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, 176 insertions, 0 deletions

diff --git a/src/scvpp/src/interface.c b/src/scvpp/src/interface.c
new file mode 100644
index 0000000..53cea1c
--- /dev/null
+++ b/src/scvpp/src/interface.c
@@ -0,0 +1,176 @@
+/*
+ * Copyright (c) 2018 PANTHEON.tech.
+ *
+ * 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 <assert.h>
+#include <stdbool.h>
+
+#include <scvpp/comm.h>
+#include <scvpp/interface.h>
+
+// Use VAPI macros to define symbols
+DEFINE_VAPI_MSG_IDS_INTERFACE_API_JSON
+
+static vapi_error_e
+sw_interface_dump_cb(struct vapi_ctx_s *ctx, void *callback_ctx,
+                     vapi_error_e rv, bool is_last,
+                     vapi_payload_sw_interface_details *reply)
+{
+    UNUSED(rv); UNUSED(ctx); UNUSED(is_last);
+
+    vapi_payload_sw_interface_details *passed;
+
+    ARG_CHECK2(VAPI_EINVAL, callback_ctx, reply);
+
+    //copy
+    passed = (vapi_payload_sw_interface_details *) callback_ctx;
+    *passed = *reply;
+
+    return VAPI_OK;
+}
+
+static vapi_error_e
+bin_api_sw_interface_dump(vapi_payload_sw_interface_details *details,
+                           const char *iface_name)
+{
+    vapi_msg_sw_interface_dump *mp;
+    vapi_error_e rv;
+
+    mp = vapi_alloc_sw_interface_dump(g_vapi_ctx);
+    assert(NULL != mp);
+
+    /* Dump a specific interfaces */
+    mp->payload.name_filter_valid = true;
+    strncpy((char *)mp->payload.name_filter, iface_name, VPP_INTFC_NAME_LEN);
+
+    VAPI_CALL(vapi_sw_interface_dump(g_vapi_ctx, mp,
+                                     sw_interface_dump_cb, details));
+    if (rv != VAPI_OK)
+        return -SCVPP_EINVAL;
+
+    return rv;
+}
+
+int get_interface_id(const char *if_name, uint32_t *sw_if_index)
+{
+    vapi_payload_sw_interface_details details = {0};
+    vapi_error_e rv;
+
+    ARG_CHECK2(-SCVPP_EINVAL, if_name, sw_if_index);
+
+    rv = bin_api_sw_interface_dump(&details, if_name);
+    if (rv != VAPI_OK)
+        return -SCVPP_EINVAL;
+
+    if (strncmp(if_name, (char*) details.interface_name, VPP_INTFC_NAME_LEN)
+        != 0)
+        return -SCVPP_NOT_FOUND;
+
+    *sw_if_index = details.sw_if_index;
+
+    return 0;
+}
+
+/*
+ * dump only a specific interface
+ */
+int interface_dump_iface(sw_interface_dump_t *details, const char *iface_name)
+{
+    vapi_error_e rv;
+
+    rv = bin_api_sw_interface_dump(details, iface_name);
+    if (rv != VAPI_OK)
+        return -SCVPP_EINVAL;
+
+    if (strncmp(iface_name, (char*) details->interface_name, VPP_INTFC_NAME_LEN)
+        != 0)
+        return -SCVPP_NOT_FOUND;
+
+    return SCVPP_OK;
+}
+
+VAPI_DUMP_LIST_CB(sw_interface)
+
+struct elt* interface_dump_all()
+{
+    struct elt* stack = NULL;
+    vapi_msg_sw_interface_dump *mp;
+    vapi_error_e rv;
+
+    mp = vapi_alloc_sw_interface_dump(g_vapi_ctx);
+
+    /* Dump all */
+    mp->payload.name_filter_valid = false;
+    memset(mp->payload.name_filter, 0, sizeof(mp->payload.name_filter));
+
+    VAPI_CALL(vapi_sw_interface_dump(g_vapi_ctx, mp, sw_interface_all_cb,
+                                     &stack));
+    if (VAPI_OK != rv)
+        return NULL;
+
+    return stack;
+}
+
+VAPI_RETVAL_CB(sw_interface_set_flags);
+
+int interface_enable(const char *interface_name, const bool enable)
+{
+    vapi_msg_sw_interface_set_flags *mp;
+    uint32_t sw_if_index;
+    vapi_error_e rv;
+    int rc;
+
+    ARG_CHECK(-SCVPP_EINVAL, interface_name);
+
+    rc = get_interface_id(interface_name, &sw_if_index);
+    if (rc != 0)
+        return -SCVPP_NOT_FOUND;
+
+    mp = vapi_alloc_sw_interface_set_flags(g_vapi_ctx);
+    assert(NULL != mp);
+    mp->payload.sw_if_index = sw_if_index;
+    mp->payload.admin_up_down = enable;
+
+    VAPI_CALL(vapi_sw_interface_set_flags(g_vapi_ctx, mp,
+                                          sw_interface_set_flags_cb, NULL));
+    if (VAPI_OK != rv)
+        return -SCVPP_EINVAL;
+
+    return 0;
+}
+
+int get_interface_name(char *interface_name, uint32_t sw_if_index)
+{
+    struct elt *stack= NULL;
+    sw_interface_dump_t *dump;
+    int rc = -SCVPP_NOT_FOUND;
+
+    stack = interface_dump_all();
+    if (!stack)
+        return -SCVPP_NOT_FOUND;
+
+    foreach_stack_elt(stack) {
+        dump = (sw_interface_dump_t *) data;
+
+        if (dump->sw_if_index == sw_if_index) {
+            strncpy(interface_name, (char *)dump->interface_name, VPP_INTFC_NAME_LEN);
+            rc = SCVPP_OK;
+        }
+
+        free(dump);
+    }
+
+    return rc;
+}