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tipc: avoid to asynchronously reset all links

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Postpone the actions of resetting all links until after bclink
lock is released, avoiding to asynchronously reset all links.

Signed-off-by: Ying Xue <ying.xue@windriver.com>
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Reviewed-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ying Xue
2014-05-05 08:56:17 +08:00
committed by David S. Miller
parent eb8b00f5f2
commit 3f5a12bd9f
4 changed files with 32 additions and 14 deletions
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21
net/tipc/bcast.c
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@@ -87,6 +87,7 @@ struct tipc_bcbearer {
* @lock: spinlock governing access to structure
* @link: (non-standard) broadcast link structure
* @node: (non-standard) node structure representing b'cast link's peer node
* @flags: represent bclink states
* @bcast_nodes: map of broadcast-capable nodes
* @retransmit_to: node that most recently requested a retransmit
*
@@ -96,6 +97,7 @@ struct tipc_bclink {
spinlock_t lock;
struct tipc_link link;
struct tipc_node node;
unsigned int flags;
struct tipc_node_map bcast_nodes;
struct tipc_node *retransmit_to;
};
@@ -119,7 +121,26 @@ static void tipc_bclink_lock(void)
static void tipc_bclink_unlock(void)
{
struct tipc_node *node = NULL;
if (likely(!bclink->flags)) {
spin_unlock_bh(&bclink->lock);
return;
}
if (bclink->flags & TIPC_BCLINK_RESET) {
bclink->flags &= ~TIPC_BCLINK_RESET;
node = tipc_bclink_retransmit_to();
}
spin_unlock_bh(&bclink->lock);
if (node)
tipc_link_reset_all(node);
}
void tipc_bclink_set_flags(unsigned int flags)
{
bclink->flags |= flags;
}
static u32 bcbuf_acks(struct sk_buff *buf)