diff options
Diffstat (limited to 'src/vnet/dpo/l3_proxy_dpo.c')
| -rw-r--r-- | src/vnet/dpo/l3_proxy_dpo.c | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/src/vnet/dpo/l3_proxy_dpo.c b/src/vnet/dpo/l3_proxy_dpo.c new file mode 100644 index 00000000000..ea3db7151d0 --- /dev/null +++ b/src/vnet/dpo/l3_proxy_dpo.c @@ -0,0 +1,175 @@ +/* + * 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 l3_proxying the packet, i.e. it's for-us + */ +#include <vlib/vlib.h> +#include <vnet/ip/ip.h> +#include <vnet/dpo/l3_proxy_dpo.h> + +/** + * @brief pool of all l3_proxy DPOs + */ +l3_proxy_dpo_t *l3_proxy_dpo_pool; + +static l3_proxy_dpo_t * +l3_proxy_dpo_alloc (void) +{ + l3_proxy_dpo_t *l3p; + + pool_get_aligned(l3_proxy_dpo_pool, l3p, CLIB_CACHE_LINE_BYTES); + memset(l3p, 0, sizeof(*l3p)); + + return (l3p); +} + +static l3_proxy_dpo_t * +l3_proxy_dpo_get_from_dpo (const dpo_id_t *dpo) +{ + ASSERT(DPO_L3_PROXY == dpo->dpoi_type); + + return (l3_proxy_dpo_get(dpo->dpoi_index)); +} + + +/* + * l3_proxy_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 l3_proxy prefix, the next-hop + * passed here is the local prefix on the same interface. + */ +void +l3_proxy_dpo_add_or_lock (dpo_proto_t proto, + u32 sw_if_index, + dpo_id_t *dpo) +{ + l3_proxy_dpo_t *l3p; + + l3p = l3_proxy_dpo_alloc(); + + l3p->l3p_sw_if_index = sw_if_index; + + dpo_set(dpo, DPO_L3_PROXY, proto, (l3p - l3_proxy_dpo_pool)); +} + +static void +l3_proxy_dpo_lock (dpo_id_t *dpo) +{ + l3_proxy_dpo_t *l3p; + + l3p = l3_proxy_dpo_get_from_dpo(dpo); + l3p->l3p_locks++; +} + +static void +l3_proxy_dpo_unlock (dpo_id_t *dpo) +{ + l3_proxy_dpo_t *l3p; + + l3p = l3_proxy_dpo_get_from_dpo(dpo); + l3p->l3p_locks--; + + if (0 == l3p->l3p_locks) + { + pool_put(l3_proxy_dpo_pool, l3p); + } +} + +static u32 +l3_proxy_dpo_get_urpf (const dpo_id_t *dpo) +{ + l3_proxy_dpo_t *l3p; + + l3p = l3_proxy_dpo_get_from_dpo(dpo); + + return (l3p->l3p_sw_if_index); +} + +static u8* +format_l3_proxy_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(); + l3_proxy_dpo_t *l3p; + + if (pool_is_free_index(l3_proxy_dpo_pool, index)) + { + return (format(s, "dpo-l3_proxy DELETED")); + } + + l3p = l3_proxy_dpo_get(index); + + if (~0 != l3p->l3p_sw_if_index) + { + return (format(s, "dpo-l3_proxy: %U", + format_vnet_sw_interface_name, vnm, + vnet_get_sw_interface(vnm, l3p->l3p_sw_if_index))); + } + else + { + return (format(s, "dpo-l3-proxy")); + } +} + +static void +l3_proxy_dpo_mem_show (void) +{ + fib_show_memory_usage("L3 Proxy", + pool_elts(l3_proxy_dpo_pool), + pool_len(l3_proxy_dpo_pool), + sizeof(l3_proxy_dpo_t)); +} + +const static dpo_vft_t l3_proxy_vft = { + .dv_lock = l3_proxy_dpo_lock, + .dv_unlock = l3_proxy_dpo_unlock, + .dv_format = format_l3_proxy_dpo, + .dv_get_urpf = l3_proxy_dpo_get_urpf, + .dv_mem_show = l3_proxy_dpo_mem_show, +}; + +/** + * @brief The per-protocol VLIB graph nodes that are assigned to a l3_proxy + * object. + * + * this means that these graph nodes are ones from which a l3_proxy is the + * parent object in the DPO-graph. + */ +const static char* const l3_proxy_ip4_nodes[] = +{ + "ip4-local", + NULL, +}; +const static char* const l3_proxy_ip6_nodes[] = +{ + "ip6-local", + NULL, +}; + +const static char* const * const l3_proxy_nodes[DPO_PROTO_NUM] = +{ + [DPO_PROTO_IP4] = l3_proxy_ip4_nodes, + [DPO_PROTO_IP6] = l3_proxy_ip6_nodes, + [DPO_PROTO_MPLS] = NULL, +}; + +void +l3_proxy_dpo_module_init (void) +{ + dpo_register(DPO_L3_PROXY, &l3_proxy_vft, l3_proxy_nodes); +} |