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nat: avoid crash if plugin not enabled

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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
This commit is contained in:
Klement Sekera
2021-03-01 20:26:00 +01:00
parent dc243ee2bc
commit 2c0b6b462b
1 changed files with 21 additions and 18 deletions
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39
src/plugins/nat/nat44-ed/nat44_ed_cli.c
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@ -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 *