diff options
Diffstat (limited to 'src/plugins/lb/api.c')
| -rw-r--r-- | src/plugins/lb/api.c | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/src/plugins/lb/api.c b/src/plugins/lb/api.c new file mode 100644 index 00000000000..06c53fa1005 --- /dev/null +++ b/src/plugins/lb/api.c @@ -0,0 +1,228 @@ +/* + * 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 <lb/lb.h> + +#include <vppinfra/byte_order.h> +#include <vlibapi/api.h> +#include <vlibapi/api.h> +#include <vlibmemory/api.h> +#include <vlibsocket/api.h> + +#define vl_msg_id(n,h) n, +typedef enum { +#include <lb/lb.api.h> + /* We'll want to know how many messages IDs we need... */ + VL_MSG_FIRST_AVAILABLE, +} vl_msg_id_t; +#undef vl_msg_id + + +/* define message structures */ +#define vl_typedefs +#include <lb/lb.api.h> +#undef vl_typedefs + +/* define generated endian-swappers */ +#define vl_endianfun +#include <lb/lb.api.h> +#undef vl_endianfun + +#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__) + +/* Get the API version number */ +#define vl_api_version(n,v) static u32 api_version=(v); +#include <lb/lb.api.h> +#undef vl_api_version + +#define vl_msg_name_crc_list +#include <lb/lb.api.h> +#undef vl_msg_name_crc_list + +static void +setup_message_id_table (lb_main_t * lbm, api_main_t * am) +{ +#define _(id,n,crc) \ + vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id + lbm->msg_id_base); + foreach_vl_msg_name_crc_lb; +#undef _ +} + +/* Macro to finish up custom dump fns */ +#define FINISH \ + vec_add1 (s, 0); \ + vl_print (handle, (char *)s); \ + vec_free (s); \ + return handle; + +/* + * A handy macro to set up a message reply. + * Assumes that the following variables are available: + * mp - pointer to request message + * rmp - pointer to reply message type + * rv - return value + */ + +#define REPLY_MACRO(t) \ +do { \ + unix_shared_memory_queue_t * q = \ + vl_api_client_index_to_input_queue (mp->client_index); \ + if (!q) \ + return; \ + \ + rmp = vl_msg_api_alloc (sizeof (*rmp)); \ + rmp->_vl_msg_id = ntohs((t)+lbm->msg_id_base); \ + rmp->context = mp->context; \ + rmp->retval = ntohl(rv); \ + \ + vl_msg_api_send_shmem (q, (u8 *)&rmp); \ +} while(0); + +static void +vl_api_lb_conf_t_handler +(vl_api_lb_conf_t * mp) +{ + lb_main_t *lbm = &lb_main; + vl_api_lb_conf_reply_t * rmp; + int rv = 0; + + rv = lb_conf((ip4_address_t *)&mp->ip4_src_address, + (ip6_address_t *)mp->ip6_src_address, + mp->sticky_buckets_per_core, + mp->flow_timeout); + + REPLY_MACRO (VL_API_LB_CONF_REPLY); +} + +static void *vl_api_lb_conf_t_print +(vl_api_lb_conf_t *mp, void * handle) +{ + u8 * s; + s = format (0, "SCRIPT: lb_conf "); + s = format (s, "%U ", format_ip4_address, (ip4_address_t *)&mp->ip4_src_address); + s = format (s, "%U ", format_ip6_address, (ip6_address_t *)mp->ip6_src_address); + s = format (s, "%u ", mp->sticky_buckets_per_core); + s = format (s, "%u ", mp->flow_timeout); + FINISH; +} + + +static void +vl_api_lb_add_del_vip_t_handler +(vl_api_lb_add_del_vip_t * mp) +{ + lb_main_t *lbm = &lb_main; + vl_api_lb_conf_reply_t * rmp; + int rv = 0; + ip46_address_t prefix; + memcpy(&prefix.ip6, mp->ip_prefix, sizeof(prefix.ip6)); + + if (mp->is_del) { + u32 vip_index; + if (!(rv = lb_vip_find_index(&prefix, mp->prefix_length, &vip_index))) + rv = lb_vip_del(vip_index); + } else { + u32 vip_index; + lb_vip_type_t type; + if (ip46_prefix_is_ip4(&prefix, mp->prefix_length)) { + type = mp->is_gre4?LB_VIP_TYPE_IP4_GRE4:LB_VIP_TYPE_IP4_GRE6; + } else { + type = mp->is_gre4?LB_VIP_TYPE_IP6_GRE4:LB_VIP_TYPE_IP6_GRE6; + } + + rv = lb_vip_add(&prefix, mp->prefix_length, type, + mp->new_flows_table_length, &vip_index); + } + REPLY_MACRO (VL_API_LB_CONF_REPLY); +} + +static void *vl_api_lb_add_del_vip_t_print +(vl_api_lb_add_del_vip_t *mp, void * handle) +{ + u8 * s; + s = format (0, "SCRIPT: lb_add_del_vip "); + s = format (s, "%U ", format_ip46_prefix, + (ip46_address_t *)mp->ip_prefix, mp->prefix_length, IP46_TYPE_ANY); + s = format (s, "%s ", mp->is_gre4?"gre4":"gre6"); + s = format (s, "%u ", mp->new_flows_table_length); + s = format (s, "%s ", mp->is_del?"del":"add"); + FINISH; +} + +static void +vl_api_lb_add_del_as_t_handler +(vl_api_lb_add_del_as_t * mp) +{ + lb_main_t *lbm = &lb_main; + vl_api_lb_conf_reply_t * rmp; + int rv = 0; + u32 vip_index; + if ((rv = lb_vip_find_index((ip46_address_t *)mp->vip_ip_prefix, + mp->vip_prefix_length, &vip_index))) + goto done; + + if (mp->is_del) + rv = lb_vip_del_ass(vip_index, (ip46_address_t *)mp->as_address, 1); + else + rv = lb_vip_add_ass(vip_index, (ip46_address_t *)mp->as_address, 1); + +done: + REPLY_MACRO (VL_API_LB_CONF_REPLY); +} + +static void *vl_api_lb_add_del_as_t_print +(vl_api_lb_add_del_as_t *mp, void * handle) +{ + u8 * s; + s = format (0, "SCRIPT: lb_add_del_as "); + s = format (s, "%U ", format_ip46_prefix, + (ip46_address_t *)mp->vip_ip_prefix, mp->vip_prefix_length, IP46_TYPE_ANY); + s = format (s, "%U ", format_ip46_address, + (ip46_address_t *)mp->as_address, IP46_TYPE_ANY); + s = format (s, "%s ", mp->is_del?"del":"add"); + FINISH; +} + +/* List of message types that this plugin understands */ +#define foreach_lb_plugin_api_msg \ +_(LB_CONF, lb_conf) \ +_(LB_ADD_DEL_VIP, lb_add_del_vip) \ +_(LB_ADD_DEL_AS, lb_add_del_as) + +static clib_error_t * lb_api_init (vlib_main_t * vm) +{ + lb_main_t *lbm = &lb_main; + u8 *name = format (0, "lb_%08x%c", api_version, 0); + lbm->msg_id_base = vl_msg_api_get_msg_ids + ((char *) name, VL_MSG_FIRST_AVAILABLE); + +#define _(N,n) \ + vl_msg_api_set_handlers((VL_API_##N + lbm->msg_id_base), \ + #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_lb_plugin_api_msg; +#undef _ + + /* Add our API messages to the global name_crc hash table */ + setup_message_id_table (lbm, &api_main); + + return 0; +} + +VLIB_INIT_FUNCTION (lb_api_init); |