Add VLIB_NODE_FN() macro to simplify multiversioning of node functions - vpp

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author	Damjan Marion <damarion@cisco.com>	2018-05-28 21:26:47 +0200
committer	Florin Coras <florin.coras@gmail.com>	2018-05-29 17:00:26 +0000
commit	812b32dd8f637118bf65de2cdff0e95b421a963b (patch)
tree	184d57889b841958875d57c6503d8bfb96cdaec7 /src/plugins/nat/dslite_dpo.c
parent	04e0bb2ff0f39dab45da01ecdbc7914035a36897 (diff)

Add VLIB_NODE_FN() macro to simplify multiversioning of node functions

Change-Id: Ibab5e27277f618ceb2d543b9d6a1a5f191e7d1db Signed-off-by: Damjan Marion <damarion@cisco.com>

Diffstat (limited to 'src/plugins/nat/dslite_dpo.c')

0 files changed, 0 insertions, 0 deletions

/* * 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. */ #ifndef included_vnet_handoff_h #define included_vnet_handoff_h #include <vlib/vlib.h> #include <vnet/ethernet/ethernet.h> #include <vnet/ip/ip4_packet.h> #include <vnet/ip/ip6_packet.h> #include <vnet/mpls/packet.h> typedef enum { HANDOFF_DISPATCH_NEXT_IP4_INPUT, HANDOFF_DISPATCH_NEXT_IP6_INPUT, HANDOFF_DISPATCH_NEXT_MPLS_INPUT, HANDOFF_DISPATCH_NEXT_ETHERNET_INPUT, HANDOFF_DISPATCH_NEXT_DROP, HANDOFF_DISPATCH_N_NEXT, } handoff_dispatch_next_t; static inline u64 ipv4_get_key (ip4_header_t * ip) { u64 hash_key; hash_key = *((u64 *) (&ip->address_pair)) ^ ip->protocol; return hash_key; } static inline u64 ipv6_get_key (ip6_header_t * ip) { u64 hash_key; hash_key = ip->src_address.as_u64[0] ^ rotate_left (ip->src_address.as_u64[1], 13) ^ rotate_left (ip->dst_address.as_u64[0], 26) ^ rotate_left (ip->dst_address.as_u64[1], 39) ^ ip->protocol; return hash_key; } #define MPLS_BOTTOM_OF_STACK_BIT_MASK 0x00000100U #define MPLS_LABEL_MASK 0xFFFFF000U static inline u64 mpls_get_key (mpls_unicast_header_t * m) { u64 hash_key; u8 ip_ver; /* find the bottom of the MPLS label stack. */ if (PREDICT_TRUE (m->label_exp_s_ttl & clib_net_to_host_u32 (MPLS_BOTTOM_OF_STACK_BIT_MASK))) { goto bottom_lbl_found; } m++; if (PREDICT_TRUE (m->label_exp_s_ttl & clib_net_to_host_u32 (MPLS_BOTTOM_OF_STACK_BIT_MASK))) { goto bottom_lbl_found; } m++; if (m->label_exp_s_ttl & clib_net_to_host_u32 (MPLS_BOTTOM_OF_STACK_BIT_MASK)) { goto bottom_lbl_found; } m++; if (m->label_exp_s_ttl & clib_net_to_host_u32 (MPLS_BOTTOM_OF_STACK_BIT_MASK)) { goto bottom_lbl_found; } m++; if (m->label_exp_s_ttl & clib_net_to_host_u32 (MPLS_BOTTOM_OF_STACK_BIT_MASK)) { goto bottom_lbl_found; } /* the bottom label was not found - use the last label */ hash_key = m->label_exp_s_ttl & clib_net_to_host_u32 (MPLS_LABEL_MASK); return hash_key; bottom_lbl_found: m++; ip_ver = (*((u8 *) m) >> 4); /* find out if it is IPV4 or IPV6 header */ if (PREDICT_TRUE (ip_ver == 4)) { hash_key = ipv4_get_key ((ip4_header_t *) m); } else if (PREDICT_TRUE (ip_ver == 6)) { hash_key = ipv6_get_key ((ip6_header_t *) m); } else { /* use the bottom label */ hash_key = (m - 1)->label_exp_s_ttl & clib_net_to_host_u32 (MPLS_LABEL_MASK); } return hash_key; } static inline u64 eth_get_sym_key (ethernet_header_t * h0) { u64 hash_key; if (PREDICT_TRUE (h0->type) == clib_host_to_net_u16 (ETHERNET_TYPE_IP4)) { ip4_header_t *ip = (ip4_header_t *) (h0 + 1); hash_key = (u64) (ip->src_address.as_u32 ^ ip->dst_address.as_u32 ^ ip->protocol); } else if (h0->type == clib_host_to_net_u16 (ETHERNET_TYPE_IP6)) { ip6_header_t *ip = (ip6_header_t *) (h0 + 1); hash_key = (u64) (ip->src_address.as_u64[0] ^ ip->src_address.as_u64[1] ^ ip->dst_address.as_u64[0] ^ ip->dst_address.as_u64[1] ^ ip->protocol); } else if (h0->type == clib_host_to_net_u16 (ETHERNET_TYPE_MPLS_UNICAST)) { hash_key = mpls_get_key ((mpls_unicast_header_t *) (h0 + 1)); } else if (PREDICT_FALSE ((h0->type == clib_host_to_net_u16 (ETHERNET_TYPE_VLAN)) || (h0->type == clib_host_to_net_u16 (ETHERNET_TYPE_DOT1AD)))) { ethernet_vlan_header_t *outer = (ethernet_vlan_header_t *) (h0 + 1); outer = (outer->type == clib_host_to_net_u16 (ETHERNET_TYPE_VLAN)) ? outer + 1 : outer; if (PREDICT_TRUE (outer->type) == clib_host_to_net_u16 (ETHERNET_TYPE_IP4)) { ip4_header_t *ip = (ip4_header_t *) (outer + 1); hash_key = (u64) (ip->src_address.as_u32 ^ ip->dst_address.as_u32 ^ ip->protocol); } else if (outer->type == clib_host_to_net_u16 (ETHERNET_TYPE_IP6)) { ip6_header_t *ip = (ip6_header_t *) (outer + 1); hash_key = (u64) (ip->src_address.as_u64[0] ^ ip->src_address.as_u64[1] ^ ip->dst_address.as_u64[0] ^ ip->dst_address.as_u64[1] ^ ip->protocol); } else if (outer->type == clib_host_to_net_u16 (ETHERNET_TYPE_MPLS_UNICAST)) { hash_key = mpls_get_key ((mpls_unicast_header_t *) (outer + 1)); } else { hash_key = outer->type; } } else { hash_key = 0; } return hash_key; } static inline u64 eth_get_key (ethernet_header_t * h0) { u64 hash_key; if (PREDICT_TRUE (h0->type) == clib_host_to_net_u16 (ETHERNET_TYPE_IP4)) { hash_key = ipv4_get_key ((ip4_header_t *) (h0 + 1)); } else if (h0->type == clib_host_to_net_u16 (ETHERNET_TYPE_IP6)) { hash_key = ipv6_get_key ((ip6_header_t *) (h0 + 1)); } else if (h0->type == clib_host_to_net_u16 (ETHERNET_TYPE_MPLS_UNICAST)) { hash_key = mpls_get_key ((mpls_unicast_header_t *) (h0 + 1)); } else if ((h0->type == clib_host_to_net_u16 (ETHERNET_TYPE_VLAN)) || (h0->type == clib_host_to_net_u16 (ETHERNET_TYPE_DOT1AD))) { ethernet_vlan_header_t *outer = (ethernet_vlan_header_t *) (h0 + 1); outer = (outer->type == clib_host_to_net_u16 (ETHERNET_TYPE_VLAN)) ? outer + 1 : outer; if (PREDICT_TRUE (outer->type) == clib_host_to_net_u16 (ETHERNET_TYPE_IP4)) { hash_key = ipv4_get_key ((ip4_header_t *) (outer + 1)); } else if (outer->type == clib_host_to_net_u16 (ETHERNET_TYPE_IP6)) { hash_key = ipv6_get_key ((ip6_header_t *) (outer + 1)); } else if (outer->type == clib_host_to_net_u16 (ETHERNET_TYPE_MPLS_UNICAST)) { hash_key = mpls_get_key ((mpls_unicast_header_t *) (outer + 1)); } else { hash_key = outer->type; } } else { hash_key = 0; } return hash_key; } #endif /* included_vnet_handoff_h */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */


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