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[TCP]: MTU probing

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Implementation of packetization layer path mtu discovery for TCP, based on
the internet-draft currently found at
<http://www.ietf.org/internet-drafts/draft-ietf-pmtud-method-05.txt>.

Signed-off-by: John Heffner <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
John Heffner 2006-03-20 17:53:41 -08:00 • committed by David S. Miller
commit 5d424d5a67
9 changed files with 326 additions and 37 deletions
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1
net/ipv6/tcp_ipv6.c
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@ -987,6 +987,7 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
inet_csk(newsk)->icsk_ext_hdr_len = (newnp->opt->opt_nflen +
newnp->opt->opt_flen);
tcp_mtup_init(newsk);
tcp_sync_mss(newsk, dst_mtu(dst));
newtp->advmss = dst_metric(dst, RTAX_ADVMSS);
tcp_initialize_rcv_mss(newsk);