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-rw-r--r--src/plugins/nat/nat_format.c332
1 files changed, 332 insertions, 0 deletions
diff --git a/src/plugins/nat/nat_format.c b/src/plugins/nat/nat_format.c
new file mode 100644
index 00000000000..279d6664933
--- /dev/null
+++ b/src/plugins/nat/nat_format.c
@@ -0,0 +1,332 @@
+/*
+ * 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.
+ */
+/**
+ * @file
+ * @brief NAT formatting
+ */
+
+#include <nat/nat.h>
+#include <nat/nat_det.h>
+
+uword
+unformat_snat_protocol (unformat_input_t * input, va_list * args)
+{
+ u32 *r = va_arg (*args, u32 *);
+
+ if (0);
+#define _(N, i, n, s) else if (unformat (input, s)) *r = SNAT_PROTOCOL_##N;
+ foreach_snat_protocol
+#undef _
+ else
+ return 0;
+ return 1;
+}
+
+u8 *
+format_snat_protocol (u8 * s, va_list * args)
+{
+ u32 i = va_arg (*args, u32);
+ u8 *t = 0;
+
+ switch (i)
+ {
+#define _(N, j, n, str) case SNAT_PROTOCOL_##N: t = (u8 *) str; break;
+ foreach_snat_protocol
+#undef _
+ default:
+ s = format (s, "unknown");
+ return s;
+ }
+ s = format (s, "%s", t);
+ return s;
+}
+
+u8 *
+format_nat_addr_and_port_alloc_alg (u8 * s, va_list * args)
+{
+ u32 i = va_arg (*args, u32);
+ u8 *t = 0;
+
+ switch (i)
+ {
+#define _(v, N, s) case NAT_ADDR_AND_PORT_ALLOC_ALG_##N: t = (u8 *) s; break;
+ foreach_nat_addr_and_port_alloc_alg
+#undef _
+ default:
+ s = format (s, "unknown");
+ return s;
+ }
+ s = format (s, "%s", t);
+ return s;
+}
+
+u8 *
+format_snat_key (u8 * s, va_list * args)
+{
+ snat_session_key_t *key = va_arg (*args, snat_session_key_t *);
+
+ s = format (s, "%U proto %U port %d fib %d",
+ format_ip4_address, &key->addr,
+ format_snat_protocol, key->protocol,
+ clib_net_to_host_u16 (key->port), key->fib_index);
+ return s;
+}
+
+u8 *
+format_static_mapping_key (u8 * s, va_list * args)
+{
+ snat_session_key_t *key = va_arg (*args, snat_session_key_t *);
+
+ s = format (s, "%U proto %U port %d fib %d",
+ format_ip4_address, &key->addr,
+ format_snat_protocol, key->protocol, key->port, key->fib_index);
+ return s;
+}
+
+u8 *
+format_snat_session_state (u8 * s, va_list * args)
+{
+ u32 i = va_arg (*args, u32);
+ u8 *t = 0;
+
+ switch (i)
+ {
+#define _(v, N, str) case SNAT_SESSION_##N: t = (u8 *) str; break;
+ foreach_snat_session_state
+#undef _
+ default:
+ t = format (t, "unknown");
+ }
+ s = format (s, "%s", t);
+ return s;
+}
+
+u8 *
+format_snat_session (u8 * s, va_list * args)
+{
+ snat_main_per_thread_data_t *sm =
+ va_arg (*args, snat_main_per_thread_data_t *);
+ snat_session_t *sess = va_arg (*args, snat_session_t *);
+
+ if (snat_is_unk_proto_session (sess))
+ {
+ s = format (s, " i2o %U proto %u fib %u\n",
+ format_ip4_address, &sess->in2out.addr,
+ clib_net_to_host_u16 (sess->in2out.port),
+ sess->in2out.fib_index);
+ s = format (s, " o2i %U proto %u fib %u\n",
+ format_ip4_address, &sess->out2in.addr,
+ clib_net_to_host_u16 (sess->out2in.port),
+ sess->out2in.fib_index);
+ }
+ else
+ {
+ s = format (s, " i2o %U\n", format_snat_key, &sess->in2out);
+ s = format (s, " o2i %U\n", format_snat_key, &sess->out2in);
+ }
+ if (is_ed_session (sess) || is_fwd_bypass_session (sess))
+ {
+ if (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, " index %llu\n", sess - sm->sessions);
+ s = format (s, " last heard %.2f\n", sess->last_heard);
+ s = format (s, " total pkts %d, total bytes %lld\n",
+ sess->total_pkts, sess->total_bytes);
+ if (snat_is_session_static (sess))
+ s = format (s, " static translation\n");
+ else
+ s = format (s, " dynamic translation\n");
+ if (is_fwd_bypass_session (sess))
+ s = format (s, " forwarding-bypass\n");
+ if (is_lb_session (sess))
+ s = format (s, " load-balancing\n");
+ if (is_twice_nat_session (sess))
+ s = format (s, " twice-nat\n");
+
+ return s;
+}
+
+u8 *
+format_snat_user (u8 * s, va_list * args)
+{
+ snat_main_per_thread_data_t *sm =
+ va_arg (*args, snat_main_per_thread_data_t *);
+ snat_user_t *u = va_arg (*args, snat_user_t *);
+ int verbose = va_arg (*args, int);
+ dlist_elt_t *head, *elt;
+ u32 elt_index, head_index;
+ u32 session_index;
+ snat_session_t *sess;
+
+ s = format (s, "%U: %d dynamic translations, %d static translations\n",
+ format_ip4_address, &u->addr, u->nsessions, u->nstaticsessions);
+
+ if (verbose == 0)
+ return s;
+
+ if (u->nsessions || u->nstaticsessions)
+ {
+ head_index = u->sessions_per_user_list_head_index;
+ head = pool_elt_at_index (sm->list_pool, head_index);
+
+ elt_index = head->next;
+ elt = pool_elt_at_index (sm->list_pool, elt_index);
+ session_index = elt->value;
+
+ while (session_index != ~0)
+ {
+ sess = pool_elt_at_index (sm->sessions, session_index);
+
+ s = format (s, " %U\n", format_snat_session, sm, sess);
+
+ elt_index = elt->next;
+ elt = pool_elt_at_index (sm->list_pool, elt_index);
+ session_index = elt->value;
+ }
+ }
+
+ 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 (m->addr_only)
+ 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,
+ m->twice_nat == TWICE_NAT ? "twice-nat" :
+ m->twice_nat == TWICE_NAT_SELF ? "self-twice-nat" : "",
+ m->out2in_only ? "out2in-only" : "");
+ else
+ {
+ if (vec_len (m->locals))
+ {
+ s = format (s, "%U external %U:%d %s %s",
+ format_snat_protocol, m->proto,
+ format_ip4_address, &m->external_addr, m->external_port,
+ m->twice_nat == TWICE_NAT ? "twice-nat" :
+ m->twice_nat == TWICE_NAT_SELF ? "self-twice-nat" : "",
+ m->out2in_only ? "out2in-only" : "");
+ vec_foreach (local, m->locals)
+ s = format (s, "\n local %U:%d vrf %d probability %d\%",
+ format_ip4_address, &local->addr, local->port,
+ local->vrf_id, local->probability);
+ }
+ else
+ s = format (s, "%U local %U:%d external %U:%d vrf %d %s %s",
+ format_snat_protocol, m->proto,
+ format_ip4_address, &m->local_addr, m->local_port,
+ format_ip4_address, &m->external_addr, m->external_port,
+ m->vrf_id,
+ m->twice_nat == TWICE_NAT ? "twice-nat" :
+ m->twice_nat == TWICE_NAT_SELF ? "self-twice-nat" : "",
+ m->out2in_only ? "out2in-only" : "");
+ }
+ return s;
+}
+
+u8 *
+format_snat_static_map_to_resolve (u8 * s, va_list * args)
+{
+ snat_static_map_resolve_t *m = va_arg (*args, snat_static_map_resolve_t *);
+ vnet_main_t *vnm = vnet_get_main ();
+
+ if (m->addr_only)
+ 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_snat_protocol, m->proto,
+ format_ip4_address, &m->l_addr, m->l_port,
+ format_vnet_sw_if_index_name, vnm, m->sw_if_index,
+ m->e_port, m->vrf_id);
+
+ return s;
+}
+
+u8 *
+format_det_map_ses (u8 * s, va_list * args)
+{
+ snat_det_map_t *det_map = va_arg (*args, snat_det_map_t *);
+ ip4_address_t in_addr, out_addr;
+ u32 in_offset, out_offset;
+ snat_det_session_t *ses = va_arg (*args, snat_det_session_t *);
+ u32 *i = va_arg (*args, u32 *);
+
+ u32 user_index = *i / SNAT_DET_SES_PER_USER;
+ in_addr.as_u32 =
+ clib_host_to_net_u32 (clib_net_to_host_u32 (det_map->in_addr.as_u32) +
+ user_index);
+ in_offset =
+ clib_net_to_host_u32 (in_addr.as_u32) -
+ clib_net_to_host_u32 (det_map->in_addr.as_u32);
+ out_offset = in_offset / det_map->sharing_ratio;
+ out_addr.as_u32 =
+ clib_host_to_net_u32 (clib_net_to_host_u32 (det_map->out_addr.as_u32) +
+ out_offset);
+ s =
+ format (s,
+ "in %U:%d out %U:%d external host %U:%d state: %U expire: %d\n",
+ format_ip4_address, &in_addr, clib_net_to_host_u16 (ses->in_port),
+ format_ip4_address, &out_addr,
+ clib_net_to_host_u16 (ses->out.out_port), format_ip4_address,
+ &ses->out.ext_host_addr,
+ clib_net_to_host_u16 (ses->out.ext_host_port),
+ format_snat_session_state, ses->state, ses->expire);
+
+ return s;
+}
+
+u8 *
+format_nat44_reass_trace (u8 * s, va_list * args)
+{
+ CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
+ CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
+ nat44_reass_trace_t *t = va_arg (*args, nat44_reass_trace_t *);
+
+ s = format (s, "NAT44_REASS: sw_if_index %d, next index %d, status %s",
+ t->sw_if_index, t->next_index,
+ t->cached ? "cached" : "translated");
+
+ return s;
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */