/* * Copyright (c) 2017 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 <vnet/ip/ip.h> #include <vnet/fib/fib_table.h> u32 ip_flow_hash_router_id; ethernet_type_t ip_address_family_to_ether_type (ip_address_family_t af) { switch (af) { case AF_IP4: return (ETHERNET_TYPE_IP4); case AF_IP6: return (ETHERNET_TYPE_IP6); } ASSERT (0); return (ETHERNET_TYPE_IP4); } u8 ip_is_zero (ip46_address_t * ip46_address, u8 is_ip4) { if (is_ip4) return (ip46_address->ip4.as_u32 == 0); else return (ip46_address->as_u64[0] == 0 && ip46_address->as_u64[1] == 0); } u8 ip_is_local_host (ip46_address_t * ip46_address, u8 is_ip4) { if (is_ip4) return (ip46_address->ip4.as_u8[0] == 127); else return (ip46_address->as_u64[0] == 0 && clib_net_to_host_u64 (ip46_address->as_u64[1]) == 1); } u8 ip4_is_local_host (ip4_address_t * ip4_address) { return (ip4_address->as_u8[0] == 127); } u8 ip6_is_local_host (ip6_address_t * ip6_address) { return (ip6_address->as_u64[0] == 0 && clib_net_to_host_u64 (ip6_address->as_u64[1]) == 1); } /** * Checks that an ip is local to the requested fib */ u8 ip_is_local (u32 fib_index, ip46_address_t * ip46_address, u8 is_ip4) { fib_node_index_t fei; fib_entry_flag_t flags; fib_prefix_t prefix; /* Check if requester is local */ if (is_ip4) { prefix.fp_len = 32; prefix.fp_proto = FIB_PROTOCOL_IP4; } else { prefix.fp_len = 128; prefix.fp_proto = FIB_PROTOCOL_IP6; } clib_memcpy_fast (&prefix.fp_addr, ip46_address, sizeof (ip46_address_t)); fei = fib_table_lookup (fib_index, &prefix); flags = fib_entry_get_flags (fei); return (flags & FIB_ENTRY_FLAG_LOCAL); } void ip_copy (ip46_address_t * dst, ip46_address_t * src, u8 is_ip4) { if (is_ip4) { ip46_address_mask_ip4 (dst); dst->ip4.as_u32 = src->ip4.as_u32; } else clib_memcpy_fast (&dst->ip6, &src->ip6, sizeof (ip6_address_t)); } void ip_set (ip46_address_t * dst, void *src, u8 is_ip4) { if (is_ip4) { ip46_address_mask_ip4 (dst); dst->ip4.as_u32 = ((ip4_address_t *) src)->as_u32; } else clib_memcpy_fast (&dst->ip6, (ip6_address_t *) src, sizeof (ip6_address_t)); } /* *INDENT-OFF* */ static const char *ip_arc_names[N_IP_FEATURE_LOCATIONS][N_AF][N_SAFI] = { [IP_FEATURE_INPUT] = { [AF_IP4] = { [SAFI_UNICAST] = "ip4-unicast", [SAFI_MULTICAST] = "ip4-multicast", }, [AF_IP6] = { [SAFI_UNICAST] = "ip6-unicast", [SAFI_MULTICAST] = "ip6-multicast", }, }, [IP_FEATURE_OUTPUT] = { [AF_IP4] = { [SAFI_UNICAST] = "ip4-output", [SAFI_MULTICAST] = "ip4-output", }, [AF_IP6] = { [SAFI_UNICAST] = "ip6-output", [SAFI_MULTICAST] = "ip6-output", }, }, [IP_FEATURE_LOCAL] = { [AF_IP4] = { [SAFI_UNICAST] = "ip4-local", [SAFI_MULTICAST] = "ip4-local", }, [AF_IP6] = { [SAFI_UNICAST] = "ip6-local", [SAFI_MULTICAST] = "ip6-local", }, }, [IP_FEATURE_PUNT] = { [AF_IP4] = { [SAFI_UNICAST] = "ip4-punt", [SAFI_MULTICAST] = "ip4-punt", }, [AF_IP6] = { [SAFI_UNICAST] = "ip6-punt", [SAFI_MULTICAST] = "ip6-punt", }, }, [IP_FEATURE_DROP] = { [AF_IP4] = { [SAFI_UNICAST] = "ip4-drop", [SAFI_MULTICAST] = "ip4-drop", }, [AF_IP6] = { [SAFI_UNICAST] = "ip6-drop", [SAFI_MULTICAST] = "ip6-drop", }, }, }; /* *INDENT-ON* */ void ip_feature_enable_disable (ip_address_family_t af, ip_sub_address_family_t safi, ip_feature_location_t loc, const char *feature_name, u32 sw_if_index, int enable, void *feature_config, u32 n_feature_config_bytes) { if (IP_FEATURE_INPUT == loc) { if (N_SAFI == safi) FOR_EACH_IP_ADDRESS_SUB_FAMILY (safi) vnet_feature_enable_disable (ip_arc_names[loc][af][safi], feature_name, sw_if_index, enable, feature_config, n_feature_config_bytes); else vnet_feature_enable_disable (ip_arc_names[loc][af][safi], feature_name, sw_if_index, enable, feature_config, n_feature_config_bytes); } else vnet_feature_enable_disable (ip_arc_names[loc][af][SAFI_UNICAST], feature_name, sw_if_index, enable, feature_config, n_feature_config_bytes); } int ip_flow_hash_set (ip_address_family_t af, u32 table_id, u32 flow_hash_config) { fib_protocol_t fproto; u32 fib_index; fproto = ip_address_family_to_fib_proto (af); fib_index = fib_table_find (fproto, table_id); if (~0 == fib_index) return VNET_API_ERROR_NO_SUCH_FIB; fib_table_set_flow_hash_config (fib_index, fproto, flow_hash_config); return 0; } void ip_flow_hash_router_id_set (u32 router_id) { ip_flow_hash_router_id = router_id; } u8 * format_ip_address_family (u8 * s, va_list * args) { ip_address_family_t af = va_arg (*args, int); // int promo ip_address_family_t); switch (af) { case AF_IP4: return (format (s, "ip4")); case AF_IP6: return (format (s, "ip6")); } return (format (s, "unknown")); } uword unformat_ip_address_family (unformat_input_t * input, va_list * args) { ip_address_family_t *af = va_arg (*args, ip_address_family_t *); if (unformat (input, "ip4") || unformat (input, "ipv4") || unformat (input, "IP4") || unformat (input, "IPv4")) { *af = AF_IP4; return (1); } else if (unformat (input, "ip6") || unformat (input, "ipv6") || unformat (input, "IP6") || unformat (input, "IPv6")) { *af = AF_IP6; return (1); } return (0); } u8 * format_ip_sub_address_family (u8 * s, va_list * args) { ip_sub_address_family_t safi = va_arg (*args, int); // int promo ip_sub_address_family_t); switch (safi) { case SAFI_UNICAST: return (format (s, "unicast")); case SAFI_MULTICAST: return (format (s, "multicast")); } return (format (s, "unknown")); } uword unformat_ip_sub_address_family (unformat_input_t * input, va_list * args) { ip_sub_address_family_t *safi = va_arg (*args, ip_sub_address_family_t *); if (unformat (input, "unicast") || unformat (input, "uni")) { *safi = SAFI_UNICAST; return (1); } else if (unformat (input, "multicast") || unformat (input, "multi")) { *safi = SAFI_MULTICAST; return (1); } return (0); } u8 * format_ip_dscp (u8 * s, va_list * va) { ip_dscp_t dscp = va_arg (*va, u32); // int promotion of u8 switch (dscp) { #define _(n,v) \ case IP_DSCP_##v: \ return (format (s, "%s", #v)); foreach_ip_dscp #undef _ } return (format (s, "unknown")); } uword unformat_ip_dscp (unformat_input_t * input, va_list * args) { ip_dscp_t *dscp = va_arg (*args, ip_dscp_t *); if (0) ; #define _(n,v) \ else if (unformat (input, #v)) \ *dscp = IP_DSCP_##v; foreach_ip_dscp #undef _ else return 0; return 1; } u8 * format_ip_ecn (u8 * s, va_list * va) { ip_ecn_t ecn = va_arg (*va, u32); // int promotion of u8 switch (ecn) { #define _(n,v) \ case IP_ECN_##v: \ return (format (s, "%s", #v)); foreach_ip_ecn #undef _ } return (format (s, "unknown")); } /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */