Date: Fri, 6 Jan 2012 08:46:27 +0000 (UTC) From: Gleb Smirnoff <glebius@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org Subject: svn commit: r229690 - stable/9/sys/net Message-ID: <201201060846.q068kR5q079786@svn.freebsd.org>
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Author: glebius Date: Fri Jan 6 08:46:26 2012 New Revision: 229690 URL: http://svn.freebsd.org/changeset/base/229690 Log: Merge r226830 from head/: 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: stable/9/sys/net/if_var.h Directory Properties: stable/9/sys/ (props changed) Modified: stable/9/sys/net/if_var.h ============================================================================== --- stable/9/sys/net/if_var.h Fri Jan 6 05:51:00 2012 (r229689) +++ stable/9/sys/net/if_var.h Fri Jan 6 08:46:26 2012 (r229690) @@ -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)
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