From 3f844d0bc900e5db40ba74724e2b61e7943682d3 Mon Sep 17 00:00:00 2001 From: Neale Ranns Date: Sat, 18 Feb 2017 00:03:54 -0800 Subject: Proxy ND (RFC4389 - or a sub-set thereof). This allows the 'emulation' of bridging. That is hosts in one sub-net reachable via differenet interfaces. Introducate a new API command: ip6 nd proxy this indicates 2 things; 1) that host is reachable out of interface . VPP will thus install that route. 2) NS requests sent to will be responeded to (i.e. proxied). Change-Id: I863f967fdb5097ab3b574769c70afdbfc8d5478a Signed-off-by: Neale Ranns --- src/vnet/ip/ip_api.c | 102 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 102 insertions(+) (limited to 'src/vnet/ip/ip_api.c') diff --git a/src/vnet/ip/ip_api.c b/src/vnet/ip/ip_api.c index ab164a5f467..df9ca939c24 100644 --- a/src/vnet/ip/ip_api.c +++ b/src/vnet/ip/ip_api.c @@ -72,6 +72,9 @@ _(IP_ADD_DEL_ROUTE, ip_add_del_route) \ _(SET_IP_FLOW_HASH,set_ip_flow_hash) \ _(SW_INTERFACE_IP6ND_RA_CONFIG, sw_interface_ip6nd_ra_config) \ _(SW_INTERFACE_IP6ND_RA_PREFIX, sw_interface_ip6nd_ra_prefix) \ +_(IP6ND_PROXY_ADD_DEL, ip6nd_proxy_add_del) \ +_(IP6ND_PROXY_DUMP, ip6nd_proxy_dump) \ +_(IP6ND_PROXY_DETAILS, ip6nd_proxy_details) \ _(SW_INTERFACE_IP6_ENABLE_DISABLE, sw_interface_ip6_enable_disable ) \ _(SW_INTERFACE_IP6_SET_LINK_LOCAL_ADDRESS, \ sw_interface_ip6_set_link_local_address) @@ -1399,6 +1402,105 @@ static void REPLY_MACRO (VL_API_SW_INTERFACE_IP6ND_RA_PREFIX_REPLY); } +static void +send_ip6nd_proxy_details (unix_shared_memory_queue_t * q, + u32 context, + const ip46_address_t * addr, u32 sw_if_index) +{ + vl_api_ip6nd_proxy_details_t *mp; + + mp = vl_msg_api_alloc (sizeof (*mp)); + memset (mp, 0, sizeof (*mp)); + mp->_vl_msg_id = ntohs (VL_API_IP6ND_PROXY_DETAILS); + mp->context = context; + mp->sw_if_index = htonl (sw_if_index); + memcpy (mp->address, addr, 16); + + vl_msg_api_send_shmem (q, (u8 *) & mp); +} + +static void +vl_api_ip6nd_proxy_details_t_handler (vl_api_ip_neighbor_details_t * mp) +{ + clib_warning ("BUG"); +} + +typedef struct api_ip6nd_proxy_fib_table_walk_ctx_t_ +{ + u32 *indices; +} api_ip6nd_proxy_fib_table_walk_ctx_t; + +static int +api_ip6nd_proxy_fib_table_walk (fib_node_index_t fei, void *arg) +{ + api_ip6nd_proxy_fib_table_walk_ctx_t *ctx = arg; + + if (fib_entry_is_sourced (fei, FIB_SOURCE_IP6_ND_PROXY)) + { + vec_add1 (ctx->indices, fei); + } + + return (1); +} + +static void +vl_api_ip6nd_proxy_dump_t_handler (vl_api_ip6nd_proxy_dump_t * mp) +{ + ip6_main_t *im6 = &ip6_main; + fib_table_t *fib_table; + api_ip6nd_proxy_fib_table_walk_ctx_t ctx = { + .indices = NULL, + }; + fib_node_index_t *feip; + fib_prefix_t pfx; + unix_shared_memory_queue_t *q; + + q = vl_api_client_index_to_input_queue (mp->client_index); + if (q == 0) + { + return; + } + + /* *INDENT-OFF* */ + pool_foreach (fib_table, im6->fibs, + ({ + fib_table_walk(fib_table->ft_index, + FIB_PROTOCOL_IP6, + api_ip6nd_proxy_fib_table_walk, + &ctx); + })); + /* *INDENT-ON* */ + + vec_sort_with_function (ctx.indices, fib_entry_cmp_for_sort); + + vec_foreach (feip, ctx.indices) + { + fib_entry_get_prefix (*feip, &pfx); + + send_ip6nd_proxy_details (q, + mp->context, + &pfx.fp_addr, + fib_entry_get_resolving_interface (*feip)); + } + + vec_free (ctx.indices); +} + +static void +vl_api_ip6nd_proxy_add_del_t_handler (vl_api_ip6nd_proxy_add_del_t * mp) +{ + vl_api_ip6nd_proxy_add_del_reply_t *rmp; + int rv = 0; + + VALIDATE_SW_IF_INDEX (mp); + + rv = ip6_neighbor_proxy_add_del (ntohl (mp->sw_if_index), + (ip6_address_t *) mp->address, mp->is_del); + + BAD_SW_IF_INDEX_LABEL; + REPLY_MACRO (VL_API_IP6ND_PROXY_ADD_DEL_REPLY); +} + static void vl_api_sw_interface_ip6_enable_disable_t_handler (vl_api_sw_interface_ip6_enable_disable_t * mp) -- cgit 1.2.3-korg