#include <nat/nat_ipfix_logging.h>
#include <nat/nat_reass.h>
#include <nat/nat_inlines.h>
+#include <nat/nat_syslog.h>
#include <vppinfra/hash.h>
#include <vppinfra/error.h>
return s;
}
-vlib_node_registration_t snat_out2in_node;
-vlib_node_registration_t snat_out2in_fast_node;
-vlib_node_registration_t nat44_out2in_reass_node;
-
#define foreach_snat_out2in_error \
-_(UNSUPPORTED_PROTOCOL, "Unsupported protocol") \
-_(OUT2IN_PACKETS, "Good out2in packets processed") \
-_(OUT_OF_PORTS, "Out of ports") \
+_(UNSUPPORTED_PROTOCOL, "unsupported protocol") \
+_(OUT2IN_PACKETS, "good out2in packets processed") \
+_(OUT_OF_PORTS, "out of ports") \
_(BAD_ICMP_TYPE, "unsupported ICMP type") \
-_(NO_TRANSLATION, "No translation") \
-_(MAX_SESSIONS_EXCEEDED, "Maximum sessions exceeded") \
-_(DROP_FRAGMENT, "Drop fragment") \
-_(MAX_REASS, "Maximum reassemblies exceeded") \
-_(MAX_FRAG, "Maximum fragments per reassembly exceeded")
+_(NO_TRANSLATION, "no translation") \
+_(MAX_SESSIONS_EXCEEDED, "maximum sessions exceeded") \
+_(DROP_FRAGMENT, "drop fragment") \
+_(MAX_REASS, "maximum reassemblies exceeded") \
+_(MAX_FRAG, "maximum fragments per reassembly exceeded")\
+_(TCP_PACKETS, "TCP packets") \
+_(UDP_PACKETS, "UDP packets") \
+_(ICMP_PACKETS, "ICMP packets") \
+_(OTHER_PACKETS, "other protocol packets") \
+_(FRAGMENTS, "fragments") \
+_(CACHED_FRAGMENTS, "cached fragments") \
+_(PROCESSED_FRAGMENTS, "processed fragments")
typedef enum
{
SNAT_OUT2IN_N_NEXT,
} snat_out2in_next_t;
+#ifndef CLIB_MARCH_VARIANT
int
nat44_o2i_is_idle_session_cb (clib_bihash_kv_8_8_t * kv, void *arg)
{
if (clib_bihash_add_del_8_8 (&tsm->in2out, &s_kv, 0))
nat_log_warn ("out2in key del failed");
- 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_apmdel (s->user_index, s->in2out.fib_index,
+ &s->in2out.addr, s->in2out.port,
+ &s->out2in.addr, s->out2in.port,
+ s->in2out.protocol);
+
if (!snat_is_session_static (s))
snat_free_outside_address_and_port (sm->addresses, ctx->thread_index,
&s->out2in);
return 0;
}
+#endif
/**
* @brief Create session for static mapping.
nat_log_notice ("out2in key add failed");
/* 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_apmadd (s->user_index, s->in2out.fib_index,
+ &s->in2out.addr, s->in2out.port, &s->out2in.addr,
+ s->out2in.port, s->in2out.protocol);
+
return s;
}
return -1; /* success */
}
+#ifndef CLIB_MARCH_VARIANT
/**
* Get address and port values to be used for ICMP packet translation
* and create session if needed
u8 is_addr_only;
u32 next0 = ~0;
int err;
+ u8 identity_nat;
icmp0 = (icmp46_header_t *) ip4_next_header (ip0);
sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
/* Try to match static mapping by external address and port,
destination address and port in packet */
if (snat_static_mapping_match
- (sm, key0, &sm0, 1, &is_addr_only, 0, 0, 0))
+ (sm, key0, &sm0, 1, &is_addr_only, 0, 0, 0, &identity_nat))
{
if (!sm->forwarding_enabled)
{
goto out;
}
+ if (PREDICT_FALSE (identity_nat))
+ {
+ dont_translate = 1;
+ goto out;
+ }
/* Create session initiated by host from external network */
s0 = create_session_for_static_mapping (sm, b0, sm0, key0,
node, thread_index,
*(snat_session_t **) d = s0;
return next0;
}
+#endif
+#ifndef CLIB_MARCH_VARIANT
/**
* Get address and port values to be used for ICMP packet translation
*
}
key0.fib_index = rx_fib_index0;
- if (snat_static_mapping_match (sm, key0, &sm0, 1, &is_addr_only, 0, 0, 0))
+ if (snat_static_mapping_match
+ (sm, key0, &sm0, 1, &is_addr_only, 0, 0, 0, 0))
{
/* Don't NAT packet aimed at the intfc address */
if (is_interface_addr (sm, node, sw_if_index0, ip0->dst_address.as_u32))
*p_dont_translate = dont_translate;
return next0;
}
+#endif
+#ifndef CLIB_MARCH_VARIANT
u32
icmp_out2in (snat_main_t * sm,
vlib_buffer_t * b0,
out:
return next0;
}
-
+#endif
static inline u32
icmp_out2in_slow_path (snat_main_t * sm,
return 0;
}
-static uword
-snat_out2in_node_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * frame)
+VLIB_NODE_FN (snat_out2in_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
{
u32 n_left_from, *from, *to_next;
snat_out2in_next_t next_index;
snat_main_t *sm = &snat_main;
f64 now = vlib_time_now (vm);
u32 thread_index = vm->thread_index;
+ u32 tcp_packets = 0, udp_packets = 0, icmp_packets = 0, other_packets =
+ 0, fragments = 0;
from = vlib_frame_vector_args (frame);
n_left_from = frame->n_vectors;
u32 proto0, proto1;
snat_session_t *s0 = 0, *s1 = 0;
clib_bihash_kv_8_8_t kv0, kv1, value0, value1;
+ u8 identity_nat0, identity_nat1;
/* Prefetch next iteration. */
{
next0 = SNAT_OUT2IN_NEXT_DROP;
}
}
+ other_packets++;
goto trace0;
}
- if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP))
+ if (PREDICT_FALSE (ip4_is_fragment (ip0)))
{
- next0 = icmp_out2in_slow_path
- (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
- next0, now, thread_index, &s0);
+ next0 = SNAT_OUT2IN_NEXT_REASS;
+ fragments++;
goto trace0;
}
- if (PREDICT_FALSE (ip4_is_fragment (ip0)))
+ if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP))
{
- next0 = SNAT_OUT2IN_NEXT_REASS;
+ next0 = icmp_out2in_slow_path
+ (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
+ next0, now, thread_index, &s0);
+ icmp_packets++;
goto trace0;
}
{
/* Try to match static mapping by external address and port,
destination address and port in packet */
- if (snat_static_mapping_match (sm, key0, &sm0, 1, 0, 0, 0, 0))
+ if (snat_static_mapping_match
+ (sm, key0, &sm0, 1, 0, 0, 0, 0, &identity_nat0))
{
/*
* Send DHCP packets to the ipv4 stack, or we won't
goto trace0;
}
+ if (PREDICT_FALSE (identity_nat0))
+ goto trace0;
+
/* Create session initiated by host from external network */
s0 = create_session_for_static_mapping (sm, b0, sm0, key0, node,
thread_index, now);
ip4_header_t /* cheat */ ,
length /* changed member */ );
tcp0->checksum = ip_csum_fold (sum0);
+ tcp_packets++;
}
else
{
old_port0 = udp0->dst_port;
udp0->dst_port = s0->in2out.port;
udp0->checksum = 0;
+ udp_packets++;
}
/* Accounting */
s0 - sm->per_thread_data[thread_index].sessions;
}
- pkts_processed += next0 != SNAT_OUT2IN_NEXT_DROP;
+ pkts_processed += next0 == SNAT_OUT2IN_NEXT_LOOKUP;
ip1 = vlib_buffer_get_current (b1);
next1 = SNAT_OUT2IN_NEXT_DROP;
}
}
+ other_packets++;
goto trace1;
}
- if (PREDICT_FALSE (proto1 == SNAT_PROTOCOL_ICMP))
+ if (PREDICT_FALSE (ip4_is_fragment (ip1)))
{
- next1 = icmp_out2in_slow_path
- (sm, b1, ip1, icmp1, sw_if_index1, rx_fib_index1, node,
- next1, now, thread_index, &s1);
+ next1 = SNAT_OUT2IN_NEXT_REASS;
+ fragments++;
goto trace1;
}
- if (PREDICT_FALSE (ip4_is_fragment (ip1)))
+ if (PREDICT_FALSE (proto1 == SNAT_PROTOCOL_ICMP))
{
- next1 = SNAT_OUT2IN_NEXT_REASS;
+ next1 = icmp_out2in_slow_path
+ (sm, b1, ip1, icmp1, sw_if_index1, rx_fib_index1, node,
+ next1, now, thread_index, &s1);
+ icmp_packets++;
goto trace1;
}
{
/* Try to match static mapping by external address and port,
destination address and port in packet */
- if (snat_static_mapping_match (sm, key1, &sm1, 1, 0, 0, 0, 0))
+ if (snat_static_mapping_match
+ (sm, key1, &sm1, 1, 0, 0, 0, 0, &identity_nat1))
{
/*
* Send DHCP packets to the ipv4 stack, or we won't
goto trace1;
}
+ if (PREDICT_FALSE (identity_nat1))
+ goto trace1;
+
/* Create session initiated by host from external network */
s1 = create_session_for_static_mapping (sm, b1, sm1, key1, node,
thread_index, now);
ip4_header_t /* cheat */ ,
length /* changed member */ );
tcp1->checksum = ip_csum_fold (sum1);
+ tcp_packets++;
}
else
{
old_port1 = udp1->dst_port;
udp1->dst_port = s1->in2out.port;
udp1->checksum = 0;
+ udp_packets++;
}
/* Accounting */
s1 - sm->per_thread_data[thread_index].sessions;
}
- pkts_processed += next1 != SNAT_OUT2IN_NEXT_DROP;
+ pkts_processed += next1 == SNAT_OUT2IN_NEXT_LOOKUP;
/* verify speculative enqueues, maybe switch current next frame */
vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
u32 proto0;
snat_session_t *s0 = 0;
clib_bihash_kv_8_8_t kv0, value0;
+ u8 identity_nat0;
/* speculatively enqueue b0 to the current next frame */
bi0 = from[0];
next0 = SNAT_OUT2IN_NEXT_DROP;
}
}
+ other_packets++;
goto trace00;
}
goto trace00;
}
- if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP))
+ if (PREDICT_FALSE (ip4_is_fragment (ip0)))
{
- next0 = icmp_out2in_slow_path
- (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
- next0, now, thread_index, &s0);
+ next0 = SNAT_OUT2IN_NEXT_REASS;
+ fragments++;
goto trace00;
}
- if (PREDICT_FALSE (ip4_is_fragment (ip0)))
+ if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP))
{
- next0 = SNAT_OUT2IN_NEXT_REASS;
+ next0 = icmp_out2in_slow_path
+ (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
+ next0, now, thread_index, &s0);
+ icmp_packets++;
goto trace00;
}
{
/* Try to match static mapping by external address and port,
destination address and port in packet */
- if (snat_static_mapping_match (sm, key0, &sm0, 1, 0, 0, 0, 0))
+ if (snat_static_mapping_match
+ (sm, key0, &sm0, 1, 0, 0, 0, 0, &identity_nat0))
{
/*
* Send DHCP packets to the ipv4 stack, or we won't
goto trace00;
}
+ if (PREDICT_FALSE (identity_nat0))
+ goto trace00;
+
/* Create session initiated by host from external network */
s0 = create_session_for_static_mapping (sm, b0, sm0, key0, node,
thread_index, now);
ip4_header_t /* cheat */ ,
length /* changed member */ );
tcp0->checksum = ip_csum_fold (sum0);
+ tcp_packets++;
}
else
{
old_port0 = udp0->dst_port;
udp0->dst_port = s0->in2out.port;
udp0->checksum = 0;
+ udp_packets++;
}
/* Accounting */
s0 - sm->per_thread_data[thread_index].sessions;
}
- pkts_processed += next0 != SNAT_OUT2IN_NEXT_DROP;
+ pkts_processed += next0 == SNAT_OUT2IN_NEXT_LOOKUP;
/* verify speculative enqueue, maybe switch current next frame */
vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
- vlib_node_increment_counter (vm, snat_out2in_node.index,
+ vlib_node_increment_counter (vm, sm->out2in_node_index,
SNAT_OUT2IN_ERROR_OUT2IN_PACKETS,
pkts_processed);
+ vlib_node_increment_counter (vm, sm->out2in_node_index,
+ SNAT_OUT2IN_ERROR_TCP_PACKETS, tcp_packets);
+ vlib_node_increment_counter (vm, sm->out2in_node_index,
+ SNAT_OUT2IN_ERROR_UDP_PACKETS, udp_packets);
+ vlib_node_increment_counter (vm, sm->out2in_node_index,
+ SNAT_OUT2IN_ERROR_ICMP_PACKETS, icmp_packets);
+ vlib_node_increment_counter (vm, sm->out2in_node_index,
+ SNAT_OUT2IN_ERROR_OTHER_PACKETS,
+ other_packets);
+ vlib_node_increment_counter (vm, sm->out2in_node_index,
+ SNAT_OUT2IN_ERROR_FRAGMENTS, fragments);
+
return frame->n_vectors;
}
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (snat_out2in_node) = {
- .function = snat_out2in_node_fn,
.name = "nat44-out2in",
.vector_size = sizeof (u32),
.format_trace = format_snat_out2in_trace,
};
/* *INDENT-ON* */
-VLIB_NODE_FUNCTION_MULTIARCH (snat_out2in_node, snat_out2in_node_fn);
-
-static uword
-nat44_out2in_reass_node_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * frame)
+VLIB_NODE_FN (nat44_out2in_reass_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
{
u32 n_left_from, *from, *to_next;
snat_out2in_next_t next_index;
- u32 pkts_processed = 0;
+ u32 pkts_processed = 0, cached_fragments = 0;
snat_main_t *sm = &snat_main;
f64 now = vlib_time_now (vm);
u32 thread_index = vm->thread_index;
nat_reass_ip4_t *reass0;
udp_header_t *udp0;
tcp_header_t *tcp0;
+ icmp46_header_t *icmp0;
snat_session_key_t key0, sm0;
clib_bihash_kv_8_8_t kv0, value0;
snat_session_t *s0 = 0;
u16 old_port0, new_port0;
ip_csum_t sum0;
+ u8 identity_nat0;
/* speculatively enqueue b0 to the current next frame */
bi0 = from[0];
ip0 = (ip4_header_t *) vlib_buffer_get_current (b0);
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,
if (PREDICT_FALSE (ip4_is_first_fragment (ip0)))
{
+ if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP))
+ {
+ next0 = icmp_out2in_slow_path
+ (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
+ next0, now, thread_index, &s0);
+
+ if (PREDICT_TRUE (next0 != SNAT_OUT2IN_NEXT_DROP))
+ {
+ if (s0)
+ reass0->sess_index = s0 - per_thread_data->sessions;
+ else
+ reass0->flags |= NAT_REASS_FLAG_ED_DONT_TRANSLATE;
+ reass0->thread_index = thread_index;
+ nat_ip4_reass_get_frags (reass0,
+ &fragments_to_loopback);
+ }
+
+ goto trace0;
+ }
+
key0.addr = ip0->dst_address;
key0.port = udp0->dst_port;
key0.protocol = proto0;
/* Try to match static mapping by external address and port,
destination address and port in packet */
if (snat_static_mapping_match
- (sm, key0, &sm0, 1, 0, 0, 0, 0))
+ (sm, key0, &sm0, 1, 0, 0, 0, 0, &identity_nat0))
{
/*
* Send DHCP packets to the ipv4 stack, or we won't
node->errors[SNAT_OUT2IN_ERROR_NO_TRANSLATION];
next0 = SNAT_OUT2IN_NEXT_DROP;
}
+ else
+ {
+ reass0->flags |= NAT_REASS_FLAG_ED_DONT_TRANSLATE;
+ nat_ip4_reass_get_frags (reass0,
+ &fragments_to_loopback);
+ }
goto trace0;
}
+ if (PREDICT_FALSE (identity_nat0))
+ goto trace0;
+
/* Create session initiated by host from external network */
s0 =
create_session_for_static_mapping (sm, b0, sm0, key0,
}
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))
+ (thread_index, reass0, bi0, &fragments_to_drop))
{
b0->error = node->errors[SNAT_OUT2IN_ERROR_MAX_FRAG];
nat_log_notice
{
n_left_to_next++;
to_next--;
+ cached_fragments++;
}
else
{
u32 len = vec_len (fragments_to_loopback);
if (len <= VLIB_FRAME_SIZE)
{
- clib_memcpy (from, fragments_to_loopback,
- sizeof (u32) * len);
+ clib_memcpy_fast (from, fragments_to_loopback,
+ sizeof (u32) * len);
n_left_from = len;
vec_reset_length (fragments_to_loopback);
}
else
{
- clib_memcpy (from,
- fragments_to_loopback + (len -
- VLIB_FRAME_SIZE),
- sizeof (u32) * VLIB_FRAME_SIZE);
+ 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_out2in_reass_node.index,
- SNAT_OUT2IN_ERROR_OUT2IN_PACKETS,
+ vlib_node_increment_counter (vm, sm->out2in_reass_node_index,
+ SNAT_OUT2IN_ERROR_PROCESSED_FRAGMENTS,
pkts_processed);
+ vlib_node_increment_counter (vm, sm->out2in_reass_node_index,
+ SNAT_OUT2IN_ERROR_CACHED_FRAGMENTS,
+ cached_fragments);
nat_send_all_to_node (vm, fragments_to_drop, node,
&node->errors[SNAT_OUT2IN_ERROR_DROP_FRAGMENT],
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (nat44_out2in_reass_node) = {
- .function = nat44_out2in_reass_node_fn,
.name = "nat44-out2in-reass",
.vector_size = sizeof (u32),
.format_trace = format_nat44_reass_trace,
};
/* *INDENT-ON* */
-VLIB_NODE_FUNCTION_MULTIARCH (nat44_out2in_reass_node,
- nat44_out2in_reass_node_fn);
-
-static uword
-snat_out2in_fast_node_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * frame)
+VLIB_NODE_FN (snat_out2in_fast_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
{
u32 n_left_from, *from, *to_next;
snat_out2in_next_t next_index;
key0.port = udp0->dst_port;
key0.fib_index = rx_fib_index0;
- if (snat_static_mapping_match (sm, key0, &sm0, 1, 0, 0, 0, 0))
+ if (snat_static_mapping_match (sm, key0, &sm0, 1, 0, 0, 0, 0, 0))
{
b0->error = node->errors[SNAT_OUT2IN_ERROR_NO_TRANSLATION];
goto trace00;
vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
- vlib_node_increment_counter (vm, snat_out2in_fast_node.index,
+ vlib_node_increment_counter (vm, sm->out2in_fast_node_index,
SNAT_OUT2IN_ERROR_OUT2IN_PACKETS,
pkts_processed);
return frame->n_vectors;
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (snat_out2in_fast_node) = {
- .function = snat_out2in_fast_node_fn,
.name = "nat44-out2in-fast",
.vector_size = sizeof (u32),
.format_trace = format_snat_out2in_fast_trace,
};
/* *INDENT-ON* */
-VLIB_NODE_FUNCTION_MULTIARCH (snat_out2in_fast_node,
- snat_out2in_fast_node_fn);
-
/*
* fd.io coding-style-patch-verification: ON
*
Code Review / vpp.git / blobdiff