diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /net/rose/rose_dev.c |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'net/rose/rose_dev.c')
-rw-r--r-- | net/rose/rose_dev.c | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/net/rose/rose_dev.c b/net/rose/rose_dev.c new file mode 100644 index 000000000000..a8ed9a1d09f9 --- /dev/null +++ b/net/rose/rose_dev.c | |||
@@ -0,0 +1,154 @@ | |||
1 | /* | ||
2 | * This program is free software; you can redistribute it and/or modify | ||
3 | * it under the terms of the GNU General Public License as published by | ||
4 | * the Free Software Foundation; either version 2 of the License, or | ||
5 | * (at your option) any later version. | ||
6 | * | ||
7 | * Copyright (C) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk) | ||
8 | */ | ||
9 | #include <linux/config.h> | ||
10 | #include <linux/module.h> | ||
11 | #include <linux/proc_fs.h> | ||
12 | #include <linux/kernel.h> | ||
13 | #include <linux/sched.h> | ||
14 | #include <linux/interrupt.h> | ||
15 | #include <linux/fs.h> | ||
16 | #include <linux/types.h> | ||
17 | #include <linux/sysctl.h> | ||
18 | #include <linux/string.h> | ||
19 | #include <linux/socket.h> | ||
20 | #include <linux/errno.h> | ||
21 | #include <linux/fcntl.h> | ||
22 | #include <linux/in.h> | ||
23 | #include <linux/if_ether.h> | ||
24 | |||
25 | #include <asm/system.h> | ||
26 | #include <asm/io.h> | ||
27 | |||
28 | #include <linux/inet.h> | ||
29 | #include <linux/netdevice.h> | ||
30 | #include <linux/etherdevice.h> | ||
31 | #include <linux/if_arp.h> | ||
32 | #include <linux/skbuff.h> | ||
33 | |||
34 | #include <net/ip.h> | ||
35 | #include <net/arp.h> | ||
36 | |||
37 | #include <net/ax25.h> | ||
38 | #include <net/rose.h> | ||
39 | |||
40 | static int rose_header(struct sk_buff *skb, struct net_device *dev, unsigned short type, | ||
41 | void *daddr, void *saddr, unsigned len) | ||
42 | { | ||
43 | unsigned char *buff = skb_push(skb, ROSE_MIN_LEN + 2); | ||
44 | |||
45 | *buff++ = ROSE_GFI | ROSE_Q_BIT; | ||
46 | *buff++ = 0x00; | ||
47 | *buff++ = ROSE_DATA; | ||
48 | *buff++ = 0x7F; | ||
49 | *buff++ = AX25_P_IP; | ||
50 | |||
51 | if (daddr != NULL) | ||
52 | return 37; | ||
53 | |||
54 | return -37; | ||
55 | } | ||
56 | |||
57 | static int rose_rebuild_header(struct sk_buff *skb) | ||
58 | { | ||
59 | struct net_device *dev = skb->dev; | ||
60 | struct net_device_stats *stats = netdev_priv(dev); | ||
61 | unsigned char *bp = (unsigned char *)skb->data; | ||
62 | struct sk_buff *skbn; | ||
63 | |||
64 | #ifdef CONFIG_INET | ||
65 | if (arp_find(bp + 7, skb)) { | ||
66 | return 1; | ||
67 | } | ||
68 | |||
69 | if ((skbn = skb_clone(skb, GFP_ATOMIC)) == NULL) { | ||
70 | kfree_skb(skb); | ||
71 | return 1; | ||
72 | } | ||
73 | |||
74 | if (skb->sk != NULL) | ||
75 | skb_set_owner_w(skbn, skb->sk); | ||
76 | |||
77 | kfree_skb(skb); | ||
78 | |||
79 | if (!rose_route_frame(skbn, NULL)) { | ||
80 | kfree_skb(skbn); | ||
81 | stats->tx_errors++; | ||
82 | return 1; | ||
83 | } | ||
84 | |||
85 | stats->tx_packets++; | ||
86 | stats->tx_bytes += skbn->len; | ||
87 | #endif | ||
88 | return 1; | ||
89 | } | ||
90 | |||
91 | static int rose_set_mac_address(struct net_device *dev, void *addr) | ||
92 | { | ||
93 | struct sockaddr *sa = addr; | ||
94 | |||
95 | rose_del_loopback_node((rose_address *)dev->dev_addr); | ||
96 | |||
97 | memcpy(dev->dev_addr, sa->sa_data, dev->addr_len); | ||
98 | |||
99 | rose_add_loopback_node((rose_address *)dev->dev_addr); | ||
100 | |||
101 | return 0; | ||
102 | } | ||
103 | |||
104 | static int rose_open(struct net_device *dev) | ||
105 | { | ||
106 | netif_start_queue(dev); | ||
107 | rose_add_loopback_node((rose_address *)dev->dev_addr); | ||
108 | return 0; | ||
109 | } | ||
110 | |||
111 | static int rose_close(struct net_device *dev) | ||
112 | { | ||
113 | netif_stop_queue(dev); | ||
114 | rose_del_loopback_node((rose_address *)dev->dev_addr); | ||
115 | return 0; | ||
116 | } | ||
117 | |||
118 | static int rose_xmit(struct sk_buff *skb, struct net_device *dev) | ||
119 | { | ||
120 | struct net_device_stats *stats = netdev_priv(dev); | ||
121 | |||
122 | if (!netif_running(dev)) { | ||
123 | printk(KERN_ERR "ROSE: rose_xmit - called when iface is down\n"); | ||
124 | return 1; | ||
125 | } | ||
126 | dev_kfree_skb(skb); | ||
127 | stats->tx_errors++; | ||
128 | return 0; | ||
129 | } | ||
130 | |||
131 | static struct net_device_stats *rose_get_stats(struct net_device *dev) | ||
132 | { | ||
133 | return netdev_priv(dev); | ||
134 | } | ||
135 | |||
136 | void rose_setup(struct net_device *dev) | ||
137 | { | ||
138 | SET_MODULE_OWNER(dev); | ||
139 | dev->mtu = ROSE_MAX_PACKET_SIZE - 2; | ||
140 | dev->hard_start_xmit = rose_xmit; | ||
141 | dev->open = rose_open; | ||
142 | dev->stop = rose_close; | ||
143 | |||
144 | dev->hard_header = rose_header; | ||
145 | dev->hard_header_len = AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN; | ||
146 | dev->addr_len = ROSE_ADDR_LEN; | ||
147 | dev->type = ARPHRD_ROSE; | ||
148 | dev->rebuild_header = rose_rebuild_header; | ||
149 | dev->set_mac_address = rose_set_mac_address; | ||
150 | |||
151 | /* New-style flags. */ | ||
152 | dev->flags = 0; | ||
153 | dev->get_stats = rose_get_stats; | ||
154 | } | ||