c596ea4bd5
Existing code only update the subsystem's poll group reservation information when unregistering the key, however, new registrant and update the key actions also need to be updated. Change-Id: Ib8db9eb457977757251403edb92eda073b846e59 Signed-off-by: Changpeng Liu <changpeng.liu@intel.com> Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/451274 Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Liang Yan <liang.z.yan@intel.com> Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com> Reviewed-by: Jim Harris <james.r.harris@intel.com>
2025 lines
53 KiB
C
2025 lines
53 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright (c) Intel Corporation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "spdk/stdinc.h"
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#include "nvmf_internal.h"
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#include "transport.h"
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#include "spdk/event.h"
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#include "spdk/likely.h"
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#include "spdk/string.h"
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#include "spdk/trace.h"
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#include "spdk/nvmf_spec.h"
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#include "spdk/uuid.h"
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#include "spdk/bdev_module.h"
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#include "spdk_internal/log.h"
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#include "spdk_internal/utf.h"
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/*
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* States for parsing valid domains in NQNs according to RFC 1034
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*/
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enum spdk_nvmf_nqn_domain_states {
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/* First character of a domain must be a letter */
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SPDK_NVMF_DOMAIN_ACCEPT_LETTER = 0,
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/* Subsequent characters can be any of letter, digit, or hyphen */
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SPDK_NVMF_DOMAIN_ACCEPT_LDH = 1,
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/* A domain label must end with either a letter or digit */
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SPDK_NVMF_DOMAIN_ACCEPT_ANY = 2
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};
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/* Returns true if is a valid ASCII string as defined by the NVMe spec */
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static bool
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spdk_nvmf_valid_ascii_string(const void *buf, size_t size)
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{
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const uint8_t *str = buf;
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size_t i;
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for (i = 0; i < size; i++) {
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if (str[i] < 0x20 || str[i] > 0x7E) {
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return false;
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}
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}
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return true;
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}
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static bool
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spdk_nvmf_valid_nqn(const char *nqn)
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{
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size_t len;
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struct spdk_uuid uuid_value;
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uint32_t i;
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int bytes_consumed;
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uint32_t domain_label_length;
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char *reverse_domain_end;
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uint32_t reverse_domain_end_index;
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enum spdk_nvmf_nqn_domain_states domain_state = SPDK_NVMF_DOMAIN_ACCEPT_LETTER;
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/* Check for length requirements */
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len = strlen(nqn);
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if (len > SPDK_NVMF_NQN_MAX_LEN) {
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SPDK_ERRLOG("Invalid NQN \"%s\": length %zu > max %d\n", nqn, len, SPDK_NVMF_NQN_MAX_LEN);
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return false;
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}
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/* The nqn must be at least as long as SPDK_NVMF_NQN_MIN_LEN to contain the necessary prefix. */
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if (len < SPDK_NVMF_NQN_MIN_LEN) {
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SPDK_ERRLOG("Invalid NQN \"%s\": length %zu < min %d\n", nqn, len, SPDK_NVMF_NQN_MIN_LEN);
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return false;
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}
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/* Check for discovery controller nqn */
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if (!strcmp(nqn, SPDK_NVMF_DISCOVERY_NQN)) {
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return true;
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}
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/* Check for equality with the generic nqn structure of the form "nqn.2014-08.org.nvmexpress:uuid:11111111-2222-3333-4444-555555555555" */
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if (!strncmp(nqn, SPDK_NVMF_NQN_UUID_PRE, SPDK_NVMF_NQN_UUID_PRE_LEN)) {
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if (len != SPDK_NVMF_NQN_UUID_PRE_LEN + SPDK_NVMF_UUID_STRING_LEN) {
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SPDK_ERRLOG("Invalid NQN \"%s\": uuid is not the correct length\n", nqn);
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return false;
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}
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if (spdk_uuid_parse(&uuid_value, &nqn[SPDK_NVMF_NQN_UUID_PRE_LEN])) {
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SPDK_ERRLOG("Invalid NQN \"%s\": uuid is not formatted correctly\n", nqn);
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return false;
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}
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return true;
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}
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/* If the nqn does not match the uuid structure, the next several checks validate the form "nqn.yyyy-mm.reverse.domain:user-string" */
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if (strncmp(nqn, "nqn.", 4) != 0) {
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SPDK_ERRLOG("Invalid NQN \"%s\": NQN must begin with \"nqn.\".\n", nqn);
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return false;
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}
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/* Check for yyyy-mm. */
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if (!(isdigit(nqn[4]) && isdigit(nqn[5]) && isdigit(nqn[6]) && isdigit(nqn[7]) &&
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nqn[8] == '-' && isdigit(nqn[9]) && isdigit(nqn[10]) && nqn[11] == '.')) {
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SPDK_ERRLOG("Invalid date code in NQN \"%s\"\n", nqn);
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return false;
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}
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reverse_domain_end = strchr(nqn, ':');
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if (reverse_domain_end != NULL && (reverse_domain_end_index = reverse_domain_end - nqn) < len - 1) {
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} else {
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SPDK_ERRLOG("Invalid NQN \"%s\". NQN must contain user specified name with a ':' as a prefix.\n",
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nqn);
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return false;
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}
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/* Check for valid reverse domain */
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domain_label_length = 0;
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for (i = 12; i < reverse_domain_end_index; i++) {
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if (domain_label_length > SPDK_DOMAIN_LABEL_MAX_LEN) {
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SPDK_ERRLOG("Invalid domain name in NQN \"%s\". At least one Label is too long.\n", nqn);
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return false;
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}
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switch (domain_state) {
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case SPDK_NVMF_DOMAIN_ACCEPT_LETTER: {
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if (isalpha(nqn[i])) {
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domain_state = SPDK_NVMF_DOMAIN_ACCEPT_ANY;
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domain_label_length++;
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break;
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} else {
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SPDK_ERRLOG("Invalid domain name in NQN \"%s\". Label names must start with a letter.\n", nqn);
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return false;
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}
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}
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case SPDK_NVMF_DOMAIN_ACCEPT_LDH: {
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if (isalpha(nqn[i]) || isdigit(nqn[i])) {
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domain_state = SPDK_NVMF_DOMAIN_ACCEPT_ANY;
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domain_label_length++;
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break;
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} else if (nqn[i] == '-') {
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if (i == reverse_domain_end_index - 1) {
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SPDK_ERRLOG("Invalid domain name in NQN \"%s\". Label names must end with an alphanumeric symbol.\n",
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nqn);
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return false;
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}
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domain_state = SPDK_NVMF_DOMAIN_ACCEPT_LDH;
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domain_label_length++;
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break;
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} else if (nqn[i] == '.') {
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SPDK_ERRLOG("Invalid domain name in NQN \"%s\". Label names must end with an alphanumeric symbol.\n",
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nqn);
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return false;
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} else {
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SPDK_ERRLOG("Invalid domain name in NQN \"%s\". Label names must contain only [a-z,A-Z,0-9,'-','.'].\n",
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nqn);
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return false;
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}
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}
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case SPDK_NVMF_DOMAIN_ACCEPT_ANY: {
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if (isalpha(nqn[i]) || isdigit(nqn[i])) {
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domain_state = SPDK_NVMF_DOMAIN_ACCEPT_ANY;
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domain_label_length++;
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break;
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} else if (nqn[i] == '-') {
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if (i == reverse_domain_end_index - 1) {
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SPDK_ERRLOG("Invalid domain name in NQN \"%s\". Label names must end with an alphanumeric symbol.\n",
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nqn);
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return false;
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}
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domain_state = SPDK_NVMF_DOMAIN_ACCEPT_LDH;
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domain_label_length++;
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break;
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} else if (nqn[i] == '.') {
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domain_state = SPDK_NVMF_DOMAIN_ACCEPT_LETTER;
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domain_label_length = 0;
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break;
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} else {
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SPDK_ERRLOG("Invalid domain name in NQN \"%s\". Label names must contain only [a-z,A-Z,0-9,'-','.'].\n",
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nqn);
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return false;
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}
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}
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}
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}
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i = reverse_domain_end_index + 1;
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while (i < len) {
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bytes_consumed = utf8_valid(&nqn[i], &nqn[len]);
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if (bytes_consumed <= 0) {
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SPDK_ERRLOG("Invalid domain name in NQN \"%s\". Label names must contain only valid utf-8.\n", nqn);
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return false;
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}
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i += bytes_consumed;
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}
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return true;
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}
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struct spdk_nvmf_subsystem *
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spdk_nvmf_subsystem_create(struct spdk_nvmf_tgt *tgt,
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const char *nqn,
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enum spdk_nvmf_subtype type,
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uint32_t num_ns)
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{
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struct spdk_nvmf_subsystem *subsystem;
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uint32_t sid;
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if (spdk_nvmf_tgt_find_subsystem(tgt, nqn)) {
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SPDK_ERRLOG("Subsystem NQN '%s' already exists\n", nqn);
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return NULL;
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}
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if (!spdk_nvmf_valid_nqn(nqn)) {
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return NULL;
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}
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if (type == SPDK_NVMF_SUBTYPE_DISCOVERY && num_ns != 0) {
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SPDK_ERRLOG("Discovery subsystem cannot have namespaces.\n");
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return NULL;
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}
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/* Find a free subsystem id (sid) */
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for (sid = 0; sid < tgt->max_subsystems; sid++) {
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if (tgt->subsystems[sid] == NULL) {
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break;
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}
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}
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if (sid >= tgt->max_subsystems) {
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return NULL;
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}
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subsystem = calloc(1, sizeof(struct spdk_nvmf_subsystem));
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if (subsystem == NULL) {
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return NULL;
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}
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subsystem->thread = spdk_get_thread();
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subsystem->state = SPDK_NVMF_SUBSYSTEM_INACTIVE;
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subsystem->tgt = tgt;
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subsystem->id = sid;
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subsystem->subtype = type;
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subsystem->max_nsid = num_ns;
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subsystem->max_allowed_nsid = num_ns;
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subsystem->next_cntlid = 0;
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snprintf(subsystem->subnqn, sizeof(subsystem->subnqn), "%s", nqn);
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TAILQ_INIT(&subsystem->listeners);
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TAILQ_INIT(&subsystem->hosts);
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TAILQ_INIT(&subsystem->ctrlrs);
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if (num_ns != 0) {
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subsystem->ns = calloc(num_ns, sizeof(struct spdk_nvmf_ns *));
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if (subsystem->ns == NULL) {
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SPDK_ERRLOG("Namespace memory allocation failed\n");
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free(subsystem);
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return NULL;
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}
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}
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memset(subsystem->sn, '0', sizeof(subsystem->sn) - 1);
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subsystem->sn[sizeof(subsystem->sn) - 1] = '\0';
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tgt->subsystems[sid] = subsystem;
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tgt->discovery_genctr++;
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return subsystem;
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}
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static void
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_spdk_nvmf_subsystem_remove_host(struct spdk_nvmf_subsystem *subsystem, struct spdk_nvmf_host *host)
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{
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TAILQ_REMOVE(&subsystem->hosts, host, link);
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free(host->nqn);
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free(host);
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}
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static int _spdk_nvmf_subsystem_remove_ns(struct spdk_nvmf_subsystem *subsystem, uint32_t nsid);
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static void
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_nvmf_subsystem_remove_listener(struct spdk_nvmf_subsystem *subsystem,
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struct spdk_nvmf_listener *listener)
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{
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struct spdk_nvmf_transport *transport;
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transport = spdk_nvmf_tgt_get_transport(subsystem->tgt, listener->trid.trtype);
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if (transport != NULL) {
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spdk_nvmf_transport_stop_listen(transport, &listener->trid);
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}
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TAILQ_REMOVE(&subsystem->listeners, listener, link);
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free(listener);
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}
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void
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spdk_nvmf_subsystem_destroy(struct spdk_nvmf_subsystem *subsystem)
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{
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struct spdk_nvmf_listener *listener, *listener_tmp;
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struct spdk_nvmf_host *host, *host_tmp;
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struct spdk_nvmf_ctrlr *ctrlr, *ctrlr_tmp;
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struct spdk_nvmf_ns *ns;
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if (!subsystem) {
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return;
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}
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assert(subsystem->state == SPDK_NVMF_SUBSYSTEM_INACTIVE);
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SPDK_DEBUGLOG(SPDK_LOG_NVMF, "subsystem is %p\n", subsystem);
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TAILQ_FOREACH_SAFE(listener, &subsystem->listeners, link, listener_tmp) {
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_nvmf_subsystem_remove_listener(subsystem, listener);
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}
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TAILQ_FOREACH_SAFE(host, &subsystem->hosts, link, host_tmp) {
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_spdk_nvmf_subsystem_remove_host(subsystem, host);
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}
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TAILQ_FOREACH_SAFE(ctrlr, &subsystem->ctrlrs, link, ctrlr_tmp) {
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spdk_nvmf_ctrlr_destruct(ctrlr);
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}
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ns = spdk_nvmf_subsystem_get_first_ns(subsystem);
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while (ns != NULL) {
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struct spdk_nvmf_ns *next_ns = spdk_nvmf_subsystem_get_next_ns(subsystem, ns);
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_spdk_nvmf_subsystem_remove_ns(subsystem, ns->opts.nsid);
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ns = next_ns;
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}
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free(subsystem->ns);
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subsystem->tgt->subsystems[subsystem->id] = NULL;
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subsystem->tgt->discovery_genctr++;
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free(subsystem);
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}
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static int
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spdk_nvmf_subsystem_set_state(struct spdk_nvmf_subsystem *subsystem,
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enum spdk_nvmf_subsystem_state state)
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{
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enum spdk_nvmf_subsystem_state actual_old_state, expected_old_state;
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switch (state) {
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case SPDK_NVMF_SUBSYSTEM_INACTIVE:
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expected_old_state = SPDK_NVMF_SUBSYSTEM_DEACTIVATING;
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break;
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case SPDK_NVMF_SUBSYSTEM_ACTIVATING:
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expected_old_state = SPDK_NVMF_SUBSYSTEM_INACTIVE;
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break;
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case SPDK_NVMF_SUBSYSTEM_ACTIVE:
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expected_old_state = SPDK_NVMF_SUBSYSTEM_ACTIVATING;
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break;
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case SPDK_NVMF_SUBSYSTEM_PAUSING:
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expected_old_state = SPDK_NVMF_SUBSYSTEM_ACTIVE;
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break;
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case SPDK_NVMF_SUBSYSTEM_PAUSED:
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expected_old_state = SPDK_NVMF_SUBSYSTEM_PAUSING;
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break;
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case SPDK_NVMF_SUBSYSTEM_RESUMING:
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expected_old_state = SPDK_NVMF_SUBSYSTEM_PAUSED;
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break;
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case SPDK_NVMF_SUBSYSTEM_DEACTIVATING:
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expected_old_state = SPDK_NVMF_SUBSYSTEM_ACTIVE;
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break;
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default:
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assert(false);
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return -1;
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}
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actual_old_state = __sync_val_compare_and_swap(&subsystem->state, expected_old_state, state);
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if (actual_old_state != expected_old_state) {
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if (actual_old_state == SPDK_NVMF_SUBSYSTEM_RESUMING &&
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state == SPDK_NVMF_SUBSYSTEM_ACTIVE) {
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expected_old_state = SPDK_NVMF_SUBSYSTEM_RESUMING;
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}
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/* This is for the case when activating the subsystem fails. */
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if (actual_old_state == SPDK_NVMF_SUBSYSTEM_ACTIVATING &&
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state == SPDK_NVMF_SUBSYSTEM_DEACTIVATING) {
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expected_old_state = SPDK_NVMF_SUBSYSTEM_ACTIVATING;
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}
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actual_old_state = __sync_val_compare_and_swap(&subsystem->state, expected_old_state, state);
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}
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assert(actual_old_state == expected_old_state);
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return actual_old_state - expected_old_state;
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}
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struct subsystem_state_change_ctx {
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struct spdk_nvmf_subsystem *subsystem;
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enum spdk_nvmf_subsystem_state requested_state;
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spdk_nvmf_subsystem_state_change_done cb_fn;
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void *cb_arg;
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};
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static void
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subsystem_state_change_done(struct spdk_io_channel_iter *i, int status)
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{
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struct subsystem_state_change_ctx *ctx = spdk_io_channel_iter_get_ctx(i);
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if (status == 0) {
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status = spdk_nvmf_subsystem_set_state(ctx->subsystem, ctx->requested_state);
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if (status) {
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status = -1;
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}
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}
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if (ctx->cb_fn) {
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ctx->cb_fn(ctx->subsystem, ctx->cb_arg, status);
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}
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free(ctx);
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}
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static void
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subsystem_state_change_continue(void *ctx, int status)
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{
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struct spdk_io_channel_iter *i = ctx;
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spdk_for_each_channel_continue(i, status);
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}
|
|
|
|
static void
|
|
subsystem_state_change_on_pg(struct spdk_io_channel_iter *i)
|
|
{
|
|
struct subsystem_state_change_ctx *ctx;
|
|
struct spdk_io_channel *ch;
|
|
struct spdk_nvmf_poll_group *group;
|
|
|
|
ctx = spdk_io_channel_iter_get_ctx(i);
|
|
ch = spdk_io_channel_iter_get_channel(i);
|
|
group = spdk_io_channel_get_ctx(ch);
|
|
|
|
switch (ctx->requested_state) {
|
|
case SPDK_NVMF_SUBSYSTEM_INACTIVE:
|
|
spdk_nvmf_poll_group_remove_subsystem(group, ctx->subsystem, subsystem_state_change_continue, i);
|
|
break;
|
|
case SPDK_NVMF_SUBSYSTEM_ACTIVE:
|
|
if (ctx->subsystem->state == SPDK_NVMF_SUBSYSTEM_ACTIVATING) {
|
|
spdk_nvmf_poll_group_add_subsystem(group, ctx->subsystem, subsystem_state_change_continue, i);
|
|
} else if (ctx->subsystem->state == SPDK_NVMF_SUBSYSTEM_RESUMING) {
|
|
spdk_nvmf_poll_group_resume_subsystem(group, ctx->subsystem, subsystem_state_change_continue, i);
|
|
}
|
|
break;
|
|
case SPDK_NVMF_SUBSYSTEM_PAUSED:
|
|
spdk_nvmf_poll_group_pause_subsystem(group, ctx->subsystem, subsystem_state_change_continue, i);
|
|
break;
|
|
default:
|
|
assert(false);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int
|
|
spdk_nvmf_subsystem_state_change(struct spdk_nvmf_subsystem *subsystem,
|
|
enum spdk_nvmf_subsystem_state requested_state,
|
|
spdk_nvmf_subsystem_state_change_done cb_fn,
|
|
void *cb_arg)
|
|
{
|
|
struct subsystem_state_change_ctx *ctx;
|
|
enum spdk_nvmf_subsystem_state intermediate_state;
|
|
int rc;
|
|
|
|
switch (requested_state) {
|
|
case SPDK_NVMF_SUBSYSTEM_INACTIVE:
|
|
intermediate_state = SPDK_NVMF_SUBSYSTEM_DEACTIVATING;
|
|
break;
|
|
case SPDK_NVMF_SUBSYSTEM_ACTIVE:
|
|
if (subsystem->state == SPDK_NVMF_SUBSYSTEM_PAUSED) {
|
|
intermediate_state = SPDK_NVMF_SUBSYSTEM_RESUMING;
|
|
} else {
|
|
intermediate_state = SPDK_NVMF_SUBSYSTEM_ACTIVATING;
|
|
}
|
|
break;
|
|
case SPDK_NVMF_SUBSYSTEM_PAUSED:
|
|
intermediate_state = SPDK_NVMF_SUBSYSTEM_PAUSING;
|
|
break;
|
|
default:
|
|
assert(false);
|
|
return -EINVAL;
|
|
}
|
|
|
|
ctx = calloc(1, sizeof(*ctx));
|
|
if (!ctx) {
|
|
return -ENOMEM;
|
|
}
|
|
|
|
rc = spdk_nvmf_subsystem_set_state(subsystem, intermediate_state);
|
|
if (rc) {
|
|
free(ctx);
|
|
return rc;
|
|
}
|
|
|
|
ctx->subsystem = subsystem;
|
|
ctx->requested_state = requested_state;
|
|
ctx->cb_fn = cb_fn;
|
|
ctx->cb_arg = cb_arg;
|
|
|
|
spdk_for_each_channel(subsystem->tgt,
|
|
subsystem_state_change_on_pg,
|
|
ctx,
|
|
subsystem_state_change_done);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
spdk_nvmf_subsystem_start(struct spdk_nvmf_subsystem *subsystem,
|
|
spdk_nvmf_subsystem_state_change_done cb_fn,
|
|
void *cb_arg)
|
|
{
|
|
return spdk_nvmf_subsystem_state_change(subsystem, SPDK_NVMF_SUBSYSTEM_ACTIVE, cb_fn, cb_arg);
|
|
}
|
|
|
|
int
|
|
spdk_nvmf_subsystem_stop(struct spdk_nvmf_subsystem *subsystem,
|
|
spdk_nvmf_subsystem_state_change_done cb_fn,
|
|
void *cb_arg)
|
|
{
|
|
return spdk_nvmf_subsystem_state_change(subsystem, SPDK_NVMF_SUBSYSTEM_INACTIVE, cb_fn, cb_arg);
|
|
}
|
|
|
|
int
|
|
spdk_nvmf_subsystem_pause(struct spdk_nvmf_subsystem *subsystem,
|
|
spdk_nvmf_subsystem_state_change_done cb_fn,
|
|
void *cb_arg)
|
|
{
|
|
return spdk_nvmf_subsystem_state_change(subsystem, SPDK_NVMF_SUBSYSTEM_PAUSED, cb_fn, cb_arg);
|
|
}
|
|
|
|
int
|
|
spdk_nvmf_subsystem_resume(struct spdk_nvmf_subsystem *subsystem,
|
|
spdk_nvmf_subsystem_state_change_done cb_fn,
|
|
void *cb_arg)
|
|
{
|
|
return spdk_nvmf_subsystem_state_change(subsystem, SPDK_NVMF_SUBSYSTEM_ACTIVE, cb_fn, cb_arg);
|
|
}
|
|
|
|
struct spdk_nvmf_subsystem *
|
|
spdk_nvmf_subsystem_get_first(struct spdk_nvmf_tgt *tgt)
|
|
{
|
|
struct spdk_nvmf_subsystem *subsystem;
|
|
uint32_t sid;
|
|
|
|
for (sid = 0; sid < tgt->max_subsystems; sid++) {
|
|
subsystem = tgt->subsystems[sid];
|
|
if (subsystem) {
|
|
return subsystem;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
struct spdk_nvmf_subsystem *
|
|
spdk_nvmf_subsystem_get_next(struct spdk_nvmf_subsystem *subsystem)
|
|
{
|
|
uint32_t sid;
|
|
struct spdk_nvmf_tgt *tgt;
|
|
|
|
if (!subsystem) {
|
|
return NULL;
|
|
}
|
|
|
|
tgt = subsystem->tgt;
|
|
|
|
for (sid = subsystem->id + 1; sid < tgt->max_subsystems; sid++) {
|
|
subsystem = tgt->subsystems[sid];
|
|
if (subsystem) {
|
|
return subsystem;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static struct spdk_nvmf_host *
|
|
_spdk_nvmf_subsystem_find_host(struct spdk_nvmf_subsystem *subsystem, const char *hostnqn)
|
|
{
|
|
struct spdk_nvmf_host *host = NULL;
|
|
|
|
TAILQ_FOREACH(host, &subsystem->hosts, link) {
|
|
if (strcmp(hostnqn, host->nqn) == 0) {
|
|
return host;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
int
|
|
spdk_nvmf_subsystem_add_host(struct spdk_nvmf_subsystem *subsystem, const char *hostnqn)
|
|
{
|
|
struct spdk_nvmf_host *host;
|
|
|
|
if (!spdk_nvmf_valid_nqn(hostnqn)) {
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (!(subsystem->state == SPDK_NVMF_SUBSYSTEM_INACTIVE ||
|
|
subsystem->state == SPDK_NVMF_SUBSYSTEM_PAUSED)) {
|
|
return -EAGAIN;
|
|
}
|
|
|
|
if (_spdk_nvmf_subsystem_find_host(subsystem, hostnqn)) {
|
|
/* This subsystem already allows the specified host. */
|
|
return 0;
|
|
}
|
|
|
|
host = calloc(1, sizeof(*host));
|
|
if (!host) {
|
|
return -ENOMEM;
|
|
}
|
|
host->nqn = strdup(hostnqn);
|
|
if (!host->nqn) {
|
|
free(host);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
TAILQ_INSERT_HEAD(&subsystem->hosts, host, link);
|
|
subsystem->tgt->discovery_genctr++;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
spdk_nvmf_subsystem_remove_host(struct spdk_nvmf_subsystem *subsystem, const char *hostnqn)
|
|
{
|
|
struct spdk_nvmf_host *host;
|
|
|
|
if (!(subsystem->state == SPDK_NVMF_SUBSYSTEM_INACTIVE ||
|
|
subsystem->state == SPDK_NVMF_SUBSYSTEM_PAUSED)) {
|
|
return -EAGAIN;
|
|
}
|
|
|
|
host = _spdk_nvmf_subsystem_find_host(subsystem, hostnqn);
|
|
if (host == NULL) {
|
|
return -ENOENT;
|
|
}
|
|
|
|
_spdk_nvmf_subsystem_remove_host(subsystem, host);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
spdk_nvmf_subsystem_set_allow_any_host(struct spdk_nvmf_subsystem *subsystem, bool allow_any_host)
|
|
{
|
|
if (!(subsystem->state == SPDK_NVMF_SUBSYSTEM_INACTIVE ||
|
|
subsystem->state == SPDK_NVMF_SUBSYSTEM_PAUSED)) {
|
|
return -EAGAIN;
|
|
}
|
|
|
|
subsystem->allow_any_host = allow_any_host;
|
|
|
|
return 0;
|
|
}
|
|
|
|
bool
|
|
spdk_nvmf_subsystem_get_allow_any_host(const struct spdk_nvmf_subsystem *subsystem)
|
|
{
|
|
return subsystem->allow_any_host;
|
|
}
|
|
|
|
bool
|
|
spdk_nvmf_subsystem_host_allowed(struct spdk_nvmf_subsystem *subsystem, const char *hostnqn)
|
|
{
|
|
if (!hostnqn) {
|
|
return false;
|
|
}
|
|
|
|
if (subsystem->allow_any_host) {
|
|
return true;
|
|
}
|
|
|
|
return _spdk_nvmf_subsystem_find_host(subsystem, hostnqn) != NULL;
|
|
}
|
|
|
|
struct spdk_nvmf_host *
|
|
spdk_nvmf_subsystem_get_first_host(struct spdk_nvmf_subsystem *subsystem)
|
|
{
|
|
return TAILQ_FIRST(&subsystem->hosts);
|
|
}
|
|
|
|
|
|
struct spdk_nvmf_host *
|
|
spdk_nvmf_subsystem_get_next_host(struct spdk_nvmf_subsystem *subsystem,
|
|
struct spdk_nvmf_host *prev_host)
|
|
{
|
|
return TAILQ_NEXT(prev_host, link);
|
|
}
|
|
|
|
const char *
|
|
spdk_nvmf_host_get_nqn(struct spdk_nvmf_host *host)
|
|
{
|
|
return host->nqn;
|
|
}
|
|
|
|
static struct spdk_nvmf_listener *
|
|
_spdk_nvmf_subsystem_find_listener(struct spdk_nvmf_subsystem *subsystem,
|
|
const struct spdk_nvme_transport_id *trid)
|
|
{
|
|
struct spdk_nvmf_listener *listener;
|
|
|
|
TAILQ_FOREACH(listener, &subsystem->listeners, link) {
|
|
if (spdk_nvme_transport_id_compare(&listener->trid, trid) == 0) {
|
|
return listener;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
int
|
|
spdk_nvmf_subsystem_add_listener(struct spdk_nvmf_subsystem *subsystem,
|
|
struct spdk_nvme_transport_id *trid)
|
|
{
|
|
struct spdk_nvmf_transport *transport;
|
|
struct spdk_nvmf_listener *listener;
|
|
|
|
if (!(subsystem->state == SPDK_NVMF_SUBSYSTEM_INACTIVE ||
|
|
subsystem->state == SPDK_NVMF_SUBSYSTEM_PAUSED)) {
|
|
return -EAGAIN;
|
|
}
|
|
|
|
if (_spdk_nvmf_subsystem_find_listener(subsystem, trid)) {
|
|
/* Listener already exists in this subsystem */
|
|
return 0;
|
|
}
|
|
|
|
transport = spdk_nvmf_tgt_get_transport(subsystem->tgt, trid->trtype);
|
|
if (transport == NULL) {
|
|
SPDK_ERRLOG("Unknown transport type %d\n", trid->trtype);
|
|
return -EINVAL;
|
|
}
|
|
|
|
listener = calloc(1, sizeof(*listener));
|
|
if (!listener) {
|
|
return -ENOMEM;
|
|
}
|
|
|
|
listener->trid = *trid;
|
|
listener->transport = transport;
|
|
|
|
TAILQ_INSERT_HEAD(&subsystem->listeners, listener, link);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
spdk_nvmf_subsystem_remove_listener(struct spdk_nvmf_subsystem *subsystem,
|
|
const struct spdk_nvme_transport_id *trid)
|
|
{
|
|
struct spdk_nvmf_listener *listener;
|
|
|
|
if (!(subsystem->state == SPDK_NVMF_SUBSYSTEM_INACTIVE ||
|
|
subsystem->state == SPDK_NVMF_SUBSYSTEM_PAUSED)) {
|
|
return -EAGAIN;
|
|
}
|
|
|
|
listener = _spdk_nvmf_subsystem_find_listener(subsystem, trid);
|
|
if (listener == NULL) {
|
|
return -ENOENT;
|
|
}
|
|
|
|
_nvmf_subsystem_remove_listener(subsystem, listener);
|
|
|
|
return 0;
|
|
}
|
|
|
|
bool
|
|
spdk_nvmf_subsystem_listener_allowed(struct spdk_nvmf_subsystem *subsystem,
|
|
struct spdk_nvme_transport_id *trid)
|
|
{
|
|
struct spdk_nvmf_listener *listener;
|
|
|
|
if (!strcmp(subsystem->subnqn, SPDK_NVMF_DISCOVERY_NQN)) {
|
|
return true;
|
|
}
|
|
|
|
TAILQ_FOREACH(listener, &subsystem->listeners, link) {
|
|
if (spdk_nvme_transport_id_compare(&listener->trid, trid) == 0) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
struct spdk_nvmf_listener *
|
|
spdk_nvmf_subsystem_get_first_listener(struct spdk_nvmf_subsystem *subsystem)
|
|
{
|
|
return TAILQ_FIRST(&subsystem->listeners);
|
|
}
|
|
|
|
struct spdk_nvmf_listener *
|
|
spdk_nvmf_subsystem_get_next_listener(struct spdk_nvmf_subsystem *subsystem,
|
|
struct spdk_nvmf_listener *prev_listener)
|
|
{
|
|
return TAILQ_NEXT(prev_listener, link);
|
|
}
|
|
|
|
const struct spdk_nvme_transport_id *
|
|
spdk_nvmf_listener_get_trid(struct spdk_nvmf_listener *listener)
|
|
{
|
|
return &listener->trid;
|
|
}
|
|
|
|
struct subsystem_update_ns_ctx {
|
|
struct spdk_nvmf_subsystem *subsystem;
|
|
|
|
spdk_nvmf_subsystem_state_change_done cb_fn;
|
|
void *cb_arg;
|
|
};
|
|
|
|
static void
|
|
subsystem_update_ns_done(struct spdk_io_channel_iter *i, int status)
|
|
{
|
|
struct subsystem_update_ns_ctx *ctx = spdk_io_channel_iter_get_ctx(i);
|
|
|
|
if (ctx->cb_fn) {
|
|
ctx->cb_fn(ctx->subsystem, ctx->cb_arg, status);
|
|
}
|
|
free(ctx);
|
|
}
|
|
|
|
static void
|
|
subsystem_update_ns_on_pg(struct spdk_io_channel_iter *i)
|
|
{
|
|
int rc;
|
|
struct subsystem_update_ns_ctx *ctx;
|
|
struct spdk_nvmf_poll_group *group;
|
|
struct spdk_nvmf_subsystem *subsystem;
|
|
|
|
ctx = spdk_io_channel_iter_get_ctx(i);
|
|
group = spdk_io_channel_get_ctx(spdk_io_channel_iter_get_channel(i));
|
|
subsystem = ctx->subsystem;
|
|
|
|
rc = spdk_nvmf_poll_group_update_subsystem(group, subsystem);
|
|
spdk_for_each_channel_continue(i, rc);
|
|
}
|
|
|
|
static int
|
|
spdk_nvmf_subsystem_update_ns(struct spdk_nvmf_subsystem *subsystem, spdk_channel_for_each_cpl cpl,
|
|
void *ctx)
|
|
{
|
|
spdk_for_each_channel(subsystem->tgt,
|
|
subsystem_update_ns_on_pg,
|
|
ctx,
|
|
cpl);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
spdk_nvmf_subsystem_ns_changed(struct spdk_nvmf_subsystem *subsystem, uint32_t nsid)
|
|
{
|
|
struct spdk_nvmf_ctrlr *ctrlr;
|
|
|
|
TAILQ_FOREACH(ctrlr, &subsystem->ctrlrs, link) {
|
|
spdk_nvmf_ctrlr_ns_changed(ctrlr, nsid);
|
|
}
|
|
}
|
|
|
|
static int
|
|
_spdk_nvmf_subsystem_remove_ns(struct spdk_nvmf_subsystem *subsystem, uint32_t nsid)
|
|
{
|
|
struct spdk_nvmf_ns *ns;
|
|
struct spdk_nvmf_registrant *reg, *reg_tmp;
|
|
|
|
assert(subsystem->state == SPDK_NVMF_SUBSYSTEM_PAUSED ||
|
|
subsystem->state == SPDK_NVMF_SUBSYSTEM_INACTIVE);
|
|
|
|
if (nsid == 0 || nsid > subsystem->max_nsid) {
|
|
return -1;
|
|
}
|
|
|
|
if (!(subsystem->state == SPDK_NVMF_SUBSYSTEM_INACTIVE ||
|
|
subsystem->state == SPDK_NVMF_SUBSYSTEM_PAUSED)) {
|
|
return -1;
|
|
}
|
|
|
|
ns = subsystem->ns[nsid - 1];
|
|
if (!ns) {
|
|
return -1;
|
|
}
|
|
|
|
subsystem->ns[nsid - 1] = NULL;
|
|
|
|
TAILQ_FOREACH_SAFE(reg, &ns->registrants, link, reg_tmp) {
|
|
TAILQ_REMOVE(&ns->registrants, reg, link);
|
|
free(reg);
|
|
}
|
|
spdk_bdev_module_release_bdev(ns->bdev);
|
|
spdk_bdev_close(ns->desc);
|
|
free(ns);
|
|
|
|
spdk_nvmf_subsystem_ns_changed(subsystem, nsid);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
spdk_nvmf_subsystem_remove_ns(struct spdk_nvmf_subsystem *subsystem, uint32_t nsid,
|
|
spdk_nvmf_subsystem_state_change_done cb_fn, void *cb_arg)
|
|
{
|
|
int rc;
|
|
struct subsystem_update_ns_ctx *ctx;
|
|
|
|
rc = _spdk_nvmf_subsystem_remove_ns(subsystem, nsid);
|
|
if (rc < 0) {
|
|
return rc;
|
|
}
|
|
|
|
ctx = calloc(1, sizeof(*ctx));
|
|
|
|
if (ctx == NULL) {
|
|
return -ENOMEM;
|
|
}
|
|
|
|
ctx->subsystem = subsystem;
|
|
ctx->cb_fn = cb_fn;
|
|
ctx->cb_arg = cb_arg;
|
|
|
|
spdk_nvmf_subsystem_update_ns(subsystem, subsystem_update_ns_done, ctx);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
_spdk_nvmf_ns_hot_remove_done(struct spdk_nvmf_subsystem *subsystem, void *cb_arg, int status)
|
|
{
|
|
if (status != 0) {
|
|
SPDK_ERRLOG("Failed to make changes to NVMe-oF subsystem with id %u\n", subsystem->id);
|
|
}
|
|
spdk_nvmf_subsystem_resume(subsystem, NULL, NULL);
|
|
}
|
|
|
|
static void
|
|
_spdk_nvmf_ns_hot_remove(struct spdk_nvmf_subsystem *subsystem,
|
|
void *cb_arg, int status)
|
|
{
|
|
struct spdk_nvmf_ns *ns = cb_arg;
|
|
|
|
spdk_nvmf_subsystem_remove_ns(subsystem, ns->opts.nsid, _spdk_nvmf_ns_hot_remove_done,
|
|
subsystem);
|
|
}
|
|
|
|
static void
|
|
spdk_nvmf_ns_hot_remove(void *remove_ctx)
|
|
{
|
|
struct spdk_nvmf_ns *ns = remove_ctx;
|
|
int rc;
|
|
|
|
rc = spdk_nvmf_subsystem_pause(ns->subsystem, _spdk_nvmf_ns_hot_remove, ns);
|
|
if (rc) {
|
|
SPDK_ERRLOG("Unable to pause subsystem to process namespace removal!\n");
|
|
}
|
|
}
|
|
|
|
void
|
|
spdk_nvmf_ns_opts_get_defaults(struct spdk_nvmf_ns_opts *opts, size_t opts_size)
|
|
{
|
|
/* All current fields are set to 0 by default. */
|
|
memset(opts, 0, opts_size);
|
|
}
|
|
|
|
/* Dummy bdev module used to to claim bdevs. */
|
|
static struct spdk_bdev_module ns_bdev_module = {
|
|
.name = "NVMe-oF Target",
|
|
};
|
|
|
|
uint32_t
|
|
spdk_nvmf_subsystem_add_ns(struct spdk_nvmf_subsystem *subsystem, struct spdk_bdev *bdev,
|
|
const struct spdk_nvmf_ns_opts *user_opts, size_t opts_size)
|
|
{
|
|
struct spdk_nvmf_ns_opts opts;
|
|
struct spdk_nvmf_ns *ns;
|
|
int rc;
|
|
|
|
if (!(subsystem->state == SPDK_NVMF_SUBSYSTEM_INACTIVE ||
|
|
subsystem->state == SPDK_NVMF_SUBSYSTEM_PAUSED)) {
|
|
return 0;
|
|
}
|
|
|
|
spdk_nvmf_ns_opts_get_defaults(&opts, sizeof(opts));
|
|
if (user_opts) {
|
|
memcpy(&opts, user_opts, spdk_min(sizeof(opts), opts_size));
|
|
}
|
|
|
|
if (spdk_mem_all_zero(&opts.uuid, sizeof(opts.uuid))) {
|
|
opts.uuid = *spdk_bdev_get_uuid(bdev);
|
|
}
|
|
|
|
if (opts.nsid == SPDK_NVME_GLOBAL_NS_TAG) {
|
|
SPDK_ERRLOG("Invalid NSID %" PRIu32 "\n", opts.nsid);
|
|
return 0;
|
|
}
|
|
|
|
if (opts.nsid == 0) {
|
|
/*
|
|
* NSID not specified - find a free index.
|
|
*
|
|
* If no free slots are found, opts.nsid will be subsystem->max_nsid + 1, which will
|
|
* expand max_nsid if possible.
|
|
*/
|
|
for (opts.nsid = 1; opts.nsid <= subsystem->max_nsid; opts.nsid++) {
|
|
if (_spdk_nvmf_subsystem_get_ns(subsystem, opts.nsid) == NULL) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (_spdk_nvmf_subsystem_get_ns(subsystem, opts.nsid)) {
|
|
SPDK_ERRLOG("Requested NSID %" PRIu32 " already in use\n", opts.nsid);
|
|
return 0;
|
|
}
|
|
|
|
if (opts.nsid > subsystem->max_nsid) {
|
|
struct spdk_nvmf_ns **new_ns_array;
|
|
|
|
/* If MaxNamespaces was specified, we can't extend max_nsid beyond it. */
|
|
if (subsystem->max_allowed_nsid > 0 && opts.nsid > subsystem->max_allowed_nsid) {
|
|
SPDK_ERRLOG("Can't extend NSID range above MaxNamespaces\n");
|
|
return 0;
|
|
}
|
|
|
|
/* If a controller is connected, we can't change NN. */
|
|
if (!TAILQ_EMPTY(&subsystem->ctrlrs)) {
|
|
SPDK_ERRLOG("Can't extend NSID range while controllers are connected\n");
|
|
return 0;
|
|
}
|
|
|
|
new_ns_array = realloc(subsystem->ns, sizeof(struct spdk_nvmf_ns *) * opts.nsid);
|
|
if (new_ns_array == NULL) {
|
|
SPDK_ERRLOG("Memory allocation error while resizing namespace array.\n");
|
|
return 0;
|
|
}
|
|
|
|
memset(new_ns_array + subsystem->max_nsid, 0,
|
|
sizeof(struct spdk_nvmf_ns *) * (opts.nsid - subsystem->max_nsid));
|
|
subsystem->ns = new_ns_array;
|
|
subsystem->max_nsid = opts.nsid;
|
|
}
|
|
|
|
ns = calloc(1, sizeof(*ns));
|
|
if (ns == NULL) {
|
|
SPDK_ERRLOG("Namespace allocation failed\n");
|
|
return 0;
|
|
}
|
|
|
|
ns->bdev = bdev;
|
|
ns->opts = opts;
|
|
ns->subsystem = subsystem;
|
|
rc = spdk_bdev_open(bdev, true, spdk_nvmf_ns_hot_remove, ns, &ns->desc);
|
|
if (rc != 0) {
|
|
SPDK_ERRLOG("Subsystem %s: bdev %s cannot be opened, error=%d\n",
|
|
subsystem->subnqn, spdk_bdev_get_name(bdev), rc);
|
|
free(ns);
|
|
return 0;
|
|
}
|
|
rc = spdk_bdev_module_claim_bdev(bdev, ns->desc, &ns_bdev_module);
|
|
if (rc != 0) {
|
|
spdk_bdev_close(ns->desc);
|
|
free(ns);
|
|
return 0;
|
|
}
|
|
subsystem->ns[opts.nsid - 1] = ns;
|
|
ns->nsid = opts.nsid;
|
|
TAILQ_INIT(&ns->registrants);
|
|
|
|
SPDK_DEBUGLOG(SPDK_LOG_NVMF, "Subsystem %s: bdev %s assigned nsid %" PRIu32 "\n",
|
|
spdk_nvmf_subsystem_get_nqn(subsystem),
|
|
spdk_bdev_get_name(bdev),
|
|
opts.nsid);
|
|
|
|
spdk_nvmf_subsystem_ns_changed(subsystem, opts.nsid);
|
|
|
|
return opts.nsid;
|
|
}
|
|
|
|
static uint32_t
|
|
spdk_nvmf_subsystem_get_next_allocated_nsid(struct spdk_nvmf_subsystem *subsystem,
|
|
uint32_t prev_nsid)
|
|
{
|
|
uint32_t nsid;
|
|
|
|
if (prev_nsid >= subsystem->max_nsid) {
|
|
return 0;
|
|
}
|
|
|
|
for (nsid = prev_nsid + 1; nsid <= subsystem->max_nsid; nsid++) {
|
|
if (subsystem->ns[nsid - 1]) {
|
|
return nsid;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct spdk_nvmf_ns *
|
|
spdk_nvmf_subsystem_get_first_ns(struct spdk_nvmf_subsystem *subsystem)
|
|
{
|
|
uint32_t first_nsid;
|
|
|
|
first_nsid = spdk_nvmf_subsystem_get_next_allocated_nsid(subsystem, 0);
|
|
return _spdk_nvmf_subsystem_get_ns(subsystem, first_nsid);
|
|
}
|
|
|
|
struct spdk_nvmf_ns *
|
|
spdk_nvmf_subsystem_get_next_ns(struct spdk_nvmf_subsystem *subsystem,
|
|
struct spdk_nvmf_ns *prev_ns)
|
|
{
|
|
uint32_t next_nsid;
|
|
|
|
next_nsid = spdk_nvmf_subsystem_get_next_allocated_nsid(subsystem, prev_ns->opts.nsid);
|
|
return _spdk_nvmf_subsystem_get_ns(subsystem, next_nsid);
|
|
}
|
|
|
|
struct spdk_nvmf_ns *
|
|
spdk_nvmf_subsystem_get_ns(struct spdk_nvmf_subsystem *subsystem, uint32_t nsid)
|
|
{
|
|
return _spdk_nvmf_subsystem_get_ns(subsystem, nsid);
|
|
}
|
|
|
|
uint32_t
|
|
spdk_nvmf_ns_get_id(const struct spdk_nvmf_ns *ns)
|
|
{
|
|
return ns->opts.nsid;
|
|
}
|
|
|
|
struct spdk_bdev *
|
|
spdk_nvmf_ns_get_bdev(struct spdk_nvmf_ns *ns)
|
|
{
|
|
return ns->bdev;
|
|
}
|
|
|
|
void
|
|
spdk_nvmf_ns_get_opts(const struct spdk_nvmf_ns *ns, struct spdk_nvmf_ns_opts *opts,
|
|
size_t opts_size)
|
|
{
|
|
memset(opts, 0, opts_size);
|
|
memcpy(opts, &ns->opts, spdk_min(sizeof(ns->opts), opts_size));
|
|
}
|
|
|
|
const char *
|
|
spdk_nvmf_subsystem_get_sn(const struct spdk_nvmf_subsystem *subsystem)
|
|
{
|
|
return subsystem->sn;
|
|
}
|
|
|
|
int
|
|
spdk_nvmf_subsystem_set_sn(struct spdk_nvmf_subsystem *subsystem, const char *sn)
|
|
{
|
|
size_t len, max_len;
|
|
|
|
max_len = sizeof(subsystem->sn) - 1;
|
|
len = strlen(sn);
|
|
if (len > max_len) {
|
|
SPDK_DEBUGLOG(SPDK_LOG_NVMF, "Invalid sn \"%s\": length %zu > max %zu\n",
|
|
sn, len, max_len);
|
|
return -1;
|
|
}
|
|
|
|
if (!spdk_nvmf_valid_ascii_string(sn, len)) {
|
|
SPDK_DEBUGLOG(SPDK_LOG_NVMF, "Non-ASCII sn\n");
|
|
SPDK_LOGDUMP(SPDK_LOG_NVMF, "sn", sn, len);
|
|
return -1;
|
|
}
|
|
|
|
snprintf(subsystem->sn, sizeof(subsystem->sn), "%s", sn);
|
|
|
|
return 0;
|
|
}
|
|
|
|
const char *
|
|
spdk_nvmf_subsystem_get_nqn(struct spdk_nvmf_subsystem *subsystem)
|
|
{
|
|
return subsystem->subnqn;
|
|
}
|
|
|
|
/* Workaround for astyle formatting bug */
|
|
typedef enum spdk_nvmf_subtype nvmf_subtype_t;
|
|
|
|
nvmf_subtype_t
|
|
spdk_nvmf_subsystem_get_type(struct spdk_nvmf_subsystem *subsystem)
|
|
{
|
|
return subsystem->subtype;
|
|
}
|
|
|
|
static uint16_t
|
|
spdk_nvmf_subsystem_gen_cntlid(struct spdk_nvmf_subsystem *subsystem)
|
|
{
|
|
int count;
|
|
|
|
/*
|
|
* In the worst case, we might have to try all CNTLID values between 1 and 0xFFF0 - 1
|
|
* before we find one that is unused (or find that all values are in use).
|
|
*/
|
|
for (count = 0; count < 0xFFF0 - 1; count++) {
|
|
subsystem->next_cntlid++;
|
|
if (subsystem->next_cntlid >= 0xFFF0) {
|
|
/* The spec reserves cntlid values in the range FFF0h to FFFFh. */
|
|
subsystem->next_cntlid = 1;
|
|
}
|
|
|
|
/* Check if a controller with this cntlid currently exists. */
|
|
if (spdk_nvmf_subsystem_get_ctrlr(subsystem, subsystem->next_cntlid) == NULL) {
|
|
/* Found unused cntlid */
|
|
return subsystem->next_cntlid;
|
|
}
|
|
}
|
|
|
|
/* All valid cntlid values are in use. */
|
|
return 0xFFFF;
|
|
}
|
|
|
|
int
|
|
spdk_nvmf_subsystem_add_ctrlr(struct spdk_nvmf_subsystem *subsystem, struct spdk_nvmf_ctrlr *ctrlr)
|
|
{
|
|
ctrlr->cntlid = spdk_nvmf_subsystem_gen_cntlid(subsystem);
|
|
if (ctrlr->cntlid == 0xFFFF) {
|
|
/* Unable to get a cntlid */
|
|
SPDK_ERRLOG("Reached max simultaneous ctrlrs\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
TAILQ_INSERT_TAIL(&subsystem->ctrlrs, ctrlr, link);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
spdk_nvmf_subsystem_remove_ctrlr(struct spdk_nvmf_subsystem *subsystem,
|
|
struct spdk_nvmf_ctrlr *ctrlr)
|
|
{
|
|
assert(subsystem == ctrlr->subsys);
|
|
TAILQ_REMOVE(&subsystem->ctrlrs, ctrlr, link);
|
|
}
|
|
|
|
struct spdk_nvmf_ctrlr *
|
|
spdk_nvmf_subsystem_get_ctrlr(struct spdk_nvmf_subsystem *subsystem, uint16_t cntlid)
|
|
{
|
|
struct spdk_nvmf_ctrlr *ctrlr;
|
|
|
|
TAILQ_FOREACH(ctrlr, &subsystem->ctrlrs, link) {
|
|
if (ctrlr->cntlid == cntlid) {
|
|
return ctrlr;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
uint32_t
|
|
spdk_nvmf_subsystem_get_max_namespaces(const struct spdk_nvmf_subsystem *subsystem)
|
|
{
|
|
return subsystem->max_allowed_nsid;
|
|
}
|
|
|
|
static struct spdk_nvmf_registrant *
|
|
nvmf_ns_reservation_get_registrant(struct spdk_nvmf_ns *ns,
|
|
struct spdk_uuid *uuid)
|
|
{
|
|
struct spdk_nvmf_registrant *reg, *tmp;
|
|
|
|
TAILQ_FOREACH_SAFE(reg, &ns->registrants, link, tmp) {
|
|
if (spdk_uuid_compare(®->hostid, uuid) == 0) {
|
|
return reg;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* Generate reservation notice log to registered HostID controllers */
|
|
static void
|
|
nvmf_subsystem_gen_ctrlr_notification(struct spdk_nvmf_subsystem *subsystem,
|
|
struct spdk_nvmf_ns *ns,
|
|
struct spdk_uuid *hostid_list,
|
|
uint32_t num_hostid,
|
|
enum spdk_nvme_reservation_notification_log_page_type type)
|
|
{
|
|
struct spdk_nvmf_ctrlr *ctrlr;
|
|
uint32_t i;
|
|
|
|
for (i = 0; i < num_hostid; i++) {
|
|
TAILQ_FOREACH(ctrlr, &subsystem->ctrlrs, link) {
|
|
if (!spdk_uuid_compare(&ctrlr->hostid, &hostid_list[i])) {
|
|
spdk_nvmf_ctrlr_reservation_notice_log(ctrlr, ns, type);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Get all registrants' hostid other than the controller who issued the command */
|
|
static uint32_t
|
|
nvmf_ns_reservation_get_all_other_hostid(struct spdk_nvmf_ns *ns,
|
|
struct spdk_uuid *hostid_list,
|
|
uint32_t max_num_hostid,
|
|
struct spdk_uuid *current_hostid)
|
|
{
|
|
struct spdk_nvmf_registrant *reg, *tmp;
|
|
uint32_t num_hostid = 0;
|
|
|
|
TAILQ_FOREACH_SAFE(reg, &ns->registrants, link, tmp) {
|
|
if (spdk_uuid_compare(®->hostid, current_hostid)) {
|
|
if (num_hostid == max_num_hostid) {
|
|
assert(false);
|
|
return max_num_hostid;
|
|
}
|
|
hostid_list[num_hostid++] = reg->hostid;
|
|
}
|
|
}
|
|
|
|
return num_hostid;
|
|
}
|
|
|
|
/* Calculate the unregistered HostID list according to list
|
|
* prior to execute preempt command and list after executing
|
|
* preempt command.
|
|
*/
|
|
static uint32_t
|
|
nvmf_ns_reservation_get_unregistered_hostid(struct spdk_uuid *old_hostid_list,
|
|
uint32_t old_num_hostid,
|
|
struct spdk_uuid *remaining_hostid_list,
|
|
uint32_t remaining_num_hostid)
|
|
{
|
|
struct spdk_uuid temp_hostid_list[SPDK_NVMF_MAX_NUM_REGISTRANTS];
|
|
uint32_t i, j, num_hostid = 0;
|
|
bool found;
|
|
|
|
if (!remaining_num_hostid) {
|
|
return old_num_hostid;
|
|
}
|
|
|
|
for (i = 0; i < old_num_hostid; i++) {
|
|
found = false;
|
|
for (j = 0; j < remaining_num_hostid; j++) {
|
|
if (!spdk_uuid_compare(&old_hostid_list[i], &remaining_hostid_list[j])) {
|
|
found = true;
|
|
break;
|
|
}
|
|
}
|
|
if (!found) {
|
|
spdk_uuid_copy(&temp_hostid_list[num_hostid++], &old_hostid_list[i]);
|
|
}
|
|
}
|
|
|
|
if (num_hostid) {
|
|
memcpy(old_hostid_list, temp_hostid_list, sizeof(struct spdk_uuid) * num_hostid);
|
|
}
|
|
|
|
return num_hostid;
|
|
}
|
|
|
|
/* current reservation type is all registrants or not */
|
|
static bool
|
|
nvmf_ns_reservation_all_registrants_type(struct spdk_nvmf_ns *ns)
|
|
{
|
|
return (ns->rtype == SPDK_NVME_RESERVE_WRITE_EXCLUSIVE_ALL_REGS ||
|
|
ns->rtype == SPDK_NVME_RESERVE_EXCLUSIVE_ACCESS_ALL_REGS);
|
|
}
|
|
|
|
/* current registrant is reservation holder or not */
|
|
static bool
|
|
nvmf_ns_reservation_registrant_is_holder(struct spdk_nvmf_ns *ns,
|
|
struct spdk_nvmf_registrant *reg)
|
|
{
|
|
if (!reg) {
|
|
return false;
|
|
}
|
|
|
|
if (nvmf_ns_reservation_all_registrants_type(ns)) {
|
|
return true;
|
|
}
|
|
|
|
return (ns->holder == reg);
|
|
}
|
|
|
|
static int
|
|
nvmf_ns_reservation_add_registrant(struct spdk_nvmf_ns *ns,
|
|
struct spdk_nvmf_ctrlr *ctrlr,
|
|
uint64_t nrkey)
|
|
{
|
|
struct spdk_nvmf_registrant *reg;
|
|
|
|
reg = calloc(1, sizeof(*reg));
|
|
if (!reg) {
|
|
return -ENOMEM;
|
|
}
|
|
|
|
reg->rkey = nrkey;
|
|
/* set hostid for the registrant */
|
|
spdk_uuid_copy(®->hostid, &ctrlr->hostid);
|
|
TAILQ_INSERT_TAIL(&ns->registrants, reg, link);
|
|
ns->gen++;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
nvmf_ns_reservation_release_reservation(struct spdk_nvmf_ns *ns)
|
|
{
|
|
ns->rtype = 0;
|
|
ns->crkey = 0;
|
|
ns->holder = NULL;
|
|
}
|
|
|
|
/* release the reservation if the last registrant was removed */
|
|
static void
|
|
nvmf_ns_reservation_check_release_on_remove_registrant(struct spdk_nvmf_ns *ns,
|
|
struct spdk_nvmf_registrant *reg)
|
|
{
|
|
struct spdk_nvmf_registrant *next_reg;
|
|
|
|
/* no reservation holder */
|
|
if (!ns->holder) {
|
|
assert(ns->rtype == 0);
|
|
return;
|
|
}
|
|
|
|
next_reg = TAILQ_FIRST(&ns->registrants);
|
|
if (next_reg && nvmf_ns_reservation_all_registrants_type(ns)) {
|
|
/* the next valid registrant is the new holder now */
|
|
ns->holder = next_reg;
|
|
} else if (nvmf_ns_reservation_registrant_is_holder(ns, reg)) {
|
|
/* release the reservation */
|
|
nvmf_ns_reservation_release_reservation(ns);
|
|
}
|
|
}
|
|
|
|
static void
|
|
nvmf_ns_reservation_remove_registrant(struct spdk_nvmf_ns *ns,
|
|
struct spdk_nvmf_registrant *reg)
|
|
{
|
|
TAILQ_REMOVE(&ns->registrants, reg, link);
|
|
nvmf_ns_reservation_check_release_on_remove_registrant(ns, reg);
|
|
free(reg);
|
|
ns->gen++;
|
|
return;
|
|
}
|
|
|
|
static uint32_t
|
|
nvmf_ns_reservation_remove_registrants_by_key(struct spdk_nvmf_ns *ns,
|
|
uint64_t rkey)
|
|
{
|
|
struct spdk_nvmf_registrant *reg, *tmp;
|
|
uint32_t count = 0;
|
|
|
|
TAILQ_FOREACH_SAFE(reg, &ns->registrants, link, tmp) {
|
|
if (reg->rkey == rkey) {
|
|
nvmf_ns_reservation_remove_registrant(ns, reg);
|
|
count++;
|
|
}
|
|
}
|
|
return count;
|
|
}
|
|
|
|
static uint32_t
|
|
nvmf_ns_reservation_remove_all_other_registrants(struct spdk_nvmf_ns *ns,
|
|
struct spdk_nvmf_registrant *reg)
|
|
{
|
|
struct spdk_nvmf_registrant *reg_tmp, *reg_tmp2;
|
|
uint32_t count = 0;
|
|
|
|
TAILQ_FOREACH_SAFE(reg_tmp, &ns->registrants, link, reg_tmp2) {
|
|
if (reg_tmp != reg) {
|
|
nvmf_ns_reservation_remove_registrant(ns, reg_tmp);
|
|
count++;
|
|
}
|
|
}
|
|
return count;
|
|
}
|
|
|
|
static uint32_t
|
|
nvmf_ns_reservation_clear_all_registrants(struct spdk_nvmf_ns *ns)
|
|
{
|
|
struct spdk_nvmf_registrant *reg, *reg_tmp;
|
|
uint32_t count = 0;
|
|
|
|
TAILQ_FOREACH_SAFE(reg, &ns->registrants, link, reg_tmp) {
|
|
nvmf_ns_reservation_remove_registrant(ns, reg);
|
|
count++;
|
|
}
|
|
return count;
|
|
}
|
|
|
|
static void
|
|
nvmf_ns_reservation_acquire_reservation(struct spdk_nvmf_ns *ns, uint64_t rkey,
|
|
enum spdk_nvme_reservation_type rtype,
|
|
struct spdk_nvmf_registrant *holder)
|
|
{
|
|
ns->rtype = rtype;
|
|
ns->crkey = rkey;
|
|
assert(ns->holder == NULL);
|
|
ns->holder = holder;
|
|
}
|
|
|
|
static bool
|
|
nvmf_ns_reservation_register(struct spdk_nvmf_ns *ns,
|
|
struct spdk_nvmf_ctrlr *ctrlr,
|
|
struct spdk_nvmf_request *req)
|
|
{
|
|
struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd;
|
|
uint8_t rrega, iekey, cptpl, rtype;
|
|
struct spdk_nvme_reservation_register_data key;
|
|
struct spdk_nvmf_registrant *reg;
|
|
uint8_t status = SPDK_NVME_SC_SUCCESS;
|
|
bool update_sgroup = false;
|
|
struct spdk_uuid hostid_list[SPDK_NVMF_MAX_NUM_REGISTRANTS];
|
|
uint32_t num_hostid = 0;
|
|
int rc;
|
|
|
|
rrega = cmd->cdw10 & 0x7u;
|
|
iekey = (cmd->cdw10 >> 3) & 0x1u;
|
|
cptpl = (cmd->cdw10 >> 30) & 0x3u;
|
|
memcpy(&key, req->data, sizeof(key));
|
|
|
|
SPDK_DEBUGLOG(SPDK_LOG_NVMF, "REGISTER: RREGA %u, IEKEY %u, CPTPL %u, "
|
|
"NRKEY 0x%"PRIx64", NRKEY 0x%"PRIx64"\n",
|
|
rrega, iekey, cptpl, key.crkey, key.nrkey);
|
|
|
|
/* TODO: doesn't support for now */
|
|
if (cptpl == SPDK_NVME_RESERVE_PTPL_PERSIST_POWER_LOSS) {
|
|
SPDK_ERRLOG("Can't change persist through power loss for now\n");
|
|
status = SPDK_NVME_SC_INVALID_FIELD;
|
|
goto exit;
|
|
}
|
|
|
|
/* current Host Identifier has registrant or not */
|
|
reg = nvmf_ns_reservation_get_registrant(ns, &ctrlr->hostid);
|
|
|
|
switch (rrega) {
|
|
case SPDK_NVME_RESERVE_REGISTER_KEY:
|
|
if (!reg) {
|
|
/* register new controller */
|
|
if (key.nrkey == 0) {
|
|
SPDK_ERRLOG("Can't register zeroed new key\n");
|
|
status = SPDK_NVME_SC_INVALID_FIELD;
|
|
goto exit;
|
|
}
|
|
rc = nvmf_ns_reservation_add_registrant(ns, ctrlr, key.nrkey);
|
|
if (rc < 0) {
|
|
status = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR;
|
|
goto exit;
|
|
}
|
|
update_sgroup = true;
|
|
} else {
|
|
/* register with same key is not an error */
|
|
if (reg->rkey != key.nrkey) {
|
|
SPDK_ERRLOG("The same host already register a "
|
|
"key with 0x%"PRIx64"\n",
|
|
reg->rkey);
|
|
status = SPDK_NVME_SC_RESERVATION_CONFLICT;
|
|
goto exit;
|
|
}
|
|
}
|
|
break;
|
|
case SPDK_NVME_RESERVE_UNREGISTER_KEY:
|
|
if (!reg || (!iekey && reg->rkey != key.crkey)) {
|
|
SPDK_ERRLOG("No registrant or current key doesn't match "
|
|
"with existing registrant key\n");
|
|
status = SPDK_NVME_SC_RESERVATION_CONFLICT;
|
|
goto exit;
|
|
}
|
|
|
|
rtype = ns->rtype;
|
|
num_hostid = nvmf_ns_reservation_get_all_other_hostid(ns, hostid_list,
|
|
SPDK_NVMF_MAX_NUM_REGISTRANTS,
|
|
&ctrlr->hostid);
|
|
|
|
nvmf_ns_reservation_remove_registrant(ns, reg);
|
|
|
|
if (!ns->rtype && num_hostid && (rtype == SPDK_NVME_RESERVE_WRITE_EXCLUSIVE_REG_ONLY ||
|
|
rtype == SPDK_NVME_RESERVE_EXCLUSIVE_ACCESS_REG_ONLY)) {
|
|
nvmf_subsystem_gen_ctrlr_notification(ns->subsystem, ns,
|
|
hostid_list,
|
|
num_hostid,
|
|
SPDK_NVME_RESERVATION_RELEASED);
|
|
}
|
|
update_sgroup = true;
|
|
break;
|
|
case SPDK_NVME_RESERVE_REPLACE_KEY:
|
|
if (!reg || (!iekey && reg->rkey != key.crkey)) {
|
|
SPDK_ERRLOG("No registrant or current key doesn't match "
|
|
"with existing registrant key\n");
|
|
status = SPDK_NVME_SC_RESERVATION_CONFLICT;
|
|
goto exit;
|
|
}
|
|
if (key.nrkey == 0) {
|
|
SPDK_ERRLOG("Can't register zeroed new key\n");
|
|
status = SPDK_NVME_SC_INVALID_FIELD;
|
|
goto exit;
|
|
}
|
|
reg->rkey = key.nrkey;
|
|
update_sgroup = true;
|
|
break;
|
|
default:
|
|
status = SPDK_NVME_SC_INVALID_FIELD;
|
|
goto exit;
|
|
}
|
|
|
|
exit:
|
|
req->rsp->nvme_cpl.status.sct = SPDK_NVME_SCT_GENERIC;
|
|
req->rsp->nvme_cpl.status.sc = status;
|
|
return update_sgroup;
|
|
}
|
|
|
|
static bool
|
|
nvmf_ns_reservation_acquire(struct spdk_nvmf_ns *ns,
|
|
struct spdk_nvmf_ctrlr *ctrlr,
|
|
struct spdk_nvmf_request *req)
|
|
{
|
|
struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd;
|
|
uint8_t racqa, iekey, rtype;
|
|
struct spdk_nvme_reservation_acquire_data key;
|
|
struct spdk_nvmf_registrant *reg;
|
|
bool all_regs = false;
|
|
uint32_t count = 0;
|
|
bool update_sgroup = true;
|
|
struct spdk_uuid hostid_list[SPDK_NVMF_MAX_NUM_REGISTRANTS];
|
|
uint32_t num_hostid = 0;
|
|
struct spdk_uuid new_hostid_list[SPDK_NVMF_MAX_NUM_REGISTRANTS];
|
|
uint32_t new_num_hostid = 0;
|
|
bool reservation_released = false;
|
|
uint8_t status = SPDK_NVME_SC_SUCCESS;
|
|
|
|
racqa = cmd->cdw10 & 0x7u;
|
|
iekey = (cmd->cdw10 >> 3) & 0x1u;
|
|
rtype = (cmd->cdw10 >> 8) & 0xffu;
|
|
memcpy(&key, req->data, sizeof(key));
|
|
|
|
SPDK_DEBUGLOG(SPDK_LOG_NVMF, "ACQUIRE: RACQA %u, IEKEY %u, RTYPE %u, "
|
|
"NRKEY 0x%"PRIx64", PRKEY 0x%"PRIx64"\n",
|
|
racqa, iekey, rtype, key.crkey, key.prkey);
|
|
|
|
if (iekey || rtype > SPDK_NVME_RESERVE_EXCLUSIVE_ACCESS_ALL_REGS) {
|
|
SPDK_ERRLOG("Ignore existing key field set to 1\n");
|
|
status = SPDK_NVME_SC_INVALID_FIELD;
|
|
update_sgroup = false;
|
|
goto exit;
|
|
}
|
|
|
|
reg = nvmf_ns_reservation_get_registrant(ns, &ctrlr->hostid);
|
|
/* must be registrant and CRKEY must match */
|
|
if (!reg || reg->rkey != key.crkey) {
|
|
SPDK_ERRLOG("No registrant or current key doesn't match "
|
|
"with existing registrant key\n");
|
|
status = SPDK_NVME_SC_RESERVATION_CONFLICT;
|
|
update_sgroup = false;
|
|
goto exit;
|
|
}
|
|
|
|
all_regs = nvmf_ns_reservation_all_registrants_type(ns);
|
|
|
|
switch (racqa) {
|
|
case SPDK_NVME_RESERVE_ACQUIRE:
|
|
/* it's not an error for the holder to acquire same reservation type again */
|
|
if (nvmf_ns_reservation_registrant_is_holder(ns, reg) && ns->rtype == rtype) {
|
|
/* do nothing */
|
|
update_sgroup = false;
|
|
} else if (ns->holder == NULL) {
|
|
/* fisrt time to acquire the reservation */
|
|
nvmf_ns_reservation_acquire_reservation(ns, key.crkey, rtype, reg);
|
|
} else {
|
|
SPDK_ERRLOG("Invalid rtype or current registrant is not holder\n");
|
|
status = SPDK_NVME_SC_RESERVATION_CONFLICT;
|
|
update_sgroup = false;
|
|
goto exit;
|
|
}
|
|
break;
|
|
case SPDK_NVME_RESERVE_PREEMPT:
|
|
/* no reservation holder */
|
|
if (!ns->holder) {
|
|
/* unregister with PRKEY */
|
|
nvmf_ns_reservation_remove_registrants_by_key(ns, key.prkey);
|
|
break;
|
|
}
|
|
num_hostid = nvmf_ns_reservation_get_all_other_hostid(ns, hostid_list,
|
|
SPDK_NVMF_MAX_NUM_REGISTRANTS,
|
|
&ctrlr->hostid);
|
|
|
|
/* only 1 reservation holder and reservation key is valid */
|
|
if (!all_regs) {
|
|
/* preempt itself */
|
|
if (nvmf_ns_reservation_registrant_is_holder(ns, reg) &&
|
|
ns->crkey == key.prkey) {
|
|
ns->rtype = rtype;
|
|
reservation_released = true;
|
|
break;
|
|
}
|
|
|
|
if (ns->crkey == key.prkey) {
|
|
nvmf_ns_reservation_remove_registrant(ns, ns->holder);
|
|
nvmf_ns_reservation_acquire_reservation(ns, key.crkey, rtype, reg);
|
|
reservation_released = true;
|
|
} else if (key.prkey != 0) {
|
|
nvmf_ns_reservation_remove_registrants_by_key(ns, key.prkey);
|
|
} else {
|
|
/* PRKEY is zero */
|
|
SPDK_ERRLOG("Current PRKEY is zero\n");
|
|
status = SPDK_NVME_SC_RESERVATION_CONFLICT;
|
|
update_sgroup = false;
|
|
goto exit;
|
|
}
|
|
} else {
|
|
/* release all other registrants except for the current one */
|
|
if (key.prkey == 0) {
|
|
nvmf_ns_reservation_remove_all_other_registrants(ns, reg);
|
|
assert(ns->holder == reg);
|
|
} else {
|
|
count = nvmf_ns_reservation_remove_registrants_by_key(ns, key.prkey);
|
|
if (count == 0) {
|
|
SPDK_ERRLOG("PRKEY doesn't match any registrant\n");
|
|
status = SPDK_NVME_SC_RESERVATION_CONFLICT;
|
|
update_sgroup = false;
|
|
goto exit;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
status = SPDK_NVME_SC_INVALID_FIELD;
|
|
update_sgroup = false;
|
|
break;
|
|
}
|
|
|
|
exit:
|
|
if (update_sgroup && racqa == SPDK_NVME_RESERVE_PREEMPT) {
|
|
new_num_hostid = nvmf_ns_reservation_get_all_other_hostid(ns, new_hostid_list,
|
|
SPDK_NVMF_MAX_NUM_REGISTRANTS,
|
|
&ctrlr->hostid);
|
|
/* Preempt notification occurs on the unregistered controllers
|
|
* other than the controller who issued the command.
|
|
*/
|
|
num_hostid = nvmf_ns_reservation_get_unregistered_hostid(hostid_list,
|
|
num_hostid,
|
|
new_hostid_list,
|
|
new_num_hostid);
|
|
if (num_hostid) {
|
|
nvmf_subsystem_gen_ctrlr_notification(ns->subsystem, ns,
|
|
hostid_list,
|
|
num_hostid,
|
|
SPDK_NVME_REGISTRATION_PREEMPTED);
|
|
|
|
}
|
|
/* Reservation released notification occurs on the
|
|
* controllers which are the remaining registrants other than
|
|
* the controller who issued the command.
|
|
*/
|
|
if (reservation_released && new_num_hostid) {
|
|
nvmf_subsystem_gen_ctrlr_notification(ns->subsystem, ns,
|
|
new_hostid_list,
|
|
new_num_hostid,
|
|
SPDK_NVME_RESERVATION_RELEASED);
|
|
|
|
}
|
|
}
|
|
req->rsp->nvme_cpl.status.sct = SPDK_NVME_SCT_GENERIC;
|
|
req->rsp->nvme_cpl.status.sc = status;
|
|
return update_sgroup;
|
|
}
|
|
|
|
static bool
|
|
nvmf_ns_reservation_release(struct spdk_nvmf_ns *ns,
|
|
struct spdk_nvmf_ctrlr *ctrlr,
|
|
struct spdk_nvmf_request *req)
|
|
{
|
|
struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd;
|
|
uint8_t rrela, iekey, rtype;
|
|
struct spdk_nvmf_registrant *reg;
|
|
uint64_t crkey;
|
|
uint8_t status = SPDK_NVME_SC_SUCCESS;
|
|
bool update_sgroup = true;
|
|
struct spdk_uuid hostid_list[SPDK_NVMF_MAX_NUM_REGISTRANTS];
|
|
uint32_t num_hostid = 0;
|
|
|
|
rrela = cmd->cdw10 & 0x7u;
|
|
iekey = (cmd->cdw10 >> 3) & 0x1u;
|
|
rtype = (cmd->cdw10 >> 8) & 0xffu;
|
|
memcpy(&crkey, req->data, sizeof(crkey));
|
|
|
|
SPDK_DEBUGLOG(SPDK_LOG_NVMF, "RELEASE: RRELA %u, IEKEY %u, RTYPE %u, "
|
|
"CRKEY 0x%"PRIx64"\n", rrela, iekey, rtype, crkey);
|
|
|
|
if (iekey) {
|
|
SPDK_ERRLOG("Ignore existing key field set to 1\n");
|
|
status = SPDK_NVME_SC_INVALID_FIELD;
|
|
update_sgroup = false;
|
|
goto exit;
|
|
}
|
|
|
|
reg = nvmf_ns_reservation_get_registrant(ns, &ctrlr->hostid);
|
|
if (!reg || reg->rkey != crkey) {
|
|
SPDK_ERRLOG("No registrant or current key doesn't match "
|
|
"with existing registrant key\n");
|
|
status = SPDK_NVME_SC_RESERVATION_CONFLICT;
|
|
update_sgroup = false;
|
|
goto exit;
|
|
}
|
|
|
|
num_hostid = nvmf_ns_reservation_get_all_other_hostid(ns, hostid_list,
|
|
SPDK_NVMF_MAX_NUM_REGISTRANTS,
|
|
&ctrlr->hostid);
|
|
|
|
switch (rrela) {
|
|
case SPDK_NVME_RESERVE_RELEASE:
|
|
if (!ns->holder) {
|
|
SPDK_DEBUGLOG(SPDK_LOG_NVMF, "RELEASE: no holder\n");
|
|
update_sgroup = false;
|
|
goto exit;
|
|
}
|
|
if (ns->rtype != rtype) {
|
|
SPDK_ERRLOG("Type doesn't match\n");
|
|
status = SPDK_NVME_SC_INVALID_FIELD;
|
|
update_sgroup = false;
|
|
goto exit;
|
|
}
|
|
if (!nvmf_ns_reservation_registrant_is_holder(ns, reg)) {
|
|
/* not the reservation holder, this isn't an error */
|
|
update_sgroup = false;
|
|
goto exit;
|
|
}
|
|
|
|
rtype = ns->rtype;
|
|
nvmf_ns_reservation_release_reservation(ns);
|
|
|
|
if (num_hostid && rtype != SPDK_NVME_RESERVE_WRITE_EXCLUSIVE &&
|
|
rtype != SPDK_NVME_RESERVE_EXCLUSIVE_ACCESS) {
|
|
nvmf_subsystem_gen_ctrlr_notification(ns->subsystem, ns,
|
|
hostid_list,
|
|
num_hostid,
|
|
SPDK_NVME_RESERVATION_RELEASED);
|
|
}
|
|
break;
|
|
case SPDK_NVME_RESERVE_CLEAR:
|
|
nvmf_ns_reservation_clear_all_registrants(ns);
|
|
if (num_hostid) {
|
|
nvmf_subsystem_gen_ctrlr_notification(ns->subsystem, ns,
|
|
hostid_list,
|
|
num_hostid,
|
|
SPDK_NVME_RESERVATION_PREEMPTED);
|
|
}
|
|
break;
|
|
default:
|
|
status = SPDK_NVME_SC_INVALID_FIELD;
|
|
update_sgroup = false;
|
|
goto exit;
|
|
}
|
|
|
|
exit:
|
|
req->rsp->nvme_cpl.status.sct = SPDK_NVME_SCT_GENERIC;
|
|
req->rsp->nvme_cpl.status.sc = status;
|
|
return update_sgroup;
|
|
}
|
|
|
|
static void
|
|
nvmf_ns_reservation_report(struct spdk_nvmf_ns *ns,
|
|
struct spdk_nvmf_ctrlr *ctrlr,
|
|
struct spdk_nvmf_request *req)
|
|
{
|
|
struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd;
|
|
struct spdk_nvmf_subsystem *subsystem = ctrlr->subsys;
|
|
struct spdk_nvmf_ctrlr *ctrlr_tmp;
|
|
struct spdk_nvmf_registrant *reg, *tmp;
|
|
struct spdk_nvme_reservation_status_extended_data *status_data;
|
|
struct spdk_nvme_registered_ctrlr_extended_data *ctrlr_data;
|
|
uint8_t *payload;
|
|
uint32_t len, count = 0;
|
|
uint32_t regctl = 0;
|
|
uint8_t status = SPDK_NVME_SC_SUCCESS;
|
|
|
|
/* NVMeoF uses Extended Data Structure */
|
|
if ((cmd->cdw11 & 0x00000001u) == 0) {
|
|
SPDK_ERRLOG("NVMeoF uses extended controller data structure, "
|
|
"please set EDS bit in cdw11 and try again\n");
|
|
status = SPDK_NVME_SC_INVALID_FIELD;
|
|
goto exit;
|
|
}
|
|
|
|
/* Get number of registerd controllers, one Host may have more than
|
|
* one controller based on different ports.
|
|
*/
|
|
TAILQ_FOREACH(ctrlr_tmp, &subsystem->ctrlrs, link) {
|
|
reg = nvmf_ns_reservation_get_registrant(ns, &ctrlr_tmp->hostid);
|
|
if (reg) {
|
|
regctl++;
|
|
}
|
|
}
|
|
|
|
len = sizeof(*status_data) + sizeof(*ctrlr_data) * regctl;
|
|
payload = calloc(1, len);
|
|
if (!payload) {
|
|
status = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR;
|
|
goto exit;
|
|
}
|
|
|
|
status_data = (struct spdk_nvme_reservation_status_extended_data *)payload;
|
|
status_data->data.gen = ns->gen;
|
|
status_data->data.rtype = ns->rtype;
|
|
status_data->data.regctl = regctl;
|
|
/* TODO: Don't support Persist Through Power Loss State for now */
|
|
status_data->data.ptpls = 0;
|
|
|
|
TAILQ_FOREACH_SAFE(reg, &ns->registrants, link, tmp) {
|
|
assert(count <= regctl);
|
|
ctrlr_data = (struct spdk_nvme_registered_ctrlr_extended_data *)
|
|
(payload + sizeof(*status_data) + sizeof(*ctrlr_data) * count);
|
|
/* Set to 0xffffh for dynamic controller */
|
|
ctrlr_data->cntlid = 0xffff;
|
|
ctrlr_data->rcsts.status = (ns->holder == reg) ? true : false;
|
|
ctrlr_data->rkey = reg->rkey;
|
|
spdk_uuid_copy((struct spdk_uuid *)ctrlr_data->hostid, ®->hostid);
|
|
count++;
|
|
}
|
|
|
|
memcpy(req->data, payload, spdk_min(len, (cmd->cdw10 + 1) * sizeof(uint32_t)));
|
|
free(payload);
|
|
|
|
exit:
|
|
req->rsp->nvme_cpl.status.sct = SPDK_NVME_SCT_GENERIC;
|
|
req->rsp->nvme_cpl.status.sc = status;
|
|
return;
|
|
}
|
|
|
|
static void
|
|
spdk_nvmf_ns_reservation_complete(void *ctx)
|
|
{
|
|
struct spdk_nvmf_request *req = ctx;
|
|
|
|
spdk_nvmf_request_complete(req);
|
|
}
|
|
|
|
static void
|
|
_nvmf_ns_reservation_update_done(struct spdk_nvmf_subsystem *subsystem,
|
|
void *cb_arg, int status)
|
|
{
|
|
struct spdk_nvmf_request *req = (struct spdk_nvmf_request *)cb_arg;
|
|
struct spdk_nvmf_poll_group *group = req->qpair->group;
|
|
|
|
spdk_thread_send_msg(group->thread, spdk_nvmf_ns_reservation_complete, req);
|
|
}
|
|
|
|
void
|
|
spdk_nvmf_ns_reservation_request(void *ctx)
|
|
{
|
|
struct spdk_nvmf_request *req = (struct spdk_nvmf_request *)ctx;
|
|
struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd;
|
|
struct spdk_nvmf_ctrlr *ctrlr = req->qpair->ctrlr;
|
|
struct subsystem_update_ns_ctx *update_ctx;
|
|
uint32_t nsid;
|
|
struct spdk_nvmf_ns *ns;
|
|
bool update_sgroup = false;
|
|
|
|
nsid = cmd->nsid;
|
|
ns = _spdk_nvmf_subsystem_get_ns(ctrlr->subsys, nsid);
|
|
assert(ns != NULL);
|
|
|
|
switch (cmd->opc) {
|
|
case SPDK_NVME_OPC_RESERVATION_REGISTER:
|
|
update_sgroup = nvmf_ns_reservation_register(ns, ctrlr, req);
|
|
break;
|
|
case SPDK_NVME_OPC_RESERVATION_ACQUIRE:
|
|
update_sgroup = nvmf_ns_reservation_acquire(ns, ctrlr, req);
|
|
break;
|
|
case SPDK_NVME_OPC_RESERVATION_RELEASE:
|
|
update_sgroup = nvmf_ns_reservation_release(ns, ctrlr, req);
|
|
break;
|
|
case SPDK_NVME_OPC_RESERVATION_REPORT:
|
|
nvmf_ns_reservation_report(ns, ctrlr, req);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/* update reservation information to subsystem's poll group */
|
|
if (update_sgroup) {
|
|
update_ctx = calloc(1, sizeof(*update_ctx));
|
|
if (update_ctx == NULL) {
|
|
SPDK_ERRLOG("Can't alloc subsystem poll group update context\n");
|
|
goto update_done;
|
|
}
|
|
update_ctx->subsystem = ctrlr->subsys;
|
|
update_ctx->cb_fn = _nvmf_ns_reservation_update_done;
|
|
update_ctx->cb_arg = req;
|
|
|
|
spdk_nvmf_subsystem_update_ns(ctrlr->subsys, subsystem_update_ns_done, update_ctx);
|
|
return;
|
|
}
|
|
|
|
update_done:
|
|
_nvmf_ns_reservation_update_done(ctrlr->subsys, (void *)req, 0);
|
|
}
|