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nvmf: Listen for incoming connections only on addresses specified

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Currently the NVMf target listens for new connections on any address.
Instead, listen only on the addresses specified by the user.

Change-Id: Idb6d37c422e442fc70a8673bd3fcfb9c27b57828
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
This commit is contained in:
Changpeng Liu 2016-08-18 10:58:15 +08:00 committed by Ben Walker
parent f36f4a7985
commit 2641c31af2
5 changed files with 114 additions and 44 deletions
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5
lib/nvmf/nvmf.c
View File

@ -130,11 +130,6 @@ nvmf_tgt_init(uint16_t max_queue_depth, uint16_t max_queues_per_sess,
SPDK_TRACELOG(SPDK_TRACE_NVMF, "Max In Capsule Data: %d bytes\n", in_capsule_data_size);
SPDK_TRACELOG(SPDK_TRACE_NVMF, "Max I/O Size: %d bytes\n", max_io_size);
/* init nvmf specific config options */
if (!g_nvmf_tgt.sin_port) {
g_nvmf_tgt.sin_port = htons(SPDK_NVMF_DEFAULT_SIN_PORT);
}
rc = spdk_nvmf_initialize_pools();
if (rc != 0) {
SPDK_ERRLOG("spdk_nvmf_initialize_pools() failed\n");

2
lib/nvmf/nvmf_internal.h
View File

@ -68,8 +68,6 @@ struct spdk_nvmf_globals {
uint32_t in_capsule_data_size;
uint32_t max_io_size;
uint16_t sin_port;
};
int nvmf_tgt_init(uint16_t max_queue_depth, uint16_t max_conn_per_sess,

98
lib/nvmf/rdma.c
View File

@ -136,17 +136,29 @@ struct spdk_nvmf_rdma_session {
struct ibv_mr *buf_mr;
};
struct spdk_nvmf_rdma_listen_addr {
char *traddr;
char *trsvc;
struct rdma_cm_id *id;
TAILQ_ENTRY(spdk_nvmf_rdma_listen_addr) link;
};
struct spdk_nvmf_rdma {
struct rdma_event_channel *acceptor_event_channel;
struct rdma_cm_id *acceptor_listen_id;
uint16_t max_queue_depth;
uint32_t max_io_size;
uint32_t in_capsule_data_size;
uint32_t num_devices_found;
pthread_mutex_t lock;
TAILQ_HEAD(, spdk_nvmf_rdma_listen_addr) listen_addrs;
};
static struct spdk_nvmf_rdma g_rdma = { };
static struct spdk_nvmf_rdma g_rdma = {
.lock = PTHREAD_MUTEX_INITIALIZER,
.listen_addrs = TAILQ_HEAD_INITIALIZER(g_rdma.listen_addrs),
};
static inline struct spdk_nvmf_rdma_conn *
get_rdma_conn(struct spdk_nvmf_conn *conn)
@ -975,17 +987,13 @@ static int
spdk_nvmf_rdma_acceptor_init(void)
{
struct sockaddr_in addr;
uint16_t sin_port;
int rc;
struct spdk_nvmf_rdma_listen_addr *listen_addr, *tmp;
if (g_rdma.num_devices_found == 0) {
return 0;
}
memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_port = g_nvmf_tgt.sin_port;
/* create an event channel with rdmacm to receive
connection oriented requests and notifications */
g_rdma.acceptor_event_channel = rdma_create_event_channel();
@ -999,30 +1007,46 @@ spdk_nvmf_rdma_acceptor_init(void)
goto create_id_error;
}
rc = rdma_create_id(g_rdma.acceptor_event_channel, &g_rdma.acceptor_listen_id, NULL, RDMA_PS_TCP);
pthread_mutex_lock(&g_rdma.lock);
TAILQ_FOREACH_SAFE(listen_addr, &g_rdma.listen_addrs, link, tmp) {
memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = inet_addr(listen_addr->traddr);
addr.sin_port = htons((uint16_t)strtoul(listen_addr->trsvc, NULL, 10));
rc = rdma_create_id(g_rdma.acceptor_event_channel, &listen_addr->id, NULL,
RDMA_PS_TCP);
if (rc < 0) {
SPDK_ERRLOG("rdma_create_id() failed\n");
goto create_id_error;
goto listen_error;
}
rc = rdma_bind_addr(g_rdma.acceptor_listen_id, (struct sockaddr *)&addr);
rc = rdma_bind_addr(listen_addr->id, (struct sockaddr *)&addr);
if (rc < 0) {
SPDK_ERRLOG("rdma_bind_addr() failed\n");
goto listen_error;
}
rc = rdma_listen(g_rdma.acceptor_listen_id, 10); /* 10 = backlog */
rc = rdma_listen(listen_addr->id, 10); /* 10 = backlog */
if (rc < 0) {
SPDK_ERRLOG("rdma_listen() failed\n");
goto listen_error;
}
sin_port = ntohs(rdma_get_src_port(g_rdma.acceptor_listen_id));
SPDK_NOTICELOG("*** NVMf Target Listening on port %d ***\n", sin_port);
SPDK_NOTICELOG("*** NVMf Target Listening on %s port %d ***\n",
listen_addr->traddr, ntohs(rdma_get_src_port(listen_addr->id)));
}
return rc;
pthread_mutex_unlock(&g_rdma.lock);
return 0;
listen_error:
rdma_destroy_id(g_rdma.acceptor_listen_id);
TAILQ_FOREACH_SAFE(listen_addr, &g_rdma.listen_addrs, link, tmp) {
if (listen_addr->id) {
rdma_destroy_id(listen_addr->id);
}
}
pthread_mutex_unlock(&g_rdma.lock);
create_id_error:
rdma_destroy_event_channel(g_rdma.acceptor_event_channel);
return -1;
@ -1031,6 +1055,14 @@ create_id_error:
static void
spdk_nvmf_rdma_acceptor_fini(void)
{
struct spdk_nvmf_rdma_listen_addr *listen_addr, *tmp;
pthread_mutex_lock(&g_rdma.lock);
TAILQ_FOREACH_SAFE(listen_addr, &g_rdma.listen_addrs, link, tmp) {
TAILQ_REMOVE(&g_rdma.listen_addrs, listen_addr, link);
free(listen_addr);
}
pthread_mutex_unlock(&g_rdma.lock);
}
static int
@ -1430,7 +1462,7 @@ spdk_nvmf_rdma_poll(struct spdk_nvmf_conn *conn)
}
static void
nvmf_rdma_discover(struct spdk_nvmf_listen_addr *listen_addr,
spdk_nvmf_rdma_discover(struct spdk_nvmf_listen_addr *listen_addr,
struct spdk_nvmf_discovery_log_page_entry *entry)
{
entry->trtype = SPDK_NVMF_TRTYPE_RDMA;
@ -1445,6 +1477,35 @@ nvmf_rdma_discover(struct spdk_nvmf_listen_addr *listen_addr,
entry->tsas.rdma.rdma_cms = SPDK_NVMF_RDMA_CMS_RDMA_CM;
}
static int
spdk_nvmf_rdma_listen(struct spdk_nvmf_listen_addr *listen_addr)
{
struct spdk_nvmf_rdma_listen_addr *addr, *tmp;
pthread_mutex_lock(&g_rdma.lock);
TAILQ_FOREACH_SAFE(addr, &g_rdma.listen_addrs, link, tmp) {
if ((!strcasecmp(addr->traddr, listen_addr->traddr)) &&
(!strcasecmp(addr->trsvc, listen_addr->trsvc))) {
pthread_mutex_unlock(&g_rdma.lock);
return 0;
}
}
addr = calloc(1, sizeof(*addr));
if (!addr) {
pthread_mutex_unlock(&g_rdma.lock);
return -1;
}
addr->traddr = listen_addr->traddr;
addr->trsvc = listen_addr->trsvc;
TAILQ_INSERT_TAIL(&g_rdma.listen_addrs, addr, link);
pthread_mutex_unlock(&g_rdma.lock);
return 0;
}
const struct spdk_nvmf_transport spdk_nvmf_transport_rdma = {
.name = "rdma",
.transport_init = spdk_nvmf_rdma_init,
@ -1454,6 +1515,9 @@ const struct spdk_nvmf_transport spdk_nvmf_transport_rdma = {
.acceptor_poll = spdk_nvmf_rdma_acceptor_poll,
.acceptor_fini = spdk_nvmf_rdma_acceptor_fini,
.listen_addr_add = spdk_nvmf_rdma_listen,
.listen_addr_discover = spdk_nvmf_rdma_discover,
.session_init = spdk_nvmf_rdma_session_init,
.session_fini = spdk_nvmf_rdma_session_fini,
@ -1463,7 +1527,7 @@ const struct spdk_nvmf_transport spdk_nvmf_transport_rdma = {
.conn_fini = spdk_nvmf_rdma_close_conn,
.conn_poll = spdk_nvmf_rdma_poll,
.listen_addr_discover = nvmf_rdma_discover,
};
SPDK_LOG_REGISTER_TRACE_FLAG("rdma", SPDK_TRACE_RDMA)

7
lib/nvmf/subsystem.c
View File

@ -175,6 +175,7 @@ spdk_nvmf_subsystem_add_listener(struct spdk_nvmf_subsystem *subsystem,
char *traddr, char *trsvc)
{
struct spdk_nvmf_listen_addr *listen_addr;
int rc;
listen_addr = calloc(1, sizeof(*listen_addr));
if (!listen_addr) {
@ -199,6 +200,12 @@ spdk_nvmf_subsystem_add_listener(struct spdk_nvmf_subsystem *subsystem,
TAILQ_INSERT_HEAD(&subsystem->listen_addrs, listen_addr, link);
subsystem->num_listen_addrs++;
rc = transport->listen_addr_add(listen_addr);
if (rc < 0) {
SPDK_ERRLOG("Unable to listen on address '%s'\n", traddr);
return -1;
}
return 0;
}

18
lib/nvmf/transport.h
View File

@ -75,6 +75,18 @@ struct spdk_nvmf_transport {
*/
void (*acceptor_fini)(void);
/**
* Instruct the acceptor to listen on the address provided. This
* may be called multiple times.
*/
int (*listen_addr_add)(struct spdk_nvmf_listen_addr *listen_addr);
/**
* Fill out a discovery log entry for a specific listen address.
*/
void (*listen_addr_discover)(struct spdk_nvmf_listen_addr *listen_addr,
struct spdk_nvmf_discovery_log_page_entry *entry);
/**
* Initialize the transport for the given session
*/
@ -108,12 +120,6 @@ struct spdk_nvmf_transport {
* Poll a connection for events.
*/
int (*conn_poll)(struct spdk_nvmf_conn *conn);
/**
* Fill out a discovery log entry for a specific listen address.
*/
void (*listen_addr_discover)(struct spdk_nvmf_listen_addr *listen_addr,
struct spdk_nvmf_discovery_log_page_entry *entry);
};
int spdk_nvmf_transport_init(void);