66 	struct nvmet_tcp_queue		*queue;  member
169 static inline u16 nvmet_tcp_cmd_tag(struct nvmet_tcp_queue *queue,  in nvmet_tcp_cmd_tag()  argument
172 	if (unlikely(!queue->nr_cmds)) {  in nvmet_tcp_cmd_tag()
177 	return cmd - queue->cmds;  in nvmet_tcp_cmd_tag()
205 nvmet_tcp_get_cmd(struct nvmet_tcp_queue *queue)  in nvmet_tcp_get_cmd()  argument
209 	cmd = list_first_entry_or_null(&queue->free_list,  in nvmet_tcp_get_cmd()
225 	if (unlikely(cmd == &cmd->queue->connect))  in nvmet_tcp_put_cmd()
228 	list_add_tail(&cmd->entry, &cmd->queue->free_list);  in nvmet_tcp_put_cmd()
231 static inline int queue_cpu(struct nvmet_tcp_queue *queue)  in queue_cpu()  argument
233 	return queue->sock->sk->sk_incoming_cpu;  in queue_cpu()
236 static inline u8 nvmet_tcp_hdgst_len(struct nvmet_tcp_queue *queue)  in nvmet_tcp_hdgst_len()  argument
238 	return queue->hdr_digest ? NVME_TCP_DIGEST_LENGTH : 0;  in nvmet_tcp_hdgst_len()
241 static inline u8 nvmet_tcp_ddgst_len(struct nvmet_tcp_queue *queue)  in nvmet_tcp_ddgst_len()  argument
243 	return queue->data_digest ? NVME_TCP_DIGEST_LENGTH : 0;  in nvmet_tcp_ddgst_len()
256 static int nvmet_tcp_verify_hdgst(struct nvmet_tcp_queue *queue,  in nvmet_tcp_verify_hdgst()  argument
265 			queue->idx);  in nvmet_tcp_verify_hdgst()
270 	nvmet_tcp_hdgst(queue->rcv_hash, pdu, len);  in nvmet_tcp_verify_hdgst()
274 			queue->idx, le32_to_cpu(recv_digest),  in nvmet_tcp_verify_hdgst()
282 static int nvmet_tcp_check_ddgst(struct nvmet_tcp_queue *queue, void *pdu)  in nvmet_tcp_check_ddgst()  argument
285 	u8 digest_len = nvmet_tcp_hdgst_len(queue);  in nvmet_tcp_check_ddgst()
292 		pr_err("queue %d: data digest flag is cleared\n", queue->idx);  in nvmet_tcp_check_ddgst()
338 static void nvmet_tcp_fatal_error(struct nvmet_tcp_queue *queue)  in nvmet_tcp_fatal_error()  argument
340 	queue->rcv_state = NVMET_TCP_RECV_ERR;  in nvmet_tcp_fatal_error()
341 	if (queue->nvme_sq.ctrl)  in nvmet_tcp_fatal_error()
342 		nvmet_ctrl_fatal_error(queue->nvme_sq.ctrl);  in nvmet_tcp_fatal_error()
344 		kernel_sock_shutdown(queue->sock, SHUT_RDWR);  in nvmet_tcp_fatal_error()
347 static void nvmet_tcp_socket_error(struct nvmet_tcp_queue *queue, int status)  in nvmet_tcp_socket_error()  argument
350 		kernel_sock_shutdown(queue->sock, SHUT_RDWR);  in nvmet_tcp_socket_error()
352 		nvmet_tcp_fatal_error(queue);  in nvmet_tcp_socket_error()
403 	struct nvmet_tcp_queue *queue = cmd->queue;  in nvmet_setup_c2h_data_pdu()  local
404 	u8 hdgst = nvmet_tcp_hdgst_len(cmd->queue);  in nvmet_setup_c2h_data_pdu()
405 	u8 ddgst = nvmet_tcp_ddgst_len(cmd->queue);  in nvmet_setup_c2h_data_pdu()
411 	pdu->hdr.flags = NVME_TCP_F_DATA_LAST | (queue->nvme_sq.sqhd_disabled ?  in nvmet_setup_c2h_data_pdu()
422 	if (queue->data_digest) {  in nvmet_setup_c2h_data_pdu()
424 		nvmet_tcp_calc_ddgst(queue->snd_hash, cmd);  in nvmet_setup_c2h_data_pdu()
427 	if (cmd->queue->hdr_digest) {  in nvmet_setup_c2h_data_pdu()
429 		nvmet_tcp_hdgst(queue->snd_hash, pdu, sizeof(*pdu));  in nvmet_setup_c2h_data_pdu()
436 	struct nvmet_tcp_queue *queue = cmd->queue;  in nvmet_setup_r2t_pdu()  local
437 	u8 hdgst = nvmet_tcp_hdgst_len(cmd->queue);  in nvmet_setup_r2t_pdu()
449 	pdu->ttag = nvmet_tcp_cmd_tag(cmd->queue, cmd);  in nvmet_setup_r2t_pdu()
452 	if (cmd->queue->hdr_digest) {  in nvmet_setup_r2t_pdu()
454 		nvmet_tcp_hdgst(queue->snd_hash, pdu, sizeof(*pdu));  in nvmet_setup_r2t_pdu()
461 	struct nvmet_tcp_queue *queue = cmd->queue;  in nvmet_setup_response_pdu()  local
462 	u8 hdgst = nvmet_tcp_hdgst_len(cmd->queue);  in nvmet_setup_response_pdu()
472 	if (cmd->queue->hdr_digest) {  in nvmet_setup_response_pdu()
474 		nvmet_tcp_hdgst(queue->snd_hash, pdu, sizeof(*pdu));  in nvmet_setup_response_pdu()
478 static void nvmet_tcp_process_resp_list(struct nvmet_tcp_queue *queue)  in nvmet_tcp_process_resp_list()  argument
483 	for (node = llist_del_all(&queue->resp_list); node; node = node->next) {  in nvmet_tcp_process_resp_list()
485 		list_add(&cmd->entry, &queue->resp_send_list);  in nvmet_tcp_process_resp_list()
486 		queue->send_list_len++;  in nvmet_tcp_process_resp_list()
490 static struct nvmet_tcp_cmd *nvmet_tcp_fetch_cmd(struct nvmet_tcp_queue *queue)  in nvmet_tcp_fetch_cmd()  argument
492 	queue->snd_cmd = list_first_entry_or_null(&queue->resp_send_list,  in nvmet_tcp_fetch_cmd()
494 	if (!queue->snd_cmd) {  in nvmet_tcp_fetch_cmd()
495 		nvmet_tcp_process_resp_list(queue);  in nvmet_tcp_fetch_cmd()
496 		queue->snd_cmd =  in nvmet_tcp_fetch_cmd()
497 			list_first_entry_or_null(&queue->resp_send_list,  in nvmet_tcp_fetch_cmd()
499 		if (unlikely(!queue->snd_cmd))  in nvmet_tcp_fetch_cmd()
503 	list_del_init(&queue->snd_cmd->entry);  in nvmet_tcp_fetch_cmd()
504 	queue->send_list_len--;  in nvmet_tcp_fetch_cmd()
506 	if (nvmet_tcp_need_data_out(queue->snd_cmd))  in nvmet_tcp_fetch_cmd()
507 		nvmet_setup_c2h_data_pdu(queue->snd_cmd);  in nvmet_tcp_fetch_cmd()
508 	else if (nvmet_tcp_need_data_in(queue->snd_cmd))  in nvmet_tcp_fetch_cmd()
509 		nvmet_setup_r2t_pdu(queue->snd_cmd);  in nvmet_tcp_fetch_cmd()
511 		nvmet_setup_response_pdu(queue->snd_cmd);  in nvmet_tcp_fetch_cmd()
513 	return queue->snd_cmd;  in nvmet_tcp_fetch_cmd()
520 	struct nvmet_tcp_queue	*queue = cmd->queue;  in nvmet_tcp_queue_response()  local
524 	if (unlikely(cmd == queue->cmd)) {  in nvmet_tcp_queue_response()
533 		if (queue->rcv_state == NVMET_TCP_RECV_PDU &&  in nvmet_tcp_queue_response()
539 	llist_add(&cmd->lentry, &queue->resp_list);  in nvmet_tcp_queue_response()
540 	queue_work_on(queue_cpu(queue), nvmet_tcp_wq, &cmd->queue->io_work);  in nvmet_tcp_queue_response()
553 	u8 hdgst = nvmet_tcp_hdgst_len(cmd->queue);  in nvmet_try_send_data_pdu()
557 	ret = kernel_sendpage(cmd->queue->sock, virt_to_page(cmd->data_pdu),  in nvmet_try_send_data_pdu()
576 	struct nvmet_tcp_queue *queue = cmd->queue;  in nvmet_try_send_data()  local
584 		if ((!last_in_batch && cmd->queue->send_list_len) ||  in nvmet_try_send_data()
586 		    queue->data_digest || !queue->nvme_sq.sqhd_disabled)  in nvmet_try_send_data()
589 		ret = kernel_sendpage(cmd->queue->sock, page, cmd->offset,  in nvmet_try_send_data()
604 	if (queue->data_digest) {  in nvmet_try_send_data()
608 		if (queue->nvme_sq.sqhd_disabled) {  in nvmet_try_send_data()
609 			cmd->queue->snd_cmd = NULL;  in nvmet_try_send_data()
616 	if (queue->nvme_sq.sqhd_disabled)  in nvmet_try_send_data()
626 	u8 hdgst = nvmet_tcp_hdgst_len(cmd->queue);  in nvmet_try_send_response()
631 	if (!last_in_batch && cmd->queue->send_list_len)  in nvmet_try_send_response()
636 	ret = kernel_sendpage(cmd->queue->sock, virt_to_page(cmd->rsp_pdu),  in nvmet_try_send_response()
647 	cmd->queue->snd_cmd = NULL;  in nvmet_try_send_response()
654 	u8 hdgst = nvmet_tcp_hdgst_len(cmd->queue);  in nvmet_try_send_r2t()
659 	if (!last_in_batch && cmd->queue->send_list_len)  in nvmet_try_send_r2t()
664 	ret = kernel_sendpage(cmd->queue->sock, virt_to_page(cmd->r2t_pdu),  in nvmet_try_send_r2t()
674 	cmd->queue->snd_cmd = NULL;  in nvmet_try_send_r2t()
680 	struct nvmet_tcp_queue *queue = cmd->queue;  in nvmet_try_send_ddgst()  local
689 	if (!last_in_batch && cmd->queue->send_list_len)  in nvmet_try_send_ddgst()
694 	ret = kernel_sendmsg(queue->sock, &msg, &iov, 1, iov.iov_len);  in nvmet_try_send_ddgst()
704 	if (queue->nvme_sq.sqhd_disabled) {  in nvmet_try_send_ddgst()
705 		cmd->queue->snd_cmd = NULL;  in nvmet_try_send_ddgst()
713 static int nvmet_tcp_try_send_one(struct nvmet_tcp_queue *queue,  in nvmet_tcp_try_send_one()  argument
716 	struct nvmet_tcp_cmd *cmd = queue->snd_cmd;  in nvmet_tcp_try_send_one()
719 	if (!cmd || queue->state == NVMET_TCP_Q_DISCONNECTING) {  in nvmet_tcp_try_send_one()
720 		cmd = nvmet_tcp_fetch_cmd(queue);  in nvmet_tcp_try_send_one()
762 static int nvmet_tcp_try_send(struct nvmet_tcp_queue *queue,  in nvmet_tcp_try_send()  argument
768 		ret = nvmet_tcp_try_send_one(queue, i == budget - 1);  in nvmet_tcp_try_send()
770 			nvmet_tcp_socket_error(queue, ret);  in nvmet_tcp_try_send()
781 static void nvmet_prepare_receive_pdu(struct nvmet_tcp_queue *queue)  in nvmet_prepare_receive_pdu()  argument
783 	queue->offset = 0;  in nvmet_prepare_receive_pdu()
784 	queue->left = sizeof(struct nvme_tcp_hdr);  in nvmet_prepare_receive_pdu()
785 	queue->cmd = NULL;  in nvmet_prepare_receive_pdu()
786 	queue->rcv_state = NVMET_TCP_RECV_PDU;  in nvmet_prepare_receive_pdu()
789 static void nvmet_tcp_free_crypto(struct nvmet_tcp_queue *queue)  in nvmet_tcp_free_crypto()  argument
791 	struct crypto_ahash *tfm = crypto_ahash_reqtfm(queue->rcv_hash);  in nvmet_tcp_free_crypto()
793 	ahash_request_free(queue->rcv_hash);  in nvmet_tcp_free_crypto()
794 	ahash_request_free(queue->snd_hash);  in nvmet_tcp_free_crypto()
798 static int nvmet_tcp_alloc_crypto(struct nvmet_tcp_queue *queue)  in nvmet_tcp_alloc_crypto()  argument
806 	queue->snd_hash = ahash_request_alloc(tfm, GFP_KERNEL);  in nvmet_tcp_alloc_crypto()
807 	if (!queue->snd_hash)  in nvmet_tcp_alloc_crypto()
809 	ahash_request_set_callback(queue->snd_hash, 0, NULL, NULL);  in nvmet_tcp_alloc_crypto()
811 	queue->rcv_hash = ahash_request_alloc(tfm, GFP_KERNEL);  in nvmet_tcp_alloc_crypto()
812 	if (!queue->rcv_hash)  in nvmet_tcp_alloc_crypto()
814 	ahash_request_set_callback(queue->rcv_hash, 0, NULL, NULL);  in nvmet_tcp_alloc_crypto()
818 	ahash_request_free(queue->snd_hash);  in nvmet_tcp_alloc_crypto()
825 static int nvmet_tcp_handle_icreq(struct nvmet_tcp_queue *queue)  in nvmet_tcp_handle_icreq()  argument
827 	struct nvme_tcp_icreq_pdu *icreq = &queue->pdu.icreq;  in nvmet_tcp_handle_icreq()
828 	struct nvme_tcp_icresp_pdu *icresp = &queue->pdu.icresp;  in nvmet_tcp_handle_icreq()
836 		nvmet_tcp_fatal_error(queue);  in nvmet_tcp_handle_icreq()
840 		pr_err("queue %d: bad pfv %d\n", queue->idx, icreq->pfv);  in nvmet_tcp_handle_icreq()
845 		pr_err("queue %d: unsupported hpda %d\n", queue->idx,  in nvmet_tcp_handle_icreq()
850 	queue->hdr_digest = !!(icreq->digest & NVME_TCP_HDR_DIGEST_ENABLE);  in nvmet_tcp_handle_icreq()
851 	queue->data_digest = !!(icreq->digest & NVME_TCP_DATA_DIGEST_ENABLE);  in nvmet_tcp_handle_icreq()
852 	if (queue->hdr_digest || queue->data_digest) {  in nvmet_tcp_handle_icreq()
853 		ret = nvmet_tcp_alloc_crypto(queue);  in nvmet_tcp_handle_icreq()
866 	if (queue->hdr_digest)  in nvmet_tcp_handle_icreq()
868 	if (queue->data_digest)  in nvmet_tcp_handle_icreq()
873 	ret = kernel_sendmsg(queue->sock, &msg, &iov, 1, iov.iov_len);  in nvmet_tcp_handle_icreq()
877 	queue->state = NVMET_TCP_Q_LIVE;  in nvmet_tcp_handle_icreq()
878 	nvmet_prepare_receive_pdu(queue);  in nvmet_tcp_handle_icreq()
881 	if (queue->hdr_digest || queue->data_digest)  in nvmet_tcp_handle_icreq()
882 		nvmet_tcp_free_crypto(queue);  in nvmet_tcp_handle_icreq()
886 static void nvmet_tcp_handle_req_failure(struct nvmet_tcp_queue *queue,  in nvmet_tcp_handle_req_failure()  argument
901 		nvmet_prepare_receive_pdu(queue);  in nvmet_tcp_handle_req_failure()
907 		pr_err("queue %d: failed to map data\n", queue->idx);  in nvmet_tcp_handle_req_failure()
908 		nvmet_tcp_fatal_error(queue);  in nvmet_tcp_handle_req_failure()
912 	queue->rcv_state = NVMET_TCP_RECV_DATA;  in nvmet_tcp_handle_req_failure()
917 static int nvmet_tcp_handle_h2c_data_pdu(struct nvmet_tcp_queue *queue)  in nvmet_tcp_handle_h2c_data_pdu()  argument
919 	struct nvme_tcp_data_pdu *data = &queue->pdu.data;  in nvmet_tcp_handle_h2c_data_pdu()
922 	if (likely(queue->nr_cmds)) {  in nvmet_tcp_handle_h2c_data_pdu()
923 		if (unlikely(data->ttag >= queue->nr_cmds)) {  in nvmet_tcp_handle_h2c_data_pdu()
925 				queue->idx, data->ttag, queue->nr_cmds);  in nvmet_tcp_handle_h2c_data_pdu()
926 			nvmet_tcp_fatal_error(queue);  in nvmet_tcp_handle_h2c_data_pdu()
929 		cmd = &queue->cmds[data->ttag];  in nvmet_tcp_handle_h2c_data_pdu()
931 		cmd = &queue->connect;  in nvmet_tcp_handle_h2c_data_pdu()
947 	queue->cmd = cmd;  in nvmet_tcp_handle_h2c_data_pdu()
948 	queue->rcv_state = NVMET_TCP_RECV_DATA;  in nvmet_tcp_handle_h2c_data_pdu()
953 static int nvmet_tcp_done_recv_pdu(struct nvmet_tcp_queue *queue)  in nvmet_tcp_done_recv_pdu()  argument
955 	struct nvme_tcp_hdr *hdr = &queue->pdu.cmd.hdr;  in nvmet_tcp_done_recv_pdu()
956 	struct nvme_command *nvme_cmd = &queue->pdu.cmd.cmd;  in nvmet_tcp_done_recv_pdu()
960 	if (unlikely(queue->state == NVMET_TCP_Q_CONNECTING)) {  in nvmet_tcp_done_recv_pdu()
964 			nvmet_tcp_fatal_error(queue);  in nvmet_tcp_done_recv_pdu()
967 		return nvmet_tcp_handle_icreq(queue);  in nvmet_tcp_done_recv_pdu()
972 			queue->idx, queue->state);  in nvmet_tcp_done_recv_pdu()
973 		nvmet_tcp_fatal_error(queue);  in nvmet_tcp_done_recv_pdu()
978 		ret = nvmet_tcp_handle_h2c_data_pdu(queue);  in nvmet_tcp_done_recv_pdu()
984 	queue->cmd = nvmet_tcp_get_cmd(queue);  in nvmet_tcp_done_recv_pdu()
985 	if (unlikely(!queue->cmd)) {  in nvmet_tcp_done_recv_pdu()
988 			queue->idx, queue->nr_cmds, queue->send_list_len,  in nvmet_tcp_done_recv_pdu()
990 		nvmet_tcp_fatal_error(queue);  in nvmet_tcp_done_recv_pdu()
994 	req = &queue->cmd->req;  in nvmet_tcp_done_recv_pdu()
997 	if (unlikely(!nvmet_req_init(req, &queue->nvme_cq,  in nvmet_tcp_done_recv_pdu()
998 			&queue->nvme_sq, &nvmet_tcp_ops))) {  in nvmet_tcp_done_recv_pdu()
1004 		nvmet_tcp_handle_req_failure(queue, queue->cmd, req);  in nvmet_tcp_done_recv_pdu()
1008 	ret = nvmet_tcp_map_data(queue->cmd);  in nvmet_tcp_done_recv_pdu()
1010 		pr_err("queue %d: failed to map data\n", queue->idx);  in nvmet_tcp_done_recv_pdu()
1011 		if (nvmet_tcp_has_inline_data(queue->cmd))  in nvmet_tcp_done_recv_pdu()
1012 			nvmet_tcp_fatal_error(queue);  in nvmet_tcp_done_recv_pdu()
1019 	if (nvmet_tcp_need_data_in(queue->cmd)) {  in nvmet_tcp_done_recv_pdu()
1020 		if (nvmet_tcp_has_inline_data(queue->cmd)) {  in nvmet_tcp_done_recv_pdu()
1021 			queue->rcv_state = NVMET_TCP_RECV_DATA;  in nvmet_tcp_done_recv_pdu()
1022 			nvmet_tcp_build_pdu_iovec(queue->cmd);  in nvmet_tcp_done_recv_pdu()
1026 		nvmet_tcp_queue_response(&queue->cmd->req);  in nvmet_tcp_done_recv_pdu()
1030 	queue->cmd->req.execute(&queue->cmd->req);  in nvmet_tcp_done_recv_pdu()
1032 	nvmet_prepare_receive_pdu(queue);  in nvmet_tcp_done_recv_pdu()
1064 static int nvmet_tcp_try_recv_pdu(struct nvmet_tcp_queue *queue)  in nvmet_tcp_try_recv_pdu()  argument
1066 	struct nvme_tcp_hdr *hdr = &queue->pdu.cmd.hdr;  in nvmet_tcp_try_recv_pdu()
1072 	iov.iov_base = (void *)&queue->pdu + queue->offset;  in nvmet_tcp_try_recv_pdu()
1073 	iov.iov_len = queue->left;  in nvmet_tcp_try_recv_pdu()
1074 	len = kernel_recvmsg(queue->sock, &msg, &iov, 1,  in nvmet_tcp_try_recv_pdu()
1079 	queue->offset += len;  in nvmet_tcp_try_recv_pdu()
1080 	queue->left -= len;  in nvmet_tcp_try_recv_pdu()
1081 	if (queue->left)  in nvmet_tcp_try_recv_pdu()
1084 	if (queue->offset == sizeof(struct nvme_tcp_hdr)) {  in nvmet_tcp_try_recv_pdu()
1085 		u8 hdgst = nvmet_tcp_hdgst_len(queue);  in nvmet_tcp_try_recv_pdu()
1089 			nvmet_tcp_fatal_error(queue);  in nvmet_tcp_try_recv_pdu()
1098 		queue->left = hdr->hlen - queue->offset + hdgst;  in nvmet_tcp_try_recv_pdu()
1102 	if (queue->hdr_digest &&  in nvmet_tcp_try_recv_pdu()
1103 	    nvmet_tcp_verify_hdgst(queue, &queue->pdu, hdr->hlen)) {  in nvmet_tcp_try_recv_pdu()
1104 		nvmet_tcp_fatal_error(queue); /* fatal */  in nvmet_tcp_try_recv_pdu()
1108 	if (queue->data_digest &&  in nvmet_tcp_try_recv_pdu()
1109 	    nvmet_tcp_check_ddgst(queue, &queue->pdu)) {  in nvmet_tcp_try_recv_pdu()
1110 		nvmet_tcp_fatal_error(queue); /* fatal */  in nvmet_tcp_try_recv_pdu()
1114 	return nvmet_tcp_done_recv_pdu(queue);  in nvmet_tcp_try_recv_pdu()
1119 	struct nvmet_tcp_queue *queue = cmd->queue;  in nvmet_tcp_prep_recv_ddgst()  local
1121 	nvmet_tcp_calc_ddgst(queue->rcv_hash, cmd);  in nvmet_tcp_prep_recv_ddgst()
1122 	queue->offset = 0;  in nvmet_tcp_prep_recv_ddgst()
1123 	queue->left = NVME_TCP_DIGEST_LENGTH;  in nvmet_tcp_prep_recv_ddgst()
1124 	queue->rcv_state = NVMET_TCP_RECV_DDGST;  in nvmet_tcp_prep_recv_ddgst()
1127 static int nvmet_tcp_try_recv_data(struct nvmet_tcp_queue *queue)  in nvmet_tcp_try_recv_data()  argument
1129 	struct nvmet_tcp_cmd  *cmd = queue->cmd;  in nvmet_tcp_try_recv_data()
1133 		ret = sock_recvmsg(cmd->queue->sock, &cmd->recv_msg,  in nvmet_tcp_try_recv_data()
1142 	if (queue->data_digest) {  in nvmet_tcp_try_recv_data()
1150 	nvmet_prepare_receive_pdu(queue);  in nvmet_tcp_try_recv_data()
1154 static int nvmet_tcp_try_recv_ddgst(struct nvmet_tcp_queue *queue)  in nvmet_tcp_try_recv_ddgst()  argument
1156 	struct nvmet_tcp_cmd *cmd = queue->cmd;  in nvmet_tcp_try_recv_ddgst()
1160 		.iov_base = (void *)&cmd->recv_ddgst + queue->offset,  in nvmet_tcp_try_recv_ddgst()
1161 		.iov_len = queue->left  in nvmet_tcp_try_recv_ddgst()
1164 	ret = kernel_recvmsg(queue->sock, &msg, &iov, 1,  in nvmet_tcp_try_recv_ddgst()
1169 	queue->offset += ret;  in nvmet_tcp_try_recv_ddgst()
1170 	queue->left -= ret;  in nvmet_tcp_try_recv_ddgst()
1171 	if (queue->left)  in nvmet_tcp_try_recv_ddgst()
1174 	if (queue->data_digest && cmd->exp_ddgst != cmd->recv_ddgst) {  in nvmet_tcp_try_recv_ddgst()
1176 			queue->idx, cmd->req.cmd->common.command_id,  in nvmet_tcp_try_recv_ddgst()
1177 			queue->pdu.cmd.hdr.type, le32_to_cpu(cmd->recv_ddgst),  in nvmet_tcp_try_recv_ddgst()
1181 		nvmet_tcp_fatal_error(queue);  in nvmet_tcp_try_recv_ddgst()
1191 	nvmet_prepare_receive_pdu(queue);  in nvmet_tcp_try_recv_ddgst()
1195 static int nvmet_tcp_try_recv_one(struct nvmet_tcp_queue *queue)  in nvmet_tcp_try_recv_one()  argument
1199 	if (unlikely(queue->rcv_state == NVMET_TCP_RECV_ERR))  in nvmet_tcp_try_recv_one()
1202 	if (queue->rcv_state == NVMET_TCP_RECV_PDU) {  in nvmet_tcp_try_recv_one()
1203 		result = nvmet_tcp_try_recv_pdu(queue);  in nvmet_tcp_try_recv_one()
1208 	if (queue->rcv_state == NVMET_TCP_RECV_DATA) {  in nvmet_tcp_try_recv_one()
1209 		result = nvmet_tcp_try_recv_data(queue);  in nvmet_tcp_try_recv_one()
1214 	if (queue->rcv_state == NVMET_TCP_RECV_DDGST) {  in nvmet_tcp_try_recv_one()
1215 		result = nvmet_tcp_try_recv_ddgst(queue);  in nvmet_tcp_try_recv_one()
1229 static int nvmet_tcp_try_recv(struct nvmet_tcp_queue *queue,  in nvmet_tcp_try_recv()  argument
1235 		ret = nvmet_tcp_try_recv_one(queue);  in nvmet_tcp_try_recv()
1237 			nvmet_tcp_socket_error(queue, ret);  in nvmet_tcp_try_recv()
1248 static void nvmet_tcp_schedule_release_queue(struct nvmet_tcp_queue *queue)  in nvmet_tcp_schedule_release_queue()  argument
1250 	spin_lock(&queue->state_lock);  in nvmet_tcp_schedule_release_queue()
1251 	if (queue->state != NVMET_TCP_Q_DISCONNECTING) {  in nvmet_tcp_schedule_release_queue()
1252 		queue->state = NVMET_TCP_Q_DISCONNECTING;  in nvmet_tcp_schedule_release_queue()
1253 		queue_work(nvmet_wq, &queue->release_work);  in nvmet_tcp_schedule_release_queue()
1255 	spin_unlock(&queue->state_lock);  in nvmet_tcp_schedule_release_queue()
1258 static inline void nvmet_tcp_arm_queue_deadline(struct nvmet_tcp_queue *queue)  in nvmet_tcp_arm_queue_deadline()  argument
1260 	queue->poll_end = jiffies + usecs_to_jiffies(idle_poll_period_usecs);  in nvmet_tcp_arm_queue_deadline()
1263 static bool nvmet_tcp_check_queue_deadline(struct nvmet_tcp_queue *queue,  in nvmet_tcp_check_queue_deadline()  argument
1270 		nvmet_tcp_arm_queue_deadline(queue);  in nvmet_tcp_check_queue_deadline()
1272 	return !time_after(jiffies, queue->poll_end);  in nvmet_tcp_check_queue_deadline()
1277 	struct nvmet_tcp_queue *queue =  in nvmet_tcp_io_work()  local
1285 		ret = nvmet_tcp_try_recv(queue, NVMET_TCP_RECV_BUDGET, &ops);  in nvmet_tcp_io_work()
1291 		ret = nvmet_tcp_try_send(queue, NVMET_TCP_SEND_BUDGET, &ops);  in nvmet_tcp_io_work()
1303 	if (nvmet_tcp_check_queue_deadline(queue, ops) || pending)  in nvmet_tcp_io_work()
1304 		queue_work_on(queue_cpu(queue), nvmet_tcp_wq, &queue->io_work);  in nvmet_tcp_io_work()
1307 static int nvmet_tcp_alloc_cmd(struct nvmet_tcp_queue *queue,  in nvmet_tcp_alloc_cmd()  argument
1310 	u8 hdgst = nvmet_tcp_hdgst_len(queue);  in nvmet_tcp_alloc_cmd()
1312 	c->queue = queue;  in nvmet_tcp_alloc_cmd()
1313 	c->req.port = queue->port->nport;  in nvmet_tcp_alloc_cmd()
1315 	c->cmd_pdu = page_frag_alloc(&queue->pf_cache,  in nvmet_tcp_alloc_cmd()
1321 	c->rsp_pdu = page_frag_alloc(&queue->pf_cache,  in nvmet_tcp_alloc_cmd()
1327 	c->data_pdu = page_frag_alloc(&queue->pf_cache,  in nvmet_tcp_alloc_cmd()
1332 	c->r2t_pdu = page_frag_alloc(&queue->pf_cache,  in nvmet_tcp_alloc_cmd()
1339 	list_add_tail(&c->entry, &queue->free_list);  in nvmet_tcp_alloc_cmd()
1359 static int nvmet_tcp_alloc_cmds(struct nvmet_tcp_queue *queue)  in nvmet_tcp_alloc_cmds()  argument
1362 	int i, ret = -EINVAL, nr_cmds = queue->nr_cmds;  in nvmet_tcp_alloc_cmds()
1369 		ret = nvmet_tcp_alloc_cmd(queue, cmds + i);  in nvmet_tcp_alloc_cmds()
1374 	queue->cmds = cmds;  in nvmet_tcp_alloc_cmds()
1385 static void nvmet_tcp_free_cmds(struct nvmet_tcp_queue *queue)  in nvmet_tcp_free_cmds()  argument
1387 	struct nvmet_tcp_cmd *cmds = queue->cmds;  in nvmet_tcp_free_cmds()
1390 	for (i = 0; i < queue->nr_cmds; i++)  in nvmet_tcp_free_cmds()
1393 	nvmet_tcp_free_cmd(&queue->connect);  in nvmet_tcp_free_cmds()
1397 static void nvmet_tcp_restore_socket_callbacks(struct nvmet_tcp_queue *queue)  in nvmet_tcp_restore_socket_callbacks()  argument
1399 	struct socket *sock = queue->sock;  in nvmet_tcp_restore_socket_callbacks()
1402 	sock->sk->sk_data_ready =  queue->data_ready;  in nvmet_tcp_restore_socket_callbacks()
1403 	sock->sk->sk_state_change = queue->state_change;  in nvmet_tcp_restore_socket_callbacks()
1404 	sock->sk->sk_write_space = queue->write_space;  in nvmet_tcp_restore_socket_callbacks()
1409 static void nvmet_tcp_uninit_data_in_cmds(struct nvmet_tcp_queue *queue)  in nvmet_tcp_uninit_data_in_cmds()  argument
1411 	struct nvmet_tcp_cmd *cmd = queue->cmds;  in nvmet_tcp_uninit_data_in_cmds()
1414 	for (i = 0; i < queue->nr_cmds; i++, cmd++) {  in nvmet_tcp_uninit_data_in_cmds()
1419 	if (!queue->nr_cmds && nvmet_tcp_need_data_in(&queue->connect)) {  in nvmet_tcp_uninit_data_in_cmds()
1421 		nvmet_req_uninit(&queue->connect.req);  in nvmet_tcp_uninit_data_in_cmds()
1425 static void nvmet_tcp_free_cmd_data_in_buffers(struct nvmet_tcp_queue *queue)  in nvmet_tcp_free_cmd_data_in_buffers()  argument
1427 	struct nvmet_tcp_cmd *cmd = queue->cmds;  in nvmet_tcp_free_cmd_data_in_buffers()
1430 	for (i = 0; i < queue->nr_cmds; i++, cmd++) {  in nvmet_tcp_free_cmd_data_in_buffers()
1435 	if (!queue->nr_cmds && nvmet_tcp_need_data_in(&queue->connect))  in nvmet_tcp_free_cmd_data_in_buffers()
1436 		nvmet_tcp_free_cmd_buffers(&queue->connect);  in nvmet_tcp_free_cmd_data_in_buffers()
1442 	struct nvmet_tcp_queue *queue =  in nvmet_tcp_release_queue_work()  local
1446 	list_del_init(&queue->queue_list);  in nvmet_tcp_release_queue_work()
1449 	nvmet_tcp_restore_socket_callbacks(queue);  in nvmet_tcp_release_queue_work()
1450 	cancel_work_sync(&queue->io_work);  in nvmet_tcp_release_queue_work()
1452 	queue->rcv_state = NVMET_TCP_RECV_ERR;  in nvmet_tcp_release_queue_work()
1454 	nvmet_tcp_uninit_data_in_cmds(queue);  in nvmet_tcp_release_queue_work()
1455 	nvmet_sq_destroy(&queue->nvme_sq);  in nvmet_tcp_release_queue_work()
1456 	cancel_work_sync(&queue->io_work);  in nvmet_tcp_release_queue_work()
1457 	nvmet_tcp_free_cmd_data_in_buffers(queue);  in nvmet_tcp_release_queue_work()
1458 	sock_release(queue->sock);  in nvmet_tcp_release_queue_work()
1459 	nvmet_tcp_free_cmds(queue);  in nvmet_tcp_release_queue_work()
1460 	if (queue->hdr_digest || queue->data_digest)  in nvmet_tcp_release_queue_work()
1461 		nvmet_tcp_free_crypto(queue);  in nvmet_tcp_release_queue_work()
1462 	ida_free(&nvmet_tcp_queue_ida, queue->idx);  in nvmet_tcp_release_queue_work()
1464 	page = virt_to_head_page(queue->pf_cache.va);  in nvmet_tcp_release_queue_work()
1465 	__page_frag_cache_drain(page, queue->pf_cache.pagecnt_bias);  in nvmet_tcp_release_queue_work()
1466 	kfree(queue);  in nvmet_tcp_release_queue_work()
1471 	struct nvmet_tcp_queue *queue;  in nvmet_tcp_data_ready()  local
1474 	queue = sk->sk_user_data;  in nvmet_tcp_data_ready()
1475 	if (likely(queue))  in nvmet_tcp_data_ready()
1476 		queue_work_on(queue_cpu(queue), nvmet_tcp_wq, &queue->io_work);  in nvmet_tcp_data_ready()
1482 	struct nvmet_tcp_queue *queue;  in nvmet_tcp_write_space()  local
1485 	queue = sk->sk_user_data;  in nvmet_tcp_write_space()
1486 	if (unlikely(!queue))  in nvmet_tcp_write_space()
1489 	if (unlikely(queue->state == NVMET_TCP_Q_CONNECTING)) {  in nvmet_tcp_write_space()
1490 		queue->write_space(sk);  in nvmet_tcp_write_space()
1496 		queue_work_on(queue_cpu(queue), nvmet_tcp_wq, &queue->io_work);  in nvmet_tcp_write_space()
1504 	struct nvmet_tcp_queue *queue;  in nvmet_tcp_state_change()  local
1507 	queue = sk->sk_user_data;  in nvmet_tcp_state_change()
1508 	if (!queue)  in nvmet_tcp_state_change()
1519 		nvmet_tcp_schedule_release_queue(queue);  in nvmet_tcp_state_change()
1523 			queue->idx, sk->sk_state);  in nvmet_tcp_state_change()
1529 static int nvmet_tcp_set_queue_sock(struct nvmet_tcp_queue *queue)  in nvmet_tcp_set_queue_sock()  argument
1531 	struct socket *sock = queue->sock;  in nvmet_tcp_set_queue_sock()
1536 		(struct sockaddr *)&queue->sockaddr);  in nvmet_tcp_set_queue_sock()
1541 		(struct sockaddr *)&queue->sockaddr_peer);  in nvmet_tcp_set_queue_sock()
1568 		sock->sk->sk_user_data = queue;  in nvmet_tcp_set_queue_sock()
1569 		queue->data_ready = sock->sk->sk_data_ready;  in nvmet_tcp_set_queue_sock()
1571 		queue->state_change = sock->sk->sk_state_change;  in nvmet_tcp_set_queue_sock()
1573 		queue->write_space = sock->sk->sk_write_space;  in nvmet_tcp_set_queue_sock()
1576 			nvmet_tcp_arm_queue_deadline(queue);  in nvmet_tcp_set_queue_sock()
1577 		queue_work_on(queue_cpu(queue), nvmet_tcp_wq, &queue->io_work);  in nvmet_tcp_set_queue_sock()
1587 	struct nvmet_tcp_queue *queue;  in nvmet_tcp_alloc_queue()  local
1590 	queue = kzalloc(sizeof(*queue), GFP_KERNEL);  in nvmet_tcp_alloc_queue()
1591 	if (!queue)  in nvmet_tcp_alloc_queue()
1594 	INIT_WORK(&queue->release_work, nvmet_tcp_release_queue_work);  in nvmet_tcp_alloc_queue()
1595 	INIT_WORK(&queue->io_work, nvmet_tcp_io_work);  in nvmet_tcp_alloc_queue()
1596 	queue->sock = newsock;  in nvmet_tcp_alloc_queue()
1597 	queue->port = port;  in nvmet_tcp_alloc_queue()
1598 	queue->nr_cmds = 0;  in nvmet_tcp_alloc_queue()
1599 	spin_lock_init(&queue->state_lock);  in nvmet_tcp_alloc_queue()
1600 	queue->state = NVMET_TCP_Q_CONNECTING;  in nvmet_tcp_alloc_queue()
1601 	INIT_LIST_HEAD(&queue->free_list);  in nvmet_tcp_alloc_queue()
1602 	init_llist_head(&queue->resp_list);  in nvmet_tcp_alloc_queue()
1603 	INIT_LIST_HEAD(&queue->resp_send_list);  in nvmet_tcp_alloc_queue()
1605 	queue->idx = ida_alloc(&nvmet_tcp_queue_ida, GFP_KERNEL);  in nvmet_tcp_alloc_queue()
1606 	if (queue->idx < 0) {  in nvmet_tcp_alloc_queue()
1607 		ret = queue->idx;  in nvmet_tcp_alloc_queue()
1611 	ret = nvmet_tcp_alloc_cmd(queue, &queue->connect);  in nvmet_tcp_alloc_queue()
1615 	ret = nvmet_sq_init(&queue->nvme_sq);  in nvmet_tcp_alloc_queue()
1619 	nvmet_prepare_receive_pdu(queue);  in nvmet_tcp_alloc_queue()
1622 	list_add_tail(&queue->queue_list, &nvmet_tcp_queue_list);  in nvmet_tcp_alloc_queue()
1625 	ret = nvmet_tcp_set_queue_sock(queue);  in nvmet_tcp_alloc_queue()
1632 	list_del_init(&queue->queue_list);  in nvmet_tcp_alloc_queue()
1634 	nvmet_sq_destroy(&queue->nvme_sq);  in nvmet_tcp_alloc_queue()
1636 	nvmet_tcp_free_cmd(&queue->connect);  in nvmet_tcp_alloc_queue()
1638 	ida_free(&nvmet_tcp_queue_ida, queue->idx);  in nvmet_tcp_alloc_queue()
1640 	kfree(queue);  in nvmet_tcp_alloc_queue()
1761 	struct nvmet_tcp_queue *queue;  in nvmet_tcp_destroy_port_queues()  local
1764 	list_for_each_entry(queue, &nvmet_tcp_queue_list, queue_list)  in nvmet_tcp_destroy_port_queues()
1765 		if (queue->port == port)  in nvmet_tcp_destroy_port_queues()
1766 			kernel_sock_shutdown(queue->sock, SHUT_RDWR);  in nvmet_tcp_destroy_port_queues()
1791 	struct nvmet_tcp_queue *queue;  in nvmet_tcp_delete_ctrl()  local
1794 	list_for_each_entry(queue, &nvmet_tcp_queue_list, queue_list)  in nvmet_tcp_delete_ctrl()
1795 		if (queue->nvme_sq.ctrl == ctrl)  in nvmet_tcp_delete_ctrl()
1796 			kernel_sock_shutdown(queue->sock, SHUT_RDWR);  in nvmet_tcp_delete_ctrl()
1802 	struct nvmet_tcp_queue *queue =  in nvmet_tcp_install_queue()  local
1810 	queue->nr_cmds = sq->size * 2;  in nvmet_tcp_install_queue()
1811 	if (nvmet_tcp_alloc_cmds(queue))  in nvmet_tcp_install_queue()
1824 		struct nvmet_tcp_queue *queue = cmd->queue;  in nvmet_tcp_disc_port_addr()  local
1826 		sprintf(traddr, "%pISc", (struct sockaddr *)&queue->sockaddr);  in nvmet_tcp_disc_port_addr()
1865 	struct nvmet_tcp_queue *queue;  in nvmet_tcp_exit()  local
1871 	list_for_each_entry(queue, &nvmet_tcp_queue_list, queue_list)  in nvmet_tcp_exit()
1872 		kernel_sock_shutdown(queue->sock, SHUT_RDWR);  in nvmet_tcp_exit()