diff options
Diffstat (limited to 'src/plugins/openconfig/openconfig_local_routing.c')
| -rw-r--r-- | src/plugins/openconfig/openconfig_local_routing.c | 548 |
1 files changed, 0 insertions, 548 deletions
diff --git a/src/plugins/openconfig/openconfig_local_routing.c b/src/plugins/openconfig/openconfig_local_routing.c deleted file mode 100644 index 2d16da0..0000000 --- a/src/plugins/openconfig/openconfig_local_routing.c +++ /dev/null @@ -1,548 +0,0 @@ -/* - * 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 <string.h> - -#include <scvpp/comm.h> -#include <scvpp/interface.h> -#include <scvpp/ip.h> - -#include <sc_plugins.h> - -#define HOP_INDEX_SIZE 10 //number of digit in max 32 bit integer - -static inline int -_set_route (const char *prefix, const char *nhop, bool is_add, - const char *iface) -{ - int table = 0; //FIB table ID - int mask; - int rc; - - // Put prefix length in mask and prefix IP in prefix - mask = ip_prefix_split(prefix); - if (mask < 1) { - SRP_LOG_ERR("Prefix length can not be %d", mask); - return SR_ERR_INVAL_ARG; - } - - rc = ipv46_config_add_del_route(prefix, mask, nhop, is_add, table, iface); - if (rc != SCVPP_OK) { - SRP_LOG_ERR("Add/delete route failed for %s %s", prefix, iface); - return SR_ERR_INVAL_ARG; - } - - SRP_LOG_INF("Add/delete route Success for %s %s", prefix, iface); - - return SR_ERR_OK; -} - -#define STR(string) #string - -#define ROOT "/openconfig-local-routing:local-routes/static-routes/static[prefix='%s']/next-hops/next-hop[index='%s']/%s" - -static inline char * _get_ds_elem(sr_session_ctx_t *sess, const char *prefix, - const char *index, const char *sub) -{ - char xpath[XPATH_SIZE] = {0}; - sr_val_t *value = NULL; - int rc; - - snprintf(xpath, XPATH_SIZE, ROOT, prefix, index, sub); - - rc = sr_get_item(sess, xpath, &value); - if (SR_ERR_OK != rc) { - SRP_LOG_DBG("XPATH %s not set", xpath); - return NULL; - } - - return value->data.string_val; -} - -/* @brief add/del route to FIB table 0. - * If you add/delete an entry to FIB, prefix is mandatory and next hop can be: - * - interface only - * - next hop IP - * - both interface and next hop IP - */ -static int set_route(sr_session_ctx_t *sess, const char *index, - const char *interface /* NULLABLE*/, - const char *next_hop /* NULLABLE*/, - const char *prefix, bool is_add) -{ - const char *iface = NULL; - const char *nhop = NULL; - - ARG_CHECK3(SR_ERR_INVAL_ARG, sess, index, prefix); - - if (!interface && !next_hop) - return SR_ERR_INVAL_ARG; - - if (!interface) //fetch interface in datastore, can return NULL - iface = _get_ds_elem(sess, prefix, index, "interface-ref/config/interface"); - else //use interface provided - iface = interface; - - if (!next_hop) //fetch next-hop in datastore , can return NULL - nhop = _get_ds_elem(sess, prefix, index, "config/next-hop"); - else //use next hop IP provided - nhop = next_hop; - - return _set_route(prefix, nhop, is_add, iface); -} - -/* @brief Callback used to add prefix entry for XPATH: - * /openconfig-local-routing:local-routes/static-routes/static/config - */ -static int -oc_prefix_config_cb(sr_session_ctx_t *ds, const char *xpath, - sr_notif_event_t event, void *private_ctx) -{ - UNUSED(ds); UNUSED(xpath); UNUSED(event); UNUSED(private_ctx); - - SRP_LOG_INF("In %s", __FUNCTION__); - - return SR_ERR_OK; -} - -// XPATH: /openconfig-local-routing:local-routes/static-routes/static[prefix='%s']/next-hops/next-hop[index='%s']/config/ -static int oc_next_hop_config_cb(sr_session_ctx_t *ds, const char *xpath, - sr_notif_event_t event, void *private_ctx) -{ - char prefix[VPP_IP4_PREFIX_STRING_LEN] = {0}; - char next_hop[VPP_IP4_ADDRESS_STRING_LEN] = {0}; //IP of next router - char index[HOP_INDEX_SIZE]; //next hop index - bool index_set = false, next_hop_set = false; - sr_change_iter_t *it; - sr_change_oper_t oper; - sr_val_t *old, *new, *tmp; - sr_xpath_ctx_t state = {0}; - int rc = SR_ERR_OK; - UNUSED(private_ctx); - - ARG_CHECK2(SR_ERR_INVAL_ARG, ds, xpath); - - SRP_LOG_INF("In %s", __FUNCTION__); - - if (event == SR_EV_APPLY) //SR_EV_VERIFY already applied the changes - return SR_ERR_OK; - - rc = sr_get_changes_iter(ds, (char *)xpath, &it); - if (rc != SR_ERR_OK) { - sr_free_change_iter(it); - return rc; - } - - foreach_change(ds, it, oper, old, new) { - - rc = get_xpath_key(prefix, new->xpath, "static", "prefix", - VPP_IP4_PREFIX_STRING_LEN, &state); - if (rc != 0) - goto error; - - switch (oper) { - case SR_OP_MODIFIED: - case SR_OP_CREATED: - tmp = new; - break; - case SR_OP_DELETED: - tmp = old; - break; - default: - SRP_LOG_WRN_MSG("Operation not supported"); - break; - } - - if (sr_xpath_node_name_eq(tmp->xpath, "config")) { - SRP_LOG_DBG("xpath: %s", tmp->xpath); - } else if (sr_xpath_node_name_eq(tmp->xpath, "index")) { - strncpy(index, tmp->data.string_val, HOP_INDEX_SIZE); - index_set = true; - } else if(sr_xpath_node_name_eq(tmp->xpath, "next-hop")) { - strncpy(next_hop, tmp->data.string_val, VPP_IP4_ADDRESS_STRING_LEN); - next_hop_set = true; - } else if(sr_xpath_node_name_eq(tmp->xpath, "recurse")) { - //SYSREPO BUG: Just catch it, sysrepo thinks it is mandatory... - } else { //metric, recurse - SRP_LOG_ERR("Unsupported field %s", tmp->xpath); - return SR_ERR_UNSUPPORTED; - } - - if (index_set && next_hop_set) { - if (oper == SR_OP_CREATED) { - rc = set_route(ds, index, NULL, next_hop, prefix, true); - } else if (oper == SR_OP_MODIFIED) { - rc = set_route(ds, index, NULL, next_hop, prefix, false); - rc |= set_route(ds, index, NULL, next_hop, prefix, true); - } else if (oper == SR_OP_DELETED) { - rc = set_route(ds, index, NULL, next_hop, prefix, false); - } - - if (rc != 0) { - SRP_LOG_ERR_MSG("setting route failed"); - goto error; - } - index_set = false; next_hop_set = false; - } - - sr_free_val(old); - sr_free_val(new); - sr_xpath_recover(&state); - } - - sr_free_change_iter(it); - return rc; - -error: - sr_free_val(old); - sr_free_val(new); - sr_xpath_recover(&state); - sr_free_change_iter(it); - return rc; -} - -// XPATH: /openconfig-local-routing:local-routes/static-routes/static[prefix='%s']/next-hops/next-hop[index='%s']/interface-ref/config/ -static int -oc_next_hop_interface_config_cb(sr_session_ctx_t *ds, const char *xpath, - sr_notif_event_t event, void *private_ctx) -{ - char prefix[VPP_IP4_PREFIX_STRING_LEN] = {0}; - char interface[VPP_INTFC_NAME_LEN] = {0}; - char index[HOP_INDEX_SIZE] = {0}; - sr_change_iter_t *it = NULL; - sr_change_oper_t oper; - sr_val_t *old, *new, *tmp; - sr_xpath_ctx_t state = {0}; - bool interface_set = false; - int rc = SR_ERR_OK; - UNUSED(private_ctx); - - SRP_LOG_INF("In %s", __FUNCTION__); - - if (event == SR_EV_APPLY) - return SR_ERR_OK; - - rc = sr_get_changes_iter(ds, (char *)xpath, &it); - if (rc != SR_ERR_OK) { - sr_free_change_iter(it); - return rc; - } - - foreach_change(ds, it, oper, old, new) { - - SRP_LOG_DBG("xpath: %s", new->xpath); - - rc = get_xpath_key(prefix, new->xpath, "static", "prefix", - VPP_IP4_PREFIX_STRING_LEN, &state); - - rc |= get_xpath_key(index, new->xpath, "next-hop", "index", - HOP_INDEX_SIZE, &state); - if (rc) - goto error; - - switch (oper) { - case SR_OP_MODIFIED: - case SR_OP_CREATED: - tmp = new; - break; - case SR_OP_DELETED: - tmp = old; - break; - default: - SRP_LOG_WRN_MSG("Operation not supported"); - break; - } - - if (sr_xpath_node_name_eq(tmp->xpath, "config")) { - SRP_LOG_DBG("xpath: %s", tmp->xpath); - } else if (sr_xpath_node_name_eq(tmp->xpath, "interface")) { - strncpy(interface, tmp->data.string_val, VPP_INTFC_NAME_LEN); - interface_set = true; - } else { //metric, recurse - SRP_LOG_ERR("Unsupported field %s", tmp->xpath); - return SR_ERR_UNSUPPORTED; - } - - if (oper == SR_OP_CREATED && interface_set) { - rc = set_route(ds, index, interface, NULL, prefix, true); - interface_set = false; - } else if (oper == SR_OP_MODIFIED && interface_set) { - rc = set_route(ds, index, interface, NULL, prefix, false); - rc |= set_route(ds, index, interface, NULL, prefix, true); - interface_set = false; - } else if (oper == SR_OP_DELETED && interface_set) { - rc = set_route(ds, index, interface, NULL, prefix, false); - interface_set = false; - } - - if (rc != 0) { - SRP_LOG_ERR_MSG("setting route failed"); - goto error; - } - - sr_free_val(old); - sr_free_val(new); - sr_xpath_recover(&state); - } - - sr_free_change_iter(it); - return SR_ERR_OK; - -error: - sr_free_val(old); - sr_free_val(new); - sr_xpath_recover(&state); - sr_free_change_iter(it); - return rc; -} - -// XPATH: /openconfig-local-routing:local-routes/static-routes/static/state -static int oc_prefix_state_cb( - const char *xpath, sr_val_t **values, size_t *values_cnt, - uint64_t request_id, const char *original_xpath, void *private_ctx) -{ - UNUSED(request_id); UNUSED(original_xpath); UNUSED(private_ctx); - char prefix[VPP_IP4_PREFIX_STRING_LEN] = {0}; - sr_xpath_ctx_t state = {0}; - sr_val_t *vals = NULL; - fib_dump_t *reply = NULL; - int vc = 1; - int rc = 0; - - ARG_CHECK3(SR_ERR_INVAL_ARG, xpath, values, values_cnt); - - SRP_LOG_INF("In %s", __FUNCTION__); - - rc = get_xpath_key(prefix, (char *)xpath, "static", "prefix", - VPP_IP4_PREFIX_STRING_LEN, &state); - if (rc != 0) - return SR_ERR_INVAL_ARG; - - rc = ipv4_fib_dump_prefix(prefix, &reply); - if (rc == -SCVPP_NOT_FOUND) { - SRP_LOG_ERR("Prefix %s not found in VPP FIB", prefix); - return SR_ERR_NOT_FOUND; - } - - /* Allocation for number of elements dumped by ipv4_fib_dump_all */ - rc = sr_new_values(vc, &vals); - if (SR_ERR_OK != rc) - return rc; - - sr_val_build_xpath(&vals[0], "%s/prefix", xpath); - sr_val_set_str_data(&vals[0], SR_STRING_T, prefix); - - sr_xpath_recover(&state); - - free(reply); - *values = vals; - *values_cnt = vc; - - return SR_ERR_OK; -} - -// XPATH /openconfig-local-routing:local-routes/static-routes/static/next-hops/next-hop/state -static int -oc_next_hop_state_cb(const char *xpath, sr_val_t **values, size_t *values_cnt, - uint64_t request_id, const char *original_xpath, - void *private_ctx) -{ - UNUSED(request_id); UNUSED(original_xpath); UNUSED(private_ctx); - char prefix[VPP_IP4_PREFIX_STRING_LEN] = {0}; - char index[HOP_INDEX_SIZE]; - char next_hop[INET_ADDRSTRLEN] = {0}; - fib_dump_t *reply = NULL; - sr_xpath_ctx_t state = {0}; - sr_val_t *vals = NULL; - int vc = 3; - int rc = 0; - - ARG_CHECK3(SR_ERR_INVAL_ARG, xpath, values, values_cnt); - - SRP_LOG_INF("In %s", __FUNCTION__); - - /* Get prefix and index key from XPATH */ - rc = get_xpath_key(prefix, (char *)xpath, "static", "prefix", - VPP_IP4_PREFIX_STRING_LEN, &state); - - rc |= get_xpath_key(index, (char*)xpath, "next-hop", "index", - HOP_INDEX_SIZE, &state); - - if (rc != 0) - return SR_ERR_INVAL_ARG; - - rc = ipv4_fib_dump_prefix(prefix, &reply); - if (rc != SCVPP_OK) { - SRP_LOG_ERR("Fail to dump prefix %s", prefix); - return SR_ERR_INVAL_ARG; - } - - rc = sr_new_values(vc, &vals); - if (SR_ERR_OK != rc) - return rc; - - // check next hop index equals next hop id - if (strtoul(index, NULL, 0) != reply->path[0].next_hop_id) { - SRP_LOG_ERR("next hop index is %d for prefix %s", - reply->path[0].next_hop_id, prefix); - SRP_LOG_ERR("before %s, stroul is %lu", index, strtoul(index, NULL, 0)); - return SR_ERR_INVAL_ARG; - } - - sr_val_build_xpath(&vals[0], "%s/index", xpath); - sr_val_set_str_data(&vals[0], SR_STRING_T, index); - - strncpy(next_hop, sc_ntoa(reply->path[0].next_hop), VPP_IP4_ADDRESS_LEN); - sr_val_build_xpath(&vals[1], "%s/next-hop", xpath); - sr_val_set_str_data(&vals[1], SR_STRING_T, (char *)reply->path[0].next_hop); - - sr_val_build_xpath(&vals[2], "%s/metric", xpath); - vals[2].type = SR_UINT32_T; - vals[2].data.uint32_val = reply->path[0].weight; - - free(reply); - sr_xpath_recover(&state); - *values = vals; - *values_cnt = vc; - - return SR_ERR_OK; -} - -// XPATH /openconfig-local-routing:local-routes/static-routes/static/next-hops/next-hop/interface-ref/state -static int -oc_next_hop_interface_state_cb(const char *xpath, sr_val_t **values, - size_t *values_cnt, uint64_t request_id, - const char *original_xpath, void *private_ctx) -{ - UNUSED(request_id); UNUSED(original_xpath); UNUSED(private_ctx); - sr_xpath_ctx_t state = {0}; - char prefix[VPP_IP4_PREFIX_STRING_LEN] = {0}; - char interface[VPP_INTFC_NAME_LEN] = {0}; - char index[HOP_INDEX_SIZE]; //next hop index - fib_dump_t *reply = NULL; - sr_val_t *vals = NULL; - int vc = 1; - int rc = 0; - - //ARG_CHECK3(SR_ERR_INVAL_ARG, xpath, values, values_cnt); - - SRP_LOG_INF("In %s", __FUNCTION__); - - ///* Get prefix key from XPATH */ - rc = get_xpath_key(prefix, (char*) xpath, "static", "prefix", - VPP_IP4_PREFIX_STRING_LEN, &state); - - rc |= get_xpath_key(index, (char *)xpath, "next-hop", "index", - HOP_INDEX_SIZE, &state); - - if (rc != 0) - return SR_ERR_INVAL_ARG; - - rc = ipv4_fib_dump_prefix(prefix, &reply); - if (rc != SCVPP_OK) { - SRP_LOG_ERR("Fail to dump prefix %s", prefix); - return SR_ERR_INVAL_ARG; - } - //TODO: check nhop? - - rc = sr_new_values(vc, &vals); - if (SR_ERR_OK != rc) - return rc; - - // check next hop index equals next hop id - if (strtoul(index, NULL, 0) != reply->path[0].next_hop_id) { - SRP_LOG_ERR("next hop index is %d for prefix %s", - reply->path[0].next_hop_id, prefix); - SRP_LOG_ERR("before %s, stroul is %lu", index, strtoul(index, NULL, 0)); - return SR_ERR_INVAL_ARG; - } - - rc = get_interface_name(interface, reply->path[0].sw_if_index); - if (rc != SCVPP_OK) { - SRP_LOG_ERR("No interface name for id %d", reply->path[0].sw_if_index); - return SR_ERR_INVAL_ARG; - } - - sr_val_build_xpath(&vals[0], "%s/interface", xpath); - sr_val_set_str_data(&vals[0], SR_STRING_T, interface); - - free(reply); - sr_xpath_recover(&state); - *values = vals; - *values_cnt = vc; - - return SR_ERR_OK; -} - -int -openconfig_local_routing_init(sc_plugin_main_t *pm) -{ - int rc = SR_ERR_OK; - SRP_LOG_DBG_MSG("Initializing openconfig-local-routing plugin."); - - rc = sr_subtree_change_subscribe(pm->session, "/openconfig-local-routing:local-routes/static-routes/static/config", - oc_prefix_config_cb, NULL, 0, SR_SUBSCR_CTX_REUSE, &pm->subscription); - if (SR_ERR_OK != rc) { - goto error; - } - - rc = sr_subtree_change_subscribe(pm->session, "/openconfig-local-routing:local-routes/static-routes/static/next-hops/next-hop/config", - oc_next_hop_config_cb, NULL, 0, SR_SUBSCR_CTX_REUSE, &pm->subscription); - if (SR_ERR_OK != rc) { - goto error; - } - - rc = sr_subtree_change_subscribe(pm->session, "/openconfig-local-routing:local-routes/static-routes/static/next-hops/next-hop/interface-ref/config", - oc_next_hop_interface_config_cb, NULL, 0, SR_SUBSCR_CTX_REUSE, &pm->subscription); - if (SR_ERR_OK != rc) { - goto error; - } - - rc = sr_dp_get_items_subscribe(pm->session, "/openconfig-local-routing:local-routes/static-routes/static/state", - oc_prefix_state_cb, NULL, SR_SUBSCR_CTX_REUSE, &pm->subscription); - if (SR_ERR_OK != rc) { - goto error; - } - - rc = sr_dp_get_items_subscribe(pm->session, "/openconfig-local-routing:local-routes/static-routes/static/next-hops/next-hop/state", - oc_next_hop_state_cb, NULL, SR_SUBSCR_CTX_REUSE, &pm->subscription); - if (SR_ERR_OK != rc) { - goto error; - } - - rc = sr_dp_get_items_subscribe(pm->session, "/openconfig-local-routing:local-routes/static-routes/static/next-hops/next-hop/interface-ref/state", - oc_next_hop_interface_state_cb, NULL, SR_SUBSCR_CTX_REUSE, &pm->subscription); - if (SR_ERR_OK != rc) { - goto error; - } - - SRP_LOG_DBG_MSG("openconfig-local-routing plugin initialized successfully."); - return SR_ERR_OK; - -error: - SRP_LOG_ERR("Error by initialization of openconfig-local-routing plugin. Error : %d", rc); - return rc; -} - -void -openconfig_local_routing_exit(__attribute__((unused)) sc_plugin_main_t *pm) -{ -} - -SC_INIT_FUNCTION(openconfig_local_routing_init); -SC_EXIT_FUNCTION(openconfig_local_routing_exit); - |