#include <vlib/vlib.h>
#include <vnet/vnet.h>
-#include <vnet/pg/pg.h>
#include <vnet/ip/ip.h>
#include <vnet/ethernet/ethernet.h>
#include <vnet/fib/ip4_fib.h>
+#include <vnet/udp/udp_local.h>
#include <nat/nat.h>
-#include <nat/nat_ipfix_logging.h>
-#include <nat/nat_reass.h>
+#include <nat/lib/ipfix_logging.h>
#include <nat/nat_inlines.h>
-#include <nat/nat_syslog.h>
+#include <nat/nat44/inlines.h>
+#include <nat/lib/nat_syslog.h>
+#include <nat/nat_ha.h>
#include <vppinfra/hash.h>
#include <vppinfra/error.h>
#include <vppinfra/elog.h>
+#include <nat/lib/nat_inlines.h>
typedef struct
{
u32 next_index;
u32 session_index;
u32 is_slow_path;
+ u32 is_hairpinning;
} snat_in2out_trace_t;
/* packet trace format function */
s = format (s, "%s: sw_if_index %d, next index %d, session %d", tag,
t->sw_if_index, t->next_index, t->session_index);
+ if (t->is_hairpinning)
+ {
+ s = format (s, ", with-hairpinning");
+ }
return s;
}
return s;
}
-vlib_node_registration_t snat_in2out_node;
-vlib_node_registration_t snat_in2out_slowpath_node;
-vlib_node_registration_t snat_in2out_fast_node;
-vlib_node_registration_t snat_in2out_output_node;
-vlib_node_registration_t snat_in2out_output_slowpath_node;
-vlib_node_registration_t nat44_in2out_reass_node;
-
#define foreach_snat_in2out_error \
-_(UNSUPPORTED_PROTOCOL, "Unsupported protocol") \
-_(IN2OUT_PACKETS, "Good in2out packets processed") \
-_(OUT_OF_PORTS, "Out of ports") \
-_(BAD_OUTSIDE_FIB, "Outside VRF ID not found") \
+_(UNSUPPORTED_PROTOCOL, "unsupported protocol") \
+_(OUT_OF_PORTS, "out of ports") \
+_(BAD_OUTSIDE_FIB, "outside VRF ID not found") \
_(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") \
+_(CANNOT_CREATE_USER, "cannot create NAT user")
typedef enum
{
SNAT_IN2OUT_NEXT_DROP,
SNAT_IN2OUT_NEXT_ICMP_ERROR,
SNAT_IN2OUT_NEXT_SLOW_PATH,
- SNAT_IN2OUT_NEXT_REASS,
SNAT_IN2OUT_N_NEXT,
} snat_in2out_next_t;
u32 rx_fib_index0, u32 thread_index)
{
udp_header_t *udp0 = ip4_next_header (ip0);
- snat_session_key_t key0, sm0;
clib_bihash_kv_8_8_t kv0, value0;
- key0.addr = ip0->dst_address;
- key0.port = udp0->dst_port;
- key0.protocol = proto0;
- key0.fib_index = sm->outside_fib_index;
- kv0.key = key0.as_u64;
+ init_nat_k (&kv0, ip0->dst_address, udp0->dst_port, sm->outside_fib_index,
+ proto0);
/* NAT packet aimed at external address if */
/* has active sessions */
&value0))
{
/* or is static mappings */
- if (!snat_static_mapping_match (sm, key0, &sm0, 1, 0, 0, 0, 0, 0))
+ ip4_address_t placeholder_addr;
+ u16 placeholder_port;
+ u32 placeholder_fib_index;
+ if (!snat_static_mapping_match
+ (sm, ip0->dst_address, udp0->dst_port, sm->outside_fib_index,
+ proto0, &placeholder_addr, &placeholder_port,
+ &placeholder_fib_index, 1, 0, 0, 0, 0, 0, 0))
return 0;
}
else
u32 proto0, u16 src_port, u16 dst_port,
u32 thread_index, u32 sw_if_index)
{
- snat_session_key_t key0;
clib_bihash_kv_8_8_t kv0, value0;
snat_interface_t *i;
/* src NAT check */
- key0.addr = ip0->src_address;
- key0.port = src_port;
- key0.protocol = proto0;
- key0.fib_index = ip4_fib_table_get_index_for_sw_if_index (sw_if_index);
- kv0.key = key0.as_u64;
+ init_nat_k (&kv0, ip0->src_address, src_port,
+ ip4_fib_table_get_index_for_sw_if_index (sw_if_index), proto0);
if (!clib_bihash_search_8_8
(&sm->per_thread_data[thread_index].out2in, &kv0, &value0))
return 1;
/* dst NAT check */
- key0.addr = ip0->dst_address;
- key0.port = dst_port;
- key0.protocol = proto0;
- kv0.key = key0.as_u64;
+ init_nat_k (&kv0, ip0->dst_address, dst_port,
+ ip4_fib_table_get_index_for_sw_if_index (sw_if_index), proto0);
if (!clib_bihash_search_8_8
(&sm->per_thread_data[thread_index].in2out, &kv0, &value0))
{
return 0;
}
+#ifndef CLIB_MARCH_VARIANT
int
nat44_i2o_is_idle_session_cb (clib_bihash_kv_8_8_t * kv, void *arg)
{
sess_timeout_time = s->last_heard + (f64) nat44_session_get_timeout (sm, s);
if (ctx->now >= sess_timeout_time)
{
- s_kv.key = s->out2in.as_u64;
+ init_nat_o2i_k (&s_kv, s);
if (clib_bihash_add_del_8_8 (&tsm->out2in, &s_kv, 0))
- nat_log_warn ("out2in key del failed");
+ nat_elog_warn ("out2in key del failed");
- snat_ipfix_logging_nat44_ses_delete (s->in2out.addr.as_u32,
- s->out2in.addr.as_u32,
- s->in2out.protocol,
- s->in2out.port,
- s->out2in.port,
- s->in2out.fib_index);
+ nat_ipfix_logging_nat44_ses_delete (ctx->thread_index,
+ s->in2out.addr.as_u32,
+ s->out2in.addr.as_u32,
+ s->nat_proto,
+ 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);
+ &s->out2in.addr, s->out2in.port, s->nat_proto);
+
+ nat_ha_sdel (&s->out2in.addr, s->out2in.port, &s->ext_host_addr,
+ s->ext_host_port, s->nat_proto, s->out2in.fib_index,
+ ctx->thread_index);
if (!snat_is_session_static (s))
snat_free_outside_address_and_port (sm->addresses, ctx->thread_index,
- &s->out2in);
+ &s->out2in.addr,
+ s->out2in.port, s->nat_proto);
nat44_delete_session (sm, s, ctx->thread_index);
return 1;
return 0;
}
+#endif
static u32
slow_path (snat_main_t * sm, vlib_buffer_t * b0,
ip4_header_t * ip0,
+ ip4_address_t i2o_addr,
+ u16 i2o_port,
u32 rx_fib_index0,
- snat_session_key_t * key0,
+ nat_protocol_t nat_proto,
snat_session_t ** sessionp,
vlib_node_runtime_t * node, u32 next0, u32 thread_index, f64 now)
{
snat_user_t *u;
snat_session_t *s = 0;
clib_bihash_kv_8_8_t kv0;
- snat_session_key_t key1;
- udp_header_t *udp0 = ip4_next_header (ip0);
u8 is_sm = 0;
nat_outside_fib_t *outside_fib;
fib_node_index_t fei = FIB_NODE_INDEX_INVALID;
},
};
nat44_is_idle_session_ctx_t ctx0;
+ ip4_address_t sm_addr;
+ u16 sm_port;
+ u32 sm_fib_index;
- if (PREDICT_FALSE (maximum_sessions_exceeded (sm, thread_index)))
+ if (PREDICT_FALSE (nat44_maximum_sessions_exceeded (sm, thread_index)))
{
b0->error = node->errors[SNAT_IN2OUT_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_per_thread);
+ nat_elog_notice ("maximum sessions exceeded");
return SNAT_IN2OUT_NEXT_DROP;
}
- key1.protocol = key0->protocol;
-
/* First try to match static mapping by local address and port */
if (snat_static_mapping_match
- (sm, *key0, &key1, 0, 0, 0, 0, 0, &identity_nat))
+ (sm, i2o_addr, i2o_port, rx_fib_index0, nat_proto, &sm_addr,
+ &sm_port, &sm_fib_index, 0, 0, 0, 0, 0, &identity_nat, 0))
{
/* Try to create dynamic translation */
if (snat_alloc_outside_address_and_port (sm->addresses, rx_fib_index0,
- thread_index, &key1,
+ thread_index,
+ nat_proto,
+ &sm_addr, &sm_port,
sm->port_per_thread,
sm->per_thread_data
[thread_index].snat_thread_index))
thread_index);
if (!u)
{
- nat_log_warn ("create NAT user failed");
+ b0->error = node->errors[SNAT_IN2OUT_ERROR_CANNOT_CREATE_USER];
return SNAT_IN2OUT_NEXT_DROP;
}
- s = nat_session_alloc_or_recycle (sm, u, thread_index);
+ s = nat_session_alloc_or_recycle (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");
return SNAT_IN2OUT_NEXT_DROP;
}
if (is_sm)
s->flags |= SNAT_SESSION_FLAG_STATIC_MAPPING;
user_session_increment (sm, u, is_sm);
- s->in2out = *key0;
- s->out2in = key1;
- s->out2in.protocol = key0->protocol;
+ s->in2out.addr = i2o_addr;
+ s->in2out.port = i2o_port;
+ s->in2out.fib_index = rx_fib_index0;
+ s->nat_proto = nat_proto;
+ s->out2in.addr = sm_addr;
+ s->out2in.port = sm_port;
s->out2in.fib_index = sm->outside_fib_index;
switch (vec_len (sm->outside_fibs))
{
break;
}
s->ext_host_addr.as_u32 = ip0->dst_address.as_u32;
- s->ext_host_port = udp0->dst_port;
+ s->ext_host_port = vnet_buffer (b0)->ip.reass.l4_dst_port;
*sessionp = s;
/* Add to translation hashes */
ctx0.now = now;
ctx0.thread_index = thread_index;
- kv0.key = s->in2out.as_u64;
- kv0.value = s - sm->per_thread_data[thread_index].sessions;
+ init_nat_i2o_kv (&kv0, s, s - sm->per_thread_data[thread_index].sessions);
if (clib_bihash_add_or_overwrite_stale_8_8
(&sm->per_thread_data[thread_index].in2out, &kv0,
nat44_i2o_is_idle_session_cb, &ctx0))
- nat_log_notice ("in2out key add failed");
-
- kv0.key = s->out2in.as_u64;
- kv0.value = s - sm->per_thread_data[thread_index].sessions;
+ nat_elog_notice ("in2out key add failed");
+ init_nat_o2i_kv (&kv0, s, s - sm->per_thread_data[thread_index].sessions);
if (clib_bihash_add_or_overwrite_stale_8_8
(&sm->per_thread_data[thread_index].out2in, &kv0,
nat44_o2i_is_idle_session_cb, &ctx0))
- nat_log_notice ("out2in key add failed");
+ nat_elog_notice ("out2in key add failed");
/* log NAT event */
- snat_ipfix_logging_nat44_ses_create (s->in2out.addr.as_u32,
- s->out2in.addr.as_u32,
- s->in2out.protocol,
- s->in2out.port,
- s->out2in.port, s->in2out.fib_index);
+ nat_ipfix_logging_nat44_ses_create (thread_index,
+ s->in2out.addr.as_u32,
+ s->out2in.addr.as_u32,
+ s->nat_proto,
+ 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);
+ s->out2in.port, s->nat_proto);
+
+ 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->nat_proto, s->in2out.fib_index, s->flags, thread_index, 0);
return next0;
}
-static_always_inline
- snat_in2out_error_t icmp_get_key (ip4_header_t * ip0,
- snat_session_key_t * p_key0)
+#ifndef CLIB_MARCH_VARIANT
+static_always_inline snat_in2out_error_t
+icmp_get_key (vlib_buffer_t * b, ip4_header_t * ip0,
+ ip4_address_t * addr, u16 * port, nat_protocol_t * nat_proto)
{
icmp46_header_t *icmp0;
- snat_session_key_t key0;
icmp_echo_header_t *echo0, *inner_echo0 = 0;
ip4_header_t *inner_ip0 = 0;
void *l4_header = 0;
icmp0 = (icmp46_header_t *) ip4_next_header (ip0);
echo0 = (icmp_echo_header_t *) (icmp0 + 1);
- if (!icmp_is_error_message (icmp0))
+ if (!icmp_type_is_error_message
+ (vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags))
{
- key0.protocol = SNAT_PROTOCOL_ICMP;
- key0.addr = ip0->src_address;
- key0.port = echo0->identifier;
+ *nat_proto = NAT_PROTOCOL_ICMP;
+ *addr = ip0->src_address;
+ *port = vnet_buffer (b)->ip.reass.l4_src_port;
}
else
{
inner_ip0 = (ip4_header_t *) (echo0 + 1);
l4_header = ip4_next_header (inner_ip0);
- key0.protocol = ip_proto_to_snat_proto (inner_ip0->protocol);
- key0.addr = inner_ip0->dst_address;
- switch (key0.protocol)
+ *nat_proto = ip_proto_to_nat_proto (inner_ip0->protocol);
+ *addr = inner_ip0->dst_address;
+ switch (*nat_proto)
{
- case SNAT_PROTOCOL_ICMP:
+ case NAT_PROTOCOL_ICMP:
inner_icmp0 = (icmp46_header_t *) l4_header;
inner_echo0 = (icmp_echo_header_t *) (inner_icmp0 + 1);
- key0.port = inner_echo0->identifier;
+ *port = inner_echo0->identifier;
break;
- case SNAT_PROTOCOL_UDP:
- case SNAT_PROTOCOL_TCP:
- key0.port = ((tcp_udp_header_t *) l4_header)->dst_port;
+ case NAT_PROTOCOL_UDP:
+ case NAT_PROTOCOL_TCP:
+ *port = ((tcp_udp_header_t *) l4_header)->dst_port;
break;
default:
return SNAT_IN2OUT_ERROR_UNSUPPORTED_PROTOCOL;
}
}
- *p_key0 = key0;
return -1; /* success */
}
* @param[in,out] node NAT node runtime
* @param[in] thread_index thread index
* @param[in,out] b0 buffer containing packet to be translated
+ * @param[in,out] ip0 ip header
* @param[out] p_proto protocol used for matching
* @param[out] p_value address and port after NAT translation
* @param[out] p_dont_translate if packet should not be translated
u32
icmp_match_in2out_slow (snat_main_t * sm, vlib_node_runtime_t * node,
u32 thread_index, vlib_buffer_t * b0,
- ip4_header_t * ip0, u8 * p_proto,
- snat_session_key_t * p_value,
- u8 * p_dont_translate, void *d, void *e)
+ ip4_header_t * ip0, ip4_address_t * addr, u16 * port,
+ u32 * fib_index, nat_protocol_t * proto, void *d,
+ void *e, u8 * dont_translate)
{
- icmp46_header_t *icmp0;
+ snat_main_per_thread_data_t *tsm = &sm->per_thread_data[thread_index];
u32 sw_if_index0;
- u32 rx_fib_index0;
- snat_session_key_t key0;
snat_session_t *s0 = 0;
- u8 dont_translate = 0;
clib_bihash_kv_8_8_t kv0, value0;
u32 next0 = ~0;
int err;
+ vlib_main_t *vm = vlib_get_main ();
+ *dont_translate = 0;
- icmp0 = (icmp46_header_t *) ip4_next_header (ip0);
sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
- rx_fib_index0 = ip4_fib_table_get_index_for_sw_if_index (sw_if_index0);
+ *fib_index = ip4_fib_table_get_index_for_sw_if_index (sw_if_index0);
- err = icmp_get_key (ip0, &key0);
+ err = icmp_get_key (b0, ip0, addr, port, proto);
if (err != -1)
{
b0->error = node->errors[err];
next0 = SNAT_IN2OUT_NEXT_DROP;
goto out;
}
- key0.fib_index = rx_fib_index0;
- kv0.key = key0.as_u64;
-
- if (clib_bihash_search_8_8 (&sm->per_thread_data[thread_index].in2out, &kv0,
- &value0))
+ init_nat_k (&kv0, *addr, *port, *fib_index, *proto);
+ if (clib_bihash_search_8_8 (&tsm->in2out, &kv0, &value0))
{
if (vnet_buffer (b0)->sw_if_index[VLIB_TX] != ~0)
{
- if (PREDICT_FALSE (nat_not_translate_output_feature (sm, ip0,
- key0.protocol,
- key0.port,
- key0.port,
- thread_index,
- sw_if_index0)))
+ if (PREDICT_FALSE
+ (nat_not_translate_output_feature
+ (sm, ip0, *proto, *port, *port, thread_index, sw_if_index0)))
{
- dont_translate = 1;
+ *dont_translate = 1;
goto out;
}
}
else
{
if (PREDICT_FALSE (snat_not_translate (sm, node, sw_if_index0,
- ip0, SNAT_PROTOCOL_ICMP,
- rx_fib_index0,
- thread_index)))
+ ip0, NAT_PROTOCOL_ICMP,
+ *fib_index, thread_index)))
{
- dont_translate = 1;
+ *dont_translate = 1;
goto out;
}
}
- if (PREDICT_FALSE (icmp_is_error_message (icmp0)))
+ if (PREDICT_FALSE
+ (icmp_type_is_error_message
+ (vnet_buffer (b0)->ip.reass.icmp_type_or_tcp_flags)))
{
b0->error = node->errors[SNAT_IN2OUT_ERROR_BAD_ICMP_TYPE];
next0 = SNAT_IN2OUT_NEXT_DROP;
goto out;
}
- next0 = slow_path (sm, b0, ip0, rx_fib_index0, &key0, &s0, node, next0,
- thread_index, vlib_time_now (sm->vlib_main));
+ next0 =
+ slow_path (sm, b0, ip0, *addr, *port, *fib_index, *proto, &s0, node,
+ next0, thread_index, vlib_time_now (vm));
if (PREDICT_FALSE (next0 == SNAT_IN2OUT_NEXT_DROP))
goto out;
if (!s0)
{
- dont_translate = 1;
+ *dont_translate = 1;
goto out;
}
}
else
{
- if (PREDICT_FALSE (icmp0->type != ICMP4_echo_request &&
- icmp0->type != ICMP4_echo_reply &&
- !icmp_is_error_message (icmp0)))
+ if (PREDICT_FALSE
+ (vnet_buffer (b0)->ip.reass.icmp_type_or_tcp_flags !=
+ ICMP4_echo_request
+ && vnet_buffer (b0)->ip.reass.icmp_type_or_tcp_flags !=
+ ICMP4_echo_reply
+ && !icmp_type_is_error_message (vnet_buffer (b0)->ip.
+ reass.icmp_type_or_tcp_flags)))
{
b0->error = node->errors[SNAT_IN2OUT_ERROR_BAD_ICMP_TYPE];
next0 = SNAT_IN2OUT_NEXT_DROP;
goto out;
}
- s0 = pool_elt_at_index (sm->per_thread_data[thread_index].sessions,
- value0.value);
+ s0 = pool_elt_at_index (tsm->sessions, value0.value);
}
out:
- *p_proto = key0.protocol;
if (s0)
- *p_value = s0->out2in;
- *p_dont_translate = dont_translate;
+ {
+ *addr = s0->out2in.addr;
+ *port = s0->out2in.port;
+ *fib_index = s0->out2in.fib_index;
+ }
if (d)
- *(snat_session_t **) d = s0;
+ *(snat_session_t **) (d) = s0;
return next0;
}
+#endif
+#ifndef CLIB_MARCH_VARIANT
/**
* Get address and port values to be used for ICMP packet translation
*
* @param[in,out] node NAT node runtime
* @param[in] thread_index thread index
* @param[in,out] b0 buffer containing packet to be translated
+ * @param[in,out] ip0 ip header
* @param[out] p_proto protocol used for matching
* @param[out] p_value address and port after NAT translation
* @param[out] p_dont_translate if packet should not be translated
u32
icmp_match_in2out_fast (snat_main_t * sm, vlib_node_runtime_t * node,
u32 thread_index, vlib_buffer_t * b0,
- ip4_header_t * ip0, u8 * p_proto,
- snat_session_key_t * p_value,
- u8 * p_dont_translate, void *d, void *e)
+ ip4_header_t * ip0, ip4_address_t * addr, u16 * port,
+ u32 * fib_index, nat_protocol_t * proto, void *d,
+ void *e, u8 * dont_translate)
{
- icmp46_header_t *icmp0;
u32 sw_if_index0;
- u32 rx_fib_index0;
- snat_session_key_t key0;
- snat_session_key_t sm0;
- u8 dont_translate = 0;
u8 is_addr_only;
u32 next0 = ~0;
int err;
+ *dont_translate = 0;
- icmp0 = (icmp46_header_t *) ip4_next_header (ip0);
sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
- rx_fib_index0 = ip4_fib_table_get_index_for_sw_if_index (sw_if_index0);
+ *fib_index = ip4_fib_table_get_index_for_sw_if_index (sw_if_index0);
- err = icmp_get_key (ip0, &key0);
+ err = icmp_get_key (b0, ip0, addr, port, proto);
if (err != -1)
{
b0->error = node->errors[err];
next0 = SNAT_IN2OUT_NEXT_DROP;
- goto out2;
+ goto out;
}
- key0.fib_index = rx_fib_index0;
+
+ ip4_address_t sm_addr;
+ u16 sm_port;
+ u32 sm_fib_index;
if (snat_static_mapping_match
- (sm, key0, &sm0, 0, &is_addr_only, 0, 0, 0, 0))
+ (sm, *addr, *port, *fib_index, *proto, &sm_addr, &sm_port,
+ &sm_fib_index, 0, &is_addr_only, 0, 0, 0, 0, 0))
{
if (PREDICT_FALSE (snat_not_translate_fast (sm, node, sw_if_index0, ip0,
IP_PROTOCOL_ICMP,
- rx_fib_index0)))
+ *fib_index)))
{
- dont_translate = 1;
+ *dont_translate = 1;
goto out;
}
- if (icmp_is_error_message (icmp0))
+ if (icmp_type_is_error_message
+ (vnet_buffer (b0)->ip.reass.icmp_type_or_tcp_flags))
{
next0 = SNAT_IN2OUT_NEXT_DROP;
goto out;
goto out;
}
- if (PREDICT_FALSE (icmp0->type != ICMP4_echo_request &&
- (icmp0->type != ICMP4_echo_reply || !is_addr_only) &&
- !icmp_is_error_message (icmp0)))
+ if (PREDICT_FALSE
+ (vnet_buffer (b0)->ip.reass.icmp_type_or_tcp_flags != ICMP4_echo_request
+ && (vnet_buffer (b0)->ip.reass.icmp_type_or_tcp_flags !=
+ ICMP4_echo_reply || !is_addr_only)
+ && !icmp_type_is_error_message (vnet_buffer (b0)->ip.
+ reass.icmp_type_or_tcp_flags)))
{
b0->error = node->errors[SNAT_IN2OUT_ERROR_BAD_ICMP_TYPE];
next0 = SNAT_IN2OUT_NEXT_DROP;
}
out:
- *p_value = sm0;
-out2:
- *p_proto = key0.protocol;
- *p_dont_translate = dont_translate;
return next0;
}
+#endif
+#ifndef CLIB_MARCH_VARIANT
u32
icmp_in2out (snat_main_t * sm,
vlib_buffer_t * b0,
vlib_node_runtime_t * node,
u32 next0, u32 thread_index, void *d, void *e)
{
- snat_session_key_t sm0;
- u8 protocol;
+ vlib_main_t *vm = vlib_get_main ();
+ ip4_address_t addr;
+ u16 port;
+ u32 fib_index;
+ nat_protocol_t protocol;
icmp_echo_header_t *echo0, *inner_echo0 = 0;
ip4_header_t *inner_ip0;
void *l4_header = 0;
echo0 = (icmp_echo_header_t *) (icmp0 + 1);
- next0_tmp = sm->icmp_match_in2out_cb (sm, node, thread_index, b0, ip0,
- &protocol, &sm0, &dont_translate, d,
- e);
+ next0_tmp =
+ sm->icmp_match_in2out_cb (sm, node, thread_index, b0, ip0, &addr, &port,
+ &fib_index, &protocol, d, e, &dont_translate);
if (next0_tmp != ~0)
next0 = next0_tmp;
if (next0 == SNAT_IN2OUT_NEXT_DROP || dont_translate)
if (PREDICT_TRUE (!ip4_is_fragment (ip0)))
{
- sum0 = ip_incremental_checksum_buffer (sm->vlib_main, b0, (u8 *) icmp0 -
- (u8 *)
- vlib_buffer_get_current (b0),
- ntohs (ip0->length) -
- ip4_header_bytes (ip0), 0);
+ 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))
{
}
old_addr0 = ip0->src_address.as_u32;
- new_addr0 = ip0->src_address.as_u32 = sm0.addr.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 (icmp0->checksum == 0)
- icmp0->checksum = 0xffff;
-
- if (!icmp_is_error_message (icmp0))
- {
- new_id0 = sm0.port;
- if (PREDICT_FALSE (new_id0 != echo0->identifier))
- {
- old_id0 = echo0->identifier;
- new_id0 = sm0.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
+ if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
{
- inner_ip0 = (ip4_header_t *) (echo0 + 1);
- l4_header = ip4_next_header (inner_ip0);
+ if (icmp0->checksum == 0)
+ icmp0->checksum = 0xffff;
- if (!ip4_header_checksum_is_valid (inner_ip0))
+ if (!icmp_type_is_error_message (icmp0->type))
{
- next0 = SNAT_IN2OUT_NEXT_DROP;
- goto out;
+ 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);
+ }
}
-
- /* update inner destination IP address */
- old_addr0 = inner_ip0->dst_address.as_u32;
- inner_ip0->dst_address = sm0.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)
+ else
{
- case SNAT_PROTOCOL_ICMP:
- inner_icmp0 = (icmp46_header_t *) l4_header;
- inner_echo0 = (icmp_echo_header_t *) (inner_icmp0 + 1);
+ inner_ip0 = (ip4_header_t *) (echo0 + 1);
+ l4_header = ip4_next_header (inner_ip0);
- old_id0 = inner_echo0->identifier;
- new_id0 = sm0.port;
- inner_echo0->identifier = new_id0;
+ if (!ip4_header_checksum_is_valid (inner_ip0))
+ {
+ next0 = SNAT_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_id0, new_id0, icmp_echo_header_t,
- identifier);
+ sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
+ dst_address /* changed member */ );
icmp0->checksum = ip_csum_fold (sum0);
- break;
- case SNAT_PROTOCOL_UDP:
- case SNAT_PROTOCOL_TCP:
- old_id0 = ((tcp_udp_header_t *) l4_header)->dst_port;
- new_id0 = sm0.port;
- ((tcp_udp_header_t *) l4_header)->dst_port = new_id0;
+ /* 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_id0, new_id0, tcp_udp_header_t,
- dst_port);
+ sum0 =
+ ip_csum_update (sum0, old_checksum0, new_checksum0, ip4_header_t,
+ checksum);
icmp0->checksum = ip_csum_fold (sum0);
- break;
- default:
- ASSERT (0);
+
+ 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)
{
- if (sm->deterministic ||
- 0 != snat_icmp_hairpinning (sm, b0, ip0, icmp0,
+ if (0 != snat_icmp_hairpinning (sm, b0, ip0, icmp0,
sm->endpoint_dependent))
- vnet_buffer (b0)->sw_if_index[VLIB_TX] = sm0.fib_index;
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = fib_index;
}
out:
return next0;
}
+#endif
static inline u32
icmp_in2out_slow_path (snat_main_t * sm,
u32 next0,
f64 now, u32 thread_index, snat_session_t ** p_s0)
{
+ vlib_main_t *vm = vlib_get_main ();
+
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;
/* Accounting */
nat44_session_update_counters (s0, now,
vlib_buffer_length_in_chain
- (sm->vlib_main, b0));
+ (vm, b0), thread_index);
/* Per-user LRU list maintenance */
nat44_session_update_lru (sm, s0, thread_index);
}
{
clib_bihash_kv_8_8_t kv, value;
snat_static_mapping_t *m;
- snat_session_key_t m_key;
u32 old_addr, new_addr;
ip_csum_t sum;
- m_key.addr = ip->src_address;
- m_key.port = 0;
- m_key.protocol = 0;
- m_key.fib_index = rx_fib_index;
- kv.key = m_key.as_u64;
+ init_nat_k (&kv, ip->src_address, 0, rx_fib_index, 0);
if (clib_bihash_search_8_8 (&sm->static_mapping_by_local, &kv, &value))
return 1;
vlib_frame_t * frame, int is_slow_path,
int is_output_feature)
{
- u32 n_left_from, *from, *to_next;
- snat_in2out_next_t next_index;
- u32 pkts_processed = 0;
+ u32 n_left_from, *from;
snat_main_t *sm = &snat_main;
f64 now = vlib_time_now (vm);
- u32 stats_node_index;
u32 thread_index = vm->thread_index;
- stats_node_index = is_slow_path ? snat_in2out_slowpath_node.index :
- snat_in2out_node.index;
-
from = vlib_frame_vector_args (frame);
n_left_from = frame->n_vectors;
- next_index = node->cached_next_index;
- while (n_left_from > 0)
+ vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
+ u16 nexts[VLIB_FRAME_SIZE], *next = nexts;
+ vlib_get_buffers (vm, from, b, n_left_from);
+
+ while (n_left_from >= 2)
{
- u32 n_left_to_next;
+ vlib_buffer_t *b0, *b1;
+ u32 next0, next1;
+ u32 sw_if_index0, sw_if_index1;
+ ip4_header_t *ip0, *ip1;
+ ip_csum_t sum0, sum1;
+ u32 new_addr0, old_addr0, new_addr1, old_addr1;
+ u16 old_port0, new_port0, old_port1, new_port1;
+ udp_header_t *udp0, *udp1;
+ tcp_header_t *tcp0, *tcp1;
+ icmp46_header_t *icmp0, *icmp1;
+ u32 rx_fib_index0, rx_fib_index1;
+ u32 proto0, proto1;
+ snat_session_t *s0 = 0, *s1 = 0;
+ clib_bihash_kv_8_8_t kv0, value0, kv1, value1;
+ u32 iph_offset0 = 0, iph_offset1 = 0;
+
+ b0 = *b;
+ b++;
+ b1 = *b;
+ b++;
+
+ /* Prefetch next iteration. */
+ if (PREDICT_TRUE (n_left_from >= 4))
+ {
+ vlib_buffer_t *p2, *p3;
- vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+ p2 = *b;
+ p3 = *(b + 1);
- while (n_left_from >= 4 && n_left_to_next >= 2)
- {
- u32 bi0, bi1;
- vlib_buffer_t *b0, *b1;
- u32 next0, next1;
- u32 sw_if_index0, sw_if_index1;
- ip4_header_t *ip0, *ip1;
- ip_csum_t sum0, sum1;
- u32 new_addr0, old_addr0, new_addr1, old_addr1;
- u16 old_port0, new_port0, old_port1, new_port1;
- udp_header_t *udp0, *udp1;
- tcp_header_t *tcp0, *tcp1;
- icmp46_header_t *icmp0, *icmp1;
- snat_session_key_t key0, key1;
- u32 rx_fib_index0, rx_fib_index1;
- u32 proto0, proto1;
- snat_session_t *s0 = 0, *s1 = 0;
- clib_bihash_kv_8_8_t kv0, value0, kv1, value1;
- u32 iph_offset0 = 0, iph_offset1 = 0;
-
- /* Prefetch next iteration. */
- {
- vlib_buffer_t *p2, *p3;
-
- p2 = vlib_get_buffer (vm, from[2]);
- p3 = vlib_get_buffer (vm, from[3]);
-
- vlib_prefetch_buffer_header (p2, LOAD);
- vlib_prefetch_buffer_header (p3, LOAD);
-
- CLIB_PREFETCH (p2->data, CLIB_CACHE_LINE_BYTES, STORE);
- CLIB_PREFETCH (p3->data, CLIB_CACHE_LINE_BYTES, STORE);
- }
-
- /* speculatively enqueue b0 and b1 to the current next frame */
- to_next[0] = bi0 = from[0];
- to_next[1] = bi1 = from[1];
- from += 2;
- to_next += 2;
- n_left_from -= 2;
- n_left_to_next -= 2;
+ vlib_prefetch_buffer_header (p2, LOAD);
+ vlib_prefetch_buffer_header (p3, LOAD);
- b0 = vlib_get_buffer (vm, bi0);
- b1 = vlib_get_buffer (vm, bi1);
+ CLIB_PREFETCH (p2->data, CLIB_CACHE_LINE_BYTES, LOAD);
+ CLIB_PREFETCH (p3->data, CLIB_CACHE_LINE_BYTES, LOAD);
+ }
- if (is_output_feature)
- iph_offset0 = vnet_buffer (b0)->ip.save_rewrite_length;
+ if (is_output_feature)
+ iph_offset0 = vnet_buffer (b0)->ip.reass.save_rewrite_length;
- ip0 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b0) +
- iph_offset0);
+ 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;
+ udp0 = ip4_next_header (ip0);
+ tcp0 = (tcp_header_t *) udp0;
+ icmp0 = (icmp46_header_t *) udp0;
- sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
- rx_fib_index0 = vec_elt (sm->ip4_main->fib_index_by_sw_if_index,
- sw_if_index0);
+ sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+ rx_fib_index0 = vec_elt (sm->ip4_main->fib_index_by_sw_if_index,
+ sw_if_index0);
- next0 = next1 = SNAT_IN2OUT_NEXT_LOOKUP;
+ next0 = next1 = SNAT_IN2OUT_NEXT_LOOKUP;
- if (PREDICT_FALSE (ip0->ttl == 1))
- {
- vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
- icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded,
- ICMP4_time_exceeded_ttl_exceeded_in_transit,
- 0);
- next0 = SNAT_IN2OUT_NEXT_ICMP_ERROR;
- goto trace00;
- }
+ if (PREDICT_FALSE (ip0->ttl == 1))
+ {
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
+ icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded,
+ ICMP4_time_exceeded_ttl_exceeded_in_transit,
+ 0);
+ next0 = SNAT_IN2OUT_NEXT_ICMP_ERROR;
+ goto trace00;
+ }
- proto0 = ip_proto_to_snat_proto (ip0->protocol);
+ proto0 = ip_proto_to_nat_proto (ip0->protocol);
- /* Next configured feature, probably ip4-lookup */
- if (is_slow_path)
+ /* Next configured feature, probably ip4-lookup */
+ if (is_slow_path)
+ {
+ if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_OTHER))
{
- if (PREDICT_FALSE (proto0 == ~0))
+ if (nat_in2out_sm_unknown_proto (sm, b0, ip0, rx_fib_index0))
{
- if (nat_in2out_sm_unknown_proto
- (sm, b0, ip0, rx_fib_index0))
- {
- next0 = SNAT_IN2OUT_NEXT_DROP;
- b0->error =
- node->errors[SNAT_IN2OUT_ERROR_UNSUPPORTED_PROTOCOL];
- }
- goto trace00;
+ next0 = SNAT_IN2OUT_NEXT_DROP;
+ b0->error =
+ node->errors[SNAT_IN2OUT_ERROR_UNSUPPORTED_PROTOCOL];
}
+ vlib_increment_simple_counter (is_slow_path ? &sm->
+ counters.slowpath.in2out.
+ other : &sm->counters.fastpath.
+ in2out.other, thread_index,
+ sw_if_index0, 1);
+ goto trace00;
+ }
- if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP))
- {
- next0 = icmp_in2out_slow_path
- (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0,
- node, next0, now, thread_index, &s0);
- goto trace00;
- }
+ if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
+ {
+ next0 = icmp_in2out_slow_path
+ (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0,
+ node, next0, now, thread_index, &s0);
+ vlib_increment_simple_counter (is_slow_path ? &sm->
+ counters.slowpath.in2out.
+ icmp : &sm->counters.fastpath.
+ in2out.icmp, thread_index,
+ sw_if_index0, 1);
+ goto trace00;
}
- else
+ }
+ else
+ {
+ if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_OTHER))
{
- if (PREDICT_FALSE (proto0 == ~0))
- {
- next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
- goto trace00;
- }
-
- if (ip4_is_fragment (ip0))
- {
- next0 = SNAT_IN2OUT_NEXT_REASS;
- goto trace00;
- }
-
- if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP))
- {
- next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
- goto trace00;
- }
+ next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
+ goto trace00;
}
- key0.addr = ip0->src_address;
- key0.port = udp0->src_port;
- key0.protocol = proto0;
- key0.fib_index = rx_fib_index0;
-
- kv0.key = key0.as_u64;
+ if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
+ {
+ next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
+ goto trace00;
+ }
+ }
- if (PREDICT_FALSE
- (clib_bihash_search_8_8
- (&sm->per_thread_data[thread_index].in2out, &kv0,
- &value0) != 0))
+ init_nat_k (&kv0, ip0->src_address,
+ vnet_buffer (b0)->ip.reass.l4_src_port, rx_fib_index0,
+ proto0);
+ if (PREDICT_FALSE
+ (clib_bihash_search_8_8
+ (&sm->per_thread_data[thread_index].in2out, &kv0, &value0) != 0))
+ {
+ if (is_slow_path)
{
- if (is_slow_path)
+ if (is_output_feature)
{
- if (is_output_feature)
- {
- if (PREDICT_FALSE (nat_not_translate_output_feature (sm,
- ip0,
- proto0,
- udp0->src_port,
- udp0->dst_port,
- thread_index,
- sw_if_index0)))
- goto trace00;
- }
- else
- {
- if (PREDICT_FALSE
- (snat_not_translate
- (sm, node, sw_if_index0, ip0, proto0,
- rx_fib_index0, thread_index)))
- goto trace00;
- }
-
- next0 = slow_path (sm, b0, ip0, rx_fib_index0, &key0,
- &s0, node, next0, thread_index, now);
- if (PREDICT_FALSE (next0 == SNAT_IN2OUT_NEXT_DROP))
+ if (PREDICT_FALSE
+ (nat_not_translate_output_feature
+ (sm, ip0, proto0,
+ vnet_buffer (b0)->ip.reass.l4_src_port,
+ vnet_buffer (b0)->ip.reass.l4_dst_port,
+ thread_index, sw_if_index0)))
goto trace00;
- if (PREDICT_FALSE (!s0))
+ /*
+ * Send DHCP packets to the ipv4 stack, or we won't
+ * be able to use dhcp client on the outside interface
+ */
+ if (PREDICT_FALSE
+ (proto0 == NAT_PROTOCOL_UDP
+ && (vnet_buffer (b0)->ip.reass.l4_dst_port ==
+ clib_host_to_net_u16
+ (UDP_DST_PORT_dhcp_to_server))
+ && ip0->dst_address.as_u32 == 0xffffffff))
goto trace00;
}
else
{
- next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
- goto trace00;
+ if (PREDICT_FALSE
+ (snat_not_translate
+ (sm, node, sw_if_index0, ip0, proto0,
+ rx_fib_index0, thread_index)))
+ goto trace00;
}
+
+ next0 = slow_path (sm, b0, ip0,
+ ip0->src_address,
+ vnet_buffer (b0)->ip.reass.l4_src_port,
+ rx_fib_index0,
+ proto0, &s0, node, next0, thread_index, now);
+ if (PREDICT_FALSE (next0 == SNAT_IN2OUT_NEXT_DROP))
+ goto trace00;
+
+ if (PREDICT_FALSE (!s0))
+ goto trace00;
}
else
- s0 =
- pool_elt_at_index (sm->per_thread_data[thread_index].sessions,
- value0.value);
+ {
+ next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
+ goto trace00;
+ }
+ }
+ else
+ s0 =
+ pool_elt_at_index (sm->per_thread_data[thread_index].sessions,
+ value0.value);
- b0->flags |= VNET_BUFFER_F_IS_NATED;
+ b0->flags |= VNET_BUFFER_F_IS_NATED;
- 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;
+ 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 */ );
- ip0->checksum = ip_csum_fold (sum0);
+ 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 (PREDICT_TRUE (proto0 == SNAT_PROTOCOL_TCP))
- {
- old_port0 = tcp0->src_port;
- tcp0->src_port = s0->out2in.port;
- new_port0 = tcp0->src_port;
+ if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP))
+ {
+ if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
+ {
+ old_port0 = vnet_buffer (b0)->ip.reass.l4_src_port;
+ new_port0 = udp0->src_port = s0->out2in.port;
sum0 = tcp0->checksum;
sum0 = ip_csum_update (sum0, old_addr0, new_addr0,
ip4_header_t,
sum0 = ip_csum_update (sum0, old_port0, new_port0,
ip4_header_t /* cheat */ ,
length /* changed member */ );
- mss_clamping (sm, tcp0, &sum0);
+ mss_clamping (sm->mss_clamping, tcp0, &sum0);
tcp0->checksum = ip_csum_fold (sum0);
}
- else
+ vlib_increment_simple_counter (is_slow_path ? &sm->
+ counters.slowpath.in2out.tcp : &sm->
+ counters.fastpath.in2out.tcp,
+ thread_index, sw_if_index0, 1);
+ }
+ else
+ {
+ if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
{
- old_port0 = udp0->src_port;
udp0->src_port = s0->out2in.port;
- udp0->checksum = 0;
+ if (PREDICT_FALSE (udp0->checksum))
+ {
+ old_port0 = vnet_buffer (b0)->ip.reass.l4_src_port;
+ new_port0 = udp0->src_port;
+ sum0 = udp0->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 */ );
+ udp0->checksum = ip_csum_fold (sum0);
+ }
}
+ vlib_increment_simple_counter (is_slow_path ? &sm->
+ counters.slowpath.in2out.udp : &sm->
+ counters.fastpath.in2out.udp,
+ thread_index, sw_if_index0, 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);
- trace00:
+ /* Accounting */
+ nat44_session_update_counters (s0, now,
+ vlib_buffer_length_in_chain (vm, b0),
+ thread_index);
+ /* Per-user LRU list maintenance */
+ nat44_session_update_lru (sm, s0, thread_index);
+ trace00:
- if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
- && (b0->flags & VLIB_BUFFER_IS_TRACED)))
- {
- snat_in2out_trace_t *t =
- vlib_add_trace (vm, node, b0, sizeof (*t));
- t->is_slow_path = is_slow_path;
- t->sw_if_index = sw_if_index0;
- t->next_index = next0;
- t->session_index = ~0;
- if (s0)
- t->session_index =
- s0 - sm->per_thread_data[thread_index].sessions;
- }
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
+ && (b0->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+ snat_in2out_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t));
+ t->is_slow_path = is_slow_path;
+ t->sw_if_index = sw_if_index0;
+ t->next_index = next0;
+ t->session_index = ~0;
+ if (s0)
+ t->session_index =
+ s0 - sm->per_thread_data[thread_index].sessions;
+ }
- pkts_processed += next0 != SNAT_IN2OUT_NEXT_DROP;
+ if (next0 == SNAT_IN2OUT_NEXT_DROP)
+ {
+ vlib_increment_simple_counter (is_slow_path ? &sm->
+ counters.slowpath.in2out.
+ drops : &sm->counters.fastpath.
+ in2out.drops, thread_index,
+ sw_if_index0, 1);
+ }
- if (is_output_feature)
- iph_offset1 = vnet_buffer (b1)->ip.save_rewrite_length;
+ if (is_output_feature)
+ iph_offset1 = vnet_buffer (b1)->ip.reass.save_rewrite_length;
- ip1 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b1) +
- iph_offset1);
+ ip1 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b1) +
+ iph_offset1);
- udp1 = ip4_next_header (ip1);
- tcp1 = (tcp_header_t *) udp1;
- icmp1 = (icmp46_header_t *) udp1;
+ udp1 = ip4_next_header (ip1);
+ tcp1 = (tcp_header_t *) udp1;
+ icmp1 = (icmp46_header_t *) udp1;
- sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
- rx_fib_index1 = vec_elt (sm->ip4_main->fib_index_by_sw_if_index,
- sw_if_index1);
+ sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
+ rx_fib_index1 = vec_elt (sm->ip4_main->fib_index_by_sw_if_index,
+ sw_if_index1);
- if (PREDICT_FALSE (ip1->ttl == 1))
- {
- vnet_buffer (b1)->sw_if_index[VLIB_TX] = (u32) ~ 0;
- icmp4_error_set_vnet_buffer (b1, ICMP4_time_exceeded,
- ICMP4_time_exceeded_ttl_exceeded_in_transit,
- 0);
- next1 = SNAT_IN2OUT_NEXT_ICMP_ERROR;
- goto trace01;
- }
+ if (PREDICT_FALSE (ip1->ttl == 1))
+ {
+ vnet_buffer (b1)->sw_if_index[VLIB_TX] = (u32) ~ 0;
+ icmp4_error_set_vnet_buffer (b1, ICMP4_time_exceeded,
+ ICMP4_time_exceeded_ttl_exceeded_in_transit,
+ 0);
+ next1 = SNAT_IN2OUT_NEXT_ICMP_ERROR;
+ goto trace01;
+ }
- proto1 = ip_proto_to_snat_proto (ip1->protocol);
+ proto1 = ip_proto_to_nat_proto (ip1->protocol);
- /* Next configured feature, probably ip4-lookup */
- if (is_slow_path)
+ /* Next configured feature, probably ip4-lookup */
+ if (is_slow_path)
+ {
+ if (PREDICT_FALSE (proto1 == NAT_PROTOCOL_OTHER))
{
- if (PREDICT_FALSE (proto1 == ~0))
+ if (nat_in2out_sm_unknown_proto (sm, b1, ip1, rx_fib_index1))
{
- if (nat_in2out_sm_unknown_proto
- (sm, b1, ip1, rx_fib_index1))
- {
- next1 = SNAT_IN2OUT_NEXT_DROP;
- b1->error =
- node->errors[SNAT_IN2OUT_ERROR_UNSUPPORTED_PROTOCOL];
- }
- goto trace01;
+ next1 = SNAT_IN2OUT_NEXT_DROP;
+ b1->error =
+ node->errors[SNAT_IN2OUT_ERROR_UNSUPPORTED_PROTOCOL];
}
+ vlib_increment_simple_counter (is_slow_path ? &sm->
+ counters.slowpath.in2out.
+ other : &sm->counters.fastpath.
+ in2out.other, thread_index,
+ sw_if_index1, 1);
+ goto trace01;
+ }
- if (PREDICT_FALSE (proto1 == SNAT_PROTOCOL_ICMP))
- {
- next1 = icmp_in2out_slow_path
- (sm, b1, ip1, icmp1, sw_if_index1, rx_fib_index1, node,
- next1, now, thread_index, &s1);
- goto trace01;
- }
+ if (PREDICT_FALSE (proto1 == NAT_PROTOCOL_ICMP))
+ {
+ next1 = icmp_in2out_slow_path
+ (sm, b1, ip1, icmp1, sw_if_index1, rx_fib_index1, node,
+ next1, now, thread_index, &s1);
+ vlib_increment_simple_counter (is_slow_path ? &sm->
+ counters.slowpath.in2out.
+ icmp : &sm->counters.fastpath.
+ in2out.icmp, thread_index,
+ sw_if_index1, 1);
+ goto trace01;
}
- else
+ }
+ else
+ {
+ if (PREDICT_FALSE (proto1 == NAT_PROTOCOL_OTHER))
{
- if (PREDICT_FALSE (proto1 == ~0))
- {
- next1 = SNAT_IN2OUT_NEXT_SLOW_PATH;
- goto trace01;
- }
-
- if (ip4_is_fragment (ip1))
- {
- next1 = SNAT_IN2OUT_NEXT_REASS;
- goto trace01;
- }
-
- if (PREDICT_FALSE (proto1 == SNAT_PROTOCOL_ICMP))
- {
- next1 = SNAT_IN2OUT_NEXT_SLOW_PATH;
- goto trace01;
- }
+ next1 = SNAT_IN2OUT_NEXT_SLOW_PATH;
+ goto trace01;
}
- key1.addr = ip1->src_address;
- key1.port = udp1->src_port;
- key1.protocol = proto1;
- key1.fib_index = rx_fib_index1;
-
- kv1.key = key1.as_u64;
+ if (PREDICT_FALSE (proto1 == NAT_PROTOCOL_ICMP))
+ {
+ next1 = SNAT_IN2OUT_NEXT_SLOW_PATH;
+ goto trace01;
+ }
+ }
- if (PREDICT_FALSE
- (clib_bihash_search_8_8
- (&sm->per_thread_data[thread_index].in2out, &kv1,
- &value1) != 0))
+ init_nat_k (&kv1, ip1->src_address,
+ vnet_buffer (b1)->ip.reass.l4_src_port, rx_fib_index1,
+ proto1);
+ if (PREDICT_FALSE
+ (clib_bihash_search_8_8
+ (&sm->per_thread_data[thread_index].in2out, &kv1, &value1) != 0))
+ {
+ if (is_slow_path)
{
- if (is_slow_path)
+ if (is_output_feature)
{
- if (is_output_feature)
- {
- if (PREDICT_FALSE (nat_not_translate_output_feature (sm,
- ip1,
- proto1,
- udp1->src_port,
- udp1->dst_port,
- thread_index,
- sw_if_index1)))
- goto trace01;
- }
- else
- {
- if (PREDICT_FALSE
- (snat_not_translate
- (sm, node, sw_if_index1, ip1, proto1,
- rx_fib_index1, thread_index)))
- goto trace01;
- }
-
- next1 = slow_path (sm, b1, ip1, rx_fib_index1, &key1,
- &s1, node, next1, thread_index, now);
- if (PREDICT_FALSE (next1 == SNAT_IN2OUT_NEXT_DROP))
+ if (PREDICT_FALSE
+ (nat_not_translate_output_feature
+ (sm, ip1, proto1,
+ vnet_buffer (b1)->ip.reass.l4_src_port,
+ vnet_buffer (b1)->ip.reass.l4_dst_port,
+ thread_index, sw_if_index1)))
goto trace01;
- if (PREDICT_FALSE (!s1))
+ /*
+ * Send DHCP packets to the ipv4 stack, or we won't
+ * be able to use dhcp client on the outside interface
+ */
+ if (PREDICT_FALSE
+ (proto1 == NAT_PROTOCOL_UDP
+ && (vnet_buffer (b1)->ip.reass.l4_dst_port ==
+ clib_host_to_net_u16
+ (UDP_DST_PORT_dhcp_to_server))
+ && ip1->dst_address.as_u32 == 0xffffffff))
goto trace01;
}
else
{
- next1 = SNAT_IN2OUT_NEXT_SLOW_PATH;
- goto trace01;
+ if (PREDICT_FALSE
+ (snat_not_translate
+ (sm, node, sw_if_index1, ip1, proto1,
+ rx_fib_index1, thread_index)))
+ goto trace01;
}
+
+ next1 =
+ slow_path (sm, b1, ip1, ip1->src_address,
+ vnet_buffer (b1)->ip.reass.l4_src_port,
+ rx_fib_index1, proto1, &s1, node, next1,
+ thread_index, now);
+ if (PREDICT_FALSE (next1 == SNAT_IN2OUT_NEXT_DROP))
+ goto trace01;
+
+ if (PREDICT_FALSE (!s1))
+ goto trace01;
}
else
- s1 =
- pool_elt_at_index (sm->per_thread_data[thread_index].sessions,
- value1.value);
+ {
+ next1 = SNAT_IN2OUT_NEXT_SLOW_PATH;
+ goto trace01;
+ }
+ }
+ else
+ s1 =
+ pool_elt_at_index (sm->per_thread_data[thread_index].sessions,
+ value1.value);
- b1->flags |= VNET_BUFFER_F_IS_NATED;
+ b1->flags |= VNET_BUFFER_F_IS_NATED;
- old_addr1 = ip1->src_address.as_u32;
- ip1->src_address = s1->out2in.addr;
- new_addr1 = ip1->src_address.as_u32;
- if (!is_output_feature)
- vnet_buffer (b1)->sw_if_index[VLIB_TX] = s1->out2in.fib_index;
+ old_addr1 = ip1->src_address.as_u32;
+ ip1->src_address = s1->out2in.addr;
+ new_addr1 = ip1->src_address.as_u32;
+ if (!is_output_feature)
+ vnet_buffer (b1)->sw_if_index[VLIB_TX] = s1->out2in.fib_index;
- sum1 = ip1->checksum;
- sum1 = ip_csum_update (sum1, old_addr1, new_addr1,
- ip4_header_t,
- src_address /* changed member */ );
- ip1->checksum = ip_csum_fold (sum1);
+ sum1 = ip1->checksum;
+ sum1 = ip_csum_update (sum1, old_addr1, new_addr1,
+ ip4_header_t, src_address /* changed member */ );
+ ip1->checksum = ip_csum_fold (sum1);
- if (PREDICT_TRUE (proto1 == SNAT_PROTOCOL_TCP))
+ if (PREDICT_TRUE (proto1 == NAT_PROTOCOL_TCP))
+ {
+ if (!vnet_buffer (b1)->ip.reass.is_non_first_fragment)
{
- old_port1 = tcp1->src_port;
- tcp1->src_port = s1->out2in.port;
- new_port1 = tcp1->src_port;
-
+ old_port1 = vnet_buffer (b1)->ip.reass.l4_src_port;
+ new_port1 = udp1->src_port = s1->out2in.port;
sum1 = tcp1->checksum;
sum1 = ip_csum_update (sum1, old_addr1, new_addr1,
ip4_header_t,
sum1 = ip_csum_update (sum1, old_port1, new_port1,
ip4_header_t /* cheat */ ,
length /* changed member */ );
- mss_clamping (sm, tcp1, &sum1);
+ mss_clamping (sm->mss_clamping, tcp1, &sum1);
tcp1->checksum = ip_csum_fold (sum1);
}
- else
+ vlib_increment_simple_counter (is_slow_path ? &sm->
+ counters.slowpath.in2out.tcp : &sm->
+ counters.fastpath.in2out.tcp,
+ thread_index, sw_if_index1, 1);
+ }
+ else
+ {
+ if (!vnet_buffer (b1)->ip.reass.is_non_first_fragment)
{
- old_port1 = udp1->src_port;
udp1->src_port = s1->out2in.port;
- udp1->checksum = 0;
- }
-
- /* Accounting */
- nat44_session_update_counters (s1, now,
- vlib_buffer_length_in_chain (vm,
- b1));
- /* Per-user LRU list maintenance */
- nat44_session_update_lru (sm, s1, thread_index);
- trace01:
-
- if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
- && (b1->flags & VLIB_BUFFER_IS_TRACED)))
- {
- snat_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 (s1)
- t->session_index =
- s1 - sm->per_thread_data[thread_index].sessions;
+ if (PREDICT_FALSE (udp1->checksum))
+ {
+ old_port1 = vnet_buffer (b1)->ip.reass.l4_src_port;
+ new_port1 = udp1->src_port;
+ sum1 = udp1->checksum;
+ sum1 = ip_csum_update (sum1, old_addr1, new_addr1, ip4_header_t, dst_address /* changed member */
+ );
+ sum1 =
+ ip_csum_update (sum1, old_port1, new_port1,
+ ip4_header_t /* cheat */ ,
+ length /* changed member */ );
+ udp1->checksum = ip_csum_fold (sum1);
+ }
}
+ vlib_increment_simple_counter (is_slow_path ? &sm->
+ counters.slowpath.in2out.udp : &sm->
+ counters.fastpath.in2out.udp,
+ thread_index, sw_if_index1, 1);
+ }
- pkts_processed += next1 != SNAT_IN2OUT_NEXT_DROP;
+ /* Accounting */
+ nat44_session_update_counters (s1, now,
+ vlib_buffer_length_in_chain (vm, b1),
+ thread_index);
+ /* Per-user LRU list maintenance */
+ nat44_session_update_lru (sm, s1, thread_index);
+ trace01:
- /* verify speculative enqueues, maybe switch current next frame */
- vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
- to_next, n_left_to_next,
- bi0, bi1, next0, next1);
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
+ && (b1->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+ snat_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 (s1)
+ t->session_index =
+ s1 - sm->per_thread_data[thread_index].sessions;
}
- while (n_left_from > 0 && n_left_to_next > 0)
+ if (next1 == SNAT_IN2OUT_NEXT_DROP)
{
- u32 bi0;
- vlib_buffer_t *b0;
- u32 next0;
- u32 sw_if_index0;
- ip4_header_t *ip0;
- ip_csum_t sum0;
- u32 new_addr0, old_addr0;
- u16 old_port0, new_port0;
- udp_header_t *udp0;
- tcp_header_t *tcp0;
- icmp46_header_t *icmp0;
- snat_session_key_t key0;
- u32 rx_fib_index0;
- u32 proto0;
- snat_session_t *s0 = 0;
- clib_bihash_kv_8_8_t kv0, value0;
- u32 iph_offset0 = 0;
+ vlib_increment_simple_counter (is_slow_path ? &sm->
+ counters.slowpath.in2out.
+ drops : &sm->counters.fastpath.
+ in2out.drops, thread_index,
+ sw_if_index1, 1);
+ }
- /* 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;
+ n_left_from -= 2;
+ next[0] = next0;
+ next[1] = next1;
+ next += 2;
+ }
- b0 = vlib_get_buffer (vm, bi0);
- next0 = SNAT_IN2OUT_NEXT_LOOKUP;
+ while (n_left_from > 0)
+ {
+ vlib_buffer_t *b0;
+ u32 next0;
+ u32 sw_if_index0;
+ ip4_header_t *ip0;
+ ip_csum_t sum0;
+ u32 new_addr0, old_addr0;
+ u16 old_port0, new_port0;
+ udp_header_t *udp0;
+ tcp_header_t *tcp0;
+ icmp46_header_t *icmp0;
+ u32 rx_fib_index0;
+ u32 proto0;
+ snat_session_t *s0 = 0;
+ clib_bihash_kv_8_8_t kv0, value0;
+ u32 iph_offset0 = 0;
+
+ b0 = *b;
+ b++;
+ next0 = SNAT_IN2OUT_NEXT_LOOKUP;
+
+ if (is_output_feature)
+ iph_offset0 = vnet_buffer (b0)->ip.reass.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;
+
+ sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+ rx_fib_index0 = vec_elt (sm->ip4_main->fib_index_by_sw_if_index,
+ sw_if_index0);
+
+ if (PREDICT_FALSE (ip0->ttl == 1))
+ {
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
+ icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded,
+ ICMP4_time_exceeded_ttl_exceeded_in_transit,
+ 0);
+ next0 = SNAT_IN2OUT_NEXT_ICMP_ERROR;
+ goto trace0;
+ }
- if (is_output_feature)
- iph_offset0 = vnet_buffer (b0)->ip.save_rewrite_length;
+ proto0 = ip_proto_to_nat_proto (ip0->protocol);
- ip0 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b0) +
- iph_offset0);
+ /* Next configured feature, probably ip4-lookup */
+ if (is_slow_path)
+ {
+ if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_OTHER))
+ {
+ if (nat_in2out_sm_unknown_proto (sm, b0, ip0, rx_fib_index0))
+ {
+ next0 = SNAT_IN2OUT_NEXT_DROP;
+ b0->error =
+ node->errors[SNAT_IN2OUT_ERROR_UNSUPPORTED_PROTOCOL];
+ }
+ vlib_increment_simple_counter (is_slow_path ? &sm->
+ counters.slowpath.in2out.
+ other : &sm->counters.fastpath.
+ in2out.other, thread_index,
+ sw_if_index0, 1);
+ goto trace0;
+ }
- udp0 = ip4_next_header (ip0);
- tcp0 = (tcp_header_t *) udp0;
- icmp0 = (icmp46_header_t *) udp0;
-
- sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
- rx_fib_index0 = vec_elt (sm->ip4_main->fib_index_by_sw_if_index,
- sw_if_index0);
-
- if (PREDICT_FALSE (ip0->ttl == 1))
+ if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
{
- vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
- icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded,
- ICMP4_time_exceeded_ttl_exceeded_in_transit,
- 0);
- next0 = SNAT_IN2OUT_NEXT_ICMP_ERROR;
+ next0 = icmp_in2out_slow_path
+ (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
+ next0, now, thread_index, &s0);
+ vlib_increment_simple_counter (is_slow_path ? &sm->
+ counters.slowpath.in2out.
+ icmp : &sm->counters.fastpath.
+ in2out.icmp, thread_index,
+ sw_if_index0, 1);
goto trace0;
}
-
- proto0 = ip_proto_to_snat_proto (ip0->protocol);
-
- /* Next configured feature, probably ip4-lookup */
- if (is_slow_path)
+ }
+ else
+ {
+ if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_OTHER))
{
- if (PREDICT_FALSE (proto0 == ~0))
- {
- if (nat_in2out_sm_unknown_proto
- (sm, b0, ip0, rx_fib_index0))
- {
- next0 = SNAT_IN2OUT_NEXT_DROP;
- b0->error =
- node->errors[SNAT_IN2OUT_ERROR_UNSUPPORTED_PROTOCOL];
- }
- goto trace0;
- }
-
- if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP))
- {
- next0 = icmp_in2out_slow_path
- (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
- next0, now, thread_index, &s0);
- goto trace0;
- }
+ next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
+ goto trace0;
}
- else
- {
- if (PREDICT_FALSE (proto0 == ~0))
- {
- next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
- goto trace0;
- }
-
- if (ip4_is_fragment (ip0))
- {
- next0 = SNAT_IN2OUT_NEXT_REASS;
- goto trace0;
- }
- if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP))
- {
- next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
- goto trace0;
- }
+ if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
+ {
+ next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
+ goto trace0;
}
+ }
- key0.addr = ip0->src_address;
- key0.port = udp0->src_port;
- key0.protocol = proto0;
- key0.fib_index = rx_fib_index0;
-
- kv0.key = key0.as_u64;
+ init_nat_k (&kv0, ip0->src_address,
+ vnet_buffer (b0)->ip.reass.l4_src_port, rx_fib_index0,
+ proto0);
- if (clib_bihash_search_8_8
- (&sm->per_thread_data[thread_index].in2out, &kv0, &value0))
+ if (clib_bihash_search_8_8
+ (&sm->per_thread_data[thread_index].in2out, &kv0, &value0))
+ {
+ if (is_slow_path)
{
- if (is_slow_path)
+ if (is_output_feature)
{
- if (is_output_feature)
- {
- if (PREDICT_FALSE (nat_not_translate_output_feature (sm,
- ip0,
- proto0,
- udp0->src_port,
- udp0->dst_port,
- thread_index,
- sw_if_index0)))
- goto trace0;
- }
- else
- {
- if (PREDICT_FALSE
- (snat_not_translate
- (sm, node, sw_if_index0, ip0, proto0,
- rx_fib_index0, thread_index)))
- goto trace0;
- }
-
- next0 = slow_path (sm, b0, ip0, rx_fib_index0, &key0,
- &s0, node, next0, thread_index, now);
-
- if (PREDICT_FALSE (next0 == SNAT_IN2OUT_NEXT_DROP))
+ if (PREDICT_FALSE
+ (nat_not_translate_output_feature
+ (sm, ip0, proto0,
+ vnet_buffer (b0)->ip.reass.l4_src_port,
+ vnet_buffer (b0)->ip.reass.l4_dst_port,
+ thread_index, sw_if_index0)))
goto trace0;
- if (PREDICT_FALSE (!s0))
+ /*
+ * Send DHCP packets to the ipv4 stack, or we won't
+ * be able to use dhcp client on the outside interface
+ */
+ if (PREDICT_FALSE
+ (proto0 == NAT_PROTOCOL_UDP
+ && (vnet_buffer (b0)->ip.reass.l4_dst_port ==
+ clib_host_to_net_u16
+ (UDP_DST_PORT_dhcp_to_server))
+ && ip0->dst_address.as_u32 == 0xffffffff))
goto trace0;
}
else
{
- next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
- goto trace0;
+ if (PREDICT_FALSE
+ (snat_not_translate
+ (sm, node, sw_if_index0, ip0, proto0, rx_fib_index0,
+ thread_index)))
+ goto trace0;
}
+
+ next0 =
+ slow_path (sm, b0, ip0, ip0->src_address,
+ vnet_buffer (b0)->ip.reass.l4_src_port,
+ rx_fib_index0, proto0, &s0, node, next0,
+ thread_index, now);
+
+ if (PREDICT_FALSE (next0 == SNAT_IN2OUT_NEXT_DROP))
+ goto trace0;
+
+ if (PREDICT_FALSE (!s0))
+ goto trace0;
}
else
- s0 =
- pool_elt_at_index (sm->per_thread_data[thread_index].sessions,
- value0.value);
+ {
+ next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
+ goto trace0;
+ }
+ }
+ else
+ s0 =
+ pool_elt_at_index (sm->per_thread_data[thread_index].sessions,
+ value0.value);
- b0->flags |= VNET_BUFFER_F_IS_NATED;
+ b0->flags |= VNET_BUFFER_F_IS_NATED;
- 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;
+ 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 */ );
- ip0->checksum = ip_csum_fold (sum0);
+ 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 (PREDICT_TRUE (proto0 == SNAT_PROTOCOL_TCP))
+ if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP))
+ {
+ if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
{
- old_port0 = tcp0->src_port;
- tcp0->src_port = s0->out2in.port;
- new_port0 = tcp0->src_port;
-
+ old_port0 = vnet_buffer (b0)->ip.reass.l4_src_port;
+ 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 /* changed member */ );
- sum0 = ip_csum_update (sum0, old_port0, new_port0,
- ip4_header_t /* cheat */ ,
- length /* changed member */ );
- mss_clamping (sm, tcp0, &sum0);
+ 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 */ );
+ mss_clamping (sm->mss_clamping, tcp0, &sum0);
tcp0->checksum = ip_csum_fold (sum0);
}
- else
+ vlib_increment_simple_counter (is_slow_path ? &sm->
+ counters.slowpath.in2out.tcp : &sm->
+ counters.fastpath.in2out.tcp,
+ thread_index, sw_if_index0, 1);
+ }
+ else
+ {
+ if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
{
- old_port0 = udp0->src_port;
udp0->src_port = s0->out2in.port;
- udp0->checksum = 0;
+ if (PREDICT_FALSE (udp0->checksum))
+ {
+ old_port0 = vnet_buffer (b0)->ip.reass.l4_src_port;
+ new_port0 = udp0->src_port;
+ sum0 = udp0->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 */ );
+ udp0->checksum = ip_csum_fold (sum0);
+ }
}
+ vlib_increment_simple_counter (is_slow_path ? &sm->
+ counters.slowpath.in2out.udp : &sm->
+ counters.fastpath.in2out.udp,
+ thread_index, sw_if_index0, 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)))
- {
- snat_in2out_trace_t *t =
- vlib_add_trace (vm, node, b0, sizeof (*t));
- t->is_slow_path = is_slow_path;
- t->sw_if_index = sw_if_index0;
- t->next_index = next0;
- t->session_index = ~0;
- if (s0)
- t->session_index =
- s0 - sm->per_thread_data[thread_index].sessions;
- }
+ /* Accounting */
+ nat44_session_update_counters (s0, now,
+ vlib_buffer_length_in_chain (vm, b0),
+ thread_index);
+ /* Per-user LRU list maintenance */
+ nat44_session_update_lru (sm, s0, thread_index);
- pkts_processed += next0 != SNAT_IN2OUT_NEXT_DROP;
+ trace0:
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
+ && (b0->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+ snat_in2out_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t));
+ t->is_slow_path = is_slow_path;
+ t->sw_if_index = sw_if_index0;
+ t->next_index = next0;
+ t->session_index = ~0;
+ if (s0)
+ t->session_index =
+ s0 - sm->per_thread_data[thread_index].sessions;
+ }
- /* 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 (next0 == SNAT_IN2OUT_NEXT_DROP)
+ {
+ vlib_increment_simple_counter (is_slow_path ? &sm->
+ counters.slowpath.in2out.
+ drops : &sm->counters.fastpath.
+ in2out.drops, thread_index,
+ sw_if_index0, 1);
}
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ n_left_from--;
+ next[0] = next0;
+ next++;
}
- vlib_node_increment_counter (vm, stats_node_index,
- SNAT_IN2OUT_ERROR_IN2OUT_PACKETS,
- pkts_processed);
+ vlib_buffer_enqueue_to_next (vm, node, from, (u16 *) nexts,
+ frame->n_vectors);
return frame->n_vectors;
}
-static uword
-snat_in2out_fast_path_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * frame)
+VLIB_NODE_FN (snat_in2out_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
{
return snat_in2out_node_fn_inline (vm, node, frame, 0 /* is_slow_path */ ,
0);
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (snat_in2out_node) = {
- .function = snat_in2out_fast_path_fn,
.name = "nat44-in2out",
.vector_size = sizeof (u32),
.format_trace = format_snat_in2out_trace,
[SNAT_IN2OUT_NEXT_LOOKUP] = "ip4-lookup",
[SNAT_IN2OUT_NEXT_SLOW_PATH] = "nat44-in2out-slowpath",
[SNAT_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
- [SNAT_IN2OUT_NEXT_REASS] = "nat44-in2out-reass",
},
};
/* *INDENT-ON* */
-VLIB_NODE_FUNCTION_MULTIARCH (snat_in2out_node, snat_in2out_fast_path_fn);
-
-static uword
-snat_in2out_output_fast_path_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+VLIB_NODE_FN (snat_in2out_output_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
{
return snat_in2out_node_fn_inline (vm, node, frame, 0 /* is_slow_path */ ,
1);
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (snat_in2out_output_node) = {
- .function = snat_in2out_output_fast_path_fn,
.name = "nat44-in2out-output",
.vector_size = sizeof (u32),
.format_trace = format_snat_in2out_trace,
[SNAT_IN2OUT_NEXT_LOOKUP] = "interface-output",
[SNAT_IN2OUT_NEXT_SLOW_PATH] = "nat44-in2out-output-slowpath",
[SNAT_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
- [SNAT_IN2OUT_NEXT_REASS] = "nat44-in2out-reass",
},
};
/* *INDENT-ON* */
-VLIB_NODE_FUNCTION_MULTIARCH (snat_in2out_output_node,
- snat_in2out_output_fast_path_fn);
-
-static uword
-snat_in2out_slow_path_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * frame)
+VLIB_NODE_FN (snat_in2out_slowpath_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
{
return snat_in2out_node_fn_inline (vm, node, frame, 1 /* is_slow_path */ ,
0);
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (snat_in2out_slowpath_node) = {
- .function = snat_in2out_slow_path_fn,
.name = "nat44-in2out-slowpath",
.vector_size = sizeof (u32),
.format_trace = format_snat_in2out_trace,
[SNAT_IN2OUT_NEXT_LOOKUP] = "ip4-lookup",
[SNAT_IN2OUT_NEXT_SLOW_PATH] = "nat44-in2out-slowpath",
[SNAT_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
- [SNAT_IN2OUT_NEXT_REASS] = "nat44-in2out-reass",
},
};
/* *INDENT-ON* */
-VLIB_NODE_FUNCTION_MULTIARCH (snat_in2out_slowpath_node,
- snat_in2out_slow_path_fn);
-
-static uword
-snat_in2out_output_slow_path_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+VLIB_NODE_FN (snat_in2out_output_slowpath_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
{
return snat_in2out_node_fn_inline (vm, node, frame, 1 /* is_slow_path */ ,
1);
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (snat_in2out_output_slowpath_node) = {
- .function = snat_in2out_output_slow_path_fn,
.name = "nat44-in2out-output-slowpath",
.vector_size = sizeof (u32),
.format_trace = format_snat_in2out_trace,
[SNAT_IN2OUT_NEXT_LOOKUP] = "interface-output",
[SNAT_IN2OUT_NEXT_SLOW_PATH] = "nat44-in2out-output-slowpath",
[SNAT_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
- [SNAT_IN2OUT_NEXT_REASS] = "nat44-in2out-reass",
- },
-};
-/* *INDENT-ON* */
-
-VLIB_NODE_FUNCTION_MULTIARCH (snat_in2out_output_slowpath_node,
- snat_in2out_output_slow_path_fn);
-
-static uword
-nat44_in2out_reass_node_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * frame)
-{
- u32 n_left_from, *from, *to_next;
- snat_in2out_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;
- vlib_buffer_t *b0;
- u32 next0;
- u8 cached0 = 0;
- ip4_header_t *ip0;
- nat_reass_ip4_t *reass0;
- udp_header_t *udp0;
- tcp_header_t *tcp0;
- icmp46_header_t *icmp0;
- snat_session_key_t key0;
- clib_bihash_kv_8_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 = SNAT_IN2OUT_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 = SNAT_IN2OUT_NEXT_DROP;
- b0->error = node->errors[SNAT_IN2OUT_ERROR_DROP_FRAGMENT];
- goto trace0;
- }
-
- 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,
- ip0->dst_address,
- ip0->fragment_id,
- ip0->protocol,
- 1, &fragments_to_drop);
-
- if (PREDICT_FALSE (!reass0))
- {
- next0 = SNAT_IN2OUT_NEXT_DROP;
- b0->error = node->errors[SNAT_IN2OUT_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))
- {
- next0 = icmp_in2out_slow_path
- (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
- next0, now, thread_index, &s0);
-
- if (PREDICT_TRUE (next0 != SNAT_IN2OUT_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;
- }
-
- key0.addr = ip0->src_address;
- key0.port = udp0->src_port;
- key0.protocol = proto0;
- key0.fib_index = rx_fib_index0;
- kv0.key = key0.as_u64;
-
- if (clib_bihash_search_8_8
- (&per_thread_data->in2out, &kv0, &value0))
- {
- if (PREDICT_FALSE
- (snat_not_translate
- (sm, node, sw_if_index0, ip0, proto0, rx_fib_index0,
- thread_index)))
- goto trace0;
-
- next0 = slow_path (sm, b0, ip0, rx_fib_index0, &key0,
- &s0, node, next0, thread_index, now);
-
- if (PREDICT_FALSE (next0 == SNAT_IN2OUT_NEXT_DROP))
- goto trace0;
-
- if (PREDICT_FALSE (!s0))
- 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 (PREDICT_FALSE (reass0->sess_index == (u32) ~ 0))
- {
- if (nat_ip4_reass_add_fragment
- (reass0, bi0, &fragments_to_drop))
- {
- b0->error = node->errors[SNAT_IN2OUT_ERROR_MAX_FRAG];
- nat_log_notice
- ("maximum fragments per reassembly exceeded");
- next0 = SNAT_IN2OUT_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;
- 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 */ );
- 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 */ );
- tcp0->checksum = ip_csum_fold (sum0);
- }
- else
- {
- old_port0 = udp0->src_port;
- udp0->src_port = s0->out2in.port;
- udp0->checksum = 0;
- }
- }
-
- /* Hairpinning */
- nat44_reass_hairpinning (sm, b0, ip0, s0->out2in.port,
- s0->ext_host_port, proto0, 0);
-
- /* 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 != SNAT_IN2OUT_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_in2out_reass_node.index,
- SNAT_IN2OUT_ERROR_IN2OUT_PACKETS,
- pkts_processed);
-
- nat_send_all_to_node (vm, fragments_to_drop, node,
- &node->errors[SNAT_IN2OUT_ERROR_DROP_FRAGMENT],
- SNAT_IN2OUT_NEXT_DROP);
-
- vec_free (fragments_to_drop);
- vec_free (fragments_to_loopback);
- return frame->n_vectors;
-}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (nat44_in2out_reass_node) = {
- .function = nat44_in2out_reass_node_fn,
- .name = "nat44-in2out-reass",
- .vector_size = sizeof (u32),
- .format_trace = format_nat44_reass_trace,
- .type = VLIB_NODE_TYPE_INTERNAL,
-
- .n_errors = ARRAY_LEN(snat_in2out_error_strings),
- .error_strings = snat_in2out_error_strings,
-
- .n_next_nodes = SNAT_IN2OUT_N_NEXT,
- .next_nodes = {
- [SNAT_IN2OUT_NEXT_DROP] = "error-drop",
- [SNAT_IN2OUT_NEXT_LOOKUP] = "ip4-lookup",
- [SNAT_IN2OUT_NEXT_SLOW_PATH] = "nat44-in2out-slowpath",
- [SNAT_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
- [SNAT_IN2OUT_NEXT_REASS] = "nat44-in2out-reass",
},
};
/* *INDENT-ON* */
-VLIB_NODE_FUNCTION_MULTIARCH (nat44_in2out_reass_node,
- nat44_in2out_reass_node_fn);
-
-static uword
-snat_in2out_fast_static_map_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+VLIB_NODE_FN (snat_in2out_fast_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
{
u32 n_left_from, *from, *to_next;
snat_in2out_next_t next_index;
- u32 pkts_processed = 0;
snat_main_t *sm = &snat_main;
- u32 stats_node_index;
-
- stats_node_index = snat_in2out_fast_node.index;
+ int is_hairpinning = 0;
from = vlib_frame_vector_args (frame);
n_left_from = frame->n_vectors;
udp_header_t *udp0;
tcp_header_t *tcp0;
icmp46_header_t *icmp0;
- snat_session_key_t key0, sm0;
u32 proto0;
u32 rx_fib_index0;
+ ip4_address_t sm0_addr;
+ u16 sm0_port;
+ u32 sm0_fib_index;
+
/* speculatively enqueue b0 to the current next frame */
bi0 = from[0];
goto trace0;
}
- proto0 = ip_proto_to_snat_proto (ip0->protocol);
+ proto0 = ip_proto_to_nat_proto (ip0->protocol);
- if (PREDICT_FALSE (proto0 == ~0))
+ if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_OTHER))
goto trace0;
- if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP))
+ if (PREDICT_FALSE (proto0 == NAT_PROTOCOL_ICMP))
{
next0 = icmp_in2out (sm, b0, ip0, icmp0, sw_if_index0,
rx_fib_index0, node, next0, ~0, 0, 0);
goto trace0;
}
- key0.addr = ip0->src_address;
- key0.protocol = proto0;
- key0.port = udp0->src_port;
- key0.fib_index = rx_fib_index0;
-
- if (snat_static_mapping_match (sm, key0, &sm0, 0, 0, 0, 0, 0, 0))
+ if (snat_static_mapping_match
+ (sm, ip0->src_address, udp0->src_port, rx_fib_index0, proto0,
+ &sm0_addr, &sm0_port, &sm0_fib_index, 0, 0, 0, 0, 0, 0, 0))
{
b0->error = node->errors[SNAT_IN2OUT_ERROR_NO_TRANSLATION];
next0 = SNAT_IN2OUT_NEXT_DROP;
goto trace0;
}
- new_addr0 = sm0.addr.as_u32;
- new_port0 = sm0.port;
- vnet_buffer (b0)->sw_if_index[VLIB_TX] = sm0.fib_index;
+ new_addr0 = sm0_addr.as_u32;
+ new_port0 = sm0_port;
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = sm0_fib_index;
old_addr0 = ip0->src_address.as_u32;
ip0->src_address.as_u32 = new_addr0;
if (PREDICT_FALSE (new_port0 != udp0->dst_port))
{
- if (PREDICT_TRUE (proto0 == SNAT_PROTOCOL_TCP))
- {
- old_port0 = tcp0->src_port;
- tcp0->src_port = new_port0;
+ old_port0 = udp0->src_port;
+ udp0->src_port = new_port0;
+ if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP))
+ {
sum0 = tcp0->checksum;
sum0 = ip_csum_update (sum0, old_addr0, new_addr0,
ip4_header_t,
sum0 = ip_csum_update (sum0, old_port0, new_port0,
ip4_header_t /* cheat */ ,
length /* changed member */ );
- mss_clamping (sm, tcp0, &sum0);
+ mss_clamping (sm->mss_clamping, tcp0, &sum0);
tcp0->checksum = ip_csum_fold (sum0);
}
- else
+ else if (udp0->checksum)
{
- old_port0 = udp0->src_port;
- udp0->src_port = new_port0;
- udp0->checksum = 0;
+ sum0 = udp0->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 */ );
+ udp0->checksum = ip_csum_fold (sum0);
}
}
else
{
- if (PREDICT_TRUE (proto0 == SNAT_PROTOCOL_TCP))
+ if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP))
{
sum0 = tcp0->checksum;
sum0 = ip_csum_update (sum0, old_addr0, new_addr0,
ip4_header_t,
dst_address /* changed member */ );
- mss_clamping (sm, tcp0, &sum0);
+ mss_clamping (sm->mss_clamping, tcp0, &sum0);
tcp0->checksum = ip_csum_fold (sum0);
}
+ else if (udp0->checksum)
+ {
+ sum0 = udp0->checksum;
+ sum0 = ip_csum_update (sum0, old_addr0, new_addr0,
+ ip4_header_t,
+ dst_address /* changed member */ );
+ udp0->checksum = ip_csum_fold (sum0);
+ }
}
/* Hairpinning */
- snat_hairpinning (sm, b0, ip0, udp0, tcp0, proto0, 0);
+ is_hairpinning =
+ snat_hairpinning (vm, node, sm, b0, ip0, udp0, tcp0, proto0, 0,
+ 0 /* do_trace */ );
trace0:
if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
vlib_add_trace (vm, node, b0, sizeof (*t));
t->sw_if_index = sw_if_index0;
t->next_index = next0;
+ t->is_hairpinning = is_hairpinning;
}
- pkts_processed += next0 != SNAT_IN2OUT_NEXT_DROP;
+ if (next0 != SNAT_IN2OUT_NEXT_DROP)
+ {
+
+ vlib_increment_simple_counter (&sm->counters.fastpath.
+ in2out.other, sw_if_index0,
+ vm->thread_index, 1);
+ }
/* 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, stats_node_index,
- SNAT_IN2OUT_ERROR_IN2OUT_PACKETS,
- pkts_processed);
return frame->n_vectors;
}
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (snat_in2out_fast_node) = {
- .function = snat_in2out_fast_static_map_fn,
.name = "nat44-in2out-fast",
.vector_size = sizeof (u32),
.format_trace = format_snat_in2out_fast_trace,
[SNAT_IN2OUT_NEXT_LOOKUP] = "ip4-lookup",
[SNAT_IN2OUT_NEXT_SLOW_PATH] = "nat44-in2out-slowpath",
[SNAT_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
- [SNAT_IN2OUT_NEXT_REASS] = "nat44-in2out-reass",
},
};
/* *INDENT-ON* */
-VLIB_NODE_FUNCTION_MULTIARCH (snat_in2out_fast_node,
- snat_in2out_fast_static_map_fn);
-
/*
* fd.io coding-style-patch-verification: ON
*
Code Review / vpp.git / blobdiff