Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* net/atm/pvc.c - ATM PVC sockets */ |
2 | ||
3 | /* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */ | |
4 | ||
5 | ||
6 | #include <linux/config.h> | |
7 | #include <linux/net.h> /* struct socket, struct proto_ops */ | |
8 | #include <linux/atm.h> /* ATM stuff */ | |
9 | #include <linux/atmdev.h> /* ATM devices */ | |
10 | #include <linux/errno.h> /* error codes */ | |
11 | #include <linux/kernel.h> /* printk */ | |
12 | #include <linux/init.h> | |
13 | #include <linux/skbuff.h> | |
14 | #include <linux/bitops.h> | |
15 | #include <net/sock.h> /* for sock_no_* */ | |
16 | ||
17 | #include "resources.h" /* devs and vccs */ | |
18 | #include "common.h" /* common for PVCs and SVCs */ | |
19 | ||
20 | ||
21 | static int pvc_shutdown(struct socket *sock,int how) | |
22 | { | |
23 | return 0; | |
24 | } | |
25 | ||
26 | ||
27 | static int pvc_bind(struct socket *sock,struct sockaddr *sockaddr, | |
28 | int sockaddr_len) | |
29 | { | |
30 | struct sock *sk = sock->sk; | |
31 | struct sockaddr_atmpvc *addr; | |
32 | struct atm_vcc *vcc; | |
33 | int error; | |
34 | ||
35 | if (sockaddr_len != sizeof(struct sockaddr_atmpvc)) return -EINVAL; | |
36 | addr = (struct sockaddr_atmpvc *) sockaddr; | |
37 | if (addr->sap_family != AF_ATMPVC) return -EAFNOSUPPORT; | |
38 | lock_sock(sk); | |
39 | vcc = ATM_SD(sock); | |
40 | if (!test_bit(ATM_VF_HASQOS, &vcc->flags)) { | |
41 | error = -EBADFD; | |
42 | goto out; | |
43 | } | |
44 | if (test_bit(ATM_VF_PARTIAL,&vcc->flags)) { | |
45 | if (vcc->vpi != ATM_VPI_UNSPEC) addr->sap_addr.vpi = vcc->vpi; | |
46 | if (vcc->vci != ATM_VCI_UNSPEC) addr->sap_addr.vci = vcc->vci; | |
47 | } | |
48 | error = vcc_connect(sock, addr->sap_addr.itf, addr->sap_addr.vpi, | |
49 | addr->sap_addr.vci); | |
50 | out: | |
51 | release_sock(sk); | |
52 | return error; | |
53 | } | |
54 | ||
55 | ||
56 | static int pvc_connect(struct socket *sock,struct sockaddr *sockaddr, | |
57 | int sockaddr_len,int flags) | |
58 | { | |
59 | return pvc_bind(sock,sockaddr,sockaddr_len); | |
60 | } | |
61 | ||
62 | static int pvc_setsockopt(struct socket *sock, int level, int optname, | |
63 | char __user *optval, int optlen) | |
64 | { | |
65 | struct sock *sk = sock->sk; | |
66 | int error; | |
67 | ||
68 | lock_sock(sk); | |
69 | error = vcc_setsockopt(sock, level, optname, optval, optlen); | |
70 | release_sock(sk); | |
71 | return error; | |
72 | } | |
73 | ||
74 | ||
75 | static int pvc_getsockopt(struct socket *sock, int level, int optname, | |
76 | char __user *optval, int __user *optlen) | |
77 | { | |
78 | struct sock *sk = sock->sk; | |
79 | int error; | |
80 | ||
81 | lock_sock(sk); | |
82 | error = vcc_getsockopt(sock, level, optname, optval, optlen); | |
83 | release_sock(sk); | |
84 | return error; | |
85 | } | |
86 | ||
87 | ||
88 | static int pvc_getname(struct socket *sock,struct sockaddr *sockaddr, | |
89 | int *sockaddr_len,int peer) | |
90 | { | |
91 | struct sockaddr_atmpvc *addr; | |
92 | struct atm_vcc *vcc = ATM_SD(sock); | |
93 | ||
94 | if (!vcc->dev || !test_bit(ATM_VF_ADDR,&vcc->flags)) return -ENOTCONN; | |
95 | *sockaddr_len = sizeof(struct sockaddr_atmpvc); | |
96 | addr = (struct sockaddr_atmpvc *) sockaddr; | |
97 | addr->sap_family = AF_ATMPVC; | |
98 | addr->sap_addr.itf = vcc->dev->number; | |
99 | addr->sap_addr.vpi = vcc->vpi; | |
100 | addr->sap_addr.vci = vcc->vci; | |
101 | return 0; | |
102 | } | |
103 | ||
104 | ||
105 | static struct proto_ops pvc_proto_ops = { | |
106 | .family = PF_ATMPVC, | |
107 | .owner = THIS_MODULE, | |
108 | ||
109 | .release = vcc_release, | |
110 | .bind = pvc_bind, | |
111 | .connect = pvc_connect, | |
112 | .socketpair = sock_no_socketpair, | |
113 | .accept = sock_no_accept, | |
114 | .getname = pvc_getname, | |
115 | .poll = vcc_poll, | |
116 | .ioctl = vcc_ioctl, | |
117 | .listen = sock_no_listen, | |
118 | .shutdown = pvc_shutdown, | |
119 | .setsockopt = pvc_setsockopt, | |
120 | .getsockopt = pvc_getsockopt, | |
121 | .sendmsg = vcc_sendmsg, | |
122 | .recvmsg = vcc_recvmsg, | |
123 | .mmap = sock_no_mmap, | |
124 | .sendpage = sock_no_sendpage, | |
125 | }; | |
126 | ||
127 | ||
128 | static int pvc_create(struct socket *sock,int protocol) | |
129 | { | |
130 | sock->ops = &pvc_proto_ops; | |
131 | return vcc_create(sock, protocol, PF_ATMPVC); | |
132 | } | |
133 | ||
134 | ||
135 | static struct net_proto_family pvc_family_ops = { | |
136 | .family = PF_ATMPVC, | |
137 | .create = pvc_create, | |
138 | .owner = THIS_MODULE, | |
139 | }; | |
140 | ||
141 | ||
142 | /* | |
143 | * Initialize the ATM PVC protocol family | |
144 | */ | |
145 | ||
146 | ||
147 | int __init atmpvc_init(void) | |
148 | { | |
149 | return sock_register(&pvc_family_ops); | |
150 | } | |
151 | ||
152 | void atmpvc_exit(void) | |
153 | { | |
154 | sock_unregister(PF_ATMPVC); | |
155 | } |