2 * Copyright (c) 2007-2012 Nicira Networks.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of version 2 of the GNU General Public
6 * License as published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
22 #include <linux/netlink.h>
24 #ifndef HAVE_NLA_NUL_STRING
25 static inline int CHECK_NUL_STRING(struct nlattr *attr, int maxlen)
37 if (s[len - 1] != '\0')
43 static inline int CHECK_NUL_STRING(struct nlattr *attr, int maxlen)
47 #endif /* !HAVE_NLA_NUL_STRING */
49 static inline void skb_clear_rxhash(struct sk_buff *skb)
51 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)
57 * Enforces, mutual exclusion with the Linux bridge module, by declaring and
58 * exporting br_should_route_hook. Because the bridge module also exports the
59 * same symbol, the module loader will refuse to load both modules at the same
60 * time (e.g. "bridge: exports duplicate symbol br_should_route_hook (owned by
63 * Before Linux 2.6.36, Open vSwitch cannot safely coexist with the Linux
64 * bridge module, so openvswitch uses this macro in those versions. In
65 * Linux 2.6.36 and later, Open vSwitch can coexist with the bridge module,
66 * but it makes no sense to load both bridge and brcompat, so brcompat uses
67 * this macro in those versions.
69 * The use of "typeof" here avoids the need to track changes in the type of
70 * br_should_route_hook over various kernel versions.
72 #define BRIDGE_MUTUAL_EXCLUSION \
73 typeof(br_should_route_hook) br_should_route_hook; \
74 EXPORT_SYMBOL(br_should_route_hook)
76 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,32)
77 #define GENL_SOCK(net) (genl_sock)
80 #define GENL_SOCK(net) ((net)->genl_sock)
81 #define SET_NETNSOK .netnsok = true,