#include <vnet/ip/ip.h>
#include <vnet/ethernet/ethernet.h>
#include <vnet/fib/ip4_fib.h>
+#include <vnet/udp/udp.h>
#include <vppinfra/error.h>
#include <nat/nat.h>
#include <nat/nat_ipfix_logging.h>
-#include <nat/nat_reass.h>
#include <nat/nat_inlines.h>
-
-#define foreach_nat_in2out_ed_error \
-_(UNSUPPORTED_PROTOCOL, "Unsupported protocol") \
-_(IN2OUT_PACKETS, "Good in2out packets processed") \
-_(OUT_OF_PORTS, "Out of ports") \
-_(BAD_ICMP_TYPE, "unsupported ICMP type") \
-_(MAX_SESSIONS_EXCEEDED, "Maximum sessions exceeded") \
-_(DROP_FRAGMENT, "Drop fragment") \
-_(MAX_REASS, "Maximum reassemblies exceeded") \
-_(MAX_FRAG, "Maximum fragments per reassembly exceeded")
-
-typedef enum
-{
-#define _(sym,str) NAT_IN2OUT_ED_ERROR_##sym,
- foreach_nat_in2out_ed_error
-#undef _
- NAT_IN2OUT_ED_N_ERROR,
-} nat_in2out_ed_error_t;
+#include <nat/nat44_inlines.h>
+#include <nat/nat_syslog.h>
+#include <nat/nat_ha.h>
static char *nat_in2out_ed_error_strings[] = {
#define _(sym,string) string,
#undef _
};
-typedef enum
-{
- NAT_IN2OUT_ED_NEXT_LOOKUP,
- NAT_IN2OUT_ED_NEXT_DROP,
- NAT_IN2OUT_ED_NEXT_ICMP_ERROR,
- NAT_IN2OUT_ED_NEXT_SLOW_PATH,
- NAT_IN2OUT_ED_NEXT_REASS,
- NAT_IN2OUT_ED_N_NEXT,
-} nat_in2out_ed_next_t;
-
typedef struct
{
u32 sw_if_index;
u32 is_slow_path;
} nat_in2out_ed_trace_t;
-vlib_node_registration_t nat44_ed_in2out_node;
-vlib_node_registration_t nat44_ed_in2out_slowpath_node;
-vlib_node_registration_t nat44_ed_in2out_output_node;
-vlib_node_registration_t nat44_ed_in2out_output_slowpath_node;
-vlib_node_registration_t nat44_ed_in2out_reass_node;
-
static u8 *
format_nat_in2out_ed_trace (u8 * s, va_list * args)
{
return s;
}
-static_always_inline int
-icmp_get_ed_key (ip4_header_t * ip0, nat_ed_ses_key_t * p_key0)
-{
- 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;
- icmp46_header_t *inner_icmp0;
-
- icmp0 = (icmp46_header_t *) ip4_next_header (ip0);
- echo0 = (icmp_echo_header_t *) (icmp0 + 1);
-
- if (!icmp_is_error_message (icmp0))
- {
- 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;
- }
- 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))
- {
- case SNAT_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;
- 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;
- break;
- default:
- return NAT_IN2OUT_ED_ERROR_UNSUPPORTED_PROTOCOL;
- }
- }
- *p_key0 = key0;
- return 0;
-}
-
+#ifndef CLIB_MARCH_VARIANT
int
nat44_i2o_ed_is_idle_session_cb (clib_bihash_kv_16_8_t * kv, void *arg)
{
ed_kv.key[0] = ed_key.as_u64[0];
ed_kv.key[1] = ed_key.as_u64[1];
if (clib_bihash_add_del_16_8 (&tsm->out2in_ed, &ed_kv, 0))
- nat_log_warn ("out2in_ed key del failed");
+ nat_elog_warn ("out2in_ed key del failed");
if (snat_is_unk_proto_session (s))
goto delete;
- snat_ipfix_logging_nat44_ses_delete (s->in2out.addr.as_u32,
+ snat_ipfix_logging_nat44_ses_delete (ctx->thread_index,
+ s->in2out.addr.as_u32,
s->out2in.addr.as_u32,
s->in2out.protocol,
s->in2out.port,
s->out2in.port,
s->in2out.fib_index);
+ nat_syslog_nat44_sdel (s->user_index, s->in2out.fib_index,
+ &s->in2out.addr, s->in2out.port,
+ &s->ext_host_nat_addr, s->ext_host_nat_port,
+ &s->out2in.addr, s->out2in.port,
+ &s->ext_host_addr, s->ext_host_port,
+ s->in2out.protocol, is_twice_nat_session (s));
+
+ nat_ha_sdel (&s->out2in.addr, s->out2in.port, &s->ext_host_addr,
+ s->ext_host_port, s->out2in.protocol, s->out2in.fib_index,
+ ctx->thread_index);
+
if (is_twice_nat_session (s))
{
for (i = 0; i < vec_len (sm->twice_nat_addresses); i++)
return 0;
}
+#endif
static inline u32
icmp_in2out_ed_slow_path (snat_main_t * sm, vlib_buffer_t * b0,
next0 = icmp_in2out (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
next0, thread_index, p_s0, 0);
snat_session_t *s0 = *p_s0;
- if (PREDICT_TRUE (next0 != NAT_IN2OUT_ED_NEXT_DROP && s0))
+ if (PREDICT_TRUE (next0 != NAT_NEXT_DROP && s0))
{
/* Accounting */
nat44_session_update_counters (s0, now,
vlib_buffer_length_in_chain
- (sm->vlib_main, b0));
+ (sm->vlib_main, b0), thread_index);
/* Per-user LRU list maintenance */
nat44_session_update_lru (sm, s0, thread_index);
}
};
nat44_is_idle_session_ctx_t ctx;
+ nat44_session_try_cleanup (&key->l_addr, rx_fib_index, thread_index, now);
+
if (PREDICT_FALSE (maximum_sessions_exceeded (sm, thread_index)))
{
b->error = node->errors[NAT_IN2OUT_ED_ERROR_MAX_SESSIONS_EXCEEDED];
- nat_ipfix_logging_max_sessions (sm->max_translations);
- nat_log_notice ("maximum sessions exceeded");
- return NAT_IN2OUT_ED_NEXT_DROP;
+ nat_ipfix_logging_max_sessions (thread_index, sm->max_translations);
+ nat_elog_notice ("maximum sessions exceeded");
+ return NAT_NEXT_DROP;
}
key0.addr = key->l_addr;
sm->port_per_thread,
tsm->snat_thread_index))
{
- nat_log_notice ("addresses exhausted");
+ nat_elog_notice ("addresses exhausted");
b->error = node->errors[NAT_IN2OUT_ED_ERROR_OUT_OF_PORTS];
- return NAT_IN2OUT_ED_NEXT_DROP;
+ return NAT_NEXT_DROP;
}
}
else
is_sm = 1;
}
+ if (proto == SNAT_PROTOCOL_TCP)
+ {
+ if (!tcp_flags_is_init
+ (vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags))
+ {
+ b->error = node->errors[NAT_IN2OUT_ED_ERROR_NON_SYN];
+ return NAT_NEXT_DROP;
+ }
+ }
+
u = nat_user_get_or_create (sm, &key->l_addr, rx_fib_index, thread_index);
if (!u)
{
- nat_log_warn ("create NAT user failed");
+ nat_elog_warn ("create NAT user failed");
if (!is_sm)
snat_free_outside_address_and_port (sm->addresses,
thread_index, &key1);
- return NAT_IN2OUT_ED_NEXT_DROP;
+ return NAT_NEXT_DROP;
}
s = nat_ed_session_alloc (sm, u, thread_index, now);
if (!s)
{
nat44_delete_user_with_no_session (sm, u, thread_index);
- nat_log_warn ("create NAT session failed");
+ nat_elog_warn ("create NAT session failed");
if (!is_sm)
snat_free_outside_address_and_port (sm->addresses,
thread_index, &key1);
- return NAT_IN2OUT_ED_NEXT_DROP;
+ return NAT_NEXT_DROP;
}
user_session_increment (sm, u, is_sm);
if (clib_bihash_add_or_overwrite_stale_16_8 (&tsm->in2out_ed, kv,
nat44_i2o_ed_is_idle_session_cb,
&ctx))
- nat_log_notice ("in2out-ed key add failed");
+ nat_elog_notice ("in2out-ed key add failed");
make_ed_kv (kv, &key1.addr, &key->r_addr, key->proto, s->out2in.fib_index,
key1.port, key->r_port);
if (clib_bihash_add_or_overwrite_stale_16_8 (&tsm->out2in_ed, kv,
nat44_o2i_ed_is_idle_session_cb,
&ctx))
- nat_log_notice ("out2in-ed key add failed");
+ nat_elog_notice ("out2in-ed key add failed");
*sessionp = s;
/* log NAT event */
- snat_ipfix_logging_nat44_ses_create (s->in2out.addr.as_u32,
+ snat_ipfix_logging_nat44_ses_create (thread_index,
+ s->in2out.addr.as_u32,
s->out2in.addr.as_u32,
s->in2out.protocol,
s->in2out.port,
s->out2in.port, s->in2out.fib_index);
+
+ nat_syslog_nat44_sadd (s->user_index, s->in2out.fib_index,
+ &s->in2out.addr, s->in2out.port,
+ &s->ext_host_nat_addr, s->ext_host_nat_port,
+ &s->out2in.addr, s->out2in.port,
+ &s->ext_host_addr, s->ext_host_port,
+ s->in2out.protocol, 0);
+
+ nat_ha_sadd (&s->in2out.addr, s->in2out.port, &s->out2in.addr,
+ s->out2in.port, &s->ext_host_addr, s->ext_host_port,
+ &s->ext_host_nat_addr, s->ext_host_nat_port,
+ s->in2out.protocol, s->in2out.fib_index, s->flags,
+ thread_index, 0);
+
return next;
}
{
nat_ed_ses_key_t key;
clib_bihash_kv_16_8_t kv, value;
- udp_header_t *udp;
snat_session_t *s = 0;
snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
if (ip->protocol == IP_PROTOCOL_ICMP)
{
key.as_u64[0] = key.as_u64[1] = 0;
- if (icmp_get_ed_key (ip, &key))
+ if (get_icmp_i2o_ed_key (b, ip, &key))
return 0;
key.fib_index = 0;
kv.key[0] = key.as_u64[0];
}
else if (ip->protocol == IP_PROTOCOL_UDP || ip->protocol == IP_PROTOCOL_TCP)
{
- udp = ip4_next_header (ip);
make_ed_kv (&kv, &ip->src_address, &ip->dst_address, ip->protocol, 0,
- udp->src_port, udp->dst_port);
+ vnet_buffer (b)->ip.reass.l4_src_port,
+ vnet_buffer (b)->ip.reass.l4_dst_port);
}
else
{
{
if (ip->protocol == IP_PROTOCOL_TCP)
{
- tcp_header_t *tcp = ip4_next_header (ip);
- if (nat44_set_tcp_session_state_i2o (sm, s, tcp, thread_index))
+ if (nat44_set_tcp_session_state_i2o (sm, s, b, thread_index))
return 1;
}
/* Accounting */
nat44_session_update_counters (s, now,
- vlib_buffer_length_in_chain (vm, b));
+ vlib_buffer_length_in_chain (vm, b),
+ thread_index);
/* Per-user LRU list maintenance */
nat44_session_update_lru (sm, s, thread_index);
return 1;
make_ed_kv (&kv, &ip->src_address, &ip->dst_address, proto, tx_fib_index,
src_port, dst_port);
if (!clib_bihash_search_16_8 (&tsm->out2in_ed, &kv, &value))
- return 1;
+ {
+ s = pool_elt_at_index (tsm->sessions, value.value);
+ if (nat44_is_ses_closed (s))
+ {
+ nat_free_session_data (sm, s, thread_index, 0);
+ nat44_delete_session (sm, s, thread_index);
+ }
+ else
+ s->flags |= SNAT_SESSION_FLAG_OUTPUT_FEATURE;
+ return 1;
+ }
/* dst NAT check */
make_ed_kv (&kv, &ip->dst_address, &ip->src_address, proto, rx_fib_index,
return 0;
}
+#ifndef CLIB_MARCH_VARIANT
u32
icmp_match_in2out_ed (snat_main_t * sm, vlib_node_runtime_t * node,
u32 thread_index, vlib_buffer_t * b, ip4_header_t * ip,
u8 * p_proto, snat_session_key_t * p_value,
u8 * p_dont_translate, void *d, void *e)
{
- icmp46_header_t *icmp;
u32 sw_if_index;
u32 rx_fib_index;
nat_ed_ses_key_t key;
int err;
snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
- icmp = (icmp46_header_t *) ip4_next_header (ip);
sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_RX];
rx_fib_index = ip4_fib_table_get_index_for_sw_if_index (sw_if_index);
key.as_u64[0] = key.as_u64[1] = 0;
- err = icmp_get_ed_key (ip, &key);
+ err = get_icmp_i2o_ed_key (b, ip, &key);
if (err != 0)
{
b->error = node->errors[err];
- next = NAT_IN2OUT_ED_NEXT_DROP;
+ next = NAT_NEXT_DROP;
goto out;
}
key.fib_index = rx_fib_index;
{
if (vnet_buffer (b)->sw_if_index[VLIB_TX] != ~0)
{
- if (PREDICT_FALSE (nat44_ed_not_translate_output_feature (sm, ip,
- key.proto,
- key.
- l_port,
- key.
- r_port,
- thread_index,
- sw_if_index,
- vnet_buffer
- (b)->
- sw_if_index
- [VLIB_TX])))
+ if (PREDICT_FALSE
+ (nat44_ed_not_translate_output_feature
+ (sm, ip, key.proto, key.l_port, key.r_port, thread_index,
+ sw_if_index, vnet_buffer (b)->sw_if_index[VLIB_TX])))
{
dont_translate = 1;
goto out;
}
}
- if (PREDICT_FALSE (icmp_is_error_message (icmp)))
+ if (PREDICT_FALSE
+ (icmp_type_is_error_message
+ (vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags)))
{
b->error = node->errors[NAT_IN2OUT_ED_ERROR_BAD_ICMP_TYPE];
- next = NAT_IN2OUT_ED_NEXT_DROP;
+ next = NAT_NEXT_DROP;
goto out;
}
next = slow_path_ed (sm, b, rx_fib_index, &kv, &s, node, next,
thread_index, vlib_time_now (sm->vlib_main));
- if (PREDICT_FALSE (next == NAT_IN2OUT_ED_NEXT_DROP))
+ if (PREDICT_FALSE (next == NAT_NEXT_DROP))
goto out;
if (!s)
}
else
{
- if (PREDICT_FALSE (icmp->type != ICMP4_echo_request &&
- icmp->type != ICMP4_echo_reply &&
- !icmp_is_error_message (icmp)))
+ if (PREDICT_FALSE
+ (vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags !=
+ ICMP4_echo_request
+ && vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags !=
+ ICMP4_echo_reply
+ && !icmp_type_is_error_message (vnet_buffer (b)->ip.
+ reass.icmp_type_or_tcp_flags)))
{
b->error = node->errors[NAT_IN2OUT_ED_ERROR_BAD_ICMP_TYPE];
- next = NAT_IN2OUT_ED_NEXT_DROP;
+ next = NAT_NEXT_DROP;
goto out;
}
*(snat_session_t **) d = s;
return next;
}
+#endif
static snat_session_t *
nat44_ed_in2out_unknown_proto (snat_main_t * sm,
if (PREDICT_FALSE (maximum_sessions_exceeded (sm, thread_index)))
{
b->error = node->errors[NAT_IN2OUT_ED_ERROR_MAX_SESSIONS_EXCEEDED];
- nat_ipfix_logging_max_sessions (sm->max_translations);
- nat_log_notice ("maximum sessions exceeded");
+ nat_ipfix_logging_max_sessions (thread_index, sm->max_translations);
+ nat_elog_notice ("maximum sessions exceeded");
return 0;
}
thread_index);
if (!u)
{
- nat_log_warn ("create NAT user failed");
+ nat_elog_warn ("create NAT user failed");
return 0;
}
if (!s)
{
nat44_delete_user_with_no_session (sm, u, thread_index);
- nat_log_warn ("create NAT session failed");
+ nat_elog_warn ("create NAT session failed");
return 0;
}
rx_fib_index, 0, 0);
s_kv.value = s - tsm->sessions;
if (clib_bihash_add_del_16_8 (&tsm->in2out_ed, &s_kv, 1))
- nat_log_notice ("in2out key add failed");
+ nat_elog_notice ("in2out key add failed");
make_ed_kv (&s_kv, &s->out2in.addr, &ip->dst_address, ip->protocol,
outside_fib_index, 0, 0);
s_kv.value = s - tsm->sessions;
if (clib_bihash_add_del_16_8 (&tsm->out2in_ed, &s_kv, 1))
- nat_log_notice ("out2in key add failed");
+ nat_elog_notice ("out2in key add failed");
}
/* Update IP checksum */
ip->checksum = ip_csum_fold (sum);
/* Accounting */
- nat44_session_update_counters (s, now, vlib_buffer_length_in_chain (vm, b));
+ nat44_session_update_counters (s, now, vlib_buffer_length_in_chain (vm, b),
+ thread_index);
/* Per-user LRU list maintenance */
nat44_session_update_lru (sm, s, thread_index);
int is_output_feature)
{
u32 n_left_from, *from, *to_next, pkts_processed = 0, stats_node_index;
- nat_in2out_ed_next_t next_index;
+ nat_next_t next_index;
snat_main_t *sm = &snat_main;
f64 now = vlib_time_now (vm);
u32 thread_index = vm->thread_index;
snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
+ u32 tcp_packets = 0, udp_packets = 0, icmp_packets = 0, other_packets =
+ 0, def_slow;
+
+ def_slow = is_output_feature ? NAT_NEXT_IN2OUT_ED_OUTPUT_SLOW_PATH :
+ NAT_NEXT_IN2OUT_ED_SLOW_PATH;
- stats_node_index = is_slow_path ? nat44_ed_in2out_slowpath_node.index :
- nat44_ed_in2out_node.index;
+ stats_node_index = is_slow_path ? sm->ed_in2out_slowpath_node_index :
+ sm->ed_in2out_node_index;
from = vlib_frame_vector_args (frame);
n_left_from = frame->n_vectors;
b0 = vlib_get_buffer (vm, bi0);
b1 = vlib_get_buffer (vm, bi1);
- next0 = NAT_IN2OUT_ED_NEXT_LOOKUP;
-
if (is_output_feature)
- iph_offset0 = vnet_buffer (b0)->ip.save_rewrite_length;
+ {
+ // output feature fast path is enabled on the arc
+ // we need new arc_next feature
+ if (PREDICT_TRUE (!is_slow_path))
+ {
+ vnet_feature_next (&nat_buffer_opaque (b0)->arc_next, b0);
+ vnet_feature_next (&nat_buffer_opaque (b1)->arc_next, b1);
+ }
+
+ iph_offset0 = vnet_buffer (b0)->ip.reass.save_rewrite_length;
+ iph_offset1 = vnet_buffer (b1)->ip.reass.save_rewrite_length;
+ }
+
+ next0 = nat_buffer_opaque (b0)->arc_next;
+ next1 = nat_buffer_opaque (b1)->arc_next;
ip0 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b0) +
iph_offset0);
icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded,
ICMP4_time_exceeded_ttl_exceeded_in_transit,
0);
- next0 = NAT_IN2OUT_ED_NEXT_ICMP_ERROR;
+ next0 = NAT_NEXT_ICMP_ERROR;
goto trace00;
}
thread_index, now, vm,
node);
if (!s0)
- next0 = NAT_IN2OUT_ED_NEXT_DROP;
+ next0 = NAT_NEXT_DROP;
+ other_packets++;
goto trace00;
}
next0 = icmp_in2out_ed_slow_path
(sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
next0, now, thread_index, &s0);
+ icmp_packets++;
goto trace00;
}
}
{
if (PREDICT_FALSE (proto0 == ~0))
{
- next0 = NAT_IN2OUT_ED_NEXT_SLOW_PATH;
- goto trace00;
- }
-
- if (ip4_is_fragment (ip0))
- {
- next0 = NAT_IN2OUT_ED_NEXT_REASS;
+ next0 = def_slow;
goto trace00;
}
if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP))
{
- next0 = NAT_IN2OUT_ED_NEXT_SLOW_PATH;
+ next0 = def_slow;
goto trace00;
}
}
make_ed_kv (&kv0, &ip0->src_address, &ip0->dst_address,
- ip0->protocol, rx_fib_index0, udp0->src_port,
- udp0->dst_port);
+ ip0->protocol, rx_fib_index0,
+ vnet_buffer (b0)->ip.reass.l4_src_port,
+ vnet_buffer (b0)->ip.reass.l4_dst_port);
if (clib_bihash_search_16_8 (&tsm->in2out_ed, &kv0, &value0))
{
{
if (PREDICT_FALSE
(nat44_ed_not_translate_output_feature
- (sm, ip0, ip0->protocol, udp0->src_port,
- udp0->dst_port, thread_index, sw_if_index0,
+ (sm, ip0, ip0->protocol,
+ vnet_buffer (b0)->ip.reass.l4_src_port,
+ vnet_buffer (b0)->ip.reass.l4_dst_port,
+ thread_index, sw_if_index0,
vnet_buffer (b0)->sw_if_index[VLIB_TX])))
goto trace00;
+
+ /*
+ * Send DHCP packets to the ipv4 stack, or we won't
+ * be able to use dhcp client on the outside interface
+ */
+ if (PREDICT_FALSE
+ ((b0->flags & VNET_BUFFER_F_LOCALLY_ORIGINATED)
+ && proto0 == SNAT_PROTOCOL_UDP
+ && (vnet_buffer (b0)->ip.reass.l4_dst_port ==
+ clib_host_to_net_u16
+ (UDP_DST_PORT_dhcp_to_server))))
+ goto trace00;
}
else
{
slow_path_ed (sm, b0, rx_fib_index0, &kv0, &s0, node,
next0, thread_index, now);
- if (PREDICT_FALSE (next0 == NAT_IN2OUT_ED_NEXT_DROP))
+ if (PREDICT_FALSE (next0 == NAT_NEXT_DROP))
goto trace00;
if (PREDICT_FALSE (!s0))
}
else
{
- next0 = NAT_IN2OUT_ED_NEXT_SLOW_PATH;
+ next0 = def_slow;
goto trace00;
}
}
dst_address);
ip0->checksum = ip_csum_fold (sum0);
+ old_port0 = vnet_buffer (b0)->ip.reass.l4_src_port;
+
if (PREDICT_TRUE (proto0 == SNAT_PROTOCOL_TCP))
{
- old_port0 = tcp0->src_port;
- new_port0 = tcp0->src_port = s0->out2in.port;
-
- sum0 = tcp0->checksum;
+ if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
+ {
+ new_port0 = udp0->src_port = s0->out2in.port;
+ sum0 = tcp0->checksum;
+ sum0 =
+ ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
+ dst_address);
+ sum0 =
+ ip_csum_update (sum0, old_port0, new_port0, ip4_header_t,
+ length);
+ if (PREDICT_FALSE (is_twice_nat_session (s0)))
+ {
+ sum0 = ip_csum_update (sum0, ip0->dst_address.as_u32,
+ s0->ext_host_addr.as_u32,
+ ip4_header_t, dst_address);
+ sum0 =
+ ip_csum_update (sum0,
+ vnet_buffer (b0)->ip.
+ reass.l4_dst_port, s0->ext_host_port,
+ ip4_header_t, length);
+ tcp0->dst_port = s0->ext_host_port;
+ ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
+ }
+ mss_clamping (sm, tcp0, &sum0);
+ tcp0->checksum = ip_csum_fold (sum0);
+ }
+ tcp_packets++;
+ if (nat44_set_tcp_session_state_i2o (sm, s0, b0, thread_index))
+ goto trace00;
+ }
+ else if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment
+ && udp0->checksum)
+ {
+ new_port0 = udp0->src_port = s0->out2in.port;
+ sum0 = udp0->checksum;
sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
dst_address);
sum0 = ip_csum_update (sum0, old_port0, new_port0, ip4_header_t,
sum0 = ip_csum_update (sum0, ip0->dst_address.as_u32,
s0->ext_host_addr.as_u32,
ip4_header_t, dst_address);
- sum0 = ip_csum_update (sum0, tcp0->dst_port,
- s0->ext_host_port, ip4_header_t,
- length);
- tcp0->dst_port = s0->ext_host_port;
+ sum0 =
+ ip_csum_update (sum0,
+ vnet_buffer (b0)->ip.reass.l4_dst_port,
+ s0->ext_host_port, ip4_header_t, length);
+ udp0->dst_port = s0->ext_host_port;
ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
}
- mss_clamping (sm, tcp0, &sum0);
- tcp0->checksum = ip_csum_fold (sum0);
- if (nat44_set_tcp_session_state_i2o
- (sm, s0, tcp0, thread_index))
- goto trace00;
+ udp0->checksum = ip_csum_fold (sum0);
+ udp_packets++;
}
else
{
- udp0->src_port = s0->out2in.port;
- udp0->checksum = 0;
- if (PREDICT_FALSE (is_twice_nat_session (s0)))
+ if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
{
- udp0->dst_port = s0->ext_host_port;
- ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
+ new_port0 = udp0->src_port = s0->out2in.port;
+ if (PREDICT_FALSE (is_twice_nat_session (s0)))
+ {
+ udp0->dst_port = s0->ext_host_port;
+ ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
+ }
+ udp_packets++;
}
}
/* Accounting */
nat44_session_update_counters (s0, now,
vlib_buffer_length_in_chain (vm,
- b0));
+ b0),
+ thread_index);
/* Per-user LRU list maintenance */
nat44_session_update_lru (sm, s0, thread_index);
t->session_index = s0 - tsm->sessions;
}
- pkts_processed += next0 != NAT_IN2OUT_ED_NEXT_DROP;
-
-
- next1 = NAT_IN2OUT_ED_NEXT_LOOKUP;
-
- if (is_output_feature)
- iph_offset1 = vnet_buffer (b1)->ip.save_rewrite_length;
+ pkts_processed += next0 == nat_buffer_opaque (b0)->arc_next;
ip1 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b1) +
iph_offset1);
icmp4_error_set_vnet_buffer (b1, ICMP4_time_exceeded,
ICMP4_time_exceeded_ttl_exceeded_in_transit,
0);
- next1 = NAT_IN2OUT_ED_NEXT_ICMP_ERROR;
+ next1 = NAT_NEXT_ICMP_ERROR;
goto trace01;
}
{
s1 = nat44_ed_in2out_unknown_proto (sm, b1, ip1,
rx_fib_index1,
- thread_index, now, vm,
- node);
+ thread_index, now,
+ vm, node);
if (!s1)
- next1 = NAT_IN2OUT_ED_NEXT_DROP;
+ next1 = NAT_NEXT_DROP;
+ other_packets++;
goto trace01;
}
if (PREDICT_FALSE (proto1 == SNAT_PROTOCOL_ICMP))
{
next1 = icmp_in2out_ed_slow_path
- (sm, b1, ip1, icmp1, sw_if_index1, rx_fib_index1, node,
- next1, now, thread_index, &s1);
+ (sm, b1, ip1, icmp1, sw_if_index1, rx_fib_index1,
+ node, next1, now, thread_index, &s1);
+ icmp_packets++;
goto trace01;
}
}
{
if (PREDICT_FALSE (proto1 == ~0))
{
- next1 = NAT_IN2OUT_ED_NEXT_SLOW_PATH;
- goto trace01;
- }
-
- if (ip4_is_fragment (ip1))
- {
- next1 = NAT_IN2OUT_ED_NEXT_REASS;
+ next1 = def_slow;
goto trace01;
}
if (PREDICT_FALSE (proto1 == SNAT_PROTOCOL_ICMP))
{
- next1 = NAT_IN2OUT_ED_NEXT_SLOW_PATH;
+ next1 = def_slow;
goto trace01;
}
}
make_ed_kv (&kv1, &ip1->src_address, &ip1->dst_address,
- ip1->protocol, rx_fib_index1, udp1->src_port,
- udp1->dst_port);
+ ip1->protocol, rx_fib_index1,
+ vnet_buffer (b1)->ip.reass.l4_src_port,
+ vnet_buffer (b1)->ip.reass.l4_dst_port);
if (clib_bihash_search_16_8 (&tsm->in2out_ed, &kv1, &value1))
{
{
if (PREDICT_FALSE
(nat44_ed_not_translate_output_feature
- (sm, ip1, ip1->protocol, udp1->src_port,
- udp1->dst_port, thread_index, sw_if_index1,
+ (sm, ip1, ip1->protocol,
+ vnet_buffer (b1)->ip.reass.l4_src_port,
+ vnet_buffer (b1)->ip.reass.l4_dst_port,
+ thread_index, sw_if_index1,
vnet_buffer (b1)->sw_if_index[VLIB_TX])))
goto trace01;
+
+ /*
+ * Send DHCP packets to the ipv4 stack, or we won't
+ * be able to use dhcp client on the outside interface
+ */
+ if (PREDICT_FALSE
+ ((b1->flags & VNET_BUFFER_F_LOCALLY_ORIGINATED)
+ && proto1 == SNAT_PROTOCOL_UDP
+ && (vnet_buffer (b1)->ip.reass.l4_dst_port ==
+ clib_host_to_net_u16
+ (UDP_DST_PORT_dhcp_to_server))))
+ goto trace01;
}
else
{
if (PREDICT_FALSE (nat44_ed_not_translate (sm, node,
sw_if_index1,
- ip1, proto1,
+ ip1,
+ proto1,
rx_fib_index1,
thread_index)))
goto trace01;
slow_path_ed (sm, b1, rx_fib_index1, &kv1, &s1, node,
next1, thread_index, now);
- if (PREDICT_FALSE (next1 == NAT_IN2OUT_ED_NEXT_DROP))
+ if (PREDICT_FALSE (next1 == NAT_NEXT_DROP))
goto trace01;
if (PREDICT_FALSE (!s1))
}
else
{
- next1 = NAT_IN2OUT_ED_NEXT_SLOW_PATH;
+ next1 = def_slow;
goto trace01;
}
}
dst_address);
ip1->checksum = ip_csum_fold (sum1);
+ old_port1 = vnet_buffer (b1)->ip.reass.l4_src_port;
+
if (PREDICT_TRUE (proto1 == SNAT_PROTOCOL_TCP))
{
- old_port1 = tcp1->src_port;
- new_port1 = tcp1->src_port = s1->out2in.port;
+ if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
+ {
+ new_port1 = udp1->src_port = s1->out2in.port;
+ sum1 = tcp1->checksum;
+ sum1 =
+ ip_csum_update (sum1, old_addr1, new_addr1,
+ ip4_header_t, dst_address);
+ sum1 =
+ ip_csum_update (sum1, old_port1, new_port1,
+ ip4_header_t, length);
+ if (PREDICT_FALSE (is_twice_nat_session (s1)))
+ {
+ sum1 =
+ ip_csum_update (sum1, ip1->dst_address.as_u32,
+ s1->ext_host_addr.as_u32,
+ ip4_header_t, dst_address);
+ sum1 =
+ ip_csum_update (sum1,
+ vnet_buffer (b1)->ip.
+ reass.l4_dst_port, s1->ext_host_port,
+ ip4_header_t, length);
+ tcp1->dst_port = s1->ext_host_port;
+ ip1->dst_address.as_u32 = s1->ext_host_addr.as_u32;
+ }
+ tcp1->checksum = ip_csum_fold (sum1);
+ mss_clamping (sm, tcp1, &sum1);
+ }
+ tcp_packets++;
+ if (nat44_set_tcp_session_state_i2o (sm, s1, b1, thread_index))
+ goto trace01;
+ }
+ else if (!vnet_buffer (b1)->ip.reass.is_non_first_fragment
+ && udp1->checksum)
+ {
+ new_port1 = udp1->src_port = s1->out2in.port;
+ sum1 = udp1->checksum;
+ sum1 =
+ ip_csum_update (sum1, old_addr1, new_addr1, ip4_header_t,
+ dst_address);
+ sum1 =
+ ip_csum_update (sum1, old_port1, new_port1, ip4_header_t,
+ length);
- sum1 = tcp1->checksum;
- sum1 = ip_csum_update (sum1, old_addr1, new_addr1, ip4_header_t,
- dst_address);
- sum1 = ip_csum_update (sum1, old_port1, new_port1, ip4_header_t,
- length);
if (PREDICT_FALSE (is_twice_nat_session (s1)))
{
sum1 = ip_csum_update (sum1, ip1->dst_address.as_u32,
s1->ext_host_addr.as_u32,
ip4_header_t, dst_address);
- sum1 = ip_csum_update (sum1, tcp1->dst_port,
- s1->ext_host_port, ip4_header_t,
- length);
- tcp1->dst_port = s1->ext_host_port;
+ sum1 =
+ ip_csum_update (sum1,
+ vnet_buffer (b1)->ip.reass.l4_dst_port,
+ s1->ext_host_port, ip4_header_t, length);
+ udp1->dst_port = s1->ext_host_port;
ip1->dst_address.as_u32 = s1->ext_host_addr.as_u32;
}
- tcp1->checksum = ip_csum_fold (sum1);
- mss_clamping (sm, tcp1, &sum1);
- if (nat44_set_tcp_session_state_i2o
- (sm, s1, tcp1, thread_index))
- goto trace01;
+ udp1->checksum = ip_csum_fold (sum1);
+ udp_packets++;
}
else
{
- udp1->src_port = s1->out2in.port;
- udp1->checksum = 0;
- if (PREDICT_FALSE (is_twice_nat_session (s1)))
+ if (!vnet_buffer (b1)->ip.reass.is_non_first_fragment)
{
- udp1->dst_port = s1->ext_host_port;
- ip1->dst_address.as_u32 = s1->ext_host_addr.as_u32;
+ new_port1 = udp1->src_port = s1->out2in.port;
+ if (PREDICT_FALSE (is_twice_nat_session (s1)))
+ {
+ udp1->dst_port = s1->ext_host_port;
+ ip1->dst_address.as_u32 = s1->ext_host_addr.as_u32;
+ }
}
+ udp_packets++;
}
/* Accounting */
nat44_session_update_counters (s1, now,
vlib_buffer_length_in_chain (vm,
- b1));
+ b1),
+ thread_index);
/* Per-user LRU list maintenance */
nat44_session_update_lru (sm, s1, thread_index);
t->session_index = s1 - tsm->sessions;
}
- pkts_processed += next1 != NAT_IN2OUT_ED_NEXT_DROP;
+ pkts_processed += next1 == nat_buffer_opaque (b1)->arc_next;
+
/* verify speculative enqueues, maybe switch current next frame */
vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
n_left_to_next -= 1;
b0 = vlib_get_buffer (vm, bi0);
- next0 = NAT_IN2OUT_ED_NEXT_LOOKUP;
if (is_output_feature)
- iph_offset0 = vnet_buffer (b0)->ip.save_rewrite_length;
+ {
+ // output feature fast path is enabled on the arc
+ // we need new arc_next feature
+ if (PREDICT_TRUE (!is_slow_path))
+ vnet_feature_next (&nat_buffer_opaque (b0)->arc_next, b0);
+
+ iph_offset0 = vnet_buffer (b0)->ip.reass.save_rewrite_length;
+ }
+
+ next0 = nat_buffer_opaque (b0)->arc_next;
ip0 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b0) +
iph_offset0);
icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded,
ICMP4_time_exceeded_ttl_exceeded_in_transit,
0);
- next0 = NAT_IN2OUT_ED_NEXT_ICMP_ERROR;
+ next0 = NAT_NEXT_ICMP_ERROR;
goto trace0;
}
{
s0 = nat44_ed_in2out_unknown_proto (sm, b0, ip0,
rx_fib_index0,
- thread_index, now, vm,
- node);
+ thread_index, now,
+ vm, node);
if (!s0)
- next0 = NAT_IN2OUT_ED_NEXT_DROP;
+ next0 = NAT_NEXT_DROP;
+ other_packets++;
goto trace0;
}
if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP))
{
next0 = icmp_in2out_ed_slow_path
- (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
- next0, now, thread_index, &s0);
+ (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0,
+ node, next0, now, thread_index, &s0);
+ icmp_packets++;
goto trace0;
}
}
{
if (PREDICT_FALSE (proto0 == ~0))
{
- next0 = NAT_IN2OUT_ED_NEXT_SLOW_PATH;
- goto trace0;
- }
-
- if (ip4_is_fragment (ip0))
- {
- next0 = NAT_IN2OUT_ED_NEXT_REASS;
+ next0 = def_slow;
goto trace0;
}
if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP))
{
- next0 = NAT_IN2OUT_ED_NEXT_SLOW_PATH;
+ next0 = def_slow;
goto trace0;
}
}
make_ed_kv (&kv0, &ip0->src_address, &ip0->dst_address,
- ip0->protocol, rx_fib_index0, udp0->src_port,
- udp0->dst_port);
+ ip0->protocol, rx_fib_index0,
+ vnet_buffer (b0)->ip.reass.l4_src_port,
+ vnet_buffer (b0)->ip.reass.l4_dst_port);
if (clib_bihash_search_16_8 (&tsm->in2out_ed, &kv0, &value0))
{
{
if (PREDICT_FALSE
(nat44_ed_not_translate_output_feature
- (sm, ip0, ip0->protocol, udp0->src_port,
- udp0->dst_port, thread_index, sw_if_index0,
+ (sm, ip0, ip0->protocol,
+ vnet_buffer (b0)->ip.reass.l4_src_port,
+ vnet_buffer (b0)->ip.reass.l4_dst_port,
+ thread_index, sw_if_index0,
vnet_buffer (b0)->sw_if_index[VLIB_TX])))
goto trace0;
+
+ /*
+ * Send DHCP packets to the ipv4 stack, or we won't
+ * be able to use dhcp client on the outside interface
+ */
+ if (PREDICT_FALSE
+ ((b0->flags & VNET_BUFFER_F_LOCALLY_ORIGINATED)
+ && proto0 == SNAT_PROTOCOL_UDP
+ && (vnet_buffer (b0)->ip.reass.l4_dst_port ==
+ clib_host_to_net_u16
+ (UDP_DST_PORT_dhcp_to_server))))
+ goto trace0;
}
else
{
if (PREDICT_FALSE (nat44_ed_not_translate (sm, node,
sw_if_index0,
- ip0, proto0,
+ ip0,
+ proto0,
rx_fib_index0,
thread_index)))
goto trace0;
slow_path_ed (sm, b0, rx_fib_index0, &kv0, &s0, node,
next0, thread_index, now);
- if (PREDICT_FALSE (next0 == NAT_IN2OUT_ED_NEXT_DROP))
+ if (PREDICT_FALSE (next0 == NAT_NEXT_DROP))
goto trace0;
if (PREDICT_FALSE (!s0))
}
else
{
- next0 = NAT_IN2OUT_ED_NEXT_SLOW_PATH;
+ next0 = def_slow;
goto trace0;
}
}
dst_address);
ip0->checksum = ip_csum_fold (sum0);
+ old_port0 = vnet_buffer (b0)->ip.reass.l4_src_port;
+
if (PREDICT_TRUE (proto0 == SNAT_PROTOCOL_TCP))
{
- old_port0 = tcp0->src_port;
- new_port0 = tcp0->src_port = s0->out2in.port;
-
- sum0 = tcp0->checksum;
- sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
- dst_address);
- sum0 = ip_csum_update (sum0, old_port0, new_port0, ip4_header_t,
- length);
+ if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
+ {
+ new_port0 = udp0->src_port = s0->out2in.port;
+ sum0 = tcp0->checksum;
+ sum0 =
+ ip_csum_update (sum0, old_addr0, new_addr0,
+ ip4_header_t, dst_address);
+ sum0 =
+ ip_csum_update (sum0, old_port0, new_port0,
+ ip4_header_t, length);
+ if (PREDICT_FALSE (is_twice_nat_session (s0)))
+ {
+ sum0 =
+ ip_csum_update (sum0, ip0->dst_address.as_u32,
+ s0->ext_host_addr.as_u32,
+ ip4_header_t, dst_address);
+ sum0 =
+ ip_csum_update (sum0,
+ vnet_buffer (b0)->ip.
+ reass.l4_dst_port, s0->ext_host_port,
+ ip4_header_t, length);
+ tcp0->dst_port = s0->ext_host_port;
+ ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
+ }
+ mss_clamping (sm, tcp0, &sum0);
+ tcp0->checksum = ip_csum_fold (sum0);
+ }
+ tcp_packets++;
+ if (nat44_set_tcp_session_state_i2o (sm, s0, b0, thread_index))
+ goto trace0;
+ }
+ else if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment
+ && udp0->checksum)
+ {
+ new_port0 = udp0->src_port = s0->out2in.port;
+ sum0 = udp0->checksum;
+ sum0 =
+ ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
+ dst_address);
+ sum0 =
+ ip_csum_update (sum0, old_port0, new_port0, ip4_header_t,
+ length);
if (PREDICT_FALSE (is_twice_nat_session (s0)))
{
sum0 = ip_csum_update (sum0, ip0->dst_address.as_u32,
s0->ext_host_addr.as_u32,
ip4_header_t, dst_address);
- sum0 = ip_csum_update (sum0, tcp0->dst_port,
- s0->ext_host_port, ip4_header_t,
- length);
- tcp0->dst_port = s0->ext_host_port;
+ sum0 =
+ ip_csum_update (sum0,
+ vnet_buffer (b0)->ip.reass.l4_dst_port,
+ s0->ext_host_port, ip4_header_t, length);
+ udp0->dst_port = s0->ext_host_port;
ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
}
- mss_clamping (sm, tcp0, &sum0);
- tcp0->checksum = ip_csum_fold (sum0);
- if (nat44_set_tcp_session_state_i2o
- (sm, s0, tcp0, thread_index))
- goto trace0;
+ udp0->checksum = ip_csum_fold (sum0);
+ udp_packets++;
}
else
{
- udp0->src_port = s0->out2in.port;
- udp0->checksum = 0;
- if (PREDICT_FALSE (is_twice_nat_session (s0)))
+ if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
{
- udp0->dst_port = s0->ext_host_port;
- ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
+ new_port0 = udp0->src_port = s0->out2in.port;
+ if (PREDICT_FALSE (is_twice_nat_session (s0)))
+ {
+ udp0->dst_port = s0->ext_host_port;
+ ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
+ }
+ udp_packets++;
}
}
/* Accounting */
nat44_session_update_counters (s0, now,
- vlib_buffer_length_in_chain (vm,
- b0));
+ vlib_buffer_length_in_chain
+ (vm, b0), thread_index);
/* Per-user LRU list maintenance */
nat44_session_update_lru (sm, s0, thread_index);
t->session_index = s0 - tsm->sessions;
}
- pkts_processed += next0 != NAT_IN2OUT_ED_NEXT_DROP;
+ pkts_processed += next0 == nat_buffer_opaque (b0)->arc_next;
/* verify speculative enqueue, maybe switch current next frame */
vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
vlib_node_increment_counter (vm, stats_node_index,
NAT_IN2OUT_ED_ERROR_IN2OUT_PACKETS,
pkts_processed);
+ vlib_node_increment_counter (vm, stats_node_index,
+ NAT_IN2OUT_ED_ERROR_TCP_PACKETS, tcp_packets);
+ vlib_node_increment_counter (vm, stats_node_index,
+ NAT_IN2OUT_ED_ERROR_UDP_PACKETS, udp_packets);
+ vlib_node_increment_counter (vm, stats_node_index,
+ NAT_IN2OUT_ED_ERROR_ICMP_PACKETS,
+ icmp_packets);
+ vlib_node_increment_counter (vm, stats_node_index,
+ NAT_IN2OUT_ED_ERROR_OTHER_PACKETS,
+ other_packets);
return frame->n_vectors;
}
-static uword
-nat44_ed_in2out_fast_path_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+VLIB_NODE_FN (nat44_ed_in2out_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
{
return nat44_ed_in2out_node_fn_inline (vm, node, frame, 0, 0);
}
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (nat44_ed_in2out_node) = {
- .function = nat44_ed_in2out_fast_path_fn,
.name = "nat44-ed-in2out",
.vector_size = sizeof (u32),
+ .sibling_of = "nat-default",
.format_trace = format_nat_in2out_ed_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
.n_errors = ARRAY_LEN (nat_in2out_ed_error_strings),
.error_strings = nat_in2out_ed_error_strings,
.runtime_data_bytes = sizeof (snat_runtime_t),
- .n_next_nodes = NAT_IN2OUT_ED_N_NEXT,
- .next_nodes = {
- [NAT_IN2OUT_ED_NEXT_DROP] = "error-drop",
- [NAT_IN2OUT_ED_NEXT_LOOKUP] = "ip4-lookup",
- [NAT_IN2OUT_ED_NEXT_SLOW_PATH] = "nat44-ed-in2out-slowpath",
- [NAT_IN2OUT_ED_NEXT_ICMP_ERROR] = "ip4-icmp-error",
- [NAT_IN2OUT_ED_NEXT_REASS] = "nat44-ed-in2out-reass",
- },
};
/* *INDENT-ON* */
-VLIB_NODE_FUNCTION_MULTIARCH (nat44_ed_in2out_node,
- nat44_ed_in2out_fast_path_fn);
-
-static uword
-nat44_ed_in2out_output_fast_path_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+VLIB_NODE_FN (nat44_ed_in2out_output_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
{
return nat44_ed_in2out_node_fn_inline (vm, node, frame, 0, 1);
}
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (nat44_ed_in2out_output_node) = {
- .function = nat44_ed_in2out_output_fast_path_fn,
.name = "nat44-ed-in2out-output",
.vector_size = sizeof (u32),
+ .sibling_of = "nat-default",
.format_trace = format_nat_in2out_ed_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
.n_errors = ARRAY_LEN (nat_in2out_ed_error_strings),
.error_strings = nat_in2out_ed_error_strings,
.runtime_data_bytes = sizeof (snat_runtime_t),
- .n_next_nodes = NAT_IN2OUT_ED_N_NEXT,
- .next_nodes = {
- [NAT_IN2OUT_ED_NEXT_DROP] = "error-drop",
- [NAT_IN2OUT_ED_NEXT_LOOKUP] = "interface-output",
- [NAT_IN2OUT_ED_NEXT_SLOW_PATH] = "nat44-ed-in2out-output-slowpath",
- [NAT_IN2OUT_ED_NEXT_ICMP_ERROR] = "ip4-icmp-error",
- [NAT_IN2OUT_ED_NEXT_REASS] = "nat44-ed-in2out-reass-output",
- },
};
/* *INDENT-ON* */
-VLIB_NODE_FUNCTION_MULTIARCH (nat44_ed_in2out_output_node,
- nat44_ed_in2out_output_fast_path_fn);
-
-static uword
-nat44_ed_in2out_slow_path_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+VLIB_NODE_FN (nat44_ed_in2out_slowpath_node) (vlib_main_t * vm,
+ vlib_node_runtime_t *
+ node, vlib_frame_t * frame)
{
return nat44_ed_in2out_node_fn_inline (vm, node, frame, 1, 0);
}
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (nat44_ed_in2out_slowpath_node) = {
- .function = nat44_ed_in2out_slow_path_fn,
.name = "nat44-ed-in2out-slowpath",
.vector_size = sizeof (u32),
+ .sibling_of = "nat-default",
.format_trace = format_nat_in2out_ed_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
.n_errors = ARRAY_LEN (nat_in2out_ed_error_strings),
.error_strings = nat_in2out_ed_error_strings,
.runtime_data_bytes = sizeof (snat_runtime_t),
- .n_next_nodes = NAT_IN2OUT_ED_N_NEXT,
- .next_nodes = {
- [NAT_IN2OUT_ED_NEXT_DROP] = "error-drop",
- [NAT_IN2OUT_ED_NEXT_LOOKUP] = "ip4-lookup",
- [NAT_IN2OUT_ED_NEXT_SLOW_PATH] = "nat44-ed-in2out-slowpath",
- [NAT_IN2OUT_ED_NEXT_ICMP_ERROR] = "ip4-icmp-error",
- [NAT_IN2OUT_ED_NEXT_REASS] = "nat44-ed-in2out-reass",
- },
};
/* *INDENT-ON* */
-VLIB_NODE_FUNCTION_MULTIARCH (nat44_ed_in2out_slowpath_node,
- nat44_ed_in2out_slow_path_fn);
-
-static uword
-nat44_ed_in2out_output_slow_path_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+VLIB_NODE_FN (nat44_ed_in2out_output_slowpath_node) (vlib_main_t * vm,
+ vlib_node_runtime_t
+ * node,
+ vlib_frame_t * frame)
{
return nat44_ed_in2out_node_fn_inline (vm, node, frame, 1, 1);
}
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (nat44_ed_in2out_output_slowpath_node) = {
- .function = nat44_ed_in2out_output_slow_path_fn,
.name = "nat44-ed-in2out-output-slowpath",
.vector_size = sizeof (u32),
+ .sibling_of = "nat-default",
.format_trace = format_nat_in2out_ed_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
.n_errors = ARRAY_LEN (nat_in2out_ed_error_strings),
.error_strings = nat_in2out_ed_error_strings,
.runtime_data_bytes = sizeof (snat_runtime_t),
- .n_next_nodes = NAT_IN2OUT_ED_N_NEXT,
- .next_nodes = {
- [NAT_IN2OUT_ED_NEXT_DROP] = "error-drop",
- [NAT_IN2OUT_ED_NEXT_LOOKUP] = "interface-output",
- [NAT_IN2OUT_ED_NEXT_SLOW_PATH] = "nat44-ed-in2out-output-slowpath",
- [NAT_IN2OUT_ED_NEXT_ICMP_ERROR] = "ip4-icmp-error",
- [NAT_IN2OUT_ED_NEXT_REASS] = "nat44-ed-in2out-reass",
- },
};
/* *INDENT-ON* */
-VLIB_NODE_FUNCTION_MULTIARCH (nat44_ed_in2out_output_slowpath_node,
- nat44_ed_in2out_output_slow_path_fn);
-
-static inline uword
-nat44_ed_in2out_reass_node_fn_inline (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame,
- int is_output_feature)
-{
- u32 n_left_from, *from, *to_next;
- nat_in2out_ed_next_t next_index;
- u32 pkts_processed = 0;
- snat_main_t *sm = &snat_main;
- f64 now = vlib_time_now (vm);
- u32 thread_index = vm->thread_index;
- snat_main_per_thread_data_t *per_thread_data =
- &sm->per_thread_data[thread_index];
- u32 *fragments_to_drop = 0;
- u32 *fragments_to_loopback = 0;
-
- from = vlib_frame_vector_args (frame);
- n_left_from = frame->n_vectors;
- next_index = node->cached_next_index;
-
- while (n_left_from > 0)
- {
- u32 n_left_to_next;
-
- vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
-
- while (n_left_from > 0 && n_left_to_next > 0)
- {
- u32 bi0, sw_if_index0, proto0, rx_fib_index0, new_addr0, old_addr0;
- u32 iph_offset0 = 0;
- vlib_buffer_t *b0;
- u32 next0;
- u8 cached0 = 0;
- ip4_header_t *ip0 = 0;
- nat_reass_ip4_t *reass0;
- udp_header_t *udp0;
- tcp_header_t *tcp0;
- icmp46_header_t *icmp0;
- clib_bihash_kv_16_8_t kv0, value0;
- snat_session_t *s0 = 0;
- u16 old_port0, new_port0;
- ip_csum_t sum0;
-
- /* 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 = NAT_IN2OUT_ED_NEXT_LOOKUP;
-
- sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
- rx_fib_index0 =
- fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4,
- sw_if_index0);
-
- if (PREDICT_FALSE (nat_reass_is_drop_frag (0)))
- {
- next0 = NAT_IN2OUT_ED_NEXT_DROP;
- b0->error = node->errors[NAT_IN2OUT_ED_ERROR_DROP_FRAGMENT];
- goto trace0;
- }
-
- if (is_output_feature)
- iph_offset0 = vnet_buffer (b0)->ip.save_rewrite_length;
-
- ip0 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b0) +
- iph_offset0);
-
- udp0 = ip4_next_header (ip0);
- tcp0 = (tcp_header_t *) udp0;
- icmp0 = (icmp46_header_t *) udp0;
- proto0 = ip_proto_to_snat_proto (ip0->protocol);
-
- reass0 = nat_ip4_reass_find_or_create (ip0->src_address,
- ip0->dst_address,
- ip0->fragment_id,
- ip0->protocol,
- 1, &fragments_to_drop);
-
- if (PREDICT_FALSE (!reass0))
- {
- next0 = NAT_IN2OUT_ED_NEXT_DROP;
- b0->error = node->errors[NAT_IN2OUT_ED_ERROR_MAX_REASS];
- nat_log_notice ("maximum reassemblies exceeded");
- goto trace0;
- }
-
- if (PREDICT_FALSE (ip4_is_first_fragment (ip0)))
- {
- if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP))
- {
- if (is_output_feature)
- {
- if (PREDICT_FALSE
- (nat_not_translate_output_feature_fwd
- (sm, ip0, thread_index, now, vm, b0)))
- reass0->flags |= NAT_REASS_FLAG_ED_DONT_TRANSLATE;
- goto trace0;
- }
-
- next0 = icmp_in2out_ed_slow_path
- (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
- next0, now, thread_index, &s0);
-
- if (PREDICT_TRUE (next0 != NAT_IN2OUT_ED_NEXT_DROP))
- {
- if (s0)
- reass0->sess_index = s0 - per_thread_data->sessions;
- else
- reass0->flags |= NAT_REASS_FLAG_ED_DONT_TRANSLATE;
- nat_ip4_reass_get_frags (reass0,
- &fragments_to_loopback);
- }
-
- goto trace0;
- }
-
- make_ed_kv (&kv0, &ip0->src_address, &ip0->dst_address,
- ip0->protocol, rx_fib_index0, udp0->src_port,
- udp0->dst_port);
-
- if (clib_bihash_search_16_8
- (&per_thread_data->in2out_ed, &kv0, &value0))
- {
- if (is_output_feature)
- {
- if (PREDICT_FALSE
- (nat44_ed_not_translate_output_feature
- (sm, ip0, ip0->protocol, udp0->src_port,
- udp0->dst_port, thread_index, sw_if_index0,
- vnet_buffer (b0)->sw_if_index[VLIB_TX])))
- {
- reass0->flags |= NAT_REASS_FLAG_ED_DONT_TRANSLATE;
- nat_ip4_reass_get_frags (reass0,
- &fragments_to_loopback);
- goto trace0;
- }
- }
- else
- {
- if (PREDICT_FALSE (nat44_ed_not_translate (sm, node,
- sw_if_index0,
- ip0, proto0,
- rx_fib_index0,
- thread_index)))
- {
- reass0->flags |= NAT_REASS_FLAG_ED_DONT_TRANSLATE;
- nat_ip4_reass_get_frags (reass0,
- &fragments_to_loopback);
- goto trace0;
- }
- }
-
- next0 = slow_path_ed (sm, b0, rx_fib_index0, &kv0,
- &s0, node, next0, thread_index, now);
-
- if (PREDICT_FALSE (next0 == NAT_IN2OUT_ED_NEXT_DROP))
- goto trace0;
-
- if (PREDICT_FALSE (!s0))
- {
- reass0->flags |= NAT_REASS_FLAG_ED_DONT_TRANSLATE;
- goto trace0;
- }
-
- reass0->sess_index = s0 - per_thread_data->sessions;
- }
- else
- {
- s0 = pool_elt_at_index (per_thread_data->sessions,
- value0.value);
- reass0->sess_index = value0.value;
- }
- nat_ip4_reass_get_frags (reass0, &fragments_to_loopback);
- }
- else
- {
- if (reass0->flags & NAT_REASS_FLAG_ED_DONT_TRANSLATE)
- goto trace0;
- if (PREDICT_FALSE (reass0->sess_index == (u32) ~ 0))
- {
- if (nat_ip4_reass_add_fragment
- (reass0, bi0, &fragments_to_drop))
- {
- b0->error = node->errors[NAT_IN2OUT_ED_ERROR_MAX_FRAG];
- nat_log_notice
- ("maximum fragments per reassembly exceeded");
- next0 = NAT_IN2OUT_ED_NEXT_DROP;
- goto trace0;
- }
- cached0 = 1;
- goto trace0;
- }
- s0 = pool_elt_at_index (per_thread_data->sessions,
- reass0->sess_index);
- }
-
- old_addr0 = ip0->src_address.as_u32;
- ip0->src_address = s0->out2in.addr;
- new_addr0 = ip0->src_address.as_u32;
- if (!is_output_feature)
- vnet_buffer (b0)->sw_if_index[VLIB_TX] = s0->out2in.fib_index;
-
- sum0 = ip0->checksum;
- sum0 = ip_csum_update (sum0, old_addr0, new_addr0,
- ip4_header_t,
- src_address /* changed member */ );
- if (PREDICT_FALSE (is_twice_nat_session (s0)))
- sum0 = ip_csum_update (sum0, ip0->dst_address.as_u32,
- s0->ext_host_addr.as_u32, ip4_header_t,
- dst_address);
- ip0->checksum = ip_csum_fold (sum0);
-
- if (PREDICT_FALSE (ip4_is_first_fragment (ip0)))
- {
- if (PREDICT_TRUE (proto0 == SNAT_PROTOCOL_TCP))
- {
- old_port0 = tcp0->src_port;
- tcp0->src_port = s0->out2in.port;
- new_port0 = tcp0->src_port;
-
- sum0 = tcp0->checksum;
- sum0 = ip_csum_update (sum0, old_addr0, new_addr0,
- ip4_header_t,
- dst_address /* changed member */ );
- sum0 = ip_csum_update (sum0, old_port0, new_port0,
- ip4_header_t /* cheat */ ,
- length /* changed member */ );
- if (PREDICT_FALSE (is_twice_nat_session (s0)))
- {
- sum0 = ip_csum_update (sum0, ip0->dst_address.as_u32,
- s0->ext_host_addr.as_u32,
- ip4_header_t, dst_address);
- sum0 = ip_csum_update (sum0, tcp0->dst_port,
- s0->ext_host_port, ip4_header_t,
- length);
- tcp0->dst_port = s0->ext_host_port;
- ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
- }
- tcp0->checksum = ip_csum_fold (sum0);
- }
- else
- {
- old_port0 = udp0->src_port;
- udp0->src_port = s0->out2in.port;
- udp0->checksum = 0;
- if (PREDICT_FALSE (is_twice_nat_session (s0)))
- {
- udp0->dst_port = s0->ext_host_port;
- ip0->dst_address.as_u32 = s0->ext_host_addr.as_u32;
- }
- }
- }
-
- /* Hairpinning */
- nat44_reass_hairpinning (sm, b0, ip0, s0->out2in.port,
- s0->ext_host_port, proto0, 1);
-
- /* Accounting */
- nat44_session_update_counters (s0, now,
- vlib_buffer_length_in_chain (vm,
- b0));
- /* Per-user LRU list maintenance */
- nat44_session_update_lru (sm, s0, thread_index);
-
- trace0:
- if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
- && (b0->flags & VLIB_BUFFER_IS_TRACED)))
- {
- nat44_reass_trace_t *t =
- vlib_add_trace (vm, node, b0, sizeof (*t));
- t->cached = cached0;
- t->sw_if_index = sw_if_index0;
- t->next_index = next0;
- }
-
- if (cached0)
- {
- n_left_to_next++;
- to_next--;
- }
- else
- {
- pkts_processed += next0 != NAT_IN2OUT_ED_NEXT_DROP;
-
- /* 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);
- }
-
- if (n_left_from == 0 && vec_len (fragments_to_loopback))
- {
- from = vlib_frame_vector_args (frame);
- u32 len = vec_len (fragments_to_loopback);
- if (len <= VLIB_FRAME_SIZE)
- {
- clib_memcpy_fast (from, fragments_to_loopback,
- sizeof (u32) * len);
- n_left_from = len;
- vec_reset_length (fragments_to_loopback);
- }
- else
- {
- clib_memcpy_fast (from, fragments_to_loopback +
- (len - VLIB_FRAME_SIZE),
- sizeof (u32) * VLIB_FRAME_SIZE);
- n_left_from = VLIB_FRAME_SIZE;
- _vec_len (fragments_to_loopback) = len - VLIB_FRAME_SIZE;
- }
- }
- }
-
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
- }
-
- vlib_node_increment_counter (vm, nat44_ed_in2out_reass_node.index,
- NAT_IN2OUT_ED_ERROR_IN2OUT_PACKETS,
- pkts_processed);
-
- nat_send_all_to_node (vm, fragments_to_drop, node,
- &node->errors[NAT_IN2OUT_ED_ERROR_DROP_FRAGMENT],
- NAT_IN2OUT_ED_NEXT_DROP);
-
- vec_free (fragments_to_drop);
- vec_free (fragments_to_loopback);
- return frame->n_vectors;
-}
-
-static uword
-nat44_ed_in2out_reass_node_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+static u8 *
+format_nat_pre_trace (u8 * s, va_list * args)
{
- return nat44_ed_in2out_reass_node_fn_inline (vm, node, frame, 0);
+ CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
+ CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
+ nat_pre_trace_t *t = va_arg (*args, nat_pre_trace_t *);
+ return format (s, "in2out next_index %d", t->next_index);
}
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (nat44_ed_in2out_reass_node) = {
- .function = nat44_ed_in2out_reass_node_fn,
- .name = "nat44-ed-in2out-reass",
- .vector_size = sizeof (u32),
- .format_trace = format_nat44_reass_trace,
- .type = VLIB_NODE_TYPE_INTERNAL,
- .n_errors = ARRAY_LEN (nat_in2out_ed_error_strings),
- .error_strings = nat_in2out_ed_error_strings,
- .n_next_nodes = NAT_IN2OUT_ED_N_NEXT,
- .next_nodes = {
- [NAT_IN2OUT_ED_NEXT_DROP] = "error-drop",
- [NAT_IN2OUT_ED_NEXT_LOOKUP] = "ip4-lookup",
- [NAT_IN2OUT_ED_NEXT_SLOW_PATH] = "nat44-in2out-slowpath",
- [NAT_IN2OUT_ED_NEXT_ICMP_ERROR] = "ip4-icmp-error",
- [NAT_IN2OUT_ED_NEXT_REASS] = "nat44-ed-in2out-reass",
- },
-};
-/* *INDENT-ON* */
-
-VLIB_NODE_FUNCTION_MULTIARCH (nat44_ed_in2out_reass_node,
- nat44_ed_in2out_reass_node_fn);
-
-static uword
-nat44_ed_in2out_reass_output_node_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+VLIB_NODE_FN (nat_pre_in2out_node)
+ (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
{
- return nat44_ed_in2out_reass_node_fn_inline (vm, node, frame, 1);
+ return nat_pre_node_fn_inline (vm, node, frame,
+ NAT_NEXT_IN2OUT_ED_FAST_PATH);
}
/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (nat44_ed_in2out_reass_output_node) = {
- .function = nat44_ed_in2out_reass_output_node_fn,
- .name = "nat44-ed-in2out-reass-output",
+VLIB_REGISTER_NODE (nat_pre_in2out_node) = {
+ .name = "nat-pre-in2out",
.vector_size = sizeof (u32),
- .format_trace = format_nat44_reass_trace,
+ .sibling_of = "nat-default",
+ .format_trace = format_nat_pre_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
- .n_errors = ARRAY_LEN (nat_in2out_ed_error_strings),
- .error_strings = nat_in2out_ed_error_strings,
- .n_next_nodes = NAT_IN2OUT_ED_N_NEXT,
- .next_nodes = {
- [NAT_IN2OUT_ED_NEXT_DROP] = "error-drop",
- [NAT_IN2OUT_ED_NEXT_LOOKUP] = "interface-output",
- [NAT_IN2OUT_ED_NEXT_SLOW_PATH] = "nat44-in2out-slowpath",
- [NAT_IN2OUT_ED_NEXT_ICMP_ERROR] = "ip4-icmp-error",
- [NAT_IN2OUT_ED_NEXT_REASS] = "nat44-ed-in2out-reass",
- },
+ .n_errors = 0,
};
/* *INDENT-ON* */
-VLIB_NODE_FUNCTION_MULTIARCH (nat44_ed_in2out_reass_output_node,
- nat44_ed_in2out_reass_output_node_fn);
-
/*
* fd.io coding-style-patch-verification: ON
*
Code Review / vpp.git / blobdiff