#define included_ip_ip4_h
#include <vnet/ip/ip4_packet.h>
+#include <vnet/ip/ip_flow_hash.h>
+
#include <vnet/ip/lookup.h>
#include <vnet/ip/ip_interface.h>
#include <vnet/buffer.h>
#include <vnet/feature/feature.h>
#include <vnet/ip/icmp46_packet.h>
-#include <vnet/util/throttle.h>
typedef struct ip4_mfib_t
{
u8 pad[2];
} host_config;
-
- /** Heapsize for the Mtries */
- uword mtrie_heap_size;
-
- /** The memory heap for the mtries */
- void *mtrie_mheap;
-
- /** ARP throttling */
- throttle_t arp_throttle;
-
} ip4_main_t;
#define ARP_THROTTLE_BITS (512)
return ip4_destination_matches_route (im, key, a, ia->address_length);
}
-always_inline int
-ip4_src_address_for_packet (ip_lookup_main_t * lm,
- u32 sw_if_index, ip4_address_t * src)
-{
- 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);
- ip4_address_t *if_ip = ip_interface_address_get_address (lm, if_add);
- *src = *if_ip;
- return 0;
- }
- else
- {
- src->as_u32 = 0;
- }
- return (!0);
-}
-
/* Find interface address which matches destination. */
always_inline ip4_address_t *
ip4_interface_address_matching_destination (ip4_main_t * im,
serialize_function_t serialize_vnet_ip4_main, unserialize_vnet_ip4_main;
-int vnet_set_ip4_flow_hash (u32 table_id,
- flow_hash_config_t flow_hash_config);
-
int vnet_set_ip4_classify_intfc (vlib_main_t * vm, u32 sw_if_index,
u32 table_index);
void ip4_punt_redirect_del (u32 rx_sw_if_index);
-/* Compute flow hash. We'll use it to select which adjacency to use for this
- flow. And other things. */
-always_inline u32
-ip4_compute_flow_hash (const ip4_header_t * ip,
- flow_hash_config_t flow_hash_config)
-{
- tcp_header_t *tcp = (void *) (ip + 1);
- u32 a, b, c, t1, t2;
- uword is_tcp_udp = (ip->protocol == IP_PROTOCOL_TCP
- || ip->protocol == IP_PROTOCOL_UDP);
-
- t1 = (flow_hash_config & IP_FLOW_HASH_SRC_ADDR)
- ? ip->src_address.data_u32 : 0;
- t2 = (flow_hash_config & IP_FLOW_HASH_DST_ADDR)
- ? ip->dst_address.data_u32 : 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) ? ip->protocol : 0;
- c = (flow_hash_config & IP_FLOW_HASH_REVERSE_SRC_DST) ?
- (t1 << 16) | t2 : (t2 << 16) | t1;
-
- hash_v3_mix32 (a, b, c);
- hash_v3_finalize32 (a, b, c);
-
- return c;
-}
void
ip4_forward_next_trace (vlib_main_t * vm,
u32 ip4_tcp_udp_validate_checksum (vlib_main_t * vm, vlib_buffer_t * p0);
-#define IP_DF 0x4000 /* don't fragment */
-
-always_inline void *
-vlib_buffer_push_ip4_custom (vlib_main_t * vm, vlib_buffer_t * b,
- ip4_address_t * src, ip4_address_t * dst,
- int proto, u8 csum_offload, u8 is_df)
-{
- ip4_header_t *ih;
-
- /* make some room */
- ih = vlib_buffer_push_uninit (b, sizeof (ip4_header_t));
-
- ih->ip_version_and_header_length = 0x45;
- ih->tos = 0;
- ih->length = clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b));
-
- /* No fragments */
- ih->flags_and_fragment_offset = is_df ? clib_host_to_net_u16 (IP_DF) : 0;
- ih->ttl = 255;
- ih->protocol = proto;
- ih->src_address.as_u32 = src->as_u32;
- ih->dst_address.as_u32 = dst->as_u32;
-
- vnet_buffer (b)->l3_hdr_offset = (u8 *) ih - b->data;
- b->flags |= VNET_BUFFER_F_IS_IP4 | VNET_BUFFER_F_L3_HDR_OFFSET_VALID;
-
- /* Offload ip4 header checksum generation */
- if (csum_offload)
- {
- ih->checksum = 0;
- b->flags |= VNET_BUFFER_F_OFFLOAD_IP_CKSUM;
- }
- else
- ih->checksum = ip4_header_checksum (ih);
-
- return ih;
-}
-
-/**
- * Push IPv4 header to buffer
- *
- * This does not support fragmentation.
- *
- * @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_ip4 (vlib_main_t * vm, vlib_buffer_t * b,
- ip4_address_t * src, ip4_address_t * dst, int proto,
- u8 csum_offload)
-{
- return vlib_buffer_push_ip4_custom (vm, b, src, dst, proto, csum_offload,
- 1 /* is_df */ );
-}
-
always_inline u32
vlib_buffer_get_ip4_fib_index (vlib_buffer_t * b)
{
return (fib_index == (u32) ~ 0) ?
vec_elt (ip4_main.fib_index_by_sw_if_index, sw_if_index) : fib_index;
}
+
#endif /* included_ip_ip4_h */
/*
Code Review / vpp.git / blobdiff