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-rw-r--r--src/uri/vppcom.c2440
1 files changed, 2440 insertions, 0 deletions
diff --git a/src/uri/vppcom.c b/src/uri/vppcom.c
new file mode 100644
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--- /dev/null
+++ b/src/uri/vppcom.c
@@ -0,0 +1,2440 @@
+/*
+ * Copyright (c) 2017 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <svm/svm_fifo_segment.h>
+#include <vlibmemory/api.h>
+#include <vpp/api/vpe_msg_enum.h>
+#include <vnet/session/application_interface.h>
+#include <uri/vppcom.h>
+#include <vlib/unix/unix.h>
+#include <vppinfra/vec_bootstrap.h>
+
+#define vl_typedefs /* define message structures */
+#include <vpp/api/vpe_all_api_h.h>
+#undef vl_typedefs
+
+/* declare message handlers for each api */
+
+#define vl_endianfun /* define message structures */
+#include <vpp/api/vpe_all_api_h.h>
+#undef vl_endianfun
+
+/* instantiate all the print functions we know about */
+#define vl_print(handle, ...)
+#define vl_printfun
+#include <vpp/api/vpe_all_api_h.h>
+#undef vl_printfun
+
+#if (CLIB_DEBUG > 0)
+/* Set VPPCOM_DEBUG 2 for connection debug, 3 for read/write debug output */
+#define VPPCOM_DEBUG 1
+#else
+#define VPPCOM_DEBUG 0
+#endif
+
+/*
+ * VPPCOM Private definitions and functions.
+ */
+typedef enum
+{
+ STATE_APP_START,
+ STATE_APP_CONN_VPP,
+ STATE_APP_ENABLED,
+ STATE_APP_ATTACHED,
+} app_state_t;
+
+typedef enum
+{
+ STATE_START,
+ STATE_CONNECT,
+ STATE_LISTEN,
+ STATE_ACCEPT,
+ STATE_DISCONNECT,
+ STATE_FAILED
+} session_state_t;
+
+typedef struct
+{
+ volatile session_state_t state;
+
+ svm_fifo_t *server_rx_fifo;
+ svm_fifo_t *server_tx_fifo;
+ u32 sm_seg_index;
+ u64 vpp_session_handle;
+ unix_shared_memory_queue_t *vpp_event_queue;
+
+ /* Socket configuration state */
+ u8 is_server;
+ u8 is_listen;
+ u8 is_cut_thru;
+ u8 is_nonblocking;
+ u32 vrf;
+ u8 is_ip4;
+ u8 ip[16];
+ u16 port;
+ u8 proto;
+ u64 client_queue_address;
+ u64 options[16];
+} session_t;
+
+typedef struct vppcom_cfg_t_
+{
+ u64 heapsize;
+ u64 segment_baseva;
+ u32 segment_size;
+ u32 add_segment_size;
+ u32 preallocated_fifo_pairs;
+ u32 rx_fifo_size;
+ u32 tx_fifo_size;
+ u32 event_queue_size;
+ u32 listen_queue_size;
+ f64 app_timeout;
+ f64 session_timeout;
+ f64 accept_timeout;
+} vppcom_cfg_t;
+
+typedef struct vppcom_main_t_
+{
+ u8 init;
+ u32 *client_session_index_fifo;
+ volatile u32 bind_session_index;
+ u32 tx_event_id;
+ int main_cpu;
+
+ /* vpe input queue */
+ unix_shared_memory_queue_t *vl_input_queue;
+
+ /* API client handle */
+ u32 my_client_index;
+
+ /* Session pool */
+ clib_spinlock_t sessions_lockp;
+ session_t *sessions;
+
+ /* Hash table for disconnect processing */
+ uword *session_index_by_vpp_handles;
+
+ /* Select bitmaps */
+ clib_bitmap_t *rd_bitmap;
+ clib_bitmap_t *wr_bitmap;
+ clib_bitmap_t *ex_bitmap;
+
+ /* Our event queue */
+ unix_shared_memory_queue_t *app_event_queue;
+
+ /* unique segment name counter */
+ u32 unique_segment_index;
+
+ pid_t my_pid;
+
+ /* For deadman timers */
+ clib_time_t clib_time;
+
+ /* State of the connection, shared between msg RX thread and main thread */
+ volatile app_state_t app_state;
+
+ vppcom_cfg_t cfg;
+
+ /* VNET_API_ERROR_FOO -> "Foo" hash table */
+ uword *error_string_by_error_number;
+} vppcom_main_t;
+
+vppcom_main_t vppcom_main = {.my_client_index = ~0 };
+
+static const char *
+vppcom_app_state_str (app_state_t state)
+{
+ char *st;
+
+ switch (state)
+ {
+ case STATE_APP_START:
+ st = "STATE_APP_START";
+ break;
+
+ case STATE_APP_CONN_VPP:
+ st = "STATE_APP_CONN_VPP";
+ break;
+
+ case STATE_APP_ENABLED:
+ st = "STATE_APP_ENABLED";
+ break;
+
+ case STATE_APP_ATTACHED:
+ st = "STATE_APP_ATTACHED";
+ break;
+
+ default:
+ st = "UNKNOWN_APP_STATE";
+ break;
+ }
+
+ return st;
+}
+
+static const char *
+vppcom_session_state_str (session_state_t state)
+{
+ char *st;
+
+ switch (state)
+ {
+ case STATE_START:
+ st = "STATE_START";
+ break;
+
+ case STATE_CONNECT:
+ st = "STATE_CONNECT";
+ break;
+
+ case STATE_LISTEN:
+ st = "STATE_LISTEN";
+ break;
+
+ case STATE_ACCEPT:
+ st = "STATE_ACCEPT";
+ break;
+
+ case STATE_DISCONNECT:
+ st = "STATE_DISCONNECT";
+ break;
+
+ case STATE_FAILED:
+ st = "STATE_FAILED";
+ break;
+
+ default:
+ st = "UNKNOWN_STATE";
+ break;
+ }
+
+ return st;
+}
+
+/*
+ * VPPCOM Utility Functions
+ */
+static inline int
+vppcom_session_at_index (u32 session_index, session_t * volatile *sess)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+
+ /* Assumes that caller has acquired spinlock: vcm->sessions_lockp */
+ if (PREDICT_FALSE ((session_index == ~0) ||
+ pool_is_free_index (vcm->sessions, session_index)))
+ {
+ clib_warning ("[%d] invalid session, sid (%d) has been closed!",
+ vcm->my_pid, session_index);
+ return VPPCOM_EBADFD;
+ }
+ *sess = pool_elt_at_index (vcm->sessions, session_index);
+ return VPPCOM_OK;
+}
+
+static int
+vppcom_connect_to_vpp (char *app_name)
+{
+ api_main_t *am = &api_main;
+ vppcom_main_t *vcm = &vppcom_main;
+
+ if (VPPCOM_DEBUG > 0)
+ printf ("\nConnecting to VPP api...");
+ if (vl_client_connect_to_vlib ("/vpe-api", app_name, 32) < 0)
+ {
+ clib_warning ("[%d] connect to vpp (%s) failed!",
+ vcm->my_pid, app_name);
+ return VPPCOM_ECONNREFUSED;
+ }
+
+ vcm->vl_input_queue = am->shmem_hdr->vl_input_queue;
+ vcm->my_client_index = am->my_client_index;
+ if (VPPCOM_DEBUG > 0)
+ printf (" connected!\n");
+
+ vcm->app_state = STATE_APP_CONN_VPP;
+ return VPPCOM_OK;
+}
+
+static u8 *
+format_api_error (u8 * s, va_list * args)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ i32 error = va_arg (*args, u32);
+ uword *p;
+
+ p = hash_get (vcm->error_string_by_error_number, -error);
+
+ if (p)
+ s = format (s, "%s (%d)", p[0], error);
+ else
+ s = format (s, "%d", error);
+ return s;
+}
+
+static void
+vppcom_init_error_string_table (void)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+
+ vcm->error_string_by_error_number = hash_create (0, sizeof (uword));
+
+#define _(n,v,s) hash_set (vcm->error_string_by_error_number, -v, s);
+ foreach_vnet_api_error;
+#undef _
+
+ hash_set (vcm->error_string_by_error_number, 99, "Misc");
+}
+
+static inline int
+vppcom_wait_for_app_state_change (app_state_t app_state)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ f64 timeout = clib_time_now (&vcm->clib_time) + vcm->cfg.app_timeout;
+
+ while (clib_time_now (&vcm->clib_time) < timeout)
+ {
+ if (vcm->app_state == app_state)
+ return VPPCOM_OK;
+ }
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] timeout waiting for state %s (%d)", vcm->my_pid,
+ vppcom_app_state_str (app_state), app_state);
+ return VPPCOM_ETIMEDOUT;
+}
+
+static inline int
+vppcom_wait_for_session_state_change (u32 session_index,
+ session_state_t state,
+ f64 wait_for_time)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ f64 timeout = clib_time_now (&vcm->clib_time) + wait_for_time;
+ session_t *volatile session;
+ int rv;
+
+ do
+ {
+ clib_spinlock_lock (&vcm->sessions_lockp);
+ rv = vppcom_session_at_index (session_index, &session);
+ if (PREDICT_FALSE (rv))
+ {
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ return rv;
+ }
+ if (session->state == state)
+ {
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ return VPPCOM_OK;
+ }
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ }
+ while (clib_time_now (&vcm->clib_time) < timeout);
+
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] timeout waiting for state %s (%d)", vcm->my_pid,
+ vppcom_session_state_str (state), state);
+ return VPPCOM_ETIMEDOUT;
+}
+
+static inline int
+vppcom_wait_for_client_session_index (f64 wait_for_time)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ f64 timeout = clib_time_now (&vcm->clib_time) + wait_for_time;
+
+ do
+ {
+ if (clib_fifo_elts (vcm->client_session_index_fifo))
+ return VPPCOM_OK;
+ }
+ while (clib_time_now (&vcm->clib_time) < timeout);
+
+ if (wait_for_time == 0)
+ return VPPCOM_EAGAIN;
+
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] timeout waiting for client_session_index",
+ vcm->my_pid);
+ return VPPCOM_ETIMEDOUT;
+}
+
+/*
+ * VPP-API message functions
+ */
+static void
+vppcom_send_session_enable_disable (u8 is_enable)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ vl_api_session_enable_disable_t *bmp;
+ bmp = vl_msg_api_alloc (sizeof (*bmp));
+ memset (bmp, 0, sizeof (*bmp));
+
+ bmp->_vl_msg_id = ntohs (VL_API_SESSION_ENABLE_DISABLE);
+ bmp->client_index = vcm->my_client_index;
+ bmp->context = htonl (0xfeedface);
+ bmp->is_enable = is_enable;
+ vl_msg_api_send_shmem (vcm->vl_input_queue, (u8 *) & bmp);
+}
+
+static int
+vppcom_app_session_enable (void)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ int rv;
+
+ if (vcm->app_state != STATE_APP_ENABLED)
+ {
+ vppcom_send_session_enable_disable (1 /* is_enabled == TRUE */ );
+ rv = vppcom_wait_for_app_state_change (STATE_APP_ENABLED);
+ if (PREDICT_FALSE (rv))
+ {
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] Session enable timed out, rv = %s (%d)",
+ vcm->my_pid, vppcom_retval_str (rv), rv);
+ return rv;
+ }
+ }
+ return VPPCOM_OK;
+}
+
+static void
+ vl_api_session_enable_disable_reply_t_handler
+ (vl_api_session_enable_disable_reply_t * mp)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+
+ if (mp->retval)
+ {
+ clib_warning ("[%d] session_enable_disable failed: %U", vcm->my_pid,
+ format_api_error, ntohl (mp->retval));
+ }
+ else
+ vcm->app_state = STATE_APP_ENABLED;
+}
+
+static void
+vppcom_app_send_attach (void)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ vl_api_application_attach_t *bmp;
+ bmp = vl_msg_api_alloc (sizeof (*bmp));
+ memset (bmp, 0, sizeof (*bmp));
+
+ bmp->_vl_msg_id = ntohs (VL_API_APPLICATION_ATTACH);
+ bmp->client_index = vcm->my_client_index;
+ bmp->context = htonl (0xfeedface);
+ bmp->options[APP_OPTIONS_FLAGS] =
+ APP_OPTIONS_FLAGS_USE_FIFO | APP_OPTIONS_FLAGS_ADD_SEGMENT;
+ bmp->options[SESSION_OPTIONS_SEGMENT_SIZE] = vcm->cfg.segment_size;
+ bmp->options[SESSION_OPTIONS_ADD_SEGMENT_SIZE] = vcm->cfg.add_segment_size;
+ bmp->options[SESSION_OPTIONS_RX_FIFO_SIZE] = vcm->cfg.rx_fifo_size;
+ bmp->options[SESSION_OPTIONS_TX_FIFO_SIZE] = vcm->cfg.tx_fifo_size;
+ vl_msg_api_send_shmem (vcm->vl_input_queue, (u8 *) & bmp);
+}
+
+static int
+vppcom_app_attach (void)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ int rv;
+
+ vppcom_app_send_attach ();
+ rv = vppcom_wait_for_app_state_change (STATE_APP_ATTACHED);
+ if (PREDICT_FALSE (rv))
+ {
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] application attach timed out, rv = %s (%d)",
+ vcm->my_pid, vppcom_retval_str (rv), rv);
+ return rv;
+ }
+ return VPPCOM_OK;
+}
+
+static void
+vppcom_app_detach (void)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ vl_api_application_detach_t *bmp;
+ bmp = vl_msg_api_alloc (sizeof (*bmp));
+ memset (bmp, 0, sizeof (*bmp));
+
+ bmp->_vl_msg_id = ntohs (VL_API_APPLICATION_DETACH);
+ bmp->client_index = vcm->my_client_index;
+ bmp->context = htonl (0xfeedface);
+ vl_msg_api_send_shmem (vcm->vl_input_queue, (u8 *) & bmp);
+}
+
+static void
+vl_api_application_attach_reply_t_handler (vl_api_application_attach_reply_t *
+ mp)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ static svm_fifo_segment_create_args_t _a;
+ svm_fifo_segment_create_args_t *a = &_a;
+ int rv;
+
+ memset (a, 0, sizeof (*a));
+ if (mp->retval)
+ {
+ clib_warning ("[%d] attach failed: %U", vcm->my_pid,
+ format_api_error, ntohl (mp->retval));
+ return;
+ }
+
+ if (mp->segment_name_length == 0)
+ {
+ clib_warning ("[%d] segment_name_length zero", vcm->my_pid);
+ return;
+ }
+
+ a->segment_name = (char *) mp->segment_name;
+ a->segment_size = mp->segment_size;
+
+ ASSERT (mp->app_event_queue_address);
+
+ /* Attach to the segment vpp created */
+ rv = svm_fifo_segment_attach (a);
+ vec_reset_length (a->new_segment_indices);
+ if (PREDICT_FALSE (rv))
+ {
+ clib_warning ("[%d] svm_fifo_segment_attach ('%s') failed", vcm->my_pid,
+ mp->segment_name);
+ return;
+ }
+
+ vcm->app_event_queue =
+ uword_to_pointer (mp->app_event_queue_address,
+ unix_shared_memory_queue_t *);
+
+ vcm->app_state = STATE_APP_ATTACHED;
+}
+
+static void
+vl_api_application_detach_reply_t_handler (vl_api_application_detach_reply_t *
+ mp)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+
+ if (mp->retval)
+ clib_warning ("[%d] detach failed: %U", vcm->my_pid, format_api_error,
+ ntohl (mp->retval));
+
+ vcm->app_state = STATE_APP_ENABLED;
+}
+
+static void
+vl_api_disconnect_session_reply_t_handler (vl_api_disconnect_session_reply_t *
+ mp)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ uword *p;
+
+ p = hash_get (vcm->session_index_by_vpp_handles, mp->handle);
+ if (p)
+ {
+ session_t *session = 0;
+ int rv;
+ clib_spinlock_lock (&vcm->sessions_lockp);
+ rv = vppcom_session_at_index (p[0], &session);
+ if (PREDICT_FALSE (rv))
+ {
+ if (VPPCOM_DEBUG > 1)
+ clib_warning ("[%d] invalid session, sid (%d) has been closed!",
+ vcm->my_pid, p[0]);
+ }
+ hash_unset (vcm->session_index_by_vpp_handles, mp->handle);
+ session->state = STATE_DISCONNECT;
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ }
+ else
+ {
+ if (VPPCOM_DEBUG > 1)
+ clib_warning ("[%d] couldn't find session key %llx", vcm->my_pid,
+ mp->handle);
+ }
+
+ if (mp->retval)
+ clib_warning ("[%d] disconnect_session failed: %U", vcm->my_pid,
+ format_api_error, ntohl (mp->retval));
+}
+
+static void
+vl_api_map_another_segment_t_handler (vl_api_map_another_segment_t * mp)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ static svm_fifo_segment_create_args_t _a;
+ svm_fifo_segment_create_args_t *a = &_a;
+ int rv;
+
+ memset (a, 0, sizeof (*a));
+ a->segment_name = (char *) mp->segment_name;
+ a->segment_size = mp->segment_size;
+ /* Attach to the segment vpp created */
+ rv = svm_fifo_segment_attach (a);
+ vec_reset_length (a->new_segment_indices);
+ if (PREDICT_FALSE (rv))
+ {
+ clib_warning ("[%d] svm_fifo_segment_attach ('%s') failed",
+ vcm->my_pid, mp->segment_name);
+ return;
+ }
+ if (VPPCOM_DEBUG > 1)
+ clib_warning ("[%d] mapped new segment '%s' size %d", vcm->my_pid,
+ mp->segment_name, mp->segment_size);
+}
+
+static void
+vl_api_disconnect_session_t_handler (vl_api_disconnect_session_t * mp)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ session_t *session = 0;
+ vl_api_disconnect_session_reply_t *rmp;
+ uword *p;
+ int rv = 0;
+
+ p = hash_get (vcm->session_index_by_vpp_handles, mp->handle);
+ if (p)
+ {
+ int rval;
+ clib_spinlock_lock (&vcm->sessions_lockp);
+ rval = vppcom_session_at_index (p[0], &session);
+ if (PREDICT_FALSE (rval))
+ {
+ if (VPPCOM_DEBUG > 1)
+ clib_warning ("[%d] invalid session, sid (%d) has been closed!",
+ vcm->my_pid, p[0]);
+ }
+ else
+ pool_put (vcm->sessions, session);
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ hash_unset (vcm->session_index_by_vpp_handles, mp->handle);
+ }
+ else
+ {
+ clib_warning ("[%d] couldn't find session key %llx", vcm->my_pid,
+ mp->handle);
+ rv = -11;
+ }
+
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ memset (rmp, 0, sizeof (*rmp));
+
+ rmp->_vl_msg_id = ntohs (VL_API_DISCONNECT_SESSION_REPLY);
+ rmp->retval = htonl (rv);
+ rmp->handle = mp->handle;
+ vl_msg_api_send_shmem (vcm->vl_input_queue, (u8 *) & rmp);
+}
+
+static void
+vl_api_reset_session_t_handler (vl_api_reset_session_t * mp)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ session_t *session = 0;
+ vl_api_reset_session_reply_t *rmp;
+ uword *p;
+ int rv = 0;
+
+ p = hash_get (vcm->session_index_by_vpp_handles, mp->handle);
+ if (p)
+ {
+ int rval;
+ clib_spinlock_lock (&vcm->sessions_lockp);
+ rval = vppcom_session_at_index (p[0], &session);
+ if (PREDICT_FALSE (rval))
+ {
+ if (VPPCOM_DEBUG > 1)
+ clib_warning ("[%d] invalid session, sid (%d) has been closed!",
+ vcm->my_pid, p[0]);
+ }
+ else
+ pool_put (vcm->sessions, session);
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ hash_unset (vcm->session_index_by_vpp_handles, mp->handle);
+ }
+ else
+ {
+ clib_warning ("[%d] couldn't find session key %llx", vcm->my_pid,
+ mp->handle);
+ rv = -11;
+ }
+
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ memset (rmp, 0, sizeof (*rmp));
+ rmp->_vl_msg_id = ntohs (VL_API_RESET_SESSION_REPLY);
+ rmp->retval = htonl (rv);
+ rmp->handle = mp->handle;
+ vl_msg_api_send_shmem (vcm->vl_input_queue, (u8 *) & rmp);
+}
+
+static void
+vl_api_connect_session_reply_t_handler (vl_api_connect_session_reply_t * mp)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ session_t *session;
+ u32 session_index;
+ svm_fifo_t *rx_fifo, *tx_fifo;
+ u8 is_cut_thru = 0;
+ int rv;
+
+ if (mp->retval)
+ {
+ clib_warning ("[%d] connect failed: %U", vcm->my_pid, format_api_error,
+ ntohl (mp->retval));
+ return;
+ }
+
+ session_index = mp->context;
+ if (VPPCOM_DEBUG > 1)
+ clib_warning ("[%d] session_index = %d 0x%08x", vcm->my_pid,
+ session_index, session_index);
+
+ clib_spinlock_lock (&vcm->sessions_lockp);
+ if (pool_is_free_index (vcm->sessions, session_index))
+ {
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ if (VPPCOM_DEBUG > 1)
+ clib_warning ("[%d] invalid session, sid %d is closed!",
+ vcm->my_pid, session_index);
+ return;
+ }
+
+ /* We've been redirected */
+ if (mp->segment_name_length > 0)
+ {
+ static svm_fifo_segment_create_args_t _a;
+ svm_fifo_segment_create_args_t *a = &_a;
+
+ is_cut_thru = 1;
+ memset (a, 0, sizeof (*a));
+ a->segment_name = (char *) mp->segment_name;
+ if (VPPCOM_DEBUG > 1)
+ clib_warning ("[%d] cut-thru segment: %s", vcm->my_pid,
+ a->segment_name);
+ rv = svm_fifo_segment_attach (a);
+ vec_reset_length (a->new_segment_indices);
+ if (PREDICT_FALSE (rv))
+ {
+ clib_warning ("[%d] sm_fifo_segment_attach ('%s') failed",
+ vcm->my_pid, a->segment_name);
+ return;
+ }
+ }
+
+ /*
+ * Setup session
+ */
+ if (VPPCOM_DEBUG > 1)
+ clib_warning ("[%d] client sid %d", vcm->my_pid, session_index);
+
+ session = pool_elt_at_index (vcm->sessions, session_index);
+ session->is_cut_thru = is_cut_thru;
+ session->vpp_event_queue = uword_to_pointer (mp->vpp_event_queue_address,
+ unix_shared_memory_queue_t *);
+
+ rx_fifo = uword_to_pointer (mp->server_rx_fifo, svm_fifo_t *);
+ rx_fifo->client_session_index = session_index;
+ tx_fifo = uword_to_pointer (mp->server_tx_fifo, svm_fifo_t *);
+ tx_fifo->client_session_index = session_index;
+
+ session->server_rx_fifo = rx_fifo;
+ session->server_tx_fifo = tx_fifo;
+ session->vpp_session_handle = mp->handle;
+ session->state = STATE_CONNECT;
+
+ /* Add it to lookup table */
+ hash_set (vcm->session_index_by_vpp_handles, mp->handle, session_index);
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+}
+
+static void
+vppcom_send_connect_sock (session_t * session, u32 session_index)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ vl_api_connect_sock_t *cmp;
+
+ /* Assumes caller as acquired the spinlock: vcm->sessions_lockp */
+ session->is_server = 0;
+ cmp = vl_msg_api_alloc (sizeof (*cmp));
+ memset (cmp, 0, sizeof (*cmp));
+ cmp->_vl_msg_id = ntohs (VL_API_CONNECT_SOCK);
+ cmp->client_index = vcm->my_client_index;
+ cmp->context = session_index;
+
+ if (VPPCOM_DEBUG > 1)
+ clib_warning ("[%d] session_index = %d 0x%08x",
+ vcm->my_pid, session_index, session_index);
+
+ cmp->vrf = session->vrf;
+ cmp->is_ip4 = session->is_ip4;
+ clib_memcpy (cmp->ip, session->ip, sizeof (cmp->ip));
+ cmp->port = session->port;
+ cmp->proto = session->proto;
+ clib_memcpy (cmp->options, session->options, sizeof (cmp->options));
+ vl_msg_api_send_shmem (vcm->vl_input_queue, (u8 *) & cmp);
+}
+
+static int
+vppcom_send_disconnect (u32 session_index)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ vl_api_disconnect_session_t *dmp;
+ session_t *session = 0;
+ int rv;
+
+ clib_spinlock_lock (&vcm->sessions_lockp);
+ rv = vppcom_session_at_index (session_index, &session);
+ if (PREDICT_FALSE (rv))
+ {
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ if (VPPCOM_DEBUG > 1)
+ clib_warning ("[%d] invalid session, sid (%d) has been closed!",
+ vcm->my_pid, session_index);
+ return rv;
+ }
+
+ dmp = vl_msg_api_alloc (sizeof (*dmp));
+ memset (dmp, 0, sizeof (*dmp));
+ dmp->_vl_msg_id = ntohs (VL_API_DISCONNECT_SESSION);
+ dmp->client_index = vcm->my_client_index;
+ dmp->handle = session->vpp_session_handle;
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ vl_msg_api_send_shmem (vcm->vl_input_queue, (u8 *) & dmp);
+ return VPPCOM_OK;
+}
+
+static void
+vl_api_bind_sock_reply_t_handler (vl_api_bind_sock_reply_t * mp)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ session_t *session = 0;
+ int rv;
+
+ if (mp->retval)
+ clib_warning ("[%d] bind failed: %U", vcm->my_pid, format_api_error,
+ ntohl (mp->retval));
+
+ ASSERT (vcm->bind_session_index != ~0);
+
+ clib_spinlock_lock (&vcm->sessions_lockp);
+ rv = vppcom_session_at_index (vcm->bind_session_index, &session);
+ if (rv == VPPCOM_OK)
+ {
+ session->vpp_session_handle = mp->handle;
+ hash_set (vcm->session_index_by_vpp_handles, mp->handle,
+ vcm->bind_session_index);
+ session->state = mp->retval ? STATE_FAILED : STATE_LISTEN;
+ vcm->bind_session_index = ~0;
+ }
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+}
+
+static void
+vl_api_unbind_sock_reply_t_handler (vl_api_unbind_sock_reply_t * mp)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ session_t *session = 0;
+ int rv;
+
+ clib_spinlock_lock (&vcm->sessions_lockp);
+ rv = vppcom_session_at_index (vcm->bind_session_index, &session);
+ if (rv == VPPCOM_OK)
+ {
+ if ((VPPCOM_DEBUG > 1) && (mp->retval))
+ clib_warning ("[%d] unbind failed: %U", vcm->my_pid, format_api_error,
+ ntohl (mp->retval));
+
+ vcm->bind_session_index = ~0;
+ session->state = STATE_START;
+ }
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+}
+
+u8 *
+format_ip4_address (u8 * s, va_list * args)
+{
+ u8 *a = va_arg (*args, u8 *);
+ return format (s, "%d.%d.%d.%d", a[0], a[1], a[2], a[3]);
+}
+
+u8 *
+format_ip6_address (u8 * s, va_list * args)
+{
+ ip6_address_t *a = va_arg (*args, ip6_address_t *);
+ u32 i, i_max_n_zero, max_n_zeros, i_first_zero, n_zeros, last_double_colon;
+
+ i_max_n_zero = ARRAY_LEN (a->as_u16);
+ max_n_zeros = 0;
+ i_first_zero = i_max_n_zero;
+ n_zeros = 0;
+ for (i = 0; i < ARRAY_LEN (a->as_u16); i++)
+ {
+ u32 is_zero = a->as_u16[i] == 0;
+ if (is_zero && i_first_zero >= ARRAY_LEN (a->as_u16))
+ {
+ i_first_zero = i;
+ n_zeros = 0;
+ }
+ n_zeros += is_zero;
+ if ((!is_zero && n_zeros > max_n_zeros)
+ || (i + 1 >= ARRAY_LEN (a->as_u16) && n_zeros > max_n_zeros))
+ {
+ i_max_n_zero = i_first_zero;
+ max_n_zeros = n_zeros;
+ i_first_zero = ARRAY_LEN (a->as_u16);
+ n_zeros = 0;
+ }
+ }
+
+ last_double_colon = 0;
+ for (i = 0; i < ARRAY_LEN (a->as_u16); i++)
+ {
+ if (i == i_max_n_zero && max_n_zeros > 1)
+ {
+ s = format (s, "::");
+ i += max_n_zeros - 1;
+ last_double_colon = 1;
+ }
+ else
+ {
+ s = format (s, "%s%x",
+ (last_double_colon || i == 0) ? "" : ":",
+ clib_net_to_host_u16 (a->as_u16[i]));
+ last_double_colon = 0;
+ }
+ }
+
+ return s;
+}
+
+/* Format an IP46 address. */
+u8 *
+format_ip46_address (u8 * s, va_list * args)
+{
+ ip46_address_t *ip46 = va_arg (*args, ip46_address_t *);
+ ip46_type_t type = va_arg (*args, ip46_type_t);
+ int is_ip4 = 1;
+
+ switch (type)
+ {
+ case IP46_TYPE_ANY:
+ is_ip4 = ip46_address_is_ip4 (ip46);
+ break;
+ case IP46_TYPE_IP4:
+ is_ip4 = 1;
+ break;
+ case IP46_TYPE_IP6:
+ is_ip4 = 0;
+ break;
+ }
+
+ return is_ip4 ?
+ format (s, "%U", format_ip4_address, &ip46->ip4) :
+ format (s, "%U", format_ip6_address, &ip46->ip6);
+}
+
+static void
+vl_api_accept_session_t_handler (vl_api_accept_session_t * mp)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ vl_api_accept_session_reply_t *rmp;
+ svm_fifo_t *rx_fifo, *tx_fifo;
+ session_t *session;
+ u32 session_index;
+ int rv = 0;
+
+ if (!clib_fifo_free_elts (vcm->client_session_index_fifo))
+ {
+ clib_warning ("[%d] client session queue is full!", vcm->my_pid);
+ rv = VNET_API_ERROR_QUEUE_FULL;
+ goto send_reply;
+ }
+
+ if (VPPCOM_DEBUG > 1)
+ {
+ u8 *ip_str = format (0, "%U", format_ip46_address, &mp->ip, mp->is_ip4);
+ clib_warning ("[%d] accepted session from: %s:%d", vcm->my_pid, ip_str,
+ clib_net_to_host_u16 (mp->port));
+ vec_free (ip_str);
+ }
+
+ clib_spinlock_lock (&vcm->sessions_lockp);
+ /* Allocate local session and set it up */
+ pool_get (vcm->sessions, session);
+ memset (session, 0, sizeof (*session));
+ session_index = session - vcm->sessions;
+
+ rx_fifo = uword_to_pointer (mp->server_rx_fifo, svm_fifo_t *);
+ rx_fifo->client_session_index = session_index;
+ tx_fifo = uword_to_pointer (mp->server_tx_fifo, svm_fifo_t *);
+ tx_fifo->client_session_index = session_index;
+
+ session->server_rx_fifo = rx_fifo;
+ session->server_tx_fifo = tx_fifo;
+ session->vpp_event_queue = uword_to_pointer (mp->vpp_event_queue_address,
+ unix_shared_memory_queue_t *);
+ session->state = STATE_ACCEPT;
+ session->is_cut_thru = 0;
+ session->is_server = 1;
+ session->port = ntohs (mp->port);
+ session->is_ip4 = mp->is_ip4;
+ clib_memcpy (session->ip, mp->ip, sizeof (session->ip));
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+
+ /* Add it to lookup table */
+ hash_set (vcm->session_index_by_vpp_handles, mp->handle, session_index);
+
+ clib_fifo_add1 (vcm->client_session_index_fifo, session_index);
+
+ /*
+ * Send accept reply to vpp
+ */
+send_reply:
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ memset (rmp, 0, sizeof (*rmp));
+ rmp->_vl_msg_id = ntohs (VL_API_ACCEPT_SESSION_REPLY);
+ rmp->retval = htonl (rv);
+ rmp->handle = mp->handle;
+ vl_msg_api_send_shmem (vcm->vl_input_queue, (u8 *) & rmp);
+}
+
+/*
+ * Acting as server for redirected connect requests
+ */
+static void
+vl_api_connect_sock_t_handler (vl_api_connect_sock_t * mp)
+{
+ static svm_fifo_segment_create_args_t _a;
+ svm_fifo_segment_create_args_t *a = &_a;
+ vppcom_main_t *vcm = &vppcom_main;
+ u32 session_index;
+ svm_fifo_segment_private_t *seg;
+ unix_shared_memory_queue_t *client_q;
+ vl_api_connect_session_reply_t *rmp;
+ session_t *session = 0;
+ int rv = 0;
+ svm_fifo_t *rx_fifo;
+ svm_fifo_t *tx_fifo;
+ unix_shared_memory_queue_t *event_q = 0;
+
+ if (!clib_fifo_free_elts (vcm->client_session_index_fifo))
+ {
+ if (VPPCOM_DEBUG > 1)
+ clib_warning ("[%d] client session queue is full!", vcm->my_pid);
+ rv = VNET_API_ERROR_QUEUE_FULL;
+ goto send_reply;
+ }
+
+ /* Create the segment */
+ memset (a, 0, sizeof (*a));
+ a->segment_name = (char *) format ((u8 *) a->segment_name, "%d:segment%d%c",
+ vcm->my_pid, vcm->unique_segment_index++,
+ 0);
+ a->segment_size = vcm->cfg.segment_size;
+ a->preallocated_fifo_pairs = vcm->cfg.preallocated_fifo_pairs;
+ a->rx_fifo_size = vcm->cfg.rx_fifo_size;
+ a->tx_fifo_size = vcm->cfg.tx_fifo_size;
+
+ rv = svm_fifo_segment_create (a);
+ if (PREDICT_FALSE (rv))
+ {
+ if (VPPCOM_DEBUG > 1)
+ clib_warning ("[%d] svm_fifo_segment_create ('%s') failed",
+ vcm->my_pid, a->segment_name);
+ vec_reset_length (a->new_segment_indices);
+ rv = VNET_API_ERROR_URI_FIFO_CREATE_FAILED;
+ goto send_reply;
+ }
+
+ if (VPPCOM_DEBUG > 1)
+ clib_warning ("[%d] created segment '%s'", vcm->my_pid, a->segment_name);
+
+ clib_spinlock_lock (&vcm->sessions_lockp);
+ pool_get (vcm->sessions, session);
+ memset (session, 0, sizeof (*session));
+ session_index = session - vcm->sessions;
+
+ session->sm_seg_index = a->new_segment_indices[0];
+ vec_reset_length (a->new_segment_indices);
+
+ seg = svm_fifo_segment_get_segment (session->sm_seg_index);
+ rx_fifo = session->server_rx_fifo =
+ svm_fifo_segment_alloc_fifo (seg, vcm->cfg.rx_fifo_size,
+ FIFO_SEGMENT_RX_FREELIST);
+ if (PREDICT_FALSE (!session->server_rx_fifo))
+ {
+ svm_fifo_segment_delete (seg);
+ clib_warning ("[%d] rx fifo alloc failed, size %ld (0x%lx)",
+ vcm->my_pid, vcm->cfg.rx_fifo_size,
+ vcm->cfg.rx_fifo_size);
+ rv = VNET_API_ERROR_URI_FIFO_CREATE_FAILED;
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ goto send_reply;
+ }
+
+ tx_fifo = session->server_tx_fifo =
+ svm_fifo_segment_alloc_fifo (seg, vcm->cfg.tx_fifo_size,
+ FIFO_SEGMENT_TX_FREELIST);
+ if (PREDICT_FALSE (!session->server_tx_fifo))
+ {
+ svm_fifo_segment_delete (seg);
+ if (VPPCOM_DEBUG > 1)
+ clib_warning ("[%d] tx fifo alloc failed, size %ld (0x%lx)",
+ vcm->my_pid, vcm->cfg.tx_fifo_size,
+ vcm->cfg.tx_fifo_size);
+ rv = VNET_API_ERROR_URI_FIFO_CREATE_FAILED;
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ goto send_reply;
+ }
+
+ session->server_rx_fifo->master_session_index = session_index;
+ session->server_tx_fifo->master_session_index = session_index;
+ session->client_queue_address = mp->client_queue_address;
+ session->is_cut_thru = 1;
+ session->is_server = 1;
+ session->is_ip4 = mp->is_ip4;
+ session->port = mp->port;
+ {
+ void *oldheap;
+ ssvm_shared_header_t *sh = seg->ssvm.sh;
+
+ ssvm_lock_non_recursive (sh, 1);
+ oldheap = ssvm_push_heap (sh);
+ event_q = session->vpp_event_queue =
+ unix_shared_memory_queue_init (vcm->cfg.event_queue_size,
+ sizeof (session_fifo_event_t),
+ vcm->my_pid, 0 /* signal not sent */ );
+ ssvm_pop_heap (oldheap);
+ ssvm_unlock_non_recursive (sh);
+ }
+ clib_memcpy (session->ip, mp->ip, sizeof (session->ip));
+
+ session->state = STATE_ACCEPT;
+ if (VPPCOM_DEBUG > 1)
+ clib_warning ("[%d] Connected cut-thru to client: sid %d",
+ vcm->my_pid, session_index);
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ clib_fifo_add1 (vcm->client_session_index_fifo, session_index);
+
+send_reply:
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ memset (rmp, 0, sizeof (*rmp));
+
+ rmp->_vl_msg_id = ntohs (VL_API_CONNECT_SESSION_REPLY);
+ rmp->context = mp->context;
+ rmp->retval = htonl (rv);
+ rmp->segment_name_length = vec_len (a->segment_name);
+ clib_memcpy (rmp->segment_name, a->segment_name, vec_len (a->segment_name));
+ vec_reset_length (a->segment_name);
+
+ if (event_q)
+ {
+ rmp->vpp_event_queue_address = pointer_to_uword (event_q);
+ rmp->server_rx_fifo = pointer_to_uword (rx_fifo);
+ rmp->server_tx_fifo = pointer_to_uword (tx_fifo);
+ }
+ client_q =
+ uword_to_pointer (mp->client_queue_address, unix_shared_memory_queue_t *);
+
+ ASSERT (client_q);
+ vl_msg_api_send_shmem (client_q, (u8 *) & rmp);
+}
+
+static void
+vppcom_send_bind_sock (session_t * session)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ vl_api_bind_sock_t *bmp;
+
+ /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
+ session->is_server = 1;
+ bmp = vl_msg_api_alloc (sizeof (*bmp));
+ memset (bmp, 0, sizeof (*bmp));
+
+ bmp->_vl_msg_id = ntohs (VL_API_BIND_SOCK);
+ bmp->client_index = vcm->my_client_index;
+ bmp->context = htonl (0xfeedface);
+ bmp->vrf = session->vrf;
+ bmp->is_ip4 = session->is_ip4;
+ clib_memcpy (bmp->ip, session->ip, sizeof (bmp->ip));
+ bmp->port = session->port;
+ bmp->proto = session->proto;
+ clib_memcpy (bmp->options, session->options, sizeof (bmp->options));
+ vl_msg_api_send_shmem (vcm->vl_input_queue, (u8 *) & bmp);
+}
+
+static void
+vppcom_send_unbind_sock (u32 session_index)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ vl_api_unbind_sock_t *ump;
+ session_t *session = 0;
+ int rv;
+
+ clib_spinlock_lock (&vcm->sessions_lockp);
+ rv = vppcom_session_at_index (session_index, &session);
+ if (PREDICT_FALSE (rv))
+ {
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] invalid session, sid (%d) has been closed!",
+ vcm->my_pid, session_index);
+ return;
+ }
+
+ ump = vl_msg_api_alloc (sizeof (*ump));
+ memset (ump, 0, sizeof (*ump));
+
+ ump->_vl_msg_id = ntohs (VL_API_UNBIND_SOCK);
+ ump->client_index = vcm->my_client_index;
+ ump->handle = session->vpp_session_handle;
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ vl_msg_api_send_shmem (vcm->vl_input_queue, (u8 *) & ump);
+}
+
+static int
+vppcom_session_unbind_cut_thru (session_t * session)
+{
+ svm_fifo_segment_main_t *sm = &svm_fifo_segment_main;
+ svm_fifo_segment_private_t *seg;
+ int rv = VPPCOM_OK;
+
+ seg = vec_elt_at_index (sm->segments, session->sm_seg_index);
+ svm_fifo_segment_free_fifo (seg, session->server_rx_fifo,
+ FIFO_SEGMENT_RX_FREELIST);
+ svm_fifo_segment_free_fifo (seg, session->server_tx_fifo,
+ FIFO_SEGMENT_TX_FREELIST);
+ svm_fifo_segment_delete (seg);
+
+ return rv;
+}
+
+static int
+vppcom_session_unbind (u32 session_index)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ int rv;
+
+ clib_spinlock_lock (&vcm->sessions_lockp);
+ if (PREDICT_FALSE (pool_is_free_index (vcm->sessions, session_index)))
+ {
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ if (VPPCOM_DEBUG > 1)
+ clib_warning ("[%d] invalid session, sid (%d) has been closed!",
+ vcm->my_pid, session_index);
+ return VPPCOM_EBADFD;
+ }
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+
+ vcm->bind_session_index = session_index;
+ vppcom_send_unbind_sock (session_index);
+ rv = vppcom_wait_for_session_state_change (session_index, STATE_START,
+ vcm->cfg.session_timeout);
+ if (PREDICT_FALSE (rv))
+ {
+ vcm->bind_session_index = ~0;
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] server unbind timed out, rv = %s (%d)",
+ vcm->my_pid, vppcom_retval_str (rv), rv);
+ return rv;
+ }
+ return VPPCOM_OK;
+}
+
+static int
+vppcom_session_disconnect (u32 session_index)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ int rv;
+
+ rv = vppcom_send_disconnect (session_index);
+ if (PREDICT_FALSE (rv))
+ return rv;
+
+ rv = vppcom_wait_for_session_state_change (session_index, STATE_DISCONNECT,
+ vcm->cfg.session_timeout);
+ if (PREDICT_FALSE (rv))
+ {
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] client disconnect timed out, rv = %s (%d)",
+ vcm->my_pid, vppcom_retval_str (rv), rv);
+ return rv;
+ }
+ return VPPCOM_OK;
+}
+
+#define foreach_sock_msg \
+_(SESSION_ENABLE_DISABLE_REPLY, session_enable_disable_reply) \
+_(BIND_SOCK_REPLY, bind_sock_reply) \
+_(UNBIND_SOCK_REPLY, unbind_sock_reply) \
+_(ACCEPT_SESSION, accept_session) \
+_(CONNECT_SOCK, connect_sock) \
+_(CONNECT_SESSION_REPLY, connect_session_reply) \
+_(DISCONNECT_SESSION, disconnect_session) \
+_(DISCONNECT_SESSION_REPLY, disconnect_session_reply) \
+_(RESET_SESSION, reset_session) \
+_(APPLICATION_ATTACH_REPLY, application_attach_reply) \
+_(APPLICATION_DETACH_REPLY, application_detach_reply) \
+_(MAP_ANOTHER_SEGMENT, map_another_segment)
+
+static void
+vppcom_api_hookup (void)
+{
+#define _(N,n) \
+ vl_msg_api_set_handlers(VL_API_##N, #n, \
+ vl_api_##n##_t_handler, \
+ vl_noop_handler, \
+ vl_api_##n##_t_endian, \
+ vl_api_##n##_t_print, \
+ sizeof(vl_api_##n##_t), 1);
+ foreach_sock_msg;
+#undef _
+}
+
+static void
+vppcom_cfg_init (vppcom_cfg_t * vcl_cfg)
+{
+ ASSERT (vcl_cfg);
+
+ vcl_cfg->heapsize = (256ULL << 20);
+ vcl_cfg->segment_baseva = 0x200000000ULL;
+ vcl_cfg->segment_size = (256 << 20);
+ vcl_cfg->add_segment_size = (128 << 20);
+ vcl_cfg->preallocated_fifo_pairs = 8;
+ vcl_cfg->rx_fifo_size = (1 << 20);
+ vcl_cfg->tx_fifo_size = (1 << 20);
+ vcl_cfg->event_queue_size = 2048;
+ vcl_cfg->listen_queue_size = CLIB_CACHE_LINE_BYTES / sizeof (u32);
+ vcl_cfg->app_timeout = 10 * 60.0;
+ vcl_cfg->session_timeout = 10 * 60.0;
+ vcl_cfg->accept_timeout = 60.0;
+}
+
+static void
+vppcom_cfg_heapsize (char *conf_fname)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ vppcom_cfg_t *vcl_cfg = &vcm->cfg;
+ FILE *fp;
+ char inbuf[4096];
+ int argc = 1;
+ char **argv = NULL;
+ char *arg = NULL;
+ char *p;
+ int i;
+ u8 *sizep;
+ u32 size;
+
+ fp = fopen (conf_fname, "r");
+ if (fp == NULL)
+ {
+ if (VPPCOM_DEBUG > 0)
+ fprintf (stderr, "open configuration file '%s' failed\n", conf_fname);
+ goto defaulted;
+ }
+ argv = calloc (1, sizeof (char *));
+ if (argv == NULL)
+ goto defaulted;
+
+ while (1)
+ {
+ if (fgets (inbuf, 4096, fp) == 0)
+ break;
+ p = strtok (inbuf, " \t\n");
+ while (p != NULL)
+ {
+ if (*p == '#')
+ break;
+ argc++;
+ char **tmp = realloc (argv, argc * sizeof (char *));
+ if (tmp == NULL)
+ goto defaulted;
+ argv = tmp;
+ arg = strndup (p, 1024);
+ if (arg == NULL)
+ goto defaulted;
+ argv[argc - 1] = arg;
+ p = strtok (NULL, " \t\n");
+ }
+ }
+
+ fclose (fp);
+ fp = NULL;
+
+ char **tmp = realloc (argv, (argc + 1) * sizeof (char *));
+ if (tmp == NULL)
+ goto defaulted;
+ argv = tmp;
+ argv[argc] = NULL;
+
+ /*
+ * Look for and parse the "heapsize" config parameter.
+ * Manual since none of the clib infra has been bootstrapped yet.
+ *
+ * Format: heapsize <nn>[mM][gG]
+ */
+
+ for (i = 1; i < (argc - 1); i++)
+ {
+ if (!strncmp (argv[i], "heapsize", 8))
+ {
+ sizep = (u8 *) argv[i + 1];
+ size = 0;
+ while (*sizep >= '0' && *sizep <= '9')
+ {
+ size *= 10;
+ size += *sizep++ - '0';
+ }
+ if (size == 0)
+ {
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] parse error '%s %s', "
+ "using default heapsize %lld (0x%llx)",
+ vcm->my_pid, argv[i], argv[i + 1],
+ vcl_cfg->heapsize, vcl_cfg->heapsize);
+ goto defaulted;
+ }
+
+ if (*sizep == 'g' || *sizep == 'G')
+ vcl_cfg->heapsize = size << 30;
+ else if (*sizep == 'm' || *sizep == 'M')
+ vcl_cfg->heapsize = size << 20;
+ else
+ {
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] parse error '%s %s', "
+ "using default heapsize %lld (0x%llx)",
+ vcm->my_pid, argv[i], argv[i + 1],
+ vcl_cfg->heapsize, vcl_cfg->heapsize);
+ goto defaulted;
+ }
+ }
+ }
+
+defaulted:
+ if (fp != NULL)
+ fclose (fp);
+ if (argv != NULL)
+ free (argv);
+ if (!clib_mem_init (0, vcl_cfg->heapsize))
+ clib_warning ("[%d] vppcom heap allocation failure!", vcm->my_pid);
+ else if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] allocated vppcom heapsize %lld (0x%llx)",
+ vcm->my_pid, vcl_cfg->heapsize, vcl_cfg->heapsize);
+}
+
+static void
+vppcom_cfg_read (char *conf_fname)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ vppcom_cfg_t *vcl_cfg = &vcm->cfg;
+ int fd;
+ unformat_input_t _input, *input = &_input;
+ unformat_input_t _line_input, *line_input = &_line_input;
+ u8 vc_cfg_input = 0;
+ u8 *chroot_path;
+ struct stat s;
+ u32 uid, gid;
+
+ fd = open (conf_fname, O_RDONLY);
+ if (fd < 0)
+ {
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] open configuration file '%s' failed!",
+ vcm->my_pid, conf_fname);
+ goto file_done;
+ }
+
+ if (fstat (fd, &s) < 0)
+ {
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] failed to stat `%s'", vcm->my_pid, conf_fname);
+ goto file_done;
+ }
+
+ if (!(S_ISREG (s.st_mode) || S_ISLNK (s.st_mode)))
+ {
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] not a regular file `%s'", vcm->my_pid,
+ conf_fname);
+ goto file_done;
+ }
+
+ unformat_init_unix_file (input, fd);
+
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ {
+ (void) unformat_user (input, unformat_line_input, line_input);
+ unformat_skip_white_space (line_input);
+
+ if (unformat (line_input, "vppcom {"))
+ {
+ vc_cfg_input = 1;
+ continue;
+ }
+
+ if (vc_cfg_input)
+ {
+ if (unformat (line_input, "heapsize %s", &chroot_path))
+ {
+ vec_terminate_c_string (chroot_path);
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] configured heapsize %s, "
+ "actual heapsize %lld (0x%llx)",
+ vcm->my_pid, chroot_path, vcl_cfg->heapsize,
+ vcl_cfg->heapsize);
+ vec_free (chroot_path);
+ }
+ else if (unformat (line_input, "api-prefix %s", &chroot_path))
+ {
+ vec_terminate_c_string (chroot_path);
+ vl_set_memory_root_path ((char *) chroot_path);
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] configured api-prefix %s",
+ vcm->my_pid, chroot_path);
+ chroot_path = 0; /* Don't vec_free() it! */
+ }
+ else if (unformat (line_input, "uid %d", &uid))
+ {
+ vl_set_memory_uid (uid);
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] configured uid %d", vcm->my_pid, uid);
+ }
+ else if (unformat (line_input, "gid %d", &gid))
+ {
+ vl_set_memory_gid (gid);
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] configured gid %d", vcm->my_pid, gid);
+ }
+ else if (unformat (line_input, "segment-baseva 0x%llx",
+ &vcl_cfg->segment_baseva))
+ {
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] configured segment_baseva 0x%llx",
+ vcm->my_pid, vcl_cfg->segment_baseva);
+ }
+ else if (unformat (line_input, "segment-size 0x%lx",
+ &vcl_cfg->segment_size))
+ {
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] configured segment_size 0x%lx (%ld)",
+ vcm->my_pid, vcl_cfg->segment_size,
+ vcl_cfg->segment_size);
+ }
+ else if (unformat (line_input, "segment-size %ld",
+ &vcl_cfg->segment_size))
+ {
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] configured segment_size %ld (0x%lx)",
+ vcm->my_pid, vcl_cfg->segment_size,
+ vcl_cfg->segment_size);
+ }
+ else if (unformat (line_input, "add-segment-size 0x%lx",
+ &vcl_cfg->add_segment_size))
+ {
+ if (VPPCOM_DEBUG > 0)
+ clib_warning
+ ("[%d] configured add_segment_size 0x%lx (%ld)",
+ vcm->my_pid, vcl_cfg->add_segment_size,
+ vcl_cfg->add_segment_size);
+ }
+ else if (unformat (line_input, "add-segment-size %ld",
+ &vcl_cfg->add_segment_size))
+ {
+ if (VPPCOM_DEBUG > 0)
+ clib_warning
+ ("[%d] configured add_segment_size %ld (0x%lx)",
+ vcm->my_pid, vcl_cfg->add_segment_size,
+ vcl_cfg->add_segment_size);
+ }
+ else if (unformat (line_input, "preallocated-fifo-pairs %d",
+ &vcl_cfg->preallocated_fifo_pairs))
+ {
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] configured preallocated_fifo_pairs "
+ "%d (0x%x)", vcm->my_pid,
+ vcl_cfg->preallocated_fifo_pairs,
+ vcl_cfg->preallocated_fifo_pairs);
+ }
+ else if (unformat (line_input, "rx-fifo-size 0x%lx",
+ &vcl_cfg->rx_fifo_size))
+ {
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] configured rx_fifo_size 0x%lx (%ld)",
+ vcm->my_pid, vcl_cfg->rx_fifo_size,
+ vcl_cfg->rx_fifo_size);
+ }
+ else if (unformat (line_input, "rx-fifo-size %ld",
+ &vcl_cfg->rx_fifo_size))
+ {
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] configured rx_fifo_size %ld (0x%lx)",
+ vcm->my_pid, vcl_cfg->rx_fifo_size,
+ vcl_cfg->rx_fifo_size);
+ }
+ else if (unformat (line_input, "tx-fifo-size 0x%lx",
+ &vcl_cfg->tx_fifo_size))
+ {
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] configured tx_fifo_size 0x%lx (%ld)",
+ vcm->my_pid, vcl_cfg->tx_fifo_size,
+ vcl_cfg->tx_fifo_size);
+ }
+ else if (unformat (line_input, "tx-fifo-size %ld",
+ &vcl_cfg->tx_fifo_size))
+ {
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] configured tx_fifo_size %ld (0x%lx)",
+ vcm->my_pid, vcl_cfg->tx_fifo_size,
+ vcl_cfg->tx_fifo_size);
+ }
+ else if (unformat (line_input, "event-queue-size 0x%lx",
+ &vcl_cfg->event_queue_size))
+ {
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] configured event_queue_size 0x%lx (%ld)",
+ vcm->my_pid, vcl_cfg->event_queue_size,
+ vcl_cfg->event_queue_size);
+ }
+ else if (unformat (line_input, "event-queue-size %ld",
+ &vcl_cfg->event_queue_size))
+ {
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] configured event_queue_size %ld (0x%lx)",
+ vcm->my_pid, vcl_cfg->event_queue_size,
+ vcl_cfg->event_queue_size);
+ }
+ else if (unformat (line_input, "listen-queue-size 0x%lx",
+ &vcl_cfg->listen_queue_size))
+ {
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] configured listen_queue_size 0x%lx (%ld)",
+ vcm->my_pid, vcl_cfg->listen_queue_size,
+ vcl_cfg->listen_queue_size);
+ }
+ else if (unformat (line_input, "listen-queue-size %ld",
+ &vcl_cfg->listen_queue_size))
+ {
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] configured listen_queue_size %ld (0x%lx)",
+ vcm->my_pid, vcl_cfg->listen_queue_size,
+ vcl_cfg->listen_queue_size);
+ }
+ else if (unformat (line_input, "app-timeout %f",
+ &vcl_cfg->app_timeout))
+ {
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] configured app_timeout %f",
+ vcm->my_pid, vcl_cfg->app_timeout);
+ }
+ else if (unformat (line_input, "session-timeout %f",
+ &vcl_cfg->session_timeout))
+ {
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] configured session_timeout %f",
+ vcm->my_pid, vcl_cfg->session_timeout);
+ }
+ else if (unformat (line_input, "accept-timeout %f",
+ &vcl_cfg->accept_timeout))
+ {
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] configured accept_timeout %f",
+ vcm->my_pid, vcl_cfg->accept_timeout);
+ }
+ else if (unformat (line_input, "}"))
+ {
+ vc_cfg_input = 0;
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] completed parsing vppcom config!",
+ vcm->my_pid);
+ goto input_done;
+ }
+ else
+ {
+ if (line_input->buffer[line_input->index] != '#')
+ {
+ clib_warning ("[%d] Unknown vppcom config option: '%s'",
+ vcm->my_pid, (char *)
+ &line_input->buffer[line_input->index]);
+ }
+ }
+ }
+ }
+
+input_done:
+ unformat_free (input);
+
+file_done:
+ if (fd >= 0)
+ close (fd);
+}
+
+/*
+ * VPPCOM Public API functions
+ */
+int
+vppcom_app_create (char *app_name)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ vppcom_cfg_t *vcl_cfg = &vcm->cfg;
+ u8 *heap;
+ mheap_t *h;
+ int rv;
+
+ if (!vcm->init)
+ {
+ char *conf_fname;
+
+ vcm->init = 1;
+ vcm->my_pid = getpid ();
+ clib_fifo_validate (vcm->client_session_index_fifo,
+ vcm->cfg.listen_queue_size);
+ vppcom_cfg_init (vcl_cfg);
+ conf_fname = getenv (VPPCOM_CONF_ENV);
+ if (!conf_fname)
+ {
+ conf_fname = VPPCOM_CONF_DEFAULT;
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] getenv '%s' failed!", vcm->my_pid,
+ VPPCOM_CONF_ENV);
+ }
+ vppcom_cfg_heapsize (conf_fname);
+ vppcom_cfg_read (conf_fname);
+ vcm->bind_session_index = ~0;
+ vcm->main_cpu = os_get_thread_index ();
+ heap = clib_mem_get_per_cpu_heap ();
+ h = mheap_header (heap);
+
+ /* make the main heap thread-safe */
+ h->flags |= MHEAP_FLAG_THREAD_SAFE;
+
+ vcm->session_index_by_vpp_handles = hash_create (0, sizeof (uword));
+
+ clib_time_init (&vcm->clib_time);
+ vppcom_init_error_string_table ();
+ svm_fifo_segment_init (vcl_cfg->segment_baseva,
+ 20 /* timeout in secs */ );
+ clib_spinlock_init (&vcm->sessions_lockp);
+ vppcom_api_hookup ();
+ }
+
+ if (vcm->my_client_index == ~0)
+ {
+ vcm->app_state = STATE_APP_START;
+ rv = vppcom_connect_to_vpp (app_name);
+ if (rv)
+ {
+ clib_warning ("[%s] couldn't connect to VPP.", vcm->my_pid);
+ return rv;
+ }
+
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] sending session enable", vcm->my_pid);
+
+ rv = vppcom_app_session_enable ();
+ if (rv)
+ {
+ clib_warning ("[%d] vppcom_app_session_enable() failed!",
+ vcm->my_pid);
+ return rv;
+ }
+
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] sending app attach", vcm->my_pid);
+
+ rv = vppcom_app_attach ();
+ if (rv)
+ {
+ clib_warning ("[%d] vppcom_app_attach() failed!", vcm->my_pid);
+ return rv;
+ }
+ }
+
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] app_name '%s', my_client_index %d (0x%x)",
+ vcm->my_pid, app_name, vcm->my_client_index,
+ vcm->my_client_index);
+
+ return VPPCOM_OK;
+}
+
+void
+vppcom_app_destroy (void)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ int rv;
+
+ if (vcm->my_client_index == ~0)
+ return;
+
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] detaching from VPP, my_client_index %d (0x%x)",
+ vcm->my_pid, vcm->my_client_index, vcm->my_client_index);
+
+ vppcom_app_detach ();
+ rv = vppcom_wait_for_app_state_change (STATE_APP_ENABLED);
+ if (PREDICT_FALSE (rv))
+ {
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] application detach timed out, rv = %s (%d)",
+ vcm->my_pid, vppcom_retval_str (rv), rv);
+ }
+ vl_client_disconnect_from_vlib ();
+ vcm->my_client_index = ~0;
+ vcm->app_state = STATE_APP_START;
+}
+
+int
+vppcom_session_create (u32 vrf, u8 proto, u8 is_nonblocking)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ session_t *session;
+ u32 session_index;
+
+ clib_spinlock_lock (&vcm->sessions_lockp);
+ pool_get (vcm->sessions, session);
+ session_index = session - vcm->sessions;
+
+ session->vrf = vrf;
+ session->proto = proto;
+ session->state = STATE_START;
+ session->is_nonblocking = is_nonblocking;
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] sid %d", vcm->my_pid, session_index);
+
+ return (int) session_index;
+}
+
+int
+vppcom_session_close (uint32_t session_index)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ session_t *session = 0;
+ int rv;
+
+ clib_spinlock_lock (&vcm->sessions_lockp);
+ rv = vppcom_session_at_index (session_index, &session);
+ if (PREDICT_FALSE (rv))
+ {
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] invalid session, sid (%d) has been closed!",
+ vcm->my_pid, session_index);
+ return rv;
+ }
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] sid %d", vcm->my_pid, session_index);
+
+ if (session->is_cut_thru)
+ {
+ if (session->is_server)
+ {
+ rv = vppcom_session_unbind_cut_thru (session);
+ if ((VPPCOM_DEBUG > 0) && (rv < 0))
+ clib_warning ("[%d] unbind cut-thru (session %d) failed, "
+ "rv = %s (%d)",
+ vcm->my_pid, session_index,
+ vppcom_retval_str (rv), rv);
+ }
+ }
+ else if (session->is_server)
+ {
+ rv = vppcom_session_unbind (session_index);
+ if ((VPPCOM_DEBUG > 0) && (rv < 0))
+ clib_warning ("[%d] unbind (session %d) failed, rv = %s (%d)",
+ vcm->my_pid, session_index, vppcom_retval_str (rv), rv);
+ }
+ else
+ {
+ rv = vppcom_session_disconnect (session_index);
+ if ((VPPCOM_DEBUG > 0) && (rv < 0))
+ clib_warning ("[%d] disconnect (session %d) failed, rv = %s (%d)",
+ vcm->my_pid, session_index, vppcom_retval_str (rv), rv);
+ }
+ if (rv < 0)
+ return rv;
+
+ clib_spinlock_lock (&vcm->sessions_lockp);
+ pool_put_index (vcm->sessions, session_index);
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ return rv;
+}
+
+int
+vppcom_session_bind (uint32_t session_index, vppcom_endpt_t * ep)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ session_t *session = 0;
+ int rv;
+ ip46_address_t *ip46;
+
+ if (!ep || !ep->ip)
+ return VPPCOM_EINVAL;
+
+ clib_spinlock_lock (&vcm->sessions_lockp);
+ rv = vppcom_session_at_index (session_index, &session);
+ if (PREDICT_FALSE (rv))
+ {
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] invalid session, sid (%d) has been closed!",
+ vcm->my_pid, session_index);
+ return rv;
+ }
+
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] sid %d", vcm->my_pid, session_index);
+
+ session->vrf = ep->vrf;
+ session->is_ip4 = ep->is_ip4;
+ memset (session->ip, 0, sizeof (session->ip));
+ ip46 = (ip46_address_t *) session->ip;
+ *ip46 = to_ip46 (!ep->is_ip4, ep->ip);
+ session->port = ep->port;
+
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ return VPPCOM_OK;
+}
+
+int
+vppcom_session_listen (uint32_t listen_session_index, uint32_t q_len)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ session_t *listen_session = 0;
+ int rv;
+
+ clib_spinlock_lock (&vcm->sessions_lockp);
+ rv = vppcom_session_at_index (listen_session_index, &listen_session);
+ if (PREDICT_FALSE (rv))
+ {
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] invalid session, sid (%d) has been closed!",
+ vcm->my_pid, listen_session_index);
+ return rv;
+ }
+
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] sid %d", vcm->my_pid, listen_session_index);
+
+ ASSERT (vcm->bind_session_index == ~0);
+ vcm->bind_session_index = listen_session_index;
+ vppcom_send_bind_sock (listen_session);
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ rv =
+ vppcom_wait_for_session_state_change (listen_session_index, STATE_LISTEN,
+ vcm->cfg.session_timeout);
+ if (PREDICT_FALSE (rv))
+ {
+ vcm->bind_session_index = ~0;
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] server listen timed out, rv = %d (%d)",
+ vcm->my_pid, vppcom_retval_str (rv), rv);
+ return rv;
+ }
+
+ clib_spinlock_lock (&vcm->sessions_lockp);
+ rv = vppcom_session_at_index (listen_session_index, &listen_session);
+ if (PREDICT_FALSE (rv))
+ {
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] invalid session, sid (%d) has been closed!",
+ vcm->my_pid, listen_session_index);
+ return rv;
+ }
+ listen_session->is_listen = 1;
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ clib_fifo_validate (vcm->client_session_index_fifo, q_len);
+
+ return VPPCOM_OK;
+}
+
+int
+vppcom_session_accept (uint32_t listen_session_index, vppcom_endpt_t * ep,
+ double wait_for_time)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ session_t *listen_session = 0;
+ session_t *client_session = 0;
+ u32 client_session_index;
+ int rv;
+ f64 wait_for;
+
+ clib_spinlock_lock (&vcm->sessions_lockp);
+ rv = vppcom_session_at_index (listen_session_index, &listen_session);
+ if (PREDICT_FALSE (rv))
+ {
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] invalid session, sid (%d) has been closed!",
+ vcm->my_pid, listen_session_index);
+ return rv;
+ }
+
+ if (listen_session->state != STATE_LISTEN)
+ {
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] session not in listen state, state = %s",
+ vcm->my_pid,
+ vppcom_session_state_str (listen_session->state));
+ return VPPCOM_EBADFD;
+ }
+ wait_for = listen_session->is_nonblocking ? 0 :
+ (wait_for_time < 0) ? vcm->cfg.accept_timeout : wait_for_time;
+
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] sid %d: %s (%d)", vcm->my_pid,
+ listen_session_index,
+ vppcom_session_state_str (listen_session->state),
+ listen_session->state);
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+
+ while (1)
+ {
+ rv = vppcom_wait_for_client_session_index (wait_for);
+ if (rv)
+ {
+ if ((VPPCOM_DEBUG > 0))
+ clib_warning ("[%d] sid %d, accept timed out, rv = %s (%d)",
+ vcm->my_pid, listen_session_index,
+ vppcom_retval_str (rv), rv);
+ if ((wait_for == 0) || (wait_for_time > 0))
+ return rv;
+ }
+ else
+ break;
+ }
+
+ clib_fifo_sub1 (vcm->client_session_index_fifo, client_session_index);
+
+ clib_spinlock_lock (&vcm->sessions_lockp);
+ rv = vppcom_session_at_index (client_session_index, &client_session);
+ ASSERT (rv == VPPCOM_OK);
+ ASSERT (client_session->is_ip4 == listen_session->is_ip4);
+
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] Got a request: client sid %d", vcm->my_pid,
+ client_session_index);
+
+ ep->vrf = client_session->vrf;
+ ep->is_cut_thru = client_session->is_cut_thru;
+ ep->is_ip4 = client_session->is_ip4;
+ ep->port = client_session->port;
+ if (client_session->is_ip4)
+ clib_memcpy (ep->ip, client_session->ip, sizeof (ip4_address_t));
+ else
+ clib_memcpy (ep->ip, client_session->ip, sizeof (ip6_address_t));
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ return (int) client_session_index;
+}
+
+int
+vppcom_session_connect (uint32_t session_index, vppcom_endpt_t * server_ep)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ session_t *session = 0;
+ int rv;
+ ip46_address_t *ip46;
+
+ clib_spinlock_lock (&vcm->sessions_lockp);
+ rv = vppcom_session_at_index (session_index, &session);
+ if (PREDICT_FALSE (rv))
+ {
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] invalid session, sid (%d) has been closed!",
+ vcm->my_pid, session_index);
+ return rv;
+ }
+
+ if (session->state == STATE_CONNECT)
+ {
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] session, sid (%d) already connected!",
+ vcm->my_pid, session_index);
+ return VPPCOM_OK;
+ }
+
+ session->vrf = server_ep->vrf;
+ session->is_ip4 = server_ep->is_ip4;
+ memset (session->ip, 0, sizeof (session->ip));
+ ip46 = (ip46_address_t *) session->ip;
+ *ip46 = to_ip46 (!server_ep->is_ip4, server_ep->ip);
+ session->port = server_ep->port;
+
+ if (VPPCOM_DEBUG > 0)
+ {
+ u8 *ip_str = format (0, "%U", format_ip46_address,
+ &session->ip, session->is_ip4);
+ clib_warning ("[%d] connect sid %d to %s server port %d",
+ vcm->my_pid, session_index, ip_str,
+ clib_net_to_host_u16 (session->port));
+ vec_free (ip_str);
+ }
+
+ vppcom_send_connect_sock (session, session_index);
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ rv = vppcom_wait_for_session_state_change (session_index, STATE_CONNECT,
+ vcm->cfg.session_timeout);
+ if (PREDICT_FALSE (rv))
+ {
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] connect timed out, rv = %s (%d)",
+ vcm->my_pid, vppcom_retval_str (rv), rv);
+ return rv;
+ }
+ return VPPCOM_OK;
+}
+
+int
+vppcom_session_read (uint32_t session_index, void *buf, int n)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ session_t *session = 0;
+ svm_fifo_t *rx_fifo;
+ int n_read = 0;
+ int rv;
+ int max_dequeue;
+ char *fifo_str;
+
+ ASSERT (buf);
+
+ clib_spinlock_lock (&vcm->sessions_lockp);
+ rv = vppcom_session_at_index (session_index, &session);
+ if (PREDICT_FALSE (rv))
+ {
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] invalid session, sid (%d) has been closed!",
+ vcm->my_pid, session_index);
+ return rv;
+ }
+
+ if (session->state == STATE_DISCONNECT)
+ {
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] sid (%d) has been closed by remote peer!",
+ vcm->my_pid, session_index);
+ return VPPCOM_ECONNRESET;
+ }
+
+ rx_fifo = ((!session->is_cut_thru || session->is_server) ?
+ session->server_rx_fifo : session->server_tx_fifo);
+ fifo_str = ((!session->is_cut_thru || session->is_server) ?
+ "server_rx_fifo" : "server_tx_fifo");
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+
+ max_dequeue = (int) svm_fifo_max_dequeue (rx_fifo);
+ n_read = svm_fifo_dequeue_nowait (rx_fifo, clib_min (n, max_dequeue), buf);
+
+ if (VPPCOM_DEBUG > 2)
+ clib_warning ("[%d] sid %d, read %d bytes from %s (%p)", vcm->my_pid,
+ session_index, n_read, fifo_str, rx_fifo);
+
+ return (n_read <= 0) ? VPPCOM_EAGAIN : n_read;
+}
+
+static inline int
+vppcom_session_read_ready (session_t * session, u32 session_index)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ svm_fifo_t *rx_fifo;
+ int ready = 0;
+
+ /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
+ if (session->state == STATE_DISCONNECT)
+ {
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] sid (%d) has been closed by remote peer!",
+ vcm->my_pid, session_index);
+ return VPPCOM_ECONNRESET;
+ }
+
+ if (session->is_listen)
+ ready = clib_fifo_elts (vcm->client_session_index_fifo);
+ else
+ {
+ rx_fifo = ((!session->is_cut_thru || session->is_server) ?
+ session->server_rx_fifo : session->server_tx_fifo);
+
+ ready = svm_fifo_max_dequeue (rx_fifo);
+ }
+
+ if (VPPCOM_DEBUG > 3)
+ clib_warning ("[%d] sid %d, peek %s (%p), ready = %d", vcm->my_pid,
+ session_index,
+ session->is_server ? "server_rx_fifo" : "server_tx_fifo",
+ rx_fifo, ready);
+ return ready;
+}
+
+int
+vppcom_session_write (uint32_t session_index, void *buf, int n)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ session_t *session = 0;
+ svm_fifo_t *tx_fifo;
+ unix_shared_memory_queue_t *q;
+ session_fifo_event_t evt;
+ int rv;
+ char *fifo_str;
+ u8 is_nonblocking;
+
+ ASSERT (buf);
+
+ clib_spinlock_lock (&vcm->sessions_lockp);
+ rv = vppcom_session_at_index (session_index, &session);
+ if (PREDICT_FALSE (rv))
+ {
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] invalid session, sid (%d) has been closed!",
+ vcm->my_pid, session_index);
+ return rv;
+ }
+
+ if (session->state == STATE_DISCONNECT)
+ {
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] sid (%d) has been closed by remote peer!",
+ vcm->my_pid, session_index);
+ return VPPCOM_ECONNRESET;
+ }
+
+ tx_fifo = ((!session->is_cut_thru || session->is_server) ?
+ session->server_tx_fifo : session->server_rx_fifo);
+ fifo_str = ((!session->is_cut_thru || session->is_server) ?
+ "server_tx_fifo" : "server_rx_fifo");
+
+ is_nonblocking = session->is_nonblocking;
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+
+ do
+ {
+ rv = svm_fifo_enqueue_nowait (tx_fifo, n, buf);
+ }
+ while (!is_nonblocking && (rv <= 0));
+
+ /* If event wasn't set, add one */
+ if (!session->is_cut_thru && (rv > 0) && svm_fifo_set_event (tx_fifo))
+ {
+ int rval;
+
+ /* Fabricate TX event, send to vpp */
+ evt.fifo = tx_fifo;
+ evt.event_type = FIFO_EVENT_APP_TX;
+ evt.event_id = vcm->tx_event_id++;
+
+ clib_spinlock_lock (&vcm->sessions_lockp);
+ rval = vppcom_session_at_index (session_index, &session);
+ if (PREDICT_FALSE (rval))
+ {
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ if (VPPCOM_DEBUG > 1)
+ clib_warning ("[%d] invalid session, sid (%d) has been closed!",
+ vcm->my_pid, session_index);
+ return rval;
+ }
+ q = session->vpp_event_queue;
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ ASSERT (q);
+ unix_shared_memory_queue_add (q, (u8 *) & evt,
+ 0 /* do wait for mutex */ );
+ }
+
+ if (VPPCOM_DEBUG > 2)
+ clib_warning ("[%d] sid %d, wrote %d bytes to %s (%p)", vcm->my_pid,
+ session_index, rv, fifo_str, tx_fifo);
+
+ return rv;
+}
+
+static inline int
+vppcom_session_write_ready (session_t * session, u32 session_index)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ svm_fifo_t *tx_fifo;
+ char *fifo_str;
+ int rv;
+
+ /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
+ if (session->state == STATE_DISCONNECT)
+ {
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] sid (%d) has been closed by remote peer!",
+ vcm->my_pid, session_index);
+ return VPPCOM_ECONNRESET;
+ }
+
+ tx_fifo = ((!session->is_cut_thru || session->is_server) ?
+ session->server_tx_fifo : session->server_rx_fifo);
+ fifo_str = ((!session->is_cut_thru || session->is_server) ?
+ "server_tx_fifo" : "server_rx_fifo");
+
+ rv = svm_fifo_max_enqueue (tx_fifo);
+
+ if (VPPCOM_DEBUG > 3)
+ clib_warning ("[%d] sid %d, peek %s (%p), ready = %d", vcm->my_pid,
+ session_index, fifo_str, tx_fifo, rv);
+ return rv;
+}
+
+int
+vppcom_select (unsigned long n_bits, unsigned long *read_map,
+ unsigned long *write_map, unsigned long *except_map,
+ double time_to_wait)
+{
+ vppcom_main_t *vcm = &vppcom_main;
+ u32 session_index;
+ session_t *session = 0;
+ int rv, bits_set = 0;
+ f64 timeout = clib_time_now (&vcm->clib_time) + time_to_wait;
+ u32 minbits = clib_max (n_bits, BITS (uword));
+
+ ASSERT (sizeof (clib_bitmap_t) == sizeof (long int));
+
+ if (read_map)
+ {
+ clib_bitmap_validate (vcm->rd_bitmap, minbits);
+ clib_memcpy (vcm->rd_bitmap, read_map, vec_len (vcm->rd_bitmap));
+ memset (read_map, 0, vec_len (vcm->rd_bitmap));
+ }
+ if (write_map)
+ {
+ clib_bitmap_validate (vcm->wr_bitmap, minbits);
+ clib_memcpy (vcm->wr_bitmap, write_map, vec_len (vcm->wr_bitmap));
+ memset (write_map, 0, vec_len (vcm->wr_bitmap));
+ }
+ if (except_map)
+ {
+ clib_bitmap_validate (vcm->ex_bitmap, minbits);
+ clib_memcpy (vcm->ex_bitmap, except_map, vec_len (vcm->ex_bitmap));
+ memset (except_map, 0, vec_len (vcm->ex_bitmap));
+ }
+
+ do
+ {
+ /* *INDENT-OFF* */
+ clib_bitmap_foreach (session_index, vcm->rd_bitmap,
+ ({
+ clib_spinlock_lock (&vcm->sessions_lockp);
+ rv = vppcom_session_at_index (session_index, &session);
+ if (rv < 0)
+ {
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ if (VPPCOM_DEBUG > 1)
+ clib_warning ("[%d] session %d specified in "
+ "read_map is closed.", vcm->my_pid,
+ session_index);
+ bits_set = VPPCOM_EBADFD;
+ goto select_done;
+ }
+
+ rv = vppcom_session_read_ready (session, session_index);
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ if (vcm->ex_bitmap &&
+ clib_bitmap_get (vcm->ex_bitmap, session_index) && (rv < 0))
+ {
+ // TBD: clib_warning
+ /* coverity[FORWARD_NULL] */
+ clib_bitmap_set_no_check (except_map, session_index, 1);
+ bits_set++;
+ }
+ else if (rv > 0)
+ {
+ // TBD: clib_warning
+ /* coverity[FORWARD_NULL] */
+ clib_bitmap_set_no_check (read_map, session_index, 1);
+ bits_set++;
+ }
+ }));
+
+ clib_bitmap_foreach (session_index, vcm->wr_bitmap,
+ ({
+ clib_spinlock_lock (&vcm->sessions_lockp);
+ rv = vppcom_session_at_index (session_index, &session);
+ if (rv < 0)
+ {
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ if (VPPCOM_DEBUG > 0)
+ clib_warning ("[%d] session %d specified in "
+ "write_map is closed.", vcm->my_pid,
+ session_index);
+ bits_set = VPPCOM_EBADFD;
+ goto select_done;
+ }
+
+ rv = vppcom_session_write_ready (session, session_index);
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ if (rv > 0 )
+ {
+ // TBD: clib_warning
+ /* coverity[FORWARD_NULL] */
+ clib_bitmap_set_no_check (write_map, session_index, 1);
+ bits_set++;
+ }
+ }));
+
+ clib_bitmap_foreach (session_index, vcm->ex_bitmap,
+ ({
+ clib_spinlock_lock (&vcm->sessions_lockp);
+ rv = vppcom_session_at_index (session_index, &session);
+ if (rv < 0)
+ {
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ if (VPPCOM_DEBUG > 1)
+ clib_warning ("[%d] session %d specified in "
+ "except_map is closed.", vcm->my_pid,
+ session_index);
+ bits_set = VPPCOM_EBADFD;
+ goto select_done;
+ }
+
+ rv = vppcom_session_read_ready (session, session_index);
+ clib_spinlock_unlock (&vcm->sessions_lockp);
+ if (rv < 0)
+ {
+ // TBD: clib_warning
+ /* coverity[FORWARD_NULL] */
+ clib_bitmap_set_no_check (except_map, session_index, 1);
+ bits_set++;
+ }
+ }));
+ /* *INDENT-ON* */
+ }
+ while (clib_time_now (&vcm->clib_time) < timeout);
+
+select_done:
+ return (bits_set);
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */