Date: Thu, 6 May 2010 09:54:01 +0000 (UTC) From: Marko Zec <zec@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org Subject: svn commit: r207698 - stable/8/sys/netgraph Message-ID: <201005060954.o469s1RH034685@svn.freebsd.org>
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Author: zec Date: Thu May 6 09:54:01 2010 New Revision: 207698 URL: http://svn.freebsd.org/changeset/base/207698 Log: MFC r207572: When destroying a vnet, shut down all netgraph nodes tied to that vnet before proceeding with dismantling other protocol domains. This change only affects options VIMAGE builds. Reviewed by: julian, bz Modified: stable/8/sys/netgraph/ng_base.c Directory Properties: stable/8/sys/ (props changed) stable/8/sys/amd64/include/xen/ (props changed) stable/8/sys/cddl/contrib/opensolaris/ (props changed) stable/8/sys/contrib/dev/acpica/ (props changed) stable/8/sys/contrib/pf/ (props changed) stable/8/sys/dev/xen/xenpci/ (props changed) stable/8/sys/geom/sched/ (props changed) Modified: stable/8/sys/netgraph/ng_base.c ============================================================================== --- stable/8/sys/netgraph/ng_base.c Thu May 6 09:52:32 2010 (r207697) +++ stable/8/sys/netgraph/ng_base.c Thu May 6 09:54:01 2010 (r207698) @@ -3067,28 +3067,42 @@ ng_mod_event(module_t mod, int event, vo static void vnet_netgraph_uninit(const void *unused __unused) { -#if 0 - node_p node, last_killed = NULL; + node_p node = NULL, last_killed = NULL; + int i; + + do { + /* Find a node to kill */ + mtx_lock(&ng_namehash_mtx); + for (i = 0; i < NG_NAME_HASH_SIZE; i++) { + LIST_FOREACH(node, &V_ng_name_hash[i], nd_nodes) { + if (node != &ng_deadnode) { + NG_NODE_REF(node); + break; + } + } + if (node != NULL) + break; + } + mtx_unlock(&ng_namehash_mtx); - /* XXXRW: utterly bogus. */ - while ((node = LIST_FIRST(&V_ng_allnodes)) != NULL) { - if (node == last_killed) { - /* This should never happen */ - node->nd_flags |= NGF_REALLY_DIE; - printf("netgraph node %s needs NGF_REALLY_DIE\n", - node->nd_name); + /* Attempt to kill it only if it is a regular node */ + if (node != NULL) { + if (node == last_killed) { + /* This should never happen */ + printf("ng node %s needs" + "NGF_REALLY_DIE\n", node->nd_name); + if (node->nd_flags & NGF_REALLY_DIE) + panic("ng node %s won't die", + node->nd_name); + node->nd_flags |= NGF_REALLY_DIE; + } ng_rmnode(node, NULL, NULL, 0); - /* This must never happen */ - if (node == LIST_FIRST(&V_ng_allnodes)) - panic("netgraph node %s won't die", - node->nd_name); + NG_NODE_UNREF(node); + last_killed = node; } - ng_rmnode(node, NULL, NULL, 0); - last_killed = node; - } -#endif + } while (node != NULL); } -VNET_SYSUNINIT(vnet_netgraph_uninit, SI_SUB_NETGRAPH, SI_ORDER_ANY, +VNET_SYSUNINIT(vnet_netgraph_uninit, SI_SUB_PROTO_IFATTACHDOMAIN, SI_ORDER_ANY, vnet_netgraph_uninit, NULL); #endif /* VIMAGE */
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