This source file includes following definitions.
- loopback_xmit
- loopback_init
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18 #include <asm/system.h>
19 #include <asm/segment.h>
20 #include <asm/io.h>
21 #include <linux/config.h>
22 #include <linux/kernel.h>
23 #include <linux/sched.h>
24 #include <linux/fs.h>
25 #include <linux/tty.h>
26 #include <linux/types.h>
27 #include <linux/ptrace.h>
28 #include <linux/string.h>
29 #include <linux/socket.h>
30 #include <linux/errno.h>
31 #include <linux/fcntl.h>
32 #include <linux/in.h>
33 #include "inet.h"
34 #include "dev.h"
35 #include "eth.h"
36 #include "timer.h"
37 #include "ip.h"
38 #include "protocol.h"
39 #include "tcp.h"
40 #include "skbuff.h"
41 #include "sock.h"
42 #include "arp.h"
43
44
45 static int
46 loopback_xmit(struct sk_buff *skb, struct device *dev)
47 {
48 int done;
49
50 DPRINTF((DBG_LOOPB, "loopback_xmit(dev=%X, skb=%X)\n", dev, skb));
51 if (skb == NULL || dev == NULL) return(0);
52
53 cli();
54 if (dev->tbusy != 0) {
55 sti();
56 return(1);
57 }
58 dev->tbusy = 1;
59 sti();
60
61 done = dev_rint((unsigned char *)(skb+1), skb->len, 0, dev);
62 if (skb->free) kfree_skb(skb, FREE_WRITE);
63
64 while (done != 1) {
65 done = dev_rint(NULL, 0, 0, dev);
66 }
67 dev->tbusy = 0;
68
69 return(0);
70 }
71
72
73
74 int
75 loopback_init(struct device *dev)
76 {
77 dev->mtu = 2000;
78 dev->tbusy = 0;
79 dev->hard_start_xmit = loopback_xmit;
80 dev->open = NULL;
81 #if 1
82 dev->hard_header = eth_header;
83 dev->add_arp = NULL;
84 dev->hard_header_len = ETH_HLEN;
85 dev->addr_len = ETH_ALEN;
86 dev->type = ARPHRD_ETHER;
87 dev->type_trans = eth_type_trans;
88 dev->rebuild_header = eth_rebuild_header;
89 #else
90 dev->hard_header_length = 0;
91 dev->add_arp = NULL;
92 dev->addr_len = 0;
93 dev->type = 0;
94 dev->hard_header = NULL;
95 dev->type_trans = NULL;
96 dev->rebuild_header = NULL;
97 #endif
98 dev->queue_xmit = dev_queue_xmit;
99
100
101 dev->flags = IFF_LOOPBACK;
102 dev->family = AF_INET;
103 dev->pa_addr = in_aton("127.0.0.1");
104 dev->pa_brdaddr = in_aton("127.255.255.255");
105 dev->pa_mask = in_aton("255.0.0.0");
106 dev->pa_alen = sizeof(unsigned long);
107
108 return(0);
109 };