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Allow tcp_parse_options to consult dst entry

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We need tcp_parse_options to be aware of dst_entry to
take into account per dst_entry TCP options settings

Signed-off-by: Gilad Ben-Yossef <gilad@codefidence.com>
Sigend-off-by: Ori Finkelman <ori@comsleep.com>
Sigend-off-by: Yony Amit <yony@comsleep.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Gilad Ben-Yossef 2009-10-28 04:15:22 +00:00 • committed by David S. Miller
parent f55017a93f
commit 022c3f7d82
7 changed files with 56 additions and 42 deletions
Download patch file Download diff file Expand all files Collapse all files

9
net/ipv4/tcp_input.c
View file

@ -3698,12 +3698,14 @@ old_ack:
* the fast version below fails.
*/
void tcp_parse_options(struct sk_buff *skb, struct tcp_options_received *opt_rx,
int estab)
int estab, struct dst_entry *dst)
{
unsigned char *ptr;
struct tcphdr *th = tcp_hdr(skb);
int length = (th->doff * 4) - sizeof(struct tcphdr);
BUG_ON(!estab && !dst);
ptr = (unsigned char *)(th + 1);
opt_rx->saw_tstamp = 0;
@ -3820,7 +3822,7 @@ static int tcp_fast_parse_options(struct sk_buff *skb, struct tcphdr *th,
if (tcp_parse_aligned_timestamp(tp, th))
return 1;
}
tcp_parse_options(skb, &tp->rx_opt, 1);
tcp_parse_options(skb, &tp->rx_opt, 1, NULL);
return 1;
}
@ -5364,8 +5366,9 @@ static int tcp_rcv_synsent_state_process(struct sock *sk, struct sk_buff *skb,
struct tcp_sock *tp = tcp_sk(sk);
struct inet_connection_sock *icsk = inet_csk(sk);
int saved_clamp = tp->rx_opt.mss_clamp;
struct dst_entry *dst = __sk_dst_get(sk);
tcp_parse_options(skb, &tp->rx_opt, 0);
tcp_parse_options(skb, &tp->rx_opt, 0, dst);
if (th->ack) {
/* rfc793: