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 */
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 CURVNET_SET_QUIET(vnet);
48 ifa = ifa_ifwithaddr((struct sockaddr *)&sin);
49 CURVNET_RESTORE();
50 if (ifa) {
51 ifp = ifa->ifa_ifp;
52 if_ref(ifp);
53 ifa_free(ifa);
54 } else {
55 ifp = NULL;
56 }
57 return (ifp);
58 }
59
60 static inline struct net_device *
ip6_dev_find(struct vnet * vnet,struct in6_addr addr)61 ip6_dev_find(struct vnet *vnet, struct in6_addr addr)
62 {
63 struct sockaddr_in6 sin6;
64 struct ifaddr *ifa = NULL;
65 struct ifnet *ifp = NULL;
66 int x;
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 CURVNET_SET_QUIET(vnet);
73 if (IN6_IS_SCOPE_LINKLOCAL(&addr) ||
74 IN6_IS_ADDR_MC_INTFACELOCAL(&addr)) {
75 /* XXX need to search all scope ID's */
76 for (x = 0; x <= V_if_index && x < 65536; x++) {
77 sin6.sin6_addr.s6_addr16[1] = htons(x);
78 ifa = ifa_ifwithaddr((struct sockaddr *)&sin6);
79 if (ifa != NULL)
80 break;
81 }
82 } else {
83 ifa = ifa_ifwithaddr((struct sockaddr *)&sin6);
84 }
85 if (ifa != NULL) {
86 ifp = ifa->ifa_ifp;
87 if_ref(ifp);
88 ifa_free(ifa);
89 }
90 CURVNET_RESTORE();
91 return (ifp);
92 }
93
94 #endif /* _LINUX_INETDEVICE_H_ */
95