svn commit: r212897 - head/sys/netinet

[Michael Tuexen]

Author: tuexen
Date: Mon Sep 20 12:19:11 2010
New Revision: 212897
URL: http://svn.freebsd.org/changeset/base/212897

Log:
  Fix a locking issue which resulted in aborted associations
  due to a corrupted nr-mapping array.
  
  MFC after: 2 weeks.

Modified:
  head/sys/netinet/sctp_indata.c

Modified: head/sys/netinet/sctp_indata.c
==============================================================================
--- head/sys/netinet/sctp_indata.c	Mon Sep 20 11:53:57 2010	(r212896)
+++ head/sys/netinet/sctp_indata.c	Mon Sep 20 12:19:11 2010	(r212897)
@@ -1776,6 +1776,10 @@ sctp_process_a_data_chunk(struct sctp_tc
 		if (control == NULL) {
 			goto failed_express_del;
 		}
+		SCTP_SET_TSN_PRESENT(asoc->nr_mapping_array, gap);
+		if (compare_with_wrap(tsn, asoc->highest_tsn_inside_nr_map, MAX_TSN)) {
+			asoc->highest_tsn_inside_nr_map = tsn;
+		}
 		sctp_add_to_readq(stcb->sctp_ep, stcb,
 		    control, &stcb->sctp_socket->so_rcv,
 		    1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
@@ -1791,10 +1795,6 @@ sctp_process_a_data_chunk(struct sctp_tc
 		}
 		control = NULL;
 
-		SCTP_SET_TSN_PRESENT(asoc->nr_mapping_array, gap);
-		if (compare_with_wrap(tsn, asoc->highest_tsn_inside_nr_map, MAX_TSN)) {
-			asoc->highest_tsn_inside_nr_map = tsn;
-		}
 		goto finish_express_del;
 	}
 failed_express_del: