Date: Thu, 5 Jan 2012 18:35:49 +0000 (UTC) From: John Baldwin <jhb@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r229614 - head/sys/net Message-ID: <201201051835.q05IZnpC049132@svn.freebsd.org>
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Author: jhb Date: Thu Jan 5 18:35:49 2012 New Revision: 229614 URL: http://svn.freebsd.org/changeset/base/229614 Log: Add new variants of the IF_ADDR_*LOCK*() macros used for protecting interface address lists that distinguish read locks from write locks. To preserve the KPI, the previous operations are mapped to the write lock macros. The lock is still kept as a mutex for now. Reviewed by: bz MFC after: 2 weeks Modified: head/sys/net/if_var.h Modified: head/sys/net/if_var.h ============================================================================== --- head/sys/net/if_var.h Thu Jan 5 18:32:37 2012 (r229613) +++ head/sys/net/if_var.h Thu Jan 5 18:35:49 2012 (r229614) @@ -249,9 +249,15 @@ typedef void if_init_f_t(void *); #define IF_ADDR_LOCK_INIT(if) mtx_init(&(if)->if_addr_mtx, \ "if_addr_mtx", NULL, MTX_DEF) #define IF_ADDR_LOCK_DESTROY(if) mtx_destroy(&(if)->if_addr_mtx) -#define IF_ADDR_LOCK(if) mtx_lock(&(if)->if_addr_mtx) -#define IF_ADDR_UNLOCK(if) mtx_unlock(&(if)->if_addr_mtx) +#define IF_ADDR_WLOCK(if) mtx_lock(&(if)->if_addr_mtx) +#define IF_ADDR_WUNLOCK(if) mtx_unlock(&(if)->if_addr_mtx) +#define IF_ADDR_RLOCK(if) mtx_lock(&(if)->if_addr_mtx) +#define IF_ADDR_RUNLOCK(if) mtx_unlock(&(if)->if_addr_mtx) #define IF_ADDR_LOCK_ASSERT(if) mtx_assert(&(if)->if_addr_mtx, MA_OWNED) +#define IF_ADDR_WLOCK_ASSERT(if) mtx_assert(&(if)->if_addr_mtx, MA_OWNED) +/* XXX: Compat. */ +#define IF_ADDR_LOCK(if) IF_ADDR_WLOCK(if) +#define IF_ADDR_UNLOCK(if) IF_ADDR_WUNLOCK(if) /* * Function variations on locking macros intended to be used by loadable
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