diff options
Diffstat (limited to 'arch/um/drivers/mcast_user.c')
-rw-r--r-- | arch/um/drivers/mcast_user.c | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/arch/um/drivers/mcast_user.c b/arch/um/drivers/mcast_user.c deleted file mode 100644 index ee19e91568a2..000000000000 --- a/arch/um/drivers/mcast_user.c +++ /dev/null | |||
@@ -1,165 +0,0 @@ | |||
1 | /* | ||
2 | * user-mode-linux networking multicast transport | ||
3 | * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) | ||
4 | * Copyright (C) 2001 by Harald Welte <laforge@gnumonks.org> | ||
5 | * | ||
6 | * based on the existing uml-networking code, which is | ||
7 | * Copyright (C) 2001 Lennert Buytenhek (buytenh@gnu.org) and | ||
8 | * James Leu (jleu@mindspring.net). | ||
9 | * Copyright (C) 2001 by various other people who didn't put their name here. | ||
10 | * | ||
11 | * Licensed under the GPL. | ||
12 | * | ||
13 | */ | ||
14 | |||
15 | #include <unistd.h> | ||
16 | #include <errno.h> | ||
17 | #include <netinet/in.h> | ||
18 | #include "kern_constants.h" | ||
19 | #include "mcast.h" | ||
20 | #include "net_user.h" | ||
21 | #include "um_malloc.h" | ||
22 | #include "user.h" | ||
23 | |||
24 | static struct sockaddr_in *new_addr(char *addr, unsigned short port) | ||
25 | { | ||
26 | struct sockaddr_in *sin; | ||
27 | |||
28 | sin = uml_kmalloc(sizeof(struct sockaddr_in), UM_GFP_KERNEL); | ||
29 | if (sin == NULL) { | ||
30 | printk(UM_KERN_ERR "new_addr: allocation of sockaddr_in " | ||
31 | "failed\n"); | ||
32 | return NULL; | ||
33 | } | ||
34 | sin->sin_family = AF_INET; | ||
35 | sin->sin_addr.s_addr = in_aton(addr); | ||
36 | sin->sin_port = htons(port); | ||
37 | return sin; | ||
38 | } | ||
39 | |||
40 | static int mcast_user_init(void *data, void *dev) | ||
41 | { | ||
42 | struct mcast_data *pri = data; | ||
43 | |||
44 | pri->mcast_addr = new_addr(pri->addr, pri->port); | ||
45 | pri->dev = dev; | ||
46 | return 0; | ||
47 | } | ||
48 | |||
49 | static void mcast_remove(void *data) | ||
50 | { | ||
51 | struct mcast_data *pri = data; | ||
52 | |||
53 | kfree(pri->mcast_addr); | ||
54 | pri->mcast_addr = NULL; | ||
55 | } | ||
56 | |||
57 | static int mcast_open(void *data) | ||
58 | { | ||
59 | struct mcast_data *pri = data; | ||
60 | struct sockaddr_in *sin = pri->mcast_addr; | ||
61 | struct ip_mreq mreq; | ||
62 | int fd, yes = 1, err = -EINVAL; | ||
63 | |||
64 | |||
65 | if ((sin->sin_addr.s_addr == 0) || (sin->sin_port == 0)) | ||
66 | goto out; | ||
67 | |||
68 | fd = socket(AF_INET, SOCK_DGRAM, 0); | ||
69 | |||
70 | if (fd < 0) { | ||
71 | err = -errno; | ||
72 | printk(UM_KERN_ERR "mcast_open : data socket failed, " | ||
73 | "errno = %d\n", errno); | ||
74 | goto out; | ||
75 | } | ||
76 | |||
77 | if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(yes)) < 0) { | ||
78 | err = -errno; | ||
79 | printk(UM_KERN_ERR "mcast_open: SO_REUSEADDR failed, " | ||
80 | "errno = %d\n", errno); | ||
81 | goto out_close; | ||
82 | } | ||
83 | |||
84 | /* set ttl according to config */ | ||
85 | if (setsockopt(fd, SOL_IP, IP_MULTICAST_TTL, &pri->ttl, | ||
86 | sizeof(pri->ttl)) < 0) { | ||
87 | err = -errno; | ||
88 | printk(UM_KERN_ERR "mcast_open: IP_MULTICAST_TTL failed, " | ||
89 | "error = %d\n", errno); | ||
90 | goto out_close; | ||
91 | } | ||
92 | |||
93 | /* set LOOP, so data does get fed back to local sockets */ | ||
94 | if (setsockopt(fd, SOL_IP, IP_MULTICAST_LOOP, &yes, sizeof(yes)) < 0) { | ||
95 | err = -errno; | ||
96 | printk(UM_KERN_ERR "mcast_open: IP_MULTICAST_LOOP failed, " | ||
97 | "error = %d\n", errno); | ||
98 | goto out_close; | ||
99 | } | ||
100 | |||
101 | /* bind socket to mcast address */ | ||
102 | if (bind(fd, (struct sockaddr *) sin, sizeof(*sin)) < 0) { | ||
103 | err = -errno; | ||
104 | printk(UM_KERN_ERR "mcast_open : data bind failed, " | ||
105 | "errno = %d\n", errno); | ||
106 | goto out_close; | ||
107 | } | ||
108 | |||
109 | /* subscribe to the multicast group */ | ||
110 | mreq.imr_multiaddr.s_addr = sin->sin_addr.s_addr; | ||
111 | mreq.imr_interface.s_addr = 0; | ||
112 | if (setsockopt(fd, SOL_IP, IP_ADD_MEMBERSHIP, | ||
113 | &mreq, sizeof(mreq)) < 0) { | ||
114 | err = -errno; | ||
115 | printk(UM_KERN_ERR "mcast_open: IP_ADD_MEMBERSHIP failed, " | ||
116 | "error = %d\n", errno); | ||
117 | printk(UM_KERN_ERR "There appears not to be a multicast-" | ||
118 | "capable network interface on the host.\n"); | ||
119 | printk(UM_KERN_ERR "eth0 should be configured in order to use " | ||
120 | "the multicast transport.\n"); | ||
121 | goto out_close; | ||
122 | } | ||
123 | |||
124 | return fd; | ||
125 | |||
126 | out_close: | ||
127 | close(fd); | ||
128 | out: | ||
129 | return err; | ||
130 | } | ||
131 | |||
132 | static void mcast_close(int fd, void *data) | ||
133 | { | ||
134 | struct ip_mreq mreq; | ||
135 | struct mcast_data *pri = data; | ||
136 | struct sockaddr_in *sin = pri->mcast_addr; | ||
137 | |||
138 | mreq.imr_multiaddr.s_addr = sin->sin_addr.s_addr; | ||
139 | mreq.imr_interface.s_addr = 0; | ||
140 | if (setsockopt(fd, SOL_IP, IP_DROP_MEMBERSHIP, | ||
141 | &mreq, sizeof(mreq)) < 0) { | ||
142 | printk(UM_KERN_ERR "mcast_open: IP_DROP_MEMBERSHIP failed, " | ||
143 | "error = %d\n", errno); | ||
144 | } | ||
145 | |||
146 | close(fd); | ||
147 | } | ||
148 | |||
149 | int mcast_user_write(int fd, void *buf, int len, struct mcast_data *pri) | ||
150 | { | ||
151 | struct sockaddr_in *data_addr = pri->mcast_addr; | ||
152 | |||
153 | return net_sendto(fd, buf, len, data_addr, sizeof(*data_addr)); | ||
154 | } | ||
155 | |||
156 | const struct net_user_info mcast_user_info = { | ||
157 | .init = mcast_user_init, | ||
158 | .open = mcast_open, | ||
159 | .close = mcast_close, | ||
160 | .remove = mcast_remove, | ||
161 | .add_address = NULL, | ||
162 | .delete_address = NULL, | ||
163 | .mtu = ETH_MAX_PACKET, | ||
164 | .max_packet = ETH_MAX_PACKET + ETH_HEADER_OTHER, | ||
165 | }; | ||