From a23197980e40d4d9414bcfaf59005a1dc2a89251 Mon Sep 17 00:00:00 2001 From: sreejith Date: Wed, 29 Mar 2017 01:15:02 -0400 Subject: Added vpp intial source code from master branch 17.01.1 Change-Id: I81bdace6f330825a1746a853766779dfb24765fd Signed-off-by: sreejith --- vpp/vnet/vnet/dpo/receive_dpo.c | 165 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 165 insertions(+) create mode 100644 vpp/vnet/vnet/dpo/receive_dpo.c (limited to 'vpp/vnet/vnet/dpo/receive_dpo.c') diff --git a/vpp/vnet/vnet/dpo/receive_dpo.c b/vpp/vnet/vnet/dpo/receive_dpo.c new file mode 100644 index 00000000..2b2571c6 --- /dev/null +++ b/vpp/vnet/vnet/dpo/receive_dpo.c @@ -0,0 +1,165 @@ +/* + * 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. + */ +/** + * @brief + * The data-path object representing receiveing the packet, i.e. it's for-us + */ +#include +#include +#include + +/** + * @brief pool of all receive DPOs + */ +receive_dpo_t *receive_dpo_pool; + +static receive_dpo_t * +receive_dpo_alloc (void) +{ + receive_dpo_t *rd; + + pool_get_aligned(receive_dpo_pool, rd, CLIB_CACHE_LINE_BYTES); + memset(rd, 0, sizeof(*rd)); + + return (rd); +} + +static receive_dpo_t * +receive_dpo_get_from_dpo (const dpo_id_t *dpo) +{ + ASSERT(DPO_RECEIVE == dpo->dpoi_type); + + return (receive_dpo_get(dpo->dpoi_index)); +} + + +/* + * receive_dpo_add_or_lock + * + * The next_hop address here is used for source address selection in the DP. + * The local adj is added to an interface's receive prefix, the next-hop + * passed here is the local prefix on the same interface. + */ +void +receive_dpo_add_or_lock (dpo_proto_t proto, + u32 sw_if_index, + const ip46_address_t *nh_addr, + dpo_id_t *dpo) +{ + receive_dpo_t *rd; + + rd = receive_dpo_alloc(); + + rd->rd_sw_if_index = sw_if_index; + if (NULL != nh_addr) + { + rd->rd_addr = *nh_addr; + } + + dpo_set(dpo, DPO_RECEIVE, proto, (rd - receive_dpo_pool)); +} + +static void +receive_dpo_lock (dpo_id_t *dpo) +{ + receive_dpo_t *rd; + + rd = receive_dpo_get_from_dpo(dpo); + rd->rd_locks++; +} + +static void +receive_dpo_unlock (dpo_id_t *dpo) +{ + receive_dpo_t *rd; + + rd = receive_dpo_get_from_dpo(dpo); + rd->rd_locks--; + + if (0 == rd->rd_locks) + { + pool_put(receive_dpo_pool, rd); + } +} + +static u8* +format_receive_dpo (u8 *s, va_list *ap) +{ + CLIB_UNUSED(index_t index) = va_arg(*ap, index_t); + CLIB_UNUSED(u32 indent) = va_arg(*ap, u32); + vnet_main_t * vnm = vnet_get_main(); + receive_dpo_t *rd; + + rd = receive_dpo_get(index); + + if (~0 != rd->rd_sw_if_index) + { + return (format(s, "dpo-receive: %U on %U", + format_ip46_address, &rd->rd_addr, IP46_TYPE_ANY, + format_vnet_sw_interface_name, vnm, + vnet_get_sw_interface(vnm, rd->rd_sw_if_index))); + } + else + { + return (format(s, "dpo-receive")); + } +} + +static void +receive_dpo_mem_show (void) +{ + fib_show_memory_usage("Receive", + pool_elts(receive_dpo_pool), + pool_len(receive_dpo_pool), + sizeof(receive_dpo_t)); +} + +const static dpo_vft_t receive_vft = { + .dv_lock = receive_dpo_lock, + .dv_unlock = receive_dpo_unlock, + .dv_format = format_receive_dpo, + .dv_mem_show = receive_dpo_mem_show, +}; + +/** + * @brief The per-protocol VLIB graph nodes that are assigned to a receive + * object. + * + * this means that these graph nodes are ones from which a receive is the + * parent object in the DPO-graph. + */ +const static char* const receive_ip4_nodes[] = +{ + "ip4-local", + NULL, +}; +const static char* const receive_ip6_nodes[] = +{ + "ip6-local", + NULL, +}; + +const static char* const * const receive_nodes[DPO_PROTO_NUM] = +{ + [DPO_PROTO_IP4] = receive_ip4_nodes, + [DPO_PROTO_IP6] = receive_ip6_nodes, + [DPO_PROTO_MPLS] = NULL, +}; + +void +receive_dpo_module_init (void) +{ + dpo_register(DPO_RECEIVE, &receive_vft, receive_nodes); +} -- cgit 1.2.3-korg