/*
- * Copyright (c) 2015 Cisco and/or its affiliates.
+ * 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:
#define included_ip_ip6_h
#include <vlib/mc.h>
+#include <vlib/buffer.h>
+#include <vnet/ethernet/packet.h>
#include <vnet/ip/ip6_packet.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_template.h>
#define IP6_FIB_DEFAULT_HASH_NUM_BUCKETS (64 * 1024)
#define IP6_FIB_DEFAULT_HASH_MEMORY_SIZE (32<<20)
-typedef struct {
+typedef struct
+{
ip6_address_t addr;
u32 dst_address_length;
u32 vrf_index;
} ip6_fib_key_t;
-typedef struct {
+typedef struct
+{
/* Table ID (hash key) for this FIB. */
u32 table_id;
u32 index;
/* flow hash configuration */
- u32 flow_hash_config;
+ flow_hash_config_t flow_hash_config;
} ip6_fib_t;
struct ip6_main_t;
-typedef void (ip6_add_del_route_function_t)
- (struct ip6_main_t * im,
- uword opaque,
- ip6_fib_t * fib,
- u32 flags,
- ip6_address_t * address,
- u32 address_length,
- void * old_result,
- void * new_result);
-
-typedef struct {
- ip6_add_del_route_function_t * function;
- uword required_flags;
- uword function_opaque;
-} ip6_add_del_route_callback_t;
-
typedef void (ip6_add_del_interface_address_function_t)
(struct ip6_main_t * im,
uword opaque,
u32 sw_if_index,
ip6_address_t * address,
- u32 address_length,
- u32 if_address_index,
- u32 is_del);
+ u32 address_length, u32 if_address_index, u32 is_del);
-typedef struct {
- ip6_add_del_interface_address_function_t * function;
+typedef struct
+{
+ ip6_add_del_interface_address_function_t *function;
uword function_opaque;
} ip6_add_del_interface_address_callback_t;
-typedef enum {
- /* First check access list to either permit or deny this
- packet based on classification. */
- IP6_RX_FEATURE_CHECK_ACCESS,
-
- /* RPF check: verify that source address is reachable via
- RX interface or via any interface. */
- IP6_RX_FEATURE_CHECK_SOURCE_REACHABLE_VIA_RX,
- IP6_RX_FEATURE_CHECK_SOURCE_REACHABLE_VIA_ANY,
-
- /* IPSec */
- IP6_RX_FEATURE_IPSEC,
-
- /* Intercept and decap L2TPv3 packets. */
- IP6_RX_FEATURE_L2TPV3,
-
- /* vPath forwarding: won't return to call next feature
- so any feature needed before vPath forwarding must be prior
- to this entry */
- IP6_RX_FEATURE_VPATH,
-
- /* Must be last: perform forwarding lookup. */
- IP6_RX_FEATURE_LOOKUP,
+/**
+ * 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 adjacnecy 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 represenation of a single IP6 table
+ */
+typedef struct ip6_fib_table_instance_t_
+{
+ /* The hash table */
+ BVT (clib_bihash) ip6_hash;
- IP6_N_RX_FEATURE,
-} ip6_rx_feature_type_t;
+ /* 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;
-typedef struct ip6_main_t {
- BVT(clib_bihash) ip6_lookup_table;
+typedef struct ip6_main_t
+{
+ /**
+ * The two FIB tables; fwding and non-fwding
+ */
+ ip6_fib_table_instance_t ip6_table[IP6_FIB_NUM_TABLES];
ip_lookup_main_t lookup_main;
- /* 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];
-
- /* Vector of FIBs. */
- ip6_fib_t * fibs;
+ /* Pool of FIBs. */
+ struct fib_table_t_ *fibs;
+ /* Network byte orders subnet mask for each prefix length */
ip6_address_t fib_masks[129];
/* Table index indexed by software interface. */
- u32 * fib_index_by_sw_if_index;
+ u32 *fib_index_by_sw_if_index;
+
+ /* IP6 enabled count by software interface */
+ u8 *ip_enabled_by_sw_if_index;
/* Hash table mapping table id to fib index.
ID space is not necessarily dense; index space is dense. */
- uword * fib_index_by_table_id;
-
- /* Vector of functions to call when routes are added/deleted. */
- ip6_add_del_route_callback_t * add_del_route_callbacks;
+ uword *fib_index_by_table_id;
/* Hash table mapping interface rewrite adjacency index by sw if index. */
- uword * interface_route_adj_index_by_sw_if_index;
+ uword *interface_route_adj_index_by_sw_if_index;
/* Functions to call when interface address changes. */
- ip6_add_del_interface_address_callback_t * add_del_interface_address_callbacks;
+ ip6_add_del_interface_address_callback_t
+ * add_del_interface_address_callbacks;
/* Template used to generate IP6 neighbor solicitation packets. */
vlib_packet_template_t discover_neighbor_packet_template;
/* Seed for Jenkins hash used to compute ip6 flow hash. */
u32 flow_hash_seed;
- struct {
+ struct
+ {
/* TTL to use for host generated packets. */
u8 ttl;
u8 pad[3];
} host_config;
+
+ /* HBH processing enabled? */
+ u8 hbh_enabled;
} ip6_main_t;
/* Global ip6 main structure. */
/* Global ip6 input node. Errors get attached to ip6 input node. */
extern vlib_node_registration_t ip6_input_node;
extern vlib_node_registration_t ip6_rewrite_node;
+extern vlib_node_registration_t ip6_rewrite_local_node;
extern vlib_node_registration_t ip6_discover_neighbor_node;
+extern vlib_node_registration_t ip6_glean_node;
+extern vlib_node_registration_t ip6_midchain_node;
extern vlib_node_registration_t ip6_icmp_neighbor_discovery_event_node;
/* ipv6 neighbor discovery - timer/event types */
-typedef enum {
+typedef enum
+{
ICMP6_ND_EVENT_INIT,
} ip6_icmp_neighbor_discovery_event_type_t;
-typedef union {
+typedef union
+{
u32 add_del_swindex;
- struct {
+ struct
+ {
u32 up_down_swindex;
u32 fib_index;
} up_down_event;
} ip6_icmp_neighbor_discovery_event_data_t;
-u32 ip6_fib_lookup (ip6_main_t * im, u32 sw_if_index, ip6_address_t * dst);
-u32 ip6_fib_lookup_with_table (ip6_main_t * im, u32 fib_index,
- ip6_address_t * dst);
-ip6_fib_t * find_ip6_fib_by_table_index_or_id (ip6_main_t * im,
- u32 table_index_or_id,
- u32 flags);
-
always_inline uword
-ip6_destination_matches_route (ip6_main_t * im,
- ip6_address_t * key,
- ip6_address_t * dest,
- uword dest_length)
+ip6_destination_matches_route (const ip6_main_t * im,
+ const ip6_address_t * key,
+ const ip6_address_t * dest, uword dest_length)
{
int i;
for (i = 0; i < ARRAY_LEN (key->as_uword); i++)
{
- if ((key->as_uword[i] ^ dest->as_uword[i]) & im->fib_masks[dest_length].as_uword[i])
+ if ((key->as_uword[i] ^ dest->as_uword[i]) & im->
+ fib_masks[dest_length].as_uword[i])
return 0;
}
return 1;
ip6_address_t * key,
ip_interface_address_t * ia)
{
- ip6_address_t * a = ip_interface_address_get_address (&im->lookup_main, ia);
+ ip6_address_t *a = ip_interface_address_get_address (&im->lookup_main, ia);
return ip6_destination_matches_route (im, key, a, ia->address_length);
}
int i;
for (i = 0; i < ARRAY_LEN (key->as_uword); i++)
{
- if ((clib_mem_unaligned (&key->as_uword[i], uword) ^ dest->as_uword[i]) & im->fib_masks[dest_length].as_uword[i])
+ if ((clib_mem_unaligned (&key->as_uword[i], uword) ^ dest->as_uword[i])
+ & im->fib_masks[dest_length].as_uword[i])
return 0;
}
return 1;
}
-always_inline void
-ip6_src_address_for_packet (ip6_main_t * im, vlib_buffer_t * p, ip6_address_t * src, u32 sw_if_index)
-{
- ip_lookup_main_t * lm = &im->lookup_main;
- ip_interface_address_t * ia = ip_interface_address_for_packet (lm, p, sw_if_index);
- ip6_address_t * a = ip_interface_address_get_address (lm, ia);
- *src = a[0];
-}
-
-always_inline u32
-ip6_src_lookup_for_packet (ip6_main_t * im, vlib_buffer_t * b, ip6_header_t * i)
+always_inline int
+ip6_src_address_for_packet (ip_lookup_main_t * lm,
+ u32 sw_if_index, ip6_address_t * src)
{
- if (vnet_buffer (b)->ip.adj_index[VLIB_RX] == ~0)
- vnet_buffer (b)->ip.adj_index[VLIB_RX]
- = ip6_fib_lookup (im, vnet_buffer (b)->sw_if_index[VLIB_RX],
- &i->src_address);
- return vnet_buffer (b)->ip.adj_index[VLIB_RX];
+ u32 if_add_index = lm->if_address_pool_index_by_sw_if_index[sw_if_index];
+ if (PREDICT_TRUE (if_add_index != ~0))
+ {
+ ip_interface_address_t *if_add =
+ pool_elt_at_index (lm->if_address_pool, if_add_index);
+ ip6_address_t *if_ip = ip_interface_address_get_address (lm, if_add);
+ *src = *if_ip;
+ return (0);
+ }
+ else
+ {
+ src->as_u64[0] = 0;
+ src->as_u64[1] = 0;
+ }
+ return (!0);
}
/* Find interface address which matches destination. */
always_inline ip6_address_t *
-ip6_interface_address_matching_destination (ip6_main_t * im, ip6_address_t * dst, u32 sw_if_index,
- ip_interface_address_t ** result_ia)
+ip6_interface_address_matching_destination (ip6_main_t * im,
+ ip6_address_t * dst,
+ u32 sw_if_index,
+ ip_interface_address_t **
+ result_ia)
{
- ip_lookup_main_t * lm = &im->lookup_main;
- ip_interface_address_t * ia;
- ip6_address_t * result = 0;
+ ip_lookup_main_t *lm = &im->lookup_main;
+ ip_interface_address_t *ia;
+ ip6_address_t *result = 0;
- foreach_ip_interface_address (lm, ia, sw_if_index,
+ /* *INDENT-OFF* */
+ foreach_ip_interface_address (lm, ia, sw_if_index,
1 /* honor unnumbered */,
({
ip6_address_t * a = ip_interface_address_get_address (lm, ia);
break;
}
}));
+ /* *INDENT-ON* */
if (result_ia)
*result_ia = result ? ia : 0;
return result;
}
-clib_error_t *
-ip6_add_del_interface_address (vlib_main_t * vm, u32 sw_if_index,
- ip6_address_t * address, u32 address_length,
- u32 is_del);
+clib_error_t *ip6_add_del_interface_address (vlib_main_t * vm,
+ u32 sw_if_index,
+ ip6_address_t * address,
+ u32 address_length, u32 is_del);
+void ip6_sw_interface_enable_disable (u32 sw_if_index, u32 is_enable);
int ip6_address_compare (ip6_address_t * a1, ip6_address_t * a2);
-/* Add/del a route to the FIB. */
-
-#define IP6_ROUTE_FLAG_ADD (0 << 0)
-#define IP6_ROUTE_FLAG_DEL (1 << 0)
-#define IP6_ROUTE_FLAG_TABLE_ID (0 << 1)
-#define IP6_ROUTE_FLAG_FIB_INDEX (1 << 1)
-#define IP6_ROUTE_FLAG_KEEP_OLD_ADJACENCY (1 << 2)
-#define IP6_ROUTE_FLAG_NO_REDISTRIBUTE (1 << 3)
-#define IP6_ROUTE_FLAG_NOT_LAST_IN_GROUP (1 << 4)
-/* Dynamic route created via neighbor discovery. */
-#define IP6_ROUTE_FLAG_NEIGHBOR (1 << 5)
-
-typedef struct {
- /* IP6_ROUTE_FLAG_* */
- u32 flags;
+clib_error_t *ip6_probe_neighbor (vlib_main_t * vm, ip6_address_t * dst,
+ u32 sw_if_index);
- /* Either index of fib or table_id to hash and get fib.
- IP6_ROUTE_FLAG_FIB_INDEX specifies index; otherwise table_id is assumed. */
- u32 table_index_or_table_id;
-
- /* Destination address (prefix) and length. */
- ip6_address_t dst_address;
- u32 dst_address_length;
-
- /* Adjacency to use for this destination. */
- u32 adj_index;
-
- /* If specified adjacencies to add and then
- use for this destination. add_adj/n_add_adj
- are override adj_index if specified. */
- ip_adjacency_t * add_adj;
- u32 n_add_adj;
-} ip6_add_del_route_args_t;
-
-void ip6_add_del_route (ip6_main_t * im, ip6_add_del_route_args_t * args);
-
-void ip6_add_del_route_next_hop (ip6_main_t * im,
- u32 flags,
- ip6_address_t * dst_address,
- u32 dst_address_length,
- ip6_address_t * next_hop,
- u32 next_hop_sw_if_index,
- u32 next_hop_weight, u32 adj_index,
- u32 explicit_fib_index);
-u32
-ip6_get_route (ip6_main_t * im,
- u32 fib_index_or_table_id,
- u32 flags,
- ip6_address_t * address,
- u32 address_length);
-
-void
-ip6_foreach_matching_route (ip6_main_t * im,
- u32 table_index_or_table_id,
- u32 flags,
- ip6_address_t * address,
- u32 address_length,
- ip6_address_t ** results,
- u8 ** result_length);
-
-void ip6_delete_matching_routes (ip6_main_t * im,
- u32 table_index_or_table_id,
- u32 flags,
- ip6_address_t * address,
- u32 address_length);
-
-void ip6_maybe_remap_adjacencies (ip6_main_t * im,
- u32 table_index_or_table_id,
- u32 flags);
-
-void ip6_adjacency_set_interface_route (vnet_main_t * vnm,
- ip_adjacency_t * adj,
- u32 sw_if_index,
- u32 if_address_index);
-
-u32
-vnet_ip6_neighbor_glean_add(u32 fib_index, void * next_hop_arg);
-
-clib_error_t *
-ip6_probe_neighbor (vlib_main_t * vm, ip6_address_t * dst, u32 sw_if_index);
-
-clib_error_t *
-ip6_set_neighbor_limit (u32 neighbor_limit);
+clib_error_t *ip6_set_neighbor_limit (u32 neighbor_limit);
uword
ip6_udp_register_listener (vlib_main_t * vm,
- u16 dst_port,
- u32 next_node_index);
+ u16 dst_port, u32 next_node_index);
-u16 ip6_tcp_udp_icmp_compute_checksum (vlib_main_t * vm, vlib_buffer_t * p0, ip6_header_t * ip0, int *bogus_lengthp);
+u16 ip6_tcp_udp_icmp_compute_checksum (vlib_main_t * vm, vlib_buffer_t * p0,
+ ip6_header_t * ip0,
+ int *bogus_lengthp);
void ip6_register_protocol (u32 protocol, u32 node_index);
serialize_function_t serialize_vnet_ip6_main, unserialize_vnet_ip6_main;
+void ip6_ethernet_update_adjacency (vnet_main_t * vnm,
+ u32 sw_if_index, u32 ai);
+
int
vnet_set_ip6_ethernet_neighbor (vlib_main_t * vm,
- u32 sw_if_index,
- ip6_address_t * a,
- u8 * link_layer_address,
- uword n_bytes_link_layer_address,
- int is_static);
+ u32 sw_if_index,
+ ip6_address_t * a,
+ u8 * link_layer_address,
+ uword n_bytes_link_layer_address,
+ int is_static);
int
vnet_unset_ip6_ethernet_neighbor (vlib_main_t * vm,
- u32 sw_if_index,
- ip6_address_t * a,
- u8 * link_layer_address,
- uword n_bytes_link_layer_address);
-void
-vnet_ip6_fib_init (ip6_main_t * im, u32 fib_index);
-
-void
-ip6_link_local_address_from_ethernet_mac_address (ip6_address_t *ip,
- u8 *mac);
+ u32 sw_if_index,
+ ip6_address_t * a,
+ u8 * link_layer_address,
+ uword n_bytes_link_layer_address);
-void
-ip6_ethernet_mac_address_from_link_local_address (u8 *mac,
- ip6_address_t *ip);
+void
+ip6_link_local_address_from_ethernet_mac_address (ip6_address_t * ip,
+ u8 * mac);
-int vnet_set_ip6_flow_hash (u32 table_id, u32 flow_hash_config);
+void
+ip6_ethernet_mac_address_from_link_local_address (u8 * mac,
+ ip6_address_t * ip);
-int
-ip6_neighbor_ra_config(vlib_main_t * vm, u32 sw_if_index,
- u8 surpress, u8 managed, u8 other,
- u8 ll_option, u8 send_unicast, u8 cease,
- u8 use_lifetime, u32 lifetime,
- u32 initial_count, u32 initial_interval,
- u32 max_interval, u32 min_interval,
- u8 is_no);
+int vnet_set_ip6_flow_hash (u32 table_id,
+ flow_hash_config_t flow_hash_config);
int
-ip6_neighbor_ra_prefix(vlib_main_t * vm, u32 sw_if_index,
- ip6_address_t *prefix_addr, u8 prefix_len,
- u8 use_default, u32 val_lifetime, u32 pref_lifetime,
- u8 no_advertise, u8 off_link, u8 no_autoconfig, u8 no_onlink,
- u8 is_no);
-
-
-clib_error_t *
-enable_ip6_interface(vlib_main_t * vm,
- u32 sw_if_index);
-
-clib_error_t *
-disable_ip6_interface(vlib_main_t * vm,
- u32 sw_if_index);
+ip6_neighbor_ra_config (vlib_main_t * vm, u32 sw_if_index,
+ u8 suppress, u8 managed, u8 other,
+ u8 ll_option, u8 send_unicast, u8 cease,
+ u8 use_lifetime, u32 lifetime,
+ u32 initial_count, u32 initial_interval,
+ u32 max_interval, u32 min_interval, u8 is_no);
int
-ip6_interface_enabled(vlib_main_t * vm,
- u32 sw_if_index);
-
-clib_error_t *
-set_ip6_link_local_address(vlib_main_t * vm,
- u32 sw_if_index,
- ip6_address_t *address,
- u8 address_length);
-
-void vnet_register_ip6_neighbor_resolution_event(vnet_main_t * vnm,
- void * address_arg,
- uword node_index,
- uword type_opaque,
- uword data);
-
-int vnet_set_ip6_classify_intfc (vlib_main_t * vm, u32 sw_if_index,
- u32 table_index);
+ip6_neighbor_ra_prefix (vlib_main_t * vm, u32 sw_if_index,
+ ip6_address_t * prefix_addr, u8 prefix_len,
+ u8 use_default, u32 val_lifetime, u32 pref_lifetime,
+ u8 no_advertise, u8 off_link, u8 no_autoconfig,
+ u8 no_onlink, u8 is_no);
+
+
+clib_error_t *enable_ip6_interface (vlib_main_t * vm, u32 sw_if_index);
+
+clib_error_t *disable_ip6_interface (vlib_main_t * vm, u32 sw_if_index);
+
+int ip6_interface_enabled (vlib_main_t * vm, u32 sw_if_index);
+
+clib_error_t *set_ip6_link_local_address (vlib_main_t * vm,
+ u32 sw_if_index,
+ ip6_address_t * address,
+ u8 address_length);
+
+void vnet_register_ip6_neighbor_resolution_event (vnet_main_t * vnm,
+ void *address_arg,
+ uword node_index,
+ uword type_opaque,
+ uword data);
+
+int vnet_add_del_ip6_nd_change_event (vnet_main_t * vnm,
+ void *data_callback,
+ u32 pid,
+ void *address_arg,
+ uword node_index,
+ uword type_opaque,
+ uword data, int is_add);
+
+int vnet_ip6_nd_term (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_buffer_t * p0,
+ ethernet_header_t * eth,
+ ip6_header_t * ip,
+ u32 sw_if_index, u16 bd_index, u8 shg);
+
+int vnet_set_ip6_classify_intfc (vlib_main_t * vm, u32 sw_if_index,
+ 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 (ip6_header_t * ip, u32 flow_hash_config)
+ip6_compute_flow_hash (const ip6_header_t * ip,
+ flow_hash_config_t flow_hash_config)
{
- tcp_header_t * tcp = (void *) (ip + 1);
- u64 a, b, c;
- u64 t1, t2;
- uword is_tcp_udp = (ip->protocol == IP_PROTOCOL_TCP
- || ip->protocol == IP_PROTOCOL_UDP);
-
- 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;
- b ^= (flow_hash_config & IP_FLOW_HASH_PROTO) ? ip->protocol : 0;
-
- t1 = is_tcp_udp ? tcp->ports.src : 0;
- t2 = is_tcp_udp ? tcp->ports.dst : 0;
-
- t1 = (flow_hash_config & IP_FLOW_HASH_SRC_PORT) ? t1 : 0;
- t2 = (flow_hash_config & IP_FLOW_HASH_DST_PORT) ? t2 : 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;
+ tcp_header_t *tcp = (void *) (ip + 1);
+ u64 a, b, c;
+ u64 t1, t2;
+ uword is_tcp_udp = (ip->protocol == IP_PROTOCOL_TCP
+ || ip->protocol == IP_PROTOCOL_UDP);
+
+ 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;
+ b ^= (flow_hash_config & IP_FLOW_HASH_PROTO) ? ip->protocol : 0;
+
+ t1 = is_tcp_udp ? tcp->ports.src : 0;
+ t2 = is_tcp_udp ? tcp->ports.dst : 0;
+
+ t1 = (flow_hash_config & IP_FLOW_HASH_SRC_PORT) ? t1 : 0;
+ t2 = (flow_hash_config & IP_FLOW_HASH_DST_PORT) ? t2 : 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;
}
+/*
+ * Hop-by-Hop handling
+ */
+typedef struct
+{
+ /* Array of function pointers to HBH option handling routines */
+ int (*options[256]) (vlib_buffer_t * b, ip6_header_t * ip,
+ ip6_hop_by_hop_option_t * opt);
+ u8 *(*trace[256]) (u8 * s, ip6_hop_by_hop_option_t * opt);
+ uword next_override;
+} ip6_hop_by_hop_main_t;
+
+extern ip6_hop_by_hop_main_t ip6_hop_by_hop_main;
+
+int ip6_hbh_register_option (u8 option,
+ int options (vlib_buffer_t * b,
+ ip6_header_t * ip,
+ ip6_hop_by_hop_option_t * opt),
+ u8 * trace (u8 * s,
+ ip6_hop_by_hop_option_t * opt));
+int ip6_hbh_unregister_option (u8 option);
+void ip6_hbh_set_next_override (uword next);
+
+/* Flag used by IOAM code. Classifier sets it pop-hop-by-hop checks it */
+#define OI_DECAP 0x80000000
+
#endif /* included_ip_ip6_h */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
Code Review / vpp.git / blobdiff