#include <nat/nat.h>
#include <nat/nat_ha.h>
-always_inline u32
-ip_proto_to_snat_proto (u8 ip_proto)
+always_inline u64
+calc_nat_key (ip4_address_t addr, u16 port, u32 fib_index, u8 proto)
{
- u32 snat_proto = ~0;
+ 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);
+}
- snat_proto = (ip_proto == IP_PROTOCOL_UDP) ? SNAT_PROTOCOL_UDP : snat_proto;
- snat_proto = (ip_proto == IP_PROTOCOL_TCP) ? SNAT_PROTOCOL_TCP : snat_proto;
- snat_proto =
- (ip_proto == IP_PROTOCOL_ICMP) ? SNAT_PROTOCOL_ICMP : snat_proto;
- snat_proto =
- (ip_proto == IP_PROTOCOL_ICMP6) ? SNAT_PROTOCOL_ICMP : snat_proto;
+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;
+ }
+}
- return snat_proto;
+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 u8
-snat_proto_to_ip_proto (snat_protocol_t snat_proto)
+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, u64 value)
{
- u8 ip_proto = ~0;
+ init_nat_k (kv, addr, port, fib_index, proto);
+ kv->value = value;
+}
- ip_proto = (snat_proto == SNAT_PROTOCOL_UDP) ? IP_PROTOCOL_UDP : ip_proto;
- ip_proto = (snat_proto == SNAT_PROTOCOL_TCP) ? IP_PROTOCOL_TCP : ip_proto;
- ip_proto = (snat_proto == SNAT_PROTOCOL_ICMP) ? IP_PROTOCOL_ICMP : ip_proto;
+always_inline void
+init_nat_i2o_k (clib_bihash_kv_8_8_t * kv, snat_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, snat_session_t * s, u64 value)
+{
+ init_nat_k (kv, s->in2out.addr, s->in2out.port, s->in2out.fib_index,
+ s->nat_proto);
+ kv->value = value;
+}
- return ip_proto;
+always_inline void
+init_nat_o2i_k (clib_bihash_kv_8_8_t * kv, snat_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, snat_session_t * s, u64 value)
+{
+ init_nat_k (kv, s->out2in.addr, s->out2in.port, s->out2in.fib_index,
+ s->nat_proto);
+ kv->value = value;
}
-static_always_inline u8
-icmp_is_error_message (icmp46_header_t * icmp)
+static inline uword
+nat_pre_node_fn_inline (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame, u32 def_next)
{
- switch (icmp->type)
+ u32 n_left_from, *from, *to_next;
+ u16 next_index;
+
+ from = vlib_frame_vector_args (frame);
+ n_left_from = frame->n_vectors;
+ next_index = node->cached_next_index;
+
+ while (n_left_from > 0)
{
- case ICMP4_destination_unreachable:
- case ICMP4_time_exceeded:
- case ICMP4_parameter_problem:
- case ICMP4_source_quench:
- case ICMP4_redirect:
- case ICMP4_alternate_host_address:
- return 1;
+ u32 n_left_to_next;
+
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+
+ while (n_left_from >= 4 && n_left_to_next >= 2)
+ {
+ u32 next0, next1;
+ u32 arc_next0, arc_next1;
+ u32 bi0, bi1;
+ vlib_buffer_t *b0, *b1;
+
+ /* Prefetch next iteration. */
+ {
+ vlib_buffer_t *p2, *p3;
+
+ p2 = vlib_get_buffer (vm, from[2]);
+ p3 = vlib_get_buffer (vm, from[3]);
+
+ vlib_prefetch_buffer_header (p2, LOAD);
+ vlib_prefetch_buffer_header (p3, LOAD);
+
+ CLIB_PREFETCH (p2->data, CLIB_CACHE_LINE_BYTES, LOAD);
+ CLIB_PREFETCH (p3->data, CLIB_CACHE_LINE_BYTES, LOAD);
+ }
+
+ /* speculatively enqueue b0 and b1 to the current next frame */
+ to_next[0] = bi0 = from[0];
+ to_next[1] = bi1 = from[1];
+ from += 2;
+ to_next += 2;
+ n_left_from -= 2;
+ n_left_to_next -= 2;
+
+ b0 = vlib_get_buffer (vm, bi0);
+ b1 = vlib_get_buffer (vm, bi1);
+
+ next0 = def_next;
+ next1 = def_next;
+
+ vnet_feature_next (&arc_next0, b0);
+ vnet_feature_next (&arc_next1, b1);
+
+ vnet_buffer2 (b0)->nat.arc_next = arc_next0;
+ vnet_buffer2 (b1)->nat.arc_next = arc_next1;
+
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)))
+ {
+ if (b0->flags & VLIB_BUFFER_IS_TRACED)
+ {
+ nat_pre_trace_t *t =
+ vlib_add_trace (vm, node, b0, sizeof (*t));
+ t->next_index = next0;
+ t->arc_next_index = arc_next0;
+ }
+ if (b1->flags & VLIB_BUFFER_IS_TRACED)
+ {
+ nat_pre_trace_t *t =
+ vlib_add_trace (vm, node, b0, sizeof (*t));
+ t->next_index = next1;
+ t->arc_next_index = arc_next1;
+ }
+ }
+
+ /* verify speculative enqueues, maybe switch current next frame */
+ vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
+ to_next, n_left_to_next,
+ bi0, bi1, next0, next1);
+ }
+
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ u32 next0;
+ u32 arc_next0;
+ u32 bi0;
+ vlib_buffer_t *b0;
+
+ /* speculatively enqueue b0 to the current next frame */
+ bi0 = from[0];
+ to_next[0] = bi0;
+ from += 1;
+ to_next += 1;
+ n_left_from -= 1;
+ n_left_to_next -= 1;
+
+ b0 = vlib_get_buffer (vm, bi0);
+ next0 = def_next;
+ vnet_feature_next (&arc_next0, b0);
+ vnet_buffer2 (b0)->nat.arc_next = arc_next0;
+
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
+ && (b0->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+ nat_pre_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t));
+ t->next_index = next0;
+ t->arc_next_index = arc_next0;
+ }
+
+ /* verify speculative enqueue, maybe switch current next frame */
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
+ to_next, n_left_to_next,
+ bi0, next0);
+ }
+
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
- return 0;
+
+ return frame->n_vectors;
}
always_inline u8
maximum_sessions_exceeded (snat_main_t * sm, u32 thread_index)
{
if (pool_elts (sm->per_thread_data[thread_index].sessions) >=
- sm->max_translations)
+ sm->max_translations_per_thread)
return 1;
return 0;
clib_dlist_remove (tsm->list_pool, ses->per_user_index);
pool_put_index (tsm->list_pool, ses->per_user_index);
+ if (sm->endpoint_dependent)
+ {
+ clib_dlist_remove (tsm->lru_pool, ses->lru_index);
+ pool_put_index (tsm->lru_pool, ses->lru_index);
+ }
pool_put (tsm->sessions, ses);
vlib_set_simple_counter (&sm->total_sessions, thread_index, 0,
pool_elts (tsm->sessions));
@return 1 if session was closed, otherwise 0
*/
always_inline int
-nat44_set_tcp_session_state_i2o (snat_main_t * sm, snat_session_t * ses,
- tcp_header_t * tcp, u32 thread_index)
+nat44_set_tcp_session_state_i2o (snat_main_t * sm, f64 now,
+ snat_session_t * ses, vlib_buffer_t * b,
+ u32 thread_index)
{
- if ((ses->state == 0) && (tcp->flags & TCP_FLAG_RST))
+ snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
+ u8 tcp_flags = vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags;
+ u32 tcp_ack_number = vnet_buffer (b)->ip.reass.tcp_ack_number;
+ u32 tcp_seq_number = vnet_buffer (b)->ip.reass.tcp_seq_number;
+ if ((ses->state == 0) && (tcp_flags & TCP_FLAG_RST))
ses->state = NAT44_SES_RST;
- if ((ses->state == NAT44_SES_RST) && !(tcp->flags & TCP_FLAG_RST))
+ if ((ses->state == NAT44_SES_RST) && !(tcp_flags & TCP_FLAG_RST))
ses->state = 0;
- if ((tcp->flags & TCP_FLAG_ACK) && (ses->state & NAT44_SES_I2O_SYN) &&
+ if ((tcp_flags & TCP_FLAG_ACK) && (ses->state & NAT44_SES_I2O_SYN) &&
(ses->state & NAT44_SES_O2I_SYN))
ses->state = 0;
- if (tcp->flags & TCP_FLAG_SYN)
+ if (tcp_flags & TCP_FLAG_SYN)
ses->state |= NAT44_SES_I2O_SYN;
- if (tcp->flags & TCP_FLAG_FIN)
+ if (tcp_flags & TCP_FLAG_FIN)
{
- ses->i2o_fin_seq = clib_net_to_host_u32 (tcp->seq_number);
+ ses->i2o_fin_seq = clib_net_to_host_u32 (tcp_seq_number);
ses->state |= NAT44_SES_I2O_FIN;
}
- if ((tcp->flags & TCP_FLAG_ACK) && (ses->state & NAT44_SES_O2I_FIN))
+ if ((tcp_flags & TCP_FLAG_ACK) && (ses->state & NAT44_SES_O2I_FIN))
{
- if (clib_net_to_host_u32 (tcp->ack_number) > ses->o2i_fin_seq)
- ses->state |= NAT44_SES_O2I_FIN_ACK;
+ if (clib_net_to_host_u32 (tcp_ack_number) > ses->o2i_fin_seq)
+ {
+ ses->state |= NAT44_SES_O2I_FIN_ACK;
+ if (nat44_is_ses_closed (ses))
+ { // if session is now closed, save the timestamp
+ ses->tcp_closed_timestamp = now + sm->tcp_transitory_timeout;
+ ses->last_lru_update = now;
+ }
+ }
}
- if (nat44_is_ses_closed (ses)
- && !(ses->flags & SNAT_SESSION_FLAG_OUTPUT_FEATURE))
+
+ // move the session to proper LRU
+ if (ses->state)
{
- nat_free_session_data (sm, ses, thread_index, 0);
- nat44_delete_session (sm, ses, thread_index);
- return 1;
+ ses->lru_head_index = tsm->tcp_trans_lru_head_index;
}
+ else
+ {
+ ses->lru_head_index = tsm->tcp_estab_lru_head_index;
+ }
+ clib_dlist_remove (tsm->lru_pool, ses->lru_index);
+ clib_dlist_addtail (tsm->lru_pool, ses->lru_head_index, ses->lru_index);
return 0;
}
always_inline int
-nat44_set_tcp_session_state_o2i (snat_main_t * sm, snat_session_t * ses,
- tcp_header_t * tcp, u32 thread_index)
+nat44_set_tcp_session_state_o2i (snat_main_t * sm, f64 now,
+ snat_session_t * ses, u8 tcp_flags,
+ u32 tcp_ack_number, u32 tcp_seq_number,
+ u32 thread_index)
{
- if ((ses->state == 0) && (tcp->flags & TCP_FLAG_RST))
+ snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
+ if ((ses->state == 0) && (tcp_flags & TCP_FLAG_RST))
ses->state = NAT44_SES_RST;
- if ((ses->state == NAT44_SES_RST) && !(tcp->flags & TCP_FLAG_RST))
+ if ((ses->state == NAT44_SES_RST) && !(tcp_flags & TCP_FLAG_RST))
ses->state = 0;
- if ((tcp->flags & TCP_FLAG_ACK) && (ses->state & NAT44_SES_I2O_SYN) &&
+ if ((tcp_flags & TCP_FLAG_ACK) && (ses->state & NAT44_SES_I2O_SYN) &&
(ses->state & NAT44_SES_O2I_SYN))
ses->state = 0;
- if (tcp->flags & TCP_FLAG_SYN)
+ if (tcp_flags & TCP_FLAG_SYN)
ses->state |= NAT44_SES_O2I_SYN;
- if (tcp->flags & TCP_FLAG_FIN)
+ if (tcp_flags & TCP_FLAG_FIN)
{
- ses->o2i_fin_seq = clib_net_to_host_u32 (tcp->seq_number);
+ ses->o2i_fin_seq = clib_net_to_host_u32 (tcp_seq_number);
ses->state |= NAT44_SES_O2I_FIN;
}
- if ((tcp->flags & TCP_FLAG_ACK) && (ses->state & NAT44_SES_I2O_FIN))
+ if ((tcp_flags & TCP_FLAG_ACK) && (ses->state & NAT44_SES_I2O_FIN))
{
- if (clib_net_to_host_u32 (tcp->ack_number) > ses->i2o_fin_seq)
+ if (clib_net_to_host_u32 (tcp_ack_number) > ses->i2o_fin_seq)
ses->state |= NAT44_SES_I2O_FIN_ACK;
+ if (nat44_is_ses_closed (ses))
+ { // if session is now closed, save the timestamp
+ ses->tcp_closed_timestamp = now + sm->tcp_transitory_timeout;
+ ses->last_lru_update = now;
+ }
}
- if (nat44_is_ses_closed (ses))
+ // move the session to proper LRU
+ if (ses->state)
+ {
+ ses->lru_head_index = tsm->tcp_trans_lru_head_index;
+ }
+ else
{
- nat_free_session_data (sm, ses, thread_index, 0);
- nat44_delete_session (sm, ses, thread_index);
- return 1;
+ ses->lru_head_index = tsm->tcp_estab_lru_head_index;
}
+ clib_dlist_remove (tsm->lru_pool, ses->lru_index);
+ clib_dlist_addtail (tsm->lru_pool, ses->lru_head_index, ses->lru_index);
return 0;
}
always_inline u32
nat44_session_get_timeout (snat_main_t * sm, snat_session_t * s)
{
- switch (s->in2out.protocol)
+ switch (s->nat_proto)
{
- case SNAT_PROTOCOL_ICMP:
+ case NAT_PROTOCOL_ICMP:
return sm->icmp_timeout;
- case SNAT_PROTOCOL_UDP:
+ case NAT_PROTOCOL_UDP:
return sm->udp_timeout;
- case SNAT_PROTOCOL_TCP:
+ case NAT_PROTOCOL_TCP:
{
if (s->state)
return sm->tcp_transitory_timeout;
s->total_pkts++;
s->total_bytes += bytes;
nat_ha_sref (&s->out2in.addr, s->out2in.port, &s->ext_host_addr,
- s->ext_host_port, s->out2in.protocol, s->out2in.fib_index,
+ s->ext_host_port, s->nat_proto, s->out2in.fib_index,
s->total_pkts, s->total_bytes, thread_index,
&s->ha_last_refreshed, now);
}
nat44_session_update_lru (snat_main_t * sm, snat_session_t * s,
u32 thread_index)
{
- clib_dlist_remove (sm->per_thread_data[thread_index].list_pool,
- s->per_user_index);
- clib_dlist_addtail (sm->per_thread_data[thread_index].list_pool,
- s->per_user_list_head_index, s->per_user_index);
+ /* don't update too often - timeout is in magnitude of seconds anyway */
+ if (s->last_heard > s->last_lru_update + 1)
+ {
+ if (!sm->endpoint_dependent)
+ {
+ clib_dlist_remove (sm->per_thread_data[thread_index].list_pool,
+ s->per_user_index);
+ clib_dlist_addtail (sm->per_thread_data[thread_index].list_pool,
+ s->per_user_list_head_index, s->per_user_index);
+ }
+ else
+ {
+ clib_dlist_remove (sm->per_thread_data[thread_index].lru_pool,
+ s->lru_index);
+ clib_dlist_addtail (sm->per_thread_data[thread_index].lru_pool,
+ s->lru_head_index, s->lru_index);
+ }
+ s->last_lru_update = s->last_heard;
+ }
}
always_inline void
-make_ed_kv (clib_bihash_kv_16_8_t * kv, ip4_address_t * l_addr,
- ip4_address_t * r_addr, u8 proto, u32 fib_index, u16 l_port,
- u16 r_port)
+init_ed_k (clib_bihash_kv_16_8_t * kv, ip4_address_t l_addr, u16 l_port,
+ ip4_address_t r_addr, u16 r_port, u32 fib_index, u8 proto)
{
- nat_ed_ses_key_t *key = (nat_ed_ses_key_t *) kv->key;
+ kv->key[0] = (u64) r_addr.as_u32 << 32 | l_addr.as_u32;
+ kv->key[1] =
+ (u64) r_port << 48 | (u64) l_port << 32 | fib_index << 8 | proto;
+}
- key->l_addr.as_u32 = l_addr->as_u32;
- key->r_addr.as_u32 = r_addr->as_u32;
- key->fib_index = fib_index;
- key->proto = proto;
- key->l_port = l_port;
- key->r_port = r_port;
+always_inline void
+init_ed_kv (clib_bihash_kv_16_8_t * kv, ip4_address_t l_addr, u16 l_port,
+ ip4_address_t r_addr, u16 r_port, u32 fib_index, u8 proto,
+ u32 thread_index, u32 session_index)
+{
+ init_ed_k (kv, l_addr, l_port, r_addr, r_port, fib_index, proto);
+ kv->value = (u64) thread_index << 32 | session_index;
+}
- kv->value = ~0ULL;
+always_inline u32
+ed_value_get_thread_index (clib_bihash_kv_16_8_t * value)
+{
+ return value->value >> 32;
}
-always_inline void
-make_sm_kv (clib_bihash_kv_8_8_t * kv, ip4_address_t * addr, u8 proto,
- u32 fib_index, u16 port)
+always_inline u32
+ed_value_get_session_index (clib_bihash_kv_16_8_t * value)
{
- snat_session_key_t key;
+ return value->value & ~(u32) 0;
+}
- key.addr.as_u32 = addr->as_u32;
- key.port = port;
- key.protocol = proto;
- key.fib_index = fib_index;
+always_inline void
+split_ed_value (clib_bihash_kv_16_8_t * value, u32 * thread_index,
+ u32 * session_index)
+{
+ if (thread_index)
+ {
+ *thread_index = ed_value_get_thread_index (value);
+ }
+ if (session_index)
+ {
+ *session_index = ed_value_get_session_index (value);
+ }
+}
- kv->key = key.as_u64;
- kv->value = ~0ULL;
+always_inline void
+split_ed_kv (clib_bihash_kv_16_8_t * kv,
+ ip4_address_t * l_addr, ip4_address_t * r_addr, u8 * proto,
+ u32 * fib_index, u16 * l_port, u16 * r_port)
+{
+ if (l_addr)
+ {
+ l_addr->as_u32 = kv->key[0] & (u32) ~ 0;
+ }
+ if (r_addr)
+ {
+ r_addr->as_u32 = kv->key[0] >> 32;
+ }
+ if (r_port)
+ {
+ *r_port = kv->key[1] >> 48;
+ }
+ if (l_port)
+ {
+ *l_port = (kv->key[1] >> 32) & (u16) ~ 0;
+ }
+ if (fib_index)
+ {
+ *fib_index = (kv->key[1] >> 8) & ((1 << 24) - 1);
+ }
+ if (proto)
+ {
+ *proto = kv->key[1] & (u8) ~ 0;
+ }
}
static_always_inline int
-get_icmp_i2o_ed_key (ip4_header_t * ip0, nat_ed_ses_key_t * p_key0)
+get_icmp_i2o_ed_key (vlib_buffer_t * b, ip4_header_t * ip0, u32 rx_fib_index,
+ u32 thread_index, u32 session_index,
+ nat_protocol_t * nat_proto, u16 * l_port, u16 * r_port,
+ clib_bihash_kv_16_8_t * kv)
{
+ u8 proto;
+ u16 _l_port, _r_port;
+ ip4_address_t *l_addr, *r_addr;
+
icmp46_header_t *icmp0;
- nat_ed_ses_key_t key0;
icmp_echo_header_t *echo0, *inner_echo0 = 0;
ip4_header_t *inner_ip0 = 0;
void *l4_header = 0;
icmp0 = (icmp46_header_t *) ip4_next_header (ip0);
echo0 = (icmp_echo_header_t *) (icmp0 + 1);
- if (!icmp_is_error_message (icmp0))
+ if (!icmp_type_is_error_message
+ (vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags))
{
- key0.proto = IP_PROTOCOL_ICMP;
- key0.l_addr = ip0->src_address;
- key0.r_addr = ip0->dst_address;
- key0.l_port = echo0->identifier;
- key0.r_port = 0;
+ proto = IP_PROTOCOL_ICMP;
+ l_addr = &ip0->src_address;
+ r_addr = &ip0->dst_address;
+ _l_port = vnet_buffer (b)->ip.reass.l4_src_port;
+ _r_port = 0;
}
else
{
inner_ip0 = (ip4_header_t *) (echo0 + 1);
l4_header = ip4_next_header (inner_ip0);
- key0.proto = inner_ip0->protocol;
- key0.r_addr = inner_ip0->src_address;
- key0.l_addr = inner_ip0->dst_address;
- switch (ip_proto_to_snat_proto (inner_ip0->protocol))
+ proto = inner_ip0->protocol;
+ r_addr = &inner_ip0->src_address;
+ l_addr = &inner_ip0->dst_address;
+ switch (ip_proto_to_nat_proto (inner_ip0->protocol))
{
- case SNAT_PROTOCOL_ICMP:
+ case NAT_PROTOCOL_ICMP:
inner_icmp0 = (icmp46_header_t *) l4_header;
inner_echo0 = (icmp_echo_header_t *) (inner_icmp0 + 1);
- key0.r_port = 0;
- key0.l_port = inner_echo0->identifier;
+ _r_port = 0;
+ _l_port = inner_echo0->identifier;
break;
- case SNAT_PROTOCOL_UDP:
- case SNAT_PROTOCOL_TCP:
- key0.l_port = ((tcp_udp_header_t *) l4_header)->dst_port;
- key0.r_port = ((tcp_udp_header_t *) l4_header)->src_port;
+ case NAT_PROTOCOL_UDP:
+ case NAT_PROTOCOL_TCP:
+ _l_port = ((tcp_udp_header_t *) l4_header)->dst_port;
+ _r_port = ((tcp_udp_header_t *) l4_header)->src_port;
break;
default:
return NAT_IN2OUT_ED_ERROR_UNSUPPORTED_PROTOCOL;
}
}
- *p_key0 = key0;
+ init_ed_kv (kv, *l_addr, _l_port, *r_addr, _r_port, rx_fib_index, proto,
+ thread_index, session_index);
+ if (nat_proto)
+ {
+ *nat_proto = ip_proto_to_nat_proto (proto);
+ }
+ if (l_port)
+ {
+ *l_port = _l_port;
+ }
+ if (r_port)
+ {
+ *r_port = _r_port;
+ }
return 0;
}
-
static_always_inline int
-get_icmp_o2i_ed_key (ip4_header_t * ip0, nat_ed_ses_key_t * p_key0)
+get_icmp_o2i_ed_key (vlib_buffer_t * b, ip4_header_t * ip0, u32 rx_fib_index,
+ u32 thread_index, u32 session_index,
+ nat_protocol_t * nat_proto, u16 * l_port, u16 * r_port,
+ clib_bihash_kv_16_8_t * kv)
{
icmp46_header_t *icmp0;
- nat_ed_ses_key_t key0;
+ u8 proto;
+ ip4_address_t *l_addr, *r_addr;
+ u16 _l_port, _r_port;
icmp_echo_header_t *echo0, *inner_echo0 = 0;
ip4_header_t *inner_ip0;
void *l4_header = 0;
icmp0 = (icmp46_header_t *) ip4_next_header (ip0);
echo0 = (icmp_echo_header_t *) (icmp0 + 1);
- if (!icmp_is_error_message (icmp0))
+ if (!icmp_type_is_error_message
+ (vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags))
{
- key0.proto = IP_PROTOCOL_ICMP;
- key0.l_addr = ip0->dst_address;
- key0.r_addr = ip0->src_address;
- key0.l_port = echo0->identifier;
- key0.r_port = 0;
+ proto = IP_PROTOCOL_ICMP;
+ l_addr = &ip0->dst_address;
+ r_addr = &ip0->src_address;
+ _l_port = vnet_buffer (b)->ip.reass.l4_src_port;
+ _r_port = 0;
}
else
{
inner_ip0 = (ip4_header_t *) (echo0 + 1);
l4_header = ip4_next_header (inner_ip0);
- key0.proto = inner_ip0->protocol;
- key0.l_addr = inner_ip0->src_address;
- key0.r_addr = inner_ip0->dst_address;
- switch (ip_proto_to_snat_proto (inner_ip0->protocol))
+ proto = inner_ip0->protocol;
+ l_addr = &inner_ip0->src_address;
+ r_addr = &inner_ip0->dst_address;
+ switch (ip_proto_to_nat_proto (inner_ip0->protocol))
{
- case SNAT_PROTOCOL_ICMP:
+ case NAT_PROTOCOL_ICMP:
inner_icmp0 = (icmp46_header_t *) l4_header;
inner_echo0 = (icmp_echo_header_t *) (inner_icmp0 + 1);
- key0.l_port = inner_echo0->identifier;
- key0.r_port = 0;
+ _l_port = inner_echo0->identifier;
+ _r_port = 0;
break;
- case SNAT_PROTOCOL_UDP:
- case SNAT_PROTOCOL_TCP:
- key0.l_port = ((tcp_udp_header_t *) l4_header)->src_port;
- key0.r_port = ((tcp_udp_header_t *) l4_header)->dst_port;
+ case NAT_PROTOCOL_UDP:
+ case NAT_PROTOCOL_TCP:
+ _l_port = ((tcp_udp_header_t *) l4_header)->src_port;
+ _r_port = ((tcp_udp_header_t *) l4_header)->dst_port;
break;
default:
return -1;
}
}
- *p_key0 = key0;
- return 0;
-}
-
-always_inline void
-mss_clamping (snat_main_t * sm, tcp_header_t * tcp, ip_csum_t * sum)
-{
- u8 *data;
- u8 opt_len, opts_len, kind;
- u16 mss;
-
- if (!(sm->mss_clamping && tcp_syn (tcp)))
- return;
-
- opts_len = (tcp_doff (tcp) << 2) - sizeof (tcp_header_t);
- data = (u8 *) (tcp + 1);
- for (; opts_len > 0; opts_len -= opt_len, data += opt_len)
+ init_ed_kv (kv, *l_addr, _l_port, *r_addr, _r_port, rx_fib_index, proto,
+ thread_index, session_index);
+ if (nat_proto)
{
- kind = data[0];
-
- if (kind == TCP_OPTION_EOL)
- break;
- else if (kind == TCP_OPTION_NOOP)
- {
- opt_len = 1;
- continue;
- }
- else
- {
- if (opts_len < 2)
- return;
- opt_len = data[1];
-
- if (opt_len < 2 || opt_len > opts_len)
- return;
- }
-
- if (kind == TCP_OPTION_MSS)
- {
- mss = *(u16 *) (data + 2);
- if (clib_net_to_host_u16 (mss) > sm->mss_clamping)
- {
- *sum =
- ip_csum_update (*sum, mss, sm->mss_value_net, ip4_header_t,
- length);
- clib_memcpy_fast (data + 2, &sm->mss_value_net, 2);
- }
- return;
- }
+ *nat_proto = ip_proto_to_nat_proto (proto);
+ }
+ if (l_port)
+ {
+ *l_port = _l_port;
+ }
+ if (r_port)
+ {
+ *r_port = _r_port;
}
+ return 0;
}
/**
return 1;
snat_interface_t *i;
- pool_foreach (i, sm->interfaces, (
- {
- /* NAT packet aimed at outside interface */
- if ((nat_interface_is_outside (i))
- && (sw_if_index ==
- i->sw_if_index)) return 0;}
- ));
+ /* *INDENT-OFF* */
+ pool_foreach (i, sm->interfaces, ({
+ /* NAT packet aimed at outside interface */
+ if ((nat_interface_is_outside (i)) && (sw_if_index == i->sw_if_index))
+ return 0;
+ }));
+ /* *INDENT-ON* */
}
return 1;
}
+static inline void
+increment_v4_address (ip4_address_t * a)
+{
+ u32 v;
+
+ v = clib_net_to_host_u32 (a->as_u32) + 1;
+ a->as_u32 = clib_host_to_net_u32 (v);
+}
+
#endif /* __included_nat_inlines_h__ */
/*
Code Review / vpp.git / blobdiff