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authorKlement Sekera <ksekera@cisco.com>2021-03-01 20:26:00 +0100
committerKlement Sekera <ksekera@cisco.com>2021-03-01 20:26:00 +0100
commit2c0b6b462b86d4010cf551b545083c3509839cac (patch)
treef348d4bada415a5109ab0f519b3270055629ca5d /src/plugins
parentdc243ee2bcc4926ec23e71a687bb62b5c52c2fbb (diff)
nat: avoid crash if plugin not enabled
Avoid crash if nat pool not allocated when issuing "show nat44 summary". Type: fix Signed-off-by: Klement Sekera <ksekera@cisco.com> Change-Id: I55661cf699bab04f4673e9d471fe12486e972067
Diffstat (limited to 'src/plugins')
-rw-r--r--src/plugins/nat/nat44-ed/nat44_ed_cli.c39
1 files changed, 21 insertions, 18 deletions
diff --git a/src/plugins/nat/nat44-ed/nat44_ed_cli.c b/src/plugins/nat/nat44-ed/nat44_ed_cli.c
index 714b410bbd3..bff941f409a 100644
--- a/src/plugins/nat/nat44-ed/nat44_ed_cli.c
+++ b/src/plugins/nat/nat44-ed/nat44_ed_cli.c
@@ -448,26 +448,29 @@ nat44_show_lru_summary (vlib_main_t * vm, snat_main_per_thread_data_t * tsm,
snat_session_t *s;
u32 oldest_index;
-#define _(n, d) \
- oldest_index = \
- clib_dlist_remove_head (tsm->lru_pool, tsm->n##_lru_head_index); \
- if (~0 != oldest_index) \
- { \
- oldest_elt = pool_elt_at_index (tsm->lru_pool, oldest_index); \
- s = pool_elt_at_index (tsm->sessions, oldest_elt->value); \
- sess_timeout_time = \
- s->last_heard + (f64)nat44_session_get_timeout (sm, s); \
- vlib_cli_output (vm, d " LRU min session timeout %llu (now %llu)", \
- sess_timeout_time, now); \
- clib_dlist_addhead (tsm->lru_pool, tsm->n##_lru_head_index, \
- oldest_index); \
+ if (tsm->lru_pool)
+ {
+#define _(n, d) \
+ oldest_index = \
+ clib_dlist_remove_head (tsm->lru_pool, tsm->n##_lru_head_index); \
+ if (~0 != oldest_index) \
+ { \
+ oldest_elt = pool_elt_at_index (tsm->lru_pool, oldest_index); \
+ s = pool_elt_at_index (tsm->sessions, oldest_elt->value); \
+ sess_timeout_time = \
+ s->last_heard + (f64) nat44_session_get_timeout (sm, s); \
+ vlib_cli_output (vm, d " LRU min session timeout %llu (now %llu)", \
+ sess_timeout_time, now); \
+ clib_dlist_addhead (tsm->lru_pool, tsm->n##_lru_head_index, \
+ oldest_index); \
}
- _(tcp_estab, "established tcp");
- _(tcp_trans, "transitory tcp");
- _(udp, "udp");
- _(unk_proto, "unknown protocol");
- _(icmp, "icmp");
+ _ (tcp_estab, "established tcp");
+ _ (tcp_trans, "transitory tcp");
+ _ (udp, "udp");
+ _ (unk_proto, "unknown protocol");
+ _ (icmp, "icmp");
#undef _
+ }
}
static clib_error_t *
} /* Keyword.Declaration */ .highlight .kn { color: #008800; font-weight: bold } /* Keyword.Namespace */ .highlight .kp { color: #008800 } /* Keyword.Pseudo */ .highlight .kr { color: #008800; font-weight: bold } /* Keyword.Reserved */ .highlight .kt { color: #888888; font-weight: bold } /* Keyword.Type */ .highlight .m { color: #0000DD; font-weight: bold } /* Literal.Number */ .highlight .s { color: #dd2200; background-color: #fff0f0 } /* Literal.String */ .highlight .na { color: #336699 } /* Name.Attribute */ .highlight .nb { color: #003388 } /* Name.Builtin */ .highlight .nc { color: #bb0066; font-weight: bold } /* Name.Class */ .highlight .no { color: #003366; font-weight: bold } /* Name.Constant */ .highlight .nd { color: #555555 } /* Name.Decorator */ .highlight .ne { color: #bb0066; font-weight: bold } /* Name.Exception */ .highlight .nf { color: #0066bb; font-weight: bold } /* Name.Function */ .highlight .nl { color: #336699; font-style: italic } /* Name.Label */ .highlight .nn { color: #bb0066; font-weight: bold } /* Name.Namespace */ .highlight .py { color: #336699; font-weight: bold } /* Name.Property */ .highlight .nt { color: #bb0066; font-weight: bold } /* Name.Tag */ .highlight .nv { color: #336699 } /* Name.Variable */ .highlight .ow { color: #008800 } /* Operator.Word */ .highlight .w { color: #bbbbbb } /* Text.Whitespace */ .highlight .mb { color: #0000DD; font-weight: bold } /* Literal.Number.Bin */ .highlight .mf { color: #0000DD; font-weight: bold } /* Literal.Number.Float */ .highlight .mh { color: #0000DD; font-weight: bold } /* Literal.Number.Hex */ .highlight .mi { color: #0000DD; font-weight: bold } /* Literal.Number.Integer */ .highlight .mo { color: #0000DD; font-weight: bold } /* Literal.Number.Oct */ .highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */ .highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */ .highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */ .highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */ .highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */ .highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */ .highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */ .highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */ .highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */ .highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */ .highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */ .highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */ .highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */ .highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */ .highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */ .highlight .vc { color: #336699 } /* Name.Variable.Class */ .highlight .vg { color: #dd7700 } /* Name.Variable.Global */ .highlight .vi { color: #3333bb } /* Name.Variable.Instance */ .highlight .vm { color: #336699 } /* Name.Variable.Magic */ .highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */ } 
/*
 * 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.
 */

#ifndef __IP6_LL_TABLE_H__
#define __IP6_LL_TABLE_H__

#include <vnet/ip/ip.h>

#include <vnet/ip/ip6_ll_types.h>

/**
 * @brief
 *   A protocol Independent IP multicast FIB table
 */
typedef struct ip6_ll_table_t_
{
  /**
   * A vector, indexed by sw_if_index, of unicast IPv6 FIBs
   */
  u32 *ilt_fibs;

  /**
   * Total route counters
   */
  u32 ilt_total_route_counts;

} ip6_ll_table_t;

/**
 * @brief
 *  Perfom a longest prefix match in the non-forwarding table
 *
 * @param prefix
 *  The prefix to lookup
 *
 * @return
 *  The index of the fib_entry_t for the best match, which may be the default route
 */
extern fib_node_index_t ip6_ll_table_lookup (const ip6_ll_prefix_t * prefix);

/**
 * @brief
 *  Perfom an exact match in the non-forwarding table
 *
 * @param prefix
 *  The prefix to lookup
 *
 * @return
 *  The index of the fib_entry_t for the exact match, or INVALID
 *  is there is no match.
 */
extern fib_node_index_t ip6_ll_table_lookup_exact_match
  (const ip6_ll_prefix_t * prefix);

/**
 * @brief
 * Update an entry in the table. The falgs determine if the entry is
 * LOCAL, in which case it's a receive, or not, in which case the entry
 * will link to an adjacency.
 *
 * @param prefix
 *  The prefix for the entry to add
 *
 * @return
 *  the index of the fib_entry_t that is created (or existed already).
 */
extern fib_node_index_t ip6_ll_table_entry_update
  (const ip6_ll_prefix_t * prefix, fib_route_path_flags_t flags);

/**
 * @brief
 *  Delete a IP6 link-local entry.
 *
 * @param prefix
 *  The prefix for the entry to remove
 */
extern void ip6_ll_table_entry_delete (const ip6_ll_prefix_t * prefix);

/**
 * @brief For use in the data plane. Get the underlying ip6 FIB
 */
extern u32 ip6_ll_fib_get (u32 sw_if_index);

/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */

#endif