From cbe25aab3be72154f2c706c39eeba6a77f34450f Mon Sep 17 00:00:00 2001 From: Neale Ranns Date: Mon, 30 Sep 2019 10:53:31 +0000 Subject: ip: Protocol Independent IP Neighbors Type: feature - ip-neighbour: generic neighbour handling; APIs, DBs, event handling, aging - arp: ARP protocol implementation - ip6-nd; IPv6 neighbor discovery implementation; separate ND, MLD, RA - ip6-link; manage link-local addresses - l2-arp-term; events separated from IP neighbours, since they are not the same. vnet retains just enough education to perform ND/ARP packet construction. arp and ip6-nd to be moved to plugins soon. Change-Id: I88dedd0006b299344f4c7024a0aa5baa6b9a8bbe Signed-off-by: Neale Ranns --- src/vnet/ip/ip46_address.h | 172 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 172 insertions(+) create mode 100644 src/vnet/ip/ip46_address.h (limited to 'src/vnet/ip/ip46_address.h') diff --git a/src/vnet/ip/ip46_address.h b/src/vnet/ip/ip46_address.h new file mode 100644 index 00000000000..f726178ee63 --- /dev/null +++ b/src/vnet/ip/ip46_address.h @@ -0,0 +1,172 @@ +/* + * Copyright (c) 2015-2019 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 included_ip46_address_h +#define included_ip46_address_h + +#include +#include + +typedef enum +{ + IP46_TYPE_ANY, + IP46_TYPE_BOTH = IP46_TYPE_ANY, + IP46_TYPE_IP4, + IP46_TYPE_IP6 +} ip46_type_t; + +#define IP46_N_TYPES (IP46_TYPE_IP6+2) + +#define FOREACH_IP46_TYPE(_type) \ + for (_type = IP46_TYPE_IP4; _type <= IP46_TYPE_IP6; _type++) + +extern u8 *format_ip46_type (u8 * s, va_list * args); + +/* *INDENT-OFF* */ +typedef CLIB_PACKED (union ip46_address_t_ { + struct { + u32 pad[3]; + ip4_address_t ip4; + }; + ip6_address_t ip6; + u8 as_u8[16]; + u64 as_u64[2]; +}) ip46_address_t; +/* *INDENT-ON* */ + + +format_function_t format_ip46_address; + +#define ip46_address_initializer {{{ 0 }}} + +always_inline u8 +ip46_address_is_ip4 (const ip46_address_t * ip46) +{ + return (((ip46)->pad[0] | (ip46)->pad[1] | (ip46)->pad[2]) == 0); +} + +always_inline void +ip46_address_mask_ip4 (ip46_address_t * ip46) +{ + ((ip46)->pad[0] = (ip46)->pad[1] = (ip46)->pad[2] = 0); +} + +always_inline void +ip46_address_set_ip4 (ip46_address_t * ip46, const ip4_address_t * ip) +{ + ip46_address_mask_ip4 (ip46); + ip46->ip4 = *ip; +} + +always_inline void +ip46_address_reset (ip46_address_t * ip46) +{ + ip46->as_u64[0] = ip46->as_u64[1] = 0; +} + +always_inline int +ip46_address_cmp (const ip46_address_t * ip46_1, + const ip46_address_t * ip46_2) +{ + return (memcmp (ip46_1, ip46_2, sizeof (*ip46_1))); +} + +always_inline u8 +ip46_address_is_zero (const ip46_address_t * ip46) +{ + return (ip46->as_u64[0] == 0 && ip46->as_u64[1] == 0); +} + +always_inline u8 +ip46_address_is_equal (const ip46_address_t * ip46_1, + const ip46_address_t * ip46_2) +{ + return ((ip46_1->as_u64[0] == ip46_2->as_u64[0]) && + (ip46_1->as_u64[1] == ip46_2->as_u64[1])); +} + +static_always_inline int +ip4_address_is_equal (const ip4_address_t * ip4_1, + const ip4_address_t * ip4_2) +{ + return (ip4_1->as_u32 == ip4_2->as_u32); +} + +static_always_inline int +ip46_address_is_equal_v4 (const ip46_address_t * ip46, + const ip4_address_t * ip4) +{ + return (ip46->ip4.as_u32 == ip4->as_u32); +} + +static_always_inline int +ip46_address_is_equal_v6 (const ip46_address_t * ip46, + const ip6_address_t * ip6) +{ + return ((ip46->ip6.as_u64[0] == ip6->as_u64[0]) && + (ip46->ip6.as_u64[1] == ip6->as_u64[1])); +} + +static_always_inline void +ip46_address_copy (ip46_address_t * dst, const ip46_address_t * src) +{ + dst->as_u64[0] = src->as_u64[0]; + dst->as_u64[1] = src->as_u64[1]; +} + +static_always_inline void +ip46_address_set_ip6 (ip46_address_t * dst, const ip6_address_t * src) +{ + dst->as_u64[0] = src->as_u64[0]; + dst->as_u64[1] = src->as_u64[1]; +} + +always_inline ip46_address_t +to_ip46 (u32 is_ipv6, u8 * buf) +{ + ip46_address_t ip; + if (is_ipv6) + ip.ip6 = *((ip6_address_t *) buf); + else + ip46_address_set_ip4 (&ip, (ip4_address_t *) buf); + return ip; +} + +always_inline ip46_type_t +ip46_address_get_type (const ip46_address_t * ip) +{ + return (ip46_address_is_ip4 (ip) ? IP46_TYPE_IP4 : IP46_TYPE_IP6); +} + +always_inline uword +ip46_address_is_multicast (const ip46_address_t * a) +{ + return ip46_address_is_ip4 (a) ? ip4_address_is_multicast (&a->ip4) : + ip6_address_is_multicast (&a->ip6); +} + +extern void ip4_address_increment (ip4_address_t * i); +extern void ip6_address_increment (ip6_address_t * i); +extern void ip46_address_increment (ip46_type_t type, ip46_address_t * ip); + +#endif /* included_ip46_address_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ -- cgit 1.2.3-korg