From fb9b0b1cbedce705bd12afd3a921ffdbc1f299fa Mon Sep 17 00:00:00 2001 From: glebius Date: Thu, 27 Oct 2011 09:45:12 +0000 Subject: 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. --- sys/net/if_var.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'sys') diff --git a/sys/net/if_var.h b/sys/net/if_var.h index 2dcb6f9..e06a086 100644 --- a/sys/net/if_var.h +++ b/sys/net/if_var.h @@ -321,6 +321,18 @@ void if_maddr_runlock(struct ifnet *ifp); /* if_multiaddrs */ 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) -- cgit v1.1