#ifndef included_ip_ip4_h
#define included_ip_ip4_h
-#include <vnet/ip/ip4_mtrie.h>
#include <vnet/ip/ip4_packet.h>
#include <vnet/ip/lookup.h>
+#include <vnet/ip/ip_interface.h>
+#include <vnet/buffer.h>
#include <vnet/feature/feature.h>
-
-typedef struct ip4_fib_t
-{
- /* Hash table for each prefix length mapping. */
- uword *fib_entry_by_dst_address[33];
-
- /* Mtrie for fast lookups. Hash is used to maintain overlapping prefixes. */
- ip4_fib_mtrie_t mtrie;
-
- /* Table ID (hash key) for this FIB. */
- u32 table_id;
-
- /* Index into FIB vector. */
- u32 index;
-
- /* flow hash configuration */
- flow_hash_config_t flow_hash_config;
-
- /* N-tuple classifier indices */
- u32 fwd_classify_table_index;
- u32 rev_classify_table_index;
-
-} ip4_fib_t;
+#include <vnet/ip/icmp46_packet.h>
+#include <vnet/util/throttle.h>
typedef struct ip4_mfib_t
{
uword function_opaque;
} ip4_add_del_interface_address_callback_t;
+typedef void (ip4_enable_disable_interface_function_t)
+ (struct ip4_main_t * im, uword opaque, u32 sw_if_index, u32 is_enable);
+
+typedef struct
+{
+ ip4_enable_disable_interface_function_t *function;
+ uword function_opaque;
+} ip4_enable_disable_interface_callback_t;
+
+typedef void (ip4_table_bind_function_t)
+ (struct ip4_main_t * im,
+ uword opaque, u32 sw_if_index, u32 new_fib_index, u32 old_fib_index);
+
+typedef struct
+{
+ ip4_table_bind_function_t *function;
+ uword function_opaque;
+} ip4_table_bind_callback_t;
+
/**
* @brief IPv4 main type.
*
/** Vector of FIBs. */
struct fib_table_t_ *fibs;
+ /** Vector of MTries. */
+ struct ip4_fib_t_ *v4_fibs;
+
/** Vector of MFIBs. */
struct mfib_table_t_ *mfibs;
ip4_add_del_interface_address_callback_t
* add_del_interface_address_callbacks;
+ /** Functions to call when interface becomes IPv4 enabled/disable. */
+ ip4_enable_disable_interface_callback_t
+ * enable_disable_interface_callbacks;
+
+ /** Functions to call when interface to table biding changes. */
+ ip4_table_bind_callback_t *table_bind_callbacks;
+
/** Template used to generate IP4 ARP packets. */
vlib_packet_template_t ip4_arp_request_packet_template;
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)
+
/** Global ip4 main structure. */
extern ip4_main_t ip4_main;
+extern char *ip4_error_strings[];
/** Global ip4 input node. Errors get attached to ip4 input node. */
extern vlib_node_registration_t ip4_input_node;
extern vlib_node_registration_t ip4_arp_node;
extern vlib_node_registration_t ip4_glean_node;
extern vlib_node_registration_t ip4_midchain_node;
+extern vlib_node_registration_t ip4_punt_node;
always_inline uword
ip4_destination_matches_route (const ip4_main_t * im,
return ip4_destination_matches_route (im, key, a, ia->address_length);
}
-/* As above but allows for unaligned destinations (e.g. works right from IP header of packet). */
-always_inline uword
-ip4_unaligned_destination_matches_route (ip4_main_t * im,
- ip4_address_t * key,
- ip4_address_t * dest,
- uword dest_length)
-{
- return 0 ==
- ((clib_mem_unaligned (&key->data_u32, u32) ^ dest->
- data_u32) & im->fib_masks[dest_length]);
-}
-
always_inline int
ip4_src_address_for_packet (ip_lookup_main_t * lm,
u32 sw_if_index, ip4_address_t * src)
/* Find interface address which matches destination. */
always_inline ip4_address_t *
ip4_interface_address_matching_destination (ip4_main_t * im,
- ip4_address_t * dst,
+ const ip4_address_t * dst,
u32 sw_if_index,
ip_interface_address_t **
result_ia)
ip4_address_t * address,
u32 address_length, u32 is_del);
+void ip4_directed_broadcast (u32 sw_if_index, u8 enable);
+
void ip4_sw_interface_enable_disable (u32 sw_if_index, u32 is_enable);
int ip4_address_compare (ip4_address_t * a1, ip4_address_t * a2);
-/* Send an ARP request to see if given destination is reachable on given interface. */
-clib_error_t *ip4_probe_neighbor (vlib_main_t * vm, ip4_address_t * dst,
- u32 sw_if_index);
-
-clib_error_t *ip4_set_arp_limit (u32 arp_limit);
-
uword
ip4_udp_register_listener (vlib_main_t * vm,
u16 dst_port, u32 next_node_index);
-void
-ip4_icmp_register_type (vlib_main_t * vm, icmp4_type_t type, u32 node_index);
-
u16 ip4_tcp_udp_compute_checksum (vlib_main_t * vm, vlib_buffer_t * p0,
ip4_header_t * ip0);
void ip4_register_protocol (u32 protocol, u32 node_index);
+void ip4_unregister_protocol (u32 protocolx);
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);
-void ip4_mtrie_init (ip4_fib_mtrie_t * m);
-
int vnet_set_ip4_classify_intfc (vlib_main_t * vm, u32 sw_if_index,
u32 table_index);
+void ip4_punt_policer_add_del (u8 is_add, u32 policer_index);
+
+void ip4_punt_redirect_add (u32 rx_sw_if_index,
+ u32 tx_sw_if_index, ip46_address_t * nh);
+void ip4_punt_redirect_add_paths (u32 rx_sw_if_index,
+ fib_route_path_t * paths);
+
+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
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 = 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;
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)
+{
+ u32 fib_index, sw_if_index;
+ sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_RX];
+ fib_index = vnet_buffer (b)->sw_if_index[VLIB_TX];
+ 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