#ifndef __included_nat44_ei_inlines_h__
#define __included_nat44_ei_inlines_h__
+#include <vppinfra/clib.h>
+
+#include <nat/nat44-ei/nat44_ei.h>
#include <nat/nat44-ei/nat44_ei_ha.h>
+always_inline u64
+calc_nat_key (ip4_address_t addr, u16 port, u32 fib_index, u8 proto)
+{
+ ASSERT (fib_index <= (1 << 14) - 1);
+ ASSERT (proto <= (1 << 3) - 1);
+ return (u64) addr.as_u32 << 32 | (u64) port << 16 | fib_index << 3 |
+ (proto & 0x7);
+}
+
+always_inline void
+split_nat_key (u64 key, ip4_address_t *addr, u16 *port, u32 *fib_index,
+ nat_protocol_t *proto)
+{
+ if (addr)
+ {
+ addr->as_u32 = key >> 32;
+ }
+ if (port)
+ {
+ *port = (key >> 16) & (u16) ~0;
+ }
+ if (fib_index)
+ {
+ *fib_index = key >> 3 & ((1 << 13) - 1);
+ }
+ if (proto)
+ {
+ *proto = key & 0x7;
+ }
+}
+
+always_inline void
+init_nat_k (clib_bihash_kv_8_8_t *kv, ip4_address_t addr, u16 port,
+ u32 fib_index, nat_protocol_t proto)
+{
+ kv->key = calc_nat_key (addr, port, fib_index, proto);
+ kv->value = ~0ULL;
+}
+
+always_inline void
+init_nat_kv (clib_bihash_kv_8_8_t *kv, ip4_address_t addr, u16 port,
+ u32 fib_index, nat_protocol_t proto, u32 thread_index,
+ u32 session_index)
+{
+ init_nat_k (kv, addr, port, fib_index, proto);
+ kv->value = (u64) thread_index << 32 | session_index;
+}
+
+always_inline void
+init_nat_i2o_k (clib_bihash_kv_8_8_t *kv, nat44_ei_session_t *s)
+{
+ return init_nat_k (kv, s->in2out.addr, s->in2out.port, s->in2out.fib_index,
+ s->nat_proto);
+}
+
+always_inline void
+init_nat_i2o_kv (clib_bihash_kv_8_8_t *kv, nat44_ei_session_t *s,
+ u32 thread_index, u32 session_index)
+{
+ init_nat_k (kv, s->in2out.addr, s->in2out.port, s->in2out.fib_index,
+ s->nat_proto);
+ kv->value = (u64) thread_index << 32 | session_index;
+}
+
+always_inline void
+init_nat_o2i_k (clib_bihash_kv_8_8_t *kv, nat44_ei_session_t *s)
+{
+ return init_nat_k (kv, s->out2in.addr, s->out2in.port, s->out2in.fib_index,
+ s->nat_proto);
+}
+
+always_inline void
+init_nat_o2i_kv (clib_bihash_kv_8_8_t *kv, nat44_ei_session_t *s,
+ u32 thread_index, u32 session_index)
+{
+ init_nat_k (kv, s->out2in.addr, s->out2in.port, s->out2in.fib_index,
+ s->nat_proto);
+ kv->value = (u64) thread_index << 32 | session_index;
+}
+
+always_inline u32
+nat_value_get_thread_index (clib_bihash_kv_8_8_t *value)
+{
+ return value->value >> 32;
+}
+
+always_inline u32
+nat_value_get_session_index (clib_bihash_kv_8_8_t *value)
+{
+ return value->value & ~(u32) 0;
+}
+
+always_inline u8
+nat44_ei_is_interface_addr (ip4_main_t *im, vlib_node_runtime_t *node,
+ u32 sw_if_index0, u32 ip4_addr)
+{
+ nat44_ei_runtime_t *rt = (nat44_ei_runtime_t *) node->runtime_data;
+ ip4_address_t *first_int_addr;
+
+ if (PREDICT_FALSE (rt->cached_sw_if_index != sw_if_index0))
+ {
+ first_int_addr = ip4_interface_first_address (
+ im, sw_if_index0, 0 /* just want the address */);
+ rt->cached_sw_if_index = sw_if_index0;
+ if (first_int_addr)
+ rt->cached_ip4_address = first_int_addr->as_u32;
+ else
+ rt->cached_ip4_address = 0;
+ }
+
+ if (PREDICT_FALSE (ip4_addr == rt->cached_ip4_address))
+ return 1;
+ else
+ return 0;
+}
+
+/** \brief Per-user LRU list maintenance */
+always_inline void
+nat44_ei_session_update_lru (nat44_ei_main_t *nm, nat44_ei_session_t *s,
+ u32 thread_index)
+{
+ /* don't update too often - timeout is in magnitude of seconds anyway */
+ if (s->last_heard > s->last_lru_update + 1)
+ {
+ clib_dlist_remove (nm->per_thread_data[thread_index].list_pool,
+ s->per_user_index);
+ clib_dlist_addtail (nm->per_thread_data[thread_index].list_pool,
+ s->per_user_list_head_index, s->per_user_index);
+ s->last_lru_update = s->last_heard;
+ }
+}
+
+always_inline void
+nat44_ei_user_session_increment (nat44_ei_main_t *nm, nat44_ei_user_t *u,
+ u8 is_static)
+{
+ if (u->nsessions + u->nstaticsessions < nm->max_translations_per_user)
+ {
+ if (is_static)
+ u->nstaticsessions++;
+ else
+ u->nsessions++;
+ }
+}
+
+always_inline void
+nat44_ei_delete_user_with_no_session (nat44_ei_main_t *nm, nat44_ei_user_t *u,
+ u32 thread_index)
+{
+ clib_bihash_kv_8_8_t kv;
+ nat44_ei_user_key_t u_key;
+ nat44_ei_main_per_thread_data_t *tnm =
+ vec_elt_at_index (nm->per_thread_data, thread_index);
+
+ if (u->nstaticsessions == 0 && u->nsessions == 0)
+ {
+ u_key.addr.as_u32 = u->addr.as_u32;
+ u_key.fib_index = u->fib_index;
+ kv.key = u_key.as_u64;
+ pool_put_index (tnm->list_pool, u->sessions_per_user_list_head_index);
+ pool_put (tnm->users, u);
+ clib_bihash_add_del_8_8 (&tnm->user_hash, &kv, 0);
+ vlib_set_simple_counter (&nm->total_users, thread_index, 0,
+ pool_elts (tnm->users));
+ }
+}
+
static_always_inline u8
-nat44_ei_maximum_sessions_exceeded (snat_main_t *sm, u32 thread_index)
+nat44_ei_maximum_sessions_exceeded (nat44_ei_main_t *nm, u32 thread_index)
{
- if (pool_elts (sm->per_thread_data[thread_index].sessions) >=
- sm->max_translations_per_thread)
+ if (pool_elts (nm->per_thread_data[thread_index].sessions) >=
+ nm->max_translations_per_thread)
return 1;
return 0;
}
always_inline void
-nat44_ei_session_update_counters (snat_session_t *s, f64 now, uword bytes,
+nat44_ei_session_update_counters (nat44_ei_session_t *s, f64 now, uword bytes,
u32 thread_index)
{
s->last_heard = now;
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