Lines Matching refs:msk
33 struct mptcp_sock msk; member
63 struct socket *__mptcp_nmpc_socket(const struct mptcp_sock *msk) in __mptcp_nmpc_socket() argument
65 if (!msk->subflow || READ_ONCE(msk->can_ack)) in __mptcp_nmpc_socket()
68 return msk->subflow; in __mptcp_nmpc_socket()
72 static u64 mptcp_wnd_end(const struct mptcp_sock *msk) in mptcp_wnd_end() argument
74 return READ_ONCE(msk->wnd_end); in mptcp_wnd_end()
101 static int __mptcp_socket_create(struct mptcp_sock *msk) in __mptcp_socket_create() argument
104 struct sock *sk = (struct sock *)msk; in __mptcp_socket_create()
112 msk->first = ssock->sk; in __mptcp_socket_create()
113 msk->subflow = ssock; in __mptcp_socket_create()
115 list_add(&subflow->node, &msk->conn_list); in __mptcp_socket_create()
118 mptcp_sock_graft(msk->first, sk->sk_socket); in __mptcp_socket_create()
154 static bool mptcp_ooo_try_coalesce(struct mptcp_sock *msk, struct sk_buff *to, in mptcp_ooo_try_coalesce() argument
160 return mptcp_try_coalesce((struct sock *)msk, to, from); in mptcp_ooo_try_coalesce()
172 struct mptcp_sock *msk = mptcp_sk(sk); in mptcp_rmem_uncharge() local
175 msk->rmem_fwd_alloc += size; in mptcp_rmem_uncharge()
176 reclaimable = msk->rmem_fwd_alloc - sk_unused_reserved_mem(sk); in mptcp_rmem_uncharge()
205 static void mptcp_data_queue_ofo(struct mptcp_sock *msk, struct sk_buff *skb) in mptcp_data_queue_ofo() argument
207 struct sock *sk = (struct sock *)msk; in mptcp_data_queue_ofo()
214 max_seq = READ_ONCE(msk->rcv_wnd_sent); in mptcp_data_queue_ofo()
216 pr_debug("msk=%p seq=%llx limit=%llx empty=%d", msk, seq, max_seq, in mptcp_data_queue_ofo()
217 RB_EMPTY_ROOT(&msk->out_of_order_queue)); in mptcp_data_queue_ofo()
223 (unsigned long long)msk->rcv_wnd_sent); in mptcp_data_queue_ofo()
228 p = &msk->out_of_order_queue.rb_node; in mptcp_data_queue_ofo()
230 if (RB_EMPTY_ROOT(&msk->out_of_order_queue)) { in mptcp_data_queue_ofo()
232 rb_insert_color(&skb->rbnode, &msk->out_of_order_queue); in mptcp_data_queue_ofo()
233 msk->ooo_last_skb = skb; in mptcp_data_queue_ofo()
240 if (mptcp_ooo_try_coalesce(msk, msk->ooo_last_skb, skb)) { in mptcp_data_queue_ofo()
247 if (!before64(seq, MPTCP_SKB_CB(msk->ooo_last_skb)->end_seq)) { in mptcp_data_queue_ofo()
249 parent = &msk->ooo_last_skb->rbnode; in mptcp_data_queue_ofo()
281 &msk->out_of_order_queue); in mptcp_data_queue_ofo()
286 } else if (mptcp_ooo_try_coalesce(msk, skb1, skb)) { in mptcp_data_queue_ofo()
296 rb_insert_color(&skb->rbnode, &msk->out_of_order_queue); in mptcp_data_queue_ofo()
303 rb_erase(&skb1->rbnode, &msk->out_of_order_queue); in mptcp_data_queue_ofo()
309 msk->ooo_last_skb = skb; in mptcp_data_queue_ofo()
318 struct mptcp_sock *msk = mptcp_sk(sk); in mptcp_rmem_schedule() local
321 if (size < msk->rmem_fwd_alloc) in mptcp_rmem_schedule()
326 msk->rmem_fwd_alloc += amount; in mptcp_rmem_schedule()
329 msk->rmem_fwd_alloc -= amount; in mptcp_rmem_schedule()
338 static bool __mptcp_move_skb(struct mptcp_sock *msk, struct sock *ssk, in __mptcp_move_skb() argument
343 struct sock *sk = (struct sock *)msk; in __mptcp_move_skb()
367 if (MPTCP_SKB_CB(skb)->map_seq == msk->ack_seq) { in __mptcp_move_skb()
369 WRITE_ONCE(msk->ack_seq, msk->ack_seq + copy_len); in __mptcp_move_skb()
377 } else if (after64(MPTCP_SKB_CB(skb)->map_seq, msk->ack_seq)) { in __mptcp_move_skb()
378 mptcp_data_queue_ofo(msk, skb); in __mptcp_move_skb()
414 struct mptcp_sock *msk = mptcp_sk(sk); in mptcp_pending_data_fin_ack() local
416 return !__mptcp_check_fallback(msk) && in mptcp_pending_data_fin_ack()
419 msk->write_seq == READ_ONCE(msk->snd_una); in mptcp_pending_data_fin_ack()
424 struct mptcp_sock *msk = mptcp_sk(sk); in mptcp_check_data_fin_ack() local
428 WRITE_ONCE(msk->snd_data_fin_enable, 0); in mptcp_check_data_fin_ack()
446 struct mptcp_sock *msk = mptcp_sk(sk); in mptcp_pending_data_fin() local
448 if (READ_ONCE(msk->rcv_data_fin) && in mptcp_pending_data_fin()
451 u64 rcv_data_fin_seq = READ_ONCE(msk->rcv_data_fin_seq); in mptcp_pending_data_fin()
453 if (msk->ack_seq == rcv_data_fin_seq) { in mptcp_pending_data_fin()
511 static void mptcp_send_ack(struct mptcp_sock *msk) in mptcp_send_ack() argument
515 mptcp_for_each_subflow(msk, subflow) in mptcp_send_ack()
542 static void mptcp_cleanup_rbuf(struct mptcp_sock *msk) in mptcp_cleanup_rbuf() argument
544 int old_space = READ_ONCE(msk->old_wspace); in mptcp_cleanup_rbuf()
546 struct sock *sk = (struct sock *)msk; in mptcp_cleanup_rbuf()
553 mptcp_for_each_subflow(msk, subflow) { in mptcp_cleanup_rbuf()
563 struct mptcp_sock *msk = mptcp_sk(sk); in mptcp_check_data_fin() local
567 if (__mptcp_check_fallback(msk)) in mptcp_check_data_fin()
584 WRITE_ONCE(msk->ack_seq, msk->ack_seq + 1); in mptcp_check_data_fin()
585 WRITE_ONCE(msk->rcv_data_fin, 0); in mptcp_check_data_fin()
607 mptcp_send_ack(msk); in mptcp_check_data_fin()
613 static bool __mptcp_move_skbs_from_subflow(struct mptcp_sock *msk, in __mptcp_move_skbs_from_subflow() argument
618 struct sock *sk = (struct sock *)msk; in __mptcp_move_skbs_from_subflow()
636 pr_debug("msk=%p ssk=%p", msk, ssk); in __mptcp_move_skbs_from_subflow()
659 if (__mptcp_check_fallback(msk)) { in __mptcp_move_skbs_from_subflow()
681 if (__mptcp_move_skb(msk, ssk, skb, offset, len)) in __mptcp_move_skbs_from_subflow()
706 static bool __mptcp_ofo_queue(struct mptcp_sock *msk) in __mptcp_ofo_queue() argument
708 struct sock *sk = (struct sock *)msk; in __mptcp_ofo_queue()
714 p = rb_first(&msk->out_of_order_queue); in __mptcp_ofo_queue()
715 pr_debug("msk=%p empty=%d", msk, RB_EMPTY_ROOT(&msk->out_of_order_queue)); in __mptcp_ofo_queue()
718 if (after64(MPTCP_SKB_CB(skb)->map_seq, msk->ack_seq)) in __mptcp_ofo_queue()
722 rb_erase(&skb->rbnode, &msk->out_of_order_queue); in __mptcp_ofo_queue()
725 msk->ack_seq))) { in __mptcp_ofo_queue()
733 if (!tail || !mptcp_ooo_try_coalesce(msk, tail, skb)) { in __mptcp_ofo_queue()
734 int delta = msk->ack_seq - MPTCP_SKB_CB(skb)->map_seq; in __mptcp_ofo_queue()
738 MPTCP_SKB_CB(skb)->map_seq, msk->ack_seq, in __mptcp_ofo_queue()
743 msk->ack_seq = end_seq; in __mptcp_ofo_queue()
752 static bool move_skbs_to_msk(struct mptcp_sock *msk, struct sock *ssk) in move_skbs_to_msk() argument
754 struct sock *sk = (struct sock *)msk; in move_skbs_to_msk()
757 __mptcp_move_skbs_from_subflow(msk, ssk, &moved); in move_skbs_to_msk()
758 __mptcp_ofo_queue(msk); in move_skbs_to_msk()
763 set_bit(MPTCP_ERROR_REPORT, &msk->flags); in move_skbs_to_msk()
779 struct mptcp_sock *msk = mptcp_sk(sk); in mptcp_data_ready() local
802 if (move_skbs_to_msk(msk, ssk)) in mptcp_data_ready()
808 static bool mptcp_do_flush_join_list(struct mptcp_sock *msk) in mptcp_do_flush_join_list() argument
813 if (likely(list_empty(&msk->join_list))) in mptcp_do_flush_join_list()
816 spin_lock_bh(&msk->join_list_lock); in mptcp_do_flush_join_list()
817 list_for_each_entry(subflow, &msk->join_list, node) { in mptcp_do_flush_join_list()
820 mptcp_propagate_sndbuf((struct sock *)msk, mptcp_subflow_tcp_sock(subflow)); in mptcp_do_flush_join_list()
821 if (READ_ONCE(msk->setsockopt_seq) != sseq) in mptcp_do_flush_join_list()
824 list_splice_tail_init(&msk->join_list, &msk->conn_list); in mptcp_do_flush_join_list()
825 spin_unlock_bh(&msk->join_list_lock); in mptcp_do_flush_join_list()
830 void __mptcp_flush_join_list(struct mptcp_sock *msk) in __mptcp_flush_join_list() argument
832 if (likely(!mptcp_do_flush_join_list(msk))) in __mptcp_flush_join_list()
835 if (!test_and_set_bit(MPTCP_WORK_SYNC_SETSOCKOPT, &msk->flags)) in __mptcp_flush_join_list()
836 mptcp_schedule_work((struct sock *)msk); in __mptcp_flush_join_list()
839 static void mptcp_flush_join_list(struct mptcp_sock *msk) in mptcp_flush_join_list() argument
841 bool sync_needed = test_and_clear_bit(MPTCP_WORK_SYNC_SETSOCKOPT, &msk->flags); in mptcp_flush_join_list()
845 if (!mptcp_do_flush_join_list(msk) && !sync_needed) in mptcp_flush_join_list()
848 mptcp_sockopt_sync_all(msk); in mptcp_flush_join_list()
888 static void mptcp_check_for_eof(struct mptcp_sock *msk) in mptcp_check_for_eof() argument
891 struct sock *sk = (struct sock *)msk; in mptcp_check_for_eof()
894 mptcp_for_each_subflow(msk, subflow) in mptcp_check_for_eof()
925 static struct sock *mptcp_subflow_recv_lookup(const struct mptcp_sock *msk) in mptcp_subflow_recv_lookup() argument
928 struct sock *sk = (struct sock *)msk; in mptcp_subflow_recv_lookup()
932 mptcp_for_each_subflow(msk, subflow) { in mptcp_subflow_recv_lookup()
959 static bool mptcp_frag_can_collapse_to(const struct mptcp_sock *msk, in mptcp_frag_can_collapse_to() argument
966 df->data_seq + df->data_len == msk->write_seq; in mptcp_frag_can_collapse_to()
1003 struct mptcp_sock *msk = mptcp_sk(sk); in __mptcp_clean_una() local
1011 if (__mptcp_check_fallback(msk)) in __mptcp_clean_una()
1012 msk->snd_una = READ_ONCE(msk->snd_nxt); in __mptcp_clean_una()
1014 snd_una = msk->snd_una; in __mptcp_clean_una()
1015 list_for_each_entry_safe(dfrag, dtmp, &msk->rtx_queue, list) { in __mptcp_clean_una()
1019 if (unlikely(dfrag == msk->first_pending)) { in __mptcp_clean_una()
1021 if (WARN_ON_ONCE(!msk->recovery)) in __mptcp_clean_una()
1024 WRITE_ONCE(msk->first_pending, mptcp_send_next(sk)); in __mptcp_clean_una()
1037 if (WARN_ON_ONCE(!msk->recovery)) in __mptcp_clean_una()
1054 if (unlikely(msk->recovery) && after64(msk->snd_una, msk->recovery_snd_nxt)) in __mptcp_clean_una()
1055 msk->recovery = false; in __mptcp_clean_una()
1061 if (snd_una == READ_ONCE(msk->snd_nxt) && in __mptcp_clean_una()
1062 snd_una == READ_ONCE(msk->write_seq)) { in __mptcp_clean_una()
1063 if (mptcp_timer_pending(sk) && !mptcp_data_fin_enabled(msk)) in __mptcp_clean_una()
1088 struct mptcp_sock *msk = mptcp_sk(sk); in mptcp_enter_memory_pressure() local
1092 mptcp_for_each_subflow(msk, subflow) { in mptcp_enter_memory_pressure()
1116 mptcp_carve_data_frag(const struct mptcp_sock *msk, struct page_frag *pfrag, in mptcp_carve_data_frag() argument
1124 dfrag->data_seq = msk->write_seq; in mptcp_carve_data_frag()
1142 static int mptcp_check_allowed_size(struct mptcp_sock *msk, u64 data_seq, in mptcp_check_allowed_size() argument
1145 u64 window_end = mptcp_wnd_end(msk); in mptcp_check_allowed_size()
1147 if (__mptcp_check_fallback(msk)) in mptcp_check_allowed_size()
1235 struct mptcp_sock *msk = mptcp_sk(sk); in mptcp_sendmsg_frag() local
1245 msk, ssk, dfrag->data_seq, dfrag->data_len, info->sent); in mptcp_sendmsg_frag()
1289 copy = mptcp_check_allowed_size(msk, data_seq, copy); in mptcp_sendmsg_frag()
1291 u64 snd_una = READ_ONCE(msk->snd_una); in mptcp_sendmsg_frag()
1293 if (snd_una != msk->snd_nxt) { in mptcp_sendmsg_frag()
1352 if (READ_ONCE(msk->csum_enabled)) in mptcp_sendmsg_frag()
1358 if (READ_ONCE(msk->csum_enabled)) in mptcp_sendmsg_frag()
1401 static struct sock *mptcp_subflow_get_send(struct mptcp_sock *msk) in mptcp_subflow_get_send() argument
1405 struct sock *sk = (struct sock *)msk; in mptcp_subflow_get_send()
1414 if (__mptcp_check_fallback(msk)) { in mptcp_subflow_get_send()
1415 if (!msk->first) in mptcp_subflow_get_send()
1417 return sk_stream_memory_free(msk->first) ? msk->first : NULL; in mptcp_subflow_get_send()
1421 if (msk->last_snd && msk->snd_burst > 0 && in mptcp_subflow_get_send()
1422 sk_stream_memory_free(msk->last_snd) && in mptcp_subflow_get_send()
1423 mptcp_subflow_active(mptcp_subflow_ctx(msk->last_snd))) { in mptcp_subflow_get_send()
1425 return msk->last_snd; in mptcp_subflow_get_send()
1433 mptcp_for_each_subflow(msk, subflow) { in mptcp_subflow_get_send()
1462 msk->last_snd = send_info[0].ssk; in mptcp_subflow_get_send()
1463 msk->snd_burst = min_t(int, MPTCP_SEND_BURST_SIZE, in mptcp_subflow_get_send()
1464 tcp_sk(msk->last_snd)->snd_wnd); in mptcp_subflow_get_send()
1465 return msk->last_snd; in mptcp_subflow_get_send()
1477 static void mptcp_update_post_push(struct mptcp_sock *msk, in mptcp_update_post_push() argument
1485 msk->snd_burst -= sent; in mptcp_update_post_push()
1498 if (likely(after64(snd_nxt_new, msk->snd_nxt))) in mptcp_update_post_push()
1499 msk->snd_nxt = snd_nxt_new; in mptcp_update_post_push()
1512 struct mptcp_sock *msk = mptcp_sk(sk); in __mptcp_push_pending() local
1527 __mptcp_flush_join_list(msk); in __mptcp_push_pending()
1528 ssk = mptcp_subflow_get_send(msk); in __mptcp_push_pending()
1555 mptcp_update_post_push(msk, dfrag, ret); in __mptcp_push_pending()
1557 WRITE_ONCE(msk->first_pending, mptcp_send_next(sk)); in __mptcp_push_pending()
1574 struct mptcp_sock *msk = mptcp_sk(sk); in __mptcp_subflow_push_pending() local
1613 mptcp_update_post_push(msk, dfrag, ret); in __mptcp_subflow_push_pending()
1615 WRITE_ONCE(msk->first_pending, mptcp_send_next(sk)); in __mptcp_subflow_push_pending()
1628 if (msk->snd_data_fin_enable && in __mptcp_subflow_push_pending()
1629 msk->snd_nxt + 1 == msk->write_seq) in __mptcp_subflow_push_pending()
1645 struct mptcp_sock *msk = mptcp_sk(sk); in mptcp_sendmsg() local
1685 dfrag_collapsed = mptcp_frag_can_collapse_to(msk, pfrag, dfrag); in mptcp_sendmsg()
1693 dfrag = mptcp_carve_data_frag(msk, pfrag, pfrag->offset); in mptcp_sendmsg()
1721 WRITE_ONCE(msk->write_seq, msk->write_seq + psize); in mptcp_sendmsg()
1729 list_add_tail(&dfrag->list, &msk->rtx_queue); in mptcp_sendmsg()
1730 if (!msk->first_pending) in mptcp_sendmsg()
1731 WRITE_ONCE(msk->first_pending, dfrag); in mptcp_sendmsg()
1733 pr_debug("msk=%p dfrag at seq=%llu len=%u sent=%u new=%d", msk, in mptcp_sendmsg()
1755 static int __mptcp_recvmsg_mskq(struct mptcp_sock *msk, in __mptcp_recvmsg_mskq() argument
1764 skb_queue_walk_safe(&msk->receive_queue, skb, tmp) { in __mptcp_recvmsg_mskq()
1795 WRITE_ONCE(msk->rmem_released, msk->rmem_released + skb->truesize); in __mptcp_recvmsg_mskq()
1796 __skb_unlink(skb, &msk->receive_queue); in __mptcp_recvmsg_mskq()
1811 static void mptcp_rcv_space_adjust(struct mptcp_sock *msk, int copied) in mptcp_rcv_space_adjust() argument
1814 struct sock *sk = (struct sock *)msk; in mptcp_rcv_space_adjust()
1823 msk->rcvq_space.copied += copied; in mptcp_rcv_space_adjust()
1826 time = tcp_stamp_us_delta(mstamp, msk->rcvq_space.time); in mptcp_rcv_space_adjust()
1828 rtt_us = msk->rcvq_space.rtt_us; in mptcp_rcv_space_adjust()
1833 mptcp_for_each_subflow(msk, subflow) { in mptcp_rcv_space_adjust()
1847 msk->rcvq_space.rtt_us = rtt_us; in mptcp_rcv_space_adjust()
1851 if (msk->rcvq_space.copied <= msk->rcvq_space.space) in mptcp_rcv_space_adjust()
1859 rcvwin = ((u64)msk->rcvq_space.copied << 1) + 16 * advmss; in mptcp_rcv_space_adjust()
1861 grow = rcvwin * (msk->rcvq_space.copied - msk->rcvq_space.space); in mptcp_rcv_space_adjust()
1863 do_div(grow, msk->rcvq_space.space); in mptcp_rcv_space_adjust()
1885 mptcp_for_each_subflow(msk, subflow) { in mptcp_rcv_space_adjust()
1899 msk->rcvq_space.space = msk->rcvq_space.copied; in mptcp_rcv_space_adjust()
1901 msk->rcvq_space.copied = 0; in mptcp_rcv_space_adjust()
1902 msk->rcvq_space.time = mstamp; in mptcp_rcv_space_adjust()
1907 struct mptcp_sock *msk = mptcp_sk(sk); in __mptcp_update_rmem() local
1909 if (!msk->rmem_released) in __mptcp_update_rmem()
1912 atomic_sub(msk->rmem_released, &sk->sk_rmem_alloc); in __mptcp_update_rmem()
1913 mptcp_rmem_uncharge(sk, msk->rmem_released); in __mptcp_update_rmem()
1914 WRITE_ONCE(msk->rmem_released, 0); in __mptcp_update_rmem()
1919 struct mptcp_sock *msk = mptcp_sk(sk); in __mptcp_splice_receive_queue() local
1921 skb_queue_splice_tail_init(&sk->sk_receive_queue, &msk->receive_queue); in __mptcp_splice_receive_queue()
1924 static bool __mptcp_move_skbs(struct mptcp_sock *msk) in __mptcp_move_skbs() argument
1926 struct sock *sk = (struct sock *)msk; in __mptcp_move_skbs()
1930 mptcp_flush_join_list(msk); in __mptcp_move_skbs()
1932 struct sock *ssk = mptcp_subflow_recv_lookup(msk); in __mptcp_move_skbs()
1945 done = __mptcp_move_skbs_from_subflow(msk, ssk, &moved); in __mptcp_move_skbs()
1955 if (!RB_EMPTY_ROOT(&msk->out_of_order_queue) || in __mptcp_move_skbs()
1959 ret |= __mptcp_ofo_queue(msk); in __mptcp_move_skbs()
1964 mptcp_check_data_fin((struct sock *)msk); in __mptcp_move_skbs()
1965 return !skb_queue_empty(&msk->receive_queue); in __mptcp_move_skbs()
1971 struct mptcp_sock *msk = mptcp_sk(sk); in mptcp_recvmsg() local
1995 bytes_read = __mptcp_recvmsg_mskq(msk, msg, len - copied, flags, &tss, &cmsg_flags); in mptcp_recvmsg()
2005 mptcp_cleanup_rbuf(msk); in mptcp_recvmsg()
2007 if (skb_queue_empty(&msk->receive_queue) && __mptcp_move_skbs(msk)) in mptcp_recvmsg()
2029 if (test_and_clear_bit(MPTCP_WORK_EOF, &msk->flags)) in mptcp_recvmsg()
2030 mptcp_check_for_eof(msk); in mptcp_recvmsg()
2036 if (__mptcp_move_skbs(msk)) in mptcp_recvmsg()
2068 msk, skb_queue_empty_lockless(&sk->sk_receive_queue), in mptcp_recvmsg()
2069 skb_queue_empty(&msk->receive_queue), copied); in mptcp_recvmsg()
2071 mptcp_rcv_space_adjust(msk, copied); in mptcp_recvmsg()
2082 struct mptcp_sock *msk = mptcp_sk(sk); in mptcp_retransmit_timer() local
2087 if (!test_and_set_bit(MPTCP_WORK_RTX, &msk->flags)) in mptcp_retransmit_timer()
2091 set_bit(MPTCP_RETRANSMIT, &msk->flags); in mptcp_retransmit_timer()
2110 static struct sock *mptcp_subflow_get_retrans(struct mptcp_sock *msk) in mptcp_subflow_get_retrans() argument
2116 sock_owned_by_me((const struct sock *)msk); in mptcp_subflow_get_retrans()
2118 if (__mptcp_check_fallback(msk)) in mptcp_subflow_get_retrans()
2121 mptcp_for_each_subflow(msk, subflow) { in mptcp_subflow_get_retrans()
2129 mptcp_pm_subflow_chk_stale(msk, ssk); in mptcp_subflow_get_retrans()
2151 static void mptcp_dispose_initial_subflow(struct mptcp_sock *msk) in mptcp_dispose_initial_subflow() argument
2153 if (msk->subflow) { in mptcp_dispose_initial_subflow()
2154 iput(SOCK_INODE(msk->subflow)); in mptcp_dispose_initial_subflow()
2155 msk->subflow = NULL; in mptcp_dispose_initial_subflow()
2162 struct mptcp_sock *msk = mptcp_sk(sk); in __mptcp_retransmit_pending_data() local
2182 msk->recovery_snd_nxt = msk->snd_nxt; in __mptcp_retransmit_pending_data()
2183 msk->recovery = true; in __mptcp_retransmit_pending_data()
2186 msk->first_pending = rtx_head; in __mptcp_retransmit_pending_data()
2187 msk->snd_burst = 0; in __mptcp_retransmit_pending_data()
2190 list_for_each_entry(cur, &msk->rtx_queue, list) { in __mptcp_retransmit_pending_data()
2210 struct mptcp_sock *msk = mptcp_sk(sk); in __mptcp_close_ssk() local
2243 if (ssk == msk->last_snd) in __mptcp_close_ssk()
2244 msk->last_snd = NULL; in __mptcp_close_ssk()
2246 if (ssk == msk->first) in __mptcp_close_ssk()
2247 msk->first = NULL; in __mptcp_close_ssk()
2249 if (msk->subflow && ssk == msk->subflow->sk) in __mptcp_close_ssk()
2250 mptcp_dispose_initial_subflow(msk); in __mptcp_close_ssk()
2269 static void __mptcp_close_subflow(struct mptcp_sock *msk) in __mptcp_close_subflow() argument
2275 list_for_each_entry_safe(subflow, tmp, &msk->conn_list, node) { in __mptcp_close_subflow()
2285 mptcp_close_ssk((struct sock *)msk, ssk, subflow); in __mptcp_close_subflow()
2308 static void mptcp_check_fastclose(struct mptcp_sock *msk) in mptcp_check_fastclose() argument
2311 struct sock *sk = &msk->sk.icsk_inet.sk; in mptcp_check_fastclose()
2313 if (likely(!READ_ONCE(msk->rcv_fastclose))) in mptcp_check_fastclose()
2316 mptcp_token_destroy(msk); in mptcp_check_fastclose()
2318 list_for_each_entry_safe(subflow, tmp, &msk->conn_list, node) { in mptcp_check_fastclose()
2333 set_bit(MPTCP_WORK_CLOSE_SUBFLOW, &msk->flags); in mptcp_check_fastclose()
2340 struct mptcp_sock *msk = mptcp_sk(sk); in __mptcp_retrans() local
2350 ssk = mptcp_subflow_get_retrans(msk); in __mptcp_retrans()
2353 if (mptcp_data_fin_enabled(msk)) { in __mptcp_retrans()
2358 mptcp_send_ack(msk); in __mptcp_retrans()
2376 info.limit = READ_ONCE(msk->csum_enabled) ? dfrag->data_len : dfrag->already_sent; in __mptcp_retrans()
2403 struct mptcp_sock *msk = container_of(work, struct mptcp_sock, work); in mptcp_worker() local
2404 struct sock *sk = &msk->sk.icsk_inet.sk; in mptcp_worker()
2413 mptcp_flush_join_list(msk); in mptcp_worker()
2415 mptcp_check_fastclose(msk); in mptcp_worker()
2417 if (msk->pm.status) in mptcp_worker()
2418 mptcp_pm_nl_work(msk); in mptcp_worker()
2420 if (test_and_clear_bit(MPTCP_WORK_EOF, &msk->flags)) in mptcp_worker()
2421 mptcp_check_for_eof(msk); in mptcp_worker()
2437 if (test_and_clear_bit(MPTCP_WORK_CLOSE_SUBFLOW, &msk->flags)) in mptcp_worker()
2438 __mptcp_close_subflow(msk); in mptcp_worker()
2440 if (test_and_clear_bit(MPTCP_WORK_RTX, &msk->flags)) in mptcp_worker()
2450 struct mptcp_sock *msk = mptcp_sk(sk); in __mptcp_init_sock() local
2452 spin_lock_init(&msk->join_list_lock); in __mptcp_init_sock()
2454 INIT_LIST_HEAD(&msk->conn_list); in __mptcp_init_sock()
2455 INIT_LIST_HEAD(&msk->join_list); in __mptcp_init_sock()
2456 INIT_LIST_HEAD(&msk->rtx_queue); in __mptcp_init_sock()
2457 INIT_WORK(&msk->work, mptcp_worker); in __mptcp_init_sock()
2458 __skb_queue_head_init(&msk->receive_queue); in __mptcp_init_sock()
2459 msk->out_of_order_queue = RB_ROOT; in __mptcp_init_sock()
2460 msk->first_pending = NULL; in __mptcp_init_sock()
2461 msk->rmem_fwd_alloc = 0; in __mptcp_init_sock()
2462 WRITE_ONCE(msk->rmem_released, 0); in __mptcp_init_sock()
2463 msk->timer_ival = TCP_RTO_MIN; in __mptcp_init_sock()
2465 msk->first = NULL; in __mptcp_init_sock()
2467 WRITE_ONCE(msk->csum_enabled, mptcp_is_checksum_enabled(sock_net(sk))); in __mptcp_init_sock()
2468 msk->recovery = false; in __mptcp_init_sock()
2470 mptcp_pm_data_init(msk); in __mptcp_init_sock()
2473 timer_setup(&msk->sk.icsk_retransmit_timer, mptcp_retransmit_timer, 0); in __mptcp_init_sock()
2518 struct mptcp_sock *msk = mptcp_sk(sk); in __mptcp_clear_xmit() local
2521 WRITE_ONCE(msk->first_pending, NULL); in __mptcp_clear_xmit()
2522 list_for_each_entry_safe(dfrag, dtmp, &msk->rtx_queue, list) in __mptcp_clear_xmit()
2528 struct mptcp_sock *msk = mptcp_sk(sk); in mptcp_cancel_work() local
2530 if (cancel_work_sync(&msk->work)) in mptcp_cancel_work()
2593 struct mptcp_sock *msk = mptcp_sk(sk); in __mptcp_check_send_data_fin() local
2596 msk, msk->snd_data_fin_enable, !!mptcp_send_head(sk), in __mptcp_check_send_data_fin()
2597 msk->snd_nxt, msk->write_seq); in __mptcp_check_send_data_fin()
2602 if (!msk->snd_data_fin_enable || msk->snd_nxt + 1 != msk->write_seq || in __mptcp_check_send_data_fin()
2606 WRITE_ONCE(msk->snd_nxt, msk->write_seq); in __mptcp_check_send_data_fin()
2611 if (__mptcp_check_fallback(msk)) { in __mptcp_check_send_data_fin()
2620 mptcp_flush_join_list(msk); in __mptcp_check_send_data_fin()
2621 mptcp_for_each_subflow(msk, subflow) { in __mptcp_check_send_data_fin()
2630 struct mptcp_sock *msk = mptcp_sk(sk); in __mptcp_wr_shutdown() local
2633 msk, msk->snd_data_fin_enable, sk->sk_shutdown, sk->sk_state, in __mptcp_wr_shutdown()
2637 WRITE_ONCE(msk->write_seq, msk->write_seq + 1); in __mptcp_wr_shutdown()
2638 WRITE_ONCE(msk->snd_data_fin_enable, 1); in __mptcp_wr_shutdown()
2646 struct mptcp_sock *msk = mptcp_sk(sk); in __mptcp_destroy_sock() local
2649 pr_debug("msk=%p", msk); in __mptcp_destroy_sock()
2656 spin_lock_bh(&msk->join_list_lock); in __mptcp_destroy_sock()
2657 list_splice_tail_init(&msk->join_list, &msk->conn_list); in __mptcp_destroy_sock()
2658 spin_unlock_bh(&msk->join_list_lock); in __mptcp_destroy_sock()
2659 list_splice_init(&msk->conn_list, &conn_list); in __mptcp_destroy_sock()
2661 sk_stop_timer(sk, &msk->sk.icsk_retransmit_timer); in __mptcp_destroy_sock()
2663 msk->pm.status = 0; in __mptcp_destroy_sock()
2672 WARN_ON_ONCE(msk->rmem_fwd_alloc); in __mptcp_destroy_sock()
2673 WARN_ON_ONCE(msk->rmem_released); in __mptcp_destroy_sock()
2678 mptcp_dispose_initial_subflow(msk); in __mptcp_destroy_sock()
2730 static void mptcp_copy_inaddrs(struct sock *msk, const struct sock *ssk) in mptcp_copy_inaddrs() argument
2734 struct ipv6_pinfo *msk6 = inet6_sk(msk); in mptcp_copy_inaddrs()
2736 msk->sk_v6_daddr = ssk->sk_v6_daddr; in mptcp_copy_inaddrs()
2737 msk->sk_v6_rcv_saddr = ssk->sk_v6_rcv_saddr; in mptcp_copy_inaddrs()
2745 inet_sk(msk)->inet_num = inet_sk(ssk)->inet_num; in mptcp_copy_inaddrs()
2746 inet_sk(msk)->inet_dport = inet_sk(ssk)->inet_dport; in mptcp_copy_inaddrs()
2747 inet_sk(msk)->inet_sport = inet_sk(ssk)->inet_sport; in mptcp_copy_inaddrs()
2748 inet_sk(msk)->inet_daddr = inet_sk(ssk)->inet_daddr; in mptcp_copy_inaddrs()
2749 inet_sk(msk)->inet_saddr = inet_sk(ssk)->inet_saddr; in mptcp_copy_inaddrs()
2750 inet_sk(msk)->inet_rcv_saddr = inet_sk(ssk)->inet_rcv_saddr; in mptcp_copy_inaddrs()
2756 struct mptcp_sock *msk = mptcp_sk(sk); in mptcp_disconnect() local
2758 mptcp_do_flush_join_list(msk); in mptcp_disconnect()
2760 mptcp_for_each_subflow(msk, subflow) { in mptcp_disconnect()
2785 struct mptcp_sock *msk; in mptcp_sk_clone() local
2798 msk = mptcp_sk(nsk); in mptcp_sk_clone()
2799 msk->local_key = subflow_req->local_key; in mptcp_sk_clone()
2800 msk->token = subflow_req->token; in mptcp_sk_clone()
2801 msk->subflow = NULL; in mptcp_sk_clone()
2802 WRITE_ONCE(msk->fully_established, false); in mptcp_sk_clone()
2804 WRITE_ONCE(msk->csum_enabled, true); in mptcp_sk_clone()
2806 msk->write_seq = subflow_req->idsn + 1; in mptcp_sk_clone()
2807 msk->snd_nxt = msk->write_seq; in mptcp_sk_clone()
2808 msk->snd_una = msk->write_seq; in mptcp_sk_clone()
2809 msk->wnd_end = msk->snd_nxt + req->rsk_rcv_wnd; in mptcp_sk_clone()
2810 msk->setsockopt_seq = mptcp_sk(sk)->setsockopt_seq; in mptcp_sk_clone()
2813 msk->can_ack = true; in mptcp_sk_clone()
2814 msk->remote_key = mp_opt->sndr_key; in mptcp_sk_clone()
2815 mptcp_crypto_key_sha(msk->remote_key, NULL, &ack_seq); in mptcp_sk_clone()
2817 WRITE_ONCE(msk->ack_seq, ack_seq); in mptcp_sk_clone()
2818 WRITE_ONCE(msk->rcv_wnd_sent, ack_seq); in mptcp_sk_clone()
2833 void mptcp_rcv_space_init(struct mptcp_sock *msk, const struct sock *ssk) in mptcp_rcv_space_init() argument
2837 msk->rcvq_space.copied = 0; in mptcp_rcv_space_init()
2838 msk->rcvq_space.rtt_us = 0; in mptcp_rcv_space_init()
2840 msk->rcvq_space.time = tp->tcp_mstamp; in mptcp_rcv_space_init()
2843 msk->rcvq_space.space = min_t(u32, tp->rcv_wnd, in mptcp_rcv_space_init()
2845 if (msk->rcvq_space.space == 0) in mptcp_rcv_space_init()
2846 msk->rcvq_space.space = TCP_INIT_CWND * TCP_MSS_DEFAULT; in mptcp_rcv_space_init()
2848 WRITE_ONCE(msk->wnd_end, msk->snd_nxt + tcp_sk(ssk)->snd_wnd); in mptcp_rcv_space_init()
2854 struct mptcp_sock *msk = mptcp_sk(sk); in mptcp_accept() local
2858 listener = __mptcp_nmpc_socket(msk); in mptcp_accept()
2864 pr_debug("msk=%p, listener=%p", msk, mptcp_subflow_ctx(listener->sk)); in mptcp_accept()
2869 pr_debug("msk=%p, subflow is mptcp=%d", msk, sk_is_mptcp(newsk)); in mptcp_accept()
2899 void mptcp_destroy_common(struct mptcp_sock *msk) in mptcp_destroy_common() argument
2901 struct sock *sk = (struct sock *)msk; in mptcp_destroy_common()
2906 skb_queue_splice_tail_init(&msk->receive_queue, &sk->sk_receive_queue); in mptcp_destroy_common()
2908 skb_rbtree_purge(&msk->out_of_order_queue); in mptcp_destroy_common()
2913 sk->sk_forward_alloc += msk->rmem_fwd_alloc; in mptcp_destroy_common()
2914 msk->rmem_fwd_alloc = 0; in mptcp_destroy_common()
2915 mptcp_token_destroy(msk); in mptcp_destroy_common()
2916 mptcp_pm_free_anno_list(msk); in mptcp_destroy_common()
2921 struct mptcp_sock *msk = mptcp_sk(sk); in mptcp_destroy() local
2923 mptcp_destroy_common(msk); in mptcp_destroy()
3061 struct mptcp_sock *msk = mptcp_sk(sk); in mptcp_get_port() local
3064 ssock = __mptcp_nmpc_socket(msk); in mptcp_get_port()
3065 pr_debug("msk=%p, subflow=%p", msk, ssock); in mptcp_get_port()
3075 struct mptcp_sock *msk; in mptcp_finish_connect() local
3081 msk = mptcp_sk(sk); in mptcp_finish_connect()
3093 WRITE_ONCE(msk->remote_key, subflow->remote_key); in mptcp_finish_connect()
3094 WRITE_ONCE(msk->local_key, subflow->local_key); in mptcp_finish_connect()
3095 WRITE_ONCE(msk->write_seq, subflow->idsn + 1); in mptcp_finish_connect()
3096 WRITE_ONCE(msk->snd_nxt, msk->write_seq); in mptcp_finish_connect()
3097 WRITE_ONCE(msk->ack_seq, ack_seq); in mptcp_finish_connect()
3098 WRITE_ONCE(msk->rcv_wnd_sent, ack_seq); in mptcp_finish_connect()
3099 WRITE_ONCE(msk->can_ack, 1); in mptcp_finish_connect()
3100 WRITE_ONCE(msk->snd_una, msk->write_seq); in mptcp_finish_connect()
3102 mptcp_pm_new_connection(msk, ssk, 0); in mptcp_finish_connect()
3104 mptcp_rcv_space_init(msk, ssk); in mptcp_finish_connect()
3119 struct mptcp_sock *msk = mptcp_sk(subflow->conn); in mptcp_finish_join() local
3120 struct sock *parent = (void *)msk; in mptcp_finish_join()
3124 pr_debug("msk=%p, subflow=%p", msk, subflow); in mptcp_finish_join()
3132 if (!msk->pm.server_side) in mptcp_finish_join()
3135 if (!mptcp_pm_allow_new_subflow(msk)) { in mptcp_finish_join()
3145 spin_lock_bh(&msk->join_list_lock); in mptcp_finish_join()
3148 list_add_tail(&subflow->node, &msk->join_list); in mptcp_finish_join()
3151 spin_unlock_bh(&msk->join_list_lock); in mptcp_finish_join()
3163 subflow->map_seq = READ_ONCE(msk->ack_seq); in mptcp_finish_join()
3165 mptcp_event(MPTCP_EVENT_SUB_ESTABLISHED, msk, ssk, GFP_ATOMIC); in mptcp_finish_join()
3213 struct mptcp_sock *msk = mptcp_sk(sock->sk); in mptcp_bind() local
3218 ssock = __mptcp_nmpc_socket(msk); in mptcp_bind()
3233 static void mptcp_subflow_early_fallback(struct mptcp_sock *msk, in mptcp_subflow_early_fallback() argument
3237 __mptcp_do_fallback(msk); in mptcp_subflow_early_fallback()
3243 struct mptcp_sock *msk = mptcp_sk(sock->sk); in mptcp_stream_connect() local
3249 if (sock->state != SS_UNCONNECTED && msk->subflow) { in mptcp_stream_connect()
3253 ssock = msk->subflow; in mptcp_stream_connect()
3257 ssock = __mptcp_nmpc_socket(msk); in mptcp_stream_connect()
3263 mptcp_token_destroy(msk); in mptcp_stream_connect()
3271 mptcp_subflow_early_fallback(msk, subflow); in mptcp_stream_connect()
3275 mptcp_subflow_early_fallback(msk, subflow); in mptcp_stream_connect()
3277 if (likely(!__mptcp_check_fallback(msk))) in mptcp_stream_connect()
3299 struct mptcp_sock *msk = mptcp_sk(sock->sk); in mptcp_listen() local
3303 pr_debug("msk=%p", msk); in mptcp_listen()
3306 ssock = __mptcp_nmpc_socket(msk); in mptcp_listen()
3312 mptcp_token_destroy(msk); in mptcp_listen()
3329 struct mptcp_sock *msk = mptcp_sk(sock->sk); in mptcp_stream_accept() local
3333 pr_debug("msk=%p", msk); in mptcp_stream_accept()
3339 ssock = __mptcp_nmpc_socket(msk); in mptcp_stream_accept()
3343 clear_bit(MPTCP_DATA_READY, &msk->flags); in mptcp_stream_accept()
3349 struct mptcp_sock *msk = mptcp_sk(newsock->sk); in mptcp_stream_accept() local
3362 subflow = mptcp_subflow_ctx(msk->first); in mptcp_stream_accept()
3363 list_add(&subflow->node, &msk->conn_list); in mptcp_stream_accept()
3364 sock_hold(msk->first); in mptcp_stream_accept()
3366 mptcp_pm_fully_established(msk, msk->first, GFP_KERNEL); in mptcp_stream_accept()
3368 mptcp_copy_inaddrs(newsk, msk->first); in mptcp_stream_accept()
3369 mptcp_rcv_space_init(msk, msk->first); in mptcp_stream_accept()
3370 mptcp_propagate_sndbuf(newsk, msk->first); in mptcp_stream_accept()
3375 mptcp_flush_join_list(msk); in mptcp_stream_accept()
3376 mptcp_for_each_subflow(msk, subflow) { in mptcp_stream_accept()
3386 set_bit(MPTCP_DATA_READY, &msk->flags); in mptcp_stream_accept()
3395 static __poll_t mptcp_check_readable(struct mptcp_sock *msk) in mptcp_check_readable() argument
3400 if (skb_queue_empty_lockless(&((struct sock *)msk)->sk_receive_queue) && in mptcp_check_readable()
3401 skb_queue_empty_lockless(&msk->receive_queue)) in mptcp_check_readable()
3407 static __poll_t mptcp_check_writeable(struct mptcp_sock *msk) in mptcp_check_writeable() argument
3409 struct sock *sk = (struct sock *)msk; in mptcp_check_writeable()
3429 struct mptcp_sock *msk; in mptcp_poll() local
3433 msk = mptcp_sk(sk); in mptcp_poll()
3437 pr_debug("msk=%p state=%d flags=%lx", msk, state, msk->flags); in mptcp_poll()
3439 return test_bit(MPTCP_DATA_READY, &msk->flags) ? EPOLLIN | EPOLLRDNORM : 0; in mptcp_poll()
3442 mask |= mptcp_check_readable(msk); in mptcp_poll()
3443 mask |= mptcp_check_writeable(msk); in mptcp_poll()