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isisd: check interface pointer before accessing

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On some cases (protocol convergence down or daemon exit) we'll have the
interface pointer in the circuit as `NULL`, so don't attempt to access
it.

Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>
This commit is contained in:
Rafael Zalamena 2020-05-29 17:46:29 -03:00
parent f3e1d2241e
commit c2afd32f36
1 changed files with 7 additions and 4 deletions
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11
isisd/isis_bfd.c
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@ -263,9 +263,10 @@ static void bfd_handle_adj_down(struct isis_adjacency *adj)
ZEBRA_BFD_DEST_DEREGISTER); ZEBRA_BFD_DEST_DEREGISTER);
bfd_peer_sendmsg(zclient, NULL, adj->bfd_session->family, bfd_peer_sendmsg(zclient, NULL, adj->bfd_session->family,
&adj->bfd_session->dst_ip, &adj->bfd_session->dst_ip, &adj->bfd_session->src_ip,
&adj->bfd_session->src_ip, (adj->circuit->interface)
adj->circuit->interface->name, ? adj->circuit->interface->name
: NULL,
0, /* ttl */ 0, /* ttl */
0, /* multihop */ 0, /* multihop */
1, /* control plane independent bit is on */ 1, /* control plane independent bit is on */
@ -324,7 +325,9 @@ static void bfd_handle_adj_up(struct isis_adjacency *adj, int command)
bfd_peer_sendmsg(zclient, circuit->bfd_info, adj->bfd_session->family, bfd_peer_sendmsg(zclient, circuit->bfd_info, adj->bfd_session->family,
&adj->bfd_session->dst_ip, &adj->bfd_session->dst_ip,
&adj->bfd_session->src_ip, &adj->bfd_session->src_ip,
circuit->interface->name, (adj->circuit->interface)
? adj->circuit->interface->name
: NULL,
0, /* ttl */ 0, /* ttl */
0, /* multihop */ 0, /* multihop */
1, /* control plane independent bit is on */ 1, /* control plane independent bit is on */