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()
54 mutex_unlock(&call->user_mutex); in rxrpc_wait_for_tx_window_intr()
56 if (mutex_lock_interruptible(&call->user_mutex) < 0) in rxrpc_wait_for_tx_window_intr()
65 static int rxrpc_wait_for_tx_window_waitall(struct rxrpc_sock *rx, in rxrpc_wait_for_tx_window_waitall() argument
71 rtt = READ_ONCE(call->peer->srtt_us) >> 3; in rxrpc_wait_for_tx_window_waitall()
77 tx_start = READ_ONCE(call->tx_hard_ack); in rxrpc_wait_for_tx_window_waitall()
82 tx_win = READ_ONCE(call->tx_hard_ack); in rxrpc_wait_for_tx_window_waitall()
86 if (call->state >= RXRPC_CALL_COMPLETE) in rxrpc_wait_for_tx_window_waitall()
87 return call->error; in rxrpc_wait_for_tx_window_waitall()
91 return -EINTR; in rxrpc_wait_for_tx_window_waitall()
106 static int rxrpc_wait_for_tx_window_nonintr(struct rxrpc_sock *rx, in rxrpc_wait_for_tx_window_nonintr() argument
115 if (call->state >= RXRPC_CALL_COMPLETE) in rxrpc_wait_for_tx_window_nonintr()
116 return call->error; in rxrpc_wait_for_tx_window_nonintr()
125 * - caller holds the socket locked
127 static int rxrpc_wait_for_tx_window(struct rxrpc_sock *rx, in rxrpc_wait_for_tx_window() argument
136 call->tx_hard_ack, call->tx_top, call->tx_winsize); in rxrpc_wait_for_tx_window()
138 add_wait_queue(&call->waitq, &myself); in rxrpc_wait_for_tx_window()
140 switch (call->interruptibility) { in rxrpc_wait_for_tx_window()
143 ret = rxrpc_wait_for_tx_window_waitall(rx, call); in rxrpc_wait_for_tx_window()
145 ret = rxrpc_wait_for_tx_window_intr(rx, call, timeo); in rxrpc_wait_for_tx_window()
150 ret = rxrpc_wait_for_tx_window_nonintr(rx, call, timeo); in rxrpc_wait_for_tx_window()
154 remove_wait_queue(&call->waitq, &myself); in rxrpc_wait_for_tx_window()
165 spin_lock_bh(&call->lock); in rxrpc_instant_resend()
167 if (call->state < RXRPC_CALL_COMPLETE) { in rxrpc_instant_resend()
168 call->rxtx_annotations[ix] = in rxrpc_instant_resend()
169 (call->rxtx_annotations[ix] & RXRPC_TX_ANNO_LAST) | in rxrpc_instant_resend()
171 if (!test_and_set_bit(RXRPC_CALL_EV_RESEND, &call->events)) in rxrpc_instant_resend()
175 spin_unlock_bh(&call->lock); in rxrpc_instant_resend()
182 static void rxrpc_notify_end_tx(struct rxrpc_sock *rx, struct rxrpc_call *call, in rxrpc_notify_end_tx() argument
186 notify_end_tx(&rx->sk, call, call->user_call_ID); in rxrpc_notify_end_tx()
194 static int rxrpc_queue_packet(struct rxrpc_sock *rx, struct rxrpc_call *call, in rxrpc_queue_packet() argument
198 struct rxrpc_skb_priv *sp = rxrpc_skb(skb); in rxrpc_queue_packet() local
200 rxrpc_seq_t seq = sp->hdr.seq; in rxrpc_queue_packet()
206 ASSERTCMP(seq, ==, call->tx_top + 1); in rxrpc_queue_packet()
214 skb->tstamp = ktime_get_real(); in rxrpc_queue_packet()
218 call->rxtx_annotations[ix] = annotation; in rxrpc_queue_packet()
220 call->rxtx_buffer[ix] = skb; in rxrpc_queue_packet()
221 call->tx_top = seq; in rxrpc_queue_packet()
227 if (last || call->state == RXRPC_CALL_SERVER_ACK_REQUEST) { in rxrpc_queue_packet()
229 write_lock_bh(&call->state_lock); in rxrpc_queue_packet()
230 switch (call->state) { in rxrpc_queue_packet()
232 call->state = RXRPC_CALL_CLIENT_AWAIT_REPLY; in rxrpc_queue_packet()
233 rxrpc_notify_end_tx(rx, call, notify_end_tx); in rxrpc_queue_packet()
236 call->state = RXRPC_CALL_SERVER_SEND_REPLY; in rxrpc_queue_packet()
238 WRITE_ONCE(call->ack_at, now + MAX_JIFFY_OFFSET); in rxrpc_queue_packet()
239 if (call->ackr_reason == RXRPC_ACK_DELAY) in rxrpc_queue_packet()
240 call->ackr_reason = 0; in rxrpc_queue_packet()
246 call->state = RXRPC_CALL_SERVER_AWAIT_ACK; in rxrpc_queue_packet()
247 rxrpc_notify_end_tx(rx, call, notify_end_tx); in rxrpc_queue_packet()
252 write_unlock_bh(&call->state_lock); in rxrpc_queue_packet()
261 case -ENETUNREACH: in rxrpc_queue_packet()
262 case -EHOSTUNREACH: in rxrpc_queue_packet()
263 case -ECONNREFUSED: in rxrpc_queue_packet()
272 unsigned long resend_at = now + call->peer->rto_j; in rxrpc_queue_packet()
274 WRITE_ONCE(call->resend_at, resend_at); in rxrpc_queue_packet()
287 * - must be called in process context
288 * - The caller holds the call user access mutex, but not the socket lock.
290 static int rxrpc_send_data(struct rxrpc_sock *rx, in rxrpc_send_data() argument
295 struct rxrpc_skb_priv *sp; in rxrpc_send_data() local
297 struct sock *sk = &rx->sk; in rxrpc_send_data()
302 timeo = sock_sndtimeo(sk, msg->msg_flags & MSG_DONTWAIT); in rxrpc_send_data()
307 if (sk->sk_shutdown & SEND_SHUTDOWN) in rxrpc_send_data()
308 return -EPIPE; in rxrpc_send_data()
310 more = msg->msg_flags & MSG_MORE; in rxrpc_send_data()
312 if (call->tx_total_len != -1) { in rxrpc_send_data()
313 if (len > call->tx_total_len) in rxrpc_send_data()
314 return -EMSGSIZE; in rxrpc_send_data()
315 if (!more && len != call->tx_total_len) in rxrpc_send_data()
316 return -EMSGSIZE; in rxrpc_send_data()
319 skb = call->tx_pending; in rxrpc_send_data()
320 call->tx_pending = NULL; in rxrpc_send_data()
326 if (call->ackr_reason == RXRPC_ACK_PING_RESPONSE) in rxrpc_send_data()
335 ret = -EAGAIN; in rxrpc_send_data()
336 if (msg->msg_flags & MSG_DONTWAIT) in rxrpc_send_data()
338 ret = rxrpc_wait_for_tx_window(rx, call, in rxrpc_send_data()
340 msg->msg_flags & MSG_WAITALL); 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()
465 call->tx_pending = skb; in rxrpc_send_data()
471 _leave(" = %d", call->error); in rxrpc_send_data()
472 return call->error; in rxrpc_send_data()
480 ret = -EFAULT; in rxrpc_send_data()
493 if (msg->msg_controllen == 0) in rxrpc_sendmsg_cmsg()
494 return -EINVAL; in rxrpc_sendmsg_cmsg()
498 return -EINVAL; in rxrpc_sendmsg_cmsg()
500 len = cmsg->cmsg_len - sizeof(struct cmsghdr); in rxrpc_sendmsg_cmsg()
502 cmsg->cmsg_level, cmsg->cmsg_type, len); in rxrpc_sendmsg_cmsg()
504 if (cmsg->cmsg_level != SOL_RXRPC) in rxrpc_sendmsg_cmsg()
507 switch (cmsg->cmsg_type) { in rxrpc_sendmsg_cmsg()
509 if (msg->msg_flags & MSG_CMSG_COMPAT) { in rxrpc_sendmsg_cmsg()
511 return -EINVAL; in rxrpc_sendmsg_cmsg()
512 p->call.user_call_ID = *(u32 *)CMSG_DATA(cmsg); in rxrpc_sendmsg_cmsg()
515 return -EINVAL; in rxrpc_sendmsg_cmsg()
516 p->call.user_call_ID = *(unsigned long *) in rxrpc_sendmsg_cmsg()
523 if (p->command != RXRPC_CMD_SEND_DATA) in rxrpc_sendmsg_cmsg()
524 return -EINVAL; in rxrpc_sendmsg_cmsg()
525 p->command = RXRPC_CMD_SEND_ABORT; in rxrpc_sendmsg_cmsg()
526 if (len != sizeof(p->abort_code)) in rxrpc_sendmsg_cmsg()
527 return -EINVAL; in rxrpc_sendmsg_cmsg()
528 p->abort_code = *(unsigned int *)CMSG_DATA(cmsg); in rxrpc_sendmsg_cmsg()
529 if (p->abort_code == 0) in rxrpc_sendmsg_cmsg()
530 return -EINVAL; in rxrpc_sendmsg_cmsg()
534 if (p->command != RXRPC_CMD_SEND_DATA) in rxrpc_sendmsg_cmsg()
535 return -EINVAL; in rxrpc_sendmsg_cmsg()
536 p->command = RXRPC_CMD_CHARGE_ACCEPT; in rxrpc_sendmsg_cmsg()
538 return -EINVAL; in rxrpc_sendmsg_cmsg()
542 p->exclusive = true; in rxrpc_sendmsg_cmsg()
544 return -EINVAL; in rxrpc_sendmsg_cmsg()
548 p->upgrade = true; in rxrpc_sendmsg_cmsg()
550 return -EINVAL; in rxrpc_sendmsg_cmsg()
554 if (p->call.tx_total_len != -1 || len != sizeof(__s64)) in rxrpc_sendmsg_cmsg()
555 return -EINVAL; in rxrpc_sendmsg_cmsg()
556 p->call.tx_total_len = *(__s64 *)CMSG_DATA(cmsg); in rxrpc_sendmsg_cmsg()
557 if (p->call.tx_total_len < 0) in rxrpc_sendmsg_cmsg()
558 return -EINVAL; in rxrpc_sendmsg_cmsg()
563 return -EINVAL; in rxrpc_sendmsg_cmsg()
564 memcpy(&p->call.timeouts, CMSG_DATA(cmsg), len); in rxrpc_sendmsg_cmsg()
565 p->call.nr_timeouts = len / 4; in rxrpc_sendmsg_cmsg()
566 if (p->call.timeouts.hard > INT_MAX / HZ) in rxrpc_sendmsg_cmsg()
567 return -ERANGE; in rxrpc_sendmsg_cmsg()
568 if (p->call.nr_timeouts >= 2 && p->call.timeouts.idle > 60 * 60 * 1000) in rxrpc_sendmsg_cmsg()
569 return -ERANGE; in rxrpc_sendmsg_cmsg()
570 if (p->call.nr_timeouts >= 3 && p->call.timeouts.normal > 60 * 60 * 1000) in rxrpc_sendmsg_cmsg()
571 return -ERANGE; in rxrpc_sendmsg_cmsg()
575 return -EINVAL; in rxrpc_sendmsg_cmsg()
580 return -EINVAL; in rxrpc_sendmsg_cmsg()
581 if (p->call.tx_total_len != -1 && p->command != RXRPC_CMD_SEND_DATA) in rxrpc_sendmsg_cmsg()
582 return -EINVAL; in rxrpc_sendmsg_cmsg()
589 * - Called with the socket lock held, which it must release.
590 * - If it returns a call, the call's lock will need releasing by the caller.
593 rxrpc_new_client_call_for_sendmsg(struct rxrpc_sock *rx, struct msghdr *msg, in rxrpc_new_client_call_for_sendmsg() argument
595 __releases(&rx->sk.sk_lock.slock) in rxrpc_new_client_call_for_sendmsg()
596 __acquires(&call->user_mutex) in rxrpc_new_client_call_for_sendmsg()
602 DECLARE_SOCKADDR(struct sockaddr_rxrpc *, srx, msg->msg_name); in rxrpc_new_client_call_for_sendmsg()
606 if (!msg->msg_name) { in rxrpc_new_client_call_for_sendmsg()
607 release_sock(&rx->sk); in rxrpc_new_client_call_for_sendmsg()
608 return ERR_PTR(-EDESTADDRREQ); in rxrpc_new_client_call_for_sendmsg()
611 key = rx->key; in rxrpc_new_client_call_for_sendmsg()
612 if (key && !rx->key->payload.data[0]) in rxrpc_new_client_call_for_sendmsg()
616 cp.local = rx->local; in rxrpc_new_client_call_for_sendmsg()
617 cp.key = rx->key; in rxrpc_new_client_call_for_sendmsg()
618 cp.security_level = rx->min_sec_level; in rxrpc_new_client_call_for_sendmsg()
619 cp.exclusive = rx->exclusive | p->exclusive; in rxrpc_new_client_call_for_sendmsg()
620 cp.upgrade = p->upgrade; in rxrpc_new_client_call_for_sendmsg()
621 cp.service_id = srx->srx_service; in rxrpc_new_client_call_for_sendmsg()
622 call = rxrpc_new_client_call(rx, &cp, srx, &p->call, GFP_KERNEL, in rxrpc_new_client_call_for_sendmsg()
633 * - caller holds the socket locked
634 * - the socket may be either a client socket or a server socket
636 int rxrpc_do_sendmsg(struct rxrpc_sock *rx, struct msghdr *msg, size_t len) in rxrpc_do_sendmsg() argument
637 __releases(&rx->sk.sk_lock.slock) in rxrpc_do_sendmsg()
638 __releases(&call->user_mutex) in rxrpc_do_sendmsg()
646 .call.tx_total_len = -1, in rxrpc_do_sendmsg()
663 ret = -EINVAL; in rxrpc_do_sendmsg()
664 if (rx->sk.sk_state != RXRPC_SERVER_LISTENING) in rxrpc_do_sendmsg()
666 ret = rxrpc_user_charge_accept(rx, p.call.user_call_ID); in rxrpc_do_sendmsg()
670 call = rxrpc_find_call_by_user_ID(rx, p.call.user_call_ID); in rxrpc_do_sendmsg()
672 ret = -EBADSLT; in rxrpc_do_sendmsg()
675 call = rxrpc_new_client_call_for_sendmsg(rx, msg, &p); in rxrpc_do_sendmsg()
681 if (READ_ONCE(call->state) == RXRPC_CALL_COMPLETE) in rxrpc_do_sendmsg()
684 switch (READ_ONCE(call->state)) { in rxrpc_do_sendmsg()
690 ret = -EBUSY; in rxrpc_do_sendmsg()
696 ret = mutex_lock_interruptible(&call->user_mutex); in rxrpc_do_sendmsg()
697 release_sock(&rx->sk); in rxrpc_do_sendmsg()
699 ret = -ERESTARTSYS; in rxrpc_do_sendmsg()
703 if (p.call.tx_total_len != -1) { in rxrpc_do_sendmsg()
704 ret = -EINVAL; in rxrpc_do_sendmsg()
705 if (call->tx_total_len != -1 || in rxrpc_do_sendmsg()
706 call->tx_pending || in rxrpc_do_sendmsg()
707 call->tx_top != 0) in rxrpc_do_sendmsg()
709 call->tx_total_len = p.call.tx_total_len; in rxrpc_do_sendmsg()
718 WRITE_ONCE(call->next_rx_timo, j); in rxrpc_do_sendmsg()
724 WRITE_ONCE(call->next_req_timo, j); in rxrpc_do_sendmsg()
731 WRITE_ONCE(call->expect_term_by, j); in rxrpc_do_sendmsg()
738 state = READ_ONCE(call->state); in rxrpc_do_sendmsg()
740 call->debug_id, call->user_call_ID, state, call->conn); in rxrpc_do_sendmsg()
744 ret = -ESHUTDOWN; in rxrpc_do_sendmsg()
747 if (rxrpc_abort_call("CMD", call, 0, p.abort_code, -ECONNABORTED)) in rxrpc_do_sendmsg()
750 ret = -EINVAL; in rxrpc_do_sendmsg()
754 ret = -EPROTO; in rxrpc_do_sendmsg()
759 ret = -EPROTO; in rxrpc_do_sendmsg()
761 ret = rxrpc_send_data(rx, call, msg, len, NULL); in rxrpc_do_sendmsg()
765 mutex_unlock(&call->user_mutex); in rxrpc_do_sendmsg()
772 release_sock(&rx->sk); in rxrpc_do_sendmsg()
777 * rxrpc_kernel_send_data - Allow a kernel service to send data on a call
795 _enter("{%d,%s},", call->debug_id, rxrpc_call_states[call->state]); in rxrpc_kernel_send_data()
797 ASSERTCMP(msg->msg_name, ==, NULL); in rxrpc_kernel_send_data()
798 ASSERTCMP(msg->msg_control, ==, NULL); in rxrpc_kernel_send_data()
800 mutex_lock(&call->user_mutex); in rxrpc_kernel_send_data()
803 call->debug_id, call->user_call_ID, call->state, call->conn); in rxrpc_kernel_send_data()
805 switch (READ_ONCE(call->state)) { in rxrpc_kernel_send_data()
809 ret = rxrpc_send_data(rxrpc_sk(sock->sk), call, msg, len, in rxrpc_kernel_send_data()
813 read_lock_bh(&call->state_lock); in rxrpc_kernel_send_data()
814 ret = call->error; in rxrpc_kernel_send_data()
815 read_unlock_bh(&call->state_lock); in rxrpc_kernel_send_data()
820 ret = -EPROTO; in rxrpc_kernel_send_data()
824 mutex_unlock(&call->user_mutex); in rxrpc_kernel_send_data()
831 * rxrpc_kernel_abort_call - Allow a kernel service to abort a call
836 * @why: 3-char string indicating why.
846 _enter("{%d},%d,%d,%s", call->debug_id, abort_code, error, why); in rxrpc_kernel_abort_call()
848 mutex_lock(&call->user_mutex); in rxrpc_kernel_abort_call()
854 mutex_unlock(&call->user_mutex); in rxrpc_kernel_abort_call()
860 * rxrpc_kernel_set_tx_length - Set the total Tx length on a call
866 * allows buffer-to-packet encrypt-and-copy to be performed.
874 WARN_ON(call->tx_total_len != -1); in rxrpc_kernel_set_tx_length()
875 call->tx_total_len = tx_total_len; in rxrpc_kernel_set_tx_length()