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Message-Id: <1328575968-20643-7-git-send-email-paul.gortmaker@windriver.com> Date: Mon, 6 Feb 2012 19:52:39 -0500 From: Paul Gortmaker <paul.gortmaker@...driver.com> To: davem@...emloft.net Cc: netdev@...r.kernel.org, allan.stephens@...driver.com, ying.xue@...driver.com, Paul Gortmaker <paul.gortmaker@...driver.com> Subject: [PATCH net-next 06/15] tipc: Add missing broadcast link lock when sending NACK From: Allan Stephens <allan.stephens@...driver.com> 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: Allan Stephens <allan.stephens@...driver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@...driver.com> --- net/tipc/bcast.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/net/tipc/bcast.c b/net/tipc/bcast.c index 8eb87b1..7342abc 100644 --- a/net/tipc/bcast.c +++ b/net/tipc/bcast.c @@ -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); /* -- 1.7.9 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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