From cbe25aab3be72154f2c706c39eeba6a77f34450f Mon Sep 17 00:00:00 2001 From: Neale Ranns Date: Mon, 30 Sep 2019 10:53:31 +0000 Subject: ip: Protocol Independent IP Neighbors Type: feature - ip-neighbour: generic neighbour handling; APIs, DBs, event handling, aging - arp: ARP protocol implementation - ip6-nd; IPv6 neighbor discovery implementation; separate ND, MLD, RA - ip6-link; manage link-local addresses - l2-arp-term; events separated from IP neighbours, since they are not the same. vnet retains just enough education to perform ND/ARP packet construction. arp and ip6-nd to be moved to plugins soon. Change-Id: I88dedd0006b299344f4c7024a0aa5baa6b9a8bbe Signed-off-by: Neale Ranns --- src/vnet/arp/arp_api.c | 190 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 190 insertions(+) create mode 100644 src/vnet/arp/arp_api.c (limited to 'src/vnet/arp/arp_api.c') diff --git a/src/vnet/arp/arp_api.c b/src/vnet/arp/arp_api.c new file mode 100644 index 00000000000..170bace2b0a --- /dev/null +++ b/src/vnet/arp/arp_api.c @@ -0,0 +1,190 @@ +/* + * 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 + +#include + +#include +#include + +#include + +#include +#include + +/* define message IDs */ +#include +#include +#include + +/** + * Base message ID fot the plugin + */ +static u32 arp_base_msg_id; +#define REPLY_MSG_ID_BASE arp_base_msg_id + +#include + +static void +vl_api_proxy_arp_add_del_t_handler (vl_api_proxy_arp_add_del_t * mp) +{ + vl_api_proxy_arp_add_del_reply_t *rmp; + ip4_address_t lo, hi; + u32 fib_index; + int rv; + + fib_index = fib_table_find (FIB_PROTOCOL_IP4, ntohl (mp->proxy.table_id)); + + if (~0 == fib_index) + { + rv = VNET_API_ERROR_NO_SUCH_FIB; + goto out; + } + + ip4_address_decode (mp->proxy.low, &lo); + ip4_address_decode (mp->proxy.hi, &hi); + + if (mp->is_add) + rv = arp_proxy_add (fib_index, &lo, &hi); + else + rv = arp_proxy_del (fib_index, &lo, &hi); + +out: + REPLY_MACRO (VL_API_PROXY_ARP_ADD_DEL_REPLY); +} + +typedef struct proxy_arp_walk_ctx_t_ +{ + vl_api_registration_t *reg; + u32 context; +} proxy_arp_walk_ctx_t; + +static walk_rc_t +send_proxy_arp_details (const ip4_address_t * lo_addr, + const ip4_address_t * hi_addr, + u32 fib_index, void *data) +{ + vl_api_proxy_arp_details_t *mp; + proxy_arp_walk_ctx_t *ctx; + + ctx = data; + + mp = vl_msg_api_alloc (sizeof (*mp)); + clib_memset (mp, 0, sizeof (*mp)); + mp->_vl_msg_id = ntohs (VL_API_PROXY_ARP_DETAILS + REPLY_MSG_ID_BASE); + mp->context = ctx->context; + mp->proxy.table_id = htonl (fib_index); + + ip4_address_encode (lo_addr, mp->proxy.low); + ip4_address_encode (hi_addr, mp->proxy.hi); + + vl_api_send_msg (ctx->reg, (u8 *) mp); + + return (WALK_CONTINUE); +} + +static void +vl_api_proxy_arp_dump_t_handler (vl_api_proxy_arp_dump_t * mp) +{ + vl_api_registration_t *reg; + + reg = vl_api_client_index_to_registration (mp->client_index); + if (!reg) + return; + + proxy_arp_walk_ctx_t wctx = { + .reg = reg, + .context = mp->context, + }; + + proxy_arp_walk (send_proxy_arp_details, &wctx); +} + +static walk_rc_t +send_proxy_arp_intfc_details (u32 sw_if_index, void *data) +{ + vl_api_proxy_arp_intfc_details_t *mp; + proxy_arp_walk_ctx_t *ctx; + + ctx = data; + + mp = vl_msg_api_alloc (sizeof (*mp)); + clib_memset (mp, 0, sizeof (*mp)); + mp->_vl_msg_id = ntohs (VL_API_PROXY_ARP_INTFC_DETAILS + REPLY_MSG_ID_BASE); + mp->context = ctx->context; + mp->sw_if_index = htonl (sw_if_index); + + vl_api_send_msg (ctx->reg, (u8 *) mp); + + return (WALK_CONTINUE); +} + +static void +vl_api_proxy_arp_intfc_dump_t_handler (vl_api_proxy_arp_intfc_dump_t * mp) +{ + vl_api_registration_t *reg; + + reg = vl_api_client_index_to_registration (mp->client_index); + if (!reg) + return; + + proxy_arp_walk_ctx_t wctx = { + .reg = reg, + .context = mp->context, + }; + + proxy_arp_intfc_walk (send_proxy_arp_intfc_details, &wctx); +} + +static void + vl_api_proxy_arp_intfc_enable_disable_t_handler + (vl_api_proxy_arp_intfc_enable_disable_t * mp) +{ + vl_api_proxy_arp_intfc_enable_disable_reply_t *rmp; + int rv; + + VALIDATE_SW_IF_INDEX (mp); + + if (mp->enable) + rv = arp_proxy_enable (ntohl (mp->sw_if_index)); + else + rv = arp_proxy_disable (ntohl (mp->sw_if_index)); + + BAD_SW_IF_INDEX_LABEL; + + REPLY_MACRO (VL_API_PROXY_ARP_INTFC_ENABLE_DISABLE_REPLY); +} + +#include + +static clib_error_t * +arp_api_init (vlib_main_t * vm) +{ + /* Ask for a correctly-sized block of API message decode slots */ + arp_base_msg_id = setup_message_id_table (); + + return 0; +} + +VLIB_INIT_FUNCTION (arp_api_init); + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ -- cgit 1.2.3-korg