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-rw-r--r--drivers/nvme/target/admin-cmd.c36
-rw-r--r--drivers/nvme/target/configfs.c50
-rw-r--r--drivers/nvme/target/core.c19
-rw-r--r--drivers/nvme/target/loop.c4
-rw-r--r--drivers/nvme/target/nvmet.h7
-rw-r--r--drivers/nvme/target/passthru.c6
-rw-r--r--drivers/nvme/target/rdma.c5
-rw-r--r--drivers/nvme/target/tcp.c2
8 files changed, 72 insertions, 57 deletions
diff --git a/drivers/nvme/target/admin-cmd.c b/drivers/nvme/target/admin-cmd.c
index bc6a774f2124..fe6b8aa90b53 100644
--- a/drivers/nvme/target/admin-cmd.c
+++ b/drivers/nvme/target/admin-cmd.c
@@ -313,27 +313,40 @@ static void nvmet_execute_get_log_page(struct nvmet_req *req)
nvmet_req_complete(req, NVME_SC_INVALID_FIELD | NVME_SC_DNR);
}
-static void nvmet_id_set_model_number(struct nvme_id_ctrl *id,
- struct nvmet_subsys *subsys)
+static u16 nvmet_set_model_number(struct nvmet_subsys *subsys)
{
- const char *model = NVMET_DEFAULT_CTRL_MODEL;
- struct nvmet_subsys_model *subsys_model;
+ u16 status = 0;
+
+ mutex_lock(&subsys->lock);
+ if (!subsys->model_number) {
+ subsys->model_number =
+ kstrdup(NVMET_DEFAULT_CTRL_MODEL, GFP_KERNEL);
+ if (!subsys->model_number)
+ status = NVME_SC_INTERNAL;
+ }
+ mutex_unlock(&subsys->lock);
- rcu_read_lock();
- subsys_model = rcu_dereference(subsys->model);
- if (subsys_model)
- model = subsys_model->number;
- memcpy_and_pad(id->mn, sizeof(id->mn), model, strlen(model), ' ');
- rcu_read_unlock();
+ return status;
}
static void nvmet_execute_identify_ctrl(struct nvmet_req *req)
{
struct nvmet_ctrl *ctrl = req->sq->ctrl;
+ struct nvmet_subsys *subsys = ctrl->subsys;
struct nvme_id_ctrl *id;
u32 cmd_capsule_size;
u16 status = 0;
+ /*
+ * If there is no model number yet, set it now. It will then remain
+ * stable for the life time of the subsystem.
+ */
+ if (!subsys->model_number) {
+ status = nvmet_set_model_number(subsys);
+ if (status)
+ goto out;
+ }
+
id = kzalloc(sizeof(*id), GFP_KERNEL);
if (!id) {
status = NVME_SC_INTERNAL;
@@ -347,7 +360,8 @@ static void nvmet_execute_identify_ctrl(struct nvmet_req *req)
memset(id->sn, ' ', sizeof(id->sn));
bin2hex(id->sn, &ctrl->subsys->serial,
min(sizeof(ctrl->subsys->serial), sizeof(id->sn) / 2));
- nvmet_id_set_model_number(id, ctrl->subsys);
+ memcpy_and_pad(id->mn, sizeof(id->mn), subsys->model_number,
+ strlen(subsys->model_number), ' ');
memcpy_and_pad(id->fr, sizeof(id->fr),
UTS_RELEASE, strlen(UTS_RELEASE), ' ');
diff --git a/drivers/nvme/target/configfs.c b/drivers/nvme/target/configfs.c
index 635a7cb45d0b..e5dbd1923b7b 100644
--- a/drivers/nvme/target/configfs.c
+++ b/drivers/nvme/target/configfs.c
@@ -1118,16 +1118,12 @@ static ssize_t nvmet_subsys_attr_model_show(struct config_item *item,
char *page)
{
struct nvmet_subsys *subsys = to_subsys(item);
- struct nvmet_subsys_model *subsys_model;
- char *model = NVMET_DEFAULT_CTRL_MODEL;
int ret;
- rcu_read_lock();
- subsys_model = rcu_dereference(subsys->model);
- if (subsys_model)
- model = subsys_model->number;
- ret = snprintf(page, PAGE_SIZE, "%s\n", model);
- rcu_read_unlock();
+ mutex_lock(&subsys->lock);
+ ret = snprintf(page, PAGE_SIZE, "%s\n", subsys->model_number ?
+ subsys->model_number : NVMET_DEFAULT_CTRL_MODEL);
+ mutex_unlock(&subsys->lock);
return ret;
}
@@ -1138,14 +1134,17 @@ static bool nvmet_is_ascii(const char c)
return c >= 0x20 && c <= 0x7e;
}
-static ssize_t nvmet_subsys_attr_model_store(struct config_item *item,
- const char *page, size_t count)
+static ssize_t nvmet_subsys_attr_model_store_locked(struct nvmet_subsys *subsys,
+ const char *page, size_t count)
{
- struct nvmet_subsys *subsys = to_subsys(item);
- struct nvmet_subsys_model *new_model;
- char *new_model_number;
int pos = 0, len;
+ if (subsys->model_number) {
+ pr_err("Can't set model number. %s is already assigned\n",
+ subsys->model_number);
+ return -EINVAL;
+ }
+
len = strcspn(page, "\n");
if (!len)
return -EINVAL;
@@ -1155,28 +1154,25 @@ static ssize_t nvmet_subsys_attr_model_store(struct config_item *item,
return -EINVAL;
}
- new_model_number = kmemdup_nul(page, len, GFP_KERNEL);
- if (!new_model_number)
+ subsys->model_number = kmemdup_nul(page, len, GFP_KERNEL);
+ if (!subsys->model_number)
return -ENOMEM;
+ return count;
+}
- new_model = kzalloc(sizeof(*new_model) + len + 1, GFP_KERNEL);
- if (!new_model) {
- kfree(new_model_number);
- return -ENOMEM;
- }
- memcpy(new_model->number, new_model_number, len);
+static ssize_t nvmet_subsys_attr_model_store(struct config_item *item,
+ const char *page, size_t count)
+{
+ struct nvmet_subsys *subsys = to_subsys(item);
+ ssize_t ret;
down_write(&nvmet_config_sem);
mutex_lock(&subsys->lock);
- new_model = rcu_replace_pointer(subsys->model, new_model,
- mutex_is_locked(&subsys->lock));
+ ret = nvmet_subsys_attr_model_store_locked(subsys, page, count);
mutex_unlock(&subsys->lock);
up_write(&nvmet_config_sem);
- kfree_rcu(new_model, rcuhead);
- kfree(new_model_number);
-
- return count;
+ return ret;
}
CONFIGFS_ATTR(nvmet_subsys_, attr_model);
diff --git a/drivers/nvme/target/core.c b/drivers/nvme/target/core.c
index 67bbf0e3b507..a027433b8be8 100644
--- a/drivers/nvme/target/core.c
+++ b/drivers/nvme/target/core.c
@@ -1118,9 +1118,20 @@ static void nvmet_start_ctrl(struct nvmet_ctrl *ctrl)
{
lockdep_assert_held(&ctrl->lock);
- if (nvmet_cc_iosqes(ctrl->cc) != NVME_NVM_IOSQES ||
- nvmet_cc_iocqes(ctrl->cc) != NVME_NVM_IOCQES ||
- nvmet_cc_mps(ctrl->cc) != 0 ||
+ /*
+ * Only I/O controllers should verify iosqes,iocqes.
+ * Strictly speaking, the spec says a discovery controller
+ * should verify iosqes,iocqes are zeroed, however that
+ * would break backwards compatibility, so don't enforce it.
+ */
+ if (ctrl->subsys->type != NVME_NQN_DISC &&
+ (nvmet_cc_iosqes(ctrl->cc) != NVME_NVM_IOSQES ||
+ nvmet_cc_iocqes(ctrl->cc) != NVME_NVM_IOCQES)) {
+ ctrl->csts = NVME_CSTS_CFS;
+ return;
+ }
+
+ if (nvmet_cc_mps(ctrl->cc) != 0 ||
nvmet_cc_ams(ctrl->cc) != 0 ||
nvmet_cc_css(ctrl->cc) != 0) {
ctrl->csts = NVME_CSTS_CFS;
@@ -1532,7 +1543,7 @@ static void nvmet_subsys_free(struct kref *ref)
nvmet_passthru_subsys_free(subsys);
kfree(subsys->subsysnqn);
- kfree_rcu(subsys->model, rcuhead);
+ kfree(subsys->model_number);
kfree(subsys);
}
diff --git a/drivers/nvme/target/loop.c b/drivers/nvme/target/loop.c
index cb6f86572b24..3e189e753bcf 100644
--- a/drivers/nvme/target/loop.c
+++ b/drivers/nvme/target/loop.c
@@ -349,7 +349,7 @@ static int nvme_loop_configure_admin_queue(struct nvme_loop_ctrl *ctrl)
memset(&ctrl->admin_tag_set, 0, sizeof(ctrl->admin_tag_set));
ctrl->admin_tag_set.ops = &nvme_loop_admin_mq_ops;
ctrl->admin_tag_set.queue_depth = NVME_AQ_MQ_TAG_DEPTH;
- ctrl->admin_tag_set.reserved_tags = 2; /* connect + keep-alive */
+ ctrl->admin_tag_set.reserved_tags = NVMF_RESERVED_TAGS;
ctrl->admin_tag_set.numa_node = ctrl->ctrl.numa_node;
ctrl->admin_tag_set.cmd_size = sizeof(struct nvme_loop_iod) +
NVME_INLINE_SG_CNT * sizeof(struct scatterlist);
@@ -520,7 +520,7 @@ static int nvme_loop_create_io_queues(struct nvme_loop_ctrl *ctrl)
memset(&ctrl->tag_set, 0, sizeof(ctrl->tag_set));
ctrl->tag_set.ops = &nvme_loop_mq_ops;
ctrl->tag_set.queue_depth = ctrl->ctrl.opts->queue_size;
- ctrl->tag_set.reserved_tags = 1; /* fabric connect */
+ ctrl->tag_set.reserved_tags = NVMF_RESERVED_TAGS;
ctrl->tag_set.numa_node = ctrl->ctrl.numa_node;
ctrl->tag_set.flags = BLK_MQ_F_SHOULD_MERGE;
ctrl->tag_set.cmd_size = sizeof(struct nvme_loop_iod) +
diff --git a/drivers/nvme/target/nvmet.h b/drivers/nvme/target/nvmet.h
index cdfa537b1c0a..4b84edb49f22 100644
--- a/drivers/nvme/target/nvmet.h
+++ b/drivers/nvme/target/nvmet.h
@@ -208,11 +208,6 @@ struct nvmet_ctrl {
bool pi_support;
};
-struct nvmet_subsys_model {
- struct rcu_head rcuhead;
- char number[];
-};
-
struct nvmet_subsys {
enum nvme_subsys_type type;
@@ -242,7 +237,7 @@ struct nvmet_subsys {
struct config_group namespaces_group;
struct config_group allowed_hosts_group;
- struct nvmet_subsys_model __rcu *model;
+ char *model_number;
#ifdef CONFIG_NVME_TARGET_PASSTHRU
struct nvme_ctrl *passthru_ctrl;
diff --git a/drivers/nvme/target/passthru.c b/drivers/nvme/target/passthru.c
index 26c587ccd152..2798944899b7 100644
--- a/drivers/nvme/target/passthru.c
+++ b/drivers/nvme/target/passthru.c
@@ -50,9 +50,9 @@ static u16 nvmet_passthru_override_id_ctrl(struct nvmet_req *req)
/*
* nvmet_passthru_map_sg is limitted to using a single bio so limit
- * the mdts based on BIO_MAX_PAGES as well
+ * the mdts based on BIO_MAX_VECS as well
*/
- max_hw_sectors = min_not_zero(BIO_MAX_PAGES << (PAGE_SHIFT - 9),
+ max_hw_sectors = min_not_zero(BIO_MAX_VECS << (PAGE_SHIFT - 9),
max_hw_sectors);
page_shift = NVME_CAP_MPSMIN(ctrl->cap) + 12;
@@ -191,7 +191,7 @@ static int nvmet_passthru_map_sg(struct nvmet_req *req, struct request *rq)
struct bio *bio;
int i;
- if (req->sg_cnt > BIO_MAX_PAGES)
+ if (req->sg_cnt > BIO_MAX_VECS)
return -EINVAL;
if (req->transfer_len <= NVMET_MAX_INLINE_DATA_LEN) {
diff --git a/drivers/nvme/target/rdma.c b/drivers/nvme/target/rdma.c
index 06b6b742bb21..6c1f3ab7649c 100644
--- a/drivers/nvme/target/rdma.c
+++ b/drivers/nvme/target/rdma.c
@@ -802,9 +802,8 @@ static void nvmet_rdma_write_data_done(struct ib_cq *cq, struct ib_wc *wc)
nvmet_req_uninit(&rsp->req);
nvmet_rdma_release_rsp(rsp);
if (wc->status != IB_WC_WR_FLUSH_ERR) {
- pr_info("RDMA WRITE for CQE 0x%p failed with status %s (%d).\n",
- wc->wr_cqe, ib_wc_status_msg(wc->status),
- wc->status);
+ pr_info("RDMA WRITE for CQE failed with status %s (%d).\n",
+ ib_wc_status_msg(wc->status), wc->status);
nvmet_rdma_error_comp(queue);
}
return;
diff --git a/drivers/nvme/target/tcp.c b/drivers/nvme/target/tcp.c
index 8b0485ada315..d658c6e8263a 100644
--- a/drivers/nvme/target/tcp.c
+++ b/drivers/nvme/target/tcp.c
@@ -1098,11 +1098,11 @@ static int nvmet_tcp_try_recv_data(struct nvmet_tcp_queue *queue)
cmd->rbytes_done += ret;
}
+ nvmet_tcp_unmap_pdu_iovec(cmd);
if (queue->data_digest) {
nvmet_tcp_prep_recv_ddgst(cmd);
return 0;
}
- nvmet_tcp_unmap_pdu_iovec(cmd);
if (!(cmd->flags & NVMET_TCP_F_INIT_FAILED) &&
cmd->rbytes_done == cmd->req.transfer_len) {
generated by cgit v1.2.3 (git 2.39.0) at 2025-01-10 21:53:45 +0300