1 // SPDX-License-Identifier: GPL-2.0 <<
2 /* net/atm/pvc.c - ATM PVC sockets */ 1 /* net/atm/pvc.c - ATM PVC sockets */
3 2
4 /* Written 1995-2000 by Werner Almesberger, EP 3 /* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
5 4
6 5
7 #include <linux/net.h> /* struct sock 6 #include <linux/net.h> /* struct socket, struct proto_ops */
8 #include <linux/atm.h> /* ATM stuff * 7 #include <linux/atm.h> /* ATM stuff */
9 #include <linux/atmdev.h> /* ATM devices 8 #include <linux/atmdev.h> /* ATM devices */
10 #include <linux/errno.h> /* error codes 9 #include <linux/errno.h> /* error codes */
11 #include <linux/kernel.h> /* printk */ 10 #include <linux/kernel.h> /* printk */
12 #include <linux/init.h> 11 #include <linux/init.h>
13 #include <linux/skbuff.h> 12 #include <linux/skbuff.h>
14 #include <linux/bitops.h> 13 #include <linux/bitops.h>
15 #include <linux/export.h> 14 #include <linux/export.h>
16 #include <net/sock.h> /* for sock_no 15 #include <net/sock.h> /* for sock_no_* */
17 16
18 #include "resources.h" /* devs and vc 17 #include "resources.h" /* devs and vccs */
19 #include "common.h" /* common for 18 #include "common.h" /* common for PVCs and SVCs */
20 19
21 20
22 static int pvc_shutdown(struct socket *sock, i 21 static int pvc_shutdown(struct socket *sock, int how)
23 { 22 {
24 return 0; 23 return 0;
25 } 24 }
26 25
27 static int pvc_bind(struct socket *sock, struc 26 static int pvc_bind(struct socket *sock, struct sockaddr *sockaddr,
28 int sockaddr_len) 27 int sockaddr_len)
29 { 28 {
30 struct sock *sk = sock->sk; 29 struct sock *sk = sock->sk;
31 struct sockaddr_atmpvc *addr; 30 struct sockaddr_atmpvc *addr;
32 struct atm_vcc *vcc; 31 struct atm_vcc *vcc;
33 int error; 32 int error;
34 33
35 if (sockaddr_len != sizeof(struct sock 34 if (sockaddr_len != sizeof(struct sockaddr_atmpvc))
36 return -EINVAL; 35 return -EINVAL;
37 addr = (struct sockaddr_atmpvc *)socka 36 addr = (struct sockaddr_atmpvc *)sockaddr;
38 if (addr->sap_family != AF_ATMPVC) 37 if (addr->sap_family != AF_ATMPVC)
39 return -EAFNOSUPPORT; 38 return -EAFNOSUPPORT;
40 lock_sock(sk); 39 lock_sock(sk);
41 vcc = ATM_SD(sock); 40 vcc = ATM_SD(sock);
42 if (!test_bit(ATM_VF_HASQOS, &vcc->fla 41 if (!test_bit(ATM_VF_HASQOS, &vcc->flags)) {
43 error = -EBADFD; 42 error = -EBADFD;
44 goto out; 43 goto out;
45 } 44 }
46 if (test_bit(ATM_VF_PARTIAL, &vcc->fla 45 if (test_bit(ATM_VF_PARTIAL, &vcc->flags)) {
47 if (vcc->vpi != ATM_VPI_UNSPEC 46 if (vcc->vpi != ATM_VPI_UNSPEC)
48 addr->sap_addr.vpi = v 47 addr->sap_addr.vpi = vcc->vpi;
49 if (vcc->vci != ATM_VCI_UNSPEC 48 if (vcc->vci != ATM_VCI_UNSPEC)
50 addr->sap_addr.vci = v 49 addr->sap_addr.vci = vcc->vci;
51 } 50 }
52 error = vcc_connect(sock, addr->sap_ad 51 error = vcc_connect(sock, addr->sap_addr.itf, addr->sap_addr.vpi,
53 addr->sap_addr.vci 52 addr->sap_addr.vci);
54 out: 53 out:
55 release_sock(sk); 54 release_sock(sk);
56 return error; 55 return error;
57 } 56 }
58 57
59 static int pvc_connect(struct socket *sock, st 58 static int pvc_connect(struct socket *sock, struct sockaddr *sockaddr,
60 int sockaddr_len, int f 59 int sockaddr_len, int flags)
61 { 60 {
62 return pvc_bind(sock, sockaddr, sockad 61 return pvc_bind(sock, sockaddr, sockaddr_len);
63 } 62 }
64 63
65 static int pvc_setsockopt(struct socket *sock, 64 static int pvc_setsockopt(struct socket *sock, int level, int optname,
66 sockptr_t optval, un !! 65 char __user *optval, unsigned int optlen)
67 { 66 {
68 struct sock *sk = sock->sk; 67 struct sock *sk = sock->sk;
69 int error; 68 int error;
70 69
71 lock_sock(sk); 70 lock_sock(sk);
72 error = vcc_setsockopt(sock, level, op 71 error = vcc_setsockopt(sock, level, optname, optval, optlen);
73 release_sock(sk); 72 release_sock(sk);
74 return error; 73 return error;
75 } 74 }
76 75
77 static int pvc_getsockopt(struct socket *sock, 76 static int pvc_getsockopt(struct socket *sock, int level, int optname,
78 char __user *optval, 77 char __user *optval, int __user *optlen)
79 { 78 {
80 struct sock *sk = sock->sk; 79 struct sock *sk = sock->sk;
81 int error; 80 int error;
82 81
83 lock_sock(sk); 82 lock_sock(sk);
84 error = vcc_getsockopt(sock, level, op 83 error = vcc_getsockopt(sock, level, optname, optval, optlen);
85 release_sock(sk); 84 release_sock(sk);
86 return error; 85 return error;
87 } 86 }
88 87
89 static int pvc_getname(struct socket *sock, st 88 static int pvc_getname(struct socket *sock, struct sockaddr *sockaddr,
90 int peer) !! 89 int *sockaddr_len, int peer)
91 { 90 {
92 struct sockaddr_atmpvc *addr; 91 struct sockaddr_atmpvc *addr;
93 struct atm_vcc *vcc = ATM_SD(sock); 92 struct atm_vcc *vcc = ATM_SD(sock);
94 93
95 if (!vcc->dev || !test_bit(ATM_VF_ADDR 94 if (!vcc->dev || !test_bit(ATM_VF_ADDR, &vcc->flags))
96 return -ENOTCONN; 95 return -ENOTCONN;
>> 96 *sockaddr_len = sizeof(struct sockaddr_atmpvc);
97 addr = (struct sockaddr_atmpvc *)socka 97 addr = (struct sockaddr_atmpvc *)sockaddr;
98 memset(addr, 0, sizeof(*addr)); 98 memset(addr, 0, sizeof(*addr));
99 addr->sap_family = AF_ATMPVC; 99 addr->sap_family = AF_ATMPVC;
100 addr->sap_addr.itf = vcc->dev->number; 100 addr->sap_addr.itf = vcc->dev->number;
101 addr->sap_addr.vpi = vcc->vpi; 101 addr->sap_addr.vpi = vcc->vpi;
102 addr->sap_addr.vci = vcc->vci; 102 addr->sap_addr.vci = vcc->vci;
103 return sizeof(struct sockaddr_atmpvc); !! 103 return 0;
104 } 104 }
105 105
106 static const struct proto_ops pvc_proto_ops = 106 static const struct proto_ops pvc_proto_ops = {
107 .family = PF_ATMPVC, 107 .family = PF_ATMPVC,
108 .owner = THIS_MODULE, 108 .owner = THIS_MODULE,
109 109
110 .release = vcc_release, 110 .release = vcc_release,
111 .bind = pvc_bind, 111 .bind = pvc_bind,
112 .connect = pvc_connect, 112 .connect = pvc_connect,
113 .socketpair = sock_no_socketpair, 113 .socketpair = sock_no_socketpair,
114 .accept = sock_no_accept, 114 .accept = sock_no_accept,
115 .getname = pvc_getname, 115 .getname = pvc_getname,
116 .poll = vcc_poll, 116 .poll = vcc_poll,
117 .ioctl = vcc_ioctl, 117 .ioctl = vcc_ioctl,
118 #ifdef CONFIG_COMPAT 118 #ifdef CONFIG_COMPAT
119 .compat_ioctl = vcc_compat_ioctl, 119 .compat_ioctl = vcc_compat_ioctl,
120 #endif 120 #endif
121 .gettstamp = sock_gettstamp, <<
122 .listen = sock_no_listen, 121 .listen = sock_no_listen,
123 .shutdown = pvc_shutdown, 122 .shutdown = pvc_shutdown,
124 .setsockopt = pvc_setsockopt, 123 .setsockopt = pvc_setsockopt,
125 .getsockopt = pvc_getsockopt, 124 .getsockopt = pvc_getsockopt,
126 .sendmsg = vcc_sendmsg, 125 .sendmsg = vcc_sendmsg,
127 .recvmsg = vcc_recvmsg, 126 .recvmsg = vcc_recvmsg,
128 .mmap = sock_no_mmap, 127 .mmap = sock_no_mmap,
>> 128 .sendpage = sock_no_sendpage,
129 }; 129 };
130 130
131 131
132 static int pvc_create(struct net *net, struct 132 static int pvc_create(struct net *net, struct socket *sock, int protocol,
133 int kern) 133 int kern)
134 { 134 {
135 if (net != &init_net) 135 if (net != &init_net)
136 return -EAFNOSUPPORT; 136 return -EAFNOSUPPORT;
137 137
138 sock->ops = &pvc_proto_ops; 138 sock->ops = &pvc_proto_ops;
139 return vcc_create(net, sock, protocol, 139 return vcc_create(net, sock, protocol, PF_ATMPVC, kern);
140 } 140 }
141 141
142 static const struct net_proto_family pvc_famil 142 static const struct net_proto_family pvc_family_ops = {
143 .family = PF_ATMPVC, 143 .family = PF_ATMPVC,
144 .create = pvc_create, 144 .create = pvc_create,
145 .owner = THIS_MODULE, 145 .owner = THIS_MODULE,
146 }; 146 };
147 147
148 148
149 /* 149 /*
150 * Initialize the ATM PVC protocol family 150 * Initialize the ATM PVC protocol family
151 */ 151 */
152 152
153 153
154 int __init atmpvc_init(void) 154 int __init atmpvc_init(void)
155 { 155 {
156 return sock_register(&pvc_family_ops); 156 return sock_register(&pvc_family_ops);
157 } 157 }
158 158
159 void atmpvc_exit(void) 159 void atmpvc_exit(void)
160 { 160 {
161 sock_unregister(PF_ATMPVC); 161 sock_unregister(PF_ATMPVC);
162 } 162 }
163 163
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