Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
| 2 | /* |
| 3 | * Copyright (c) 2020 Hannes Reinecke, SUSE Linux |
| 4 | */ |
| 5 | |
| 6 | #include <linux/crc32.h> |
| 7 | #include <linux/base64.h> |
| 8 | #include <linux/prandom.h> |
| 9 | #include <asm/unaligned.h> |
| 10 | #include <crypto/hash.h> |
| 11 | #include <crypto/dh.h> |
| 12 | #include "nvme.h" |
| 13 | #include "fabrics.h" |
| 14 | #include <linux/nvme-auth.h> |
| 15 | |
Sagi Grimberg | b7d604c | 2022-11-13 13:24:13 +0200 | [diff] [blame] | 16 | #define CHAP_BUF_SIZE 4096 |
Sagi Grimberg | e481fc0 | 2022-11-15 17:08:06 +0100 | [diff] [blame] | 17 | static struct kmem_cache *nvme_chap_buf_cache; |
| 18 | static mempool_t *nvme_chap_buf_pool; |
Sagi Grimberg | b7d604c | 2022-11-13 13:24:13 +0200 | [diff] [blame] | 19 | |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 20 | struct nvme_dhchap_queue_context { |
| 21 | struct list_head entry; |
| 22 | struct work_struct auth_work; |
| 23 | struct nvme_ctrl *ctrl; |
| 24 | struct crypto_shash *shash_tfm; |
Hannes Reinecke | b61775d | 2022-06-27 11:52:03 +0200 | [diff] [blame] | 25 | struct crypto_kpp *dh_tfm; |
Mark O'Donovan | f047dae | 2023-10-17 17:09:18 +0000 | [diff] [blame] | 26 | struct nvme_dhchap_key *transformed_key; |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 27 | void *buf; |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 28 | int qid; |
| 29 | int error; |
| 30 | u32 s1; |
| 31 | u32 s2; |
Mark O'Donovan | fc1e03e | 2023-10-25 10:51:24 +0000 | [diff] [blame] | 32 | bool bi_directional; |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 33 | u16 transaction; |
| 34 | u8 status; |
Christophe JAILLET | 0f5335e | 2023-05-01 14:40:28 +0200 | [diff] [blame] | 35 | u8 dhgroup_id; |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 36 | u8 hash_id; |
| 37 | size_t hash_len; |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 38 | u8 c1[64]; |
| 39 | u8 c2[64]; |
| 40 | u8 response[64]; |
Hannes Reinecke | b61775d | 2022-06-27 11:52:03 +0200 | [diff] [blame] | 41 | u8 *ctrl_key; |
Hannes Reinecke | b61775d | 2022-06-27 11:52:03 +0200 | [diff] [blame] | 42 | u8 *host_key; |
Hannes Reinecke | b61775d | 2022-06-27 11:52:03 +0200 | [diff] [blame] | 43 | u8 *sess_key; |
Christophe JAILLET | 0f5335e | 2023-05-01 14:40:28 +0200 | [diff] [blame] | 44 | int ctrl_key_len; |
| 45 | int host_key_len; |
Hannes Reinecke | b61775d | 2022-06-27 11:52:03 +0200 | [diff] [blame] | 46 | int sess_key_len; |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 47 | }; |
| 48 | |
Tom Rix | 70daa5c | 2023-02-06 06:57:00 -0800 | [diff] [blame] | 49 | static struct workqueue_struct *nvme_auth_wq; |
Shin'ichiro Kawasaki | bd97a59 | 2023-01-31 18:26:44 +0900 | [diff] [blame] | 50 | |
Sagi Grimberg | aa36d71 | 2022-11-13 13:24:20 +0200 | [diff] [blame] | 51 | static inline int ctrl_max_dhchaps(struct nvme_ctrl *ctrl) |
| 52 | { |
| 53 | return ctrl->opts->nr_io_queues + ctrl->opts->nr_write_queues + |
| 54 | ctrl->opts->nr_poll_queues + 1; |
| 55 | } |
| 56 | |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 57 | static int nvme_auth_submit(struct nvme_ctrl *ctrl, int qid, |
| 58 | void *data, size_t data_len, bool auth_send) |
| 59 | { |
| 60 | struct nvme_command cmd = {}; |
Hannes Reinecke | 48dae46 | 2024-01-29 07:39:48 +0100 | [diff] [blame] | 61 | nvme_submit_flags_t flags = NVME_SUBMIT_RETRY; |
Hannes Reinecke | f9ddefb | 2024-01-29 07:39:45 +0100 | [diff] [blame] | 62 | struct request_queue *q = ctrl->fabrics_q; |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 63 | int ret; |
| 64 | |
Hannes Reinecke | f9ddefb | 2024-01-29 07:39:45 +0100 | [diff] [blame] | 65 | if (qid != 0) { |
Hannes Reinecke | bd2687f | 2024-01-29 07:39:46 +0100 | [diff] [blame] | 66 | flags |= NVME_SUBMIT_NOWAIT | NVME_SUBMIT_RESERVED; |
Hannes Reinecke | f9ddefb | 2024-01-29 07:39:45 +0100 | [diff] [blame] | 67 | q = ctrl->connect_q; |
| 68 | } |
| 69 | |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 70 | cmd.auth_common.opcode = nvme_fabrics_command; |
| 71 | cmd.auth_common.secp = NVME_AUTH_DHCHAP_PROTOCOL_IDENTIFIER; |
| 72 | cmd.auth_common.spsp0 = 0x01; |
| 73 | cmd.auth_common.spsp1 = 0x01; |
| 74 | if (auth_send) { |
| 75 | cmd.auth_send.fctype = nvme_fabrics_type_auth_send; |
| 76 | cmd.auth_send.tl = cpu_to_le32(data_len); |
| 77 | } else { |
| 78 | cmd.auth_receive.fctype = nvme_fabrics_type_auth_receive; |
| 79 | cmd.auth_receive.al = cpu_to_le32(data_len); |
| 80 | } |
| 81 | |
| 82 | ret = __nvme_submit_sync_cmd(q, &cmd, NULL, data, data_len, |
Hannes Reinecke | bd2687f | 2024-01-29 07:39:46 +0100 | [diff] [blame] | 83 | qid == 0 ? NVME_QID_ANY : qid, flags); |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 84 | if (ret > 0) |
| 85 | dev_warn(ctrl->device, |
| 86 | "qid %d auth_send failed with status %d\n", qid, ret); |
| 87 | else if (ret < 0) |
| 88 | dev_err(ctrl->device, |
| 89 | "qid %d auth_send failed with error %d\n", qid, ret); |
| 90 | return ret; |
| 91 | } |
| 92 | |
| 93 | static int nvme_auth_receive_validate(struct nvme_ctrl *ctrl, int qid, |
| 94 | struct nvmf_auth_dhchap_failure_data *data, |
| 95 | u16 transaction, u8 expected_msg) |
| 96 | { |
| 97 | dev_dbg(ctrl->device, "%s: qid %d auth_type %d auth_id %x\n", |
| 98 | __func__, qid, data->auth_type, data->auth_id); |
| 99 | |
| 100 | if (data->auth_type == NVME_AUTH_COMMON_MESSAGES && |
| 101 | data->auth_id == NVME_AUTH_DHCHAP_MESSAGE_FAILURE1) { |
| 102 | return data->rescode_exp; |
| 103 | } |
| 104 | if (data->auth_type != NVME_AUTH_DHCHAP_MESSAGES || |
| 105 | data->auth_id != expected_msg) { |
| 106 | dev_warn(ctrl->device, |
| 107 | "qid %d invalid message %02x/%02x\n", |
| 108 | qid, data->auth_type, data->auth_id); |
| 109 | return NVME_AUTH_DHCHAP_FAILURE_INCORRECT_MESSAGE; |
| 110 | } |
| 111 | if (le16_to_cpu(data->t_id) != transaction) { |
| 112 | dev_warn(ctrl->device, |
| 113 | "qid %d invalid transaction ID %d\n", |
| 114 | qid, le16_to_cpu(data->t_id)); |
| 115 | return NVME_AUTH_DHCHAP_FAILURE_INCORRECT_MESSAGE; |
| 116 | } |
| 117 | return 0; |
| 118 | } |
| 119 | |
| 120 | static int nvme_auth_set_dhchap_negotiate_data(struct nvme_ctrl *ctrl, |
| 121 | struct nvme_dhchap_queue_context *chap) |
| 122 | { |
| 123 | struct nvmf_auth_dhchap_negotiate_data *data = chap->buf; |
| 124 | size_t size = sizeof(*data) + sizeof(union nvmf_auth_protocol); |
| 125 | |
Sagi Grimberg | b7d604c | 2022-11-13 13:24:13 +0200 | [diff] [blame] | 126 | if (size > CHAP_BUF_SIZE) { |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 127 | chap->status = NVME_AUTH_DHCHAP_FAILURE_INCORRECT_PAYLOAD; |
| 128 | return -EINVAL; |
| 129 | } |
| 130 | memset((u8 *)chap->buf, 0, size); |
| 131 | data->auth_type = NVME_AUTH_COMMON_MESSAGES; |
| 132 | data->auth_id = NVME_AUTH_DHCHAP_MESSAGE_NEGOTIATE; |
| 133 | data->t_id = cpu_to_le16(chap->transaction); |
| 134 | data->sc_c = 0; /* No secure channel concatenation */ |
| 135 | data->napd = 1; |
| 136 | data->auth_protocol[0].dhchap.authid = NVME_AUTH_DHCHAP_AUTH_ID; |
| 137 | data->auth_protocol[0].dhchap.halen = 3; |
| 138 | data->auth_protocol[0].dhchap.dhlen = 6; |
| 139 | data->auth_protocol[0].dhchap.idlist[0] = NVME_AUTH_HASH_SHA256; |
| 140 | data->auth_protocol[0].dhchap.idlist[1] = NVME_AUTH_HASH_SHA384; |
| 141 | data->auth_protocol[0].dhchap.idlist[2] = NVME_AUTH_HASH_SHA512; |
| 142 | data->auth_protocol[0].dhchap.idlist[30] = NVME_AUTH_DHGROUP_NULL; |
| 143 | data->auth_protocol[0].dhchap.idlist[31] = NVME_AUTH_DHGROUP_2048; |
| 144 | data->auth_protocol[0].dhchap.idlist[32] = NVME_AUTH_DHGROUP_3072; |
| 145 | data->auth_protocol[0].dhchap.idlist[33] = NVME_AUTH_DHGROUP_4096; |
| 146 | data->auth_protocol[0].dhchap.idlist[34] = NVME_AUTH_DHGROUP_6144; |
| 147 | data->auth_protocol[0].dhchap.idlist[35] = NVME_AUTH_DHGROUP_8192; |
| 148 | |
| 149 | return size; |
| 150 | } |
| 151 | |
| 152 | static int nvme_auth_process_dhchap_challenge(struct nvme_ctrl *ctrl, |
| 153 | struct nvme_dhchap_queue_context *chap) |
| 154 | { |
| 155 | struct nvmf_auth_dhchap_challenge_data *data = chap->buf; |
| 156 | u16 dhvlen = le16_to_cpu(data->dhvlen); |
| 157 | size_t size = sizeof(*data) + data->hl + dhvlen; |
Hannes Reinecke | b61775d | 2022-06-27 11:52:03 +0200 | [diff] [blame] | 158 | const char *gid_name = nvme_auth_dhgroup_name(data->dhgid); |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 159 | const char *hmac_name, *kpp_name; |
| 160 | |
Sagi Grimberg | b7d604c | 2022-11-13 13:24:13 +0200 | [diff] [blame] | 161 | if (size > CHAP_BUF_SIZE) { |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 162 | chap->status = NVME_AUTH_DHCHAP_FAILURE_INCORRECT_PAYLOAD; |
Hannes Reinecke | b0ef1b1 | 2022-12-13 20:00:26 +0100 | [diff] [blame] | 163 | return -EINVAL; |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 164 | } |
| 165 | |
| 166 | hmac_name = nvme_auth_hmac_name(data->hashid); |
| 167 | if (!hmac_name) { |
| 168 | dev_warn(ctrl->device, |
| 169 | "qid %d: invalid HASH ID %d\n", |
| 170 | chap->qid, data->hashid); |
| 171 | chap->status = NVME_AUTH_DHCHAP_FAILURE_HASH_UNUSABLE; |
Hannes Reinecke | b0ef1b1 | 2022-12-13 20:00:26 +0100 | [diff] [blame] | 172 | return -EPROTO; |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 173 | } |
| 174 | |
| 175 | if (chap->hash_id == data->hashid && chap->shash_tfm && |
| 176 | !strcmp(crypto_shash_alg_name(chap->shash_tfm), hmac_name) && |
| 177 | crypto_shash_digestsize(chap->shash_tfm) == data->hl) { |
| 178 | dev_dbg(ctrl->device, |
| 179 | "qid %d: reuse existing hash %s\n", |
| 180 | chap->qid, hmac_name); |
| 181 | goto select_kpp; |
| 182 | } |
| 183 | |
| 184 | /* Reset if hash cannot be reused */ |
| 185 | if (chap->shash_tfm) { |
| 186 | crypto_free_shash(chap->shash_tfm); |
| 187 | chap->hash_id = 0; |
| 188 | chap->hash_len = 0; |
| 189 | } |
| 190 | chap->shash_tfm = crypto_alloc_shash(hmac_name, 0, |
| 191 | CRYPTO_ALG_ALLOCATES_MEMORY); |
| 192 | if (IS_ERR(chap->shash_tfm)) { |
| 193 | dev_warn(ctrl->device, |
| 194 | "qid %d: failed to allocate hash %s, error %ld\n", |
| 195 | chap->qid, hmac_name, PTR_ERR(chap->shash_tfm)); |
| 196 | chap->shash_tfm = NULL; |
| 197 | chap->status = NVME_AUTH_DHCHAP_FAILURE_FAILED; |
Hannes Reinecke | b0ef1b1 | 2022-12-13 20:00:26 +0100 | [diff] [blame] | 198 | return -ENOMEM; |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 199 | } |
| 200 | |
| 201 | if (crypto_shash_digestsize(chap->shash_tfm) != data->hl) { |
| 202 | dev_warn(ctrl->device, |
| 203 | "qid %d: invalid hash length %d\n", |
| 204 | chap->qid, data->hl); |
| 205 | crypto_free_shash(chap->shash_tfm); |
| 206 | chap->shash_tfm = NULL; |
| 207 | chap->status = NVME_AUTH_DHCHAP_FAILURE_HASH_UNUSABLE; |
Hannes Reinecke | b0ef1b1 | 2022-12-13 20:00:26 +0100 | [diff] [blame] | 208 | return -EPROTO; |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 209 | } |
| 210 | |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 211 | chap->hash_id = data->hashid; |
| 212 | chap->hash_len = data->hl; |
| 213 | dev_dbg(ctrl->device, "qid %d: selected hash %s\n", |
| 214 | chap->qid, hmac_name); |
| 215 | |
| 216 | select_kpp: |
| 217 | kpp_name = nvme_auth_dhgroup_kpp(data->dhgid); |
| 218 | if (!kpp_name) { |
| 219 | dev_warn(ctrl->device, |
| 220 | "qid %d: invalid DH group id %d\n", |
| 221 | chap->qid, data->dhgid); |
| 222 | chap->status = NVME_AUTH_DHCHAP_FAILURE_DHGROUP_UNUSABLE; |
Hannes Reinecke | b61775d | 2022-06-27 11:52:03 +0200 | [diff] [blame] | 223 | /* Leave previous dh_tfm intact */ |
Hannes Reinecke | b0ef1b1 | 2022-12-13 20:00:26 +0100 | [diff] [blame] | 224 | return -EPROTO; |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 225 | } |
| 226 | |
Hannes Reinecke | b61775d | 2022-06-27 11:52:03 +0200 | [diff] [blame] | 227 | if (chap->dhgroup_id == data->dhgid && |
| 228 | (data->dhgid == NVME_AUTH_DHGROUP_NULL || chap->dh_tfm)) { |
| 229 | dev_dbg(ctrl->device, |
| 230 | "qid %d: reuse existing DH group %s\n", |
| 231 | chap->qid, gid_name); |
| 232 | goto skip_kpp; |
| 233 | } |
| 234 | |
| 235 | /* Reset dh_tfm if it can't be reused */ |
| 236 | if (chap->dh_tfm) { |
| 237 | crypto_free_kpp(chap->dh_tfm); |
| 238 | chap->dh_tfm = NULL; |
| 239 | } |
| 240 | |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 241 | if (data->dhgid != NVME_AUTH_DHGROUP_NULL) { |
Hannes Reinecke | b61775d | 2022-06-27 11:52:03 +0200 | [diff] [blame] | 242 | if (dhvlen == 0) { |
| 243 | dev_warn(ctrl->device, |
| 244 | "qid %d: empty DH value\n", |
| 245 | chap->qid); |
| 246 | chap->status = NVME_AUTH_DHCHAP_FAILURE_DHGROUP_UNUSABLE; |
Hannes Reinecke | b0ef1b1 | 2022-12-13 20:00:26 +0100 | [diff] [blame] | 247 | return -EPROTO; |
Hannes Reinecke | b61775d | 2022-06-27 11:52:03 +0200 | [diff] [blame] | 248 | } |
| 249 | |
| 250 | chap->dh_tfm = crypto_alloc_kpp(kpp_name, 0, 0); |
| 251 | if (IS_ERR(chap->dh_tfm)) { |
| 252 | int ret = PTR_ERR(chap->dh_tfm); |
| 253 | |
| 254 | dev_warn(ctrl->device, |
| 255 | "qid %d: error %d initializing DH group %s\n", |
| 256 | chap->qid, ret, gid_name); |
| 257 | chap->status = NVME_AUTH_DHCHAP_FAILURE_DHGROUP_UNUSABLE; |
| 258 | chap->dh_tfm = NULL; |
Dan Carpenter | 51d24f7 | 2023-02-16 15:14:49 +0300 | [diff] [blame] | 259 | return ret; |
Hannes Reinecke | b61775d | 2022-06-27 11:52:03 +0200 | [diff] [blame] | 260 | } |
| 261 | dev_dbg(ctrl->device, "qid %d: selected DH group %s\n", |
| 262 | chap->qid, gid_name); |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 263 | } else if (dhvlen != 0) { |
| 264 | dev_warn(ctrl->device, |
| 265 | "qid %d: invalid DH value for NULL DH\n", |
| 266 | chap->qid); |
| 267 | chap->status = NVME_AUTH_DHCHAP_FAILURE_INCORRECT_PAYLOAD; |
Hannes Reinecke | b0ef1b1 | 2022-12-13 20:00:26 +0100 | [diff] [blame] | 268 | return -EPROTO; |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 269 | } |
| 270 | chap->dhgroup_id = data->dhgid; |
| 271 | |
Hannes Reinecke | b61775d | 2022-06-27 11:52:03 +0200 | [diff] [blame] | 272 | skip_kpp: |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 273 | chap->s1 = le32_to_cpu(data->seqnum); |
| 274 | memcpy(chap->c1, data->cval, chap->hash_len); |
Hannes Reinecke | b61775d | 2022-06-27 11:52:03 +0200 | [diff] [blame] | 275 | if (dhvlen) { |
| 276 | chap->ctrl_key = kmalloc(dhvlen, GFP_KERNEL); |
| 277 | if (!chap->ctrl_key) { |
| 278 | chap->status = NVME_AUTH_DHCHAP_FAILURE_FAILED; |
Hannes Reinecke | b0ef1b1 | 2022-12-13 20:00:26 +0100 | [diff] [blame] | 279 | return -ENOMEM; |
Hannes Reinecke | b61775d | 2022-06-27 11:52:03 +0200 | [diff] [blame] | 280 | } |
| 281 | chap->ctrl_key_len = dhvlen; |
| 282 | memcpy(chap->ctrl_key, data->cval + chap->hash_len, |
| 283 | dhvlen); |
| 284 | dev_dbg(ctrl->device, "ctrl public key %*ph\n", |
| 285 | (int)chap->ctrl_key_len, chap->ctrl_key); |
| 286 | } |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 287 | |
| 288 | return 0; |
| 289 | } |
| 290 | |
| 291 | static int nvme_auth_set_dhchap_reply_data(struct nvme_ctrl *ctrl, |
| 292 | struct nvme_dhchap_queue_context *chap) |
| 293 | { |
| 294 | struct nvmf_auth_dhchap_reply_data *data = chap->buf; |
| 295 | size_t size = sizeof(*data); |
| 296 | |
| 297 | size += 2 * chap->hash_len; |
| 298 | |
Hannes Reinecke | b61775d | 2022-06-27 11:52:03 +0200 | [diff] [blame] | 299 | if (chap->host_key_len) |
| 300 | size += chap->host_key_len; |
| 301 | |
Sagi Grimberg | b7d604c | 2022-11-13 13:24:13 +0200 | [diff] [blame] | 302 | if (size > CHAP_BUF_SIZE) { |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 303 | chap->status = NVME_AUTH_DHCHAP_FAILURE_INCORRECT_PAYLOAD; |
| 304 | return -EINVAL; |
| 305 | } |
| 306 | |
| 307 | memset(chap->buf, 0, size); |
| 308 | data->auth_type = NVME_AUTH_DHCHAP_MESSAGES; |
| 309 | data->auth_id = NVME_AUTH_DHCHAP_MESSAGE_REPLY; |
| 310 | data->t_id = cpu_to_le16(chap->transaction); |
| 311 | data->hl = chap->hash_len; |
Hannes Reinecke | b61775d | 2022-06-27 11:52:03 +0200 | [diff] [blame] | 312 | data->dhvlen = cpu_to_le16(chap->host_key_len); |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 313 | memcpy(data->rval, chap->response, chap->hash_len); |
| 314 | if (ctrl->ctrl_key) { |
Mark O'Donovan | fc1e03e | 2023-10-25 10:51:24 +0000 | [diff] [blame] | 315 | chap->bi_directional = true; |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 316 | get_random_bytes(chap->c2, chap->hash_len); |
| 317 | data->cvalid = 1; |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 318 | memcpy(data->rval + chap->hash_len, chap->c2, |
| 319 | chap->hash_len); |
| 320 | dev_dbg(ctrl->device, "%s: qid %d ctrl challenge %*ph\n", |
| 321 | __func__, chap->qid, (int)chap->hash_len, chap->c2); |
| 322 | } else { |
| 323 | memset(chap->c2, 0, chap->hash_len); |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 324 | } |
Mark O'Donovan | 6f66d04 | 2023-10-25 10:51:25 +0000 | [diff] [blame] | 325 | chap->s2 = nvme_auth_get_seqnum(); |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 326 | data->seqnum = cpu_to_le32(chap->s2); |
Hannes Reinecke | b61775d | 2022-06-27 11:52:03 +0200 | [diff] [blame] | 327 | if (chap->host_key_len) { |
| 328 | dev_dbg(ctrl->device, "%s: qid %d host public key %*ph\n", |
| 329 | __func__, chap->qid, |
| 330 | chap->host_key_len, chap->host_key); |
| 331 | memcpy(data->rval + 2 * chap->hash_len, chap->host_key, |
| 332 | chap->host_key_len); |
| 333 | } |
| 334 | |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 335 | return size; |
| 336 | } |
| 337 | |
| 338 | static int nvme_auth_process_dhchap_success1(struct nvme_ctrl *ctrl, |
| 339 | struct nvme_dhchap_queue_context *chap) |
| 340 | { |
| 341 | struct nvmf_auth_dhchap_success1_data *data = chap->buf; |
Mark O'Donovan | 7527684 | 2023-10-25 10:51:23 +0000 | [diff] [blame] | 342 | size_t size = sizeof(*data) + chap->hash_len; |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 343 | |
Sagi Grimberg | b7d604c | 2022-11-13 13:24:13 +0200 | [diff] [blame] | 344 | if (size > CHAP_BUF_SIZE) { |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 345 | chap->status = NVME_AUTH_DHCHAP_FAILURE_INCORRECT_PAYLOAD; |
Hannes Reinecke | b0ef1b1 | 2022-12-13 20:00:26 +0100 | [diff] [blame] | 346 | return -EINVAL; |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 347 | } |
| 348 | |
| 349 | if (data->hl != chap->hash_len) { |
| 350 | dev_warn(ctrl->device, |
| 351 | "qid %d: invalid hash length %u\n", |
| 352 | chap->qid, data->hl); |
| 353 | chap->status = NVME_AUTH_DHCHAP_FAILURE_HASH_UNUSABLE; |
Hannes Reinecke | b0ef1b1 | 2022-12-13 20:00:26 +0100 | [diff] [blame] | 354 | return -EPROTO; |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 355 | } |
| 356 | |
| 357 | /* Just print out information for the admin queue */ |
| 358 | if (chap->qid == 0) |
| 359 | dev_info(ctrl->device, |
| 360 | "qid 0: authenticated with hash %s dhgroup %s\n", |
| 361 | nvme_auth_hmac_name(chap->hash_id), |
| 362 | nvme_auth_dhgroup_name(chap->dhgroup_id)); |
| 363 | |
| 364 | if (!data->rvalid) |
| 365 | return 0; |
| 366 | |
| 367 | /* Validate controller response */ |
| 368 | if (memcmp(chap->response, data->rval, data->hl)) { |
| 369 | dev_dbg(ctrl->device, "%s: qid %d ctrl response %*ph\n", |
| 370 | __func__, chap->qid, (int)chap->hash_len, data->rval); |
| 371 | dev_dbg(ctrl->device, "%s: qid %d host response %*ph\n", |
| 372 | __func__, chap->qid, (int)chap->hash_len, |
| 373 | chap->response); |
| 374 | dev_warn(ctrl->device, |
| 375 | "qid %d: controller authentication failed\n", |
| 376 | chap->qid); |
| 377 | chap->status = NVME_AUTH_DHCHAP_FAILURE_FAILED; |
Hannes Reinecke | b0ef1b1 | 2022-12-13 20:00:26 +0100 | [diff] [blame] | 378 | return -ECONNREFUSED; |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 379 | } |
| 380 | |
| 381 | /* Just print out information for the admin queue */ |
| 382 | if (chap->qid == 0) |
| 383 | dev_info(ctrl->device, |
| 384 | "qid 0: controller authenticated\n"); |
| 385 | return 0; |
| 386 | } |
| 387 | |
| 388 | static int nvme_auth_set_dhchap_success2_data(struct nvme_ctrl *ctrl, |
| 389 | struct nvme_dhchap_queue_context *chap) |
| 390 | { |
| 391 | struct nvmf_auth_dhchap_success2_data *data = chap->buf; |
| 392 | size_t size = sizeof(*data); |
| 393 | |
| 394 | memset(chap->buf, 0, size); |
| 395 | data->auth_type = NVME_AUTH_DHCHAP_MESSAGES; |
| 396 | data->auth_id = NVME_AUTH_DHCHAP_MESSAGE_SUCCESS2; |
| 397 | data->t_id = cpu_to_le16(chap->transaction); |
| 398 | |
| 399 | return size; |
| 400 | } |
| 401 | |
| 402 | static int nvme_auth_set_dhchap_failure2_data(struct nvme_ctrl *ctrl, |
| 403 | struct nvme_dhchap_queue_context *chap) |
| 404 | { |
| 405 | struct nvmf_auth_dhchap_failure_data *data = chap->buf; |
| 406 | size_t size = sizeof(*data); |
| 407 | |
| 408 | memset(chap->buf, 0, size); |
| 409 | data->auth_type = NVME_AUTH_COMMON_MESSAGES; |
| 410 | data->auth_id = NVME_AUTH_DHCHAP_MESSAGE_FAILURE2; |
| 411 | data->t_id = cpu_to_le16(chap->transaction); |
| 412 | data->rescode = NVME_AUTH_DHCHAP_FAILURE_REASON_FAILED; |
| 413 | data->rescode_exp = chap->status; |
| 414 | |
| 415 | return size; |
| 416 | } |
| 417 | |
| 418 | static int nvme_auth_dhchap_setup_host_response(struct nvme_ctrl *ctrl, |
| 419 | struct nvme_dhchap_queue_context *chap) |
| 420 | { |
| 421 | SHASH_DESC_ON_STACK(shash, chap->shash_tfm); |
| 422 | u8 buf[4], *challenge = chap->c1; |
| 423 | int ret; |
| 424 | |
| 425 | dev_dbg(ctrl->device, "%s: qid %d host response seq %u transaction %d\n", |
| 426 | __func__, chap->qid, chap->s1, chap->transaction); |
| 427 | |
Mark O'Donovan | f047dae | 2023-10-17 17:09:18 +0000 | [diff] [blame] | 428 | if (!chap->transformed_key) { |
| 429 | chap->transformed_key = nvme_auth_transform_key(ctrl->host_key, |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 430 | ctrl->opts->host->nqn); |
Mark O'Donovan | f047dae | 2023-10-17 17:09:18 +0000 | [diff] [blame] | 431 | if (IS_ERR(chap->transformed_key)) { |
| 432 | ret = PTR_ERR(chap->transformed_key); |
| 433 | chap->transformed_key = NULL; |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 434 | return ret; |
| 435 | } |
| 436 | } else { |
| 437 | dev_dbg(ctrl->device, "%s: qid %d re-using host response\n", |
| 438 | __func__, chap->qid); |
| 439 | } |
| 440 | |
| 441 | ret = crypto_shash_setkey(chap->shash_tfm, |
Mark O'Donovan | f047dae | 2023-10-17 17:09:18 +0000 | [diff] [blame] | 442 | chap->transformed_key->key, chap->transformed_key->len); |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 443 | if (ret) { |
| 444 | dev_warn(ctrl->device, "qid %d: failed to set key, error %d\n", |
| 445 | chap->qid, ret); |
| 446 | goto out; |
| 447 | } |
| 448 | |
Hannes Reinecke | b61775d | 2022-06-27 11:52:03 +0200 | [diff] [blame] | 449 | if (chap->dh_tfm) { |
| 450 | challenge = kmalloc(chap->hash_len, GFP_KERNEL); |
| 451 | if (!challenge) { |
| 452 | ret = -ENOMEM; |
| 453 | goto out; |
| 454 | } |
| 455 | ret = nvme_auth_augmented_challenge(chap->hash_id, |
| 456 | chap->sess_key, |
| 457 | chap->sess_key_len, |
| 458 | chap->c1, challenge, |
| 459 | chap->hash_len); |
| 460 | if (ret) |
| 461 | goto out; |
| 462 | } |
| 463 | |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 464 | shash->tfm = chap->shash_tfm; |
| 465 | ret = crypto_shash_init(shash); |
| 466 | if (ret) |
| 467 | goto out; |
| 468 | ret = crypto_shash_update(shash, challenge, chap->hash_len); |
| 469 | if (ret) |
| 470 | goto out; |
| 471 | put_unaligned_le32(chap->s1, buf); |
| 472 | ret = crypto_shash_update(shash, buf, 4); |
| 473 | if (ret) |
| 474 | goto out; |
| 475 | put_unaligned_le16(chap->transaction, buf); |
| 476 | ret = crypto_shash_update(shash, buf, 2); |
| 477 | if (ret) |
| 478 | goto out; |
| 479 | memset(buf, 0, sizeof(buf)); |
| 480 | ret = crypto_shash_update(shash, buf, 1); |
| 481 | if (ret) |
| 482 | goto out; |
| 483 | ret = crypto_shash_update(shash, "HostHost", 8); |
| 484 | if (ret) |
| 485 | goto out; |
| 486 | ret = crypto_shash_update(shash, ctrl->opts->host->nqn, |
| 487 | strlen(ctrl->opts->host->nqn)); |
| 488 | if (ret) |
| 489 | goto out; |
| 490 | ret = crypto_shash_update(shash, buf, 1); |
| 491 | if (ret) |
| 492 | goto out; |
| 493 | ret = crypto_shash_update(shash, ctrl->opts->subsysnqn, |
| 494 | strlen(ctrl->opts->subsysnqn)); |
| 495 | if (ret) |
| 496 | goto out; |
| 497 | ret = crypto_shash_final(shash, chap->response); |
| 498 | out: |
| 499 | if (challenge != chap->c1) |
| 500 | kfree(challenge); |
| 501 | return ret; |
| 502 | } |
| 503 | |
| 504 | static int nvme_auth_dhchap_setup_ctrl_response(struct nvme_ctrl *ctrl, |
| 505 | struct nvme_dhchap_queue_context *chap) |
| 506 | { |
| 507 | SHASH_DESC_ON_STACK(shash, chap->shash_tfm); |
Mark O'Donovan | f047dae | 2023-10-17 17:09:18 +0000 | [diff] [blame] | 508 | struct nvme_dhchap_key *transformed_key; |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 509 | u8 buf[4], *challenge = chap->c2; |
| 510 | int ret; |
| 511 | |
Mark O'Donovan | f047dae | 2023-10-17 17:09:18 +0000 | [diff] [blame] | 512 | transformed_key = nvme_auth_transform_key(ctrl->ctrl_key, |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 513 | ctrl->opts->subsysnqn); |
Mark O'Donovan | f047dae | 2023-10-17 17:09:18 +0000 | [diff] [blame] | 514 | if (IS_ERR(transformed_key)) { |
| 515 | ret = PTR_ERR(transformed_key); |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 516 | return ret; |
| 517 | } |
Sagi Grimberg | aa36d71 | 2022-11-13 13:24:20 +0200 | [diff] [blame] | 518 | |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 519 | ret = crypto_shash_setkey(chap->shash_tfm, |
Mark O'Donovan | f047dae | 2023-10-17 17:09:18 +0000 | [diff] [blame] | 520 | transformed_key->key, transformed_key->len); |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 521 | if (ret) { |
| 522 | dev_warn(ctrl->device, "qid %d: failed to set key, error %d\n", |
| 523 | chap->qid, ret); |
| 524 | goto out; |
| 525 | } |
| 526 | |
Hannes Reinecke | b61775d | 2022-06-27 11:52:03 +0200 | [diff] [blame] | 527 | if (chap->dh_tfm) { |
| 528 | challenge = kmalloc(chap->hash_len, GFP_KERNEL); |
| 529 | if (!challenge) { |
| 530 | ret = -ENOMEM; |
| 531 | goto out; |
| 532 | } |
| 533 | ret = nvme_auth_augmented_challenge(chap->hash_id, |
| 534 | chap->sess_key, |
| 535 | chap->sess_key_len, |
| 536 | chap->c2, challenge, |
| 537 | chap->hash_len); |
| 538 | if (ret) |
| 539 | goto out; |
| 540 | } |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 541 | dev_dbg(ctrl->device, "%s: qid %d ctrl response seq %u transaction %d\n", |
| 542 | __func__, chap->qid, chap->s2, chap->transaction); |
| 543 | dev_dbg(ctrl->device, "%s: qid %d challenge %*ph\n", |
| 544 | __func__, chap->qid, (int)chap->hash_len, challenge); |
| 545 | dev_dbg(ctrl->device, "%s: qid %d subsysnqn %s\n", |
| 546 | __func__, chap->qid, ctrl->opts->subsysnqn); |
| 547 | dev_dbg(ctrl->device, "%s: qid %d hostnqn %s\n", |
| 548 | __func__, chap->qid, ctrl->opts->host->nqn); |
| 549 | shash->tfm = chap->shash_tfm; |
| 550 | ret = crypto_shash_init(shash); |
| 551 | if (ret) |
| 552 | goto out; |
| 553 | ret = crypto_shash_update(shash, challenge, chap->hash_len); |
| 554 | if (ret) |
| 555 | goto out; |
| 556 | put_unaligned_le32(chap->s2, buf); |
| 557 | ret = crypto_shash_update(shash, buf, 4); |
| 558 | if (ret) |
| 559 | goto out; |
| 560 | put_unaligned_le16(chap->transaction, buf); |
| 561 | ret = crypto_shash_update(shash, buf, 2); |
| 562 | if (ret) |
| 563 | goto out; |
| 564 | memset(buf, 0, 4); |
| 565 | ret = crypto_shash_update(shash, buf, 1); |
| 566 | if (ret) |
| 567 | goto out; |
| 568 | ret = crypto_shash_update(shash, "Controller", 10); |
| 569 | if (ret) |
| 570 | goto out; |
| 571 | ret = crypto_shash_update(shash, ctrl->opts->subsysnqn, |
| 572 | strlen(ctrl->opts->subsysnqn)); |
| 573 | if (ret) |
| 574 | goto out; |
| 575 | ret = crypto_shash_update(shash, buf, 1); |
| 576 | if (ret) |
| 577 | goto out; |
| 578 | ret = crypto_shash_update(shash, ctrl->opts->host->nqn, |
| 579 | strlen(ctrl->opts->host->nqn)); |
| 580 | if (ret) |
| 581 | goto out; |
| 582 | ret = crypto_shash_final(shash, chap->response); |
| 583 | out: |
| 584 | if (challenge != chap->c2) |
| 585 | kfree(challenge); |
Mark O'Donovan | f047dae | 2023-10-17 17:09:18 +0000 | [diff] [blame] | 586 | nvme_auth_free_key(transformed_key); |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 587 | return ret; |
| 588 | } |
| 589 | |
Hannes Reinecke | b61775d | 2022-06-27 11:52:03 +0200 | [diff] [blame] | 590 | static int nvme_auth_dhchap_exponential(struct nvme_ctrl *ctrl, |
| 591 | struct nvme_dhchap_queue_context *chap) |
| 592 | { |
| 593 | int ret; |
| 594 | |
| 595 | if (chap->host_key && chap->host_key_len) { |
| 596 | dev_dbg(ctrl->device, |
| 597 | "qid %d: reusing host key\n", chap->qid); |
| 598 | goto gen_sesskey; |
| 599 | } |
| 600 | ret = nvme_auth_gen_privkey(chap->dh_tfm, chap->dhgroup_id); |
| 601 | if (ret < 0) { |
| 602 | chap->status = NVME_AUTH_DHCHAP_FAILURE_INCORRECT_PAYLOAD; |
| 603 | return ret; |
| 604 | } |
| 605 | |
| 606 | chap->host_key_len = crypto_kpp_maxsize(chap->dh_tfm); |
| 607 | |
| 608 | chap->host_key = kzalloc(chap->host_key_len, GFP_KERNEL); |
| 609 | if (!chap->host_key) { |
| 610 | chap->host_key_len = 0; |
| 611 | chap->status = NVME_AUTH_DHCHAP_FAILURE_FAILED; |
| 612 | return -ENOMEM; |
| 613 | } |
| 614 | ret = nvme_auth_gen_pubkey(chap->dh_tfm, |
| 615 | chap->host_key, chap->host_key_len); |
| 616 | if (ret) { |
| 617 | dev_dbg(ctrl->device, |
| 618 | "failed to generate public key, error %d\n", ret); |
Hannes Reinecke | b61775d | 2022-06-27 11:52:03 +0200 | [diff] [blame] | 619 | chap->status = NVME_AUTH_DHCHAP_FAILURE_INCORRECT_PAYLOAD; |
| 620 | return ret; |
| 621 | } |
| 622 | |
| 623 | gen_sesskey: |
| 624 | chap->sess_key_len = chap->host_key_len; |
| 625 | chap->sess_key = kmalloc(chap->sess_key_len, GFP_KERNEL); |
| 626 | if (!chap->sess_key) { |
| 627 | chap->sess_key_len = 0; |
| 628 | chap->status = NVME_AUTH_DHCHAP_FAILURE_FAILED; |
| 629 | return -ENOMEM; |
| 630 | } |
| 631 | |
| 632 | ret = nvme_auth_gen_shared_secret(chap->dh_tfm, |
| 633 | chap->ctrl_key, chap->ctrl_key_len, |
| 634 | chap->sess_key, chap->sess_key_len); |
| 635 | if (ret) { |
| 636 | dev_dbg(ctrl->device, |
| 637 | "failed to generate shared secret, error %d\n", ret); |
Hannes Reinecke | b61775d | 2022-06-27 11:52:03 +0200 | [diff] [blame] | 638 | chap->status = NVME_AUTH_DHCHAP_FAILURE_INCORRECT_PAYLOAD; |
| 639 | return ret; |
| 640 | } |
| 641 | dev_dbg(ctrl->device, "shared secret %*ph\n", |
| 642 | (int)chap->sess_key_len, chap->sess_key); |
| 643 | return 0; |
| 644 | } |
| 645 | |
Sagi Grimberg | 0a7ce37 | 2022-11-13 13:24:05 +0200 | [diff] [blame] | 646 | static void nvme_auth_reset_dhchap(struct nvme_dhchap_queue_context *chap) |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 647 | { |
Mark O'Donovan | f047dae | 2023-10-17 17:09:18 +0000 | [diff] [blame] | 648 | nvme_auth_free_key(chap->transformed_key); |
| 649 | chap->transformed_key = NULL; |
Hannes Reinecke | b61775d | 2022-06-27 11:52:03 +0200 | [diff] [blame] | 650 | kfree_sensitive(chap->host_key); |
| 651 | chap->host_key = NULL; |
| 652 | chap->host_key_len = 0; |
| 653 | kfree_sensitive(chap->ctrl_key); |
| 654 | chap->ctrl_key = NULL; |
| 655 | chap->ctrl_key_len = 0; |
| 656 | kfree_sensitive(chap->sess_key); |
| 657 | chap->sess_key = NULL; |
| 658 | chap->sess_key_len = 0; |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 659 | chap->status = 0; |
| 660 | chap->error = 0; |
| 661 | chap->s1 = 0; |
| 662 | chap->s2 = 0; |
Mark O'Donovan | fc1e03e | 2023-10-25 10:51:24 +0000 | [diff] [blame] | 663 | chap->bi_directional = false; |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 664 | chap->transaction = 0; |
| 665 | memset(chap->c1, 0, sizeof(chap->c1)); |
| 666 | memset(chap->c2, 0, sizeof(chap->c2)); |
Sagi Grimberg | e481fc0 | 2022-11-15 17:08:06 +0100 | [diff] [blame] | 667 | mempool_free(chap->buf, nvme_chap_buf_pool); |
Sagi Grimberg | b7d604c | 2022-11-13 13:24:13 +0200 | [diff] [blame] | 668 | chap->buf = NULL; |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 669 | } |
| 670 | |
Sagi Grimberg | 0a7ce37 | 2022-11-13 13:24:05 +0200 | [diff] [blame] | 671 | static void nvme_auth_free_dhchap(struct nvme_dhchap_queue_context *chap) |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 672 | { |
Sagi Grimberg | 0a7ce37 | 2022-11-13 13:24:05 +0200 | [diff] [blame] | 673 | nvme_auth_reset_dhchap(chap); |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 674 | if (chap->shash_tfm) |
| 675 | crypto_free_shash(chap->shash_tfm); |
Hannes Reinecke | b61775d | 2022-06-27 11:52:03 +0200 | [diff] [blame] | 676 | if (chap->dh_tfm) |
| 677 | crypto_free_kpp(chap->dh_tfm); |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 678 | } |
| 679 | |
Sagi Grimberg | 0c999e6 | 2022-11-13 13:24:06 +0200 | [diff] [blame] | 680 | static void nvme_queue_auth_work(struct work_struct *work) |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 681 | { |
| 682 | struct nvme_dhchap_queue_context *chap = |
| 683 | container_of(work, struct nvme_dhchap_queue_context, auth_work); |
| 684 | struct nvme_ctrl *ctrl = chap->ctrl; |
| 685 | size_t tl; |
| 686 | int ret = 0; |
| 687 | |
Sagi Grimberg | b7d604c | 2022-11-13 13:24:13 +0200 | [diff] [blame] | 688 | /* |
| 689 | * Allocate a large enough buffer for the entire negotiation: |
| 690 | * 4k is enough to ffdhe8192. |
| 691 | */ |
Sagi Grimberg | e481fc0 | 2022-11-15 17:08:06 +0100 | [diff] [blame] | 692 | chap->buf = mempool_alloc(nvme_chap_buf_pool, GFP_KERNEL); |
Sagi Grimberg | b7d604c | 2022-11-13 13:24:13 +0200 | [diff] [blame] | 693 | if (!chap->buf) { |
| 694 | chap->error = -ENOMEM; |
| 695 | return; |
| 696 | } |
| 697 | |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 698 | chap->transaction = ctrl->transaction++; |
| 699 | |
| 700 | /* DH-HMAC-CHAP Step 1: send negotiate */ |
| 701 | dev_dbg(ctrl->device, "%s: qid %d send negotiate\n", |
| 702 | __func__, chap->qid); |
| 703 | ret = nvme_auth_set_dhchap_negotiate_data(ctrl, chap); |
| 704 | if (ret < 0) { |
| 705 | chap->error = ret; |
| 706 | return; |
| 707 | } |
| 708 | tl = ret; |
| 709 | ret = nvme_auth_submit(ctrl, chap->qid, chap->buf, tl, true); |
| 710 | if (ret) { |
| 711 | chap->error = ret; |
| 712 | return; |
| 713 | } |
| 714 | |
| 715 | /* DH-HMAC-CHAP Step 2: receive challenge */ |
| 716 | dev_dbg(ctrl->device, "%s: qid %d receive challenge\n", |
| 717 | __func__, chap->qid); |
| 718 | |
Sagi Grimberg | b7d604c | 2022-11-13 13:24:13 +0200 | [diff] [blame] | 719 | memset(chap->buf, 0, CHAP_BUF_SIZE); |
| 720 | ret = nvme_auth_submit(ctrl, chap->qid, chap->buf, CHAP_BUF_SIZE, |
| 721 | false); |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 722 | if (ret) { |
| 723 | dev_warn(ctrl->device, |
| 724 | "qid %d failed to receive challenge, %s %d\n", |
| 725 | chap->qid, ret < 0 ? "error" : "nvme status", ret); |
| 726 | chap->error = ret; |
| 727 | return; |
| 728 | } |
| 729 | ret = nvme_auth_receive_validate(ctrl, chap->qid, chap->buf, chap->transaction, |
| 730 | NVME_AUTH_DHCHAP_MESSAGE_CHALLENGE); |
| 731 | if (ret) { |
| 732 | chap->status = ret; |
Daniel Wagner | 0e34bd9 | 2024-04-30 15:19:28 +0200 | [diff] [blame] | 733 | chap->error = -EKEYREJECTED; |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 734 | return; |
| 735 | } |
| 736 | |
| 737 | ret = nvme_auth_process_dhchap_challenge(ctrl, chap); |
| 738 | if (ret) { |
| 739 | /* Invalid challenge parameters */ |
| 740 | chap->error = ret; |
| 741 | goto fail2; |
| 742 | } |
| 743 | |
Hannes Reinecke | b61775d | 2022-06-27 11:52:03 +0200 | [diff] [blame] | 744 | if (chap->ctrl_key_len) { |
| 745 | dev_dbg(ctrl->device, |
| 746 | "%s: qid %d DH exponential\n", |
| 747 | __func__, chap->qid); |
| 748 | ret = nvme_auth_dhchap_exponential(ctrl, chap); |
| 749 | if (ret) { |
| 750 | chap->error = ret; |
| 751 | goto fail2; |
| 752 | } |
| 753 | } |
| 754 | |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 755 | dev_dbg(ctrl->device, "%s: qid %d host response\n", |
| 756 | __func__, chap->qid); |
Sagi Grimberg | aa36d71 | 2022-11-13 13:24:20 +0200 | [diff] [blame] | 757 | mutex_lock(&ctrl->dhchap_auth_mutex); |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 758 | ret = nvme_auth_dhchap_setup_host_response(ctrl, chap); |
Mark O'Donovan | 616add7 | 2023-10-11 08:45:11 +0000 | [diff] [blame] | 759 | mutex_unlock(&ctrl->dhchap_auth_mutex); |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 760 | if (ret) { |
| 761 | chap->error = ret; |
| 762 | goto fail2; |
| 763 | } |
| 764 | |
| 765 | /* DH-HMAC-CHAP Step 3: send reply */ |
| 766 | dev_dbg(ctrl->device, "%s: qid %d send reply\n", |
| 767 | __func__, chap->qid); |
| 768 | ret = nvme_auth_set_dhchap_reply_data(ctrl, chap); |
| 769 | if (ret < 0) { |
| 770 | chap->error = ret; |
| 771 | goto fail2; |
| 772 | } |
| 773 | |
| 774 | tl = ret; |
| 775 | ret = nvme_auth_submit(ctrl, chap->qid, chap->buf, tl, true); |
| 776 | if (ret) { |
| 777 | chap->error = ret; |
| 778 | goto fail2; |
| 779 | } |
| 780 | |
| 781 | /* DH-HMAC-CHAP Step 4: receive success1 */ |
| 782 | dev_dbg(ctrl->device, "%s: qid %d receive success1\n", |
| 783 | __func__, chap->qid); |
| 784 | |
Sagi Grimberg | b7d604c | 2022-11-13 13:24:13 +0200 | [diff] [blame] | 785 | memset(chap->buf, 0, CHAP_BUF_SIZE); |
| 786 | ret = nvme_auth_submit(ctrl, chap->qid, chap->buf, CHAP_BUF_SIZE, |
| 787 | false); |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 788 | if (ret) { |
| 789 | dev_warn(ctrl->device, |
| 790 | "qid %d failed to receive success1, %s %d\n", |
| 791 | chap->qid, ret < 0 ? "error" : "nvme status", ret); |
| 792 | chap->error = ret; |
| 793 | return; |
| 794 | } |
| 795 | ret = nvme_auth_receive_validate(ctrl, chap->qid, |
| 796 | chap->buf, chap->transaction, |
| 797 | NVME_AUTH_DHCHAP_MESSAGE_SUCCESS1); |
| 798 | if (ret) { |
| 799 | chap->status = ret; |
Daniel Wagner | 0e34bd9 | 2024-04-30 15:19:28 +0200 | [diff] [blame] | 800 | chap->error = -EKEYREJECTED; |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 801 | return; |
| 802 | } |
| 803 | |
Sagi Grimberg | aa36d71 | 2022-11-13 13:24:20 +0200 | [diff] [blame] | 804 | mutex_lock(&ctrl->dhchap_auth_mutex); |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 805 | if (ctrl->ctrl_key) { |
| 806 | dev_dbg(ctrl->device, |
| 807 | "%s: qid %d controller response\n", |
| 808 | __func__, chap->qid); |
| 809 | ret = nvme_auth_dhchap_setup_ctrl_response(ctrl, chap); |
| 810 | if (ret) { |
Sagi Grimberg | aa36d71 | 2022-11-13 13:24:20 +0200 | [diff] [blame] | 811 | mutex_unlock(&ctrl->dhchap_auth_mutex); |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 812 | chap->error = ret; |
| 813 | goto fail2; |
| 814 | } |
| 815 | } |
Sagi Grimberg | aa36d71 | 2022-11-13 13:24:20 +0200 | [diff] [blame] | 816 | mutex_unlock(&ctrl->dhchap_auth_mutex); |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 817 | |
| 818 | ret = nvme_auth_process_dhchap_success1(ctrl, chap); |
| 819 | if (ret) { |
| 820 | /* Controller authentication failed */ |
Daniel Wagner | 0e34bd9 | 2024-04-30 15:19:28 +0200 | [diff] [blame] | 821 | chap->error = -EKEYREJECTED; |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 822 | goto fail2; |
| 823 | } |
| 824 | |
Mark O'Donovan | fc1e03e | 2023-10-25 10:51:24 +0000 | [diff] [blame] | 825 | if (chap->bi_directional) { |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 826 | /* DH-HMAC-CHAP Step 5: send success2 */ |
| 827 | dev_dbg(ctrl->device, "%s: qid %d send success2\n", |
| 828 | __func__, chap->qid); |
| 829 | tl = nvme_auth_set_dhchap_success2_data(ctrl, chap); |
| 830 | ret = nvme_auth_submit(ctrl, chap->qid, chap->buf, tl, true); |
| 831 | if (ret) |
| 832 | chap->error = ret; |
| 833 | } |
| 834 | if (!ret) { |
| 835 | chap->error = 0; |
| 836 | return; |
| 837 | } |
| 838 | |
| 839 | fail2: |
Mark O'Donovan | 38ce157 | 2023-10-11 08:45:12 +0000 | [diff] [blame] | 840 | if (chap->status == 0) |
| 841 | chap->status = NVME_AUTH_DHCHAP_FAILURE_FAILED; |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 842 | dev_dbg(ctrl->device, "%s: qid %d send failure2, status %x\n", |
| 843 | __func__, chap->qid, chap->status); |
| 844 | tl = nvme_auth_set_dhchap_failure2_data(ctrl, chap); |
| 845 | ret = nvme_auth_submit(ctrl, chap->qid, chap->buf, tl, true); |
| 846 | /* |
| 847 | * only update error if send failure2 failed and no other |
| 848 | * error had been set during authentication. |
| 849 | */ |
| 850 | if (ret && !chap->error) |
| 851 | chap->error = ret; |
| 852 | } |
| 853 | |
| 854 | int nvme_auth_negotiate(struct nvme_ctrl *ctrl, int qid) |
| 855 | { |
| 856 | struct nvme_dhchap_queue_context *chap; |
| 857 | |
| 858 | if (!ctrl->host_key) { |
| 859 | dev_warn(ctrl->device, "qid %d: no key\n", qid); |
| 860 | return -ENOKEY; |
| 861 | } |
| 862 | |
| 863 | if (ctrl->opts->dhchap_ctrl_secret && !ctrl->ctrl_key) { |
| 864 | dev_warn(ctrl->device, "qid %d: invalid ctrl key\n", qid); |
| 865 | return -ENOKEY; |
| 866 | } |
| 867 | |
Sagi Grimberg | aa36d71 | 2022-11-13 13:24:20 +0200 | [diff] [blame] | 868 | chap = &ctrl->dhchap_ctxs[qid]; |
| 869 | cancel_work_sync(&chap->auth_work); |
Shin'ichiro Kawasaki | bd97a59 | 2023-01-31 18:26:44 +0900 | [diff] [blame] | 870 | queue_work(nvme_auth_wq, &chap->auth_work); |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 871 | return 0; |
| 872 | } |
| 873 | EXPORT_SYMBOL_GPL(nvme_auth_negotiate); |
| 874 | |
| 875 | int nvme_auth_wait(struct nvme_ctrl *ctrl, int qid) |
| 876 | { |
| 877 | struct nvme_dhchap_queue_context *chap; |
| 878 | int ret; |
| 879 | |
Sagi Grimberg | aa36d71 | 2022-11-13 13:24:20 +0200 | [diff] [blame] | 880 | chap = &ctrl->dhchap_ctxs[qid]; |
| 881 | flush_work(&chap->auth_work); |
| 882 | ret = chap->error; |
| 883 | /* clear sensitive info */ |
| 884 | nvme_auth_reset_dhchap(chap); |
| 885 | return ret; |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 886 | } |
| 887 | EXPORT_SYMBOL_GPL(nvme_auth_wait); |
| 888 | |
Sagi Grimberg | 0c999e6 | 2022-11-13 13:24:06 +0200 | [diff] [blame] | 889 | static void nvme_ctrl_auth_work(struct work_struct *work) |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 890 | { |
| 891 | struct nvme_ctrl *ctrl = |
| 892 | container_of(work, struct nvme_ctrl, dhchap_auth_work); |
| 893 | int ret, q; |
| 894 | |
Sagi Grimberg | c7390f1 | 2022-11-13 13:24:08 +0200 | [diff] [blame] | 895 | /* |
| 896 | * If the ctrl is no connected, bail as reconnect will handle |
| 897 | * authentication. |
| 898 | */ |
Keith Busch | 6d3c7fb | 2024-01-24 09:27:27 -0800 | [diff] [blame] | 899 | if (nvme_ctrl_state(ctrl) != NVME_CTRL_LIVE) |
Sagi Grimberg | c7390f1 | 2022-11-13 13:24:08 +0200 | [diff] [blame] | 900 | return; |
| 901 | |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 902 | /* Authenticate admin queue first */ |
| 903 | ret = nvme_auth_negotiate(ctrl, 0); |
| 904 | if (ret) { |
| 905 | dev_warn(ctrl->device, |
| 906 | "qid 0: error %d setting up authentication\n", ret); |
| 907 | return; |
| 908 | } |
| 909 | ret = nvme_auth_wait(ctrl, 0); |
| 910 | if (ret) { |
| 911 | dev_warn(ctrl->device, |
| 912 | "qid 0: authentication failed\n"); |
| 913 | return; |
| 914 | } |
| 915 | |
| 916 | for (q = 1; q < ctrl->queue_count; q++) { |
| 917 | ret = nvme_auth_negotiate(ctrl, q); |
| 918 | if (ret) { |
| 919 | dev_warn(ctrl->device, |
| 920 | "qid %d: error %d setting up authentication\n", |
| 921 | q, ret); |
| 922 | break; |
| 923 | } |
| 924 | } |
| 925 | |
| 926 | /* |
| 927 | * Failure is a soft-state; credentials remain valid until |
| 928 | * the controller terminates the connection. |
| 929 | */ |
Sagi Grimberg | d061a1b | 2022-11-13 13:24:22 +0200 | [diff] [blame] | 930 | for (q = 1; q < ctrl->queue_count; q++) { |
| 931 | ret = nvme_auth_wait(ctrl, q); |
| 932 | if (ret) |
| 933 | dev_warn(ctrl->device, |
| 934 | "qid %d: authentication failed\n", q); |
| 935 | } |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 936 | } |
| 937 | |
Sagi Grimberg | 193a8c7 | 2022-11-13 13:24:10 +0200 | [diff] [blame] | 938 | int nvme_auth_init_ctrl(struct nvme_ctrl *ctrl) |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 939 | { |
Sagi Grimberg | aa36d71 | 2022-11-13 13:24:20 +0200 | [diff] [blame] | 940 | struct nvme_dhchap_queue_context *chap; |
| 941 | int i, ret; |
Sagi Grimberg | 193a8c7 | 2022-11-13 13:24:10 +0200 | [diff] [blame] | 942 | |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 943 | mutex_init(&ctrl->dhchap_auth_mutex); |
Sagi Grimberg | aa36d71 | 2022-11-13 13:24:20 +0200 | [diff] [blame] | 944 | INIT_WORK(&ctrl->dhchap_auth_work, nvme_ctrl_auth_work); |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 945 | if (!ctrl->opts) |
Sagi Grimberg | 193a8c7 | 2022-11-13 13:24:10 +0200 | [diff] [blame] | 946 | return 0; |
| 947 | ret = nvme_auth_generate_key(ctrl->opts->dhchap_secret, |
| 948 | &ctrl->host_key); |
| 949 | if (ret) |
| 950 | return ret; |
| 951 | ret = nvme_auth_generate_key(ctrl->opts->dhchap_ctrl_secret, |
| 952 | &ctrl->ctrl_key); |
Sagi Grimberg | aa36d71 | 2022-11-13 13:24:20 +0200 | [diff] [blame] | 953 | if (ret) |
| 954 | goto err_free_dhchap_secret; |
| 955 | |
| 956 | if (!ctrl->opts->dhchap_secret && !ctrl->opts->dhchap_ctrl_secret) |
Sagi Grimberg | 76807fc | 2022-12-25 13:28:51 +0200 | [diff] [blame] | 957 | return 0; |
Sagi Grimberg | aa36d71 | 2022-11-13 13:24:20 +0200 | [diff] [blame] | 958 | |
| 959 | ctrl->dhchap_ctxs = kvcalloc(ctrl_max_dhchaps(ctrl), |
| 960 | sizeof(*chap), GFP_KERNEL); |
| 961 | if (!ctrl->dhchap_ctxs) { |
| 962 | ret = -ENOMEM; |
| 963 | goto err_free_dhchap_ctrl_secret; |
Sagi Grimberg | 193a8c7 | 2022-11-13 13:24:10 +0200 | [diff] [blame] | 964 | } |
Sagi Grimberg | aa36d71 | 2022-11-13 13:24:20 +0200 | [diff] [blame] | 965 | |
| 966 | for (i = 0; i < ctrl_max_dhchaps(ctrl); i++) { |
| 967 | chap = &ctrl->dhchap_ctxs[i]; |
| 968 | chap->qid = i; |
| 969 | chap->ctrl = ctrl; |
| 970 | INIT_WORK(&chap->auth_work, nvme_queue_auth_work); |
| 971 | } |
| 972 | |
| 973 | return 0; |
| 974 | err_free_dhchap_ctrl_secret: |
| 975 | nvme_auth_free_key(ctrl->ctrl_key); |
| 976 | ctrl->ctrl_key = NULL; |
| 977 | err_free_dhchap_secret: |
| 978 | nvme_auth_free_key(ctrl->host_key); |
| 979 | ctrl->host_key = NULL; |
Sagi Grimberg | 193a8c7 | 2022-11-13 13:24:10 +0200 | [diff] [blame] | 980 | return ret; |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 981 | } |
| 982 | EXPORT_SYMBOL_GPL(nvme_auth_init_ctrl); |
| 983 | |
| 984 | void nvme_auth_stop(struct nvme_ctrl *ctrl) |
| 985 | { |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 986 | cancel_work_sync(&ctrl->dhchap_auth_work); |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 987 | } |
| 988 | EXPORT_SYMBOL_GPL(nvme_auth_stop); |
| 989 | |
| 990 | void nvme_auth_free(struct nvme_ctrl *ctrl) |
| 991 | { |
Sagi Grimberg | aa36d71 | 2022-11-13 13:24:20 +0200 | [diff] [blame] | 992 | int i; |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 993 | |
Sagi Grimberg | aa36d71 | 2022-11-13 13:24:20 +0200 | [diff] [blame] | 994 | if (ctrl->dhchap_ctxs) { |
Sagi Grimberg | a2a00d2 | 2022-11-13 13:24:21 +0200 | [diff] [blame] | 995 | for (i = 0; i < ctrl_max_dhchaps(ctrl); i++) |
| 996 | nvme_auth_free_dhchap(&ctrl->dhchap_ctxs[i]); |
Sagi Grimberg | aa36d71 | 2022-11-13 13:24:20 +0200 | [diff] [blame] | 997 | kfree(ctrl->dhchap_ctxs); |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 998 | } |
Hannes Reinecke | f50fff7 | 2022-06-27 11:52:02 +0200 | [diff] [blame] | 999 | if (ctrl->host_key) { |
| 1000 | nvme_auth_free_key(ctrl->host_key); |
| 1001 | ctrl->host_key = NULL; |
| 1002 | } |
| 1003 | if (ctrl->ctrl_key) { |
| 1004 | nvme_auth_free_key(ctrl->ctrl_key); |
| 1005 | ctrl->ctrl_key = NULL; |
| 1006 | } |
| 1007 | } |
| 1008 | EXPORT_SYMBOL_GPL(nvme_auth_free); |
Sagi Grimberg | e481fc0 | 2022-11-15 17:08:06 +0100 | [diff] [blame] | 1009 | |
| 1010 | int __init nvme_init_auth(void) |
| 1011 | { |
Shin'ichiro Kawasaki | bd97a59 | 2023-01-31 18:26:44 +0900 | [diff] [blame] | 1012 | nvme_auth_wq = alloc_workqueue("nvme-auth-wq", |
| 1013 | WQ_UNBOUND | WQ_MEM_RECLAIM | WQ_SYSFS, 0); |
| 1014 | if (!nvme_auth_wq) |
| 1015 | return -ENOMEM; |
| 1016 | |
Sagi Grimberg | e481fc0 | 2022-11-15 17:08:06 +0100 | [diff] [blame] | 1017 | nvme_chap_buf_cache = kmem_cache_create("nvme-chap-buf-cache", |
| 1018 | CHAP_BUF_SIZE, 0, SLAB_HWCACHE_ALIGN, NULL); |
| 1019 | if (!nvme_chap_buf_cache) |
Shin'ichiro Kawasaki | bd97a59 | 2023-01-31 18:26:44 +0900 | [diff] [blame] | 1020 | goto err_destroy_workqueue; |
Sagi Grimberg | e481fc0 | 2022-11-15 17:08:06 +0100 | [diff] [blame] | 1021 | |
| 1022 | nvme_chap_buf_pool = mempool_create(16, mempool_alloc_slab, |
| 1023 | mempool_free_slab, nvme_chap_buf_cache); |
| 1024 | if (!nvme_chap_buf_pool) |
| 1025 | goto err_destroy_chap_buf_cache; |
| 1026 | |
| 1027 | return 0; |
| 1028 | err_destroy_chap_buf_cache: |
| 1029 | kmem_cache_destroy(nvme_chap_buf_cache); |
Shin'ichiro Kawasaki | bd97a59 | 2023-01-31 18:26:44 +0900 | [diff] [blame] | 1030 | err_destroy_workqueue: |
| 1031 | destroy_workqueue(nvme_auth_wq); |
Sagi Grimberg | e481fc0 | 2022-11-15 17:08:06 +0100 | [diff] [blame] | 1032 | return -ENOMEM; |
| 1033 | } |
| 1034 | |
| 1035 | void __exit nvme_exit_auth(void) |
| 1036 | { |
| 1037 | mempool_destroy(nvme_chap_buf_pool); |
| 1038 | kmem_cache_destroy(nvme_chap_buf_cache); |
Shin'ichiro Kawasaki | bd97a59 | 2023-01-31 18:26:44 +0900 | [diff] [blame] | 1039 | destroy_workqueue(nvme_auth_wq); |
Sagi Grimberg | e481fc0 | 2022-11-15 17:08:06 +0100 | [diff] [blame] | 1040 | } |