/* * Copyright (c) 2019 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. */ #ifndef __IP_FLOW_HASH_H__ #define __IP_FLOW_HASH_H__ #include <vnet/ip/ip_types.h> /** Default: 5-tuple + flowlabel without the "reverse" bit */ #define IP_FLOW_HASH_DEFAULT (0x9F) #define foreach_flow_hash_bit_v1 \ _ (src, IP_FLOW_HASH_SRC_ADDR) \ _ (dst, IP_FLOW_HASH_DST_ADDR) \ _ (sport, IP_FLOW_HASH_SRC_PORT) \ _ (dport, IP_FLOW_HASH_DST_PORT) \ _ (proto, IP_FLOW_HASH_PROTO) \ _ (reverse, IP_FLOW_HASH_REVERSE_SRC_DST) \ _ (symmetric, IP_FLOW_HASH_SYMMETRIC) #define foreach_flow_hash_bit \ _ (src, 0, IP_FLOW_HASH_SRC_ADDR) \ _ (dst, 1, IP_FLOW_HASH_DST_ADDR) \ _ (sport, 2, IP_FLOW_HASH_SRC_PORT) \ _ (dport, 3, IP_FLOW_HASH_DST_PORT) \ _ (proto, 4, IP_FLOW_HASH_PROTO) \ _ (reverse, 5, IP_FLOW_HASH_REVERSE_SRC_DST) \ _ (symmetric, 6, IP_FLOW_HASH_SYMMETRIC) \ _ (flowlabel, 7, IP_FLOW_HASH_FL) /** * A flow hash configuration is a mask of the flow hash options */ typedef enum flow_hash_config_t_ { #define _(a, b, c) c = (1 << b), foreach_flow_hash_bit #undef _ } flow_hash_config_t; /* Router ID mixed into the flow hash to prevent network polarisation */ extern u32 ip_flow_hash_router_id; int ip_flow_hash_set (ip_address_family_t af, u32 table_id, flow_hash_config_t flow_hash_config); void ip_flow_hash_router_id_set (u32 router_id); #endif /* __IP_TYPES_H__ */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */