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Date:      Sat, 29 Apr 2017 09:57:27 +0000 (UTC)
From:      Michael Tuexen <tuexen@FreeBSD.org>
To:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org
Subject:   svn commit: r317592 - head/sys/netinet
Message-ID:  <201704290957.v3T9vRNi080127@repo.freebsd.org>
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Author: tuexen
Date: Sat Apr 29 09:57:27 2017
New Revision: 317592
URL: https://svnweb.freebsd.org/changeset/base/317592

Log:
  Don't set the DF-bit on timer based retransmissions.
  
  MFC after:	1 week

Modified:
  head/sys/netinet/sctp_timer.c

Modified: head/sys/netinet/sctp_timer.c
==============================================================================
--- head/sys/netinet/sctp_timer.c	Sat Apr 29 09:47:15 2017	(r317591)
+++ head/sys/netinet/sctp_timer.c	Sat Apr 29 09:57:27 2017	(r317592)
@@ -667,6 +667,7 @@ start_again:
 				stcb->asoc.peers_rwnd += SCTP_BASE_SYSCTL(sctp_peer_chunk_oh);
 			}
 			chk->sent = SCTP_DATAGRAM_RESEND;
+			chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
 			SCTP_STAT_INCR(sctps_markedretrans);
 
 			/* reset the TSN for striking and other FR stuff */
@@ -740,6 +741,7 @@ start_again:
 			chk->whoTo = alt;
 			if (chk->sent != SCTP_DATAGRAM_RESEND) {
 				chk->sent = SCTP_DATAGRAM_RESEND;
+				chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
 				sctp_ucount_incr(stcb->asoc.sent_queue_retran_cnt);
 				cnt_mk++;
 			}
@@ -1084,6 +1086,7 @@ sctp_cookie_timer(struct sctp_inpcb *inp
 		sctp_ucount_incr(stcb->asoc.sent_queue_retran_cnt);
 	}
 	cookie->sent = SCTP_DATAGRAM_RESEND;
+	cookie->flags |= CHUNK_FLAGS_FRAGMENT_OK;
 	/*
 	 * Now call the output routine to kick out the cookie again, Note we
 	 * don't mark any chunks for retran so that FR will need to kick in
@@ -1130,6 +1133,7 @@ sctp_strreset_timer(struct sctp_inpcb *i
 			sctp_free_remote_addr(chk->whoTo);
 			if (chk->sent != SCTP_DATAGRAM_RESEND) {
 				chk->sent = SCTP_DATAGRAM_RESEND;
+				chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
 				sctp_ucount_incr(stcb->asoc.sent_queue_retran_cnt);
 			}
 			chk->whoTo = alt;
@@ -1147,6 +1151,7 @@ sctp_strreset_timer(struct sctp_inpcb *i
 	if (strrst->sent != SCTP_DATAGRAM_RESEND)
 		sctp_ucount_incr(stcb->asoc.sent_queue_retran_cnt);
 	strrst->sent = SCTP_DATAGRAM_RESEND;
+	strrst->flags |= CHUNK_FLAGS_FRAGMENT_OK;
 
 	/* restart the timer */
 	sctp_timer_start(SCTP_TIMER_TYPE_STRRESET, inp, stcb, strrst->whoTo);
@@ -1211,6 +1216,7 @@ sctp_asconf_timer(struct sctp_inpcb *inp
 				chk->whoTo = alt;
 				if (chk->sent != SCTP_DATAGRAM_RESEND) {
 					chk->sent = SCTP_DATAGRAM_RESEND;
+					chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
 					sctp_ucount_incr(stcb->asoc.sent_queue_retran_cnt);
 				}
 				atomic_add_int(&alt->ref_count, 1);
@@ -1225,6 +1231,7 @@ sctp_asconf_timer(struct sctp_inpcb *inp
 			if (asconf->sent != SCTP_DATAGRAM_RESEND && chk->sent != SCTP_DATAGRAM_UNSENT)
 				sctp_ucount_incr(stcb->asoc.sent_queue_retran_cnt);
 			chk->sent = SCTP_DATAGRAM_RESEND;
+			chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
 		}
 		if (!(net->dest_state & SCTP_ADDR_REACHABLE)) {
 			/*
@@ -1237,6 +1244,7 @@ sctp_asconf_timer(struct sctp_inpcb *inp
 		if (asconf->sent != SCTP_DATAGRAM_RESEND)
 			sctp_ucount_incr(stcb->asoc.sent_queue_retran_cnt);
 		asconf->sent = SCTP_DATAGRAM_RESEND;
+		asconf->flags |= CHUNK_FLAGS_FRAGMENT_OK;
 
 		/* send another ASCONF if any and we can do */
 		sctp_send_asconf(stcb, alt, SCTP_ADDR_NOT_LOCKED);

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