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nvmf: Add support of hotplug for nvmf virtual mode.

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Change-Id: I941d119e6b74eadfccd7eb7675b2f7b46d2b5907
Signed-off-by: Cunyin Chang <cunyin.chang@intel.com>
This commit is contained in:
Cunyin Chang 2017-03-02 13:39:47 +08:00 committed by Daniel Verkamp
parent 39b386a5c5
commit e58e56c9c6
5 changed files with 50 additions and 4 deletions
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2
include/spdk/nvmf.h
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@ -131,7 +131,7 @@ struct spdk_nvmf_subsystem {
char subnqn[SPDK_NVMF_NQN_MAX_LEN];
enum spdk_nvmf_subsystem_mode mode;
enum spdk_nvmf_subtype subtype;
bool is_removed;
union {
struct {
struct spdk_nvme_ctrlr *ctrlr;

17
lib/nvmf/request.c
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@ -364,10 +364,23 @@ spdk_nvmf_request_exec(struct spdk_nvmf_request *req)
if (subsystem->subtype == SPDK_NVMF_SUBTYPE_DISCOVERY) {
status = nvmf_process_discovery_cmd(req);
} else {
status = subsystem->ops->process_admin_cmd(req);
if (subsystem->is_removed) {
rsp->status.sc = SPDK_NVME_SC_ABORTED_BY_REQUEST;
status = SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
} else {
status = subsystem->ops->process_admin_cmd(req);
}
}
} else {
status = session->subsys->ops->process_io_cmd(req);
struct spdk_nvmf_subsystem *subsystem;
subsystem = session->subsys;
if (subsystem->is_removed) {
rsp->status.sc = SPDK_NVME_SC_ABORTED_BY_REQUEST;
status = SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
} else {
status = session->subsys->ops->process_io_cmd(req);
}
}
switch (status) {

20
lib/nvmf/session.c
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@ -619,12 +619,32 @@ int
spdk_nvmf_session_poll(struct spdk_nvmf_session *session)
{
struct spdk_nvmf_conn *conn, *tmp;
struct spdk_nvmf_subsystem *subsys = session->subsys;
if (subsys->is_removed && subsys->mode == NVMF_SUBSYSTEM_MODE_VIRTUAL) {
if (session->aer_req) {
struct spdk_nvmf_request *aer = session->aer_req;
aer->rsp->nvme_cpl.status.sct = SPDK_NVME_SCT_GENERIC;
aer->rsp->nvme_cpl.status.sc = SPDK_NVME_SC_ABORTED_SQ_DELETION;
aer->rsp->nvme_cpl.status.dnr = 0;
spdk_nvmf_request_complete(aer);
session->aer_req = NULL;
}
}
TAILQ_FOREACH_SAFE(conn, &session->connections, link, tmp) {
if (conn->transport->conn_poll(conn) < 0) {
SPDK_ERRLOG("Transport poll failed for conn %p; closing connection\n", conn);
spdk_nvmf_session_disconnect(conn);
}
if (subsys->subtype == SPDK_NVMF_SUBTYPE_NVME) {
if (subsys->is_removed && conn->transport->conn_is_idle(conn)) {
if (subsys->ops->detach) {
subsys->ops->detach(subsys);
}
}
}
}
return 0;

9
lib/nvmf/subsystem.c
View File

@ -463,6 +463,13 @@ spdk_nvmf_get_discovery_log_page(void *buffer, uint64_t offset, uint32_t length)
assert(copy_len + zero_len == length);
}
static void spdk_nvmf_ctrlr_hot_remove(void *remove_ctx)
{
struct spdk_nvmf_subsystem *subsystem = (struct spdk_nvmf_subsystem *)remove_ctx;
subsystem->is_removed = true;
}
int
spdk_nvmf_subsystem_add_ns(struct spdk_nvmf_subsystem *subsystem, struct spdk_bdev *bdev)
{
@ -477,7 +484,7 @@ spdk_nvmf_subsystem_add_ns(struct spdk_nvmf_subsystem *subsystem, struct spdk_bd
return -1;
}
if (!spdk_bdev_claim(bdev, NULL, NULL)) {
if (!spdk_bdev_claim(bdev, spdk_nvmf_ctrlr_hot_remove, subsystem)) {
SPDK_ERRLOG("Subsystem %s: bdev %s is already claimed\n",
subsystem->subnqn, bdev->name);
return -1;

6
test/lib/nvmf/session/session_ut.c
View File

@ -67,6 +67,12 @@ test_foobar(void)
{
}
int
spdk_nvmf_request_complete(struct spdk_nvmf_request *req)
{
return -1;
}
int main(int argc, char **argv)
{
CU_pSuite suite = NULL;