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-rw-r--r--vpp/vpp-api/python/pneum/pneum.c259
-rw-r--r--vpp/vpp-api/python/pneum/pneum.h31
-rw-r--r--vpp/vpp-api/python/pneum/test_pneum.c143
3 files changed, 433 insertions, 0 deletions
diff --git a/vpp/vpp-api/python/pneum/pneum.c b/vpp/vpp-api/python/pneum/pneum.c
new file mode 100644
index 00000000..6918cc9b
--- /dev/null
+++ b/vpp/vpp-api/python/pneum/pneum.c
@@ -0,0 +1,259 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * 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 <stddef.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <netinet/in.h>
+#include <netdb.h>
+#include <signal.h>
+#include <setjmp.h>
+#include <stdbool.h>
+
+#include <vnet/vnet.h>
+#include <vlib/vlib.h>
+#include <vlib/unix/unix.h>
+#include <vlibapi/api.h>
+#include <vlibmemory/api.h>
+
+#include <vpp-api/vpe_msg_enum.h>
+
+#include "pneum.h"
+
+#define vl_typedefs /* define message structures */
+#include <vpp-api/vpe_all_api_h.h>
+#undef vl_typedefs
+
+#define vl_endianfun /* define message structures */
+#include <vpp-api/vpe_all_api_h.h>
+#undef vl_endianfun
+
+vlib_main_t vlib_global_main;
+vlib_main_t **vlib_mains;
+
+typedef struct {
+ u8 rx_thread_jmpbuf_valid;
+ u8 connected_to_vlib;
+ jmp_buf rx_thread_jmpbuf;
+ pthread_t rx_thread_handle;
+} pneum_main_t;
+
+pneum_main_t pneum_main;
+
+pneum_callback_t pneum_callback;
+
+/*
+ * Satisfy external references when -lvlib is not available.
+ */
+void vlib_cli_output (struct vlib_main_t * vm, char * fmt, ...)
+{
+ clib_warning ("vlib_cli_output called...");
+}
+
+void
+pneum_free (void * msg)
+{
+ vl_msg_api_free (msg);
+}
+
+static void
+pneum_api_handler (void *msg)
+{
+ u16 id = ntohs(*((u16 *)msg));
+ if (id == VL_API_RX_THREAD_EXIT) {
+ pneum_main_t *pm = &pneum_main;
+ vl_msg_api_free(msg);
+ longjmp(pm->rx_thread_jmpbuf, 1);
+ }
+ msgbuf_t *msgbuf = (msgbuf_t *)(((u8 *)msg) - offsetof(msgbuf_t, data));
+ int l = ntohl(msgbuf->data_len);
+ if (l == 0)
+ clib_warning("Message ID %d has wrong length: %d\n", id, l);
+
+ /* Call Python callback */
+ ASSERT(pneum_callback);
+ (pneum_callback)(msg, l);
+ pneum_free(msg);
+}
+
+static void *
+pneum_rx_thread_fn (void *arg)
+{
+ unix_shared_memory_queue_t *q;
+ pneum_main_t *pm = &pneum_main;
+ api_main_t *am = &api_main;
+ uword msg;
+
+ q = am->vl_input_queue;
+
+ /* So we can make the rx thread terminate cleanly */
+ if (setjmp(pm->rx_thread_jmpbuf) == 0) {
+ pm->rx_thread_jmpbuf_valid = 1;
+ while (1)
+ while (!unix_shared_memory_queue_sub(q, (u8 *)&msg, 0))
+ pneum_api_handler((void *)msg);
+ }
+ pthread_exit(0);
+}
+
+uword *
+pneum_msg_table_get_hash (void)
+{
+ api_main_t *am = &api_main;
+ return (am->msg_index_by_name_and_crc);
+}
+
+int
+pneum_msg_table_size(void)
+{
+ api_main_t *am = &api_main;
+ return hash_elts(am->msg_index_by_name_and_crc);
+}
+
+int
+pneum_connect (char * name, char * chroot_prefix, pneum_callback_t cb)
+{
+ int rv = 0;
+ pneum_main_t *pm = &pneum_main;
+
+ if (chroot_prefix != NULL)
+ vl_set_memory_root_path (chroot_prefix);
+
+ if ((rv = vl_client_api_map("/vpe-api"))) {
+ clib_warning ("vl_client_api map rv %d", rv);
+ return rv;
+ }
+
+ if (vl_client_connect(name, 0, 32) < 0) {
+ vl_client_api_unmap();
+ return (-1);
+ }
+
+ if (cb) {
+ /* Start the rx queue thread */
+ rv = pthread_create(&pm->rx_thread_handle, NULL, pneum_rx_thread_fn, 0);
+ if (rv) {
+ clib_warning("pthread_create returned %d", rv);
+ vl_client_api_unmap();
+ return (-1);
+ }
+ pneum_callback = cb;
+ }
+
+ pm->connected_to_vlib = 1;
+
+ return (0);
+}
+
+int
+pneum_disconnect (void)
+{
+ api_main_t *am = &api_main;
+ pneum_main_t *pm = &pneum_main;
+
+ if (pm->rx_thread_jmpbuf_valid) {
+ vl_api_rx_thread_exit_t *ep;
+ uword junk;
+ ep = vl_msg_api_alloc (sizeof (*ep));
+ ep->_vl_msg_id = ntohs(VL_API_RX_THREAD_EXIT);
+ vl_msg_api_send_shmem(am->vl_input_queue, (u8 *)&ep);
+ pthread_join(pm->rx_thread_handle, (void **) &junk);
+ }
+ if (pm->connected_to_vlib) {
+ vl_client_disconnect();
+ vl_client_api_unmap();
+ pneum_callback = 0;
+ }
+ memset (pm, 0, sizeof (*pm));
+
+ return (0);
+}
+
+int
+pneum_read (char **p, int *l)
+{
+ unix_shared_memory_queue_t *q;
+ api_main_t *am = &api_main;
+ pneum_main_t *pm = &pneum_main;
+ uword msg;
+
+ if (!pm->connected_to_vlib) return -1;
+
+ *l = 0;
+
+ if (am->our_pid == 0) return (-1);
+
+ q = am->vl_input_queue;
+ int rv = unix_shared_memory_queue_sub(q, (u8 *)&msg, 0);
+ if (rv == 0) {
+ u16 msg_id = ntohs(*((u16 *)msg));
+ msgbuf_t *msgbuf = (msgbuf_t *)(((u8 *)msg) - offsetof(msgbuf_t, data));
+ *l = ntohl(msgbuf->data_len);
+ if (*l == 0) {
+ printf("Unregistered API message: %d\n", msg_id);
+ return (-1);
+ }
+ *p = (char *)msg;
+ } else {
+ printf("Read failed with %d\n", rv);
+ }
+ return (rv);
+}
+
+/*
+ * XXX: Makes the assumption that client_index is the first member
+ */
+typedef VL_API_PACKED(struct _vl_api_header {
+ u16 _vl_msg_id;
+ u32 client_index;
+}) vl_api_header_t;
+
+static unsigned int
+pneum_client_index (void)
+{
+ return (api_main.my_client_index);
+}
+
+int
+pneum_write (char *p, int l)
+{
+ int rv = -1;
+ api_main_t *am = &api_main;
+ vl_api_header_t *mp = vl_msg_api_alloc(l);
+ unix_shared_memory_queue_t *q;
+ pneum_main_t *pm = &pneum_main;
+
+ if (!pm->connected_to_vlib) return -1;
+ if (!mp) return (-1);
+ memcpy(mp, p, l);
+ mp->client_index = pneum_client_index();
+ q = am->shmem_hdr->vl_input_queue;
+ rv = unix_shared_memory_queue_add(q, (u8 *)&mp, 0);
+ if (rv != 0) {
+ printf("vpe_api_write fails: %d\n", rv);
+ /* Clear message */
+ pneum_free(mp);
+ }
+ return (rv);
+}
+
+uint32_t
+pneum_get_msg_index (unsigned char * name)
+{
+ return vl_api_get_msg_index (name);
+}
diff --git a/vpp/vpp-api/python/pneum/pneum.h b/vpp/vpp-api/python/pneum/pneum.h
new file mode 100644
index 00000000..a347bd25
--- /dev/null
+++ b/vpp/vpp-api/python/pneum/pneum.h
@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * 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.
+ */
+#ifndef included_pneum_h
+#define included_pneum_h
+
+#include <stdint.h>
+#include <vppinfra/types.h>
+
+typedef void (*pneum_callback_t)(unsigned char * data, int len);
+int pneum_connect(char * name, char * chroot_prefix, pneum_callback_t cb);
+int pneum_disconnect(void);
+int pneum_read(char **data, int *l);
+int pneum_write(char *data, int len);
+void pneum_free(void * msg);
+uword * pneum_msg_table_get_hash (void);
+int pneum_msg_table_size(void);
+uint32_t pneum_get_msg_index(unsigned char * name);
+
+#endif
diff --git a/vpp/vpp-api/python/pneum/test_pneum.c b/vpp/vpp-api/python/pneum/test_pneum.c
new file mode 100644
index 00000000..e873114f
--- /dev/null
+++ b/vpp/vpp-api/python/pneum/test_pneum.c
@@ -0,0 +1,143 @@
+/*
+ *------------------------------------------------------------------
+ * test_pneum.c
+ *
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * 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 <sys/types.h>
+#include <sys/socket.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <netinet/in.h>
+#include <netdb.h>
+
+#include <time.h> /* time_t, time (for timestamp in second) */
+#include <sys/timeb.h> /* ftime, timeb (for timestamp in millisecond) */
+#include <sys/time.h> /* gettimeofday, timeval (for timestamp in microsecond) */
+
+#include <vnet/vnet.h>
+#include <vlib/vlib.h>
+#include <vlib/unix/unix.h>
+#include <vlibapi/api.h>
+#include <vlibmemory/api.h>
+#include <vnet/ip/ip.h>
+
+#include <vpp-api/vpe_msg_enum.h>
+#include <signal.h>
+#include <setjmp.h>
+#include "pneum.h"
+
+#define vl_typedefs /* define message structures */
+#include <vpp-api/vpe_all_api_h.h>
+#undef vl_typedefs
+
+/* we are not linking with vlib */
+vlib_main_t vlib_global_main;
+vlib_main_t **vlib_mains;
+
+volatile int sigterm_received = 0;
+volatile u32 result_ready;
+volatile u16 result_msg_id;
+
+/* M_NOALLOC: construct, but don't yet send a message */
+
+#define M_NOALLOC(T,t) \
+ do { \
+ result_ready = 0; \
+ memset (mp, 0, sizeof (*mp)); \
+ mp->_vl_msg_id = ntohs (VL_API_##T); \
+ mp->client_index = am->my_client_index; \
+ } while(0);
+
+
+
+int
+wrap_pneum_callback (char *data, int len)
+{
+ //printf("Callback %d\n", len);
+ result_ready = 1;
+ result_msg_id = ntohs(*((u16 *)data));
+ return (0);
+}
+
+int main (int argc, char ** argv)
+{
+ api_main_t * am = &api_main;
+ vl_api_show_version_t message;
+ vl_api_show_version_t *mp;
+ int async = 1;
+ int rv = pneum_connect("pneum_client", NULL, NULL);
+
+ if (rv != 0) {
+ printf("Connect failed: %d\n", rv);
+ exit(rv);
+ }
+
+ struct timeb timer_msec;
+ long long int timestamp_msec_start; /* timestamp in millisecond. */
+ if (!ftime(&timer_msec)) {
+ timestamp_msec_start = ((long long int) timer_msec.time) * 1000ll +
+ (long long int) timer_msec.millitm;
+ }
+ else {
+ timestamp_msec_start = -1;
+ }
+
+
+ /*
+ * Test vpe_api_write and vpe_api_read to send and recv message for an
+ * API
+ */
+ int i;
+ long int no_msgs = 10000;
+ mp = &message;
+
+ for (i = 0; i < no_msgs; i++) {
+ /* Construct the API message */
+ M_NOALLOC(SHOW_VERSION, show_version);
+ pneum_write((char *)mp, sizeof(*mp));
+#ifndef __COVERITY__
+ /* As given, async is always 1. Shut up Coverity about it */
+ if (!async)
+ while (result_ready == 0);
+#endif
+ }
+ if (async) {
+ vl_api_control_ping_t control;
+ vl_api_control_ping_t *mp;
+ mp = &control;
+ M_NOALLOC(CONTROL_PING, control_ping);
+ pneum_write((char *)mp, sizeof(*mp));
+
+ while (result_msg_id != VL_API_CONTROL_PING_REPLY);
+ }
+
+ long long int timestamp_msec_end; /* timestamp in millisecond. */
+ if (!ftime(&timer_msec)) {
+ timestamp_msec_end = ((long long int) timer_msec.time) * 1000ll +
+ (long long int) timer_msec.millitm;
+ }
+ else {
+ timestamp_msec_end = -1;
+ }
+
+ printf("Took %lld msec, %lld msgs/msec \n", (timestamp_msec_end - timestamp_msec_start),
+ no_msgs/(timestamp_msec_end - timestamp_msec_start));
+ fformat(stdout, "Exiting...\n");
+ pneum_disconnect();
+ exit (0);
+}