#include <vnet/ip/ip.h>
#include <vnet/ethernet/ethernet.h>
#include <vnet/fib/ip4_fib.h>
+#include <vnet/udp/udp.h>
#include <nat/nat.h>
#include <nat/nat_ipfix_logging.h>
-#include <nat/nat_reass.h>
#include <nat/nat_inlines.h>
+#include <nat/nat44_inlines.h>
+#include <nat/nat_syslog.h>
+#include <nat/nat_ha.h>
#include <vppinfra/hash.h>
#include <vppinfra/error.h>
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") \
+_(IN2OUT_PACKETS, "good in2out packets processed") \
+_(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") \
+_(DROP_FRAGMENT, "drop fragment") \
+_(TCP_PACKETS, "TCP packets") \
+_(UDP_PACKETS, "UDP packets") \
+_(ICMP_PACKETS, "ICMP packets") \
+_(OTHER_PACKETS, "other protocol packets") \
+_(FRAGMENTS, "fragments") \
+_(CACHED_FRAGMENTS, "cached fragments") \
+_(PROCESSED_FRAGMENTS, "processed fragments")
typedef enum
{
SNAT_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;
return 0;
}
+#ifndef CLIB_MARCH_VARIANT
int
nat44_i2o_is_idle_session_cb (clib_bihash_kv_8_8_t * kv, void *arg)
{
{
s_kv.key = s->out2in.as_u64;
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,
+ snat_ipfix_logging_nat44_ses_delete (ctx->thread_index,
+ s->in2out.addr.as_u32,
s->out2in.addr.as_u32,
s->in2out.protocol,
s->in2out.port,
s->out2in.port,
s->in2out.fib_index);
+ nat_syslog_nat44_apmdel (s->user_index, s->in2out.fib_index,
+ &s->in2out.addr, s->in2out.port,
+ &s->out2in.addr, s->out2in.port,
+ s->in2out.protocol);
+
+ nat_ha_sdel (&s->out2in.addr, s->out2in.port, &s->ext_host_addr,
+ s->ext_host_port, s->out2in.protocol, s->out2in.fib_index,
+ ctx->thread_index);
+
if (!snat_is_session_static (s))
snat_free_outside_address_and_port (sm->addresses, ctx->thread_index,
&s->out2in);
return 0;
}
+#endif
static u32
slow_path (snat_main_t * sm, vlib_buffer_t * b0,
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;
+ nat44_session_try_cleanup (&ip0->src_address, rx_fib_index0, thread_index,
+ now);
+
if (PREDICT_FALSE (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);
+ nat_elog_notice ("maximum sessions exceeded");
return SNAT_IN2OUT_NEXT_DROP;
}
thread_index);
if (!u)
{
- nat_log_warn ("create NAT user failed");
+ nat_elog_warn ("create NAT user failed");
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;
}
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 */
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");
+ nat_elog_notice ("in2out key add failed");
kv0.key = s->out2in.as_u64;
kv0.value = 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,
+ snat_ipfix_logging_nat44_ses_create (thread_index,
+ s->in2out.addr.as_u32,
s->out2in.addr.as_u32,
s->in2out.protocol,
s->in2out.port,
s->out2in.port, s->in2out.fib_index);
+
+ nat_syslog_nat44_apmadd (s->user_index, s->in2out.fib_index,
+ &s->in2out.addr, s->in2out.port, &s->out2in.addr,
+ s->out2in.port, s->in2out.protocol);
+
+ nat_ha_sadd (&s->in2out.addr, s->in2out.port, &s->out2in.addr,
+ s->out2in.port, &s->ext_host_addr, s->ext_host_port,
+ &s->ext_host_nat_addr, s->ext_host_nat_port,
+ s->in2out.protocol, s->in2out.fib_index, s->flags,
+ thread_index, 0);
+
return next0;
}
+#ifndef CLIB_MARCH_VARIANT
static_always_inline
- snat_in2out_error_t icmp_get_key (ip4_header_t * ip0,
+ snat_in2out_error_t icmp_get_key (vlib_buffer_t * b, ip4_header_t * ip0,
snat_session_key_t * p_key0)
{
icmp46_header_t *icmp0;
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;
+ key0.port = vnet_buffer (b)->ip.reass.l4_src_port; // TODO fixme should this be dst port?
}
else
{
snat_session_key_t * p_value,
u8 * p_dont_translate, void *d, void *e)
{
- icmp46_header_t *icmp0;
u32 sw_if_index0;
u32 rx_fib_index0;
snat_session_key_t key0;
u32 next0 = ~0;
int err;
- 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);
- err = icmp_get_key (ip0, &key0);
+ err = icmp_get_key (b0, ip0, &key0);
if (err != -1)
{
b0->error = node->errors[err];
}
}
- 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;
}
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;
*(snat_session_t **) d = s0;
return next0;
}
+#endif
+#ifndef CLIB_MARCH_VARIANT
/**
* Get address and port values to be used for ICMP packet translation
*
snat_session_key_t * p_value,
u8 * p_dont_translate, void *d, void *e)
{
- icmp46_header_t *icmp0;
u32 sw_if_index0;
u32 rx_fib_index0;
snat_session_key_t key0;
u32 next0 = ~0;
int err;
- 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);
- err = icmp_get_key (ip0, &key0);
+ err = icmp_get_key (b0, ip0, &key0);
if (err != -1)
{
b0->error = node->errors[err];
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;
*p_dont_translate = dont_translate;
return next0;
}
+#endif
+#ifndef CLIB_MARCH_VARIANT
u32
icmp_in2out (snat_main_t * sm,
vlib_buffer_t * b0,
src_address /* changed member */ );
ip0->checksum = ip_csum_fold (sum0);
- if (icmp0->checksum == 0)
- icmp0->checksum = 0xffff;
-
- if (!icmp_is_error_message (icmp0))
+ if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
{
- new_id0 = sm0.port;
- if (PREDICT_FALSE (new_id0 != echo0->identifier))
- {
- old_id0 = echo0->identifier;
- new_id0 = sm0.port;
- echo0->identifier = new_id0;
+ if (icmp0->checksum == 0)
+ icmp0->checksum = 0xffff;
- 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))
+ if (!icmp_type_is_error_message (icmp0->type))
{
- next0 = SNAT_IN2OUT_NEXT_DROP;
- goto out;
+ 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);
+ }
}
-
- /* 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 = sm0.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 SNAT_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 = sm0.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 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;
+
+ 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);
+ }
}
}
out:
return next0;
}
+#endif
static inline u32
icmp_in2out_slow_path (snat_main_t * sm,
/* Accounting */
nat44_session_update_counters (s0, now,
vlib_buffer_length_in_chain
- (sm->vlib_main, b0));
+ (sm->vlib_main, b0), thread_index);
/* Per-user LRU list maintenance */
nat44_session_update_lru (sm, s0, thread_index);
}
f64 now = vlib_time_now (vm);
u32 stats_node_index;
u32 thread_index = vm->thread_index;
+ u32 tcp_packets = 0, udp_packets = 0, icmp_packets = 0, other_packets =
+ 0, fragments = 0;
- stats_node_index = is_slow_path ? snat_in2out_slowpath_node.index :
- snat_in2out_node.index;
+ stats_node_index = is_slow_path ? sm->in2out_slowpath_node_index :
+ sm->in2out_node_index;
from = vlib_frame_vector_args (frame);
n_left_from = frame->n_vectors;
b1 = vlib_get_buffer (vm, bi1);
if (is_output_feature)
- iph_offset0 = vnet_buffer (b0)->ip.save_rewrite_length;
+ iph_offset0 = vnet_buffer (b0)->ip.reass.save_rewrite_length;
ip0 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b0) +
iph_offset0);
b0->error =
node->errors[SNAT_IN2OUT_ERROR_UNSUPPORTED_PROTOCOL];
}
+ other_packets++;
goto trace00;
}
next0 = icmp_in2out_slow_path
(sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0,
node, next0, now, thread_index, &s0);
+ icmp_packets++;
goto trace00;
}
}
else
{
- if (PREDICT_FALSE
- (proto0 == ~0 || proto0 == SNAT_PROTOCOL_ICMP))
+ if (PREDICT_FALSE (proto0 == ~0))
{
next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
goto trace00;
}
- if (ip4_is_fragment (ip0))
+ if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP))
{
- next0 = SNAT_IN2OUT_NEXT_REASS;
+ next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
goto trace00;
}
}
key0.addr = ip0->src_address;
- key0.port = udp0->src_port;
+ key0.port = vnet_buffer (b0)->ip.reass.l4_src_port;
key0.protocol = proto0;
key0.fib_index = rx_fib_index0;
{
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)))
+ 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;
+
+ /*
+ * Send DHCP packets to the ipv4 stack, or we won't
+ * be able to use dhcp client on the outside interface
+ */
+ if (PREDICT_FALSE
+ ((b0->flags & VNET_BUFFER_F_LOCALLY_ORIGINATED)
+ && proto0 == SNAT_PROTOCOL_UDP
+ && (vnet_buffer (b0)->ip.reass.l4_dst_port ==
+ clib_host_to_net_u16
+ (UDP_DST_PORT_dhcp_to_server))))
goto trace00;
}
else
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;
-
- 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);
- tcp0->checksum = ip_csum_fold (sum0);
+ 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,
+ 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);
+ tcp0->checksum = ip_csum_fold (sum0);
+ }
+ tcp_packets++;
}
else
{
- old_port0 = udp0->src_port;
- udp0->src_port = s0->out2in.port;
- udp0->checksum = 0;
+ if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
+ {
+ if (PREDICT_FALSE (udp0->checksum))
+ {
+ old_port0 = vnet_buffer (b0)->ip.reass.l4_src_port;
+ new_port0 = udp0->src_port = s0->out2in.port;
+ sum0 = udp0->checksum;
+ sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t, dst_address /* changed member */
+ );
+ sum0 =
+ ip_csum_update (sum0, old_port0, new_port0,
+ ip4_header_t /* cheat */ ,
+ length /* changed member */ );
+ udp0->checksum = ip_csum_fold (sum0);
+ }
+ }
+ udp_packets++;
}
/* Accounting */
nat44_session_update_counters (s0, now,
- vlib_buffer_length_in_chain (vm,
- b0));
+ vlib_buffer_length_in_chain (vm, b0),
+ thread_index);
/* Per-user LRU list maintenance */
nat44_session_update_lru (sm, s0, thread_index);
trace00:
s0 - sm->per_thread_data[thread_index].sessions;
}
- pkts_processed += next0 != SNAT_IN2OUT_NEXT_DROP;
+ pkts_processed += next0 == SNAT_IN2OUT_NEXT_LOOKUP;
if (is_output_feature)
- iph_offset1 = vnet_buffer (b1)->ip.save_rewrite_length;
+ iph_offset1 = vnet_buffer (b1)->ip.reass.save_rewrite_length;
ip1 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b1) +
iph_offset1);
b1->error =
node->errors[SNAT_IN2OUT_ERROR_UNSUPPORTED_PROTOCOL];
}
+ other_packets++;
goto trace01;
}
next1 = icmp_in2out_slow_path
(sm, b1, ip1, icmp1, sw_if_index1, rx_fib_index1, node,
next1, now, thread_index, &s1);
+ icmp_packets++;
goto trace01;
}
}
else
{
- if (PREDICT_FALSE
- (proto1 == ~0 || proto1 == SNAT_PROTOCOL_ICMP))
+ if (PREDICT_FALSE (proto1 == ~0))
{
next1 = SNAT_IN2OUT_NEXT_SLOW_PATH;
goto trace01;
}
- if (ip4_is_fragment (ip1))
+ if (PREDICT_FALSE (proto1 == SNAT_PROTOCOL_ICMP))
{
- next1 = SNAT_IN2OUT_NEXT_REASS;
+ next1 = SNAT_IN2OUT_NEXT_SLOW_PATH;
goto trace01;
}
}
key1.addr = ip1->src_address;
- key1.port = udp1->src_port;
+ key1.port = vnet_buffer (b1)->ip.reass.l4_src_port;
key1.protocol = proto1;
key1.fib_index = rx_fib_index1;
{
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)))
+ 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;
+
+ /*
+ * Send DHCP packets to the ipv4 stack, or we won't
+ * be able to use dhcp client on the outside interface
+ */
+ if (PREDICT_FALSE
+ ((b1->flags & VNET_BUFFER_F_LOCALLY_ORIGINATED)
+ && proto1 == SNAT_PROTOCOL_UDP
+ && (vnet_buffer (b1)->ip.reass.l4_dst_port ==
+ clib_host_to_net_u16
+ (UDP_DST_PORT_dhcp_to_server))))
goto trace01;
}
else
if (PREDICT_TRUE (proto1 == SNAT_PROTOCOL_TCP))
{
- old_port1 = tcp1->src_port;
- tcp1->src_port = s1->out2in.port;
- new_port1 = tcp1->src_port;
-
- sum1 = tcp1->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 */ );
- mss_clamping (sm, tcp1, &sum1);
- tcp1->checksum = ip_csum_fold (sum1);
+ if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
+ {
+ 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,
+ dst_address /* changed member */ );
+ sum1 = ip_csum_update (sum1, old_port1, new_port1,
+ ip4_header_t /* cheat */ ,
+ length /* changed member */ );
+ mss_clamping (sm, tcp1, &sum1);
+ tcp1->checksum = ip_csum_fold (sum1);
+ }
+ tcp_packets++;
}
else
{
- old_port1 = udp1->src_port;
- udp1->src_port = s1->out2in.port;
- udp1->checksum = 0;
+ if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
+ {
+ if (PREDICT_FALSE (udp1->checksum))
+ {
+ old_port1 = vnet_buffer (b1)->ip.reass.l4_src_port;
+ new_port1 = udp1->src_port = s1->out2in.port;
+ sum1 = udp1->checksum;
+ sum1 = ip_csum_update (sum1, old_addr1, new_addr1, ip4_header_t, dst_address /* changed member */
+ );
+ sum1 =
+ ip_csum_update (sum1, old_port1, new_port1,
+ ip4_header_t /* cheat */ ,
+ length /* changed member */ );
+ udp1->checksum = ip_csum_fold (sum1);
+ }
+ }
+ udp_packets++;
}
/* Accounting */
nat44_session_update_counters (s1, now,
- vlib_buffer_length_in_chain (vm,
- b1));
+ vlib_buffer_length_in_chain (vm, b1),
+ thread_index);
/* Per-user LRU list maintenance */
nat44_session_update_lru (sm, s1, thread_index);
trace01:
s1 - sm->per_thread_data[thread_index].sessions;
}
- pkts_processed += next1 != SNAT_IN2OUT_NEXT_DROP;
+ pkts_processed += next1 == SNAT_IN2OUT_NEXT_LOOKUP;
/* verify speculative enqueues, maybe switch current next frame */
vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
next0 = SNAT_IN2OUT_NEXT_LOOKUP;
if (is_output_feature)
- iph_offset0 = vnet_buffer (b0)->ip.save_rewrite_length;
+ iph_offset0 = vnet_buffer (b0)->ip.reass.save_rewrite_length;
ip0 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b0) +
iph_offset0);
b0->error =
node->errors[SNAT_IN2OUT_ERROR_UNSUPPORTED_PROTOCOL];
}
+ other_packets++;
goto trace0;
}
next0 = icmp_in2out_slow_path
(sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
next0, now, thread_index, &s0);
+ icmp_packets++;
goto trace0;
}
}
else
{
- if (PREDICT_FALSE
- (proto0 == ~0 || proto0 == SNAT_PROTOCOL_ICMP))
+ if (PREDICT_FALSE (proto0 == ~0))
{
next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
goto trace0;
}
- if (ip4_is_fragment (ip0))
+ if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP))
{
- next0 = SNAT_IN2OUT_NEXT_REASS;
+ next0 = SNAT_IN2OUT_NEXT_SLOW_PATH;
goto trace0;
}
}
key0.addr = ip0->src_address;
- key0.port = udp0->src_port;
+ key0.port = vnet_buffer (b0)->ip.reass.l4_src_port;
key0.protocol = proto0;
key0.fib_index = rx_fib_index0;
{
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)))
+ 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;
+
+ /*
+ * Send DHCP packets to the ipv4 stack, or we won't
+ * be able to use dhcp client on the outside interface
+ */
+ if (PREDICT_FALSE
+ ((b0->flags & VNET_BUFFER_F_LOCALLY_ORIGINATED)
+ && proto0 == SNAT_PROTOCOL_UDP
+ && (vnet_buffer (b0)->ip.reass.l4_dst_port ==
+ clib_host_to_net_u16
+ (UDP_DST_PORT_dhcp_to_server))))
goto trace0;
}
else
if (PREDICT_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 */ );
- mss_clamping (sm, tcp0, &sum0);
- tcp0->checksum = ip_csum_fold (sum0);
+ 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,
+ 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);
+ tcp0->checksum = ip_csum_fold (sum0);
+ }
+ tcp_packets++;
}
else
{
- old_port0 = udp0->src_port;
- udp0->src_port = s0->out2in.port;
- udp0->checksum = 0;
+ if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
+ {
+ if (PREDICT_FALSE (udp0->checksum))
+ {
+ old_port0 = vnet_buffer (b0)->ip.reass.l4_src_port;
+ new_port0 = udp0->src_port = s0->out2in.port;
+ sum0 = udp0->checksum;
+ sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t, dst_address /* changed member */
+ );
+ sum0 =
+ ip_csum_update (sum0, old_port0, new_port0,
+ ip4_header_t /* cheat */ ,
+ length /* changed member */ );
+ udp0->checksum = ip_csum_fold (sum0);
+ }
+ }
+ udp_packets++;
}
/* Accounting */
nat44_session_update_counters (s0, now,
- vlib_buffer_length_in_chain (vm,
- b0));
+ vlib_buffer_length_in_chain (vm, b0),
+ thread_index);
/* Per-user LRU list maintenance */
nat44_session_update_lru (sm, s0, thread_index);
s0 - sm->per_thread_data[thread_index].sessions;
}
- pkts_processed += next0 != SNAT_IN2OUT_NEXT_DROP;
+ pkts_processed += next0 == SNAT_IN2OUT_NEXT_LOOKUP;
/* verify speculative enqueue, maybe switch current next frame */
vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
vlib_node_increment_counter (vm, stats_node_index,
SNAT_IN2OUT_ERROR_IN2OUT_PACKETS,
pkts_processed);
+ vlib_node_increment_counter (vm, stats_node_index,
+ SNAT_IN2OUT_ERROR_TCP_PACKETS, tcp_packets);
+ vlib_node_increment_counter (vm, stats_node_index,
+ SNAT_IN2OUT_ERROR_UDP_PACKETS, udp_packets);
+ vlib_node_increment_counter (vm, stats_node_index,
+ SNAT_IN2OUT_ERROR_ICMP_PACKETS, icmp_packets);
+ vlib_node_increment_counter (vm, stats_node_index,
+ SNAT_IN2OUT_ERROR_OTHER_PACKETS,
+ other_packets);
+ vlib_node_increment_counter (vm, stats_node_index,
+ SNAT_IN2OUT_ERROR_FRAGMENTS, fragments);
+
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;
- 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;
- 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)))
- {
- 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 (from, fragments_to_loopback,
- sizeof (u32) * len);
- n_left_from = len;
- vec_reset_length (fragments_to_loopback);
- }
- else
- {
- clib_memcpy (from,
- fragments_to_loopback + (len -
- VLIB_FRAME_SIZE),
- sizeof (u32) * VLIB_FRAME_SIZE);
- 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;
snat_main_t *sm = &snat_main;
u32 stats_node_index;
- stats_node_index = snat_in2out_fast_node.index;
+ stats_node_index = sm->in2out_fast_node_index;
from = vlib_frame_vector_args (frame);
n_left_from = frame->n_vectors;
if (PREDICT_FALSE (new_port0 != udp0->dst_port))
{
+ old_port0 = udp0->src_port;
+ udp0->src_port = new_port0;
+
if (PREDICT_TRUE (proto0 == SNAT_PROTOCOL_TCP))
{
- old_port0 = tcp0->src_port;
- tcp0->src_port = new_port0;
-
sum0 = tcp0->checksum;
sum0 = ip_csum_update (sum0, old_addr0, new_addr0,
ip4_header_t,
mss_clamping (sm, 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
mss_clamping (sm, 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 */
/* *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