#include <vnet/ip/ip4_mtrie.h>
#include <vnet/ip/ip4_packet.h>
#include <vnet/ip/lookup.h>
+#include <vnet/ip/ip_feature_registration.h>
typedef struct ip4_fib_t {
/* Hash table for each prefix length mapping. */
uword function_opaque;
} ip4_add_del_interface_address_callback_t;
-typedef enum {
- /* First check access list to either permit or deny this
- packet based on classification. */
- IP4_RX_FEATURE_CHECK_ACCESS,
-
- /* RPF check: verify that source address is reachable via
- RX interface or via any interface. */
- IP4_RX_FEATURE_SOURCE_CHECK_REACHABLE_VIA_RX,
- IP4_RX_FEATURE_SOURCE_CHECK_REACHABLE_VIA_ANY,
-
- /* IPSec */
- IP4_RX_FEATURE_IPSEC,
-
- /* vPath forwarding: won't return to call next feature
- so any feature needed before vPath forwarding must be prior
- to this entry */
- IP4_RX_FEATURE_VPATH,
-
- /* Must be last: perform forwarding lookup. */
- IP4_RX_FEATURE_LOOKUP,
-
- IP4_N_RX_FEATURE,
-} ip4_rx_feature_type_t;
+/**
+ * @brief IPv4 main type.
+ *
+ * State of IPv4 VPP processing including:
+ * - FIBs
+ * - Feature indices used in feature topological sort
+ * - Feature node run time references
+ */
typedef struct ip4_main_t {
ip_lookup_main_t lookup_main;
- /* Vector of FIBs. */
+ /** Vector of FIBs. */
ip4_fib_t * fibs;
u32 fib_masks[33];
- /* Table index indexed by software interface. */
+ /** Table index indexed by software interface. */
u32 * fib_index_by_sw_if_index;
- /* Hash table mapping table id to fib 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. */
+ /** Vector of functions to call when routes are added/deleted. */
ip4_add_del_route_callback_t * add_del_route_callbacks;
- /* Hash table mapping interface route rewrite adjacency index by sw if index. */
+ /** Hash table mapping interface route rewrite adjacency index by sw if index. */
uword * interface_route_adj_index_by_sw_if_index;
- /* Functions to call when interface address changes. */
+ /** Functions to call when interface address changes. */
ip4_add_del_interface_address_callback_t * add_del_interface_address_callbacks;
- /* Template used to generate IP4 ARP packets. */
+ /** Template used to generate IP4 ARP packets. */
vlib_packet_template_t ip4_arp_request_packet_template;
- /* Seed for Jenkins hash used to compute ip4 flow hash. */
+ /** Feature path configuration lists */
+ vnet_ip_feature_registration_t * next_uc_feature;
+ vnet_ip_feature_registration_t * next_mc_feature;
+
+ /** Built-in unicast feature path indice, see @ref ip_feature_init_cast() */
+ u32 ip4_unicast_rx_feature_check_access;
+ /** Built-in unicast feature path indice, see @ref ip_feature_init_cast() */
+ u32 ip4_unicast_rx_feature_source_reachable_via_rx;
+ /** Built-in unicast feature path indice, see @ref ip_feature_init_cast() */
+ u32 ip4_unicast_rx_feature_source_reachable_via_any;
+ /** Built-in unicast feature path indice, see @ref ip_feature_init_cast() */
+ u32 ip4_unicast_rx_feature_policer_classify;
+ /** Built-in unicast feature path indice, see @ref ip_feature_init_cast() */
+ u32 ip4_unicast_rx_feature_ipsec;
+ /** Built-in unicast feature path indice, see @ref ip_feature_init_cast() */
+ u32 ip4_unicast_rx_feature_vpath;
+ /** Built-in unicast feature path indice, see @ref ip_feature_init_cast() */
+ u32 ip4_unicast_rx_feature_lookup;
+ /** Built-in unicast feature path indice, see @ref ip_feature_init_cast() */
+ u32 ip4_unicast_rx_feature_source_and_port_range_check;
+
+ /** Built-in multicast feature path indices */
+ u32 ip4_multicast_rx_feature_vpath;
+ /** Built-in multicast feature path indices */
+ u32 ip4_multicast_rx_feature_lookup;
+
+ /** Save results for show command */
+ char ** feature_nodes[VNET_N_CAST];
+
+ /** Seed for Jenkins hash used to compute ip4 flow hash. */
u32 flow_hash_seed;
+ /** @brief Template information for VPP generated packets */
struct {
- /* TTL to use for host generated packets. */
+ /** TTL to use for host generated packets. */
u8 ttl;
- /* TOS byte to use for host generated packets. */
+ /** TOS byte to use for host generated packets. */
u8 tos;
u8 pad[2];
} host_config;
} ip4_main_t;
-/* Global ip4 main structure. */
+/** Global ip4 main structure. */
extern ip4_main_t ip4_main;
-/* Global ip4 input node. Errors get attached to ip4 input node. */
+#define VNET_IP4_UNICAST_FEATURE_INIT(x,...) \
+ __VA_ARGS__ vnet_ip_feature_registration_t uc_##x; \
+static void __vnet_add_feature_registration_uc_##x (void) \
+ __attribute__((__constructor__)) ; \
+static void __vnet_add_feature_registration_uc_##x (void) \
+{ \
+ ip4_main_t * im = &ip4_main; \
+ uc_##x.next = im->next_uc_feature; \
+ im->next_uc_feature = &uc_##x; \
+} \
+__VA_ARGS__ vnet_ip_feature_registration_t uc_##x
+
+#define VNET_IP4_MULTICAST_FEATURE_INIT(x,...) \
+ __VA_ARGS__ vnet_ip_feature_registration_t mc_##x; \
+static void __vnet_add_feature_registration_mc_##x (void) \
+ __attribute__((__constructor__)) ; \
+static void __vnet_add_feature_registration_mc_##x (void) \
+{ \
+ ip4_main_t * im = &ip4_main; \
+ mc_##x.next = im->next_mc_feature; \
+ im->next_mc_feature = &mc_##x; \
+} \
+__VA_ARGS__ vnet_ip_feature_registration_t mc_##x
+
+
+/** 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_lookup_node;
extern vlib_node_registration_t ip4_rewrite_node;
+extern vlib_node_registration_t ip4_rewrite_local_node;
extern vlib_node_registration_t ip4_arp_node;
u32 ip4_fib_lookup_with_table (ip4_main_t * im, u32 fib_index, ip4_address_t * dst,
uword dest_length)
{ return 0 == ((clib_mem_unaligned (&key->data_u32, u32) ^ dest->data_u32) & im->fib_masks[dest_length]); }
-always_inline void
+always_inline int
ip4_src_address_for_packet (ip4_main_t * im, vlib_buffer_t * p, ip4_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);
+ if (ia == NULL)
+ return -1;
ip4_address_t * a = ip_interface_address_get_address (lm, ia);
*src = a[0];
+ return 0;
}
/* Find interface address which matches destination. */
u32 n_add_adj;
} ip4_add_del_route_args_t;
+/**
+ * \brief Get or create an IPv4 fib.
+ *
+ * Get or create an IPv4 fib with the provided fib ID or index.
+ * The fib ID is a possibly-sparse user-defined value while
+ * the fib index defines the position of the fib in the fib vector.
+ *
+ * \param im
+ * ip4_main pointer.
+ * \param table_index_or_id
+ * The table index if \c IP4_ROUTE_FLAG_FIB_INDEX bit is set in \p flags.
+ * Otherwise, when set to \c ~0, an arbitrary and unused fib ID is picked
+ * and can be retrieved with \c ret->table_id.
+ * Otherwise, the fib ID to be used to retrieve or create the desired fib.
+ * \param flags
+ * Indicates whether \p table_index_or_id is the fib index or ID.
+ * When the bit \c IP4_ROUTE_FLAG_FIB_INDEX is set, \p table_index_or_id
+ * is considered as the fib index, and the fib ID otherwise.
+ * \returns A pointer to the retrieved or created fib.
+ *
+ * \remark When getting a fib with the fib index, the fib MUST already exist.
+ */
ip4_fib_t *
find_ip4_fib_by_table_index_or_id (ip4_main_t * im,
u32 table_index_or_id, u32 flags);
u32 next_hop_weight, u32 adj_index,
u32 explicit_fib_index);
+u32
+ip4_route_get_next_hop_adj (ip4_main_t * im,
+ u32 fib_index,
+ ip4_address_t *next_hop,
+ u32 next_hop_sw_if_index,
+ u32 explicit_fib_index);
+
void *
ip4_get_route (ip4_main_t * im,
u32 fib_index_or_table_id,
u32 sw_if_index,
u32 if_address_index);
+ip4_address_t *
+ip4_interface_first_address (ip4_main_t * im, u32 sw_if_index,
+ ip_interface_address_t ** result_ia);
+
/* 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_tcp_register_listener (vlib_main_t * vm,
- u16 dst_port,
- u32 next_node_index);
uword
ip4_udp_register_listener (vlib_main_t * vm,
u16 dst_port,
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