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ripd: implement the 'clear-rip-route' YANG RPC

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This command deletes all received routes from the RIP routing table.
It should be used with caution as it can create black holes in the
network until RIP reconverges. Very useful to make automated testing
(e.g. ANVL) more predictable, since the internal state of ripd can be
cleared after each test.

Implement the command using a YANG RPC so that it can be executed by
other northbound clients in addition to the CLI.

Signed-off-by: Renato Westphal <renato@opensourcerouting.org>
This commit is contained in:
Renato Westphal 2018-05-09 01:35:04 -03:00
parent 6270ce38ad
commit 1137aef48f
4 changed files with 50 additions and 2 deletions
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14
ripd/rip_cli.c
View File

@ -1227,6 +1227,19 @@ void cli_show_ip_rip_authentication_key_chain(struct vty *vty,
yang_dnode_get_string(dnode, NULL));
}
/*
* XPath: /frr-ripd:clear-rip-route
*/
DEFPY (clear_ip_rip,
clear_ip_rip_cmd,
"clear ip rip",
CLEAR_STR
IP_STR
"Clear IP RIP database\n")
{
return nb_cli_rpc("/frr-ripd:clear-rip-route", NULL, NULL);
}
void rip_cli_init(void)
{
install_element(CONFIG_NODE, &router_rip_cmd);
@ -1269,4 +1282,5 @@ void rip_cli_init(void)
install_element(INTERFACE_NODE,
&no_ip_rip_authentication_key_chain_cmd);
install_element(ENABLE_NODE, &clear_ip_rip_cmd);
}

35
ripd/rip_northbound.c
View File

@ -1206,7 +1206,40 @@ ripd_state_routes_route_metric_get_elem(const char *xpath,
static int clear_rip_route_rpc(const char *xpath, const struct list *input,
struct list *output)
{
/* TODO: implement me. */
struct route_node *rp;
struct rip_info *rinfo;
struct list *list;
struct listnode *listnode;
/* Clear received RIP routes */
for (rp = route_top(rip->table); rp; rp = route_next(rp)) {
list = rp->info;
if (!list)
continue;
for (ALL_LIST_ELEMENTS_RO(list, listnode, rinfo)) {
if (!rip_route_rte(rinfo))
continue;
if (CHECK_FLAG(rinfo->flags, RIP_RTF_FIB))
rip_zebra_ipv4_delete(rp);
break;
}
if (rinfo) {
RIP_TIMER_OFF(rinfo->t_timeout);
RIP_TIMER_OFF(rinfo->t_garbage_collect);
listnode_delete(list, rinfo);
rip_info_free(rinfo);
}
if (list_isempty(list)) {
list_delete(&list);
rp->info = NULL;
route_unlock_node(rp);
}
}
return NB_OK;
}

2
ripd/ripd.c
View File

@ -95,7 +95,7 @@ static int sockopt_broadcast(int sock)
return 0;
}
static int rip_route_rte(struct rip_info *rinfo)
int rip_route_rte(struct rip_info *rinfo)
{
return (rinfo->type == ZEBRA_ROUTE_RIP
&& rinfo->sub_type == RIP_ROUTE_RTE);

1
ripd/ripd.h
View File

@ -437,6 +437,7 @@ extern void rip_distance_free(struct rip_distance *rdistance);
extern uint8_t rip_distance_apply(struct rip_info *);
extern void rip_redistribute_clean(void);
extern int rip_route_rte(struct rip_info *rinfo);
extern struct rip_info *rip_ecmp_add(struct rip_info *);
extern struct rip_info *rip_ecmp_replace(struct rip_info *);
extern struct rip_info *rip_ecmp_delete(struct rip_info *);