Author: tuexen
Date: Mon Mar 23 23:34:21 2015
New Revision: 280404
URL: https://svnweb.freebsd.org/changeset/base/280404
Log:
When an ICMP message is received and the MTU shrinks, only
mark outstanding chunks for retransmissions.
MFC after: 3 days
Modified:
head/sys/netinet/sctp_usrreq.c
Modified: head/sys/netinet/sctp_usrreq.c
==============================================================================
--- head/sys/netinet/sctp_usrreq.c Mon Mar 23 23:06:32 2015
(r280403)
+++ head/sys/netinet/sctp_usrreq.c Mon Mar 23 23:34:21 2015
(r280404)
@@ -125,21 +125,19 @@ sctp_pathmtu_adjustment(struct sctp_tcb
if (chk->sent < SCTP_DATAGRAM_RESEND) {
sctp_flight_size_decrease(chk);
sctp_total_flight_decrease(stcb, chk);
- }
- if (chk->sent != SCTP_DATAGRAM_RESEND) {
+ chk->sent = SCTP_DATAGRAM_RESEND;
sctp_ucount_incr(stcb->asoc.sent_queue_retran_cnt);
+ chk->rec.data.doing_fast_retransmit = 0;
+ if (SCTP_BASE_SYSCTL(sctp_logging_level) &
SCTP_FLIGHT_LOGGING_ENABLE) {
+
sctp_misc_ints(SCTP_FLIGHT_LOG_DOWN_PMTU,
+ chk->whoTo->flight_size,
+ chk->book_size,
+ (uintptr_t) chk->whoTo,
+ chk->rec.data.TSN_seq);
+ }
+ /* Clear any time so NO RTT is being done */
+ chk->do_rtt = 0;
}
- chk->sent = SCTP_DATAGRAM_RESEND;
- chk->rec.data.doing_fast_retransmit = 0;
- if (SCTP_BASE_SYSCTL(sctp_logging_level) &
SCTP_FLIGHT_LOGGING_ENABLE) {
- sctp_misc_ints(SCTP_FLIGHT_LOG_DOWN_PMTU,
- chk->whoTo->flight_size,
- chk->book_size,
- (uintptr_t) chk->whoTo,
- chk->rec.data.TSN_seq);
- }
- /* Clear any time so NO RTT is being done */
- chk->do_rtt = 0;
}
}
}
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