/*
- * Copyright (c) 2018 Cisco and/or its affiliates.
+ * Copyright (c) 2020 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
* See the License for the specific language governing permissions and
* limitations under the License.
*/
+
/**
* @file
- * @brief Deterministic/CGN NAT44 inside to outside network translation
+ * @brief Deterministic NAT (CGN) inside to outside translation
*/
#include <vlib/vlib.h>
#include <vnet/fib/ip4_fib.h>
#include <vppinfra/error.h>
#include <vppinfra/elog.h>
-#include <nat/nat.h>
-#include <nat/nat_det.h>
-#include <nat/nat_inlines.h>
+
+#include <nat/det44/det44.h>
+#include <nat/det44/det44_inlines.h>
+
+#include <nat/lib/lib.h>
+#include <nat/lib/inlines.h>
#include <nat/lib/nat_inlines.h>
+typedef enum
+{
+ DET44_IN2OUT_NEXT_LOOKUP,
+ DET44_IN2OUT_NEXT_DROP,
+ DET44_IN2OUT_NEXT_ICMP_ERROR,
+ DET44_IN2OUT_N_NEXT,
+} det44_in2out_next_t;
+
typedef struct
{
u32 sw_if_index;
u32 next_index;
u32 session_index;
-} nat_det_in2out_trace_t;
+} det44_in2out_trace_t;
-typedef enum
-{
- NAT_DET_IN2OUT_NEXT_LOOKUP,
- NAT_DET_IN2OUT_NEXT_DROP,
- NAT_DET_IN2OUT_NEXT_ICMP_ERROR,
- NAT_DET_IN2OUT_N_NEXT,
-} nat_det_in2out_next_t;
-
-#define foreach_nat_det_in2out_error \
-_(UNSUPPORTED_PROTOCOL, "Unsupported protocol") \
-_(NO_TRANSLATION, "No translation") \
-_(BAD_ICMP_TYPE, "unsupported ICMP type") \
-_(OUT_OF_PORTS, "Out of ports") \
+#define foreach_det44_in2out_error \
+_(UNSUPPORTED_PROTOCOL, "Unsupported protocol") \
+_(NO_TRANSLATION, "No translation") \
+_(BAD_ICMP_TYPE, "unsupported ICMP type") \
+_(OUT_OF_PORTS, "Out of ports") \
_(IN2OUT_PACKETS, "Good in2out packets processed")
typedef enum
{
-#define _(sym,str) NAT_DET_IN2OUT_ERROR_##sym,
- foreach_nat_det_in2out_error
+#define _(sym,str) DET44_IN2OUT_ERROR_##sym,
+ foreach_det44_in2out_error
#undef _
- NAT_DET_IN2OUT_N_ERROR,
-} nat_det_in2out_error_t;
+ DET44_IN2OUT_N_ERROR,
+} det44_in2out_error_t;
-static char *nat_det_in2out_error_strings[] = {
+static char *det44_in2out_error_strings[] = {
#define _(sym,string) string,
- foreach_nat_det_in2out_error
+ foreach_det44_in2out_error
#undef _
};
static u8 *
-format_nat_det_in2out_trace (u8 * s, va_list * args)
+format_det44_in2out_trace (u8 * s, va_list * args)
{
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_det_in2out_trace_t *t = va_arg (*args, nat_det_in2out_trace_t *);
+ det44_in2out_trace_t *t = va_arg (*args, det44_in2out_trace_t *);
- s = format (s, "NAT_DET_IN2OUT: sw_if_index %d, next index %d, session %d",
+ s = format (s, "DET44_IN2OUT: sw_if_index %d, next index %d, session %d",
t->sw_if_index, t->next_index, t->session_index);
return s;
* Get address and port values to be used for ICMP packet translation
* and create session if needed
*
- * @param[in,out] sm NAT main
* @param[in,out] node NAT node runtime
* @param[in] thread_index thread index
* @param[in,out] b0 buffer containing packet to be translated
* @param e optional parameter
*/
u32
-icmp_match_in2out_det (snat_main_t * sm, vlib_node_runtime_t * node,
+icmp_match_in2out_det (vlib_node_runtime_t * node,
u32 thread_index, vlib_buffer_t * b0,
ip4_header_t * ip0, ip4_address_t * addr,
u16 * port, u32 * fib_index,
nat_protocol_t * proto, void *d, void *e,
u8 * dont_translate)
{
+ det44_main_t *dm = &det44_main;
vlib_main_t *vm = vlib_get_main ();
icmp46_header_t *icmp0;
u32 sw_if_index0;
ip4_header_t *inner_ip0;
void *l4_header = 0;
icmp46_header_t *inner_icmp0;
- snat_det_map_t *dm0 = 0;
+ snat_det_map_t *mp0 = 0;
ip4_address_t new_addr0;
u16 lo_port0, i0;
snat_det_session_t *ses0 = 0;
in_port = ((tcp_udp_header_t *) l4_header)->dst_port;
break;
default:
- b0->error = node->errors[NAT_DET_IN2OUT_ERROR_UNSUPPORTED_PROTOCOL];
- next0 = NAT_DET_IN2OUT_NEXT_DROP;
+ b0->error = node->errors[DET44_IN2OUT_ERROR_UNSUPPORTED_PROTOCOL];
+ next0 = DET44_IN2OUT_NEXT_DROP;
goto out;
}
}
- dm0 = snat_det_map_by_user (sm, &in_addr);
- if (PREDICT_FALSE (!dm0))
+ mp0 = snat_det_map_by_user (&in_addr);
+ if (PREDICT_FALSE (!mp0))
{
- nat_log_info ("no match for internal host %U",
- format_ip4_address, &in_addr);
- if (PREDICT_FALSE (snat_not_translate_fast (sm, node, sw_if_index0, ip0,
- IP_PROTOCOL_ICMP,
- rx_fib_index0)))
+ if (PREDICT_FALSE (det44_translate (node, sw_if_index0, ip0,
+ IP_PROTOCOL_ICMP, rx_fib_index0)))
{
*dont_translate = 1;
goto out;
}
- next0 = NAT_DET_IN2OUT_NEXT_DROP;
- b0->error = node->errors[NAT_DET_IN2OUT_ERROR_NO_TRANSLATION];
+ next0 = DET44_IN2OUT_NEXT_DROP;
+ b0->error = node->errors[DET44_IN2OUT_ERROR_NO_TRANSLATION];
goto out;
}
- snat_det_forward (dm0, &in_addr, &new_addr0, &lo_port0);
+ snat_det_forward (mp0, &in_addr, &new_addr0, &lo_port0);
key0.ext_host_addr = ip0->dst_address;
key0.ext_host_port = 0;
- ses0 = snat_det_find_ses_by_in (dm0, &in_addr, in_port, key0);
+ ses0 = snat_det_find_ses_by_in (mp0, &in_addr, in_port, key0);
if (PREDICT_FALSE (!ses0))
{
- if (PREDICT_FALSE (snat_not_translate_fast (sm, node, sw_if_index0, ip0,
- IP_PROTOCOL_ICMP,
- rx_fib_index0)))
+ if (PREDICT_FALSE (det44_translate (node, sw_if_index0, ip0,
+ IP_PROTOCOL_ICMP, rx_fib_index0)))
{
*dont_translate = 1;
goto out;
}
if (icmp0->type != ICMP4_echo_request)
{
- b0->error = node->errors[NAT_DET_IN2OUT_ERROR_BAD_ICMP_TYPE];
- next0 = NAT_DET_IN2OUT_NEXT_DROP;
+ b0->error = node->errors[DET44_IN2OUT_ERROR_BAD_ICMP_TYPE];
+ next0 = DET44_IN2OUT_NEXT_DROP;
goto out;
}
- for (i0 = 0; i0 < dm0->ports_per_host; i0++)
+ for (i0 = 0; i0 < mp0->ports_per_host; i0++)
{
key0.out_port = clib_host_to_net_u16 (lo_port0 +
((i0 +
clib_net_to_host_u16
(echo0->identifier)) %
- dm0->ports_per_host));
+ mp0->ports_per_host));
- if (snat_det_get_ses_by_out (dm0, &in_addr, key0.as_u64))
+ if (snat_det_get_ses_by_out (mp0, &in_addr, key0.as_u64))
continue;
ses0 =
- snat_det_ses_create (thread_index, dm0,
+ snat_det_ses_create (thread_index, mp0,
&in_addr, echo0->identifier, &key0);
break;
}
if (PREDICT_FALSE (!ses0))
{
- next0 = NAT_DET_IN2OUT_NEXT_DROP;
- b0->error = node->errors[NAT_DET_IN2OUT_ERROR_OUT_OF_PORTS];
+ next0 = DET44_IN2OUT_NEXT_DROP;
+ b0->error = node->errors[DET44_IN2OUT_ERROR_OUT_OF_PORTS];
goto out;
}
}
&& !icmp_type_is_error_message (vnet_buffer (b0)->ip.
reass.icmp_type_or_tcp_flags)))
{
- b0->error = node->errors[NAT_DET_IN2OUT_ERROR_BAD_ICMP_TYPE];
- next0 = NAT_DET_IN2OUT_NEXT_DROP;
+ b0->error = node->errors[DET44_IN2OUT_ERROR_BAD_ICMP_TYPE];
+ next0 = DET44_IN2OUT_NEXT_DROP;
goto out;
}
u32 now = (u32) vlib_time_now (vm);
- ses0->state = SNAT_SESSION_ICMP_ACTIVE;
- ses0->expire = now + sm->icmp_timeout;
+ ses0->state = DET44_SESSION_ICMP_ACTIVE;
+ ses0->expire = now + dm->timeouts.icmp;
out:
*proto = protocol;
if (ses0)
{
*addr = new_addr0;
- *fib_index = sm->outside_fib_index;
+ *fib_index = dm->outside_fib_index;
*port = ses0->out.out_port;
}
if (d)
*(snat_det_session_t **) d = ses0;
if (e)
- *(snat_det_map_t **) e = dm0;
+ *(snat_det_map_t **) e = mp0;
+ return next0;
+}
+#endif
+
+#ifndef CLIB_MARCH_VARIANT
+u32
+det44_icmp_in2out (vlib_buffer_t * b0,
+ ip4_header_t * ip0,
+ icmp46_header_t * icmp0,
+ u32 sw_if_index0,
+ u32 rx_fib_index0,
+ vlib_node_runtime_t * node,
+ u32 next0, u32 thread_index, void *d, void *e)
+{
+ vlib_main_t *vm = vlib_get_main ();
+ u16 old_id0, new_id0, port, checksum0, old_checksum0, new_checksum0;
+ u32 new_addr0, old_addr0, next0_tmp, fib_index;
+ icmp_echo_header_t *echo0, *inner_echo0;
+ icmp46_header_t *inner_icmp0;
+ ip4_header_t *inner_ip0;
+ ip4_address_t addr;
+ void *l4_header;
+ u8 dont_translate;
+ ip_csum_t sum0;
+ nat_protocol_t protocol;
+
+ echo0 = (icmp_echo_header_t *) (icmp0 + 1);
+ next0_tmp = icmp_match_in2out_det (node, thread_index, b0, ip0,
+ &addr, &port, &fib_index, &protocol,
+ d, e, &dont_translate);
+ if (next0_tmp != ~0)
+ next0 = next0_tmp;
+ if (next0 == DET44_IN2OUT_NEXT_DROP || dont_translate)
+ goto out;
+
+ if (PREDICT_TRUE (!ip4_is_fragment (ip0)))
+ {
+ sum0 =
+ ip_incremental_checksum_buffer (vm, b0,
+ (u8 *) icmp0 -
+ (u8 *) vlib_buffer_get_current (b0),
+ ntohs (ip0->length) -
+ ip4_header_bytes (ip0), 0);
+ checksum0 = ~ip_csum_fold (sum0);
+ if (PREDICT_FALSE (checksum0 != 0 && checksum0 != 0xffff))
+ {
+ next0 = DET44_IN2OUT_NEXT_DROP;
+ goto out;
+ }
+ }
+
+ old_addr0 = ip0->src_address.as_u32;
+ new_addr0 = ip0->src_address.as_u32 = addr.as_u32;
+
+ sum0 = ip0->checksum;
+ sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
+ src_address /* changed member */ );
+ ip0->checksum = ip_csum_fold (sum0);
+
+ if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
+ {
+ if (icmp0->checksum == 0)
+ icmp0->checksum = 0xffff;
+
+ if (!icmp_type_is_error_message (icmp0->type))
+ {
+ new_id0 = port;
+ if (PREDICT_FALSE (new_id0 != echo0->identifier))
+ {
+ old_id0 = echo0->identifier;
+ new_id0 = port;
+ echo0->identifier = new_id0;
+
+ sum0 = icmp0->checksum;
+ sum0 =
+ ip_csum_update (sum0, old_id0, new_id0, icmp_echo_header_t,
+ identifier);
+ icmp0->checksum = ip_csum_fold (sum0);
+ }
+ }
+ else
+ {
+ inner_ip0 = (ip4_header_t *) (echo0 + 1);
+ l4_header = ip4_next_header (inner_ip0);
+
+ if (!ip4_header_checksum_is_valid (inner_ip0))
+ {
+ next0 = DET44_IN2OUT_NEXT_DROP;
+ goto out;
+ }
+
+ /* update inner destination IP address */
+ old_addr0 = inner_ip0->dst_address.as_u32;
+ inner_ip0->dst_address = addr;
+ new_addr0 = inner_ip0->dst_address.as_u32;
+ sum0 = icmp0->checksum;
+ sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
+ dst_address /* changed member */ );
+ icmp0->checksum = ip_csum_fold (sum0);
+
+ /* update inner IP header checksum */
+ old_checksum0 = inner_ip0->checksum;
+ sum0 = inner_ip0->checksum;
+ sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
+ dst_address /* changed member */ );
+ inner_ip0->checksum = ip_csum_fold (sum0);
+ new_checksum0 = inner_ip0->checksum;
+ sum0 = icmp0->checksum;
+ sum0 =
+ ip_csum_update (sum0, old_checksum0, new_checksum0, ip4_header_t,
+ checksum);
+ icmp0->checksum = ip_csum_fold (sum0);
+
+ switch (protocol)
+ {
+ case NAT_PROTOCOL_ICMP:
+ inner_icmp0 = (icmp46_header_t *) l4_header;
+ inner_echo0 = (icmp_echo_header_t *) (inner_icmp0 + 1);
+
+ old_id0 = inner_echo0->identifier;
+ new_id0 = port;
+ inner_echo0->identifier = new_id0;
+
+ sum0 = icmp0->checksum;
+ sum0 =
+ ip_csum_update (sum0, old_id0, new_id0, icmp_echo_header_t,
+ identifier);
+ icmp0->checksum = ip_csum_fold (sum0);
+ break;
+ case NAT_PROTOCOL_UDP:
+ case NAT_PROTOCOL_TCP:
+ old_id0 = ((tcp_udp_header_t *) l4_header)->dst_port;
+ new_id0 = port;
+ ((tcp_udp_header_t *) l4_header)->dst_port = new_id0;
+
+ sum0 = icmp0->checksum;
+ sum0 = ip_csum_update (sum0, old_id0, new_id0, tcp_udp_header_t,
+ dst_port);
+ icmp0->checksum = ip_csum_fold (sum0);
+ break;
+ default:
+ ASSERT (0);
+ }
+ }
+ }
+
+ if (vnet_buffer (b0)->sw_if_index[VLIB_TX] == ~0)
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = fib_index;
+out:
return next0;
}
#endif
-VLIB_NODE_FN (snat_det_in2out_node) (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+VLIB_NODE_FN (det44_in2out_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
{
u32 n_left_from, *from, *to_next;
- nat_det_in2out_next_t next_index;
+ det44_in2out_next_t next_index;
u32 pkts_processed = 0;
- snat_main_t *sm = &snat_main;
+ det44_main_t *dm = &det44_main;
u32 now = (u32) vlib_time_now (vm);
u32 thread_index = vm->thread_index;
tcp_header_t *tcp0, *tcp1;
u32 proto0, proto1;
snat_det_out_key_t key0, key1;
- snat_det_map_t *dm0, *dm1;
+ snat_det_map_t *mp0, *mp1;
snat_det_session_t *ses0 = 0, *ses1 = 0;
u32 rx_fib_index0, rx_fib_index1;
icmp46_header_t *icmp0, *icmp1;
b0 = vlib_get_buffer (vm, bi0);
b1 = vlib_get_buffer (vm, bi1);
- next0 = NAT_DET_IN2OUT_NEXT_LOOKUP;
- next1 = NAT_DET_IN2OUT_NEXT_LOOKUP;
+ next0 = DET44_IN2OUT_NEXT_LOOKUP;
+ next1 = DET44_IN2OUT_NEXT_LOOKUP;
ip0 = vlib_buffer_get_current (b0);
udp0 = ip4_next_header (ip0);
icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded,
ICMP4_time_exceeded_ttl_exceeded_in_transit,
0);
- next0 = NAT_DET_IN2OUT_NEXT_ICMP_ERROR;
+ next0 = DET44_IN2OUT_NEXT_ICMP_ERROR;
goto trace0;
}
ip4_fib_table_get_index_for_sw_if_index (sw_if_index0);
icmp0 = (icmp46_header_t *) udp0;
- next0 = icmp_in2out (sm, b0, ip0, icmp0, sw_if_index0,
- rx_fib_index0, node, next0, thread_index,
- &ses0, &dm0);
+ // TODO:
+ next0 = det44_icmp_in2out (b0, ip0, icmp0, sw_if_index0,
+ rx_fib_index0, node, next0,
+ thread_index, &ses0, &mp0);
goto trace0;
}
- dm0 = snat_det_map_by_user (sm, &ip0->src_address);
- if (PREDICT_FALSE (!dm0))
+ mp0 = snat_det_map_by_user (&ip0->src_address);
+ if (PREDICT_FALSE (!mp0))
{
- nat_log_info ("no match for internal host %U",
- format_ip4_address, &ip0->src_address);
- next0 = NAT_DET_IN2OUT_NEXT_DROP;
- b0->error = node->errors[NAT_DET_IN2OUT_ERROR_NO_TRANSLATION];
+ det44_log_info ("no match for internal host %U",
+ format_ip4_address, &ip0->src_address);
+ next0 = DET44_IN2OUT_NEXT_DROP;
+ b0->error = node->errors[DET44_IN2OUT_ERROR_NO_TRANSLATION];
goto trace0;
}
- snat_det_forward (dm0, &ip0->src_address, &new_addr0, &lo_port0);
+ snat_det_forward (mp0, &ip0->src_address, &new_addr0, &lo_port0);
key0.ext_host_addr = ip0->dst_address;
key0.ext_host_port = tcp0->dst;
ses0 =
- snat_det_find_ses_by_in (dm0, &ip0->src_address, tcp0->src, key0);
+ snat_det_find_ses_by_in (mp0, &ip0->src_address, tcp0->src, key0);
if (PREDICT_FALSE (!ses0))
{
- for (i0 = 0; i0 < dm0->ports_per_host; i0++)
+ for (i0 = 0; i0 < mp0->ports_per_host; i0++)
{
key0.out_port = clib_host_to_net_u16 (lo_port0 +
((i0 +
clib_net_to_host_u16
(tcp0->src)) %
- dm0->
+ mp0->
ports_per_host));
if (snat_det_get_ses_by_out
- (dm0, &ip0->src_address, key0.as_u64))
+ (mp0, &ip0->src_address, key0.as_u64))
continue;
ses0 =
- snat_det_ses_create (thread_index, dm0, &ip0->src_address,
+ snat_det_ses_create (thread_index, mp0, &ip0->src_address,
tcp0->src, &key0);
break;
}
ICMP4_destination_unreachable,
ICMP4_destination_unreachable_destination_unreachable_host,
0);
- next0 = NAT_DET_IN2OUT_NEXT_ICMP_ERROR;
+ next0 = DET44_IN2OUT_NEXT_ICMP_ERROR;
goto trace0;
}
}
old_addr0.as_u32 = ip0->src_address.as_u32;
ip0->src_address.as_u32 = new_addr0.as_u32;
- vnet_buffer (b0)->sw_if_index[VLIB_TX] = sm->outside_fib_index;
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = dm->outside_fib_index;
sum0 = ip0->checksum;
sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32,
if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP))
{
if (tcp0->flags & TCP_FLAG_SYN)
- ses0->state = SNAT_SESSION_TCP_SYN_SENT;
+ ses0->state = DET44_SESSION_TCP_SYN_SENT;
else if (tcp0->flags & TCP_FLAG_ACK
- && ses0->state == SNAT_SESSION_TCP_SYN_SENT)
- ses0->state = SNAT_SESSION_TCP_ESTABLISHED;
+ && ses0->state == DET44_SESSION_TCP_SYN_SENT)
+ ses0->state = DET44_SESSION_TCP_ESTABLISHED;
else if (tcp0->flags & TCP_FLAG_FIN
- && ses0->state == SNAT_SESSION_TCP_ESTABLISHED)
- ses0->state = SNAT_SESSION_TCP_FIN_WAIT;
+ && ses0->state == DET44_SESSION_TCP_ESTABLISHED)
+ ses0->state = DET44_SESSION_TCP_FIN_WAIT;
else if (tcp0->flags & TCP_FLAG_ACK
- && ses0->state == SNAT_SESSION_TCP_FIN_WAIT)
- snat_det_ses_close (dm0, ses0);
+ && ses0->state == DET44_SESSION_TCP_FIN_WAIT)
+ snat_det_ses_close (mp0, ses0);
else if (tcp0->flags & TCP_FLAG_FIN
- && ses0->state == SNAT_SESSION_TCP_CLOSE_WAIT)
- ses0->state = SNAT_SESSION_TCP_LAST_ACK;
+ && ses0->state == DET44_SESSION_TCP_CLOSE_WAIT)
+ ses0->state = DET44_SESSION_TCP_LAST_ACK;
else if (tcp0->flags == 0
- && ses0->state == SNAT_SESSION_UNKNOWN)
- ses0->state = SNAT_SESSION_TCP_ESTABLISHED;
+ && ses0->state == DET44_SESSION_UNKNOWN)
+ ses0->state = DET44_SESSION_TCP_ESTABLISHED;
sum0 = tcp0->checksum;
sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32,
sum0 = ip_csum_update (sum0, old_port0, new_port0,
ip4_header_t /* cheat */ ,
length /* changed member */ );
- mss_clamping (sm->mss_clamping, tcp0, &sum0);
+ mss_clamping (dm->mss_clamping, tcp0, &sum0);
tcp0->checksum = ip_csum_fold (sum0);
}
else
{
- ses0->state = SNAT_SESSION_UDP_ACTIVE;
+ ses0->state = DET44_SESSION_UDP_ACTIVE;
if (PREDICT_FALSE (udp0->checksum))
{
switch (ses0->state)
{
- case SNAT_SESSION_UDP_ACTIVE:
- ses0->expire = now + sm->udp_timeout;
+ case DET44_SESSION_UDP_ACTIVE:
+ ses0->expire = now + dm->timeouts.udp;
break;
- case SNAT_SESSION_TCP_SYN_SENT:
- case SNAT_SESSION_TCP_FIN_WAIT:
- case SNAT_SESSION_TCP_CLOSE_WAIT:
- case SNAT_SESSION_TCP_LAST_ACK:
- ses0->expire = now + sm->tcp_transitory_timeout;
+ case DET44_SESSION_TCP_SYN_SENT:
+ case DET44_SESSION_TCP_FIN_WAIT:
+ case DET44_SESSION_TCP_CLOSE_WAIT:
+ case DET44_SESSION_TCP_LAST_ACK:
+ ses0->expire = now + dm->timeouts.tcp.transitory;
break;
- case SNAT_SESSION_TCP_ESTABLISHED:
- ses0->expire = now + sm->tcp_established_timeout;
+ case DET44_SESSION_TCP_ESTABLISHED:
+ ses0->expire = now + dm->timeouts.tcp.established;
break;
}
if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
&& (b0->flags & VLIB_BUFFER_IS_TRACED)))
{
- nat_det_in2out_trace_t *t =
+ det44_in2out_trace_t *t =
vlib_add_trace (vm, node, b0, sizeof (*t));
t->sw_if_index = sw_if_index0;
t->next_index = next0;
t->session_index = ~0;
if (ses0)
- t->session_index = ses0 - dm0->sessions;
+ t->session_index = ses0 - mp0->sessions;
}
- pkts_processed += next0 != NAT_DET_IN2OUT_NEXT_DROP;
+ pkts_processed += next0 != DET44_IN2OUT_NEXT_DROP;
ip1 = vlib_buffer_get_current (b1);
udp1 = ip4_next_header (ip1);
icmp4_error_set_vnet_buffer (b1, ICMP4_time_exceeded,
ICMP4_time_exceeded_ttl_exceeded_in_transit,
0);
- next1 = NAT_DET_IN2OUT_NEXT_ICMP_ERROR;
+ next1 = DET44_IN2OUT_NEXT_ICMP_ERROR;
goto trace1;
}
ip4_fib_table_get_index_for_sw_if_index (sw_if_index1);
icmp1 = (icmp46_header_t *) udp1;
- next1 = icmp_in2out (sm, b1, ip1, icmp1, sw_if_index1,
- rx_fib_index1, node, next1, thread_index,
- &ses1, &dm1);
+ next1 = det44_icmp_in2out (b1, ip1, icmp1, sw_if_index1,
+ rx_fib_index1, node, next1,
+ thread_index, &ses1, &mp1);
goto trace1;
}
- dm1 = snat_det_map_by_user (sm, &ip1->src_address);
- if (PREDICT_FALSE (!dm1))
+ mp1 = snat_det_map_by_user (&ip1->src_address);
+ if (PREDICT_FALSE (!mp1))
{
- nat_log_info ("no match for internal host %U",
- format_ip4_address, &ip0->src_address);
- next1 = NAT_DET_IN2OUT_NEXT_DROP;
- b1->error = node->errors[NAT_DET_IN2OUT_ERROR_NO_TRANSLATION];
+ det44_log_info ("no match for internal host %U",
+ format_ip4_address, &ip0->src_address);
+ next1 = DET44_IN2OUT_NEXT_DROP;
+ b1->error = node->errors[DET44_IN2OUT_ERROR_NO_TRANSLATION];
goto trace1;
}
- snat_det_forward (dm1, &ip1->src_address, &new_addr1, &lo_port1);
+ snat_det_forward (mp1, &ip1->src_address, &new_addr1, &lo_port1);
key1.ext_host_addr = ip1->dst_address;
key1.ext_host_port = tcp1->dst;
ses1 =
- snat_det_find_ses_by_in (dm1, &ip1->src_address, tcp1->src, key1);
+ snat_det_find_ses_by_in (mp1, &ip1->src_address, tcp1->src, key1);
if (PREDICT_FALSE (!ses1))
{
- for (i1 = 0; i1 < dm1->ports_per_host; i1++)
+ for (i1 = 0; i1 < mp1->ports_per_host; i1++)
{
key1.out_port = clib_host_to_net_u16 (lo_port1 +
((i1 +
clib_net_to_host_u16
(tcp1->src)) %
- dm1->
+ mp1->
ports_per_host));
if (snat_det_get_ses_by_out
- (dm1, &ip1->src_address, key1.as_u64))
+ (mp1, &ip1->src_address, key1.as_u64))
continue;
ses1 =
- snat_det_ses_create (thread_index, dm1, &ip1->src_address,
+ snat_det_ses_create (thread_index, mp1, &ip1->src_address,
tcp1->src, &key1);
break;
}
ICMP4_destination_unreachable,
ICMP4_destination_unreachable_destination_unreachable_host,
0);
- next1 = NAT_DET_IN2OUT_NEXT_ICMP_ERROR;
+ next1 = DET44_IN2OUT_NEXT_ICMP_ERROR;
goto trace1;
}
}
old_addr1.as_u32 = ip1->src_address.as_u32;
ip1->src_address.as_u32 = new_addr1.as_u32;
- vnet_buffer (b1)->sw_if_index[VLIB_TX] = sm->outside_fib_index;
+ vnet_buffer (b1)->sw_if_index[VLIB_TX] = dm->outside_fib_index;
sum1 = ip1->checksum;
sum1 = ip_csum_update (sum1, old_addr1.as_u32, new_addr1.as_u32,
if (PREDICT_TRUE (proto1 == NAT_PROTOCOL_TCP))
{
if (tcp1->flags & TCP_FLAG_SYN)
- ses1->state = SNAT_SESSION_TCP_SYN_SENT;
+ ses1->state = DET44_SESSION_TCP_SYN_SENT;
else if (tcp1->flags & TCP_FLAG_ACK
- && ses1->state == SNAT_SESSION_TCP_SYN_SENT)
- ses1->state = SNAT_SESSION_TCP_ESTABLISHED;
+ && ses1->state == DET44_SESSION_TCP_SYN_SENT)
+ ses1->state = DET44_SESSION_TCP_ESTABLISHED;
else if (tcp1->flags & TCP_FLAG_FIN
- && ses1->state == SNAT_SESSION_TCP_ESTABLISHED)
- ses1->state = SNAT_SESSION_TCP_FIN_WAIT;
+ && ses1->state == DET44_SESSION_TCP_ESTABLISHED)
+ ses1->state = DET44_SESSION_TCP_FIN_WAIT;
else if (tcp1->flags & TCP_FLAG_ACK
- && ses1->state == SNAT_SESSION_TCP_FIN_WAIT)
- snat_det_ses_close (dm1, ses1);
+ && ses1->state == DET44_SESSION_TCP_FIN_WAIT)
+ snat_det_ses_close (mp1, ses1);
else if (tcp1->flags & TCP_FLAG_FIN
- && ses1->state == SNAT_SESSION_TCP_CLOSE_WAIT)
- ses1->state = SNAT_SESSION_TCP_LAST_ACK;
+ && ses1->state == DET44_SESSION_TCP_CLOSE_WAIT)
+ ses1->state = DET44_SESSION_TCP_LAST_ACK;
else if (tcp1->flags == 0
- && ses1->state == SNAT_SESSION_UNKNOWN)
- ses1->state = SNAT_SESSION_TCP_ESTABLISHED;
+ && ses1->state == DET44_SESSION_UNKNOWN)
+ ses1->state = DET44_SESSION_TCP_ESTABLISHED;
sum1 = tcp1->checksum;
sum1 = ip_csum_update (sum1, old_addr1.as_u32, new_addr1.as_u32,
sum1 = ip_csum_update (sum1, old_port1, new_port1,
ip4_header_t /* cheat */ ,
length /* changed member */ );
- mss_clamping (sm->mss_clamping, tcp1, &sum1);
+ mss_clamping (dm->mss_clamping, tcp1, &sum1);
tcp1->checksum = ip_csum_fold (sum1);
}
else
{
- ses1->state = SNAT_SESSION_UDP_ACTIVE;
+ ses1->state = DET44_SESSION_UDP_ACTIVE;
if (PREDICT_FALSE (udp1->checksum))
{
switch (ses1->state)
{
- case SNAT_SESSION_UDP_ACTIVE:
- ses1->expire = now + sm->udp_timeout;
+ case DET44_SESSION_UDP_ACTIVE:
+ ses1->expire = now + dm->timeouts.udp;
break;
- case SNAT_SESSION_TCP_SYN_SENT:
- case SNAT_SESSION_TCP_FIN_WAIT:
- case SNAT_SESSION_TCP_CLOSE_WAIT:
- case SNAT_SESSION_TCP_LAST_ACK:
- ses1->expire = now + sm->tcp_transitory_timeout;
+ case DET44_SESSION_TCP_SYN_SENT:
+ case DET44_SESSION_TCP_FIN_WAIT:
+ case DET44_SESSION_TCP_CLOSE_WAIT:
+ case DET44_SESSION_TCP_LAST_ACK:
+ ses1->expire = now + dm->timeouts.tcp.transitory;
break;
- case SNAT_SESSION_TCP_ESTABLISHED:
- ses1->expire = now + sm->tcp_established_timeout;
+ case DET44_SESSION_TCP_ESTABLISHED:
+ ses1->expire = now + dm->timeouts.tcp.established;
break;
}
if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
&& (b1->flags & VLIB_BUFFER_IS_TRACED)))
{
- nat_det_in2out_trace_t *t =
+ det44_in2out_trace_t *t =
vlib_add_trace (vm, node, b1, sizeof (*t));
t->sw_if_index = sw_if_index1;
t->next_index = next1;
t->session_index = ~0;
if (ses1)
- t->session_index = ses1 - dm1->sessions;
+ t->session_index = ses1 - mp1->sessions;
}
- pkts_processed += next1 != NAT_DET_IN2OUT_NEXT_DROP;
+ pkts_processed += next1 != DET44_IN2OUT_NEXT_DROP;
/* verify speculative enqueues, maybe switch current next frame */
vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
tcp_header_t *tcp0;
u32 proto0;
snat_det_out_key_t key0;
- snat_det_map_t *dm0;
+ snat_det_map_t *mp0;
snat_det_session_t *ses0 = 0;
u32 rx_fib_index0;
icmp46_header_t *icmp0;
n_left_to_next -= 1;
b0 = vlib_get_buffer (vm, bi0);
- next0 = NAT_DET_IN2OUT_NEXT_LOOKUP;
+ next0 = DET44_IN2OUT_NEXT_LOOKUP;
ip0 = vlib_buffer_get_current (b0);
udp0 = ip4_next_header (ip0);
icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded,
ICMP4_time_exceeded_ttl_exceeded_in_transit,
0);
- next0 = NAT_DET_IN2OUT_NEXT_ICMP_ERROR;
+ next0 = DET44_IN2OUT_NEXT_ICMP_ERROR;
goto trace00;
}
ip4_fib_table_get_index_for_sw_if_index (sw_if_index0);
icmp0 = (icmp46_header_t *) udp0;
- next0 = icmp_in2out (sm, b0, ip0, icmp0, sw_if_index0,
- rx_fib_index0, node, next0, thread_index,
- &ses0, &dm0);
+ next0 = det44_icmp_in2out (b0, ip0, icmp0, sw_if_index0,
+ rx_fib_index0, node, next0,
+ thread_index, &ses0, &mp0);
goto trace00;
}
- dm0 = snat_det_map_by_user (sm, &ip0->src_address);
- if (PREDICT_FALSE (!dm0))
+ mp0 = snat_det_map_by_user (&ip0->src_address);
+ if (PREDICT_FALSE (!mp0))
{
- nat_log_info ("no match for internal host %U",
- format_ip4_address, &ip0->src_address);
- next0 = NAT_DET_IN2OUT_NEXT_DROP;
- b0->error = node->errors[NAT_DET_IN2OUT_ERROR_NO_TRANSLATION];
+ det44_log_info ("no match for internal host %U",
+ format_ip4_address, &ip0->src_address);
+ next0 = DET44_IN2OUT_NEXT_DROP;
+ b0->error = node->errors[DET44_IN2OUT_ERROR_NO_TRANSLATION];
goto trace00;
}
- snat_det_forward (dm0, &ip0->src_address, &new_addr0, &lo_port0);
+ snat_det_forward (mp0, &ip0->src_address, &new_addr0, &lo_port0);
key0.ext_host_addr = ip0->dst_address;
key0.ext_host_port = tcp0->dst;
ses0 =
- snat_det_find_ses_by_in (dm0, &ip0->src_address, tcp0->src, key0);
+ snat_det_find_ses_by_in (mp0, &ip0->src_address, tcp0->src, key0);
if (PREDICT_FALSE (!ses0))
{
- for (i0 = 0; i0 < dm0->ports_per_host; i0++)
+ for (i0 = 0; i0 < mp0->ports_per_host; i0++)
{
key0.out_port = clib_host_to_net_u16 (lo_port0 +
((i0 +
clib_net_to_host_u16
(tcp0->src)) %
- dm0->
+ mp0->
ports_per_host));
if (snat_det_get_ses_by_out
- (dm0, &ip0->src_address, key0.as_u64))
+ (mp0, &ip0->src_address, key0.as_u64))
continue;
ses0 =
- snat_det_ses_create (thread_index, dm0, &ip0->src_address,
+ snat_det_ses_create (thread_index, mp0, &ip0->src_address,
tcp0->src, &key0);
break;
}
ICMP4_destination_unreachable,
ICMP4_destination_unreachable_destination_unreachable_host,
0);
- next0 = NAT_DET_IN2OUT_NEXT_ICMP_ERROR;
+ next0 = DET44_IN2OUT_NEXT_ICMP_ERROR;
goto trace00;
}
}
old_addr0.as_u32 = ip0->src_address.as_u32;
ip0->src_address.as_u32 = new_addr0.as_u32;
- vnet_buffer (b0)->sw_if_index[VLIB_TX] = sm->outside_fib_index;
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = dm->outside_fib_index;
sum0 = ip0->checksum;
sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32,
if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP))
{
if (tcp0->flags & TCP_FLAG_SYN)
- ses0->state = SNAT_SESSION_TCP_SYN_SENT;
+ ses0->state = DET44_SESSION_TCP_SYN_SENT;
else if (tcp0->flags & TCP_FLAG_ACK
- && ses0->state == SNAT_SESSION_TCP_SYN_SENT)
- ses0->state = SNAT_SESSION_TCP_ESTABLISHED;
+ && ses0->state == DET44_SESSION_TCP_SYN_SENT)
+ ses0->state = DET44_SESSION_TCP_ESTABLISHED;
else if (tcp0->flags & TCP_FLAG_FIN
- && ses0->state == SNAT_SESSION_TCP_ESTABLISHED)
- ses0->state = SNAT_SESSION_TCP_FIN_WAIT;
+ && ses0->state == DET44_SESSION_TCP_ESTABLISHED)
+ ses0->state = DET44_SESSION_TCP_FIN_WAIT;
else if (tcp0->flags & TCP_FLAG_ACK
- && ses0->state == SNAT_SESSION_TCP_FIN_WAIT)
- snat_det_ses_close (dm0, ses0);
+ && ses0->state == DET44_SESSION_TCP_FIN_WAIT)
+ snat_det_ses_close (mp0, ses0);
else if (tcp0->flags & TCP_FLAG_FIN
- && ses0->state == SNAT_SESSION_TCP_CLOSE_WAIT)
- ses0->state = SNAT_SESSION_TCP_LAST_ACK;
+ && ses0->state == DET44_SESSION_TCP_CLOSE_WAIT)
+ ses0->state = DET44_SESSION_TCP_LAST_ACK;
else if (tcp0->flags == 0
- && ses0->state == SNAT_SESSION_UNKNOWN)
- ses0->state = SNAT_SESSION_TCP_ESTABLISHED;
+ && ses0->state == DET44_SESSION_UNKNOWN)
+ ses0->state = DET44_SESSION_TCP_ESTABLISHED;
sum0 = tcp0->checksum;
sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32,
sum0 = ip_csum_update (sum0, old_port0, new_port0,
ip4_header_t /* cheat */ ,
length /* changed member */ );
- mss_clamping (sm->mss_clamping, tcp0, &sum0);
+ mss_clamping (dm->mss_clamping, tcp0, &sum0);
tcp0->checksum = ip_csum_fold (sum0);
}
else
{
- ses0->state = SNAT_SESSION_UDP_ACTIVE;
+ ses0->state = DET44_SESSION_UDP_ACTIVE;
if (PREDICT_FALSE (udp0->checksum))
{
switch (ses0->state)
{
- case SNAT_SESSION_UDP_ACTIVE:
- ses0->expire = now + sm->udp_timeout;
+ case DET44_SESSION_UDP_ACTIVE:
+ ses0->expire = now + dm->timeouts.udp;
break;
- case SNAT_SESSION_TCP_SYN_SENT:
- case SNAT_SESSION_TCP_FIN_WAIT:
- case SNAT_SESSION_TCP_CLOSE_WAIT:
- case SNAT_SESSION_TCP_LAST_ACK:
- ses0->expire = now + sm->tcp_transitory_timeout;
+ case DET44_SESSION_TCP_SYN_SENT:
+ case DET44_SESSION_TCP_FIN_WAIT:
+ case DET44_SESSION_TCP_CLOSE_WAIT:
+ case DET44_SESSION_TCP_LAST_ACK:
+ ses0->expire = now + dm->timeouts.tcp.transitory;
break;
- case SNAT_SESSION_TCP_ESTABLISHED:
- ses0->expire = now + sm->tcp_established_timeout;
+ case DET44_SESSION_TCP_ESTABLISHED:
+ ses0->expire = now + dm->timeouts.tcp.established;
break;
}
if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
&& (b0->flags & VLIB_BUFFER_IS_TRACED)))
{
- nat_det_in2out_trace_t *t =
+ det44_in2out_trace_t *t =
vlib_add_trace (vm, node, b0, sizeof (*t));
t->sw_if_index = sw_if_index0;
t->next_index = next0;
t->session_index = ~0;
if (ses0)
- t->session_index = ses0 - dm0->sessions;
+ t->session_index = ses0 - mp0->sessions;
}
- pkts_processed += next0 != NAT_DET_IN2OUT_NEXT_DROP;
+ pkts_processed += next0 != DET44_IN2OUT_NEXT_DROP;
/* 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, sm->det_in2out_node_index,
- NAT_DET_IN2OUT_ERROR_IN2OUT_PACKETS,
+ vlib_node_increment_counter (vm, dm->in2out_node_index,
+ DET44_IN2OUT_ERROR_IN2OUT_PACKETS,
pkts_processed);
return frame->n_vectors;
}
/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (snat_det_in2out_node) = {
- .name = "nat44-det-in2out",
+VLIB_REGISTER_NODE (det44_in2out_node) = {
+ .name = "det44-in2out",
.vector_size = sizeof (u32),
- .format_trace = format_nat_det_in2out_trace,
+ .format_trace = format_det44_in2out_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
- .n_errors = ARRAY_LEN(nat_det_in2out_error_strings),
- .error_strings = nat_det_in2out_error_strings,
- .n_next_nodes = NAT_DET_IN2OUT_N_NEXT,
+ .n_errors = ARRAY_LEN(det44_in2out_error_strings),
+ .error_strings = det44_in2out_error_strings,
+ .runtime_data_bytes = sizeof (det44_runtime_t),
+ .n_next_nodes = DET44_IN2OUT_N_NEXT,
/* edit / add dispositions here */
.next_nodes = {
- [NAT_DET_IN2OUT_NEXT_DROP] = "error-drop",
- [NAT_DET_IN2OUT_NEXT_LOOKUP] = "ip4-lookup",
- [NAT_DET_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
+ [DET44_IN2OUT_NEXT_DROP] = "error-drop",
+ [DET44_IN2OUT_NEXT_LOOKUP] = "ip4-lookup",
+ [DET44_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
},
};
/* *INDENT-ON* */
Code Review / vpp.git / blobdiff