diff options
| author | glebius <glebius@FreeBSD.org> | 2011-10-27 09:45:12 +0000 |
|---|---|---|
| committer | glebius <glebius@FreeBSD.org> | 2011-10-27 09:45:12 +0000 |
| commit | fb9b0b1cbedce705bd12afd3a921ffdbc1f299fa (patch) | |
| tree | e43f002a8ca7d5ce3761e4833741b8ee9ebd94d9 /sys/net | |
| parent | 73f8c1969fba5d84c113453e480f9b1d095a4a0a (diff) | |
| download | FreeBSD-src-fb9b0b1cbedce705bd12afd3a921ffdbc1f299fa.zip FreeBSD-src-fb9b0b1cbedce705bd12afd3a921ffdbc1f299fa.tar.gz | |
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.
Diffstat (limited to 'sys/net')
| -rw-r--r-- | sys/net/if_var.h | 12 |
1 files changed, 12 insertions, 0 deletions
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) |
