strparser: Queue work when being unpaused

When the upper layer unpauses a stream parser connection we need to
queue rx_work to make sure no events are missed.

Signed-off-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/net/strparser.h b/include/net/strparser.h
index fdb3d6746cc419c9a878405db731555969e947d8..91fa0b958426dcea5f9394bd67e574ab2c4aabd5 100644 (file)
--- a/include/net/strparser.h
+++ b/include/net/strparser.h
@@ -88,10 +88,7 @@ static inline void strp_pause(struct strparser *strp)
 }
 
 /* May be called without holding lock for attached socket */
-static inline void strp_unpause(struct strparser *strp)
-{
-       strp->rx_paused = 0;
-}
+void strp_unpause(struct strparser *strp);
 
 static inline void save_strp_stats(struct strparser *strp,
                                   struct strp_aggr_stats *agg_stats)

diff --git a/net/strparser/strparser.c b/net/strparser/strparser.c
index 68334b56db1e47a3a1ec8f3f2dc7fa4229f57769..4ecfc10cbe6dea778037c8fc2bd8f5def4c289e9 100644 (file)
--- a/net/strparser/strparser.c
+++ b/net/strparser/strparser.c
@@ -445,6 +445,17 @@ int strp_init(struct strparser *strp, struct sock *csk,
 }
 EXPORT_SYMBOL_GPL(strp_init);
 
+void strp_unpause(struct strparser *strp)
+{
+       strp->rx_paused = 0;
+
+       /* Sync setting rx_paused with RX work */
+       smp_mb();
+
+       queue_work(strp_wq, &strp->rx_work);
+}
+EXPORT_SYMBOL_GPL(strp_unpause);
+
 /* strp must already be stopped so that strp_tcp_recv will no longer be called.
  * Note that strp_done is not called with the lower socket held.
  */