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tcp_sack_option: handle the case that the right-most sack'ed block is expanded. 

a fix from Noritoshi Demizu (FreeBSD PR/78226) via Kentaro A. Kurahone.
This commit is contained in:
yamt 2005-03-08 11:27:14 +00:00
parent 34c1c241e2
commit a0f802e2ac
1 changed files with 5 additions and 3 deletions
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8
sys/netinet/tcp_sack.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: tcp_sack.c,v 1.7 2005/03/07 10:27:39 yamt Exp $ */
/* $NetBSD: tcp_sack.c,v 1.8 2005/03/08 11:27:14 yamt Exp $ */
/*
* Copyright (c) 2005 The NetBSD Foundation, Inc.
@ -109,7 +109,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: tcp_sack.c,v 1.7 2005/03/07 10:27:39 yamt Exp $");
__KERNEL_RCSID(0, "$NetBSD: tcp_sack.c,v 1.8 2005/03/08 11:27:14 yamt Exp $");
#include "opt_inet.h"
#include "opt_ipsec.h"
@ -377,10 +377,12 @@ tcp_sack_option(struct tcpcb *tp, struct tcphdr *th, u_char *cp, int optlen)
tmp->start = tp->rcv_lastsack;
tmp->end = sack->left;
tmp->rxmit = tmp->start;
tp->rcv_lastsack = sack->right;
TAILQ_INSERT_TAIL(&tp->snd_holes, tmp, sackhole_q);
cur = tmp;
}
if (SEQ_LT(tp->rcv_lastsack, sack->right)) {
tp->rcv_lastsack = sack->right;
}
}
}