Lines Matching +full:rx +full:- +full:sched +full:- +full:sp
1 // SPDX-License-Identifier: GPL-2.0-or-later
14 #include <linux/sched/signal.h>
18 #include "ar-internal.h"
26 min_t(unsigned int, call->tx_winsize, in rxrpc_check_tx_space()
27 call->cong_cwnd + call->cong_extra); in rxrpc_check_tx_space()
28 rxrpc_seq_t tx_win = READ_ONCE(call->tx_hard_ack); in rxrpc_check_tx_space()
32 return call->tx_top - tx_win < win_size; in rxrpc_check_tx_space()
38 static int rxrpc_wait_for_tx_window_intr(struct rxrpc_sock *rx, in rxrpc_wait_for_tx_window_intr() argument
47 if (call->state >= RXRPC_CALL_COMPLETE) in rxrpc_wait_for_tx_window_intr()
48 return call->error; in rxrpc_wait_for_tx_window_intr()
62 static int rxrpc_wait_for_tx_window_waitall(struct rxrpc_sock *rx, in rxrpc_wait_for_tx_window_waitall() argument
68 rtt = READ_ONCE(call->peer->srtt_us) >> 3; in rxrpc_wait_for_tx_window_waitall()
74 tx_start = READ_ONCE(call->tx_hard_ack); in rxrpc_wait_for_tx_window_waitall()
79 tx_win = READ_ONCE(call->tx_hard_ack); in rxrpc_wait_for_tx_window_waitall()
83 if (call->state >= RXRPC_CALL_COMPLETE) in rxrpc_wait_for_tx_window_waitall()
84 return call->error; in rxrpc_wait_for_tx_window_waitall()
88 return -EINTR; in rxrpc_wait_for_tx_window_waitall()
103 static int rxrpc_wait_for_tx_window_nonintr(struct rxrpc_sock *rx, in rxrpc_wait_for_tx_window_nonintr() argument
112 if (call->state >= RXRPC_CALL_COMPLETE) in rxrpc_wait_for_tx_window_nonintr()
113 return call->error; in rxrpc_wait_for_tx_window_nonintr()
122 * - caller holds the socket locked
124 static int rxrpc_wait_for_tx_window(struct rxrpc_sock *rx, in rxrpc_wait_for_tx_window() argument
133 call->tx_hard_ack, call->tx_top, call->tx_winsize); in rxrpc_wait_for_tx_window()
135 add_wait_queue(&call->waitq, &myself); in rxrpc_wait_for_tx_window()
137 switch (call->interruptibility) { in rxrpc_wait_for_tx_window()
140 ret = rxrpc_wait_for_tx_window_waitall(rx, call); in rxrpc_wait_for_tx_window()
142 ret = rxrpc_wait_for_tx_window_intr(rx, call, timeo); in rxrpc_wait_for_tx_window()
147 ret = rxrpc_wait_for_tx_window_nonintr(rx, call, timeo); in rxrpc_wait_for_tx_window()
151 remove_wait_queue(&call->waitq, &myself); in rxrpc_wait_for_tx_window()
162 spin_lock_bh(&call->lock); in rxrpc_instant_resend()
164 if (call->state < RXRPC_CALL_COMPLETE) { in rxrpc_instant_resend()
165 call->rxtx_annotations[ix] = in rxrpc_instant_resend()
166 (call->rxtx_annotations[ix] & RXRPC_TX_ANNO_LAST) | in rxrpc_instant_resend()
168 if (!test_and_set_bit(RXRPC_CALL_EV_RESEND, &call->events)) in rxrpc_instant_resend()
172 spin_unlock_bh(&call->lock); in rxrpc_instant_resend()
179 static void rxrpc_notify_end_tx(struct rxrpc_sock *rx, struct rxrpc_call *call, in rxrpc_notify_end_tx() argument
183 notify_end_tx(&rx->sk, call, call->user_call_ID); in rxrpc_notify_end_tx()
191 static int rxrpc_queue_packet(struct rxrpc_sock *rx, struct rxrpc_call *call, in rxrpc_queue_packet() argument
195 struct rxrpc_skb_priv *sp = rxrpc_skb(skb); in rxrpc_queue_packet() local
197 rxrpc_seq_t seq = sp->hdr.seq; in rxrpc_queue_packet()
203 ASSERTCMP(seq, ==, call->tx_top + 1); in rxrpc_queue_packet()
211 skb->tstamp = ktime_get_real(); in rxrpc_queue_packet()
215 call->rxtx_annotations[ix] = annotation; in rxrpc_queue_packet()
217 call->rxtx_buffer[ix] = skb; in rxrpc_queue_packet()
218 call->tx_top = seq; in rxrpc_queue_packet()
224 if (last || call->state == RXRPC_CALL_SERVER_ACK_REQUEST) { in rxrpc_queue_packet()
226 write_lock_bh(&call->state_lock); in rxrpc_queue_packet()
227 switch (call->state) { in rxrpc_queue_packet()
229 call->state = RXRPC_CALL_CLIENT_AWAIT_REPLY; in rxrpc_queue_packet()
230 rxrpc_notify_end_tx(rx, call, notify_end_tx); in rxrpc_queue_packet()
233 call->state = RXRPC_CALL_SERVER_SEND_REPLY; in rxrpc_queue_packet()
235 WRITE_ONCE(call->ack_at, now + MAX_JIFFY_OFFSET); in rxrpc_queue_packet()
236 if (call->ackr_reason == RXRPC_ACK_DELAY) in rxrpc_queue_packet()
237 call->ackr_reason = 0; in rxrpc_queue_packet()
243 call->state = RXRPC_CALL_SERVER_AWAIT_ACK; in rxrpc_queue_packet()
244 rxrpc_notify_end_tx(rx, call, notify_end_tx); in rxrpc_queue_packet()
249 write_unlock_bh(&call->state_lock); in rxrpc_queue_packet()
258 case -ENETUNREACH: in rxrpc_queue_packet()
259 case -EHOSTUNREACH: in rxrpc_queue_packet()
260 case -ECONNREFUSED: in rxrpc_queue_packet()
269 unsigned long resend_at = now + call->peer->rto_j; in rxrpc_queue_packet()
271 WRITE_ONCE(call->resend_at, resend_at); in rxrpc_queue_packet()
284 * - must be called in process context
285 * - The caller holds the call user access mutex, but not the socket lock.
287 static int rxrpc_send_data(struct rxrpc_sock *rx, in rxrpc_send_data() argument
293 struct rxrpc_skb_priv *sp; in rxrpc_send_data() local
295 struct sock *sk = &rx->sk; in rxrpc_send_data()
298 bool more = msg->msg_flags & MSG_MORE; in rxrpc_send_data()
301 timeo = sock_sndtimeo(sk, msg->msg_flags & MSG_DONTWAIT); in rxrpc_send_data()
307 ret = -EPIPE; in rxrpc_send_data()
308 if (sk->sk_shutdown & SEND_SHUTDOWN) in rxrpc_send_data()
310 state = READ_ONCE(call->state); in rxrpc_send_data()
311 ret = -ESHUTDOWN; in rxrpc_send_data()
314 ret = -EPROTO; in rxrpc_send_data()
320 ret = -EMSGSIZE; in rxrpc_send_data()
321 if (call->tx_total_len != -1) { in rxrpc_send_data()
322 if (len - copied > call->tx_total_len) in rxrpc_send_data()
324 if (!more && len - copied != call->tx_total_len) in rxrpc_send_data()
328 skb = call->tx_pending; in rxrpc_send_data()
329 call->tx_pending = NULL; in rxrpc_send_data()
334 if (call->ackr_reason == RXRPC_ACK_PING_RESPONSE) in rxrpc_send_data()
346 max -= call->conn->security_size; in rxrpc_send_data()
347 max &= ~(call->conn->size_align - 1UL); in rxrpc_send_data()
353 space = chunk + call->conn->size_align; in rxrpc_send_data()
354 space &= ~(call->conn->size_align - 1UL); in rxrpc_send_data()
356 size = space + call->conn->security_size; in rxrpc_send_data()
362 sk, size, msg->msg_flags & MSG_DONTWAIT, &ret); in rxrpc_send_data()
366 sp = rxrpc_skb(skb); in rxrpc_send_data()
367 sp->rx_flags |= RXRPC_SKB_TX_BUFFER; in rxrpc_send_data()
372 ASSERTCMP(skb->mark, ==, 0); in rxrpc_send_data()
374 _debug("HS: %u", call->conn->security_size); in rxrpc_send_data()
375 skb_reserve(skb, call->conn->security_size); in rxrpc_send_data()
376 skb->len += call->conn->security_size; in rxrpc_send_data()
378 sp->remain = chunk; in rxrpc_send_data()
379 if (sp->remain > skb_tailroom(skb)) in rxrpc_send_data()
380 sp->remain = skb_tailroom(skb); in rxrpc_send_data()
386 sp->remain); in rxrpc_send_data()
388 skb->ip_summed = CHECKSUM_UNNECESSARY; in rxrpc_send_data()
392 sp = rxrpc_skb(skb); in rxrpc_send_data()
400 if (copy > sp->remain) in rxrpc_send_data()
401 copy = sp->remain; in rxrpc_send_data()
404 ret = skb_add_data(skb, &msg->msg_iter, copy); in rxrpc_send_data()
408 sp->remain -= copy; in rxrpc_send_data()
409 skb->mark += copy; in rxrpc_send_data()
411 if (call->tx_total_len != -1) in rxrpc_send_data()
412 call->tx_total_len -= copy; in rxrpc_send_data()
417 if (call->state == RXRPC_CALL_COMPLETE) in rxrpc_send_data()
421 if (sp->remain <= 0 || in rxrpc_send_data()
423 struct rxrpc_connection *conn = call->conn; in rxrpc_send_data()
428 if (conn->security_ix) { in rxrpc_send_data()
429 pad = conn->security_size + skb->mark; in rxrpc_send_data()
430 pad = conn->size_align - pad; in rxrpc_send_data()
431 pad &= conn->size_align - 1; in rxrpc_send_data()
437 seq = call->tx_top + 1; in rxrpc_send_data()
439 sp->hdr.seq = seq; in rxrpc_send_data()
440 sp->hdr._rsvd = 0; in rxrpc_send_data()
441 sp->hdr.flags = conn->out_clientflag; in rxrpc_send_data()
444 sp->hdr.flags |= RXRPC_LAST_PACKET; in rxrpc_send_data()
445 else if (call->tx_top - call->tx_hard_ack < in rxrpc_send_data()
446 call->tx_winsize) in rxrpc_send_data()
447 sp->hdr.flags |= RXRPC_MORE_PACKETS; in rxrpc_send_data()
449 ret = call->security->secure_packet( in rxrpc_send_data()
450 call, skb, skb->mark, skb->head); in rxrpc_send_data()
454 ret = rxrpc_queue_packet(rx, call, skb, in rxrpc_send_data()
464 if (READ_ONCE(call->state) == RXRPC_CALL_COMPLETE) { in rxrpc_send_data()
465 read_lock_bh(&call->state_lock); in rxrpc_send_data()
466 if (call->error < 0) in rxrpc_send_data()
467 ret = call->error; in rxrpc_send_data()
468 read_unlock_bh(&call->state_lock); in rxrpc_send_data()
471 call->tx_pending = skb; in rxrpc_send_data()
477 _leave(" = %d", call->error); in rxrpc_send_data()
478 return call->error; in rxrpc_send_data()
486 ret = -EFAULT; in rxrpc_send_data()
490 ret = -EAGAIN; in rxrpc_send_data()
491 if (msg->msg_flags & MSG_DONTWAIT) in rxrpc_send_data()
493 mutex_unlock(&call->user_mutex); in rxrpc_send_data()
495 ret = rxrpc_wait_for_tx_window(rx, call, &timeo, in rxrpc_send_data()
496 msg->msg_flags & MSG_WAITALL); in rxrpc_send_data()
499 if (call->interruptibility == RXRPC_INTERRUPTIBLE) { in rxrpc_send_data()
500 if (mutex_lock_interruptible(&call->user_mutex) < 0) { in rxrpc_send_data()
505 mutex_lock(&call->user_mutex); in rxrpc_send_data()
520 if (msg->msg_controllen == 0) in rxrpc_sendmsg_cmsg()
521 return -EINVAL; in rxrpc_sendmsg_cmsg()
525 return -EINVAL; in rxrpc_sendmsg_cmsg()
527 len = cmsg->cmsg_len - sizeof(struct cmsghdr); in rxrpc_sendmsg_cmsg()
529 cmsg->cmsg_level, cmsg->cmsg_type, len); in rxrpc_sendmsg_cmsg()
531 if (cmsg->cmsg_level != SOL_RXRPC) in rxrpc_sendmsg_cmsg()
534 switch (cmsg->cmsg_type) { in rxrpc_sendmsg_cmsg()
536 if (msg->msg_flags & MSG_CMSG_COMPAT) { in rxrpc_sendmsg_cmsg()
538 return -EINVAL; in rxrpc_sendmsg_cmsg()
539 p->call.user_call_ID = *(u32 *)CMSG_DATA(cmsg); in rxrpc_sendmsg_cmsg()
542 return -EINVAL; in rxrpc_sendmsg_cmsg()
543 p->call.user_call_ID = *(unsigned long *) in rxrpc_sendmsg_cmsg()
550 if (p->command != RXRPC_CMD_SEND_DATA) in rxrpc_sendmsg_cmsg()
551 return -EINVAL; in rxrpc_sendmsg_cmsg()
552 p->command = RXRPC_CMD_SEND_ABORT; in rxrpc_sendmsg_cmsg()
553 if (len != sizeof(p->abort_code)) in rxrpc_sendmsg_cmsg()
554 return -EINVAL; in rxrpc_sendmsg_cmsg()
555 p->abort_code = *(unsigned int *)CMSG_DATA(cmsg); in rxrpc_sendmsg_cmsg()
556 if (p->abort_code == 0) in rxrpc_sendmsg_cmsg()
557 return -EINVAL; in rxrpc_sendmsg_cmsg()
561 if (p->command != RXRPC_CMD_SEND_DATA) in rxrpc_sendmsg_cmsg()
562 return -EINVAL; in rxrpc_sendmsg_cmsg()
563 p->command = RXRPC_CMD_CHARGE_ACCEPT; in rxrpc_sendmsg_cmsg()
565 return -EINVAL; in rxrpc_sendmsg_cmsg()
569 p->exclusive = true; in rxrpc_sendmsg_cmsg()
571 return -EINVAL; in rxrpc_sendmsg_cmsg()
575 p->upgrade = true; in rxrpc_sendmsg_cmsg()
577 return -EINVAL; in rxrpc_sendmsg_cmsg()
581 if (p->call.tx_total_len != -1 || len != sizeof(__s64)) in rxrpc_sendmsg_cmsg()
582 return -EINVAL; in rxrpc_sendmsg_cmsg()
583 p->call.tx_total_len = *(__s64 *)CMSG_DATA(cmsg); in rxrpc_sendmsg_cmsg()
584 if (p->call.tx_total_len < 0) in rxrpc_sendmsg_cmsg()
585 return -EINVAL; in rxrpc_sendmsg_cmsg()
590 return -EINVAL; in rxrpc_sendmsg_cmsg()
591 memcpy(&p->call.timeouts, CMSG_DATA(cmsg), len); in rxrpc_sendmsg_cmsg()
592 p->call.nr_timeouts = len / 4; in rxrpc_sendmsg_cmsg()
593 if (p->call.timeouts.hard > INT_MAX / HZ) in rxrpc_sendmsg_cmsg()
594 return -ERANGE; in rxrpc_sendmsg_cmsg()
595 if (p->call.nr_timeouts >= 2 && p->call.timeouts.idle > 60 * 60 * 1000) in rxrpc_sendmsg_cmsg()
596 return -ERANGE; in rxrpc_sendmsg_cmsg()
597 if (p->call.nr_timeouts >= 3 && p->call.timeouts.normal > 60 * 60 * 1000) in rxrpc_sendmsg_cmsg()
598 return -ERANGE; in rxrpc_sendmsg_cmsg()
602 return -EINVAL; in rxrpc_sendmsg_cmsg()
607 return -EINVAL; in rxrpc_sendmsg_cmsg()
608 if (p->call.tx_total_len != -1 && p->command != RXRPC_CMD_SEND_DATA) in rxrpc_sendmsg_cmsg()
609 return -EINVAL; in rxrpc_sendmsg_cmsg()
616 * - Called with the socket lock held, which it must release.
617 * - If it returns a call, the call's lock will need releasing by the caller.
620 rxrpc_new_client_call_for_sendmsg(struct rxrpc_sock *rx, struct msghdr *msg, in rxrpc_new_client_call_for_sendmsg() argument
622 __releases(&rx->sk.sk_lock.slock) in rxrpc_new_client_call_for_sendmsg()
623 __acquires(&call->user_mutex) in rxrpc_new_client_call_for_sendmsg()
629 DECLARE_SOCKADDR(struct sockaddr_rxrpc *, srx, msg->msg_name); in rxrpc_new_client_call_for_sendmsg()
633 if (!msg->msg_name) { in rxrpc_new_client_call_for_sendmsg()
634 release_sock(&rx->sk); in rxrpc_new_client_call_for_sendmsg()
635 return ERR_PTR(-EDESTADDRREQ); in rxrpc_new_client_call_for_sendmsg()
638 key = rx->key; in rxrpc_new_client_call_for_sendmsg()
639 if (key && !rx->key->payload.data[0]) in rxrpc_new_client_call_for_sendmsg()
643 cp.local = rx->local; in rxrpc_new_client_call_for_sendmsg()
644 cp.key = rx->key; in rxrpc_new_client_call_for_sendmsg()
645 cp.security_level = rx->min_sec_level; in rxrpc_new_client_call_for_sendmsg()
646 cp.exclusive = rx->exclusive | p->exclusive; in rxrpc_new_client_call_for_sendmsg()
647 cp.upgrade = p->upgrade; in rxrpc_new_client_call_for_sendmsg()
648 cp.service_id = srx->srx_service; in rxrpc_new_client_call_for_sendmsg()
649 call = rxrpc_new_client_call(rx, &cp, srx, &p->call, GFP_KERNEL, in rxrpc_new_client_call_for_sendmsg()
660 * - caller holds the socket locked
661 * - the socket may be either a client socket or a server socket
663 int rxrpc_do_sendmsg(struct rxrpc_sock *rx, struct msghdr *msg, size_t len) in rxrpc_do_sendmsg() argument
664 __releases(&rx->sk.sk_lock.slock) in rxrpc_do_sendmsg()
665 __releases(&call->user_mutex) in rxrpc_do_sendmsg()
674 .call.tx_total_len = -1, in rxrpc_do_sendmsg()
691 ret = -EINVAL; in rxrpc_do_sendmsg()
692 if (rx->sk.sk_state != RXRPC_SERVER_LISTENING) in rxrpc_do_sendmsg()
694 ret = rxrpc_user_charge_accept(rx, p.call.user_call_ID); in rxrpc_do_sendmsg()
698 call = rxrpc_find_call_by_user_ID(rx, p.call.user_call_ID); in rxrpc_do_sendmsg()
700 ret = -EBADSLT; in rxrpc_do_sendmsg()
703 call = rxrpc_new_client_call_for_sendmsg(rx, msg, &p); in rxrpc_do_sendmsg()
709 if (READ_ONCE(call->state) == RXRPC_CALL_COMPLETE) in rxrpc_do_sendmsg()
712 switch (READ_ONCE(call->state)) { in rxrpc_do_sendmsg()
718 ret = -EBUSY; in rxrpc_do_sendmsg()
724 ret = mutex_lock_interruptible(&call->user_mutex); in rxrpc_do_sendmsg()
725 release_sock(&rx->sk); in rxrpc_do_sendmsg()
727 ret = -ERESTARTSYS; in rxrpc_do_sendmsg()
731 if (p.call.tx_total_len != -1) { in rxrpc_do_sendmsg()
732 ret = -EINVAL; in rxrpc_do_sendmsg()
733 if (call->tx_total_len != -1 || in rxrpc_do_sendmsg()
734 call->tx_pending || in rxrpc_do_sendmsg()
735 call->tx_top != 0) in rxrpc_do_sendmsg()
737 call->tx_total_len = p.call.tx_total_len; in rxrpc_do_sendmsg()
746 WRITE_ONCE(call->next_rx_timo, j); in rxrpc_do_sendmsg()
752 WRITE_ONCE(call->next_req_timo, j); in rxrpc_do_sendmsg()
759 WRITE_ONCE(call->expect_term_by, j); in rxrpc_do_sendmsg()
766 state = READ_ONCE(call->state); in rxrpc_do_sendmsg()
768 call->debug_id, call->user_call_ID, state, call->conn); in rxrpc_do_sendmsg()
772 ret = -ESHUTDOWN; in rxrpc_do_sendmsg()
775 if (rxrpc_abort_call("CMD", call, 0, p.abort_code, -ECONNABORTED)) in rxrpc_do_sendmsg()
778 ret = -EINVAL; in rxrpc_do_sendmsg()
780 ret = rxrpc_send_data(rx, call, msg, len, NULL, &dropped_lock); in rxrpc_do_sendmsg()
785 mutex_unlock(&call->user_mutex); in rxrpc_do_sendmsg()
792 release_sock(&rx->sk); in rxrpc_do_sendmsg()
797 * rxrpc_kernel_send_data - Allow a kernel service to send data on a call
816 _enter("{%d,%s},", call->debug_id, rxrpc_call_states[call->state]); in rxrpc_kernel_send_data()
818 ASSERTCMP(msg->msg_name, ==, NULL); in rxrpc_kernel_send_data()
819 ASSERTCMP(msg->msg_control, ==, NULL); in rxrpc_kernel_send_data()
821 mutex_lock(&call->user_mutex); in rxrpc_kernel_send_data()
824 call->debug_id, call->user_call_ID, call->state, call->conn); in rxrpc_kernel_send_data()
826 switch (READ_ONCE(call->state)) { in rxrpc_kernel_send_data()
830 ret = rxrpc_send_data(rxrpc_sk(sock->sk), call, msg, len, in rxrpc_kernel_send_data()
834 read_lock_bh(&call->state_lock); in rxrpc_kernel_send_data()
835 ret = call->error; in rxrpc_kernel_send_data()
836 read_unlock_bh(&call->state_lock); in rxrpc_kernel_send_data()
841 ret = -EPROTO; in rxrpc_kernel_send_data()
846 mutex_unlock(&call->user_mutex); in rxrpc_kernel_send_data()
853 * rxrpc_kernel_abort_call - Allow a kernel service to abort a call
858 * @why: 3-char string indicating why.
868 _enter("{%d},%d,%d,%s", call->debug_id, abort_code, error, why); in rxrpc_kernel_abort_call()
870 mutex_lock(&call->user_mutex); in rxrpc_kernel_abort_call()
876 mutex_unlock(&call->user_mutex); in rxrpc_kernel_abort_call()
882 * rxrpc_kernel_set_tx_length - Set the total Tx length on a call
888 * allows buffer-to-packet encrypt-and-copy to be performed.
896 WARN_ON(call->tx_total_len != -1); in rxrpc_kernel_set_tx_length()
897 call->tx_total_len = tx_total_len; in rxrpc_kernel_set_tx_length()