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1// SPDX-License-Identifier: GPL-2.0
2/* net/atm/pvc.c - ATM PVC sockets */
3
4/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
5
6
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 <linux/export.h>
16#include <net/sock.h> /* for sock_no_* */
17
18#include "resources.h" /* devs and vccs */
19#include "common.h" /* common for PVCs and SVCs */
20
21
22static int pvc_shutdown(struct socket *sock, int how)
23{
24 return 0;
25}
26
27static 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))
36 return -EINVAL;
37 addr = (struct sockaddr_atmpvc *)sockaddr;
38 if (addr->sap_family != AF_ATMPVC)
39 return -EAFNOSUPPORT;
40 lock_sock(sk);
41 vcc = ATM_SD(sock);
42 if (!test_bit(ATM_VF_HASQOS, &vcc->flags)) {
43 error = -EBADFD;
44 goto out;
45 }
46 if (test_bit(ATM_VF_PARTIAL, &vcc->flags)) {
47 if (vcc->vpi != ATM_VPI_UNSPEC)
48 addr->sap_addr.vpi = vcc->vpi;
49 if (vcc->vci != ATM_VCI_UNSPEC)
50 addr->sap_addr.vci = vcc->vci;
51 }
52 error = vcc_connect(sock, addr->sap_addr.itf, addr->sap_addr.vpi,
53 addr->sap_addr.vci);
54out:
55 release_sock(sk);
56 return error;
57}
58
59static int pvc_connect(struct socket *sock, struct sockaddr *sockaddr,
60 int sockaddr_len, int flags)
61{
62 return pvc_bind(sock, sockaddr, sockaddr_len);
63}
64
65static int pvc_setsockopt(struct socket *sock, int level, int optname,
66 sockptr_t optval, unsigned int optlen)
67{
68 struct sock *sk = sock->sk;
69 int error;
70
71 lock_sock(sk);
72 error = vcc_setsockopt(sock, level, optname, optval, optlen);
73 release_sock(sk);
74 return error;
75}
76
77static int pvc_getsockopt(struct socket *sock, int level, int optname,
78 char __user *optval, int __user *optlen)
79{
80 struct sock *sk = sock->sk;
81 int error;
82
83 lock_sock(sk);
84 error = vcc_getsockopt(sock, level, optname, optval, optlen);
85 release_sock(sk);
86 return error;
87}
88
89static int pvc_getname(struct socket *sock, struct sockaddr *sockaddr,
90 int peer)
91{
92 struct sockaddr_atmpvc *addr;
93 struct atm_vcc *vcc = ATM_SD(sock);
94
95 if (!vcc->dev || !test_bit(ATM_VF_ADDR, &vcc->flags))
96 return -ENOTCONN;
97 addr = (struct sockaddr_atmpvc *)sockaddr;
98 memset(addr, 0, sizeof(*addr));
99 addr->sap_family = AF_ATMPVC;
100 addr->sap_addr.itf = vcc->dev->number;
101 addr->sap_addr.vpi = vcc->vpi;
102 addr->sap_addr.vci = vcc->vci;
103 return sizeof(struct sockaddr_atmpvc);
104}
105
106static const struct proto_ops pvc_proto_ops = {
107 .family = PF_ATMPVC,
108 .owner = THIS_MODULE,
109
110 .release = vcc_release,
111 .bind = pvc_bind,
112 .connect = pvc_connect,
113 .socketpair = sock_no_socketpair,
114 .accept = sock_no_accept,
115 .getname = pvc_getname,
116 .poll = vcc_poll,
117 .ioctl = vcc_ioctl,
118#ifdef CONFIG_COMPAT
119 .compat_ioctl = vcc_compat_ioctl,
120#endif
121 .gettstamp = sock_gettstamp,
122 .listen = sock_no_listen,
123 .shutdown = pvc_shutdown,
124 .setsockopt = pvc_setsockopt,
125 .getsockopt = pvc_getsockopt,
126 .sendmsg = vcc_sendmsg,
127 .recvmsg = vcc_recvmsg,
128 .mmap = sock_no_mmap,
129};
130
131
132static int pvc_create(struct net *net, struct socket *sock, int protocol,
133 int kern)
134{
135 if (net != &init_net)
136 return -EAFNOSUPPORT;
137
138 sock->ops = &pvc_proto_ops;
139 return vcc_create(net, sock, protocol, PF_ATMPVC, kern);
140}
141
142static const struct net_proto_family pvc_family_ops = {
143 .family = PF_ATMPVC,
144 .create = pvc_create,
145 .owner = THIS_MODULE,
146};
147
148
149/*
150 * Initialize the ATM PVC protocol family
151 */
152
153
154int __init atmpvc_init(void)
155{
156 return sock_register(&pvc_family_ops);
157}
158
159void atmpvc_exit(void)
160{
161 sock_unregister(PF_ATMPVC);
162}
1// SPDX-License-Identifier: GPL-2.0
2/* net/atm/pvc.c - ATM PVC sockets */
3
4/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
5
6
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 <linux/export.h>
16#include <net/sock.h> /* for sock_no_* */
17
18#include "resources.h" /* devs and vccs */
19#include "common.h" /* common for PVCs and SVCs */
20
21
22static int pvc_shutdown(struct socket *sock, int how)
23{
24 return 0;
25}
26
27static 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))
36 return -EINVAL;
37 addr = (struct sockaddr_atmpvc *)sockaddr;
38 if (addr->sap_family != AF_ATMPVC)
39 return -EAFNOSUPPORT;
40 lock_sock(sk);
41 vcc = ATM_SD(sock);
42 if (!test_bit(ATM_VF_HASQOS, &vcc->flags)) {
43 error = -EBADFD;
44 goto out;
45 }
46 if (test_bit(ATM_VF_PARTIAL, &vcc->flags)) {
47 if (vcc->vpi != ATM_VPI_UNSPEC)
48 addr->sap_addr.vpi = vcc->vpi;
49 if (vcc->vci != ATM_VCI_UNSPEC)
50 addr->sap_addr.vci = vcc->vci;
51 }
52 error = vcc_connect(sock, addr->sap_addr.itf, addr->sap_addr.vpi,
53 addr->sap_addr.vci);
54out:
55 release_sock(sk);
56 return error;
57}
58
59static int pvc_connect(struct socket *sock, struct sockaddr *sockaddr,
60 int sockaddr_len, int flags)
61{
62 return pvc_bind(sock, sockaddr, sockaddr_len);
63}
64
65static int pvc_setsockopt(struct socket *sock, int level, int optname,
66 sockptr_t optval, unsigned int optlen)
67{
68 struct sock *sk = sock->sk;
69 int error;
70
71 lock_sock(sk);
72 error = vcc_setsockopt(sock, level, optname, optval, optlen);
73 release_sock(sk);
74 return error;
75}
76
77static int pvc_getsockopt(struct socket *sock, int level, int optname,
78 char __user *optval, int __user *optlen)
79{
80 struct sock *sk = sock->sk;
81 int error;
82
83 lock_sock(sk);
84 error = vcc_getsockopt(sock, level, optname, optval, optlen);
85 release_sock(sk);
86 return error;
87}
88
89static int pvc_getname(struct socket *sock, struct sockaddr *sockaddr,
90 int peer)
91{
92 struct sockaddr_atmpvc *addr;
93 struct atm_vcc *vcc = ATM_SD(sock);
94
95 if (!vcc->dev || !test_bit(ATM_VF_ADDR, &vcc->flags))
96 return -ENOTCONN;
97 addr = (struct sockaddr_atmpvc *)sockaddr;
98 memset(addr, 0, sizeof(*addr));
99 addr->sap_family = AF_ATMPVC;
100 addr->sap_addr.itf = vcc->dev->number;
101 addr->sap_addr.vpi = vcc->vpi;
102 addr->sap_addr.vci = vcc->vci;
103 return sizeof(struct sockaddr_atmpvc);
104}
105
106static const struct proto_ops pvc_proto_ops = {
107 .family = PF_ATMPVC,
108 .owner = THIS_MODULE,
109
110 .release = vcc_release,
111 .bind = pvc_bind,
112 .connect = pvc_connect,
113 .socketpair = sock_no_socketpair,
114 .accept = sock_no_accept,
115 .getname = pvc_getname,
116 .poll = vcc_poll,
117 .ioctl = vcc_ioctl,
118#ifdef CONFIG_COMPAT
119 .compat_ioctl = vcc_compat_ioctl,
120#endif
121 .gettstamp = sock_gettstamp,
122 .listen = sock_no_listen,
123 .shutdown = pvc_shutdown,
124 .setsockopt = pvc_setsockopt,
125 .getsockopt = pvc_getsockopt,
126 .sendmsg = vcc_sendmsg,
127 .recvmsg = vcc_recvmsg,
128 .mmap = sock_no_mmap,
129 .sendpage = sock_no_sendpage,
130};
131
132
133static int pvc_create(struct net *net, struct socket *sock, int protocol,
134 int kern)
135{
136 if (net != &init_net)
137 return -EAFNOSUPPORT;
138
139 sock->ops = &pvc_proto_ops;
140 return vcc_create(net, sock, protocol, PF_ATMPVC, kern);
141}
142
143static const struct net_proto_family pvc_family_ops = {
144 .family = PF_ATMPVC,
145 .create = pvc_create,
146 .owner = THIS_MODULE,
147};
148
149
150/*
151 * Initialize the ATM PVC protocol family
152 */
153
154
155int __init atmpvc_init(void)
156{
157 return sock_register(&pvc_family_ops);
158}
159
160void atmpvc_exit(void)
161{
162 sock_unregister(PF_ATMPVC);
163}