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Commit 57732560 authored by Allan Stephens's avatar Allan Stephens Committed by Paul Gortmaker
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tipc: Add missing broadcast link lock when sending NACK 



Ensures that any attempt to send a NACK message over TIPC's broadcast
link has exclusive access to the link's main data structures, to prevent
interference with a simultaneous attempt to send other broadcast link
traffic (such as application-generated multicast messages).

Signed-off-by: default avatarAllan Stephens <allan.stephens@windriver.com>
Signed-off-by: default avatarPaul Gortmaker <paul.gortmaker@windriver.com>
parent 47361c87

net/tipc/bcast.c

+2 −0
Original line number Diff line number Diff line
@@ -340,8 +340,10 @@ static void bclink_send_nack(struct tipc_node *n_ptr) 
		msg_set_bcgap_to(msg, n_ptr->bclink.gap_to);

		msg_set_bcast_tag(msg, tipc_own_tag);



		spin_lock_bh(&bc_lock);

		tipc_bearer_send(&bcbearer->bearer, buf, NULL);

		bcl->stats.sent_nacks++;

		spin_unlock_bh(&bc_lock);

		buf_discard(buf);



		/*