6 deletions
diff --git a/include/linux/tcp.h b/include/linux/tcp.h index f2bb239..542d395 100644 --- a/include/linux/tcp.h +++ b/include/linux/tcp.h @@ -343,6 +343,12 @@ struct tcp_sock { __u32 seq; __u32 time; } rcvq_space; + +/* TCP-specific MTU probe information. */ + struct { + __u32 probe_seq_start; + __u32 probe_seq_end; + } mtu_probe; }; static inline struct tcp_sock *tcp_sk(const struct sock *sk) diff --git a/include/net/inet_connection_sock.h b/include/net/inet_connection_sock.h index b3abe33..4e5a9ff 100644 --- a/include/net/inet_connection_sock.h +++ b/include/net/inet_connection_sock.h @@ -114,8 +114,6 @@ struct inet_connection_sock { /* Information on the current probe. */ int probe_size; - __u32 probe_seq_start; - __u32 probe_seq_end; } icsk_mtup; u32 icsk_ca_priv[16]; #define ICSK_CA_PRIV_SIZE (16 * sizeof(u32)) diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index 0ac388e..195d835 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -2054,7 +2054,7 @@ tcp_fastretrans_alert(struct sock *sk, u32 prior_snd_una, /* MTU probe failure: don't reduce cwnd */ if (icsk->icsk_ca_state < TCP_CA_CWR && icsk->icsk_mtup.probe_size && - tp->snd_una == icsk->icsk_mtup.probe_seq_start) { + tp->snd_una == tp->mtu_probe.probe_seq_start) { tcp_mtup_probe_failed(sk); /* Restores the reduction we did in tcp_mtup_probe() */ tp->snd_cwnd++; @@ -2284,7 +2284,7 @@ static int tcp_clean_rtx_queue(struct sock *sk, __s32 *seq_rtt_p) /* MTU probing checks */ if (icsk->icsk_mtup.probe_size) { - if (!after(icsk->icsk_mtup.probe_seq_end, TCP_SKB_CB(skb)->end_seq)) { + if (!after(tp->mtu_probe.probe_seq_end, TCP_SKB_CB(skb)->end_seq)) { tcp_mtup_probe_success(sk, skb); } } diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c index 8197b5e..518e568 100644 --- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -1238,8 +1238,8 @@ static int tcp_mtu_probe(struct sock *sk) update_send_head(sk, tp, nskb); icsk->icsk_mtup.probe_size = tcp_mss_to_mtu(sk, nskb->len); - icsk->icsk_mtup.probe_seq_start = TCP_SKB_CB(nskb)->seq; - icsk->icsk_mtup.probe_seq_end = TCP_SKB_CB(nskb)->end_seq; + tp->mtu_probe.probe_seq_start = TCP_SKB_CB(nskb)->seq; + tp->mtu_probe.probe_seq_end = TCP_SKB_CB(nskb)->end_seq; return 1; } |
