^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * NVMe over Fabrics TCP host.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (c) 2018 Lightbits Labs. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/nvme-tcp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <net/sock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <net/tcp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/blk-mq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <crypto/hash.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <net/busy_poll.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include "nvme.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include "fabrics.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) struct nvme_tcp_queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) /* Define the socket priority to use for connections were it is desirable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * that the NIC consider performing optimized packet processing or filtering.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * A non-zero value being sufficient to indicate general consideration of any
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * possible optimization. Making it a module param allows for alternative
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * values that may be unique for some NIC implementations.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) static int so_priority;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) module_param(so_priority, int, 0644);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) MODULE_PARM_DESC(so_priority, "nvme tcp socket optimize priority");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #ifdef CONFIG_DEBUG_LOCK_ALLOC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) /* lockdep can detect a circular dependency of the form
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) * sk_lock -> mmap_lock (page fault) -> fs locks -> sk_lock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * because dependencies are tracked for both nvme-tcp and user contexts. Using
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * a separate class prevents lockdep from conflating nvme-tcp socket use with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) * user-space socket API use.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) static struct lock_class_key nvme_tcp_sk_key[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) static struct lock_class_key nvme_tcp_slock_key[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) static void nvme_tcp_reclassify_socket(struct socket *sock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) struct sock *sk = sock->sk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) if (WARN_ON_ONCE(!sock_allow_reclassification(sk)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) switch (sk->sk_family) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) case AF_INET:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) sock_lock_init_class_and_name(sk, "slock-AF_INET-NVME",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) &nvme_tcp_slock_key[0],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) "sk_lock-AF_INET-NVME",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) &nvme_tcp_sk_key[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) case AF_INET6:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) sock_lock_init_class_and_name(sk, "slock-AF_INET6-NVME",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) &nvme_tcp_slock_key[1],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) "sk_lock-AF_INET6-NVME",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) &nvme_tcp_sk_key[1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) WARN_ON_ONCE(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) static void nvme_tcp_reclassify_socket(struct socket *sock) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) enum nvme_tcp_send_state {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) NVME_TCP_SEND_CMD_PDU = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) NVME_TCP_SEND_H2C_PDU,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) NVME_TCP_SEND_DATA,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) NVME_TCP_SEND_DDGST,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) struct nvme_tcp_request {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) struct nvme_request req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) void *pdu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) struct nvme_tcp_queue *queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) u32 data_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) u32 pdu_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) u32 pdu_sent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) u16 ttag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) struct list_head entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) struct llist_node lentry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) __le32 ddgst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) struct bio *curr_bio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) struct iov_iter iter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) /* send state */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) size_t offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) size_t data_sent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) enum nvme_tcp_send_state state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) enum nvme_tcp_queue_flags {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) NVME_TCP_Q_ALLOCATED = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) NVME_TCP_Q_LIVE = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) NVME_TCP_Q_POLLING = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) enum nvme_tcp_recv_state {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) NVME_TCP_RECV_PDU = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) NVME_TCP_RECV_DATA,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) NVME_TCP_RECV_DDGST,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) struct nvme_tcp_ctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) struct nvme_tcp_queue {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) struct socket *sock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) struct work_struct io_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) int io_cpu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) struct mutex queue_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) struct mutex send_mutex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) struct llist_head req_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) struct list_head send_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) bool more_requests;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) /* recv state */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) void *pdu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) int pdu_remaining;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) int pdu_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) size_t data_remaining;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) size_t ddgst_remaining;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) unsigned int nr_cqe;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) /* send state */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) struct nvme_tcp_request *request;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) int queue_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) size_t cmnd_capsule_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) struct nvme_tcp_ctrl *ctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) bool rd_enabled;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) bool hdr_digest;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) bool data_digest;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) struct ahash_request *rcv_hash;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) struct ahash_request *snd_hash;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) __le32 exp_ddgst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) __le32 recv_ddgst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) struct page_frag_cache pf_cache;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) void (*state_change)(struct sock *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) void (*data_ready)(struct sock *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) void (*write_space)(struct sock *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) struct nvme_tcp_ctrl {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) /* read only in the hot path */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) struct nvme_tcp_queue *queues;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) struct blk_mq_tag_set tag_set;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) /* other member variables */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) struct blk_mq_tag_set admin_tag_set;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) struct sockaddr_storage addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) struct sockaddr_storage src_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) struct nvme_ctrl ctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) struct work_struct err_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) struct delayed_work connect_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) struct nvme_tcp_request async_req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) u32 io_queues[HCTX_MAX_TYPES];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) static LIST_HEAD(nvme_tcp_ctrl_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) static DEFINE_MUTEX(nvme_tcp_ctrl_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) static struct workqueue_struct *nvme_tcp_wq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) static const struct blk_mq_ops nvme_tcp_mq_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) static const struct blk_mq_ops nvme_tcp_admin_mq_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) static int nvme_tcp_try_send(struct nvme_tcp_queue *queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) static inline struct nvme_tcp_ctrl *to_tcp_ctrl(struct nvme_ctrl *ctrl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) return container_of(ctrl, struct nvme_tcp_ctrl, ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) static inline int nvme_tcp_queue_id(struct nvme_tcp_queue *queue)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) return queue - queue->ctrl->queues;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) static inline struct blk_mq_tags *nvme_tcp_tagset(struct nvme_tcp_queue *queue)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) u32 queue_idx = nvme_tcp_queue_id(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) if (queue_idx == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) return queue->ctrl->admin_tag_set.tags[queue_idx];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) return queue->ctrl->tag_set.tags[queue_idx - 1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) static inline u8 nvme_tcp_hdgst_len(struct nvme_tcp_queue *queue)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) return queue->hdr_digest ? NVME_TCP_DIGEST_LENGTH : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) static inline u8 nvme_tcp_ddgst_len(struct nvme_tcp_queue *queue)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) return queue->data_digest ? NVME_TCP_DIGEST_LENGTH : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) static inline size_t nvme_tcp_inline_data_size(struct nvme_tcp_queue *queue)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) return queue->cmnd_capsule_len - sizeof(struct nvme_command);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) static inline bool nvme_tcp_async_req(struct nvme_tcp_request *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) return req == &req->queue->ctrl->async_req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) static inline bool nvme_tcp_has_inline_data(struct nvme_tcp_request *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) struct request *rq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) if (unlikely(nvme_tcp_async_req(req)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) return false; /* async events don't have a request */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) rq = blk_mq_rq_from_pdu(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) return rq_data_dir(rq) == WRITE && req->data_len &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) req->data_len <= nvme_tcp_inline_data_size(req->queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) static inline struct page *nvme_tcp_req_cur_page(struct nvme_tcp_request *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) return req->iter.bvec->bv_page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) static inline size_t nvme_tcp_req_cur_offset(struct nvme_tcp_request *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) return req->iter.bvec->bv_offset + req->iter.iov_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) static inline size_t nvme_tcp_req_cur_length(struct nvme_tcp_request *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) return min_t(size_t, iov_iter_single_seg_count(&req->iter),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) req->pdu_len - req->pdu_sent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) static inline size_t nvme_tcp_req_offset(struct nvme_tcp_request *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) return req->iter.iov_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) static inline size_t nvme_tcp_pdu_data_left(struct nvme_tcp_request *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) return rq_data_dir(blk_mq_rq_from_pdu(req)) == WRITE ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) req->pdu_len - req->pdu_sent : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) static inline size_t nvme_tcp_pdu_last_send(struct nvme_tcp_request *req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) return nvme_tcp_pdu_data_left(req) <= len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) static void nvme_tcp_init_iter(struct nvme_tcp_request *req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) unsigned int dir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) struct request *rq = blk_mq_rq_from_pdu(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) struct bio_vec *vec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) unsigned int size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) int nsegs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) size_t offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) if (rq->rq_flags & RQF_SPECIAL_PAYLOAD) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) vec = &rq->special_vec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) nsegs = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) size = blk_rq_payload_bytes(rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) struct bio *bio = req->curr_bio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) vec = __bvec_iter_bvec(bio->bi_io_vec, bio->bi_iter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) nsegs = bio_segments(bio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) size = bio->bi_iter.bi_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) offset = bio->bi_iter.bi_bvec_done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) iov_iter_bvec(&req->iter, dir, vec, nsegs, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) req->iter.iov_offset = offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) static inline void nvme_tcp_advance_req(struct nvme_tcp_request *req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) req->data_sent += len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) req->pdu_sent += len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) iov_iter_advance(&req->iter, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) if (!iov_iter_count(&req->iter) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) req->data_sent < req->data_len) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) req->curr_bio = req->curr_bio->bi_next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) nvme_tcp_init_iter(req, WRITE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) static inline void nvme_tcp_send_all(struct nvme_tcp_queue *queue)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) /* drain the send queue as much as we can... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) ret = nvme_tcp_try_send(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) } while (ret > 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) static inline bool nvme_tcp_queue_more(struct nvme_tcp_queue *queue)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) return !list_empty(&queue->send_list) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) !llist_empty(&queue->req_list) || queue->more_requests;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) static inline void nvme_tcp_queue_request(struct nvme_tcp_request *req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) bool sync, bool last)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) struct nvme_tcp_queue *queue = req->queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) bool empty;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) empty = llist_add(&req->lentry, &queue->req_list) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) list_empty(&queue->send_list) && !queue->request;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) * if we're the first on the send_list and we can try to send
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) * directly, otherwise queue io_work. Also, only do that if we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) * are on the same cpu, so we don't introduce contention.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) if (queue->io_cpu == raw_smp_processor_id() &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) sync && empty && mutex_trylock(&queue->send_mutex)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) queue->more_requests = !last;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) nvme_tcp_send_all(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) queue->more_requests = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) mutex_unlock(&queue->send_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) if (last && nvme_tcp_queue_more(queue))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) queue_work_on(queue->io_cpu, nvme_tcp_wq, &queue->io_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) static void nvme_tcp_process_req_list(struct nvme_tcp_queue *queue)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) struct nvme_tcp_request *req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) struct llist_node *node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) for (node = llist_del_all(&queue->req_list); node; node = node->next) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) req = llist_entry(node, struct nvme_tcp_request, lentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) list_add(&req->entry, &queue->send_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) static inline struct nvme_tcp_request *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) nvme_tcp_fetch_request(struct nvme_tcp_queue *queue)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) struct nvme_tcp_request *req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) req = list_first_entry_or_null(&queue->send_list,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) struct nvme_tcp_request, entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) if (!req) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) nvme_tcp_process_req_list(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) req = list_first_entry_or_null(&queue->send_list,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) struct nvme_tcp_request, entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) if (unlikely(!req))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) list_del(&req->entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) return req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) static inline void nvme_tcp_ddgst_final(struct ahash_request *hash,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) __le32 *dgst)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) ahash_request_set_crypt(hash, NULL, (u8 *)dgst, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) crypto_ahash_final(hash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) static inline void nvme_tcp_ddgst_update(struct ahash_request *hash,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) struct page *page, off_t off, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) struct scatterlist sg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) sg_init_marker(&sg, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) sg_set_page(&sg, page, len, off);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) ahash_request_set_crypt(hash, &sg, NULL, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) crypto_ahash_update(hash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) static inline void nvme_tcp_hdgst(struct ahash_request *hash,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) void *pdu, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) struct scatterlist sg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) sg_init_one(&sg, pdu, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) ahash_request_set_crypt(hash, &sg, pdu + len, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) crypto_ahash_digest(hash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) static int nvme_tcp_verify_hdgst(struct nvme_tcp_queue *queue,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) void *pdu, size_t pdu_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) struct nvme_tcp_hdr *hdr = pdu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) __le32 recv_digest;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) __le32 exp_digest;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) if (unlikely(!(hdr->flags & NVME_TCP_F_HDGST))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) dev_err(queue->ctrl->ctrl.device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) "queue %d: header digest flag is cleared\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) nvme_tcp_queue_id(queue));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) return -EPROTO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) recv_digest = *(__le32 *)(pdu + hdr->hlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) nvme_tcp_hdgst(queue->rcv_hash, pdu, pdu_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) exp_digest = *(__le32 *)(pdu + hdr->hlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) if (recv_digest != exp_digest) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) dev_err(queue->ctrl->ctrl.device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) "header digest error: recv %#x expected %#x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) le32_to_cpu(recv_digest), le32_to_cpu(exp_digest));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) static int nvme_tcp_check_ddgst(struct nvme_tcp_queue *queue, void *pdu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) struct nvme_tcp_hdr *hdr = pdu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) u8 digest_len = nvme_tcp_hdgst_len(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) u32 len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) len = le32_to_cpu(hdr->plen) - hdr->hlen -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) ((hdr->flags & NVME_TCP_F_HDGST) ? digest_len : 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) if (unlikely(len && !(hdr->flags & NVME_TCP_F_DDGST))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) dev_err(queue->ctrl->ctrl.device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) "queue %d: data digest flag is cleared\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) nvme_tcp_queue_id(queue));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) return -EPROTO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) crypto_ahash_init(queue->rcv_hash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) static void nvme_tcp_exit_request(struct blk_mq_tag_set *set,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) struct request *rq, unsigned int hctx_idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) struct nvme_tcp_request *req = blk_mq_rq_to_pdu(rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) page_frag_free(req->pdu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) static int nvme_tcp_init_request(struct blk_mq_tag_set *set,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) struct request *rq, unsigned int hctx_idx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) unsigned int numa_node)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) struct nvme_tcp_ctrl *ctrl = set->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) struct nvme_tcp_request *req = blk_mq_rq_to_pdu(rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) int queue_idx = (set == &ctrl->tag_set) ? hctx_idx + 1 : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) struct nvme_tcp_queue *queue = &ctrl->queues[queue_idx];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) u8 hdgst = nvme_tcp_hdgst_len(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) req->pdu = page_frag_alloc(&queue->pf_cache,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) sizeof(struct nvme_tcp_cmd_pdu) + hdgst,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) GFP_KERNEL | __GFP_ZERO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) if (!req->pdu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) req->queue = queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) nvme_req(rq)->ctrl = &ctrl->ctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) static int nvme_tcp_init_hctx(struct blk_mq_hw_ctx *hctx, void *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) unsigned int hctx_idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) struct nvme_tcp_ctrl *ctrl = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) struct nvme_tcp_queue *queue = &ctrl->queues[hctx_idx + 1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) hctx->driver_data = queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) static int nvme_tcp_init_admin_hctx(struct blk_mq_hw_ctx *hctx, void *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) unsigned int hctx_idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) struct nvme_tcp_ctrl *ctrl = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) struct nvme_tcp_queue *queue = &ctrl->queues[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) hctx->driver_data = queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) static enum nvme_tcp_recv_state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) nvme_tcp_recv_state(struct nvme_tcp_queue *queue)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) return (queue->pdu_remaining) ? NVME_TCP_RECV_PDU :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) (queue->ddgst_remaining) ? NVME_TCP_RECV_DDGST :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) NVME_TCP_RECV_DATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) static void nvme_tcp_init_recv_ctx(struct nvme_tcp_queue *queue)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) queue->pdu_remaining = sizeof(struct nvme_tcp_rsp_pdu) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) nvme_tcp_hdgst_len(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) queue->pdu_offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) queue->data_remaining = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) queue->ddgst_remaining = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) static void nvme_tcp_error_recovery(struct nvme_ctrl *ctrl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) if (!nvme_change_ctrl_state(ctrl, NVME_CTRL_RESETTING))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) dev_warn(ctrl->device, "starting error recovery\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) queue_work(nvme_reset_wq, &to_tcp_ctrl(ctrl)->err_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) static int nvme_tcp_process_nvme_cqe(struct nvme_tcp_queue *queue,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) struct nvme_completion *cqe)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) struct request *rq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) rq = nvme_find_rq(nvme_tcp_tagset(queue), cqe->command_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) if (!rq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) dev_err(queue->ctrl->ctrl.device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) "got bad cqe.command_id %#x on queue %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) cqe->command_id, nvme_tcp_queue_id(queue));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) nvme_tcp_error_recovery(&queue->ctrl->ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) if (!nvme_try_complete_req(rq, cqe->status, cqe->result))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) nvme_complete_rq(rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) queue->nr_cqe++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) static int nvme_tcp_handle_c2h_data(struct nvme_tcp_queue *queue,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) struct nvme_tcp_data_pdu *pdu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) struct request *rq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) rq = nvme_find_rq(nvme_tcp_tagset(queue), pdu->command_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) if (!rq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) dev_err(queue->ctrl->ctrl.device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) "got bad c2hdata.command_id %#x on queue %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) pdu->command_id, nvme_tcp_queue_id(queue));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) if (!blk_rq_payload_bytes(rq)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) dev_err(queue->ctrl->ctrl.device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) "queue %d tag %#x unexpected data\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) nvme_tcp_queue_id(queue), rq->tag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) queue->data_remaining = le32_to_cpu(pdu->data_length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) if (pdu->hdr.flags & NVME_TCP_F_DATA_SUCCESS &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) unlikely(!(pdu->hdr.flags & NVME_TCP_F_DATA_LAST))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) dev_err(queue->ctrl->ctrl.device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) "queue %d tag %#x SUCCESS set but not last PDU\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) nvme_tcp_queue_id(queue), rq->tag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) nvme_tcp_error_recovery(&queue->ctrl->ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) return -EPROTO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) static int nvme_tcp_handle_comp(struct nvme_tcp_queue *queue,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) struct nvme_tcp_rsp_pdu *pdu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) struct nvme_completion *cqe = &pdu->cqe;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) * AEN requests are special as they don't time out and can
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) * survive any kind of queue freeze and often don't respond to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) * aborts. We don't even bother to allocate a struct request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) * for them but rather special case them here.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) if (unlikely(nvme_is_aen_req(nvme_tcp_queue_id(queue),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) cqe->command_id)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) nvme_complete_async_event(&queue->ctrl->ctrl, cqe->status,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) &cqe->result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) ret = nvme_tcp_process_nvme_cqe(queue, cqe);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) static int nvme_tcp_setup_h2c_data_pdu(struct nvme_tcp_request *req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) struct nvme_tcp_r2t_pdu *pdu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) struct nvme_tcp_data_pdu *data = req->pdu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) struct nvme_tcp_queue *queue = req->queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) struct request *rq = blk_mq_rq_from_pdu(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) u8 hdgst = nvme_tcp_hdgst_len(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) u8 ddgst = nvme_tcp_ddgst_len(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) req->pdu_len = le32_to_cpu(pdu->r2t_length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) req->pdu_sent = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) if (unlikely(!req->pdu_len)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) dev_err(queue->ctrl->ctrl.device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) "req %d r2t len is %u, probably a bug...\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) rq->tag, req->pdu_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) return -EPROTO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) if (unlikely(req->data_sent + req->pdu_len > req->data_len)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) dev_err(queue->ctrl->ctrl.device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) "req %d r2t len %u exceeded data len %u (%zu sent)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) rq->tag, req->pdu_len, req->data_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) req->data_sent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) return -EPROTO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) if (unlikely(le32_to_cpu(pdu->r2t_offset) < req->data_sent)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) dev_err(queue->ctrl->ctrl.device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) "req %d unexpected r2t offset %u (expected %zu)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) rq->tag, le32_to_cpu(pdu->r2t_offset),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) req->data_sent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) return -EPROTO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) memset(data, 0, sizeof(*data));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) data->hdr.type = nvme_tcp_h2c_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) data->hdr.flags = NVME_TCP_F_DATA_LAST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) if (queue->hdr_digest)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) data->hdr.flags |= NVME_TCP_F_HDGST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) if (queue->data_digest)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) data->hdr.flags |= NVME_TCP_F_DDGST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) data->hdr.hlen = sizeof(*data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) data->hdr.pdo = data->hdr.hlen + hdgst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) data->hdr.plen =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) cpu_to_le32(data->hdr.hlen + hdgst + req->pdu_len + ddgst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) data->ttag = pdu->ttag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) data->command_id = nvme_cid(rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) data->data_offset = pdu->r2t_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) data->data_length = cpu_to_le32(req->pdu_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) static int nvme_tcp_handle_r2t(struct nvme_tcp_queue *queue,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) struct nvme_tcp_r2t_pdu *pdu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) struct nvme_tcp_request *req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) struct request *rq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) rq = nvme_find_rq(nvme_tcp_tagset(queue), pdu->command_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) if (!rq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) dev_err(queue->ctrl->ctrl.device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) "got bad r2t.command_id %#x on queue %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) pdu->command_id, nvme_tcp_queue_id(queue));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) req = blk_mq_rq_to_pdu(rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) ret = nvme_tcp_setup_h2c_data_pdu(req, pdu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) if (unlikely(ret))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) req->state = NVME_TCP_SEND_H2C_PDU;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) req->offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) nvme_tcp_queue_request(req, false, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) static int nvme_tcp_recv_pdu(struct nvme_tcp_queue *queue, struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) unsigned int *offset, size_t *len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) struct nvme_tcp_hdr *hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) char *pdu = queue->pdu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) size_t rcv_len = min_t(size_t, *len, queue->pdu_remaining);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) ret = skb_copy_bits(skb, *offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) &pdu[queue->pdu_offset], rcv_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) if (unlikely(ret))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) queue->pdu_remaining -= rcv_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) queue->pdu_offset += rcv_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) *offset += rcv_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) *len -= rcv_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) if (queue->pdu_remaining)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) hdr = queue->pdu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) if (queue->hdr_digest) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) ret = nvme_tcp_verify_hdgst(queue, queue->pdu, hdr->hlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) if (unlikely(ret))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) if (queue->data_digest) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) ret = nvme_tcp_check_ddgst(queue, queue->pdu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) if (unlikely(ret))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) switch (hdr->type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) case nvme_tcp_c2h_data:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) return nvme_tcp_handle_c2h_data(queue, (void *)queue->pdu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) case nvme_tcp_rsp:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) nvme_tcp_init_recv_ctx(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) return nvme_tcp_handle_comp(queue, (void *)queue->pdu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) case nvme_tcp_r2t:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) nvme_tcp_init_recv_ctx(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) return nvme_tcp_handle_r2t(queue, (void *)queue->pdu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) dev_err(queue->ctrl->ctrl.device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) "unsupported pdu type (%d)\n", hdr->type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) static inline void nvme_tcp_end_request(struct request *rq, u16 status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) union nvme_result res = {};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) if (!nvme_try_complete_req(rq, cpu_to_le16(status << 1), res))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) nvme_complete_rq(rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) static int nvme_tcp_recv_data(struct nvme_tcp_queue *queue, struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) unsigned int *offset, size_t *len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) struct nvme_tcp_data_pdu *pdu = (void *)queue->pdu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) struct request *rq =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) nvme_cid_to_rq(nvme_tcp_tagset(queue), pdu->command_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) struct nvme_tcp_request *req = blk_mq_rq_to_pdu(rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) while (true) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) int recv_len, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) recv_len = min_t(size_t, *len, queue->data_remaining);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) if (!recv_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) if (!iov_iter_count(&req->iter)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) req->curr_bio = req->curr_bio->bi_next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) * If we don`t have any bios it means that controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) * sent more data than we requested, hence error
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) if (!req->curr_bio) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) dev_err(queue->ctrl->ctrl.device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) "queue %d no space in request %#x",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) nvme_tcp_queue_id(queue), rq->tag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) nvme_tcp_init_recv_ctx(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) nvme_tcp_init_iter(req, READ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) /* we can read only from what is left in this bio */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) recv_len = min_t(size_t, recv_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) iov_iter_count(&req->iter));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) if (queue->data_digest)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) ret = skb_copy_and_hash_datagram_iter(skb, *offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) &req->iter, recv_len, queue->rcv_hash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) ret = skb_copy_datagram_iter(skb, *offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) &req->iter, recv_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) dev_err(queue->ctrl->ctrl.device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) "queue %d failed to copy request %#x data",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) nvme_tcp_queue_id(queue), rq->tag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) *len -= recv_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) *offset += recv_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) queue->data_remaining -= recv_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) if (!queue->data_remaining) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) if (queue->data_digest) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) nvme_tcp_ddgst_final(queue->rcv_hash, &queue->exp_ddgst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) queue->ddgst_remaining = NVME_TCP_DIGEST_LENGTH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) if (pdu->hdr.flags & NVME_TCP_F_DATA_SUCCESS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) nvme_tcp_end_request(rq, NVME_SC_SUCCESS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) queue->nr_cqe++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) nvme_tcp_init_recv_ctx(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) static int nvme_tcp_recv_ddgst(struct nvme_tcp_queue *queue,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) struct sk_buff *skb, unsigned int *offset, size_t *len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) struct nvme_tcp_data_pdu *pdu = (void *)queue->pdu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) char *ddgst = (char *)&queue->recv_ddgst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) size_t recv_len = min_t(size_t, *len, queue->ddgst_remaining);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) off_t off = NVME_TCP_DIGEST_LENGTH - queue->ddgst_remaining;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) ret = skb_copy_bits(skb, *offset, &ddgst[off], recv_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) if (unlikely(ret))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) queue->ddgst_remaining -= recv_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) *offset += recv_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) *len -= recv_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) if (queue->ddgst_remaining)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) if (queue->recv_ddgst != queue->exp_ddgst) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) dev_err(queue->ctrl->ctrl.device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) "data digest error: recv %#x expected %#x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) le32_to_cpu(queue->recv_ddgst),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) le32_to_cpu(queue->exp_ddgst));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) if (pdu->hdr.flags & NVME_TCP_F_DATA_SUCCESS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) struct request *rq = nvme_cid_to_rq(nvme_tcp_tagset(queue),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) pdu->command_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) nvme_tcp_end_request(rq, NVME_SC_SUCCESS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) queue->nr_cqe++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) nvme_tcp_init_recv_ctx(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) static int nvme_tcp_recv_skb(read_descriptor_t *desc, struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) unsigned int offset, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) struct nvme_tcp_queue *queue = desc->arg.data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) size_t consumed = len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) int result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) while (len) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) switch (nvme_tcp_recv_state(queue)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) case NVME_TCP_RECV_PDU:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) result = nvme_tcp_recv_pdu(queue, skb, &offset, &len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) case NVME_TCP_RECV_DATA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) result = nvme_tcp_recv_data(queue, skb, &offset, &len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) case NVME_TCP_RECV_DDGST:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) result = nvme_tcp_recv_ddgst(queue, skb, &offset, &len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) result = -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) if (result) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) dev_err(queue->ctrl->ctrl.device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) "receive failed: %d\n", result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) queue->rd_enabled = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) nvme_tcp_error_recovery(&queue->ctrl->ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) return result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) return consumed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) static void nvme_tcp_data_ready(struct sock *sk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) struct nvme_tcp_queue *queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) read_lock_bh(&sk->sk_callback_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) queue = sk->sk_user_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) if (likely(queue && queue->rd_enabled) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) !test_bit(NVME_TCP_Q_POLLING, &queue->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) queue_work_on(queue->io_cpu, nvme_tcp_wq, &queue->io_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) read_unlock_bh(&sk->sk_callback_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) static void nvme_tcp_write_space(struct sock *sk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) struct nvme_tcp_queue *queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) read_lock_bh(&sk->sk_callback_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) queue = sk->sk_user_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) if (likely(queue && sk_stream_is_writeable(sk))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) clear_bit(SOCK_NOSPACE, &sk->sk_socket->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) queue_work_on(queue->io_cpu, nvme_tcp_wq, &queue->io_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) read_unlock_bh(&sk->sk_callback_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) static void nvme_tcp_state_change(struct sock *sk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) struct nvme_tcp_queue *queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) read_lock_bh(&sk->sk_callback_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) queue = sk->sk_user_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) if (!queue)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) switch (sk->sk_state) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) case TCP_CLOSE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) case TCP_CLOSE_WAIT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) case TCP_LAST_ACK:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) case TCP_FIN_WAIT1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) case TCP_FIN_WAIT2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) nvme_tcp_error_recovery(&queue->ctrl->ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) dev_info(queue->ctrl->ctrl.device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) "queue %d socket state %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) nvme_tcp_queue_id(queue), sk->sk_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) queue->state_change(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) done:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) read_unlock_bh(&sk->sk_callback_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) static inline void nvme_tcp_done_send_req(struct nvme_tcp_queue *queue)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) queue->request = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) static void nvme_tcp_fail_request(struct nvme_tcp_request *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) if (nvme_tcp_async_req(req)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) union nvme_result res = {};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) nvme_complete_async_event(&req->queue->ctrl->ctrl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) cpu_to_le16(NVME_SC_HOST_PATH_ERROR), &res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) nvme_tcp_end_request(blk_mq_rq_from_pdu(req),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) NVME_SC_HOST_PATH_ERROR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) static int nvme_tcp_try_send_data(struct nvme_tcp_request *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) struct nvme_tcp_queue *queue = req->queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) int req_data_len = req->data_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) while (true) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) struct page *page = nvme_tcp_req_cur_page(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) size_t offset = nvme_tcp_req_cur_offset(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) size_t len = nvme_tcp_req_cur_length(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) bool last = nvme_tcp_pdu_last_send(req, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) int req_data_sent = req->data_sent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) int ret, flags = MSG_DONTWAIT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) if (last && !queue->data_digest && !nvme_tcp_queue_more(queue))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) flags |= MSG_EOR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) flags |= MSG_MORE | MSG_SENDPAGE_NOTLAST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) if (sendpage_ok(page)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) ret = kernel_sendpage(queue->sock, page, offset, len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) ret = sock_no_sendpage(queue->sock, page, offset, len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) if (ret <= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) if (queue->data_digest)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) nvme_tcp_ddgst_update(queue->snd_hash, page,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) offset, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) * update the request iterator except for the last payload send
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) * in the request where we don't want to modify it as we may
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) * compete with the RX path completing the request.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) if (req_data_sent + ret < req_data_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) nvme_tcp_advance_req(req, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) /* fully successful last send in current PDU */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) if (last && ret == len) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) if (queue->data_digest) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) nvme_tcp_ddgst_final(queue->snd_hash,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) &req->ddgst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) req->state = NVME_TCP_SEND_DDGST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) req->offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) nvme_tcp_done_send_req(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) return -EAGAIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) static int nvme_tcp_try_send_cmd_pdu(struct nvme_tcp_request *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) struct nvme_tcp_queue *queue = req->queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) struct nvme_tcp_cmd_pdu *pdu = req->pdu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) bool inline_data = nvme_tcp_has_inline_data(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) u8 hdgst = nvme_tcp_hdgst_len(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) int len = sizeof(*pdu) + hdgst - req->offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) int flags = MSG_DONTWAIT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) if (inline_data || nvme_tcp_queue_more(queue))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) flags |= MSG_MORE | MSG_SENDPAGE_NOTLAST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) flags |= MSG_EOR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) if (queue->hdr_digest && !req->offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) nvme_tcp_hdgst(queue->snd_hash, pdu, sizeof(*pdu));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) ret = kernel_sendpage(queue->sock, virt_to_page(pdu),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) offset_in_page(pdu) + req->offset, len, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) if (unlikely(ret <= 0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) len -= ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) if (!len) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) if (inline_data) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) req->state = NVME_TCP_SEND_DATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) if (queue->data_digest)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) crypto_ahash_init(queue->snd_hash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) nvme_tcp_init_iter(req, WRITE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) nvme_tcp_done_send_req(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) req->offset += ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) return -EAGAIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) static int nvme_tcp_try_send_data_pdu(struct nvme_tcp_request *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) struct nvme_tcp_queue *queue = req->queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055) struct nvme_tcp_data_pdu *pdu = req->pdu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) u8 hdgst = nvme_tcp_hdgst_len(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) int len = sizeof(*pdu) - req->offset + hdgst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) if (queue->hdr_digest && !req->offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) nvme_tcp_hdgst(queue->snd_hash, pdu, sizeof(*pdu));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) ret = kernel_sendpage(queue->sock, virt_to_page(pdu),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) offset_in_page(pdu) + req->offset, len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) MSG_DONTWAIT | MSG_MORE | MSG_SENDPAGE_NOTLAST);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) if (unlikely(ret <= 0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) len -= ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) if (!len) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) req->state = NVME_TCP_SEND_DATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) if (queue->data_digest)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) crypto_ahash_init(queue->snd_hash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) if (!req->data_sent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) nvme_tcp_init_iter(req, WRITE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) req->offset += ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) return -EAGAIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) static int nvme_tcp_try_send_ddgst(struct nvme_tcp_request *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) struct nvme_tcp_queue *queue = req->queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) size_t offset = req->offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) struct msghdr msg = { .msg_flags = MSG_DONTWAIT };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) struct kvec iov = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) .iov_base = (u8 *)&req->ddgst + req->offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) .iov_len = NVME_TCP_DIGEST_LENGTH - req->offset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) if (nvme_tcp_queue_more(queue))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) msg.msg_flags |= MSG_MORE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) msg.msg_flags |= MSG_EOR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) ret = kernel_sendmsg(queue->sock, &msg, &iov, 1, iov.iov_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) if (unlikely(ret <= 0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103) if (offset + ret == NVME_TCP_DIGEST_LENGTH) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) nvme_tcp_done_send_req(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) req->offset += ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) return -EAGAIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) static int nvme_tcp_try_send(struct nvme_tcp_queue *queue)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) struct nvme_tcp_request *req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) int ret = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) if (!queue->request) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) queue->request = nvme_tcp_fetch_request(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) if (!queue->request)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) req = queue->request;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) if (req->state == NVME_TCP_SEND_CMD_PDU) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) ret = nvme_tcp_try_send_cmd_pdu(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) if (ret <= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) if (!nvme_tcp_has_inline_data(req))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132) if (req->state == NVME_TCP_SEND_H2C_PDU) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) ret = nvme_tcp_try_send_data_pdu(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) if (ret <= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) if (req->state == NVME_TCP_SEND_DATA) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) ret = nvme_tcp_try_send_data(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) if (ret <= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144) if (req->state == NVME_TCP_SEND_DDGST)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) ret = nvme_tcp_try_send_ddgst(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) done:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) if (ret == -EAGAIN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149) } else if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) dev_err(queue->ctrl->ctrl.device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) "failed to send request %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) if (ret != -EPIPE && ret != -ECONNRESET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153) nvme_tcp_fail_request(queue->request);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154) nvme_tcp_done_send_req(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) static int nvme_tcp_try_recv(struct nvme_tcp_queue *queue)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) struct socket *sock = queue->sock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) struct sock *sk = sock->sk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) read_descriptor_t rd_desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164) int consumed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) rd_desc.arg.data = queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) rd_desc.count = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) lock_sock(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169) queue->nr_cqe = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) consumed = sock->ops->read_sock(sk, &rd_desc, nvme_tcp_recv_skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) release_sock(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) return consumed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175) static void nvme_tcp_io_work(struct work_struct *w)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177) struct nvme_tcp_queue *queue =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) container_of(w, struct nvme_tcp_queue, io_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179) unsigned long deadline = jiffies + msecs_to_jiffies(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182) bool pending = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) int result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185) if (mutex_trylock(&queue->send_mutex)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186) result = nvme_tcp_try_send(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187) mutex_unlock(&queue->send_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) if (result > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189) pending = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190) else if (unlikely(result < 0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) result = nvme_tcp_try_recv(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195) if (result > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196) pending = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197) else if (unlikely(result < 0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) if (!pending)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203) } while (!time_after(jiffies, deadline)); /* quota is exhausted */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205) queue_work_on(queue->io_cpu, nvme_tcp_wq, &queue->io_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) static void nvme_tcp_free_crypto(struct nvme_tcp_queue *queue)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210) struct crypto_ahash *tfm = crypto_ahash_reqtfm(queue->rcv_hash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212) ahash_request_free(queue->rcv_hash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213) ahash_request_free(queue->snd_hash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) crypto_free_ahash(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) static int nvme_tcp_alloc_crypto(struct nvme_tcp_queue *queue)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219) struct crypto_ahash *tfm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) tfm = crypto_alloc_ahash("crc32c", 0, CRYPTO_ALG_ASYNC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222) if (IS_ERR(tfm))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223) return PTR_ERR(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225) queue->snd_hash = ahash_request_alloc(tfm, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226) if (!queue->snd_hash)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227) goto free_tfm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) ahash_request_set_callback(queue->snd_hash, 0, NULL, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230) queue->rcv_hash = ahash_request_alloc(tfm, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231) if (!queue->rcv_hash)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) goto free_snd_hash;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) ahash_request_set_callback(queue->rcv_hash, 0, NULL, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236) free_snd_hash:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237) ahash_request_free(queue->snd_hash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238) free_tfm:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239) crypto_free_ahash(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) static void nvme_tcp_free_async_req(struct nvme_tcp_ctrl *ctrl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245) struct nvme_tcp_request *async = &ctrl->async_req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247) page_frag_free(async->pdu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) static int nvme_tcp_alloc_async_req(struct nvme_tcp_ctrl *ctrl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252) struct nvme_tcp_queue *queue = &ctrl->queues[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) struct nvme_tcp_request *async = &ctrl->async_req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254) u8 hdgst = nvme_tcp_hdgst_len(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) async->pdu = page_frag_alloc(&queue->pf_cache,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257) sizeof(struct nvme_tcp_cmd_pdu) + hdgst,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258) GFP_KERNEL | __GFP_ZERO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259) if (!async->pdu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262) async->queue = &ctrl->queues[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266) static void nvme_tcp_free_queue(struct nvme_ctrl *nctrl, int qid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268) struct nvme_tcp_ctrl *ctrl = to_tcp_ctrl(nctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269) struct nvme_tcp_queue *queue = &ctrl->queues[qid];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271) if (!test_and_clear_bit(NVME_TCP_Q_ALLOCATED, &queue->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274) if (queue->hdr_digest || queue->data_digest)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275) nvme_tcp_free_crypto(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277) sock_release(queue->sock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278) kfree(queue->pdu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) mutex_destroy(&queue->queue_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) static int nvme_tcp_init_connection(struct nvme_tcp_queue *queue)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284) struct nvme_tcp_icreq_pdu *icreq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285) struct nvme_tcp_icresp_pdu *icresp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286) struct msghdr msg = {};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287) struct kvec iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288) bool ctrl_hdgst, ctrl_ddgst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) icreq = kzalloc(sizeof(*icreq), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292) if (!icreq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295) icresp = kzalloc(sizeof(*icresp), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296) if (!icresp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298) goto free_icreq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301) icreq->hdr.type = nvme_tcp_icreq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302) icreq->hdr.hlen = sizeof(*icreq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303) icreq->hdr.pdo = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304) icreq->hdr.plen = cpu_to_le32(icreq->hdr.hlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305) icreq->pfv = cpu_to_le16(NVME_TCP_PFV_1_0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306) icreq->maxr2t = 0; /* single inflight r2t supported */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307) icreq->hpda = 0; /* no alignment constraint */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308) if (queue->hdr_digest)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309) icreq->digest |= NVME_TCP_HDR_DIGEST_ENABLE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310) if (queue->data_digest)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311) icreq->digest |= NVME_TCP_DATA_DIGEST_ENABLE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313) iov.iov_base = icreq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314) iov.iov_len = sizeof(*icreq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315) ret = kernel_sendmsg(queue->sock, &msg, &iov, 1, iov.iov_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317) goto free_icresp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319) memset(&msg, 0, sizeof(msg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320) iov.iov_base = icresp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321) iov.iov_len = sizeof(*icresp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322) ret = kernel_recvmsg(queue->sock, &msg, &iov, 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323) iov.iov_len, msg.msg_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325) goto free_icresp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328) if (icresp->hdr.type != nvme_tcp_icresp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) pr_err("queue %d: bad type returned %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330) nvme_tcp_queue_id(queue), icresp->hdr.type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331) goto free_icresp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334) if (le32_to_cpu(icresp->hdr.plen) != sizeof(*icresp)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) pr_err("queue %d: bad pdu length returned %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336) nvme_tcp_queue_id(queue), icresp->hdr.plen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337) goto free_icresp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340) if (icresp->pfv != NVME_TCP_PFV_1_0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341) pr_err("queue %d: bad pfv returned %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) nvme_tcp_queue_id(queue), icresp->pfv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343) goto free_icresp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346) ctrl_ddgst = !!(icresp->digest & NVME_TCP_DATA_DIGEST_ENABLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347) if ((queue->data_digest && !ctrl_ddgst) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348) (!queue->data_digest && ctrl_ddgst)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349) pr_err("queue %d: data digest mismatch host: %s ctrl: %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350) nvme_tcp_queue_id(queue),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351) queue->data_digest ? "enabled" : "disabled",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352) ctrl_ddgst ? "enabled" : "disabled");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353) goto free_icresp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356) ctrl_hdgst = !!(icresp->digest & NVME_TCP_HDR_DIGEST_ENABLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357) if ((queue->hdr_digest && !ctrl_hdgst) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358) (!queue->hdr_digest && ctrl_hdgst)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359) pr_err("queue %d: header digest mismatch host: %s ctrl: %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360) nvme_tcp_queue_id(queue),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361) queue->hdr_digest ? "enabled" : "disabled",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362) ctrl_hdgst ? "enabled" : "disabled");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363) goto free_icresp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366) if (icresp->cpda != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367) pr_err("queue %d: unsupported cpda returned %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368) nvme_tcp_queue_id(queue), icresp->cpda);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369) goto free_icresp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373) free_icresp:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374) kfree(icresp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375) free_icreq:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376) kfree(icreq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380) static bool nvme_tcp_admin_queue(struct nvme_tcp_queue *queue)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382) return nvme_tcp_queue_id(queue) == 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385) static bool nvme_tcp_default_queue(struct nvme_tcp_queue *queue)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387) struct nvme_tcp_ctrl *ctrl = queue->ctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388) int qid = nvme_tcp_queue_id(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390) return !nvme_tcp_admin_queue(queue) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391) qid < 1 + ctrl->io_queues[HCTX_TYPE_DEFAULT];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1394) static bool nvme_tcp_read_queue(struct nvme_tcp_queue *queue)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1395) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1396) struct nvme_tcp_ctrl *ctrl = queue->ctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1397) int qid = nvme_tcp_queue_id(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1398)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1399) return !nvme_tcp_admin_queue(queue) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1400) !nvme_tcp_default_queue(queue) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1401) qid < 1 + ctrl->io_queues[HCTX_TYPE_DEFAULT] +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1402) ctrl->io_queues[HCTX_TYPE_READ];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1403) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1404)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1405) static bool nvme_tcp_poll_queue(struct nvme_tcp_queue *queue)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1406) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1407) struct nvme_tcp_ctrl *ctrl = queue->ctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1408) int qid = nvme_tcp_queue_id(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1410) return !nvme_tcp_admin_queue(queue) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1411) !nvme_tcp_default_queue(queue) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1412) !nvme_tcp_read_queue(queue) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1413) qid < 1 + ctrl->io_queues[HCTX_TYPE_DEFAULT] +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1414) ctrl->io_queues[HCTX_TYPE_READ] +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1415) ctrl->io_queues[HCTX_TYPE_POLL];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1416) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1417)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1418) static void nvme_tcp_set_queue_io_cpu(struct nvme_tcp_queue *queue)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1419) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1420) struct nvme_tcp_ctrl *ctrl = queue->ctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1421) int qid = nvme_tcp_queue_id(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1422) int n = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1423)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1424) if (nvme_tcp_default_queue(queue))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1425) n = qid - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1426) else if (nvme_tcp_read_queue(queue))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1427) n = qid - ctrl->io_queues[HCTX_TYPE_DEFAULT] - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1428) else if (nvme_tcp_poll_queue(queue))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1429) n = qid - ctrl->io_queues[HCTX_TYPE_DEFAULT] -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1430) ctrl->io_queues[HCTX_TYPE_READ] - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1431) queue->io_cpu = cpumask_next_wrap(n - 1, cpu_online_mask, -1, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1432) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1433)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1434) static int nvme_tcp_alloc_queue(struct nvme_ctrl *nctrl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1435) int qid, size_t queue_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1436) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1437) struct nvme_tcp_ctrl *ctrl = to_tcp_ctrl(nctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1438) struct nvme_tcp_queue *queue = &ctrl->queues[qid];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1439) int ret, rcv_pdu_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1440)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1441) mutex_init(&queue->queue_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1442) queue->ctrl = ctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1443) init_llist_head(&queue->req_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1444) INIT_LIST_HEAD(&queue->send_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1445) mutex_init(&queue->send_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1446) INIT_WORK(&queue->io_work, nvme_tcp_io_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1447) queue->queue_size = queue_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1448)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1449) if (qid > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1450) queue->cmnd_capsule_len = nctrl->ioccsz * 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1451) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1452) queue->cmnd_capsule_len = sizeof(struct nvme_command) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1453) NVME_TCP_ADMIN_CCSZ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1455) ret = sock_create(ctrl->addr.ss_family, SOCK_STREAM,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1456) IPPROTO_TCP, &queue->sock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1457) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1458) dev_err(nctrl->device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1459) "failed to create socket: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1460) goto err_destroy_mutex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1461) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1462)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1463) nvme_tcp_reclassify_socket(queue->sock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1464)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1465) /* Single syn retry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1466) tcp_sock_set_syncnt(queue->sock->sk, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1467)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1468) /* Set TCP no delay */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1469) tcp_sock_set_nodelay(queue->sock->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1471) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1472) * Cleanup whatever is sitting in the TCP transmit queue on socket
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1473) * close. This is done to prevent stale data from being sent should
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1474) * the network connection be restored before TCP times out.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1475) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1476) sock_no_linger(queue->sock->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1477)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1478) if (so_priority > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1479) sock_set_priority(queue->sock->sk, so_priority);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1480)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1481) /* Set socket type of service */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1482) if (nctrl->opts->tos >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1483) ip_sock_set_tos(queue->sock->sk, nctrl->opts->tos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1484)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1485) /* Set 10 seconds timeout for icresp recvmsg */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1486) queue->sock->sk->sk_rcvtimeo = 10 * HZ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1487)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1488) queue->sock->sk->sk_allocation = GFP_ATOMIC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1489) nvme_tcp_set_queue_io_cpu(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1490) queue->request = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1491) queue->data_remaining = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1492) queue->ddgst_remaining = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1493) queue->pdu_remaining = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1494) queue->pdu_offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1495) sk_set_memalloc(queue->sock->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1496)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1497) if (nctrl->opts->mask & NVMF_OPT_HOST_TRADDR) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1498) ret = kernel_bind(queue->sock, (struct sockaddr *)&ctrl->src_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1499) sizeof(ctrl->src_addr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1500) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1501) dev_err(nctrl->device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1502) "failed to bind queue %d socket %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1503) qid, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1504) goto err_sock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1505) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1506) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1507)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1508) queue->hdr_digest = nctrl->opts->hdr_digest;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1509) queue->data_digest = nctrl->opts->data_digest;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1510) if (queue->hdr_digest || queue->data_digest) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1511) ret = nvme_tcp_alloc_crypto(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1512) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1513) dev_err(nctrl->device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1514) "failed to allocate queue %d crypto\n", qid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1515) goto err_sock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1516) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1517) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1518)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1519) rcv_pdu_size = sizeof(struct nvme_tcp_rsp_pdu) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1520) nvme_tcp_hdgst_len(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1521) queue->pdu = kmalloc(rcv_pdu_size, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1522) if (!queue->pdu) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1523) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1524) goto err_crypto;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1525) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1526)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1527) dev_dbg(nctrl->device, "connecting queue %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1528) nvme_tcp_queue_id(queue));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1529)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1530) ret = kernel_connect(queue->sock, (struct sockaddr *)&ctrl->addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1531) sizeof(ctrl->addr), 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1532) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1533) dev_err(nctrl->device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1534) "failed to connect socket: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1535) goto err_rcv_pdu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1536) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1537)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1538) ret = nvme_tcp_init_connection(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1539) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1540) goto err_init_connect;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1541)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1542) queue->rd_enabled = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1543) set_bit(NVME_TCP_Q_ALLOCATED, &queue->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1544) nvme_tcp_init_recv_ctx(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1545)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1546) write_lock_bh(&queue->sock->sk->sk_callback_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1547) queue->sock->sk->sk_user_data = queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1548) queue->state_change = queue->sock->sk->sk_state_change;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1549) queue->data_ready = queue->sock->sk->sk_data_ready;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1550) queue->write_space = queue->sock->sk->sk_write_space;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1551) queue->sock->sk->sk_data_ready = nvme_tcp_data_ready;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1552) queue->sock->sk->sk_state_change = nvme_tcp_state_change;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1553) queue->sock->sk->sk_write_space = nvme_tcp_write_space;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1554) #ifdef CONFIG_NET_RX_BUSY_POLL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1555) queue->sock->sk->sk_ll_usec = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1556) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1557) write_unlock_bh(&queue->sock->sk->sk_callback_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1558)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1559) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1560)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1561) err_init_connect:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1562) kernel_sock_shutdown(queue->sock, SHUT_RDWR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1563) err_rcv_pdu:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1564) kfree(queue->pdu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1565) err_crypto:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1566) if (queue->hdr_digest || queue->data_digest)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1567) nvme_tcp_free_crypto(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1568) err_sock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1569) sock_release(queue->sock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1570) queue->sock = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1571) err_destroy_mutex:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1572) mutex_destroy(&queue->queue_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1573) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1574) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1575)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1576) static void nvme_tcp_restore_sock_calls(struct nvme_tcp_queue *queue)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1577) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1578) struct socket *sock = queue->sock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1579)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1580) write_lock_bh(&sock->sk->sk_callback_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1581) sock->sk->sk_user_data = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1582) sock->sk->sk_data_ready = queue->data_ready;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1583) sock->sk->sk_state_change = queue->state_change;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1584) sock->sk->sk_write_space = queue->write_space;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1585) write_unlock_bh(&sock->sk->sk_callback_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1586) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1587)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1588) static void __nvme_tcp_stop_queue(struct nvme_tcp_queue *queue)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1589) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1590) kernel_sock_shutdown(queue->sock, SHUT_RDWR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1591) nvme_tcp_restore_sock_calls(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1592) cancel_work_sync(&queue->io_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1593) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1594)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1595) static void nvme_tcp_stop_queue(struct nvme_ctrl *nctrl, int qid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1596) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1597) struct nvme_tcp_ctrl *ctrl = to_tcp_ctrl(nctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1598) struct nvme_tcp_queue *queue = &ctrl->queues[qid];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1599)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1600) mutex_lock(&queue->queue_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1601) if (test_and_clear_bit(NVME_TCP_Q_LIVE, &queue->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1602) __nvme_tcp_stop_queue(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1603) mutex_unlock(&queue->queue_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1604) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1605)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1606) static int nvme_tcp_start_queue(struct nvme_ctrl *nctrl, int idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1607) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1608) struct nvme_tcp_ctrl *ctrl = to_tcp_ctrl(nctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1609) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1610)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1611) if (idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1612) ret = nvmf_connect_io_queue(nctrl, idx, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1613) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1614) ret = nvmf_connect_admin_queue(nctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1615)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1616) if (!ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1617) set_bit(NVME_TCP_Q_LIVE, &ctrl->queues[idx].flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1618) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1619) if (test_bit(NVME_TCP_Q_ALLOCATED, &ctrl->queues[idx].flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1620) __nvme_tcp_stop_queue(&ctrl->queues[idx]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1621) dev_err(nctrl->device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1622) "failed to connect queue: %d ret=%d\n", idx, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1623) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1624) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1625) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1626)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1627) static struct blk_mq_tag_set *nvme_tcp_alloc_tagset(struct nvme_ctrl *nctrl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1628) bool admin)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1629) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1630) struct nvme_tcp_ctrl *ctrl = to_tcp_ctrl(nctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1631) struct blk_mq_tag_set *set;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1632) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1633)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1634) if (admin) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1635) set = &ctrl->admin_tag_set;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1636) memset(set, 0, sizeof(*set));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1637) set->ops = &nvme_tcp_admin_mq_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1638) set->queue_depth = NVME_AQ_MQ_TAG_DEPTH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1639) set->reserved_tags = 2; /* connect + keep-alive */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1640) set->numa_node = nctrl->numa_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1641) set->flags = BLK_MQ_F_BLOCKING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1642) set->cmd_size = sizeof(struct nvme_tcp_request);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1643) set->driver_data = ctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1644) set->nr_hw_queues = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1645) set->timeout = ADMIN_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1646) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1647) set = &ctrl->tag_set;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1648) memset(set, 0, sizeof(*set));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1649) set->ops = &nvme_tcp_mq_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1650) set->queue_depth = nctrl->sqsize + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1651) set->reserved_tags = 1; /* fabric connect */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1652) set->numa_node = nctrl->numa_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1653) set->flags = BLK_MQ_F_SHOULD_MERGE | BLK_MQ_F_BLOCKING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1654) set->cmd_size = sizeof(struct nvme_tcp_request);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1655) set->driver_data = ctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1656) set->nr_hw_queues = nctrl->queue_count - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1657) set->timeout = NVME_IO_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1658) set->nr_maps = nctrl->opts->nr_poll_queues ? HCTX_MAX_TYPES : 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1659) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1660)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1661) ret = blk_mq_alloc_tag_set(set);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1662) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1663) return ERR_PTR(ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1664)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1665) return set;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1666) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1667)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1668) static void nvme_tcp_free_admin_queue(struct nvme_ctrl *ctrl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1669) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1670) if (to_tcp_ctrl(ctrl)->async_req.pdu) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1671) cancel_work_sync(&ctrl->async_event_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1672) nvme_tcp_free_async_req(to_tcp_ctrl(ctrl));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1673) to_tcp_ctrl(ctrl)->async_req.pdu = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1674) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1675)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1676) nvme_tcp_free_queue(ctrl, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1677) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1678)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1679) static void nvme_tcp_free_io_queues(struct nvme_ctrl *ctrl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1680) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1681) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1682)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1683) for (i = 1; i < ctrl->queue_count; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1684) nvme_tcp_free_queue(ctrl, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1685) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1686)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1687) static void nvme_tcp_stop_io_queues(struct nvme_ctrl *ctrl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1688) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1689) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1690)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1691) for (i = 1; i < ctrl->queue_count; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1692) nvme_tcp_stop_queue(ctrl, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1693) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1694)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1695) static int nvme_tcp_start_io_queues(struct nvme_ctrl *ctrl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1696) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1697) int i, ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1698)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1699) for (i = 1; i < ctrl->queue_count; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1700) ret = nvme_tcp_start_queue(ctrl, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1701) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1702) goto out_stop_queues;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1703) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1704)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1705) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1706)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1707) out_stop_queues:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1708) for (i--; i >= 1; i--)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1709) nvme_tcp_stop_queue(ctrl, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1710) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1711) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1712)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1713) static int nvme_tcp_alloc_admin_queue(struct nvme_ctrl *ctrl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1714) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1715) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1716)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1717) ret = nvme_tcp_alloc_queue(ctrl, 0, NVME_AQ_DEPTH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1718) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1719) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1720)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1721) ret = nvme_tcp_alloc_async_req(to_tcp_ctrl(ctrl));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1722) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1723) goto out_free_queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1724)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1725) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1726)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1727) out_free_queue:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1728) nvme_tcp_free_queue(ctrl, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1729) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1730) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1731)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1732) static int __nvme_tcp_alloc_io_queues(struct nvme_ctrl *ctrl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1733) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1734) int i, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1735)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1736) for (i = 1; i < ctrl->queue_count; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1737) ret = nvme_tcp_alloc_queue(ctrl, i,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1738) ctrl->sqsize + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1739) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1740) goto out_free_queues;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1741) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1742)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1743) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1744)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1745) out_free_queues:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1746) for (i--; i >= 1; i--)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1747) nvme_tcp_free_queue(ctrl, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1748)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1749) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1750) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1751)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1752) static unsigned int nvme_tcp_nr_io_queues(struct nvme_ctrl *ctrl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1753) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1754) unsigned int nr_io_queues;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1755)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1756) nr_io_queues = min(ctrl->opts->nr_io_queues, num_online_cpus());
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1757) nr_io_queues += min(ctrl->opts->nr_write_queues, num_online_cpus());
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1758) nr_io_queues += min(ctrl->opts->nr_poll_queues, num_online_cpus());
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1759)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1760) return nr_io_queues;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1761) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1762)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1763) static void nvme_tcp_set_io_queues(struct nvme_ctrl *nctrl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1764) unsigned int nr_io_queues)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1765) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1766) struct nvme_tcp_ctrl *ctrl = to_tcp_ctrl(nctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1767) struct nvmf_ctrl_options *opts = nctrl->opts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1768)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1769) if (opts->nr_write_queues && opts->nr_io_queues < nr_io_queues) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1770) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1771) * separate read/write queues
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1772) * hand out dedicated default queues only after we have
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1773) * sufficient read queues.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1774) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1775) ctrl->io_queues[HCTX_TYPE_READ] = opts->nr_io_queues;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1776) nr_io_queues -= ctrl->io_queues[HCTX_TYPE_READ];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1777) ctrl->io_queues[HCTX_TYPE_DEFAULT] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1778) min(opts->nr_write_queues, nr_io_queues);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1779) nr_io_queues -= ctrl->io_queues[HCTX_TYPE_DEFAULT];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1780) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1781) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1782) * shared read/write queues
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1783) * either no write queues were requested, or we don't have
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1784) * sufficient queue count to have dedicated default queues.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1785) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1786) ctrl->io_queues[HCTX_TYPE_DEFAULT] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1787) min(opts->nr_io_queues, nr_io_queues);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1788) nr_io_queues -= ctrl->io_queues[HCTX_TYPE_DEFAULT];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1789) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1790)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1791) if (opts->nr_poll_queues && nr_io_queues) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1792) /* map dedicated poll queues only if we have queues left */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1793) ctrl->io_queues[HCTX_TYPE_POLL] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1794) min(opts->nr_poll_queues, nr_io_queues);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1795) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1796) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1797)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1798) static int nvme_tcp_alloc_io_queues(struct nvme_ctrl *ctrl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1799) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1800) unsigned int nr_io_queues;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1801) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1802)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1803) nr_io_queues = nvme_tcp_nr_io_queues(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1804) ret = nvme_set_queue_count(ctrl, &nr_io_queues);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1805) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1806) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1807)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1808) if (nr_io_queues == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1809) dev_err(ctrl->device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1810) "unable to set any I/O queues\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1811) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1812) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1813)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1814) ctrl->queue_count = nr_io_queues + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1815) dev_info(ctrl->device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1816) "creating %d I/O queues.\n", nr_io_queues);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1817)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1818) nvme_tcp_set_io_queues(ctrl, nr_io_queues);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1819)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1820) return __nvme_tcp_alloc_io_queues(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1821) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1822)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1823) static void nvme_tcp_destroy_io_queues(struct nvme_ctrl *ctrl, bool remove)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1824) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1825) nvme_tcp_stop_io_queues(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1826) if (remove) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1827) blk_cleanup_queue(ctrl->connect_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1828) blk_mq_free_tag_set(ctrl->tagset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1829) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1830) nvme_tcp_free_io_queues(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1831) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1832)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1833) static int nvme_tcp_configure_io_queues(struct nvme_ctrl *ctrl, bool new)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1834) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1835) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1836)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1837) ret = nvme_tcp_alloc_io_queues(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1838) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1839) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1840)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1841) if (new) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1842) ctrl->tagset = nvme_tcp_alloc_tagset(ctrl, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1843) if (IS_ERR(ctrl->tagset)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1844) ret = PTR_ERR(ctrl->tagset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1845) goto out_free_io_queues;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1846) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1847)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1848) ctrl->connect_q = blk_mq_init_queue(ctrl->tagset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1849) if (IS_ERR(ctrl->connect_q)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1850) ret = PTR_ERR(ctrl->connect_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1851) goto out_free_tag_set;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1852) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1853) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1854)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1855) ret = nvme_tcp_start_io_queues(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1856) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1857) goto out_cleanup_connect_q;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1858)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1859) if (!new) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1860) nvme_start_queues(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1861) if (!nvme_wait_freeze_timeout(ctrl, NVME_IO_TIMEOUT)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1862) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1863) * If we timed out waiting for freeze we are likely to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1864) * be stuck. Fail the controller initialization just
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1865) * to be safe.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1866) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1867) ret = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1868) goto out_wait_freeze_timed_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1869) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1870) blk_mq_update_nr_hw_queues(ctrl->tagset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1871) ctrl->queue_count - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1872) nvme_unfreeze(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1873) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1874)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1875) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1876)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1877) out_wait_freeze_timed_out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1878) nvme_stop_queues(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1879) nvme_sync_io_queues(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1880) nvme_tcp_stop_io_queues(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1881) out_cleanup_connect_q:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1882) nvme_cancel_tagset(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1883) if (new)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1884) blk_cleanup_queue(ctrl->connect_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1885) out_free_tag_set:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1886) if (new)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1887) blk_mq_free_tag_set(ctrl->tagset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1888) out_free_io_queues:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1889) nvme_tcp_free_io_queues(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1890) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1891) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1892)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1893) static void nvme_tcp_destroy_admin_queue(struct nvme_ctrl *ctrl, bool remove)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1894) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1895) nvme_tcp_stop_queue(ctrl, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1896) if (remove) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1897) blk_cleanup_queue(ctrl->admin_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1898) blk_cleanup_queue(ctrl->fabrics_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1899) blk_mq_free_tag_set(ctrl->admin_tagset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1900) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1901) nvme_tcp_free_admin_queue(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1902) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1903)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1904) static int nvme_tcp_configure_admin_queue(struct nvme_ctrl *ctrl, bool new)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1905) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1906) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1907)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1908) error = nvme_tcp_alloc_admin_queue(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1909) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1910) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1911)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1912) if (new) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1913) ctrl->admin_tagset = nvme_tcp_alloc_tagset(ctrl, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1914) if (IS_ERR(ctrl->admin_tagset)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1915) error = PTR_ERR(ctrl->admin_tagset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1916) goto out_free_queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1917) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1918)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1919) ctrl->fabrics_q = blk_mq_init_queue(ctrl->admin_tagset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1920) if (IS_ERR(ctrl->fabrics_q)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1921) error = PTR_ERR(ctrl->fabrics_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1922) goto out_free_tagset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1923) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1924)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1925) ctrl->admin_q = blk_mq_init_queue(ctrl->admin_tagset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1926) if (IS_ERR(ctrl->admin_q)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1927) error = PTR_ERR(ctrl->admin_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1928) goto out_cleanup_fabrics_q;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1929) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1930) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1931)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1932) error = nvme_tcp_start_queue(ctrl, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1933) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1934) goto out_cleanup_queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1935)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1936) error = nvme_enable_ctrl(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1937) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1938) goto out_stop_queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1939)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1940) blk_mq_unquiesce_queue(ctrl->admin_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1941)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1942) error = nvme_init_identify(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1943) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1944) goto out_quiesce_queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1945)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1946) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1947)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1948) out_quiesce_queue:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1949) blk_mq_quiesce_queue(ctrl->admin_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1950) blk_sync_queue(ctrl->admin_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1951) out_stop_queue:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1952) nvme_tcp_stop_queue(ctrl, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1953) nvme_cancel_admin_tagset(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1954) out_cleanup_queue:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1955) if (new)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1956) blk_cleanup_queue(ctrl->admin_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1957) out_cleanup_fabrics_q:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1958) if (new)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1959) blk_cleanup_queue(ctrl->fabrics_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1960) out_free_tagset:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1961) if (new)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1962) blk_mq_free_tag_set(ctrl->admin_tagset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1963) out_free_queue:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1964) nvme_tcp_free_admin_queue(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1965) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1966) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1967)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1968) static void nvme_tcp_teardown_admin_queue(struct nvme_ctrl *ctrl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1969) bool remove)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1970) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1971) blk_mq_quiesce_queue(ctrl->admin_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1972) blk_sync_queue(ctrl->admin_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1973) nvme_tcp_stop_queue(ctrl, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1974) if (ctrl->admin_tagset) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1975) blk_mq_tagset_busy_iter(ctrl->admin_tagset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1976) nvme_cancel_request, ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1977) blk_mq_tagset_wait_completed_request(ctrl->admin_tagset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1978) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1979) if (remove)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1980) blk_mq_unquiesce_queue(ctrl->admin_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1981) nvme_tcp_destroy_admin_queue(ctrl, remove);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1982) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1983)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1984) static void nvme_tcp_teardown_io_queues(struct nvme_ctrl *ctrl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1985) bool remove)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1986) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1987) if (ctrl->queue_count <= 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1988) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1989) blk_mq_quiesce_queue(ctrl->admin_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1990) nvme_start_freeze(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1991) nvme_stop_queues(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1992) nvme_sync_io_queues(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1993) nvme_tcp_stop_io_queues(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1994) if (ctrl->tagset) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1995) blk_mq_tagset_busy_iter(ctrl->tagset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1996) nvme_cancel_request, ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1997) blk_mq_tagset_wait_completed_request(ctrl->tagset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1998) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1999) if (remove)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2000) nvme_start_queues(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2001) nvme_tcp_destroy_io_queues(ctrl, remove);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2002) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2003)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2004) static void nvme_tcp_reconnect_or_remove(struct nvme_ctrl *ctrl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2005) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2006) /* If we are resetting/deleting then do nothing */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2007) if (ctrl->state != NVME_CTRL_CONNECTING) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2008) WARN_ON_ONCE(ctrl->state == NVME_CTRL_NEW ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2009) ctrl->state == NVME_CTRL_LIVE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2010) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2011) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2012)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2013) if (nvmf_should_reconnect(ctrl)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2014) dev_info(ctrl->device, "Reconnecting in %d seconds...\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2015) ctrl->opts->reconnect_delay);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2016) queue_delayed_work(nvme_wq, &to_tcp_ctrl(ctrl)->connect_work,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2017) ctrl->opts->reconnect_delay * HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2018) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2019) dev_info(ctrl->device, "Removing controller...\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2020) nvme_delete_ctrl(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2021) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2022) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2023)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2024) static int nvme_tcp_setup_ctrl(struct nvme_ctrl *ctrl, bool new)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2025) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2026) struct nvmf_ctrl_options *opts = ctrl->opts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2027) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2028)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2029) ret = nvme_tcp_configure_admin_queue(ctrl, new);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2030) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2031) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2032)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2033) if (ctrl->icdoff) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2034) dev_err(ctrl->device, "icdoff is not supported!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2035) goto destroy_admin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2036) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2037)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2038) if (opts->queue_size > ctrl->sqsize + 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2039) dev_warn(ctrl->device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2040) "queue_size %zu > ctrl sqsize %u, clamping down\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2041) opts->queue_size, ctrl->sqsize + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2042)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2043) if (ctrl->sqsize + 1 > ctrl->maxcmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2044) dev_warn(ctrl->device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2045) "sqsize %u > ctrl maxcmd %u, clamping down\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2046) ctrl->sqsize + 1, ctrl->maxcmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2047) ctrl->sqsize = ctrl->maxcmd - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2048) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2049)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2050) if (ctrl->queue_count > 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2051) ret = nvme_tcp_configure_io_queues(ctrl, new);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2052) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2053) goto destroy_admin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2054) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2055)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2056) if (!nvme_change_ctrl_state(ctrl, NVME_CTRL_LIVE)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2057) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2058) * state change failure is ok if we started ctrl delete,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2059) * unless we're during creation of a new controller to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2060) * avoid races with teardown flow.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2061) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2062) WARN_ON_ONCE(ctrl->state != NVME_CTRL_DELETING &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2063) ctrl->state != NVME_CTRL_DELETING_NOIO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2064) WARN_ON_ONCE(new);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2065) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2066) goto destroy_io;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2067) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2068)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2069) nvme_start_ctrl(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2070) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2071)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2072) destroy_io:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2073) if (ctrl->queue_count > 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2074) nvme_stop_queues(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2075) nvme_sync_io_queues(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2076) nvme_tcp_stop_io_queues(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2077) nvme_cancel_tagset(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2078) nvme_tcp_destroy_io_queues(ctrl, new);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2079) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2080) destroy_admin:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2081) blk_mq_quiesce_queue(ctrl->admin_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2082) blk_sync_queue(ctrl->admin_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2083) nvme_tcp_stop_queue(ctrl, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2084) nvme_cancel_admin_tagset(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2085) nvme_tcp_destroy_admin_queue(ctrl, new);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2086) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2087) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2088)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2089) static void nvme_tcp_reconnect_ctrl_work(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2090) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2091) struct nvme_tcp_ctrl *tcp_ctrl = container_of(to_delayed_work(work),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2092) struct nvme_tcp_ctrl, connect_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2093) struct nvme_ctrl *ctrl = &tcp_ctrl->ctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2094)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2095) ++ctrl->nr_reconnects;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2096)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2097) if (nvme_tcp_setup_ctrl(ctrl, false))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2098) goto requeue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2099)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2100) dev_info(ctrl->device, "Successfully reconnected (%d attempt)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2101) ctrl->nr_reconnects);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2103) ctrl->nr_reconnects = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2105) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2107) requeue:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2108) dev_info(ctrl->device, "Failed reconnect attempt %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2109) ctrl->nr_reconnects);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2110) nvme_tcp_reconnect_or_remove(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2111) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2113) static void nvme_tcp_error_recovery_work(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2114) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2115) struct nvme_tcp_ctrl *tcp_ctrl = container_of(work,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2116) struct nvme_tcp_ctrl, err_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2117) struct nvme_ctrl *ctrl = &tcp_ctrl->ctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2119) nvme_stop_keep_alive(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2120) flush_work(&ctrl->async_event_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2121) nvme_tcp_teardown_io_queues(ctrl, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2122) /* unquiesce to fail fast pending requests */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2123) nvme_start_queues(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2124) nvme_tcp_teardown_admin_queue(ctrl, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2125) blk_mq_unquiesce_queue(ctrl->admin_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2127) if (!nvme_change_ctrl_state(ctrl, NVME_CTRL_CONNECTING)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2128) /* state change failure is ok if we started ctrl delete */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2129) WARN_ON_ONCE(ctrl->state != NVME_CTRL_DELETING &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2130) ctrl->state != NVME_CTRL_DELETING_NOIO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2131) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2132) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2134) nvme_tcp_reconnect_or_remove(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2135) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2137) static void nvme_tcp_teardown_ctrl(struct nvme_ctrl *ctrl, bool shutdown)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2138) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2139) cancel_work_sync(&to_tcp_ctrl(ctrl)->err_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2140) cancel_delayed_work_sync(&to_tcp_ctrl(ctrl)->connect_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2142) nvme_tcp_teardown_io_queues(ctrl, shutdown);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2143) blk_mq_quiesce_queue(ctrl->admin_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2144) if (shutdown)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2145) nvme_shutdown_ctrl(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2146) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2147) nvme_disable_ctrl(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2148) nvme_tcp_teardown_admin_queue(ctrl, shutdown);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2149) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2151) static void nvme_tcp_delete_ctrl(struct nvme_ctrl *ctrl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2152) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2153) nvme_tcp_teardown_ctrl(ctrl, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2154) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2156) static void nvme_reset_ctrl_work(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2157) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2158) struct nvme_ctrl *ctrl =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2159) container_of(work, struct nvme_ctrl, reset_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2161) nvme_stop_ctrl(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2162) nvme_tcp_teardown_ctrl(ctrl, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2164) if (!nvme_change_ctrl_state(ctrl, NVME_CTRL_CONNECTING)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2165) /* state change failure is ok if we started ctrl delete */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2166) WARN_ON_ONCE(ctrl->state != NVME_CTRL_DELETING &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2167) ctrl->state != NVME_CTRL_DELETING_NOIO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2168) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2169) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2171) if (nvme_tcp_setup_ctrl(ctrl, false))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2172) goto out_fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2174) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2176) out_fail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2177) ++ctrl->nr_reconnects;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2178) nvme_tcp_reconnect_or_remove(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2179) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2181) static void nvme_tcp_free_ctrl(struct nvme_ctrl *nctrl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2182) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2183) struct nvme_tcp_ctrl *ctrl = to_tcp_ctrl(nctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2185) if (list_empty(&ctrl->list))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2186) goto free_ctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2188) mutex_lock(&nvme_tcp_ctrl_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2189) list_del(&ctrl->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2190) mutex_unlock(&nvme_tcp_ctrl_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2192) nvmf_free_options(nctrl->opts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2193) free_ctrl:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2194) kfree(ctrl->queues);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2195) kfree(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2196) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2198) static void nvme_tcp_set_sg_null(struct nvme_command *c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2199) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2200) struct nvme_sgl_desc *sg = &c->common.dptr.sgl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2202) sg->addr = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2203) sg->length = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2204) sg->type = (NVME_TRANSPORT_SGL_DATA_DESC << 4) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2205) NVME_SGL_FMT_TRANSPORT_A;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2206) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2208) static void nvme_tcp_set_sg_inline(struct nvme_tcp_queue *queue,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2209) struct nvme_command *c, u32 data_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2210) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2211) struct nvme_sgl_desc *sg = &c->common.dptr.sgl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2213) sg->addr = cpu_to_le64(queue->ctrl->ctrl.icdoff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2214) sg->length = cpu_to_le32(data_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2215) sg->type = (NVME_SGL_FMT_DATA_DESC << 4) | NVME_SGL_FMT_OFFSET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2216) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2218) static void nvme_tcp_set_sg_host_data(struct nvme_command *c,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2219) u32 data_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2220) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2221) struct nvme_sgl_desc *sg = &c->common.dptr.sgl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2223) sg->addr = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2224) sg->length = cpu_to_le32(data_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2225) sg->type = (NVME_TRANSPORT_SGL_DATA_DESC << 4) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2226) NVME_SGL_FMT_TRANSPORT_A;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2227) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2229) static void nvme_tcp_submit_async_event(struct nvme_ctrl *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2230) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2231) struct nvme_tcp_ctrl *ctrl = to_tcp_ctrl(arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2232) struct nvme_tcp_queue *queue = &ctrl->queues[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2233) struct nvme_tcp_cmd_pdu *pdu = ctrl->async_req.pdu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2234) struct nvme_command *cmd = &pdu->cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2235) u8 hdgst = nvme_tcp_hdgst_len(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2237) memset(pdu, 0, sizeof(*pdu));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2238) pdu->hdr.type = nvme_tcp_cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2239) if (queue->hdr_digest)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2240) pdu->hdr.flags |= NVME_TCP_F_HDGST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2241) pdu->hdr.hlen = sizeof(*pdu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2242) pdu->hdr.plen = cpu_to_le32(pdu->hdr.hlen + hdgst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2244) cmd->common.opcode = nvme_admin_async_event;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2245) cmd->common.command_id = NVME_AQ_BLK_MQ_DEPTH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2246) cmd->common.flags |= NVME_CMD_SGL_METABUF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2247) nvme_tcp_set_sg_null(cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2249) ctrl->async_req.state = NVME_TCP_SEND_CMD_PDU;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2250) ctrl->async_req.offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2251) ctrl->async_req.curr_bio = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2252) ctrl->async_req.data_len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2254) nvme_tcp_queue_request(&ctrl->async_req, true, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2255) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2257) static void nvme_tcp_complete_timed_out(struct request *rq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2258) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2259) struct nvme_tcp_request *req = blk_mq_rq_to_pdu(rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2260) struct nvme_ctrl *ctrl = &req->queue->ctrl->ctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2262) nvme_tcp_stop_queue(ctrl, nvme_tcp_queue_id(req->queue));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2263) if (blk_mq_request_started(rq) && !blk_mq_request_completed(rq)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2264) nvme_req(rq)->status = NVME_SC_HOST_ABORTED_CMD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2265) blk_mq_complete_request(rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2266) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2267) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2269) static enum blk_eh_timer_return
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2270) nvme_tcp_timeout(struct request *rq, bool reserved)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2271) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2272) struct nvme_tcp_request *req = blk_mq_rq_to_pdu(rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2273) struct nvme_ctrl *ctrl = &req->queue->ctrl->ctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2274) struct nvme_tcp_cmd_pdu *pdu = req->pdu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2275)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2276) dev_warn(ctrl->device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2277) "queue %d: timeout request %#x type %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2278) nvme_tcp_queue_id(req->queue), rq->tag, pdu->hdr.type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2279)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2280) if (ctrl->state != NVME_CTRL_LIVE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2281) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2282) * If we are resetting, connecting or deleting we should
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2283) * complete immediately because we may block controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2284) * teardown or setup sequence
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2285) * - ctrl disable/shutdown fabrics requests
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2286) * - connect requests
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2287) * - initialization admin requests
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2288) * - I/O requests that entered after unquiescing and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2289) * the controller stopped responding
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2290) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2291) * All other requests should be cancelled by the error
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2292) * recovery work, so it's fine that we fail it here.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2293) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2294) nvme_tcp_complete_timed_out(rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2295) return BLK_EH_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2296) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2298) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2299) * LIVE state should trigger the normal error recovery which will
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2300) * handle completing this request.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2301) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2302) nvme_tcp_error_recovery(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2303) return BLK_EH_RESET_TIMER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2304) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2306) static blk_status_t nvme_tcp_map_data(struct nvme_tcp_queue *queue,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2307) struct request *rq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2308) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2309) struct nvme_tcp_request *req = blk_mq_rq_to_pdu(rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2310) struct nvme_tcp_cmd_pdu *pdu = req->pdu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2311) struct nvme_command *c = &pdu->cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2313) c->common.flags |= NVME_CMD_SGL_METABUF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2315) if (!blk_rq_nr_phys_segments(rq))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2316) nvme_tcp_set_sg_null(c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2317) else if (rq_data_dir(rq) == WRITE &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2318) req->data_len <= nvme_tcp_inline_data_size(queue))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2319) nvme_tcp_set_sg_inline(queue, c, req->data_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2320) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2321) nvme_tcp_set_sg_host_data(c, req->data_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2323) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2324) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2326) static blk_status_t nvme_tcp_setup_cmd_pdu(struct nvme_ns *ns,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2327) struct request *rq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2328) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2329) struct nvme_tcp_request *req = blk_mq_rq_to_pdu(rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2330) struct nvme_tcp_cmd_pdu *pdu = req->pdu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2331) struct nvme_tcp_queue *queue = req->queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2332) u8 hdgst = nvme_tcp_hdgst_len(queue), ddgst = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2333) blk_status_t ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2335) ret = nvme_setup_cmd(ns, rq, &pdu->cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2336) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2337) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2339) req->state = NVME_TCP_SEND_CMD_PDU;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2340) req->offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2341) req->data_sent = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2342) req->pdu_len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2343) req->pdu_sent = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2344) req->data_len = blk_rq_nr_phys_segments(rq) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2345) blk_rq_payload_bytes(rq) : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2346) req->curr_bio = rq->bio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2347)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2348) if (rq_data_dir(rq) == WRITE &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2349) req->data_len <= nvme_tcp_inline_data_size(queue))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2350) req->pdu_len = req->data_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2351) else if (req->curr_bio)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2352) nvme_tcp_init_iter(req, READ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2353)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2354) pdu->hdr.type = nvme_tcp_cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2355) pdu->hdr.flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2356) if (queue->hdr_digest)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2357) pdu->hdr.flags |= NVME_TCP_F_HDGST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2358) if (queue->data_digest && req->pdu_len) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2359) pdu->hdr.flags |= NVME_TCP_F_DDGST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2360) ddgst = nvme_tcp_ddgst_len(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2361) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2362) pdu->hdr.hlen = sizeof(*pdu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2363) pdu->hdr.pdo = req->pdu_len ? pdu->hdr.hlen + hdgst : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2364) pdu->hdr.plen =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2365) cpu_to_le32(pdu->hdr.hlen + hdgst + req->pdu_len + ddgst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2366)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2367) ret = nvme_tcp_map_data(queue, rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2368) if (unlikely(ret)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2369) nvme_cleanup_cmd(rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2370) dev_err(queue->ctrl->ctrl.device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2371) "Failed to map data (%d)\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2372) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2373) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2374)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2375) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2376) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2377)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2378) static void nvme_tcp_commit_rqs(struct blk_mq_hw_ctx *hctx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2379) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2380) struct nvme_tcp_queue *queue = hctx->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2381)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2382) if (!llist_empty(&queue->req_list))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2383) queue_work_on(queue->io_cpu, nvme_tcp_wq, &queue->io_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2384) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2385)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2386) static blk_status_t nvme_tcp_queue_rq(struct blk_mq_hw_ctx *hctx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2387) const struct blk_mq_queue_data *bd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2388) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2389) struct nvme_ns *ns = hctx->queue->queuedata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2390) struct nvme_tcp_queue *queue = hctx->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2391) struct request *rq = bd->rq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2392) struct nvme_tcp_request *req = blk_mq_rq_to_pdu(rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2393) bool queue_ready = test_bit(NVME_TCP_Q_LIVE, &queue->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2394) blk_status_t ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2395)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2396) if (!nvmf_check_ready(&queue->ctrl->ctrl, rq, queue_ready))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2397) return nvmf_fail_nonready_command(&queue->ctrl->ctrl, rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2398)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2399) ret = nvme_tcp_setup_cmd_pdu(ns, rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2400) if (unlikely(ret))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2401) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2402)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2403) blk_mq_start_request(rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2404)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2405) nvme_tcp_queue_request(req, true, bd->last);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2406)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2407) return BLK_STS_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2408) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2410) static int nvme_tcp_map_queues(struct blk_mq_tag_set *set)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2411) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2412) struct nvme_tcp_ctrl *ctrl = set->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2413) struct nvmf_ctrl_options *opts = ctrl->ctrl.opts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2414)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2415) if (opts->nr_write_queues && ctrl->io_queues[HCTX_TYPE_READ]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2416) /* separate read/write queues */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2417) set->map[HCTX_TYPE_DEFAULT].nr_queues =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2418) ctrl->io_queues[HCTX_TYPE_DEFAULT];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2419) set->map[HCTX_TYPE_DEFAULT].queue_offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2420) set->map[HCTX_TYPE_READ].nr_queues =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2421) ctrl->io_queues[HCTX_TYPE_READ];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2422) set->map[HCTX_TYPE_READ].queue_offset =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2423) ctrl->io_queues[HCTX_TYPE_DEFAULT];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2424) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2425) /* shared read/write queues */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2426) set->map[HCTX_TYPE_DEFAULT].nr_queues =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2427) ctrl->io_queues[HCTX_TYPE_DEFAULT];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2428) set->map[HCTX_TYPE_DEFAULT].queue_offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2429) set->map[HCTX_TYPE_READ].nr_queues =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2430) ctrl->io_queues[HCTX_TYPE_DEFAULT];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2431) set->map[HCTX_TYPE_READ].queue_offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2432) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2433) blk_mq_map_queues(&set->map[HCTX_TYPE_DEFAULT]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2434) blk_mq_map_queues(&set->map[HCTX_TYPE_READ]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2435)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2436) if (opts->nr_poll_queues && ctrl->io_queues[HCTX_TYPE_POLL]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2437) /* map dedicated poll queues only if we have queues left */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2438) set->map[HCTX_TYPE_POLL].nr_queues =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2439) ctrl->io_queues[HCTX_TYPE_POLL];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2440) set->map[HCTX_TYPE_POLL].queue_offset =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2441) ctrl->io_queues[HCTX_TYPE_DEFAULT] +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2442) ctrl->io_queues[HCTX_TYPE_READ];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2443) blk_mq_map_queues(&set->map[HCTX_TYPE_POLL]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2444) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2445)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2446) dev_info(ctrl->ctrl.device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2447) "mapped %d/%d/%d default/read/poll queues.\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2448) ctrl->io_queues[HCTX_TYPE_DEFAULT],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2449) ctrl->io_queues[HCTX_TYPE_READ],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2450) ctrl->io_queues[HCTX_TYPE_POLL]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2451)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2452) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2453) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2455) static int nvme_tcp_poll(struct blk_mq_hw_ctx *hctx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2456) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2457) struct nvme_tcp_queue *queue = hctx->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2458) struct sock *sk = queue->sock->sk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2459)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2460) if (!test_bit(NVME_TCP_Q_LIVE, &queue->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2461) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2462)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2463) set_bit(NVME_TCP_Q_POLLING, &queue->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2464) if (sk_can_busy_loop(sk) && skb_queue_empty_lockless(&sk->sk_receive_queue))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2465) sk_busy_loop(sk, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2466) nvme_tcp_try_recv(queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2467) clear_bit(NVME_TCP_Q_POLLING, &queue->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2468) return queue->nr_cqe;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2469) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2471) static const struct blk_mq_ops nvme_tcp_mq_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2472) .queue_rq = nvme_tcp_queue_rq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2473) .commit_rqs = nvme_tcp_commit_rqs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2474) .complete = nvme_complete_rq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2475) .init_request = nvme_tcp_init_request,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2476) .exit_request = nvme_tcp_exit_request,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2477) .init_hctx = nvme_tcp_init_hctx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2478) .timeout = nvme_tcp_timeout,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2479) .map_queues = nvme_tcp_map_queues,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2480) .poll = nvme_tcp_poll,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2481) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2483) static const struct blk_mq_ops nvme_tcp_admin_mq_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2484) .queue_rq = nvme_tcp_queue_rq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2485) .complete = nvme_complete_rq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2486) .init_request = nvme_tcp_init_request,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2487) .exit_request = nvme_tcp_exit_request,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2488) .init_hctx = nvme_tcp_init_admin_hctx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2489) .timeout = nvme_tcp_timeout,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2490) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2491)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2492) static const struct nvme_ctrl_ops nvme_tcp_ctrl_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2493) .name = "tcp",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2494) .module = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2495) .flags = NVME_F_FABRICS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2496) .reg_read32 = nvmf_reg_read32,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2497) .reg_read64 = nvmf_reg_read64,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2498) .reg_write32 = nvmf_reg_write32,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2499) .free_ctrl = nvme_tcp_free_ctrl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2500) .submit_async_event = nvme_tcp_submit_async_event,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2501) .delete_ctrl = nvme_tcp_delete_ctrl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2502) .get_address = nvmf_get_address,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2503) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2504)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2505) static bool
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2506) nvme_tcp_existing_controller(struct nvmf_ctrl_options *opts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2507) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2508) struct nvme_tcp_ctrl *ctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2509) bool found = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2510)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2511) mutex_lock(&nvme_tcp_ctrl_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2512) list_for_each_entry(ctrl, &nvme_tcp_ctrl_list, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2513) found = nvmf_ip_options_match(&ctrl->ctrl, opts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2514) if (found)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2515) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2516) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2517) mutex_unlock(&nvme_tcp_ctrl_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2518)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2519) return found;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2520) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2521)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2522) static struct nvme_ctrl *nvme_tcp_create_ctrl(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2523) struct nvmf_ctrl_options *opts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2524) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2525) struct nvme_tcp_ctrl *ctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2526) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2527)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2528) ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2529) if (!ctrl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2530) return ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2531)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2532) INIT_LIST_HEAD(&ctrl->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2533) ctrl->ctrl.opts = opts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2534) ctrl->ctrl.queue_count = opts->nr_io_queues + opts->nr_write_queues +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2535) opts->nr_poll_queues + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2536) ctrl->ctrl.sqsize = opts->queue_size - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2537) ctrl->ctrl.kato = opts->kato;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2538)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2539) INIT_DELAYED_WORK(&ctrl->connect_work,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2540) nvme_tcp_reconnect_ctrl_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2541) INIT_WORK(&ctrl->err_work, nvme_tcp_error_recovery_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2542) INIT_WORK(&ctrl->ctrl.reset_work, nvme_reset_ctrl_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2543)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2544) if (!(opts->mask & NVMF_OPT_TRSVCID)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2545) opts->trsvcid =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2546) kstrdup(__stringify(NVME_TCP_DISC_PORT), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2547) if (!opts->trsvcid) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2548) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2549) goto out_free_ctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2550) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2551) opts->mask |= NVMF_OPT_TRSVCID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2552) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2553)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2554) ret = inet_pton_with_scope(&init_net, AF_UNSPEC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2555) opts->traddr, opts->trsvcid, &ctrl->addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2556) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2557) pr_err("malformed address passed: %s:%s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2558) opts->traddr, opts->trsvcid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2559) goto out_free_ctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2560) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2561)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2562) if (opts->mask & NVMF_OPT_HOST_TRADDR) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2563) ret = inet_pton_with_scope(&init_net, AF_UNSPEC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2564) opts->host_traddr, NULL, &ctrl->src_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2565) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2566) pr_err("malformed src address passed: %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2567) opts->host_traddr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2568) goto out_free_ctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2569) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2570) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2571)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2572) if (!opts->duplicate_connect && nvme_tcp_existing_controller(opts)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2573) ret = -EALREADY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2574) goto out_free_ctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2575) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2576)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2577) ctrl->queues = kcalloc(ctrl->ctrl.queue_count, sizeof(*ctrl->queues),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2578) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2579) if (!ctrl->queues) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2580) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2581) goto out_free_ctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2582) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2583)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2584) ret = nvme_init_ctrl(&ctrl->ctrl, dev, &nvme_tcp_ctrl_ops, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2585) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2586) goto out_kfree_queues;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2587)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2588) if (!nvme_change_ctrl_state(&ctrl->ctrl, NVME_CTRL_CONNECTING)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2589) WARN_ON_ONCE(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2590) ret = -EINTR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2591) goto out_uninit_ctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2592) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2593)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2594) ret = nvme_tcp_setup_ctrl(&ctrl->ctrl, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2595) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2596) goto out_uninit_ctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2597)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2598) dev_info(ctrl->ctrl.device, "new ctrl: NQN \"%s\", addr %pISp\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2599) ctrl->ctrl.opts->subsysnqn, &ctrl->addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2600)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2601) mutex_lock(&nvme_tcp_ctrl_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2602) list_add_tail(&ctrl->list, &nvme_tcp_ctrl_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2603) mutex_unlock(&nvme_tcp_ctrl_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2604)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2605) return &ctrl->ctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2606)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2607) out_uninit_ctrl:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2608) nvme_uninit_ctrl(&ctrl->ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2609) nvme_put_ctrl(&ctrl->ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2610) if (ret > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2611) ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2612) return ERR_PTR(ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2613) out_kfree_queues:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2614) kfree(ctrl->queues);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2615) out_free_ctrl:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2616) kfree(ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2617) return ERR_PTR(ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2618) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2619)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2620) static struct nvmf_transport_ops nvme_tcp_transport = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2621) .name = "tcp",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2622) .module = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2623) .required_opts = NVMF_OPT_TRADDR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2624) .allowed_opts = NVMF_OPT_TRSVCID | NVMF_OPT_RECONNECT_DELAY |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2625) NVMF_OPT_HOST_TRADDR | NVMF_OPT_CTRL_LOSS_TMO |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2626) NVMF_OPT_HDR_DIGEST | NVMF_OPT_DATA_DIGEST |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2627) NVMF_OPT_NR_WRITE_QUEUES | NVMF_OPT_NR_POLL_QUEUES |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2628) NVMF_OPT_TOS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2629) .create_ctrl = nvme_tcp_create_ctrl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2630) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2631)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2632) static int __init nvme_tcp_init_module(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2633) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2634) nvme_tcp_wq = alloc_workqueue("nvme_tcp_wq",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2635) WQ_MEM_RECLAIM | WQ_HIGHPRI, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2636) if (!nvme_tcp_wq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2637) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2638)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2639) nvmf_register_transport(&nvme_tcp_transport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2640) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2641) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2642)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2643) static void __exit nvme_tcp_cleanup_module(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2644) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2645) struct nvme_tcp_ctrl *ctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2646)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2647) nvmf_unregister_transport(&nvme_tcp_transport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2648)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2649) mutex_lock(&nvme_tcp_ctrl_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2650) list_for_each_entry(ctrl, &nvme_tcp_ctrl_list, list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2651) nvme_delete_ctrl(&ctrl->ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2652) mutex_unlock(&nvme_tcp_ctrl_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2653) flush_workqueue(nvme_delete_wq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2654)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2655) destroy_workqueue(nvme_tcp_wq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2656) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2657)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2658) module_init(nvme_tcp_init_module);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2659) module_exit(nvme_tcp_cleanup_module);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2660)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2661) MODULE_LICENSE("GPL v2");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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