#ifndef included_ip_ip6_h
#define included_ip_ip6_h
+#include <stdbool.h>
+
#include <vlib/buffer.h>
-#include <vnet/ethernet/packet.h>
-#include <vnet/ethernet/mac_address.h>
+
#include <vnet/ip/ip6_packet.h>
#include <vnet/ip/ip46_address.h>
#include <vnet/ip/ip6_hop_by_hop_packet.h>
#include <vnet/ip/lookup.h>
-#include <stdbool.h>
-#include <vppinfra/bihash_24_8.h>
-#include <vppinfra/bihash_40_8.h>
-#include <vppinfra/bihash_template.h>
-#include <vnet/util/radix.h>
-#include <vnet/util/throttle.h>
-
-/*
- * Default size of the ip6 fib hash table
- */
-#define IP6_FIB_DEFAULT_HASH_NUM_BUCKETS (64 * 1024)
-#define IP6_FIB_DEFAULT_HASH_MEMORY_SIZE (32<<20)
+#include <vnet/ip/ip_interface.h>
+#include <vnet/ip/ip_flow_hash.h>
typedef struct
{
uword function_opaque;
} ip6_table_bind_callback_t;
-/**
- * Enumeration of the FIB table instance types
- */
-typedef enum ip6_fib_table_instance_type_t_
-{
- /**
- * This table stores the routes that are used to forward traffic.
- * The key is the prefix, the result the adjacency to forward on.
- */
- IP6_FIB_TABLE_FWDING,
- /**
- * The table that stores ALL routes learned by the DP.
- * Some of these routes may not be ready to install in forwarding
- * at a given time.
- * The key in this table is the prefix, the result is the fib_entry_t
- */
- IP6_FIB_TABLE_NON_FWDING,
-} ip6_fib_table_instance_type_t;
-
-#define IP6_FIB_NUM_TABLES (IP6_FIB_TABLE_NON_FWDING+1)
-
-/**
- * A representation of a single IP6 table
- */
-typedef struct ip6_fib_table_instance_t_
-{
- /* The hash table */
- clib_bihash_24_8_t ip6_hash;
-
- /* bitmap / refcounts / vector of mask widths to search */
- uword *non_empty_dst_address_length_bitmap;
- u8 *prefix_lengths_in_search_order;
- i32 dst_address_length_refcounts[129];
-} ip6_fib_table_instance_t;
-
-/**
- * A representation of a single IP6 mfib table
- */
-typedef struct ip6_mfib_table_instance_t_
-{
- /* The hash table */
- clib_bihash_40_8_t ip6_mhash;
-
- /* bitmap / refcounts / vector of mask widths to search */
- uword *non_empty_dst_address_length_bitmap;
- u16 *prefix_lengths_in_search_order;
- i32 dst_address_length_refcounts[257];
-} ip6_mfib_table_instance_t;
-
typedef struct ip6_main_t
{
- /**
- * The two FIB tables; fwding and non-fwding
- */
- ip6_fib_table_instance_t ip6_table[IP6_FIB_NUM_TABLES];
-
- /**
- * the single MFIB table
- */
- ip6_mfib_table_instance_t ip6_mtable;
-
ip_lookup_main_t lookup_main;
/* Pool of FIBs. */
/** Functions to call when interface to table biding changes. */
ip6_table_bind_callback_t *table_bind_callbacks;
- /* ip6 lookup table config parameters */
- u32 lookup_table_nbuckets;
- uword lookup_table_size;
-
/* Seed for Jenkins hash used to compute ip6 flow hash. */
u32 flow_hash_seed;
/* HBH processing enabled? */
u8 hbh_enabled;
-
- /** ND throttling */
- throttle_t nd_throttle;
} ip6_main_t;
#define ND_THROTTLE_BITS 512
void ip6_sw_interface_enable_disable (u32 sw_if_index, u32 is_enable);
/**
- * @brie get first IPv6 interface address
+ * @brief get first IPv6 interface address
*/
ip6_address_t *ip6_interface_first_address (ip6_main_t * im, u32 sw_if_index);
serialize_function_t serialize_vnet_ip6_main, unserialize_vnet_ip6_main;
-int vnet_set_ip6_flow_hash (u32 table_id,
- flow_hash_config_t flow_hash_config);
-
u8 *format_ip6_forward_next_trace (u8 * s, va_list * args);
u32 ip6_tcp_udp_icmp_validate_checksum (vlib_main_t * vm, vlib_buffer_t * p0);
u32 table_index);
extern vlib_node_registration_t ip6_lookup_node;
-/* Compute flow hash. We'll use it to select which Sponge to use for this
- flow. And other things. */
-always_inline u32
-ip6_compute_flow_hash (const ip6_header_t * ip,
- flow_hash_config_t flow_hash_config)
-{
- tcp_header_t *tcp;
- u64 a, b, c;
- u64 t1, t2;
- uword is_tcp_udp = 0;
- u8 protocol = ip->protocol;
-
- if (PREDICT_TRUE
- ((ip->protocol == IP_PROTOCOL_TCP)
- || (ip->protocol == IP_PROTOCOL_UDP)))
- {
- is_tcp_udp = 1;
- tcp = (void *) (ip + 1);
- }
- else if (ip->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS)
- {
- ip6_hop_by_hop_header_t *hbh = (ip6_hop_by_hop_header_t *) (ip + 1);
- if ((hbh->protocol == IP_PROTOCOL_TCP) ||
- (hbh->protocol == IP_PROTOCOL_UDP))
- {
- is_tcp_udp = 1;
- tcp = (tcp_header_t *) ((u8 *) hbh + ((hbh->length + 1) << 3));
- }
- protocol = hbh->protocol;
- }
-
- t1 = (ip->src_address.as_u64[0] ^ ip->src_address.as_u64[1]);
- t1 = (flow_hash_config & IP_FLOW_HASH_SRC_ADDR) ? t1 : 0;
-
- t2 = (ip->dst_address.as_u64[0] ^ ip->dst_address.as_u64[1]);
- t2 = (flow_hash_config & IP_FLOW_HASH_DST_ADDR) ? t2 : 0;
-
- a = (flow_hash_config & IP_FLOW_HASH_REVERSE_SRC_DST) ? t2 : t1;
- b = (flow_hash_config & IP_FLOW_HASH_REVERSE_SRC_DST) ? t1 : t2;
-
- t1 = is_tcp_udp ? tcp->src : 0;
- t2 = is_tcp_udp ? tcp->dst : 0;
-
- t1 = (flow_hash_config & IP_FLOW_HASH_SRC_PORT) ? t1 : 0;
- t2 = (flow_hash_config & IP_FLOW_HASH_DST_PORT) ? t2 : 0;
-
- if (flow_hash_config & IP_FLOW_HASH_SYMMETRIC)
- {
- if (b < a)
- {
- c = a;
- a = b;
- b = c;
- }
- if (t2 < t1)
- {
- t2 += t1;
- t1 = t2 - t1;
- t2 = t2 - t1;
- }
- }
-
- b ^= (flow_hash_config & IP_FLOW_HASH_PROTO) ? protocol : 0;
- c = (flow_hash_config & IP_FLOW_HASH_REVERSE_SRC_DST) ?
- ((t1 << 16) | t2) : ((t2 << 16) | t1);
-
- hash_mix64 (a, b, c);
- return (u32) c;
-}
-
-/* ip6_locate_header
- *
- * This function is to search for the header specified by the protocol number
- * in find_hdr_type.
- * This is used to locate a specific IPv6 extension header
- * or to find transport layer header.
- * 1. If the find_hdr_type < 0 then it finds and returns the protocol number and
- * offset stored in *offset of the transport or ESP header in the chain if
- * found.
- * 2. If a header with find_hdr_type > 0 protocol number is found then the
- * offset is stored in *offset and protocol number of the header is
- * returned.
- * 3. If find_hdr_type is not found or packet is malformed or
- * it is a non-first fragment -1 is returned.
- */
-always_inline int
-ip6_locate_header (vlib_buffer_t * p0,
- ip6_header_t * ip0, int find_hdr_type, u32 * offset)
-{
- u8 next_proto = ip0->protocol;
- u8 *next_header;
- u8 done = 0;
- u32 cur_offset;
- u8 *temp_nxthdr = 0;
- u32 exthdr_len = 0;
-
- next_header = ip6_next_header (ip0);
- cur_offset = sizeof (ip6_header_t);
- while (1)
- {
- done = (next_proto == find_hdr_type);
- if (PREDICT_FALSE
- (next_header >=
- (u8 *) vlib_buffer_get_current (p0) + p0->current_length))
- {
- //A malicious packet could set an extension header with a too big size
- return (-1);
- }
- if (done)
- break;
- if ((!ip6_ext_hdr (next_proto)) || next_proto == IP_PROTOCOL_IP6_NONXT)
- {
- if (find_hdr_type < 0)
- break;
- return -1;
- }
- if (next_proto == IP_PROTOCOL_IPV6_FRAGMENTATION)
- {
- ip6_frag_hdr_t *frag_hdr = (ip6_frag_hdr_t *) next_header;
- u16 frag_off = ip6_frag_hdr_offset (frag_hdr);
- /* Non first fragment return -1 */
- if (frag_off)
- return (-1);
- exthdr_len = sizeof (ip6_frag_hdr_t);
- temp_nxthdr = next_header + exthdr_len;
- }
- else if (next_proto == IP_PROTOCOL_IPSEC_AH)
- {
- exthdr_len =
- ip6_ext_authhdr_len (((ip6_ext_header_t *) next_header));
- temp_nxthdr = next_header + exthdr_len;
- }
- else
- {
- exthdr_len =
- ip6_ext_header_len (((ip6_ext_header_t *) next_header));
- temp_nxthdr = next_header + exthdr_len;
- }
- next_proto = ((ip6_ext_header_t *) next_header)->next_hdr;
- next_header = temp_nxthdr;
- cur_offset += exthdr_len;
- }
-
- *offset = cur_offset;
- return (next_proto);
-}
-
u8 *format_ip6_hop_by_hop_ext_hdr (u8 * s, va_list * args);
/*
* Hop-by-Hop handling
int ip6_hbh_unregister_option (u8 option);
void ip6_hbh_set_next_override (uword next);
-/**
- * Push IPv6 header to buffer
- *
- * @param vm - vlib_main
- * @param b - buffer to write the header to
- * @param src - source IP
- * @param dst - destination IP
- * @param prot - payload proto
- * @param flow_label - flow label
- *
- * @return - pointer to start of IP header
- */
-always_inline void *
-vlib_buffer_push_ip6_custom (vlib_main_t * vm, vlib_buffer_t * b,
- ip6_address_t * src, ip6_address_t * dst,
- int proto, u32 flow_label)
-{
- ip6_header_t *ip6h;
- u16 payload_length;
-
- /* make some room */
- ip6h = vlib_buffer_push_uninit (b, sizeof (ip6_header_t));
- ASSERT (flow_label < 1 << 20);
- ip6h->ip_version_traffic_class_and_flow_label =
- clib_host_to_net_u32 ((0x6 << 28) | flow_label);
-
- /* calculate ip6 payload length */
- payload_length = vlib_buffer_length_in_chain (vm, b);
- payload_length -= sizeof (*ip6h);
-
- ip6h->payload_length = clib_host_to_net_u16 (payload_length);
-
- ip6h->hop_limit = 0xff;
- ip6h->protocol = proto;
- clib_memcpy_fast (ip6h->src_address.as_u8, src->as_u8,
- sizeof (ip6h->src_address));
- clib_memcpy_fast (ip6h->dst_address.as_u8, dst->as_u8,
- sizeof (ip6h->src_address));
- vnet_buffer (b)->l3_hdr_offset = (u8 *) ip6h - b->data;
- b->flags |= VNET_BUFFER_F_IS_IP6 | VNET_BUFFER_F_L3_HDR_OFFSET_VALID;
-
- return ip6h;
-}
-
-/**
- * Push IPv6 header to buffer
- *
- * @param vm - vlib_main
- * @param b - buffer to write the header to
- * @param src - source IP
- * @param dst - destination IP
- * @param prot - payload proto
- *
- * @return - pointer to start of IP header
- */
-always_inline void *
-vlib_buffer_push_ip6 (vlib_main_t * vm, vlib_buffer_t * b,
- ip6_address_t * src, ip6_address_t * dst, int proto)
-{
- return vlib_buffer_push_ip6_custom (vm, b, src, dst, proto,
- 0 /* flow label */ );
-
-}
-
always_inline u32
vlib_buffer_get_ip6_fib_index (vlib_buffer_t * b)
{
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