Sweetcomb global cleanup

-Merge IETF and Openconfig to use SCVPP 2
-Move L2 bridge from sc_vpp_interface to sc_vpp_v3po
-Implement tav2 dump
-Make openconfig-interfaces functions static
-Try one more dispatch after failure in VAPI_CALL
-Add error return code for scvpp
-Remove unused length maccros
-Return appropriate error code for interface dump when interface not found
-Improve scvpp test suite
-Change get_interface_id prototype
-Use interface_dump_iface in openconfig_interface.
-No more vapi types in openconfig_interfaces.c
-Move openconfig_local_routing VAPI operations to sc_vpp_ip
-Implement a multiple dump with a stack data structure
-Comment out state_cb code from openconfig_local_routing to use new
functions later.
-Rename YANG model to their fully qualified name : <module>@<revision>
-Remove headers almost empty and put registration declaration in
sc_model.h
-Shorten vapi context global variable name
-Reorganize scvpp unit test suite
-Add instructions to Makefile to install/uninstall YANG models in sysrepo.
-Add this new instructions to README.md.
-Reimplement interface_dump_all
-Use a common message at INFO Log Level to know when sysrepo callbacks
are triggered
-Remove old structure to perform dump of all interfaces
-Reimplement get_interface_name and add scvpp test for it
-Clean sys_util
-Use UNUSED maccro everywhere to have lighter prototypes
-Have ietf-interfaces:interfaces-state work with new dump function
-Add setup and teardown for NAT tests
-Remove unused tapv2 dump
-Remove useless sysrepo module callback
-Remove xpath_find_first_key usage in openconfig-interfaces
-Remove xpath_find_first_key in oc_local_routing and in the rest of
sweetcomb
-Reorganize scvpp include dir and fix scvpp_test new warnings
-Fix scvpp tests for ip routes
-Factorize scvpp nat and test return code of its function
-Correct test_dump_if_all if there is an existing hardware interface
-Implement a per-prefix dump in scvpp
-free changes iterator in ietf-interfaces
-Add new XPATH in oc local-routing
-Introduce helper methods for sysrepo config callbacks
-Factorize config callback
-Refactor the openconfig-local-routing config callback
-Use common foreach_change to iterate over changes in all models
-Create a sample directory gathering example of configurations supposed
to work with sweetcomb
-Fix state callback of oc-local-routing
-Add new sample for get operation on next-hop
-foreach_elt maccro condition forgets to read one element

Change-Id: I8e87fce577a00337977588f057a6e095a20f457c
Signed-off-by: YohanPipereau <ypiperea@cisco.com>

1 files changed, 113 insertions, 0 deletions

diff --git a/src/scvpp/src/comm.c b/src/scvpp/src/comm.c
new file mode 100644
index 0000000..a065b58
--- /dev/null
+++ b/src/scvpp/src/comm.c
@@ -0,0 +1,113 @@
+/*
+ * Copyright (c) 2018 HUACHENTEL 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 <scvpp/comm.h>
+
+#include <assert.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+#define APP_NAME "sweetcomb_vpp"
+#define MAX_OUTSTANDING_REQUESTS 4
+#define RESPONSE_QUEUE_SIZE 2
+
+vapi_ctx_t g_vapi_ctx = NULL;
+vapi_mode_e g_vapi_mode = VAPI_MODE_NONBLOCKING;
+
+int sc_connect_vpp()
+{
+    if (g_vapi_ctx == NULL)
+    {
+        vapi_error_e rv = vapi_ctx_alloc(&g_vapi_ctx);
+        rv = vapi_connect(g_vapi_ctx, APP_NAME, NULL,
+                          MAX_OUTSTANDING_REQUESTS, RESPONSE_QUEUE_SIZE,
+                          VAPI_MODE_BLOCKING, true);
+        if (rv != VAPI_OK)
+        {
+            vapi_ctx_free(g_vapi_ctx);
+            g_vapi_ctx = NULL;
+            return -1;
+        }
+    }
+
+    return 0;
+}
+
+int sc_disconnect_vpp()
+{
+    if (NULL != g_vapi_ctx)
+    {
+        vapi_disconnect(g_vapi_ctx);
+        vapi_ctx_free(g_vapi_ctx);
+        g_vapi_ctx = NULL;
+    }
+    return 0;
+}
+
+int sc_end_with(const char* str, const char* end)
+{
+    if (str != NULL && end != NULL)
+    {
+        int l1 = strlen(str);
+        int l2 = strlen(end);
+        if (l1 >= l2)
+        {
+            if (strcmp(str + l1 - l2, end) == 0)
+                return 1;
+        }
+    }
+    return 0;
+}
+
+int sc_aton(const char *cp, u8 * buf, size_t length)
+{
+    ARG_CHECK2(false, cp, buf);
+
+    struct in_addr addr;
+    int ret = inet_aton(cp, &addr);
+
+    if (0 == ret)
+        return -EINVAL;
+
+    if (sizeof(addr) > length)
+        return -EINVAL;
+
+    memcpy(buf, &addr, sizeof (addr));
+
+    return 0;
+}
+
+char* sc_ntoa(const u8 * buf)
+{
+    ARG_CHECK(NULL, buf);
+
+    struct in_addr addr;
+    memcpy(&addr, buf, sizeof(addr));
+    return inet_ntoa(addr);
+}
+
+/**
+ * @brief Function converts the u8 array from network byte order to host byte order.
+ *
+ * @param[in] host IPv4 address.
+ * @return host byte order value.
+ */
+uint32_t hardntohlu32(uint8_t host[4])
+{
+    uint32_t tmp = host[3] | host[2] | host[1] | host[0];
+
+    return ntohl(tmp);
+}