Lines Matching refs:sk
158 bool sk_ns_capable(const struct sock *sk, in sk_ns_capable() argument
161 return file_ns_capable(sk->sk_socket->file, user_ns, cap) && in sk_ns_capable()
175 bool sk_capable(const struct sock *sk, int cap) in sk_capable() argument
177 return sk_ns_capable(sk, &init_user_ns, cap); in sk_capable()
190 bool sk_net_capable(const struct sock *sk, int cap) in sk_net_capable() argument
192 return sk_ns_capable(sk, sock_net(sk)->user_ns, cap); in sk_net_capable()
341 void sk_set_memalloc(struct sock *sk) in sk_set_memalloc() argument
343 sock_set_flag(sk, SOCK_MEMALLOC); in sk_set_memalloc()
344 sk->sk_allocation |= __GFP_MEMALLOC; in sk_set_memalloc()
349 void sk_clear_memalloc(struct sock *sk) in sk_clear_memalloc() argument
351 sock_reset_flag(sk, SOCK_MEMALLOC); in sk_clear_memalloc()
352 sk->sk_allocation &= ~__GFP_MEMALLOC; in sk_clear_memalloc()
362 sk_mem_reclaim(sk); in sk_clear_memalloc()
366 int __sk_backlog_rcv(struct sock *sk, struct sk_buff *skb) in __sk_backlog_rcv() argument
372 BUG_ON(!sock_flag(sk, SOCK_MEMALLOC)); in __sk_backlog_rcv()
375 ret = sk->sk_backlog_rcv(sk, skb); in __sk_backlog_rcv()
424 static void sock_disable_timestamp(struct sock *sk, unsigned long flags) in sock_disable_timestamp() argument
426 if (sk->sk_flags & flags) { in sock_disable_timestamp()
427 sk->sk_flags &= ~flags; in sock_disable_timestamp()
428 if (!(sk->sk_flags & SK_FLAGS_TIMESTAMP)) in sock_disable_timestamp()
434 int sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb) in sock_queue_rcv_skb() argument
438 struct sk_buff_head *list = &sk->sk_receive_queue; in sock_queue_rcv_skb()
440 if (atomic_read(&sk->sk_rmem_alloc) >= sk->sk_rcvbuf) { in sock_queue_rcv_skb()
441 atomic_inc(&sk->sk_drops); in sock_queue_rcv_skb()
442 trace_sock_rcvqueue_full(sk, skb); in sock_queue_rcv_skb()
446 err = sk_filter(sk, skb); in sock_queue_rcv_skb()
450 if (!sk_rmem_schedule(sk, skb, skb->truesize)) { in sock_queue_rcv_skb()
451 atomic_inc(&sk->sk_drops); in sock_queue_rcv_skb()
456 skb_set_owner_r(skb, sk); in sock_queue_rcv_skb()
464 sock_skb_set_dropcount(sk, skb); in sock_queue_rcv_skb()
468 if (!sock_flag(sk, SOCK_DEAD)) in sock_queue_rcv_skb()
469 sk->sk_data_ready(sk); in sock_queue_rcv_skb()
474 int sk_receive_skb(struct sock *sk, struct sk_buff *skb, const int nested) in sk_receive_skb() argument
478 if (sk_filter(sk, skb)) in sk_receive_skb()
483 if (sk_rcvqueues_full(sk, sk->sk_rcvbuf)) { in sk_receive_skb()
484 atomic_inc(&sk->sk_drops); in sk_receive_skb()
488 bh_lock_sock_nested(sk); in sk_receive_skb()
490 bh_lock_sock(sk); in sk_receive_skb()
491 if (!sock_owned_by_user(sk)) { in sk_receive_skb()
495 mutex_acquire(&sk->sk_lock.dep_map, 0, 1, _RET_IP_); in sk_receive_skb()
497 rc = sk_backlog_rcv(sk, skb); in sk_receive_skb()
499 mutex_release(&sk->sk_lock.dep_map, 1, _RET_IP_); in sk_receive_skb()
500 } else if (sk_add_backlog(sk, skb, sk->sk_rcvbuf)) { in sk_receive_skb()
501 bh_unlock_sock(sk); in sk_receive_skb()
502 atomic_inc(&sk->sk_drops); in sk_receive_skb()
506 bh_unlock_sock(sk); in sk_receive_skb()
508 sock_put(sk); in sk_receive_skb()
516 struct dst_entry *__sk_dst_check(struct sock *sk, u32 cookie) in __sk_dst_check() argument
518 struct dst_entry *dst = __sk_dst_get(sk); in __sk_dst_check()
521 sk_tx_queue_clear(sk); in __sk_dst_check()
522 RCU_INIT_POINTER(sk->sk_dst_cache, NULL); in __sk_dst_check()
531 struct dst_entry *sk_dst_check(struct sock *sk, u32 cookie) in sk_dst_check() argument
533 struct dst_entry *dst = sk_dst_get(sk); in sk_dst_check()
536 sk_dst_reset(sk); in sk_dst_check()
545 static int sock_setbindtodevice(struct sock *sk, char __user *optval, in sock_setbindtodevice() argument
550 struct net *net = sock_net(sk); in sock_setbindtodevice()
590 lock_sock(sk); in sock_setbindtodevice()
591 sk->sk_bound_dev_if = index; in sock_setbindtodevice()
592 sk_dst_reset(sk); in sock_setbindtodevice()
593 release_sock(sk); in sock_setbindtodevice()
603 static int sock_getbindtodevice(struct sock *sk, char __user *optval, in sock_getbindtodevice() argument
608 struct net *net = sock_net(sk); in sock_getbindtodevice()
611 if (sk->sk_bound_dev_if == 0) { in sock_getbindtodevice()
620 ret = netdev_get_name(net, devname, sk->sk_bound_dev_if); in sock_getbindtodevice()
643 static inline void sock_valbool_flag(struct sock *sk, int bit, int valbool) in sock_valbool_flag() argument
646 sock_set_flag(sk, bit); in sock_valbool_flag()
648 sock_reset_flag(sk, bit); in sock_valbool_flag()
651 bool sk_mc_loop(struct sock *sk) in sk_mc_loop() argument
655 if (!sk) in sk_mc_loop()
657 switch (sk->sk_family) { in sk_mc_loop()
659 return inet_sk(sk)->mc_loop; in sk_mc_loop()
662 return inet6_sk(sk)->mc_loop; in sk_mc_loop()
678 struct sock *sk = sock->sk; in sock_setsockopt() local
689 return sock_setbindtodevice(sk, optval, optlen); in sock_setsockopt()
699 lock_sock(sk); in sock_setsockopt()
706 sock_valbool_flag(sk, SOCK_DBG, valbool); in sock_setsockopt()
709 sk->sk_reuse = (valbool ? SK_CAN_REUSE : SK_NO_REUSE); in sock_setsockopt()
712 sk->sk_reuseport = valbool; in sock_setsockopt()
721 sock_valbool_flag(sk, SOCK_LOCALROUTE, valbool); in sock_setsockopt()
724 sock_valbool_flag(sk, SOCK_BROADCAST, valbool); in sock_setsockopt()
734 sk->sk_userlocks |= SOCK_SNDBUF_LOCK; in sock_setsockopt()
735 sk->sk_sndbuf = max_t(u32, val * 2, SOCK_MIN_SNDBUF); in sock_setsockopt()
737 sk->sk_write_space(sk); in sock_setsockopt()
755 sk->sk_userlocks |= SOCK_RCVBUF_LOCK; in sock_setsockopt()
771 sk->sk_rcvbuf = max_t(u32, val * 2, SOCK_MIN_RCVBUF); in sock_setsockopt()
783 if (sk->sk_protocol == IPPROTO_TCP && in sock_setsockopt()
784 sk->sk_type == SOCK_STREAM) in sock_setsockopt()
785 tcp_set_keepalive(sk, valbool); in sock_setsockopt()
787 sock_valbool_flag(sk, SOCK_KEEPOPEN, valbool); in sock_setsockopt()
791 sock_valbool_flag(sk, SOCK_URGINLINE, valbool); in sock_setsockopt()
795 sk->sk_no_check_tx = valbool; in sock_setsockopt()
800 ns_capable(sock_net(sk)->user_ns, CAP_NET_ADMIN)) in sock_setsockopt()
801 sk->sk_priority = val; in sock_setsockopt()
816 sock_reset_flag(sk, SOCK_LINGER); in sock_setsockopt()
820 sk->sk_lingertime = MAX_SCHEDULE_TIMEOUT; in sock_setsockopt()
823 sk->sk_lingertime = (unsigned int)ling.l_linger * HZ; in sock_setsockopt()
824 sock_set_flag(sk, SOCK_LINGER); in sock_setsockopt()
843 sock_reset_flag(sk, SOCK_RCVTSTAMPNS); in sock_setsockopt()
845 sock_set_flag(sk, SOCK_RCVTSTAMPNS); in sock_setsockopt()
846 sock_set_flag(sk, SOCK_RCVTSTAMP); in sock_setsockopt()
847 sock_enable_timestamp(sk, SOCK_TIMESTAMP); in sock_setsockopt()
849 sock_reset_flag(sk, SOCK_RCVTSTAMP); in sock_setsockopt()
850 sock_reset_flag(sk, SOCK_RCVTSTAMPNS); in sock_setsockopt()
861 !(sk->sk_tsflags & SOF_TIMESTAMPING_OPT_ID)) { in sock_setsockopt()
862 if (sk->sk_protocol == IPPROTO_TCP && in sock_setsockopt()
863 sk->sk_type == SOCK_STREAM) { in sock_setsockopt()
864 if (sk->sk_state != TCP_ESTABLISHED) { in sock_setsockopt()
868 sk->sk_tskey = tcp_sk(sk)->snd_una; in sock_setsockopt()
870 sk->sk_tskey = 0; in sock_setsockopt()
873 sk->sk_tsflags = val; in sock_setsockopt()
875 sock_enable_timestamp(sk, in sock_setsockopt()
878 sock_disable_timestamp(sk, in sock_setsockopt()
885 sk->sk_rcvlowat = val ? : 1; in sock_setsockopt()
889 ret = sock_set_timeout(&sk->sk_rcvtimeo, optval, optlen); in sock_setsockopt()
893 ret = sock_set_timeout(&sk->sk_sndtimeo, optval, optlen); in sock_setsockopt()
905 ret = sk_attach_filter(&fprog, sk); in sock_setsockopt()
918 ret = sk_attach_bpf(ufd, sk); in sock_setsockopt()
923 ret = sk_detach_filter(sk); in sock_setsockopt()
927 if (sock_flag(sk, SOCK_FILTER_LOCKED) && !valbool) in sock_setsockopt()
930 sock_valbool_flag(sk, SOCK_FILTER_LOCKED, valbool); in sock_setsockopt()
940 if (!ns_capable(sock_net(sk)->user_ns, CAP_NET_ADMIN)) in sock_setsockopt()
943 sk->sk_mark = val; in sock_setsockopt()
947 sock_valbool_flag(sk, SOCK_RXQ_OVFL, valbool); in sock_setsockopt()
951 sock_valbool_flag(sk, SOCK_WIFI_STATUS, valbool); in sock_setsockopt()
956 ret = sock->ops->set_peek_off(sk, val); in sock_setsockopt()
962 sock_valbool_flag(sk, SOCK_NOFCS, valbool); in sock_setsockopt()
966 sock_valbool_flag(sk, SOCK_SELECT_ERR_QUEUE, valbool); in sock_setsockopt()
972 if ((val > sk->sk_ll_usec) && !capable(CAP_NET_ADMIN)) in sock_setsockopt()
978 sk->sk_ll_usec = val; in sock_setsockopt()
984 sk->sk_max_pacing_rate = val; in sock_setsockopt()
985 sk->sk_pacing_rate = min(sk->sk_pacing_rate, in sock_setsockopt()
986 sk->sk_max_pacing_rate); in sock_setsockopt()
993 release_sock(sk); in sock_setsockopt()
1015 struct sock *sk = sock->sk; in sock_getsockopt() local
1035 v.val = sock_flag(sk, SOCK_DBG); in sock_getsockopt()
1039 v.val = sock_flag(sk, SOCK_LOCALROUTE); in sock_getsockopt()
1043 v.val = sock_flag(sk, SOCK_BROADCAST); in sock_getsockopt()
1047 v.val = sk->sk_sndbuf; in sock_getsockopt()
1051 v.val = sk->sk_rcvbuf; in sock_getsockopt()
1055 v.val = sk->sk_reuse; in sock_getsockopt()
1059 v.val = sk->sk_reuseport; in sock_getsockopt()
1063 v.val = sock_flag(sk, SOCK_KEEPOPEN); in sock_getsockopt()
1067 v.val = sk->sk_type; in sock_getsockopt()
1071 v.val = sk->sk_protocol; in sock_getsockopt()
1075 v.val = sk->sk_family; in sock_getsockopt()
1079 v.val = -sock_error(sk); in sock_getsockopt()
1081 v.val = xchg(&sk->sk_err_soft, 0); in sock_getsockopt()
1085 v.val = sock_flag(sk, SOCK_URGINLINE); in sock_getsockopt()
1089 v.val = sk->sk_no_check_tx; in sock_getsockopt()
1093 v.val = sk->sk_priority; in sock_getsockopt()
1098 v.ling.l_onoff = sock_flag(sk, SOCK_LINGER); in sock_getsockopt()
1099 v.ling.l_linger = sk->sk_lingertime / HZ; in sock_getsockopt()
1107 v.val = sock_flag(sk, SOCK_RCVTSTAMP) && in sock_getsockopt()
1108 !sock_flag(sk, SOCK_RCVTSTAMPNS); in sock_getsockopt()
1112 v.val = sock_flag(sk, SOCK_RCVTSTAMPNS); in sock_getsockopt()
1116 v.val = sk->sk_tsflags; in sock_getsockopt()
1121 if (sk->sk_rcvtimeo == MAX_SCHEDULE_TIMEOUT) { in sock_getsockopt()
1125 v.tm.tv_sec = sk->sk_rcvtimeo / HZ; in sock_getsockopt()
1126 v.tm.tv_usec = ((sk->sk_rcvtimeo % HZ) * 1000000) / HZ; in sock_getsockopt()
1132 if (sk->sk_sndtimeo == MAX_SCHEDULE_TIMEOUT) { in sock_getsockopt()
1136 v.tm.tv_sec = sk->sk_sndtimeo / HZ; in sock_getsockopt()
1137 v.tm.tv_usec = ((sk->sk_sndtimeo % HZ) * 1000000) / HZ; in sock_getsockopt()
1142 v.val = sk->sk_rcvlowat; in sock_getsockopt()
1158 cred_to_ucred(sk->sk_peer_pid, sk->sk_peer_cred, &peercred); in sock_getsockopt()
1181 v.val = sk->sk_state == TCP_LISTEN; in sock_getsockopt()
1192 v.val = sk->sk_mark; in sock_getsockopt()
1196 v.val = sock_flag(sk, SOCK_RXQ_OVFL); in sock_getsockopt()
1200 v.val = sock_flag(sk, SOCK_WIFI_STATUS); in sock_getsockopt()
1207 v.val = sk->sk_peek_off; in sock_getsockopt()
1210 v.val = sock_flag(sk, SOCK_NOFCS); in sock_getsockopt()
1214 return sock_getbindtodevice(sk, optval, optlen, len); in sock_getsockopt()
1217 len = sk_get_filter(sk, (struct sock_filter __user *)optval, len); in sock_getsockopt()
1224 v.val = sock_flag(sk, SOCK_FILTER_LOCKED); in sock_getsockopt()
1232 v.val = sock_flag(sk, SOCK_SELECT_ERR_QUEUE); in sock_getsockopt()
1237 v.val = sk->sk_ll_usec; in sock_getsockopt()
1242 v.val = sk->sk_max_pacing_rate; in sock_getsockopt()
1246 v.val = sk->sk_incoming_cpu; in sock_getsockopt()
1271 static inline void sock_lock_init(struct sock *sk) in sock_lock_init() argument
1273 sock_lock_init_class_and_name(sk, in sock_lock_init()
1274 af_family_slock_key_strings[sk->sk_family], in sock_lock_init()
1275 af_family_slock_keys + sk->sk_family, in sock_lock_init()
1276 af_family_key_strings[sk->sk_family], in sock_lock_init()
1277 af_family_keys + sk->sk_family); in sock_lock_init()
1301 void sk_prot_clear_portaddr_nulls(struct sock *sk, int size) in sk_prot_clear_portaddr_nulls() argument
1311 memset((char *)sk, 0, nulls1); in sk_prot_clear_portaddr_nulls()
1312 memset((char *)sk + nulls1 + sizeof(void *), 0, in sk_prot_clear_portaddr_nulls()
1314 memset((char *)sk + nulls2 + sizeof(void *), 0, in sk_prot_clear_portaddr_nulls()
1322 struct sock *sk; in sk_prot_alloc() local
1327 sk = kmem_cache_alloc(slab, priority & ~__GFP_ZERO); in sk_prot_alloc()
1328 if (!sk) in sk_prot_alloc()
1329 return sk; in sk_prot_alloc()
1332 prot->clear_sk(sk, prot->obj_size); in sk_prot_alloc()
1334 sk_prot_clear_nulls(sk, prot->obj_size); in sk_prot_alloc()
1337 sk = kmalloc(prot->obj_size, priority); in sk_prot_alloc()
1339 if (sk != NULL) { in sk_prot_alloc()
1340 kmemcheck_annotate_bitfield(sk, flags); in sk_prot_alloc()
1342 if (security_sk_alloc(sk, family, priority)) in sk_prot_alloc()
1347 sk_tx_queue_clear(sk); in sk_prot_alloc()
1350 return sk; in sk_prot_alloc()
1353 security_sk_free(sk); in sk_prot_alloc()
1356 kmem_cache_free(slab, sk); in sk_prot_alloc()
1358 kfree(sk); in sk_prot_alloc()
1362 static void sk_prot_free(struct proto *prot, struct sock *sk) in sk_prot_free() argument
1370 security_sk_free(sk); in sk_prot_free()
1372 kmem_cache_free(slab, sk); in sk_prot_free()
1374 kfree(sk); in sk_prot_free()
1379 void sock_update_netprioidx(struct sock *sk) in sock_update_netprioidx() argument
1384 sk->sk_cgrp_prioidx = task_netprioidx(current); in sock_update_netprioidx()
1399 struct sock *sk; in sk_alloc() local
1401 sk = sk_prot_alloc(prot, priority | __GFP_ZERO, family); in sk_alloc()
1402 if (sk) { in sk_alloc()
1403 sk->sk_family = family; in sk_alloc()
1408 sk->sk_prot = sk->sk_prot_creator = prot; in sk_alloc()
1409 sock_lock_init(sk); in sk_alloc()
1410 sock_net_set(sk, get_net(net)); in sk_alloc()
1411 atomic_set(&sk->sk_wmem_alloc, 1); in sk_alloc()
1413 sock_update_classid(sk); in sk_alloc()
1414 sock_update_netprioidx(sk); in sk_alloc()
1417 return sk; in sk_alloc()
1421 static void __sk_free(struct sock *sk) in __sk_free() argument
1425 if (sk->sk_destruct) in __sk_free()
1426 sk->sk_destruct(sk); in __sk_free()
1428 filter = rcu_dereference_check(sk->sk_filter, in __sk_free()
1429 atomic_read(&sk->sk_wmem_alloc) == 0); in __sk_free()
1431 sk_filter_uncharge(sk, filter); in __sk_free()
1432 RCU_INIT_POINTER(sk->sk_filter, NULL); in __sk_free()
1435 sock_disable_timestamp(sk, SK_FLAGS_TIMESTAMP); in __sk_free()
1437 if (atomic_read(&sk->sk_omem_alloc)) in __sk_free()
1439 __func__, atomic_read(&sk->sk_omem_alloc)); in __sk_free()
1441 if (sk->sk_peer_cred) in __sk_free()
1442 put_cred(sk->sk_peer_cred); in __sk_free()
1443 put_pid(sk->sk_peer_pid); in __sk_free()
1444 put_net(sock_net(sk)); in __sk_free()
1445 sk_prot_free(sk->sk_prot_creator, sk); in __sk_free()
1448 void sk_free(struct sock *sk) in sk_free() argument
1455 if (atomic_dec_and_test(&sk->sk_wmem_alloc)) in sk_free()
1456 __sk_free(sk); in sk_free()
1467 void sk_release_kernel(struct sock *sk) in sk_release_kernel() argument
1469 if (sk == NULL || sk->sk_socket == NULL) in sk_release_kernel()
1472 sock_hold(sk); in sk_release_kernel()
1473 sock_release(sk->sk_socket); in sk_release_kernel()
1474 sock_net_set(sk, get_net(&init_net)); in sk_release_kernel()
1475 sock_put(sk); in sk_release_kernel()
1479 static void sk_update_clone(const struct sock *sk, struct sock *newsk) in sk_update_clone() argument
1481 if (mem_cgroup_sockets_enabled && sk->sk_cgrp) in sk_update_clone()
1492 struct sock *sk_clone_lock(const struct sock *sk, const gfp_t priority) in sk_clone_lock() argument
1497 newsk = sk_prot_alloc(sk->sk_prot, priority, sk->sk_family); in sk_clone_lock()
1501 sock_copy(newsk, sk); in sk_clone_lock()
1530 newsk->sk_userlocks = sk->sk_userlocks & ~SOCK_BINDPORT_LOCK; in sk_clone_lock()
1579 sk_update_clone(sk, newsk); in sk_clone_lock()
1592 void sk_setup_caps(struct sock *sk, struct dst_entry *dst) in sk_setup_caps() argument
1594 __sk_dst_set(sk, dst); in sk_setup_caps()
1595 sk->sk_route_caps = dst->dev->features; in sk_setup_caps()
1596 if (sk->sk_route_caps & NETIF_F_GSO) in sk_setup_caps()
1597 sk->sk_route_caps |= NETIF_F_GSO_SOFTWARE; in sk_setup_caps()
1598 sk->sk_route_caps &= ~sk->sk_route_nocaps; in sk_setup_caps()
1599 if (sk_can_gso(sk)) { in sk_setup_caps()
1601 sk->sk_route_caps &= ~NETIF_F_GSO_MASK; in sk_setup_caps()
1603 sk->sk_route_caps |= NETIF_F_SG | NETIF_F_HW_CSUM; in sk_setup_caps()
1604 sk->sk_gso_max_size = dst->dev->gso_max_size; in sk_setup_caps()
1605 sk->sk_gso_max_segs = dst->dev->gso_max_segs; in sk_setup_caps()
1621 struct sock *sk = skb->sk; in sock_wfree() local
1624 if (!sock_flag(sk, SOCK_USE_WRITE_QUEUE)) { in sock_wfree()
1629 atomic_sub(len - 1, &sk->sk_wmem_alloc); in sock_wfree()
1630 sk->sk_write_space(sk); in sock_wfree()
1637 if (atomic_sub_and_test(len, &sk->sk_wmem_alloc)) in sock_wfree()
1638 __sk_free(sk); in sock_wfree()
1653 atomic_sub(skb->truesize - 1, &skb->sk->sk_wmem_alloc); in skb_orphan_partial()
1666 struct sock *sk = skb->sk; in sock_rfree() local
1669 atomic_sub(len, &sk->sk_rmem_alloc); in sock_rfree()
1670 sk_mem_uncharge(sk, len); in sock_rfree()
1680 sock_put(skb->sk); in sock_efree()
1684 kuid_t sock_i_uid(struct sock *sk) in sock_i_uid() argument
1688 read_lock_bh(&sk->sk_callback_lock); in sock_i_uid()
1689 uid = sk->sk_socket ? SOCK_INODE(sk->sk_socket)->i_uid : GLOBAL_ROOT_UID; in sock_i_uid()
1690 read_unlock_bh(&sk->sk_callback_lock); in sock_i_uid()
1695 unsigned long sock_i_ino(struct sock *sk) in sock_i_ino() argument
1699 read_lock_bh(&sk->sk_callback_lock); in sock_i_ino()
1700 ino = sk->sk_socket ? SOCK_INODE(sk->sk_socket)->i_ino : 0; in sock_i_ino()
1701 read_unlock_bh(&sk->sk_callback_lock); in sock_i_ino()
1709 struct sk_buff *sock_wmalloc(struct sock *sk, unsigned long size, int force, in sock_wmalloc() argument
1712 if (force || atomic_read(&sk->sk_wmem_alloc) < sk->sk_sndbuf) { in sock_wmalloc()
1715 skb_set_owner_w(skb, sk); in sock_wmalloc()
1726 void *sock_kmalloc(struct sock *sk, int size, gfp_t priority) in sock_kmalloc() argument
1729 atomic_read(&sk->sk_omem_alloc) + size < sysctl_optmem_max) { in sock_kmalloc()
1734 atomic_add(size, &sk->sk_omem_alloc); in sock_kmalloc()
1738 atomic_sub(size, &sk->sk_omem_alloc); in sock_kmalloc()
1748 static inline void __sock_kfree_s(struct sock *sk, void *mem, int size, in __sock_kfree_s() argument
1757 atomic_sub(size, &sk->sk_omem_alloc); in __sock_kfree_s()
1760 void sock_kfree_s(struct sock *sk, void *mem, int size) in sock_kfree_s() argument
1762 __sock_kfree_s(sk, mem, size, false); in sock_kfree_s()
1766 void sock_kzfree_s(struct sock *sk, void *mem, int size) in sock_kzfree_s() argument
1768 __sock_kfree_s(sk, mem, size, true); in sock_kzfree_s()
1775 static long sock_wait_for_wmem(struct sock *sk, long timeo) in sock_wait_for_wmem() argument
1779 clear_bit(SOCK_ASYNC_NOSPACE, &sk->sk_socket->flags); in sock_wait_for_wmem()
1785 set_bit(SOCK_NOSPACE, &sk->sk_socket->flags); in sock_wait_for_wmem()
1786 prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE); in sock_wait_for_wmem()
1787 if (atomic_read(&sk->sk_wmem_alloc) < sk->sk_sndbuf) in sock_wait_for_wmem()
1789 if (sk->sk_shutdown & SEND_SHUTDOWN) in sock_wait_for_wmem()
1791 if (sk->sk_err) in sock_wait_for_wmem()
1795 finish_wait(sk_sleep(sk), &wait); in sock_wait_for_wmem()
1804 struct sk_buff *sock_alloc_send_pskb(struct sock *sk, unsigned long header_len, in sock_alloc_send_pskb() argument
1812 timeo = sock_sndtimeo(sk, noblock); in sock_alloc_send_pskb()
1814 err = sock_error(sk); in sock_alloc_send_pskb()
1819 if (sk->sk_shutdown & SEND_SHUTDOWN) in sock_alloc_send_pskb()
1822 if (sk_wmem_alloc_get(sk) < sk->sk_sndbuf) in sock_alloc_send_pskb()
1825 set_bit(SOCK_ASYNC_NOSPACE, &sk->sk_socket->flags); in sock_alloc_send_pskb()
1826 set_bit(SOCK_NOSPACE, &sk->sk_socket->flags); in sock_alloc_send_pskb()
1832 timeo = sock_wait_for_wmem(sk, timeo); in sock_alloc_send_pskb()
1835 errcode, sk->sk_allocation); in sock_alloc_send_pskb()
1837 skb_set_owner_w(skb, sk); in sock_alloc_send_pskb()
1848 struct sk_buff *sock_alloc_send_skb(struct sock *sk, unsigned long size, in sock_alloc_send_skb() argument
1851 return sock_alloc_send_pskb(sk, size, 0, noblock, errcode, 0); in sock_alloc_send_skb()
1899 bool sk_page_frag_refill(struct sock *sk, struct page_frag *pfrag) in sk_page_frag_refill() argument
1901 if (likely(skb_page_frag_refill(32U, pfrag, sk->sk_allocation))) in sk_page_frag_refill()
1904 sk_enter_memory_pressure(sk); in sk_page_frag_refill()
1905 sk_stream_moderate_sndbuf(sk); in sk_page_frag_refill()
1910 static void __lock_sock(struct sock *sk) in __lock_sock() argument
1911 __releases(&sk->sk_lock.slock) in __lock_sock()
1912 __acquires(&sk->sk_lock.slock) in __lock_sock()
1917 prepare_to_wait_exclusive(&sk->sk_lock.wq, &wait, in __lock_sock()
1919 spin_unlock_bh(&sk->sk_lock.slock); in __lock_sock()
1921 spin_lock_bh(&sk->sk_lock.slock); in __lock_sock()
1922 if (!sock_owned_by_user(sk)) in __lock_sock()
1925 finish_wait(&sk->sk_lock.wq, &wait); in __lock_sock()
1928 static void __release_sock(struct sock *sk) in __release_sock() argument
1929 __releases(&sk->sk_lock.slock) in __release_sock()
1930 __acquires(&sk->sk_lock.slock) in __release_sock()
1932 struct sk_buff *skb = sk->sk_backlog.head; in __release_sock()
1935 sk->sk_backlog.head = sk->sk_backlog.tail = NULL; in __release_sock()
1936 bh_unlock_sock(sk); in __release_sock()
1944 sk_backlog_rcv(sk, skb); in __release_sock()
1957 bh_lock_sock(sk); in __release_sock()
1958 } while ((skb = sk->sk_backlog.head) != NULL); in __release_sock()
1964 sk->sk_backlog.len = 0; in __release_sock()
1977 int sk_wait_data(struct sock *sk, long *timeo) in sk_wait_data() argument
1982 prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE); in sk_wait_data()
1983 set_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags); in sk_wait_data()
1984 rc = sk_wait_event(sk, timeo, !skb_queue_empty(&sk->sk_receive_queue)); in sk_wait_data()
1985 clear_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags); in sk_wait_data()
1986 finish_wait(sk_sleep(sk), &wait); in sk_wait_data()
2001 int __sk_mem_schedule(struct sock *sk, int size, int kind) in __sk_mem_schedule() argument
2003 struct proto *prot = sk->sk_prot; in __sk_mem_schedule()
2008 sk->sk_forward_alloc += amt * SK_MEM_QUANTUM; in __sk_mem_schedule()
2010 allocated = sk_memory_allocated_add(sk, amt, &parent_status); in __sk_mem_schedule()
2014 allocated <= sk_prot_mem_limits(sk, 0)) { in __sk_mem_schedule()
2015 sk_leave_memory_pressure(sk); in __sk_mem_schedule()
2021 allocated > sk_prot_mem_limits(sk, 1)) in __sk_mem_schedule()
2022 sk_enter_memory_pressure(sk); in __sk_mem_schedule()
2026 (allocated > sk_prot_mem_limits(sk, 2))) in __sk_mem_schedule()
2031 if (atomic_read(&sk->sk_rmem_alloc) < prot->sysctl_rmem[0]) in __sk_mem_schedule()
2035 if (sk->sk_type == SOCK_STREAM) { in __sk_mem_schedule()
2036 if (sk->sk_wmem_queued < prot->sysctl_wmem[0]) in __sk_mem_schedule()
2038 } else if (atomic_read(&sk->sk_wmem_alloc) < in __sk_mem_schedule()
2043 if (sk_has_memory_pressure(sk)) { in __sk_mem_schedule()
2046 if (!sk_under_memory_pressure(sk)) in __sk_mem_schedule()
2048 alloc = sk_sockets_allocated_read_positive(sk); in __sk_mem_schedule()
2049 if (sk_prot_mem_limits(sk, 2) > alloc * in __sk_mem_schedule()
2050 sk_mem_pages(sk->sk_wmem_queued + in __sk_mem_schedule()
2051 atomic_read(&sk->sk_rmem_alloc) + in __sk_mem_schedule()
2052 sk->sk_forward_alloc)) in __sk_mem_schedule()
2058 if (kind == SK_MEM_SEND && sk->sk_type == SOCK_STREAM) { in __sk_mem_schedule()
2059 sk_stream_moderate_sndbuf(sk); in __sk_mem_schedule()
2064 if (sk->sk_wmem_queued + size >= sk->sk_sndbuf) in __sk_mem_schedule()
2068 trace_sock_exceed_buf_limit(sk, prot, allocated); in __sk_mem_schedule()
2071 sk->sk_forward_alloc -= amt * SK_MEM_QUANTUM; in __sk_mem_schedule()
2073 sk_memory_allocated_sub(sk, amt); in __sk_mem_schedule()
2083 void __sk_mem_reclaim(struct sock *sk) in __sk_mem_reclaim() argument
2085 sk_memory_allocated_sub(sk, in __sk_mem_reclaim()
2086 sk->sk_forward_alloc >> SK_MEM_QUANTUM_SHIFT); in __sk_mem_reclaim()
2087 sk->sk_forward_alloc &= SK_MEM_QUANTUM - 1; in __sk_mem_reclaim()
2089 if (sk_under_memory_pressure(sk) && in __sk_mem_reclaim()
2090 (sk_memory_allocated(sk) < sk_prot_mem_limits(sk, 0))) in __sk_mem_reclaim()
2091 sk_leave_memory_pressure(sk); in __sk_mem_reclaim()
2211 static void sock_def_wakeup(struct sock *sk) in sock_def_wakeup() argument
2216 wq = rcu_dereference(sk->sk_wq); in sock_def_wakeup()
2222 static void sock_def_error_report(struct sock *sk) in sock_def_error_report() argument
2227 wq = rcu_dereference(sk->sk_wq); in sock_def_error_report()
2230 sk_wake_async(sk, SOCK_WAKE_IO, POLL_ERR); in sock_def_error_report()
2234 static void sock_def_readable(struct sock *sk) in sock_def_readable() argument
2239 wq = rcu_dereference(sk->sk_wq); in sock_def_readable()
2243 sk_wake_async(sk, SOCK_WAKE_WAITD, POLL_IN); in sock_def_readable()
2247 static void sock_def_write_space(struct sock *sk) in sock_def_write_space() argument
2256 if ((atomic_read(&sk->sk_wmem_alloc) << 1) <= sk->sk_sndbuf) { in sock_def_write_space()
2257 wq = rcu_dereference(sk->sk_wq); in sock_def_write_space()
2263 if (sock_writeable(sk)) in sock_def_write_space()
2264 sk_wake_async(sk, SOCK_WAKE_SPACE, POLL_OUT); in sock_def_write_space()
2270 static void sock_def_destruct(struct sock *sk) in sock_def_destruct() argument
2272 kfree(sk->sk_protinfo); in sock_def_destruct()
2275 void sk_send_sigurg(struct sock *sk) in sk_send_sigurg() argument
2277 if (sk->sk_socket && sk->sk_socket->file) in sk_send_sigurg()
2278 if (send_sigurg(&sk->sk_socket->file->f_owner)) in sk_send_sigurg()
2279 sk_wake_async(sk, SOCK_WAKE_URG, POLL_PRI); in sk_send_sigurg()
2283 void sk_reset_timer(struct sock *sk, struct timer_list* timer, in sk_reset_timer() argument
2287 sock_hold(sk); in sk_reset_timer()
2291 void sk_stop_timer(struct sock *sk, struct timer_list* timer) in sk_stop_timer() argument
2294 __sock_put(sk); in sk_stop_timer()
2298 void sock_init_data(struct socket *sock, struct sock *sk) in sock_init_data() argument
2300 skb_queue_head_init(&sk->sk_receive_queue); in sock_init_data()
2301 skb_queue_head_init(&sk->sk_write_queue); in sock_init_data()
2302 skb_queue_head_init(&sk->sk_error_queue); in sock_init_data()
2304 sk->sk_send_head = NULL; in sock_init_data()
2306 init_timer(&sk->sk_timer); in sock_init_data()
2308 sk->sk_allocation = GFP_KERNEL; in sock_init_data()
2309 sk->sk_rcvbuf = sysctl_rmem_default; in sock_init_data()
2310 sk->sk_sndbuf = sysctl_wmem_default; in sock_init_data()
2311 sk->sk_state = TCP_CLOSE; in sock_init_data()
2312 sk_set_socket(sk, sock); in sock_init_data()
2314 sock_set_flag(sk, SOCK_ZAPPED); in sock_init_data()
2317 sk->sk_type = sock->type; in sock_init_data()
2318 sk->sk_wq = sock->wq; in sock_init_data()
2319 sock->sk = sk; in sock_init_data()
2321 sk->sk_wq = NULL; in sock_init_data()
2323 spin_lock_init(&sk->sk_dst_lock); in sock_init_data()
2324 rwlock_init(&sk->sk_callback_lock); in sock_init_data()
2325 lockdep_set_class_and_name(&sk->sk_callback_lock, in sock_init_data()
2326 af_callback_keys + sk->sk_family, in sock_init_data()
2327 af_family_clock_key_strings[sk->sk_family]); in sock_init_data()
2329 sk->sk_state_change = sock_def_wakeup; in sock_init_data()
2330 sk->sk_data_ready = sock_def_readable; in sock_init_data()
2331 sk->sk_write_space = sock_def_write_space; in sock_init_data()
2332 sk->sk_error_report = sock_def_error_report; in sock_init_data()
2333 sk->sk_destruct = sock_def_destruct; in sock_init_data()
2335 sk->sk_frag.page = NULL; in sock_init_data()
2336 sk->sk_frag.offset = 0; in sock_init_data()
2337 sk->sk_peek_off = -1; in sock_init_data()
2339 sk->sk_peer_pid = NULL; in sock_init_data()
2340 sk->sk_peer_cred = NULL; in sock_init_data()
2341 sk->sk_write_pending = 0; in sock_init_data()
2342 sk->sk_rcvlowat = 1; in sock_init_data()
2343 sk->sk_rcvtimeo = MAX_SCHEDULE_TIMEOUT; in sock_init_data()
2344 sk->sk_sndtimeo = MAX_SCHEDULE_TIMEOUT; in sock_init_data()
2346 sk->sk_stamp = ktime_set(-1L, 0); in sock_init_data()
2349 sk->sk_napi_id = 0; in sock_init_data()
2350 sk->sk_ll_usec = sysctl_net_busy_read; in sock_init_data()
2353 sk->sk_max_pacing_rate = ~0U; in sock_init_data()
2354 sk->sk_pacing_rate = ~0U; in sock_init_data()
2360 atomic_set(&sk->sk_refcnt, 1); in sock_init_data()
2361 atomic_set(&sk->sk_drops, 0); in sock_init_data()
2365 void lock_sock_nested(struct sock *sk, int subclass) in lock_sock_nested() argument
2368 spin_lock_bh(&sk->sk_lock.slock); in lock_sock_nested()
2369 if (sk->sk_lock.owned) in lock_sock_nested()
2370 __lock_sock(sk); in lock_sock_nested()
2371 sk->sk_lock.owned = 1; in lock_sock_nested()
2372 spin_unlock(&sk->sk_lock.slock); in lock_sock_nested()
2376 mutex_acquire(&sk->sk_lock.dep_map, subclass, 0, _RET_IP_); in lock_sock_nested()
2381 void release_sock(struct sock *sk) in release_sock() argument
2386 mutex_release(&sk->sk_lock.dep_map, 1, _RET_IP_); in release_sock()
2388 spin_lock_bh(&sk->sk_lock.slock); in release_sock()
2389 if (sk->sk_backlog.tail) in release_sock()
2390 __release_sock(sk); in release_sock()
2395 if (sk->sk_prot->release_cb) in release_sock()
2396 sk->sk_prot->release_cb(sk); in release_sock()
2398 sock_release_ownership(sk); in release_sock()
2399 if (waitqueue_active(&sk->sk_lock.wq)) in release_sock()
2400 wake_up(&sk->sk_lock.wq); in release_sock()
2401 spin_unlock_bh(&sk->sk_lock.slock); in release_sock()
2415 bool lock_sock_fast(struct sock *sk) in lock_sock_fast() argument
2418 spin_lock_bh(&sk->sk_lock.slock); in lock_sock_fast()
2420 if (!sk->sk_lock.owned) in lock_sock_fast()
2426 __lock_sock(sk); in lock_sock_fast()
2427 sk->sk_lock.owned = 1; in lock_sock_fast()
2428 spin_unlock(&sk->sk_lock.slock); in lock_sock_fast()
2432 mutex_acquire(&sk->sk_lock.dep_map, 0, 0, _RET_IP_); in lock_sock_fast()
2438 int sock_get_timestamp(struct sock *sk, struct timeval __user *userstamp) in sock_get_timestamp() argument
2441 if (!sock_flag(sk, SOCK_TIMESTAMP)) in sock_get_timestamp()
2442 sock_enable_timestamp(sk, SOCK_TIMESTAMP); in sock_get_timestamp()
2443 tv = ktime_to_timeval(sk->sk_stamp); in sock_get_timestamp()
2447 sk->sk_stamp = ktime_get_real(); in sock_get_timestamp()
2448 tv = ktime_to_timeval(sk->sk_stamp); in sock_get_timestamp()
2454 int sock_get_timestampns(struct sock *sk, struct timespec __user *userstamp) in sock_get_timestampns() argument
2457 if (!sock_flag(sk, SOCK_TIMESTAMP)) in sock_get_timestampns()
2458 sock_enable_timestamp(sk, SOCK_TIMESTAMP); in sock_get_timestampns()
2459 ts = ktime_to_timespec(sk->sk_stamp); in sock_get_timestampns()
2463 sk->sk_stamp = ktime_get_real(); in sock_get_timestampns()
2464 ts = ktime_to_timespec(sk->sk_stamp); in sock_get_timestampns()
2470 void sock_enable_timestamp(struct sock *sk, int flag) in sock_enable_timestamp() argument
2472 if (!sock_flag(sk, flag)) { in sock_enable_timestamp()
2473 unsigned long previous_flags = sk->sk_flags; in sock_enable_timestamp()
2475 sock_set_flag(sk, flag); in sock_enable_timestamp()
2486 int sock_recv_errqueue(struct sock *sk, struct msghdr *msg, int len, in sock_recv_errqueue() argument
2494 skb = sock_dequeue_err_skb(sk); in sock_recv_errqueue()
2507 sock_recv_timestamp(msg, sk, skb); in sock_recv_errqueue()
2532 struct sock *sk = sock->sk; in sock_common_getsockopt() local
2534 return sk->sk_prot->getsockopt(sk, level, optname, optval, optlen); in sock_common_getsockopt()
2542 struct sock *sk = sock->sk; in compat_sock_common_getsockopt() local
2544 if (sk->sk_prot->compat_getsockopt != NULL) in compat_sock_common_getsockopt()
2545 return sk->sk_prot->compat_getsockopt(sk, level, optname, in compat_sock_common_getsockopt()
2547 return sk->sk_prot->getsockopt(sk, level, optname, optval, optlen); in compat_sock_common_getsockopt()
2555 struct sock *sk = sock->sk; in sock_common_recvmsg() local
2559 err = sk->sk_prot->recvmsg(sk, msg, size, flags & MSG_DONTWAIT, in sock_common_recvmsg()
2573 struct sock *sk = sock->sk; in sock_common_setsockopt() local
2575 return sk->sk_prot->setsockopt(sk, level, optname, optval, optlen); in sock_common_setsockopt()
2583 struct sock *sk = sock->sk; in compat_sock_common_setsockopt() local
2585 if (sk->sk_prot->compat_setsockopt != NULL) in compat_sock_common_setsockopt()
2586 return sk->sk_prot->compat_setsockopt(sk, level, optname, in compat_sock_common_setsockopt()
2588 return sk->sk_prot->setsockopt(sk, level, optname, optval, optlen); in compat_sock_common_setsockopt()
2593 void sk_common_release(struct sock *sk) in sk_common_release() argument
2595 if (sk->sk_prot->destroy) in sk_common_release()
2596 sk->sk_prot->destroy(sk); in sk_common_release()
2606 sk->sk_prot->unhash(sk); in sk_common_release()
2620 sock_orphan(sk); in sk_common_release()
2622 xfrm_sk_free_policy(sk); in sk_common_release()
2624 sk_refcnt_debug_release(sk); in sk_common_release()
2626 if (sk->sk_frag.page) { in sk_common_release()
2627 put_page(sk->sk_frag.page); in sk_common_release()
2628 sk->sk_frag.page = NULL; in sk_common_release()
2631 sock_put(sk); in sk_common_release()