^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /* net/atm/common.c - ATM sockets (common part for PVC and SVC) */
^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) #define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/kmod.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/net.h> /* struct socket, struct proto_ops */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/atm.h> /* ATM stuff */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/atmdev.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/socket.h> /* SOL_SOCKET */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/errno.h> /* error codes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/capability.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/sched/signal.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/time64.h> /* 64-bit time for seconds */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/skbuff.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/bitops.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <net/sock.h> /* struct sock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/poll.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/atomic.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include "resources.h" /* atm_find_dev */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include "common.h" /* prototypes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include "protocols.h" /* atm_init_<transport> */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include "addr.h" /* address registry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include "signaling.h" /* for WAITING and sigd_attach */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) struct hlist_head vcc_hash[VCC_HTABLE_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) EXPORT_SYMBOL(vcc_hash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) DEFINE_RWLOCK(vcc_sklist_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) EXPORT_SYMBOL(vcc_sklist_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) static ATOMIC_NOTIFIER_HEAD(atm_dev_notify_chain);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) static void __vcc_insert_socket(struct sock *sk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) struct atm_vcc *vcc = atm_sk(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) struct hlist_head *head = &vcc_hash[vcc->vci & (VCC_HTABLE_SIZE - 1)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) sk->sk_hash = vcc->vci & (VCC_HTABLE_SIZE - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) sk_add_node(sk, head);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) void vcc_insert_socket(struct sock *sk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) write_lock_irq(&vcc_sklist_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) __vcc_insert_socket(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) write_unlock_irq(&vcc_sklist_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) EXPORT_SYMBOL(vcc_insert_socket);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) static void vcc_remove_socket(struct sock *sk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) write_lock_irq(&vcc_sklist_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) sk_del_node_init(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) write_unlock_irq(&vcc_sklist_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) static bool vcc_tx_ready(struct atm_vcc *vcc, unsigned int size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) struct sock *sk = sk_atm(vcc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) if (sk_wmem_alloc_get(sk) && !atm_may_send(vcc, size)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) pr_debug("Sorry: wmem_alloc = %d, size = %d, sndbuf = %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) sk_wmem_alloc_get(sk), size, sk->sk_sndbuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) static void vcc_sock_destruct(struct sock *sk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) if (atomic_read(&sk->sk_rmem_alloc))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) printk(KERN_DEBUG "%s: rmem leakage (%d bytes) detected.\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) __func__, atomic_read(&sk->sk_rmem_alloc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) if (refcount_read(&sk->sk_wmem_alloc))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) printk(KERN_DEBUG "%s: wmem leakage (%d bytes) detected.\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) __func__, refcount_read(&sk->sk_wmem_alloc));
^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 void vcc_def_wakeup(struct sock *sk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) struct socket_wq *wq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) wq = rcu_dereference(sk->sk_wq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) if (skwq_has_sleeper(wq))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) wake_up(&wq->wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) static inline int vcc_writable(struct sock *sk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) struct atm_vcc *vcc = atm_sk(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) return (vcc->qos.txtp.max_sdu +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) refcount_read(&sk->sk_wmem_alloc)) <= sk->sk_sndbuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) static void vcc_write_space(struct sock *sk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) struct socket_wq *wq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) if (vcc_writable(sk)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) wq = rcu_dereference(sk->sk_wq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) if (skwq_has_sleeper(wq))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) wake_up_interruptible(&wq->wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) sk_wake_async(sk, SOCK_WAKE_SPACE, POLL_OUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) static void vcc_release_cb(struct sock *sk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) struct atm_vcc *vcc = atm_sk(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) if (vcc->release_cb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) vcc->release_cb(vcc);
^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 struct proto vcc_proto = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) .name = "VCC",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) .obj_size = sizeof(struct atm_vcc),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) .release_cb = vcc_release_cb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) int vcc_create(struct net *net, struct socket *sock, int protocol, int family, int kern)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) struct sock *sk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) struct atm_vcc *vcc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) sock->sk = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) if (sock->type == SOCK_STREAM)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) sk = sk_alloc(net, family, GFP_KERNEL, &vcc_proto, kern);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) if (!sk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) sock_init_data(sock, sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) sk->sk_state_change = vcc_def_wakeup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) sk->sk_write_space = vcc_write_space;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) vcc = atm_sk(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) vcc->dev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) memset(&vcc->local, 0, sizeof(struct sockaddr_atmsvc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) memset(&vcc->remote, 0, sizeof(struct sockaddr_atmsvc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) vcc->qos.txtp.max_sdu = 1 << 16; /* for meta VCs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) refcount_set(&sk->sk_wmem_alloc, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) atomic_set(&sk->sk_rmem_alloc, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) vcc->push = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) vcc->pop = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) vcc->owner = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) vcc->push_oam = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) vcc->release_cb = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) vcc->vpi = vcc->vci = 0; /* no VCI/VPI yet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) vcc->atm_options = vcc->aal_options = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) sk->sk_destruct = vcc_sock_destruct;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) static void vcc_destroy_socket(struct sock *sk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) struct atm_vcc *vcc = atm_sk(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) set_bit(ATM_VF_CLOSE, &vcc->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) clear_bit(ATM_VF_READY, &vcc->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) if (vcc->dev && vcc->dev->ops->close)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) vcc->dev->ops->close(vcc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) if (vcc->push)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) vcc->push(vcc, NULL); /* atmarpd has no push */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) module_put(vcc->owner);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) atm_return(vcc, skb->truesize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) if (vcc->dev && vcc->dev->ops->owner) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) module_put(vcc->dev->ops->owner);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) atm_dev_put(vcc->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) vcc_remove_socket(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) int vcc_release(struct socket *sock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) struct sock *sk = sock->sk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) if (sk) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) lock_sock(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) vcc_destroy_socket(sock->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) release_sock(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) sock_put(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) void vcc_release_async(struct atm_vcc *vcc, int reply)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) struct sock *sk = sk_atm(vcc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) set_bit(ATM_VF_CLOSE, &vcc->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) sk->sk_shutdown |= RCV_SHUTDOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) sk->sk_err = -reply;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) clear_bit(ATM_VF_WAITING, &vcc->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) sk->sk_state_change(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) EXPORT_SYMBOL(vcc_release_async);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) void vcc_process_recv_queue(struct atm_vcc *vcc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) struct sk_buff_head queue, *rq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) struct sk_buff *skb, *tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) __skb_queue_head_init(&queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) rq = &sk_atm(vcc)->sk_receive_queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) spin_lock_irqsave(&rq->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) skb_queue_splice_init(rq, &queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) spin_unlock_irqrestore(&rq->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) skb_queue_walk_safe(&queue, skb, tmp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) __skb_unlink(skb, &queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) vcc->push(vcc, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) EXPORT_SYMBOL(vcc_process_recv_queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) void atm_dev_signal_change(struct atm_dev *dev, char signal)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) pr_debug("%s signal=%d dev=%p number=%d dev->signal=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) __func__, signal, dev, dev->number, dev->signal);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) /* atm driver sending invalid signal */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) WARN_ON(signal < ATM_PHY_SIG_LOST || signal > ATM_PHY_SIG_FOUND);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) if (dev->signal == signal)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) return; /* no change */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) dev->signal = signal;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) atomic_notifier_call_chain(&atm_dev_notify_chain, signal, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) EXPORT_SYMBOL(atm_dev_signal_change);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) void atm_dev_release_vccs(struct atm_dev *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) write_lock_irq(&vcc_sklist_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) for (i = 0; i < VCC_HTABLE_SIZE; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) struct hlist_head *head = &vcc_hash[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) struct hlist_node *tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) struct sock *s;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) struct atm_vcc *vcc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) sk_for_each_safe(s, tmp, head) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) vcc = atm_sk(s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) if (vcc->dev == dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) vcc_release_async(vcc, -EPIPE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) sk_del_node_init(s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) write_unlock_irq(&vcc_sklist_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) EXPORT_SYMBOL(atm_dev_release_vccs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) static int adjust_tp(struct atm_trafprm *tp, unsigned char aal)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) int max_sdu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) if (!tp->traffic_class)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) switch (aal) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) case ATM_AAL0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) max_sdu = ATM_CELL_SIZE-1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) case ATM_AAL34:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) max_sdu = ATM_MAX_AAL34_PDU;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) pr_warn("AAL problems ... (%d)\n", aal);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) case ATM_AAL5:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) max_sdu = ATM_MAX_AAL5_PDU;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) if (!tp->max_sdu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) tp->max_sdu = max_sdu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) else if (tp->max_sdu > max_sdu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) if (!tp->max_cdv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) tp->max_cdv = ATM_MAX_CDV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) static int check_ci(const struct atm_vcc *vcc, short vpi, int vci)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) struct hlist_head *head = &vcc_hash[vci & (VCC_HTABLE_SIZE - 1)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) struct sock *s;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) struct atm_vcc *walk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) sk_for_each(s, head) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) walk = atm_sk(s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) if (walk->dev != vcc->dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) if (test_bit(ATM_VF_ADDR, &walk->flags) && walk->vpi == vpi &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) walk->vci == vci && ((walk->qos.txtp.traffic_class !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) ATM_NONE && vcc->qos.txtp.traffic_class != ATM_NONE) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) (walk->qos.rxtp.traffic_class != ATM_NONE &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) vcc->qos.rxtp.traffic_class != ATM_NONE)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) return -EADDRINUSE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) /* allow VCCs with same VPI/VCI iff they don't collide on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) TX/RX (but we may refuse such sharing for other reasons,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) e.g. if protocol requires to have both channels) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) static int find_ci(const struct atm_vcc *vcc, short *vpi, int *vci)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) static short p; /* poor man's per-device cache */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) static int c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) short old_p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) int old_c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) if (*vpi != ATM_VPI_ANY && *vci != ATM_VCI_ANY) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) err = check_ci(vcc, *vpi, *vci);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) /* last scan may have left values out of bounds for current device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) if (*vpi != ATM_VPI_ANY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) p = *vpi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) else if (p >= 1 << vcc->dev->ci_range.vpi_bits)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) p = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) if (*vci != ATM_VCI_ANY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) c = *vci;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) else if (c < ATM_NOT_RSV_VCI || c >= 1 << vcc->dev->ci_range.vci_bits)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) c = ATM_NOT_RSV_VCI;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) old_p = p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) old_c = c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) if (!check_ci(vcc, p, c)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) *vpi = p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) *vci = c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) if (*vci == ATM_VCI_ANY) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) c++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) if (c >= 1 << vcc->dev->ci_range.vci_bits)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) c = ATM_NOT_RSV_VCI;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) if ((c == ATM_NOT_RSV_VCI || *vci != ATM_VCI_ANY) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) *vpi == ATM_VPI_ANY) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) p++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) if (p >= 1 << vcc->dev->ci_range.vpi_bits)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) p = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) } while (old_p != p || old_c != c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) return -EADDRINUSE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) static int __vcc_connect(struct atm_vcc *vcc, struct atm_dev *dev, short vpi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) int vci)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) struct sock *sk = sk_atm(vcc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) if ((vpi != ATM_VPI_UNSPEC && vpi != ATM_VPI_ANY &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) vpi >> dev->ci_range.vpi_bits) || (vci != ATM_VCI_UNSPEC &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) vci != ATM_VCI_ANY && vci >> dev->ci_range.vci_bits))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) if (vci > 0 && vci < ATM_NOT_RSV_VCI && !capable(CAP_NET_BIND_SERVICE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) return -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) error = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) if (!try_module_get(dev->ops->owner))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) vcc->dev = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) write_lock_irq(&vcc_sklist_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) if (test_bit(ATM_DF_REMOVED, &dev->flags) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) (error = find_ci(vcc, &vpi, &vci))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) write_unlock_irq(&vcc_sklist_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) goto fail_module_put;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) vcc->vpi = vpi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) vcc->vci = vci;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) __vcc_insert_socket(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) write_unlock_irq(&vcc_sklist_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) switch (vcc->qos.aal) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) case ATM_AAL0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) error = atm_init_aal0(vcc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) vcc->stats = &dev->stats.aal0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) case ATM_AAL34:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) error = atm_init_aal34(vcc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) vcc->stats = &dev->stats.aal34;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) case ATM_NO_AAL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) /* ATM_AAL5 is also used in the "0 for default" case */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) vcc->qos.aal = ATM_AAL5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) case ATM_AAL5:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) error = atm_init_aal5(vcc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) vcc->stats = &dev->stats.aal5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) error = -EPROTOTYPE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) if (!error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) error = adjust_tp(&vcc->qos.txtp, vcc->qos.aal);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) if (!error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) error = adjust_tp(&vcc->qos.rxtp, vcc->qos.aal);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) pr_debug("VCC %d.%d, AAL %d\n", vpi, vci, vcc->qos.aal);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) pr_debug(" TX: %d, PCR %d..%d, SDU %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) vcc->qos.txtp.traffic_class,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) vcc->qos.txtp.min_pcr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) vcc->qos.txtp.max_pcr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) vcc->qos.txtp.max_sdu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) pr_debug(" RX: %d, PCR %d..%d, SDU %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) vcc->qos.rxtp.traffic_class,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) vcc->qos.rxtp.min_pcr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) vcc->qos.rxtp.max_pcr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) vcc->qos.rxtp.max_sdu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) if (dev->ops->open) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) error = dev->ops->open(vcc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) fail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) vcc_remove_socket(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) fail_module_put:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) module_put(dev->ops->owner);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) /* ensure we get dev module ref count correct */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) vcc->dev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) int vcc_connect(struct socket *sock, int itf, short vpi, int vci)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) struct atm_dev *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) struct atm_vcc *vcc = ATM_SD(sock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) pr_debug("(vpi %d, vci %d)\n", vpi, vci);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) if (sock->state == SS_CONNECTED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) return -EISCONN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) if (sock->state != SS_UNCONNECTED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) if (!(vpi || vci))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) if (vpi != ATM_VPI_UNSPEC && vci != ATM_VCI_UNSPEC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) clear_bit(ATM_VF_PARTIAL, &vcc->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) if (test_bit(ATM_VF_PARTIAL, &vcc->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) pr_debug("(TX: cl %d,bw %d-%d,sdu %d; "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) "RX: cl %d,bw %d-%d,sdu %d,AAL %s%d)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) vcc->qos.txtp.traffic_class, vcc->qos.txtp.min_pcr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) vcc->qos.txtp.max_pcr, vcc->qos.txtp.max_sdu,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) vcc->qos.rxtp.traffic_class, vcc->qos.rxtp.min_pcr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) vcc->qos.rxtp.max_pcr, vcc->qos.rxtp.max_sdu,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) vcc->qos.aal == ATM_AAL5 ? "" :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) vcc->qos.aal == ATM_AAL0 ? "" : " ??? code ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) vcc->qos.aal == ATM_AAL0 ? 0 : vcc->qos.aal);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) if (!test_bit(ATM_VF_HASQOS, &vcc->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) return -EBADFD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) if (vcc->qos.txtp.traffic_class == ATM_ANYCLASS ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) vcc->qos.rxtp.traffic_class == ATM_ANYCLASS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) if (likely(itf != ATM_ITF_ANY)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) dev = try_then_request_module(atm_dev_lookup(itf),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) "atm-device-%d", itf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) dev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) mutex_lock(&atm_dev_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) if (!list_empty(&atm_devs)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) dev = list_entry(atm_devs.next,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) struct atm_dev, dev_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) atm_dev_hold(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) mutex_unlock(&atm_dev_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) if (!dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) error = __vcc_connect(vcc, dev, vpi, vci);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) atm_dev_put(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) if (vpi == ATM_VPI_UNSPEC || vci == ATM_VCI_UNSPEC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) set_bit(ATM_VF_PARTIAL, &vcc->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) if (test_bit(ATM_VF_READY, &ATM_SD(sock)->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) sock->state = SS_CONNECTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) int vcc_recvmsg(struct socket *sock, struct msghdr *msg, size_t size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) int flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) struct sock *sk = sock->sk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) struct atm_vcc *vcc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) int copied, error = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) if (sock->state != SS_CONNECTED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) return -ENOTCONN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) /* only handle MSG_DONTWAIT and MSG_PEEK */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) if (flags & ~(MSG_DONTWAIT | MSG_PEEK))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) vcc = ATM_SD(sock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) if (test_bit(ATM_VF_RELEASED, &vcc->flags) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) test_bit(ATM_VF_CLOSE, &vcc->flags) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) !test_bit(ATM_VF_READY, &vcc->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) skb = skb_recv_datagram(sk, flags, flags & MSG_DONTWAIT, &error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) if (!skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) copied = skb->len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) if (copied > size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) copied = size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) msg->msg_flags |= MSG_TRUNC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) error = skb_copy_datagram_msg(skb, 0, msg, copied);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) sock_recv_ts_and_drops(msg, sk, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) if (!(flags & MSG_PEEK)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) pr_debug("%d -= %d\n", atomic_read(&sk->sk_rmem_alloc),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) skb->truesize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) atm_return(vcc, skb->truesize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) skb_free_datagram(sk, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) return copied;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) int vcc_sendmsg(struct socket *sock, struct msghdr *m, size_t size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) struct sock *sk = sock->sk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) DEFINE_WAIT(wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) struct atm_vcc *vcc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) int eff, error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) lock_sock(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) if (sock->state != SS_CONNECTED) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) error = -ENOTCONN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) if (m->msg_name) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) error = -EISCONN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) vcc = ATM_SD(sock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) if (test_bit(ATM_VF_RELEASED, &vcc->flags) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) test_bit(ATM_VF_CLOSE, &vcc->flags) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) !test_bit(ATM_VF_READY, &vcc->flags)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) error = -EPIPE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) send_sig(SIGPIPE, current, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) if (!size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) error = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) if (size > vcc->qos.txtp.max_sdu) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) error = -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) eff = (size+3) & ~3; /* align to word boundary */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) error = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) while (!vcc_tx_ready(vcc, eff)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) if (m->msg_flags & MSG_DONTWAIT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) error = -EAGAIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) schedule();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) if (signal_pending(current)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) error = -ERESTARTSYS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) if (test_bit(ATM_VF_RELEASED, &vcc->flags) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) test_bit(ATM_VF_CLOSE, &vcc->flags) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) !test_bit(ATM_VF_READY, &vcc->flags)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) error = -EPIPE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) send_sig(SIGPIPE, current, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) finish_wait(sk_sleep(sk), &wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) skb = alloc_skb(eff, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) if (!skb) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) error = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) pr_debug("%d += %d\n", sk_wmem_alloc_get(sk), skb->truesize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) atm_account_tx(vcc, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) skb->dev = NULL; /* for paths shared with net_device interfaces */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) if (!copy_from_iter_full(skb_put(skb, size), size, &m->msg_iter)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) error = -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) if (eff != size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) memset(skb->data + size, 0, eff-size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) error = vcc->dev->ops->send(vcc, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) error = error ? error : size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) release_sock(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) __poll_t vcc_poll(struct file *file, struct socket *sock, poll_table *wait)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) struct sock *sk = sock->sk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) struct atm_vcc *vcc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) __poll_t mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) sock_poll_wait(file, sock, wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) mask = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) vcc = ATM_SD(sock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) /* exceptional events */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) if (sk->sk_err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) mask = EPOLLERR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) if (test_bit(ATM_VF_RELEASED, &vcc->flags) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) test_bit(ATM_VF_CLOSE, &vcc->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) mask |= EPOLLHUP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) /* readable? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) if (!skb_queue_empty_lockless(&sk->sk_receive_queue))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) mask |= EPOLLIN | EPOLLRDNORM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) /* writable? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) if (sock->state == SS_CONNECTING &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) test_bit(ATM_VF_WAITING, &vcc->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) return mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) if (vcc->qos.txtp.traffic_class != ATM_NONE &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) vcc_writable(sk))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) mask |= EPOLLOUT | EPOLLWRNORM | EPOLLWRBAND;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) return mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) static int atm_change_qos(struct atm_vcc *vcc, struct atm_qos *qos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) * Don't let the QoS change the already connected AAL type nor the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) * traffic class.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) if (qos->aal != vcc->qos.aal ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) qos->rxtp.traffic_class != vcc->qos.rxtp.traffic_class ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) qos->txtp.traffic_class != vcc->qos.txtp.traffic_class)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) error = adjust_tp(&qos->txtp, qos->aal);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) if (!error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) error = adjust_tp(&qos->rxtp, qos->aal);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) if (!vcc->dev->ops->change_qos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) if (sk_atm(vcc)->sk_family == AF_ATMPVC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) return vcc->dev->ops->change_qos(vcc, qos, ATM_MF_SET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) return svc_change_qos(vcc, qos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) static int check_tp(const struct atm_trafprm *tp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) /* @@@ Should be merged with adjust_tp */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) if (!tp->traffic_class || tp->traffic_class == ATM_ANYCLASS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) if (tp->traffic_class != ATM_UBR && !tp->min_pcr && !tp->pcr &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) !tp->max_pcr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) if (tp->min_pcr == ATM_MAX_PCR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) if (tp->min_pcr && tp->max_pcr && tp->max_pcr != ATM_MAX_PCR &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) tp->min_pcr > tp->max_pcr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) * We allow pcr to be outside [min_pcr,max_pcr], because later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) * adjustment may still push it in the valid range.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) static int check_qos(const struct atm_qos *qos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) if (!qos->txtp.traffic_class && !qos->rxtp.traffic_class)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) if (qos->txtp.traffic_class != qos->rxtp.traffic_class &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) qos->txtp.traffic_class && qos->rxtp.traffic_class &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) qos->txtp.traffic_class != ATM_ANYCLASS &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) qos->rxtp.traffic_class != ATM_ANYCLASS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) error = check_tp(&qos->txtp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) return check_tp(&qos->rxtp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) int vcc_setsockopt(struct socket *sock, int level, int optname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) sockptr_t optval, unsigned int optlen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) struct atm_vcc *vcc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) unsigned long value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) if (__SO_LEVEL_MATCH(optname, level) && optlen != __SO_SIZE(optname))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) vcc = ATM_SD(sock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) switch (optname) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) case SO_ATMQOS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) struct atm_qos qos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) if (copy_from_sockptr(&qos, optval, sizeof(qos)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) error = check_qos(&qos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) if (sock->state == SS_CONNECTED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) return atm_change_qos(vcc, &qos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) if (sock->state != SS_UNCONNECTED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) return -EBADFD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) vcc->qos = qos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) set_bit(ATM_VF_HASQOS, &vcc->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) case SO_SETCLP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) if (copy_from_sockptr(&value, optval, sizeof(value)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) if (value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) vcc->atm_options |= ATM_ATMOPT_CLP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) vcc->atm_options &= ~ATM_ATMOPT_CLP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) int vcc_getsockopt(struct socket *sock, int level, int optname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) char __user *optval, int __user *optlen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) struct atm_vcc *vcc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) int len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) if (get_user(len, optlen))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) if (__SO_LEVEL_MATCH(optname, level) && len != __SO_SIZE(optname))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) vcc = ATM_SD(sock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) switch (optname) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) case SO_ATMQOS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) if (!test_bit(ATM_VF_HASQOS, &vcc->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) return copy_to_user(optval, &vcc->qos, sizeof(vcc->qos))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) ? -EFAULT : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) case SO_SETCLP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) return put_user(vcc->atm_options & ATM_ATMOPT_CLP ? 1 : 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) (unsigned long __user *)optval) ? -EFAULT : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) case SO_ATMPVC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) struct sockaddr_atmpvc pvc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) if (!vcc->dev || !test_bit(ATM_VF_ADDR, &vcc->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) return -ENOTCONN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) memset(&pvc, 0, sizeof(pvc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) pvc.sap_family = AF_ATMPVC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) pvc.sap_addr.itf = vcc->dev->number;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) pvc.sap_addr.vpi = vcc->vpi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) pvc.sap_addr.vci = vcc->vci;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) return copy_to_user(optval, &pvc, sizeof(pvc)) ? -EFAULT : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) int register_atmdevice_notifier(struct notifier_block *nb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) return atomic_notifier_chain_register(&atm_dev_notify_chain, nb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) EXPORT_SYMBOL_GPL(register_atmdevice_notifier);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) void unregister_atmdevice_notifier(struct notifier_block *nb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) atomic_notifier_chain_unregister(&atm_dev_notify_chain, nb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) EXPORT_SYMBOL_GPL(unregister_atmdevice_notifier);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) static int __init atm_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) error = proto_register(&vcc_proto, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) if (error < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) error = atmpvc_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) if (error < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) pr_err("atmpvc_init() failed with %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) goto out_unregister_vcc_proto;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) error = atmsvc_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) if (error < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) pr_err("atmsvc_init() failed with %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) goto out_atmpvc_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) error = atm_proc_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) if (error < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) pr_err("atm_proc_init() failed with %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) goto out_atmsvc_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) error = atm_sysfs_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) if (error < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) pr_err("atm_sysfs_init() failed with %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) goto out_atmproc_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) out_atmproc_exit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) atm_proc_exit();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) out_atmsvc_exit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) atmsvc_exit();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) out_atmpvc_exit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) atmsvc_exit();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) out_unregister_vcc_proto:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) proto_unregister(&vcc_proto);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) static void __exit atm_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) atm_proc_exit();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) atm_sysfs_exit();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) atmsvc_exit();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) atmpvc_exit();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) proto_unregister(&vcc_proto);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) subsys_initcall(atm_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) module_exit(atm_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) MODULE_ALIAS_NETPROTO(PF_ATMPVC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) MODULE_ALIAS_NETPROTO(PF_ATMSVC);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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