Author: glebius
Date: Thu Oct 27 09:45:12 2011
New Revision: 226830
URL: http://svn.freebsd.org/changeset/base/226830
Log:
Add macro IF_DEQUEUE_ALL(ifq, m), that takes the entire mbuf chain off
the queue. It can be utilized in queue processing to avoid multiple
locking/unlocking.
Modified:
head/sys/net/if_var.h
Modified: head/sys/net/if_var.h
==============================================================================
--- head/sys/net/if_var.h Thu Oct 27 09:43:25 2011 (r226829)
+++ head/sys/net/if_var.h Thu Oct 27 09:45:12 2011 (r226830)
@@ -321,6 +321,18 @@ void if_maddr_runlock(struct ifnet *ifp)
IF_UNLOCK(ifq); \
} while (0)
+#define _IF_DEQUEUE_ALL(ifq, m) do { \
+ (m) = (ifq)->ifq_head; \
+ (ifq)->ifq_head = (ifq)->ifq_tail = NULL; \
+ (ifq)->ifq_len = 0; \
+} while (0)
+
+#define IF_DEQUEUE_ALL(ifq, m) do { \
+ IF_LOCK(ifq); \
+ _IF_DEQUEUE_ALL(ifq, m); \
+ IF_UNLOCK(ifq); \
+} while (0)
+
#define _IF_POLL(ifq, m) ((m) = (ifq)->ifq_head)
#define IF_POLL(ifq, m) _IF_POLL(ifq, m)
_______________________________________________
svn-src-head@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/svn-src-head
To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
