1 /*-
2 * Copyright (c) 2010 Isilon Systems, Inc.
3 * Copyright (c) 2010 iX Systems, Inc.
4 * Copyright (c) 2010 Panasas, Inc.
5 * Copyright (c) 2013-2017 Mellanox Technologies, Ltd.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice unmodified, this list of conditions, and the following
13 * disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 *
29 * $FreeBSD$
30 */
31 #ifndef _LINUX_INETDEVICE_H_
32 #define _LINUX_INETDEVICE_H_
33
34 #include <linux/netdevice.h>
35
36 static inline struct net_device *
ip_dev_find(struct vnet * vnet,uint32_t addr)37 ip_dev_find(struct vnet *vnet, uint32_t addr)
38 {
39 struct sockaddr_in sin;
40 struct ifaddr *ifa;
41 struct ifnet *ifp;
42
43 memset(&sin, 0, sizeof(sin));
44 sin.sin_addr.s_addr = addr;
45 sin.sin_len = sizeof(sin);
46 sin.sin_family = AF_INET;
47 NET_EPOCH_ENTER();
48 CURVNET_SET_QUIET(vnet);
49 ifa = ifa_ifwithaddr((struct sockaddr *)&sin);
50 CURVNET_RESTORE();
51 if (ifa) {
52 ifp = ifa->ifa_ifp;
53 if_ref(ifp);
54 } else {
55 ifp = NULL;
56 }
57 NET_EPOCH_EXIT();
58 return (ifp);
59 }
60
61 static inline struct net_device *
ip6_dev_find(struct vnet * vnet,struct in6_addr addr,uint16_t scope_id)62 ip6_dev_find(struct vnet *vnet, struct in6_addr addr, uint16_t scope_id)
63 {
64 struct sockaddr_in6 sin6;
65 struct ifaddr *ifa;
66 struct ifnet *ifp;
67
68 memset(&sin6, 0, sizeof(sin6));
69 sin6.sin6_addr = addr;
70 sin6.sin6_len = sizeof(sin6);
71 sin6.sin6_family = AF_INET6;
72 if (IN6_IS_SCOPE_LINKLOCAL(&addr) ||
73 IN6_IS_ADDR_MC_INTFACELOCAL(&addr)) {
74 /* embed the IPv6 scope ID */
75 sin6.sin6_addr.s6_addr16[1] = htons(scope_id);
76 }
77 NET_EPOCH_ENTER();
78 CURVNET_SET_QUIET(vnet);
79 ifa = ifa_ifwithaddr((struct sockaddr *)&sin6);
80 CURVNET_RESTORE();
81 if (ifa != NULL) {
82 ifp = ifa->ifa_ifp;
83 if_ref(ifp);
84 } else {
85 ifp = NULL;
86 }
87 NET_EPOCH_EXIT();
88 return (ifp);
89 }
90
91 #endif /* _LINUX_INETDEVICE_H_ */
92