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/*
* Copyright (c) 2018 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <nat/nat44-ed/nat44_ed.h>
#include <nat/nat44-ed/nat44_ed_inlines.h>
u8 *
format_ed_session_kvp (u8 *s, va_list *args)
{
clib_bihash_kv_16_8_t *v = va_arg (*args, clib_bihash_kv_16_8_t *);
u8 proto;
u16 r_port, l_port;
ip4_address_t l_addr, r_addr;
u32 fib_index;
split_ed_kv (v, &l_addr, &r_addr, &proto, &fib_index, &l_port, &r_port);
s = format (s,
"local %U:%d remote %U:%d proto %U fib %d thread-index %u "
"session-index %u",
format_ip4_address, &l_addr, clib_net_to_host_u16 (l_port),
format_ip4_address, &r_addr, clib_net_to_host_u16 (r_port),
format_ip_protocol, proto, fib_index,
ed_value_get_thread_index (v), ed_value_get_session_index (v));
return s;
}
u8 *
format_snat_session (u8 * s, va_list * args)
{
snat_main_t *sm = va_arg (*args, snat_main_t *);
snat_main_per_thread_data_t *tsm =
va_arg (*args, snat_main_per_thread_data_t *);
snat_session_t *sess = va_arg (*args, snat_session_t *);
f64 now = va_arg (*args, f64);
if (nat44_ed_is_unk_proto (sess->proto))
{
s = format (s, " i2o %U proto %u fib %u\n",
format_ip4_address, &sess->in2out.addr,
sess->in2out.port, sess->in2out.fib_index);
s =
format (s, " o2i %U proto %u fib %u\n", format_ip4_address,
&sess->out2in.addr, sess->out2in.port, sess->out2in.fib_index);
}
else
{
s = format (s, " i2o %U proto %U port %d fib %d\n", format_ip4_address,
&sess->in2out.addr, format_ip_protocol, sess->proto,
clib_net_to_host_u16 (sess->in2out.port),
sess->in2out.fib_index);
s = format (s, " o2i %U proto %U port %d fib %d\n",
format_ip4_address, &sess->out2in.addr, format_ip_protocol,
sess->proto, clib_net_to_host_u16 (sess->out2in.port),
sess->out2in.fib_index);
}
if (nat44_ed_is_twice_nat_session (sess))
{
s = format (s, " external host o2i %U:%d i2o %U:%d\n",
format_ip4_address, &sess->ext_host_addr,
clib_net_to_host_u16 (sess->ext_host_port),
format_ip4_address, &sess->ext_host_nat_addr,
clib_net_to_host_u16 (sess->ext_host_nat_port));
}
else
{
if (sess->ext_host_addr.as_u32)
s = format (s, " external host %U:%u\n",
format_ip4_address, &sess->ext_host_addr,
clib_net_to_host_u16 (sess->ext_host_port));
}
s = format (s, " i2o flow: %U\n", format_nat_6t_flow, &sess->i2o);
s = format (s, " o2i flow: %U\n", format_nat_6t_flow, &sess->o2i);
s = format (s, " index %llu\n", sess - tsm->sessions);
s = format (s, " last heard %.2f\n", sess->last_heard);
s = format (s, " timeout in %.2f\n",
nat44_session_get_timeout (sm, sess) - (now - sess->last_heard));
s = format (s, " total pkts %d, total bytes %lld\n", sess->total_pkts,
sess->total_bytes);
if (nat44_ed_is_session_static (sess))
s = format (s, " static translation\n");
else
s = format (s, " dynamic translation\n");
if (na44_ed_is_fwd_bypass_session (sess))
s = format (s, " forwarding-bypass\n");
if (nat44_ed_is_lb_session (sess))
s = format (s, " load-balancing\n");
if (nat44_ed_is_twice_nat_session (sess))
s = format (s, " twice-nat\n");
return s;
}
u8 *
format_snat_static_mapping (u8 * s, va_list * args)
{
snat_static_mapping_t *m = va_arg (*args, snat_static_mapping_t *);
nat44_lb_addr_port_t *local;
if (is_sm_identity_nat (m->flags))
{
if (is_sm_addr_only (m->flags))
s = format (s, "identity mapping %U",
format_ip4_address, &m->local_addr);
else
s = format (s, "identity mapping %U %U:%d", format_ip_protocol,
m->proto, format_ip4_address, &m->local_addr,
clib_net_to_host_u16 (m->local_port));
pool_foreach (local, m->locals)
{
s = format (s, " vrf %d", local->vrf_id);
}
return s;
}
if (is_sm_addr_only (m->flags))
s =
format (s, "local %U external %U vrf %d %s %s", format_ip4_address,
&m->local_addr, format_ip4_address, &m->external_addr, m->vrf_id,
is_sm_twice_nat (m->flags) ?
"twice-nat" :
is_sm_self_twice_nat (m->flags) ? "self-twice-nat" : "",
is_sm_out2in_only (m->flags) ? "out2in-only" : "");
else
{
if (is_sm_lb (m->flags))
{
s =
format (s, "%U external %U:%d %s %s", format_ip_protocol, m->proto,
format_ip4_address, &m->external_addr,
clib_net_to_host_u16 (m->external_port),
is_sm_twice_nat (m->flags) ?
"twice-nat" :
is_sm_self_twice_nat (m->flags) ? "self-twice-nat" : "",
is_sm_out2in_only (m->flags) ? "out2in-only" : "");
pool_foreach (local, m->locals)
{
s = format (s, "\n local %U:%d vrf %d probability %d\%",
format_ip4_address, &local->addr,
clib_net_to_host_u16 (local->port), local->vrf_id,
local->probability);
}
}
else
s = format (s, "%U local %U:%d external %U:%d vrf %d %s %s",
format_ip_protocol, m->proto, format_ip4_address,
&m->local_addr, clib_net_to_host_u16 (m->local_port),
format_ip4_address, &m->external_addr,
clib_net_to_host_u16 (m->external_port), m->vrf_id,
is_sm_twice_nat (m->flags) ?
"twice-nat" :
is_sm_self_twice_nat (m->flags) ? "self-twice-nat" : "",
is_sm_out2in_only (m->flags) ? "out2in-only" : "");
}
return s;
}
u8 *
format_snat_static_map_to_resolve (u8 * s, va_list * args)
{
snat_static_mapping_resolve_t *m =
va_arg (*args, snat_static_mapping_resolve_t *);
vnet_main_t *vnm = vnet_get_main ();
if (is_sm_addr_only (m->flags))
s = format (s, "local %U external %U vrf %d",
format_ip4_address, &m->l_addr,
format_vnet_sw_if_index_name, vnm, m->sw_if_index, m->vrf_id);
else
s = format (s, "%U local %U:%d external %U:%d vrf %d", format_ip_protocol,
m->proto, format_ip4_address, &m->l_addr,
clib_net_to_host_u16 (m->l_port), format_vnet_sw_if_index_name,
vnm, m->sw_if_index, clib_net_to_host_u16 (m->e_port),
m->vrf_id);
return s;
}
u8 *
format_nat_ed_translation_error (u8 *s, va_list *args)
{
nat_translation_error_e e = va_arg (*args, nat_translation_error_e);
switch (e)
{
case NAT_ED_TRNSL_ERR_SUCCESS:
s = format (s, "success");
break;
case NAT_ED_TRNSL_ERR_TRANSLATION_FAILED:
s = format (s, "translation-failed");
break;
case NAT_ED_TRNSL_ERR_FLOW_MISMATCH:
s = format (s, "flow-mismatch");
break;
case NAT_ED_TRNSL_ERR_PACKET_TRUNCATED:
s = format (s, "packet-truncated");
break;
case NAT_ED_TRNSL_ERR_INNER_IP_CORRUPT:
s = format (s, "inner-ip-corrupted");
break;
case NAT_ED_TRNSL_ERR_INVALID_CSUM:
s = format (s, "invalid-checksum");
break;
}
return s;
}
u8 *
format_nat_6t_flow (u8 *s, va_list *args)
{
nat_6t_flow_t *f = va_arg (*args, nat_6t_flow_t *);
s = format (s, "match: %U ", format_nat_6t, &f->match);
int r = 0;
if (f->ops & NAT_FLOW_OP_SADDR_REWRITE)
{
s = format (s, "rewrite: saddr %U ", format_ip4_address,
f->rewrite.saddr.as_u8);
r = 1;
}
if (f->ops & NAT_FLOW_OP_SPORT_REWRITE)
{
if (!r)
{
s = format (s, "rewrite: ");
r = 1;
}
s = format (s, "sport %u ", clib_net_to_host_u16 (f->rewrite.sport));
}
if (f->ops & NAT_FLOW_OP_DADDR_REWRITE)
{
if (!r)
{
s = format (s, "rewrite: ");
r = 1;
}
s = format (s, "daddr %U ", format_ip4_address, f->rewrite.daddr.as_u8);
}
if (f->ops & NAT_FLOW_OP_DPORT_REWRITE)
{
if (!r)
{
s = format (s, "rewrite: ");
r = 1;
}
s = format (s, "dport %u ", clib_net_to_host_u16 (f->rewrite.dport));
}
if (f->ops & NAT_FLOW_OP_ICMP_ID_REWRITE)
{
if (!r)
{
s = format (s, "rewrite: ");
r = 1;
}
s = format (s, "icmp-id %u ", clib_net_to_host_u16 (f->rewrite.icmp_id));
}
if (f->ops & NAT_FLOW_OP_TXFIB_REWRITE)
{
if (!r)
{
s = format (s, "rewrite: ");
r = 1;
}
s = format (s, "txfib %u ", f->rewrite.fib_index);
}
return s;
}
u8 *
format_nat_6t (u8 *s, va_list *args)
{
nat_6t_t *t = va_arg (*args, nat_6t_t *);
s = format (s, "saddr %U sport %u daddr %U dport %u proto %U fib_idx %u",
format_ip4_address, t->saddr.as_u8,
clib_net_to_host_u16 (t->sport), format_ip4_address,
t->daddr.as_u8, clib_net_to_host_u16 (t->dport),
format_ip_protocol, t->proto, t->fib_index);
return s;
}
u8 *
format_nat44_ed_tcp_state (u8 *s, va_list *args)
{
nat44_ed_tcp_state_e e = va_arg (*args, nat44_ed_tcp_state_e);
switch (e)
{
case NAT44_ED_TCP_STATE_CLOSED:
s = format (s, "closed");
break;
case NAT44_ED_TCP_STATE_SYN_I2O:
s = format (s, "SYN seen in in2out direction");
break;
case NAT44_ED_TCP_STATE_SYN_O2I:
s = format (s, "SYN seen in out2in direction");
break;
case NAT44_ED_TCP_STATE_ESTABLISHED:
s = format (s, "SYN seen in both directions/established");
break;
case NAT44_ED_TCP_STATE_FIN_I2O:
s = format (s, "FIN seen in in2out direction");
break;
case NAT44_ED_TCP_STATE_FIN_O2I:
s = format (s, "FIN seen in out2in direction");
break;
case NAT44_ED_TCP_STATE_RST_TRANS:
s = format (s, "RST seen/transitory timeout");
break;
case NAT44_ED_TCP_STATE_FIN_TRANS:
s = format (s, "FIN seen in both directions/transitory timeout");
break;
case NAT44_ED_TCP_STATE_FIN_REOPEN_SYN_O2I:
s = format (s, "FIN seen in both directions/transitory timeout/session "
"reopening in out2in direction");
break;
case NAT44_ED_TCP_STATE_FIN_REOPEN_SYN_I2O:
s = format (s, "FIN seen in both directions/transitory timeout/session "
"reopening in in2out direction");
break;
case NAT44_ED_TCP_N_STATE:
s = format (s, "BUG! unexpected N_STATE! BUG!");
break;
}
return s;
}
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
|
