#include <vpp-api/vapi/vapi.h>
#include <vpp-api/vapi/vapi_internal.h>
#include <vppinfra/types.h>
+#include <vppinfra/pool.h>
+#include <vlib/vlib.h>
#include <vlibapi/api_common.h>
-#include <vlibmemory/api_common.h>
+#include <vlibmemory/memory_client.h>
+#include <vlibmemory/memory_api.h>
+#include <vlibmemory/api.h>
+
+#include <vapi/memclnt.api.vapi.h>
+#include <vapi/vlib.api.vapi.h>
+
+#include <vlibmemory/vl_memory_msg_enum.h>
+
+#define vl_typedefs /* define message structures */
+#include <vlibmemory/vl_memory_api_h.h>
+#undef vl_typedefs
/* we need to use control pings for some stuff and because we're forced to put
* the code in headers, we need a way to be able to grab the ids of these
vapi_msg_id_t vapi_msg_id_control_ping = 0;
vapi_msg_id_t vapi_msg_id_control_ping_reply = 0;
+DEFINE_VAPI_MSG_IDS_MEMCLNT_API_JSON;
+DEFINE_VAPI_MSG_IDS_VLIB_API_JSON;
+
struct
{
size_t count;
u32 context;
vapi_cb_t callback;
void *callback_ctx;
- bool is_dump;
+ vapi_msg_id_t response_id;
+ enum vapi_request_type type;
} vapi_req_t;
static const u32 context_counter_mask = (1 << 31);
u16 vl_msg_id_max;
vapi_msg_id_t *vl_msg_id_to_vapi_msg_t;
bool connected;
+ bool handle_keepalives;
pthread_mutex_t requests_mutex;
+ bool use_uds;
+
+ svm_queue_t *vl_input_queue;
+ clib_socket_t client_socket;
+ clib_time_t time;
+ u32 my_client_index;
+ /** client message index hash table */
+ uword *msg_index_by_name_and_crc;
};
u32
}
void
-vapi_store_request (vapi_ctx_t ctx, u32 context, bool is_dump,
- vapi_cb_t callback, void *callback_ctx)
+vapi_store_request (vapi_ctx_t ctx, u32 context, vapi_msg_id_t response_id,
+ enum vapi_request_type request_type, vapi_cb_t callback,
+ void *callback_ctx)
{
assert (!vapi_requests_full (ctx));
/* if the mutex is not held, bad things will happen */
assert (0 != pthread_mutex_trylock (&ctx->requests_mutex));
const int requests_end = vapi_requests_end (ctx);
vapi_req_t *slot = &ctx->requests[requests_end];
- slot->is_dump = is_dump;
+ slot->type = request_type;
+ slot->response_id = response_id;
slot->context = context;
slot->callback = callback;
slot->callback_ctx = callback_ctx;
#endif
-void *
-vapi_msg_alloc (vapi_ctx_t ctx, size_t size)
+static void *
+vapi_shm_msg_alloc (vapi_ctx_t ctx, size_t size)
{
if (!ctx->connected)
{
return NULL;
}
- void *rv = vl_msg_api_alloc_or_null (size);
+ void *rv = vl_msg_api_alloc_as_if_client_or_null (size);
+ if (rv)
+ {
+ clib_memset (rv, 0, size);
+ }
return rv;
}
+static void *
+vapi_sock_msg_alloc (size_t size)
+{
+ u8 *rv = 0;
+ vec_validate_init_empty (rv, size - 1, 0);
+ return rv;
+}
+
+void *
+vapi_msg_alloc (vapi_ctx_t ctx, size_t size)
+{
+ if (ctx->use_uds)
+ return vapi_sock_msg_alloc (size);
+
+ return vapi_shm_msg_alloc (ctx, size);
+}
+
void
vapi_msg_free (vapi_ctx_t ctx, void *msg)
{
{
return;
}
+
#if VAPI_DEBUG_ALLOC
vapi_trace_free (msg);
#endif
- vl_msg_api_free (msg);
+
+ if (ctx->use_uds)
+ {
+ vec_free (msg);
+ }
+ else
+ {
+ vl_msg_api_free (msg);
+ }
}
vapi_msg_id_t
{
return ctx->vl_msg_id_to_vapi_msg_t[vl_msg_id];
}
- return ~0;
+ return VAPI_INVALID_MSG_ID;
}
vapi_error_e
{
goto fail;
}
+ clib_memset (ctx->vapi_msg_id_t_to_vl_msg_id, ~0,
+ __vapi_metadata.count *
+ sizeof (*ctx->vapi_msg_id_t_to_vl_msg_id));
ctx->event_cbs = calloc (__vapi_metadata.count, sizeof (*ctx->event_cbs));
if (!ctx->event_cbs)
{
}
pthread_mutex_init (&ctx->requests_mutex, NULL);
*result = ctx;
+ clib_time_init (&ctx->time);
return VAPI_OK;
fail:
vapi_ctx_free (ctx);
return vapi_lookup_vl_msg_id (ctx, id) != UINT16_MAX;
}
+/* Cut and paste to avoid adding dependency to client library */
+__clib_nosanitize_addr static void
+VL_API_VEC_UNPOISON (const void *v)
+{
+ const vec_header_t *vh = &((vec_header_t *) v)[-1];
+ clib_mem_unpoison (vh, sizeof (*vh) + vec_len (v));
+}
+
+static void
+vapi_api_name_and_crc_free (vapi_ctx_t ctx)
+{
+ int i;
+ u8 **keys = 0;
+ hash_pair_t *hp;
+
+ if (!ctx->msg_index_by_name_and_crc)
+ return;
+ hash_foreach_pair (hp, ctx->msg_index_by_name_and_crc,
+ ({ vec_add1 (keys, (u8 *) hp->key); }));
+ for (i = 0; i < vec_len (keys); i++)
+ vec_free (keys[i]);
+ vec_free (keys);
+ hash_free (ctx->msg_index_by_name_and_crc);
+}
+
+static vapi_error_e
+vapi_sock_get_errno (int err)
+{
+ switch (err)
+ {
+ case ENOTSOCK:
+ return VAPI_ENOTSOCK;
+ case EACCES:
+ return VAPI_EACCES;
+ case ECONNRESET:
+ return VAPI_ECONNRESET;
+ default:
+ break;
+ }
+ return VAPI_ESOCK_FAILURE;
+}
+
+static vapi_error_e
+vapi_sock_send (vapi_ctx_t ctx, u8 *msg)
+{
+ size_t n;
+ struct msghdr hdr;
+
+ const size_t len = vec_len (msg);
+ const size_t total_len = len + sizeof (msgbuf_t);
+
+ msgbuf_t msgbuf1 = {
+ .q = 0,
+ .gc_mark_timestamp = 0,
+ .data_len = htonl (len),
+ };
+
+ struct iovec bufs[2] = {
+ [0] = { .iov_base = &msgbuf1, .iov_len = sizeof (msgbuf1) },
+ [1] = { .iov_base = msg, .iov_len = len },
+ };
+
+ clib_memset (&hdr, 0, sizeof (hdr));
+ hdr.msg_iov = bufs;
+ hdr.msg_iovlen = 2;
+
+ n = sendmsg (ctx->client_socket.fd, &hdr, 0);
+ if (n < 0)
+ {
+ return vapi_sock_get_errno (errno);
+ }
+
+ if (n < total_len)
+ {
+ return VAPI_EAGAIN;
+ }
+
+ vec_free (msg);
+
+ return VAPI_OK;
+}
+
+static vapi_error_e
+vapi_sock_send2 (vapi_ctx_t ctx, u8 *msg1, u8 *msg2)
+{
+ size_t n;
+ struct msghdr hdr;
+
+ const size_t len1 = vec_len (msg1);
+ const size_t len2 = vec_len (msg2);
+ const size_t total_len = len1 + len2 + 2 * sizeof (msgbuf_t);
+
+ msgbuf_t msgbuf1 = {
+ .q = 0,
+ .gc_mark_timestamp = 0,
+ .data_len = htonl (len1),
+ };
+
+ msgbuf_t msgbuf2 = {
+ .q = 0,
+ .gc_mark_timestamp = 0,
+ .data_len = htonl (len2),
+ };
+
+ struct iovec bufs[4] = {
+ [0] = { .iov_base = &msgbuf1, .iov_len = sizeof (msgbuf1) },
+ [1] = { .iov_base = msg1, .iov_len = len1 },
+ [2] = { .iov_base = &msgbuf2, .iov_len = sizeof (msgbuf2) },
+ [3] = { .iov_base = msg2, .iov_len = len2 },
+ };
+
+ clib_memset (&hdr, 0, sizeof (hdr));
+ hdr.msg_iov = bufs;
+ hdr.msg_iovlen = 4;
+
+ n = sendmsg (ctx->client_socket.fd, &hdr, 0);
+ if (n < 0)
+ {
+ return vapi_sock_get_errno (errno);
+ }
+
+ if (n < total_len)
+ {
+ return VAPI_EAGAIN;
+ }
+
+ vec_free (msg1);
+ vec_free (msg2);
+
+ return VAPI_OK;
+}
+
+static vapi_error_e
+vapi_sock_recv_internal (vapi_ctx_t ctx, u8 **vec_msg, u32 timeout)
+{
+ clib_socket_t *sock = &ctx->client_socket;
+ u32 data_len = 0, msg_size;
+ msgbuf_t *mbp = 0;
+ ssize_t n, current_rx_index;
+ f64 deadline;
+ vapi_error_e rv = VAPI_EAGAIN;
+
+ if (ctx->client_socket.fd == 0)
+ return VAPI_ENOTSOCK;
+
+ deadline = clib_time_now (&ctx->time) + timeout;
+
+ while (1)
+ {
+ current_rx_index = vec_len (sock->rx_buffer);
+ while (current_rx_index < sizeof (*mbp))
+ {
+ vec_validate (sock->rx_buffer, sizeof (*mbp) - 1);
+ n = recv (sock->fd, sock->rx_buffer + current_rx_index,
+ sizeof (*mbp) - current_rx_index, MSG_DONTWAIT);
+ if (n < 0)
+ {
+ if (errno == EAGAIN && clib_time_now (&ctx->time) >= deadline)
+ return VAPI_EAGAIN;
+
+ if (errno == EAGAIN)
+ continue;
+
+ clib_unix_warning ("socket_read");
+ vec_set_len (sock->rx_buffer, current_rx_index);
+ return vapi_sock_get_errno (errno);
+ }
+ current_rx_index += n;
+ }
+ vec_set_len (sock->rx_buffer, current_rx_index);
+
+ mbp = (msgbuf_t *) (sock->rx_buffer);
+ data_len = ntohl (mbp->data_len);
+ current_rx_index = vec_len (sock->rx_buffer);
+ vec_validate (sock->rx_buffer, current_rx_index + data_len);
+ mbp = (msgbuf_t *) (sock->rx_buffer);
+ msg_size = data_len + sizeof (*mbp);
+
+ while (current_rx_index < msg_size)
+ {
+ n = recv (sock->fd, sock->rx_buffer + current_rx_index,
+ msg_size - current_rx_index, MSG_DONTWAIT);
+ if (n < 0)
+ {
+ if (errno == EAGAIN && clib_time_now (&ctx->time) >= deadline)
+ return VAPI_EAGAIN;
+
+ if (errno == EAGAIN)
+ continue;
+
+ clib_unix_warning ("socket_read");
+ vec_set_len (sock->rx_buffer, current_rx_index);
+ return vapi_sock_get_errno (errno);
+ }
+ current_rx_index += n;
+ }
+ vec_set_len (sock->rx_buffer, current_rx_index);
+
+ if (vec_len (sock->rx_buffer) >= data_len + sizeof (*mbp))
+ {
+ if (data_len)
+ {
+ vec_add (*vec_msg, mbp->data, data_len);
+ rv = VAPI_OK;
+ }
+ else
+ {
+ *vec_msg = 0;
+ }
+
+ if (vec_len (sock->rx_buffer) == data_len + sizeof (*mbp))
+ vec_set_len (sock->rx_buffer, 0);
+ else
+ vec_delete (sock->rx_buffer, data_len + sizeof (*mbp), 0);
+ mbp = 0;
+
+ /* Quit if we're out of data, and not expecting a ping reply */
+ if (vec_len (sock->rx_buffer) == 0)
+ break;
+ }
+ }
+ return rv;
+}
+
+static void
+vapi_memclnt_create_v2_reply_t_handler (vapi_ctx_t ctx,
+ vl_api_memclnt_create_v2_reply_t *mp)
+{
+ serialize_main_t _sm, *sm = &_sm;
+ u8 *tblv;
+ u32 nmsgs;
+ int i;
+ u8 *name_and_crc;
+ u32 msg_index;
+
+ ctx->my_client_index = mp->index;
+
+ /* Clean out any previous hash table (unlikely) */
+ vapi_api_name_and_crc_free (ctx);
+
+ ctx->msg_index_by_name_and_crc = hash_create_string (0, sizeof (uword));
+
+ /* Recreate the vnet-side API message handler table */
+ tblv = uword_to_pointer (mp->message_table, u8 *);
+ unserialize_open_data (sm, tblv, vec_len (tblv));
+ unserialize_integer (sm, &nmsgs, sizeof (u32));
+
+ VL_API_VEC_UNPOISON (tblv);
+
+ for (i = 0; i < nmsgs; i++)
+ {
+ msg_index = unserialize_likely_small_unsigned_integer (sm);
+ unserialize_cstring (sm, (char **) &name_and_crc);
+ hash_set_mem (ctx->msg_index_by_name_and_crc, name_and_crc, msg_index);
+ }
+}
+
+static void
+vapi_sockclnt_create_reply_t_handler (vapi_ctx_t ctx,
+ vl_api_sockclnt_create_reply_t *mp)
+{
+ int i;
+ u8 *name_and_crc;
+
+ ctx->my_client_index = mp->index;
+
+ /* Clean out any previous hash table (unlikely) */
+ vapi_api_name_and_crc_free (ctx);
+
+ ctx->msg_index_by_name_and_crc = hash_create_string (0, sizeof (uword));
+
+ for (i = 0; i < be16toh (mp->count); i++)
+ {
+ name_and_crc = format (0, "%s%c", mp->message_table[i].name, 0);
+ hash_set_mem (ctx->msg_index_by_name_and_crc, name_and_crc,
+ be16toh (mp->message_table[i].index));
+ }
+}
+
+static void
+vapi_memclnt_delete_reply_t_handler (vapi_ctx_t ctx,
+ vl_api_memclnt_delete_reply_t *mp)
+{
+ void *oldheap;
+ oldheap = vl_msg_push_heap ();
+ svm_queue_free (ctx->vl_input_queue);
+ vl_msg_pop_heap (oldheap);
+
+ ctx->my_client_index = ~0;
+ ctx->vl_input_queue = 0;
+}
+
+static void
+vapi_sockclnt_delete_reply_t_handler (vapi_ctx_t ctx,
+ vl_api_sockclnt_delete_reply_t *mp)
+{
+ ctx->my_client_index = ~0;
+ ctx->vl_input_queue = 0;
+}
+
+static int
+vapi_shm_client_connect (vapi_ctx_t ctx, const char *name, int ctx_quota,
+ int input_queue_size, bool keepalive)
+{
+ vl_api_memclnt_create_v2_t *mp;
+ vl_api_memclnt_create_v2_reply_t *rp;
+ svm_queue_t *vl_input_queue;
+ vl_shmem_hdr_t *shmem_hdr;
+ int rv = 0;
+ void *oldheap;
+ api_main_t *am = vlibapi_get_main ();
+
+ shmem_hdr = am->shmem_hdr;
+
+ if (shmem_hdr == 0 || shmem_hdr->vl_input_queue == 0)
+ {
+ clib_warning ("shmem_hdr / input queue NULL");
+ return VAPI_ECON_FAIL;
+ }
+
+ clib_mem_unpoison (shmem_hdr, sizeof (*shmem_hdr));
+ VL_MSG_API_SVM_QUEUE_UNPOISON (shmem_hdr->vl_input_queue);
+
+ oldheap = vl_msg_push_heap ();
+ vl_input_queue =
+ svm_queue_alloc_and_init (input_queue_size, sizeof (uword), getpid ());
+ vl_msg_pop_heap (oldheap);
+
+ ctx->my_client_index = ~0;
+ ctx->vl_input_queue = vl_input_queue;
+
+ mp = vl_msg_api_alloc_as_if_client (sizeof (vl_api_memclnt_create_v2_t));
+ clib_memset (mp, 0, sizeof (*mp));
+ mp->_vl_msg_id = ntohs (VL_API_MEMCLNT_CREATE_V2);
+ mp->ctx_quota = ctx_quota;
+ mp->input_queue = (uword) vl_input_queue;
+ strncpy ((char *) mp->name, name, sizeof (mp->name) - 1);
+ mp->keepalive = keepalive;
+
+ vl_msg_api_send_shmem (shmem_hdr->vl_input_queue, (u8 *) &mp);
+
+ while (1)
+ {
+ int qstatus;
+ struct timespec ts, tsrem;
+ int i;
+
+ /* Wait up to 10 seconds */
+ for (i = 0; i < 1000; i++)
+ {
+ qstatus =
+ svm_queue_sub (vl_input_queue, (u8 *) &rp, SVM_Q_NOWAIT, 0);
+ if (qstatus == 0)
+ goto read_one_msg;
+ ts.tv_sec = 0;
+ ts.tv_nsec = 10000 * 1000; /* 10 ms */
+ while (nanosleep (&ts, &tsrem) < 0)
+ ts = tsrem;
+ }
+ /* Timeout... */
+ return VAPI_ECON_FAIL;
+
+ read_one_msg:
+ VL_MSG_API_UNPOISON (rp);
+ if (ntohs (rp->_vl_msg_id) != VL_API_MEMCLNT_CREATE_V2_REPLY)
+ {
+ clib_warning ("unexpected reply: id %d", ntohs (rp->_vl_msg_id));
+ continue;
+ }
+ rv = clib_net_to_host_u32 (rp->response);
+ vapi_memclnt_create_v2_reply_t_handler (ctx, rp);
+ break;
+ }
+ return (rv);
+}
+
+static int
+vapi_sock_client_connect (vapi_ctx_t ctx, char *path, const char *name)
+{
+ clib_error_t *error;
+ clib_socket_t *sock;
+ vl_api_sockclnt_create_t *mp;
+ vl_api_sockclnt_create_reply_t *rp;
+ int rv = 0;
+ u8 *msg = 0;
+
+ ctx->my_client_index = ~0;
+
+ if (ctx->client_socket.fd)
+ return VAPI_EINVAL;
+
+ if (name == 0)
+ return VAPI_EINVAL;
+
+ sock = &ctx->client_socket;
+ sock->config = path ? path : API_SOCKET_FILE;
+ sock->flags = CLIB_SOCKET_F_IS_CLIENT;
+
+ if ((error = clib_socket_init (sock)))
+ {
+ clib_error_report (error);
+ return VAPI_ECON_FAIL;
+ }
+
+ mp = vapi_sock_msg_alloc (sizeof (vl_api_sockclnt_create_t));
+ mp->_vl_msg_id = ntohs (VL_API_SOCKCLNT_CREATE);
+ strncpy ((char *) mp->name, name, sizeof (mp->name) - 1);
+
+ if (vapi_sock_send (ctx, (void *) mp) != VAPI_OK)
+ {
+ return VAPI_ECON_FAIL;
+ }
+
+ while (1)
+ {
+ int qstatus;
+ struct timespec ts, tsrem;
+ int i;
+
+ /* Wait up to 10 seconds */
+ for (i = 0; i < 1000; i++)
+ {
+ qstatus = vapi_sock_recv_internal (ctx, &msg, 0);
+
+ if (qstatus == 0)
+ goto read_one_msg;
+ ts.tv_sec = 0;
+ ts.tv_nsec = 10000 * 1000; /* 10 ms */
+ while (nanosleep (&ts, &tsrem) < 0)
+ ts = tsrem;
+ }
+ /* Timeout... */
+ return -1;
+
+ read_one_msg:
+ if (vec_len (msg) == 0)
+ continue;
+
+ rp = (void *) msg;
+ if (ntohs (rp->_vl_msg_id) != VL_API_SOCKCLNT_CREATE_REPLY)
+ {
+ clib_warning ("unexpected reply: id %d", ntohs (rp->_vl_msg_id));
+ continue;
+ }
+ rv = clib_net_to_host_u32 (rp->response);
+ vapi_sockclnt_create_reply_t_handler (ctx, rp);
+ break;
+ }
+ return (rv);
+}
+
+static void
+vapi_shm_client_send_disconnect (vapi_ctx_t ctx, u8 do_cleanup)
+{
+ vl_api_memclnt_delete_t *mp;
+ vl_shmem_hdr_t *shmem_hdr;
+ api_main_t *am = vlibapi_get_main ();
+
+ ASSERT (am->vlib_rp);
+ shmem_hdr = am->shmem_hdr;
+ ASSERT (shmem_hdr && shmem_hdr->vl_input_queue);
+
+ mp = vl_msg_api_alloc (sizeof (vl_api_memclnt_delete_t));
+ clib_memset (mp, 0, sizeof (*mp));
+ mp->_vl_msg_id = ntohs (VL_API_MEMCLNT_DELETE);
+ mp->index = ctx->my_client_index;
+ mp->do_cleanup = do_cleanup;
+
+ vl_msg_api_send_shmem (shmem_hdr->vl_input_queue, (u8 *) &mp);
+}
+
+static vapi_error_e
+vapi_sock_client_send_disconnect (vapi_ctx_t ctx)
+{
+ vl_api_sockclnt_delete_t *mp;
+
+ mp = vapi_msg_alloc (ctx, sizeof (vl_api_sockclnt_delete_t));
+ clib_memset (mp, 0, sizeof (*mp));
+ mp->_vl_msg_id = ntohs (VL_API_SOCKCLNT_DELETE);
+ mp->client_index = ctx->my_client_index;
+
+ return vapi_sock_send (ctx, (void *) mp);
+}
+
+static int
+vapi_shm_client_disconnect (vapi_ctx_t ctx)
+{
+ vl_api_memclnt_delete_reply_t *rp;
+ svm_queue_t *vl_input_queue;
+ time_t begin;
+ msgbuf_t *msgbuf;
+
+ vl_input_queue = ctx->vl_input_queue;
+ vapi_shm_client_send_disconnect (ctx, 0 /* wait for reply */);
+
+ /*
+ * Have to be careful here, in case the client is disconnecting
+ * because e.g. the vlib process died, or is unresponsive.
+ */
+ begin = time (0);
+ while (1)
+ {
+ time_t now;
+
+ now = time (0);
+
+ if (now >= (begin + 2))
+ {
+ clib_warning ("peer unresponsive, give up");
+ ctx->my_client_index = ~0;
+ return VAPI_ENORESP;
+ }
+ if (svm_queue_sub (vl_input_queue, (u8 *) &rp, SVM_Q_NOWAIT, 0) < 0)
+ continue;
+
+ VL_MSG_API_UNPOISON (rp);
+
+ /* drain the queue */
+ if (ntohs (rp->_vl_msg_id) != VL_API_MEMCLNT_DELETE_REPLY)
+ {
+ clib_warning ("queue drain: %d", ntohs (rp->_vl_msg_id));
+ msgbuf = (msgbuf_t *) ((u8 *) rp - offsetof (msgbuf_t, data));
+ vl_msg_api_handler ((void *) rp, ntohl (msgbuf->data_len));
+ continue;
+ }
+ msgbuf = (msgbuf_t *) ((u8 *) rp - offsetof (msgbuf_t, data));
+ vl_msg_api_handler ((void *) rp, ntohl (msgbuf->data_len));
+ break;
+ }
+
+ vapi_api_name_and_crc_free (ctx);
+ return 0;
+}
+
+static vapi_error_e
+vapi_sock_client_disconnect (vapi_ctx_t ctx)
+{
+ vl_api_sockclnt_delete_reply_t *rp;
+ u8 *msg = 0;
+ msgbuf_t *msgbuf;
+ int rv;
+ f64 deadline;
+
+ deadline = clib_time_now (&ctx->time) + 2;
+
+ do
+ {
+ rv = vapi_sock_client_send_disconnect (ctx);
+ }
+ while (clib_time_now (&ctx->time) < deadline && rv != VAPI_OK);
+
+ while (1)
+ {
+ if (clib_time_now (&ctx->time) >= deadline)
+ {
+ clib_warning ("peer unresponsive, give up");
+ ctx->my_client_index = ~0;
+ return VAPI_ENORESP;
+ }
+
+ if (vapi_sock_recv_internal (ctx, &msg, 0) != VAPI_OK)
+ continue;
+
+ msgbuf = (void *) msg;
+ rp = (void *) msgbuf->data;
+ /* drain the queue */
+ if (ntohs (rp->_vl_msg_id) != VL_API_SOCKCLNT_DELETE_REPLY)
+ {
+ clib_warning ("queue drain: %d", ntohs (rp->_vl_msg_id));
+ msgbuf = (msgbuf_t *) ((u8 *) rp - offsetof (msgbuf_t, data));
+ vl_msg_api_handler ((void *) rp, ntohl (msgbuf->data_len));
+ continue;
+ }
+ msgbuf = (msgbuf_t *) ((u8 *) rp - offsetof (msgbuf_t, data));
+ vl_msg_api_handler ((void *) rp, ntohl (msgbuf->data_len));
+ break;
+ }
+
+ clib_socket_close (&ctx->client_socket);
+ vapi_api_name_and_crc_free (ctx);
+ return VAPI_OK;
+}
+
+int
+vapi_client_disconnect (vapi_ctx_t ctx)
+{
+ if (ctx->use_uds)
+ {
+ return vapi_sock_client_disconnect (ctx);
+ }
+ return vapi_shm_client_disconnect (ctx);
+}
+
+u32
+vapi_api_get_msg_index (vapi_ctx_t ctx, u8 *name_and_crc)
+{
+ uword *p;
+
+ if (ctx->msg_index_by_name_and_crc)
+ {
+ p = hash_get_mem (ctx->msg_index_by_name_and_crc, name_and_crc);
+ if (p)
+ return p[0];
+ }
+ return ~0;
+}
+
vapi_error_e
-vapi_connect (vapi_ctx_t ctx, const char *name,
- const char *chroot_prefix,
- int max_outstanding_requests,
- int response_queue_size, vapi_mode_e mode)
+vapi_connect_ex (vapi_ctx_t ctx, const char *name, const char *path,
+ int max_outstanding_requests, int response_queue_size,
+ vapi_mode_e mode, bool handle_keepalives, bool use_uds)
{
+ int rv;
+
if (response_queue_size <= 0 || max_outstanding_requests <= 0)
{
return VAPI_EINVAL;
}
+
+ if (!clib_mem_get_per_cpu_heap () && !clib_mem_init (0, 1024L * 1024 * 32))
+ {
+ return VAPI_ENOMEM;
+ }
+
ctx->requests_size = max_outstanding_requests;
const size_t size = ctx->requests_size * sizeof (*ctx->requests);
void *tmp = realloc (ctx->requests, size);
return VAPI_ENOMEM;
}
ctx->requests = tmp;
- memset (ctx->requests, 0, size);
+ clib_memset (ctx->requests, 0, size);
+ /* coverity[MISSING_LOCK] - 177211 requests_mutex is not needed here */
ctx->requests_start = ctx->requests_count = 0;
- if (chroot_prefix)
+ ctx->use_uds = use_uds;
+
+ if (use_uds)
+ {
+ if (vapi_sock_client_connect (ctx, (char *) path, name) < 0)
+ {
+ return VAPI_ECON_FAIL;
+ }
+ }
+ else
+ {
+ if (path)
+ {
+ VAPI_DBG ("set memory root path `%s'", path);
+ vl_set_memory_root_path ((char *) path);
+ }
+ static char api_map[] = "/vpe-api";
+ VAPI_DBG ("client api map `%s'", api_map);
+ if ((rv = vl_map_shmem (api_map, 0 /* is_vlib */)) < 0)
+ {
+ return VAPI_EMAP_FAIL;
+ }
+ VAPI_DBG ("connect client `%s'", name);
+ if (vapi_shm_client_connect (ctx, (char *) name, 0, response_queue_size,
+ true) < 0)
+ {
+ vl_client_api_unmap ();
+ return VAPI_ECON_FAIL;
+ }
+#if VAPI_DEBUG_CONNECT
+ VAPI_DBG ("start probing messages");
+#endif
+ }
+
+ int i;
+ for (i = 0; i < __vapi_metadata.count; ++i)
+ {
+ vapi_message_desc_t *m = __vapi_metadata.msgs[i];
+ u8 scratch[m->name_with_crc_len + 1];
+ memcpy (scratch, m->name_with_crc, m->name_with_crc_len + 1);
+ u32 id = vapi_api_get_msg_index (ctx, scratch);
+
+ if (VAPI_INVALID_MSG_ID != id)
+ {
+ if (id > UINT16_MAX)
+ {
+ VAPI_ERR ("Returned vl_msg_id `%u' > UINT16MAX `%u'!", id,
+ UINT16_MAX);
+ rv = VAPI_EINVAL;
+ goto fail;
+ }
+ if (id > ctx->vl_msg_id_max)
+ {
+ vapi_msg_id_t *tmp =
+ realloc (ctx->vl_msg_id_to_vapi_msg_t,
+ sizeof (*ctx->vl_msg_id_to_vapi_msg_t) * (id + 1));
+ if (!tmp)
+ {
+ rv = VAPI_ENOMEM;
+ goto fail;
+ }
+ ctx->vl_msg_id_to_vapi_msg_t = tmp;
+ ctx->vl_msg_id_max = id;
+ }
+ ctx->vl_msg_id_to_vapi_msg_t[id] = m->id;
+ ctx->vapi_msg_id_t_to_vl_msg_id[m->id] = id;
+#if VAPI_DEBUG_CONNECT
+ VAPI_DBG ("Message `%s' has vl_msg_id `%u'", m->name_with_crc,
+ (unsigned) id);
+#endif
+ }
+ else
+ {
+ ctx->vapi_msg_id_t_to_vl_msg_id[m->id] = UINT16_MAX;
+ VAPI_DBG ("Message `%s' not available", m->name_with_crc);
+ }
+ }
+#if VAPI_DEBUG_CONNECT
+ VAPI_DBG ("finished probing messages");
+#endif
+ if (!vapi_is_msg_available (ctx, vapi_msg_id_control_ping) ||
+ !vapi_is_msg_available (ctx, vapi_msg_id_control_ping_reply))
{
- VAPI_DBG ("set memory root path `%s'", chroot_prefix);
- vl_set_memory_root_path ((char *) chroot_prefix);
+ VAPI_ERR (
+ "control ping or control ping reply not available, cannot connect");
+ rv = VAPI_EINCOMPATIBLE;
+ goto fail;
}
- static char api_map[] = "/vpe-api";
- VAPI_DBG ("client api map `%s'", api_map);
- if ((vl_client_api_map (api_map)) < 0)
+ ctx->mode = mode;
+ ctx->connected = true;
+ if (vapi_is_msg_available (ctx, vapi_msg_id_memclnt_keepalive))
+ {
+ ctx->handle_keepalives = handle_keepalives;
+ }
+ else
+ {
+ ctx->handle_keepalives = false;
+ }
+ return VAPI_OK;
+fail:
+ vapi_client_disconnect (ctx);
+ vl_client_api_unmap ();
+ return rv;
+}
+
+vapi_error_e
+vapi_connect (vapi_ctx_t ctx, const char *name, const char *chroot_prefix,
+ int max_outstanding_requests, int response_queue_size,
+ vapi_mode_e mode, bool handle_keepalives)
+{
+ return vapi_connect_ex (ctx, name, chroot_prefix, max_outstanding_requests,
+ response_queue_size, mode, handle_keepalives, false);
+}
+
+/*
+ * API client running in the same process as VPP
+ */
+vapi_error_e
+vapi_connect_from_vpp (vapi_ctx_t ctx, const char *name,
+ int max_outstanding_requests, int response_queue_size,
+ vapi_mode_e mode, bool handle_keepalives)
+{
+ int rv;
+
+ if (ctx->use_uds)
+ {
+ return VAPI_ENOTSUP;
+ }
+
+ if (response_queue_size <= 0 || max_outstanding_requests <= 0)
+ {
+ return VAPI_EINVAL;
+ }
+
+ ctx->requests_size = max_outstanding_requests;
+ const size_t size = ctx->requests_size * sizeof (*ctx->requests);
+ void *tmp = realloc (ctx->requests, size);
+ if (!tmp)
{
- return VAPI_EMAP_FAIL;
+ return VAPI_ENOMEM;
}
+ ctx->requests = tmp;
+ clib_memset (ctx->requests, 0, size);
+ /* coverity[MISSING_LOCK] - 177211 requests_mutex is not needed here */
+ ctx->requests_start = ctx->requests_count = 0;
+
VAPI_DBG ("connect client `%s'", name);
- if (vl_client_connect ((char *) name, 0, response_queue_size) < 0)
+ if (vapi_shm_client_connect (ctx, (char *) name, 0, response_queue_size,
+ handle_keepalives) < 0)
{
- vl_client_api_unmap ();
return VAPI_ECON_FAIL;
}
-#if VAPI_DEBUG_CONNECT
- VAPI_DBG ("start probing messages");
-#endif
- int rv;
+
int i;
for (i = 0; i < __vapi_metadata.count; ++i)
{
vapi_message_desc_t *m = __vapi_metadata.msgs[i];
u8 scratch[m->name_with_crc_len + 1];
memcpy (scratch, m->name_with_crc, m->name_with_crc_len + 1);
- u32 id = vl_api_get_msg_index (scratch);
- if (~0 != id)
+ u32 id = vapi_api_get_msg_index (ctx, scratch);
+ if (VAPI_INVALID_MSG_ID != id)
{
if (id > UINT16_MAX)
{
}
if (id > ctx->vl_msg_id_max)
{
- vapi_msg_id_t *tmp = realloc (ctx->vl_msg_id_to_vapi_msg_t,
- sizeof
- (*ctx->vl_msg_id_to_vapi_msg_t) *
- (id + 1));
+ vapi_msg_id_t *tmp =
+ realloc (ctx->vl_msg_id_to_vapi_msg_t,
+ sizeof (*ctx->vl_msg_id_to_vapi_msg_t) * (id + 1));
if (!tmp)
{
rv = VAPI_ENOMEM;
}
ctx->vl_msg_id_to_vapi_msg_t[id] = m->id;
ctx->vapi_msg_id_t_to_vl_msg_id[m->id] = id;
-#if VAPI_DEBUG_CONNECT
- VAPI_DBG ("Message `%s' has vl_msg_id `%u'", m->name_with_crc,
- (unsigned) id);
-#endif
}
else
{
VAPI_DBG ("Message `%s' not available", m->name_with_crc);
}
}
-#if VAPI_DEBUG_CONNECT
- VAPI_DBG ("finished probing messages");
-#endif
if (!vapi_is_msg_available (ctx, vapi_msg_id_control_ping) ||
!vapi_is_msg_available (ctx, vapi_msg_id_control_ping_reply))
{
- VAPI_ERR
- ("control ping or control ping reply not available, cannot connect");
+ VAPI_ERR (
+ "control ping or control ping reply not available, cannot connect");
rv = VAPI_EINCOMPATIBLE;
goto fail;
}
ctx->mode = mode;
ctx->connected = true;
+ if (vapi_is_msg_available (ctx, vapi_msg_id_memclnt_keepalive))
+ {
+ ctx->handle_keepalives = handle_keepalives;
+ }
+ else
+ {
+ ctx->handle_keepalives = false;
+ }
return VAPI_OK;
fail:
- vl_client_disconnect ();
- vl_client_api_unmap ();
+ vapi_client_disconnect (ctx);
return rv;
}
vapi_error_e
-vapi_disconnect (vapi_ctx_t ctx)
+vapi_disconnect_from_vpp (vapi_ctx_t ctx)
{
if (!ctx->connected)
{
return VAPI_EINVAL;
}
- vl_client_disconnect ();
+
+ if (ctx->use_uds)
+ {
+ return VAPI_ENOTSUP;
+ }
+
+ vl_api_memclnt_delete_reply_t *rp;
+ svm_queue_t *vl_input_queue;
+ time_t begin;
+ vl_input_queue = ctx->vl_input_queue;
+ vapi_shm_client_send_disconnect (ctx, 0 /* wait for reply */);
+
+ /*
+ * Have to be careful here, in case the client is disconnecting
+ * because e.g. the vlib process died, or is unresponsive.
+ */
+ begin = time (0);
+ vapi_error_e rv = VAPI_OK;
+ while (1)
+ {
+ time_t now;
+
+ now = time (0);
+
+ if (now >= (begin + 2))
+ {
+ clib_warning ("peer unresponsive, give up");
+ ctx->my_client_index = ~0;
+ rv = VAPI_ENORESP;
+ goto fail;
+ }
+ if (svm_queue_sub (vl_input_queue, (u8 *) &rp, SVM_Q_NOWAIT, 0) < 0)
+ continue;
+
+ VL_MSG_API_UNPOISON (rp);
+
+ /* drain the queue */
+ if (ntohs (rp->_vl_msg_id) != VL_API_MEMCLNT_DELETE_REPLY)
+ {
+ clib_warning ("queue drain: %d", ntohs (rp->_vl_msg_id));
+ vl_msg_api_free (rp);
+ continue;
+ }
+ vapi_memclnt_delete_reply_t_handler (
+ ctx, (void *) rp /*, ntohl (msgbuf->data_len)*/);
+ break;
+ }
+fail:
+ vapi_api_name_and_crc_free (ctx);
+
+ ctx->connected = false;
+ return rv;
+}
+
+static vapi_error_e
+vapi_shm_disconnect (vapi_ctx_t ctx)
+{
+ vl_api_memclnt_delete_reply_t *rp;
+ svm_queue_t *vl_input_queue;
+ time_t begin;
+ vl_input_queue = ctx->vl_input_queue;
+ vapi_shm_client_send_disconnect (ctx, 0 /* wait for reply */);
+
+ /*
+ * Have to be careful here, in case the client is disconnecting
+ * because e.g. the vlib process died, or is unresponsive.
+ */
+ begin = time (0);
+ vapi_error_e rv = VAPI_OK;
+ while (1)
+ {
+ time_t now;
+
+ now = time (0);
+
+ if (now >= (begin + 2))
+ {
+ clib_warning ("peer unresponsive, give up");
+ ctx->my_client_index = ~0;
+ rv = VAPI_ENORESP;
+ goto fail;
+ }
+ if (svm_queue_sub (vl_input_queue, (u8 *) &rp, SVM_Q_NOWAIT, 0) < 0)
+ continue;
+
+ VL_MSG_API_UNPOISON (rp);
+
+ /* drain the queue */
+ if (ntohs (rp->_vl_msg_id) != VL_API_MEMCLNT_DELETE_REPLY)
+ {
+ clib_warning ("queue drain: %d", ntohs (rp->_vl_msg_id));
+ vl_msg_api_free (rp);
+ continue;
+ }
+ vapi_memclnt_delete_reply_t_handler (
+ ctx, (void *) rp /*, ntohl (msgbuf->data_len)*/);
+ break;
+ }
+fail:
+ vapi_api_name_and_crc_free (ctx);
+
vl_client_api_unmap ();
#if VAPI_DEBUG_ALLOC
vapi_to_be_freed_validate ();
#endif
ctx->connected = false;
- return VAPI_OK;
+ return rv;
+}
+
+static vapi_error_e
+vapi_sock_disconnect (vapi_ctx_t ctx)
+{
+ vl_api_sockclnt_delete_reply_t *rp;
+ time_t begin;
+ u8 *msg = 0;
+
+ vapi_sock_client_send_disconnect (ctx);
+
+ begin = time (0);
+ vapi_error_e rv = VAPI_OK;
+ while (1)
+ {
+ time_t now;
+
+ now = time (0);
+
+ if (now >= (begin + 2))
+ {
+ clib_warning ("peer unresponsive, give up");
+ ctx->my_client_index = ~0;
+ rv = VAPI_ENORESP;
+ goto fail;
+ }
+ if (vapi_sock_recv_internal (ctx, &msg, 0) < 0)
+ continue;
+
+ if (vec_len (msg) == 0)
+ continue;
+
+ rp = (void *) msg;
+
+ /* drain the queue */
+ if (ntohs (rp->_vl_msg_id) != VL_API_SOCKCLNT_DELETE_REPLY)
+ {
+ clib_warning ("queue drain: %d", ntohs (rp->_vl_msg_id));
+ continue;
+ }
+ vapi_sockclnt_delete_reply_t_handler (
+ ctx, (void *) rp /*, ntohl (msgbuf->data_len)*/);
+ break;
+ }
+fail:
+ clib_socket_close (&ctx->client_socket);
+ vapi_api_name_and_crc_free (ctx);
+
+ ctx->connected = false;
+ return rv;
}
vapi_error_e
-vapi_get_fd (vapi_ctx_t ctx, int *fd)
+vapi_disconnect (vapi_ctx_t ctx)
{
- return VAPI_ENOTSUP;
+ if (!ctx->connected)
+ {
+ return VAPI_EINVAL;
+ }
+
+ if (ctx->use_uds)
+ {
+ return vapi_sock_disconnect (ctx);
+ }
+ return vapi_shm_disconnect (ctx);
}
vapi_error_e
-vapi_send (vapi_ctx_t ctx, void *msg)
+vapi_get_fd (vapi_ctx_t ctx, int *fd)
{
- vapi_error_e rv = VAPI_OK;
- if (!ctx || !msg || !ctx->connected)
+ if (ctx->use_uds && fd)
{
- rv = VAPI_EINVAL;
- goto out;
+ *fd = ctx->client_socket.fd;
+ return VAPI_OK;
}
- int tmp;
- unix_shared_memory_queue_t *q = api_main.shmem_hdr->vl_input_queue;
+ return VAPI_ENOTSUP;
+}
+
#if VAPI_DEBUG
+static void
+vapi_debug_log (vapi_ctx_t ctx, void *msg, const char *fun)
+{
unsigned msgid = be16toh (*(u16 *) msg);
if (msgid <= ctx->vl_msg_id_max)
{
vapi_msg_id_t id = ctx->vl_msg_id_to_vapi_msg_t[msgid];
if (id < __vapi_metadata.count)
{
- VAPI_DBG ("send msg@%p:%u[%s]", msg, msgid,
+ VAPI_DBG ("%s msg@%p:%u[%s]", fun, msg, msgid,
__vapi_metadata.msgs[id]->name);
}
else
{
- VAPI_DBG ("send msg@%p:%u[UNKNOWN]", msg, msgid);
+ VAPI_DBG ("%s msg@%p:%u[UNKNOWN]", fun, msg, msgid);
}
}
else
{
- VAPI_DBG ("send msg@%p:%u[UNKNOWN]", msg, msgid);
+ VAPI_DBG ("%s msg@%p:%u[UNKNOWN]", fun, msg, msgid);
}
+}
+#endif
+
+static vapi_error_e
+vapi_shm_send (vapi_ctx_t ctx, void *msg)
+{
+ int rv = VAPI_OK;
+ int tmp;
+ svm_queue_t *q = vlibapi_get_main ()->shmem_hdr->vl_input_queue;
+#if VAPI_DEBUG
+ vapi_debug_log (ctx, msg, "send");
#endif
- tmp = unix_shared_memory_queue_add (q, (u8 *) & msg,
- VAPI_MODE_BLOCKING ==
- ctx->mode ? 0 : 1);
+ tmp =
+ svm_queue_add (q, (u8 *) &msg, VAPI_MODE_BLOCKING == ctx->mode ? 0 : 1);
if (tmp < 0)
{
rv = VAPI_EAGAIN;
}
-out:
- VAPI_DBG ("vapi_send() rv = %d", rv);
+ else
+ VL_MSG_API_POISON (msg);
+
return rv;
}
vapi_error_e
-vapi_send2 (vapi_ctx_t ctx, void *msg1, void *msg2)
+vapi_send (vapi_ctx_t ctx, void *msg)
{
vapi_error_e rv = VAPI_OK;
- if (!ctx || !msg1 || !msg2 || !ctx->connected)
+ if (!ctx || !msg || !ctx->connected)
{
rv = VAPI_EINVAL;
goto out;
}
- unix_shared_memory_queue_t *q = api_main.shmem_hdr->vl_input_queue;
-#if VAPI_DEBUG
- unsigned msgid1 = be16toh (*(u16 *) msg1);
- unsigned msgid2 = be16toh (*(u16 *) msg2);
- const char *name1 = "UNKNOWN";
- const char *name2 = "UNKNOWN";
- if (msgid1 <= ctx->vl_msg_id_max)
+
+ if (ctx->use_uds)
{
- vapi_msg_id_t id = ctx->vl_msg_id_to_vapi_msg_t[msgid1];
- if (id < __vapi_metadata.count)
- {
- name1 = __vapi_metadata.msgs[id]->name;
- }
+ rv = vapi_sock_send (ctx, msg);
}
- if (msgid2 <= ctx->vl_msg_id_max)
+ else
{
- vapi_msg_id_t id = ctx->vl_msg_id_to_vapi_msg_t[msgid2];
- if (id < __vapi_metadata.count)
- {
- name2 = __vapi_metadata.msgs[id]->name;
- }
+ rv = vapi_shm_send (ctx, msg);
}
- VAPI_DBG ("send two: %u[%s], %u[%s]", msgid1, name1, msgid2, name2);
+
+out:
+ VAPI_DBG ("vapi_send() rv = %d", rv);
+ return rv;
+}
+
+static vapi_error_e
+vapi_shm_send2 (vapi_ctx_t ctx, void *msg1, void *msg2)
+{
+ vapi_error_e rv = VAPI_OK;
+ svm_queue_t *q = vlibapi_get_main ()->shmem_hdr->vl_input_queue;
+#if VAPI_DEBUG
+ vapi_debug_log (ctx, msg1, "send2");
+ vapi_debug_log (ctx, msg2, "send2");
#endif
- int tmp = unix_shared_memory_queue_add2 (q, (u8 *) & msg1, (u8 *) & msg2,
- VAPI_MODE_BLOCKING ==
- ctx->mode ? 0 : 1);
+ int tmp = svm_queue_add2 (q, (u8 *) &msg1, (u8 *) &msg2,
+ VAPI_MODE_BLOCKING == ctx->mode ? 0 : 1);
if (tmp < 0)
{
rv = VAPI_EAGAIN;
}
-out:
- VAPI_DBG ("vapi_send() rv = %d", rv);
+ else
+ VL_MSG_API_POISON (msg1);
+
return rv;
}
vapi_error_e
-vapi_recv (vapi_ctx_t ctx, void **msg, size_t * msg_size)
+vapi_send2 (vapi_ctx_t ctx, void *msg1, void *msg2)
{
- if (!ctx || !ctx->connected || !msg || !msg_size)
+ vapi_error_e rv = VAPI_OK;
+ if (!ctx || !msg1 || !msg2 || !ctx->connected)
{
- return VAPI_EINVAL;
+ rv = VAPI_EINVAL;
+ goto out;
}
- vapi_error_e rv = VAPI_OK;
- api_main_t *am = &api_main;
- uword data;
- if (am->our_pid == 0)
+ if (ctx->use_uds)
{
- return VAPI_EINVAL;
+ rv = vapi_sock_send2 (ctx, msg1, msg2);
+ }
+ else
+ {
+ rv = vapi_shm_send2 (ctx, msg1, msg2);
}
- unix_shared_memory_queue_t *q = am->vl_input_queue;
+out:
+ VAPI_DBG ("vapi_send() rv = %d", rv);
+ return rv;
+}
+
+static vapi_error_e
+vapi_shm_recv (vapi_ctx_t ctx, void **msg, size_t *msg_size,
+ svm_q_conditional_wait_t cond, u32 time)
+{
+ vapi_error_e rv = VAPI_OK;
+ uword data;
+
+ svm_queue_t *q = ctx->vl_input_queue;
+
VAPI_DBG ("doing shm queue sub");
- int tmp = unix_shared_memory_queue_sub (q, (u8 *) & data, 0);
- if (tmp == 0)
+
+ int tmp = svm_queue_sub (q, (u8 *) & data, cond, time);
+
+ if (tmp != 0)
{
+ return VAPI_EAGAIN;
+ }
+
+ VL_MSG_API_UNPOISON ((void *) data);
#if VAPI_DEBUG_ALLOC
vapi_add_to_be_freed ((void *) data);
#endif
}
*msg = (u8 *) data;
*msg_size = ntohl (msgbuf->data_len);
+
#if VAPI_DEBUG
- unsigned msgid = be16toh (*(u16 *) * msg);
- if (msgid <= ctx->vl_msg_id_max)
- {
- vapi_msg_id_t id = ctx->vl_msg_id_to_vapi_msg_t[msgid];
- if (id < __vapi_metadata.count)
- {
- VAPI_DBG ("recv msg@%p:%u[%s]", *msg, msgid,
- __vapi_metadata.msgs[id]->name);
- }
- else
- {
- VAPI_DBG ("recv msg@%p:%u[UNKNOWN]", *msg, msgid);
- }
- }
- else
- {
- VAPI_DBG ("recv msg@%p:%u[UNKNOWN]", *msg, msgid);
- }
+ vapi_debug_log (ctx, msg, "recv");
+#endif
+
+ return rv;
+}
+
+static vapi_error_e
+vapi_sock_recv (vapi_ctx_t ctx, void **msg, size_t *msg_size, u32 time)
+{
+ vapi_error_e rv = VAPI_OK;
+ u8 *data = 0;
+ if (time == 0 && ctx->mode == VAPI_MODE_BLOCKING)
+ time = 1;
+
+ rv = vapi_sock_recv_internal (ctx, &data, time);
+
+ if (rv != VAPI_OK)
+ {
+ return rv;
+ }
+
+ *msg = data;
+ *msg_size = vec_len (data);
+
+#if VAPI_DEBUG
+ vapi_debug_log (ctx, msg, "recv");
#endif
+
+ return rv;
+}
+
+vapi_error_e
+vapi_recv (vapi_ctx_t ctx, void **msg, size_t *msg_size,
+ svm_q_conditional_wait_t cond, u32 time)
+{
+ if (!ctx || !ctx->connected || !msg || !msg_size)
+ {
+ return VAPI_EINVAL;
+ }
+ vapi_error_e rv = VAPI_OK;
+
+again:
+ if (ctx->use_uds)
+ {
+ rv = vapi_sock_recv (ctx, msg, msg_size, time);
}
else
{
- rv = VAPI_EAGAIN;
+ rv = vapi_shm_recv (ctx, msg, msg_size, cond, time);
+ }
+
+ if (rv != VAPI_OK)
+ return rv;
+
+ if (ctx->handle_keepalives)
+ {
+ unsigned msgid = be16toh (*(u16 *) *msg);
+ if (msgid == vapi_lookup_vl_msg_id (ctx, vapi_msg_id_memclnt_keepalive))
+ {
+ vapi_msg_memclnt_keepalive_reply *reply = NULL;
+ do
+ {
+ reply = vapi_msg_alloc (ctx, sizeof (*reply));
+ }
+ while (!reply);
+ reply->header.context = vapi_get_client_index (ctx);
+ reply->header._vl_msg_id =
+ vapi_lookup_vl_msg_id (ctx, vapi_msg_id_memclnt_keepalive_reply);
+ reply->payload.retval = 0;
+ vapi_msg_memclnt_keepalive_reply_hton (reply);
+ while (VAPI_EAGAIN == vapi_send (ctx, reply))
+ ;
+ vapi_msg_free (ctx, *msg);
+ goto again;
+ }
}
+
return rv;
}
vapi_error_e
-vapi_wait (vapi_ctx_t ctx, vapi_wait_mode_e mode)
+vapi_wait (vapi_ctx_t ctx)
{
- return VAPI_ENOTSUP;
+ if (ctx->use_uds)
+ return VAPI_ENOTSUP;
+
+ svm_queue_lock (ctx->vl_input_queue);
+ svm_queue_wait (ctx->vl_input_queue);
+ svm_queue_unlock (ctx->vl_input_queue);
+
+ return VAPI_OK;
}
static vapi_error_e
{
VAPI_ERR ("No response to req with context=%u",
(unsigned) ctx->requests[tmp].context);
- ctx->requests[ctx->requests_start].callback (ctx,
- ctx->requests
+ ctx->requests[ctx->requests_start].callback (ctx, ctx->requests
[ctx->
requests_start].callback_ctx,
VAPI_ENORESP, true,
NULL);
- memset (&ctx->requests[ctx->requests_start], 0,
- sizeof (ctx->requests[ctx->requests_start]));
+ clib_memset (&ctx->requests[ctx->requests_start], 0,
+ sizeof (ctx->requests[ctx->requests_start]));
++ctx->requests_start;
--ctx->requests_count;
if (ctx->requests_start == ctx->requests_size)
int payload_offset = vapi_get_payload_offset (id);
void *payload = ((u8 *) msg) + payload_offset;
bool is_last = true;
- if (ctx->requests[tmp].is_dump)
+ switch (ctx->requests[tmp].type)
{
+ case VAPI_REQUEST_STREAM:
+ if (ctx->requests[tmp].response_id == id)
+ {
+ is_last = false;
+ }
+ else
+ {
+ VAPI_DBG ("Stream response ID doesn't match current ID, move to "
+ "next ID");
+ clib_memset (&ctx->requests[tmp], 0,
+ sizeof (ctx->requests[tmp]));
+ ++ctx->requests_start;
+ --ctx->requests_count;
+ if (ctx->requests_start == ctx->requests_size)
+ {
+ ctx->requests_start = 0;
+ }
+ tmp = ctx->requests_start;
+ if (ctx->requests[tmp].context != context)
+ {
+ VAPI_ERR ("Unexpected context %u, expected context %u!",
+ ctx->requests[tmp].context, context);
+ }
+ }
+ break;
+ case VAPI_REQUEST_DUMP:
if (vapi_msg_id_control_ping_reply == id)
{
payload = NULL;
{
is_last = false;
}
+ break;
+ case VAPI_REQUEST_REG:
+ break;
}
if (payload_offset != -1)
{
- rv =
- ctx->requests[tmp].callback (ctx, ctx->requests[tmp].callback_ctx,
- VAPI_OK, is_last, payload);
+ rv = ctx->requests[tmp].callback (
+ ctx, ctx->requests[tmp].callback_ctx, VAPI_OK, is_last, payload);
}
else
{
}
if (is_last)
{
- memset (&ctx->requests[ctx->requests_start], 0,
- sizeof (ctx->requests[ctx->requests_start]));
+ clib_memset (&ctx->requests[ctx->requests_start], 0,
+ sizeof (ctx->requests[ctx->requests_start]));
++ctx->requests_start;
--ctx->requests_count;
if (ctx->requests_start == ctx->requests_size)
return __vapi_metadata.msgs[id]->has_context;
}
+static int
+vapi_verify_msg_size (vapi_msg_id_t id, void *buf, uword buf_size)
+{
+ assert (id < __vapi_metadata.count);
+ return __vapi_metadata.msgs[id]->verify_msg_size (buf, buf_size);
+}
+
vapi_error_e
vapi_dispatch_one (vapi_ctx_t ctx)
{
VAPI_DBG ("vapi_dispatch_one()");
void *msg;
- size_t size;
- vapi_error_e rv = vapi_recv (ctx, &msg, &size);
+ uword size;
+ svm_q_conditional_wait_t cond =
+ vapi_is_nonblocking (ctx) ? SVM_Q_NOWAIT : SVM_Q_WAIT;
+ vapi_error_e rv = vapi_recv (ctx, &msg, &size, cond, 0);
if (VAPI_OK != rv)
{
VAPI_DBG ("vapi_recv failed with rv=%d", rv);
vapi_msg_free (ctx, msg);
return VAPI_EINVAL;
}
- if (~0 == (unsigned) ctx->vl_msg_id_to_vapi_msg_t[vpp_id])
+ if (VAPI_INVALID_MSG_ID == (unsigned) ctx->vl_msg_id_to_vapi_msg_t[vpp_id])
{
VAPI_ERR ("Unknown msg ID received, id `%u' marked as not supported",
(unsigned) vpp_id);
return VAPI_EINVAL;
}
const vapi_msg_id_t id = ctx->vl_msg_id_to_vapi_msg_t[vpp_id];
- const size_t expect_size = vapi_get_message_size (id);
- if (size < expect_size)
+ vapi_get_swap_to_host_func (id) (msg);
+ if (vapi_verify_msg_size (id, msg, size))
{
- VAPI_ERR
- ("Invalid msg received, unexpected size `%zu' < expected min `%zu'",
- size, expect_size);
vapi_msg_free (ctx, msg);
return VAPI_EINVAL;
}
u32 context;
- vapi_get_swap_to_host_func (id) (msg);
if (vapi_msg_is_with_context (id))
{
context = *(u32 *) (((u8 *) msg) + vapi_get_context_offset (id));
int
vapi_get_client_index (vapi_ctx_t ctx)
{
- return api_main.my_client_index;
+ return ctx->my_client_index;
}
bool
return __vapi_metadata.msgs[id]->swap_to_be;
}
-size_t
-vapi_get_message_size (vapi_msg_id_t id)
-{
- assert (id < __vapi_metadata.count);
- return __vapi_metadata.msgs[id]->size;
-}
-
size_t
vapi_get_context_offset (vapi_msg_id_t id)
{
return __vapi_metadata.msgs[id]->name;
}
+void
+vapi_stop_rx_thread (vapi_ctx_t ctx)
+{
+ if (!ctx || !ctx->connected || !ctx->vl_input_queue)
+ {
+ return;
+ }
+
+ vl_client_stop_rx_thread (ctx->vl_input_queue);
+}
/*
* fd.io coding-style-patch-verification: ON
*
Code Review / vpp.git / blobdiff