Date: Thu, 27 Oct 2011 09:45:13 +0000 (UTC) From: Gleb Smirnoff <glebius@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r226830 - head/sys/net Message-ID: <201110270945.p9R9jDrk095115@svn.freebsd.org>
next in thread | raw e-mail | index | archive | help
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)
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201110270945.p9R9jDrk095115>