^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /* net/atm/pvc.c - ATM PVC sockets */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) /* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/net.h> /* struct socket, struct proto_ops */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/atm.h> /* ATM stuff */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/atmdev.h> /* ATM devices */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/errno.h> /* error codes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/kernel.h> /* printk */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/skbuff.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/bitops.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <net/sock.h> /* for sock_no_* */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include "resources.h" /* devs and vccs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include "common.h" /* common for PVCs and SVCs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) static int pvc_shutdown(struct socket *sock, int how)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) static int pvc_bind(struct socket *sock, struct sockaddr *sockaddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) int sockaddr_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) struct sock *sk = sock->sk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) struct sockaddr_atmpvc *addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) struct atm_vcc *vcc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) if (sockaddr_len != sizeof(struct sockaddr_atmpvc))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) addr = (struct sockaddr_atmpvc *)sockaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) if (addr->sap_family != AF_ATMPVC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) return -EAFNOSUPPORT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) lock_sock(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) vcc = ATM_SD(sock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) if (!test_bit(ATM_VF_HASQOS, &vcc->flags)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) error = -EBADFD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) if (test_bit(ATM_VF_PARTIAL, &vcc->flags)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) if (vcc->vpi != ATM_VPI_UNSPEC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) addr->sap_addr.vpi = vcc->vpi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) if (vcc->vci != ATM_VCI_UNSPEC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) addr->sap_addr.vci = vcc->vci;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) error = vcc_connect(sock, addr->sap_addr.itf, addr->sap_addr.vpi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) addr->sap_addr.vci);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) release_sock(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) static int pvc_connect(struct socket *sock, struct sockaddr *sockaddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) int sockaddr_len, int flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) return pvc_bind(sock, sockaddr, sockaddr_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) static int pvc_setsockopt(struct socket *sock, int level, int optname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) sockptr_t optval, unsigned int optlen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) struct sock *sk = sock->sk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) lock_sock(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) error = vcc_setsockopt(sock, level, optname, optval, optlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) release_sock(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) static int pvc_getsockopt(struct socket *sock, int level, int optname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) char __user *optval, int __user *optlen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) struct sock *sk = sock->sk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) lock_sock(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) error = vcc_getsockopt(sock, level, optname, optval, optlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) release_sock(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) static int pvc_getname(struct socket *sock, struct sockaddr *sockaddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) int peer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) struct sockaddr_atmpvc *addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) struct atm_vcc *vcc = ATM_SD(sock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) if (!vcc->dev || !test_bit(ATM_VF_ADDR, &vcc->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) return -ENOTCONN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) addr = (struct sockaddr_atmpvc *)sockaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) memset(addr, 0, sizeof(*addr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) addr->sap_family = AF_ATMPVC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) addr->sap_addr.itf = vcc->dev->number;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) addr->sap_addr.vpi = vcc->vpi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) addr->sap_addr.vci = vcc->vci;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) return sizeof(struct sockaddr_atmpvc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) static const struct proto_ops pvc_proto_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) .family = PF_ATMPVC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) .release = vcc_release,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) .bind = pvc_bind,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) .connect = pvc_connect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) .socketpair = sock_no_socketpair,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) .accept = sock_no_accept,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) .getname = pvc_getname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) .poll = vcc_poll,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) .ioctl = vcc_ioctl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) #ifdef CONFIG_COMPAT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) .compat_ioctl = vcc_compat_ioctl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) .gettstamp = sock_gettstamp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) .listen = sock_no_listen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) .shutdown = pvc_shutdown,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) .setsockopt = pvc_setsockopt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) .getsockopt = pvc_getsockopt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) .sendmsg = vcc_sendmsg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) .recvmsg = vcc_recvmsg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) .mmap = sock_no_mmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) .sendpage = sock_no_sendpage,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) static int pvc_create(struct net *net, struct socket *sock, int protocol,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) int kern)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) if (net != &init_net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) return -EAFNOSUPPORT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) sock->ops = &pvc_proto_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) return vcc_create(net, sock, protocol, PF_ATMPVC, kern);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) static const struct net_proto_family pvc_family_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) .family = PF_ATMPVC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) .create = pvc_create,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) * Initialize the ATM PVC protocol family
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) int __init atmpvc_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) return sock_register(&pvc_family_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) void atmpvc_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) sock_unregister(PF_ATMPVC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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