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ip: nexthop: factor out ipnh_get_id rtnl talk into a helper 

Factor out ipnh_get_id's rtnl talk portion into a separate helper which
will be reused later to retrieve nexthops for caching.

Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: David Ahern <dsahern@kernel.org>
This commit is contained in:
Nikolay Aleksandrov 2021-09-30 14:38:40 +03:00 committed by David Ahern
parent a2ca431215
commit 53d7c43bd3
1 changed files with 20 additions and 13 deletions
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33
ip/ipnexthop.c
View File

@ -485,6 +485,25 @@ static void __print_nexthop_entry(FILE *fp, const char *jsobj,
close_json_object();
}
static int __ipnh_get_id(struct rtnl_handle *rthp, __u32 nh_id,
struct nlmsghdr **answer)
{
struct {
struct nlmsghdr n;
struct nhmsg nhm;
char buf[1024];
} req = {
.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct nhmsg)),
.n.nlmsg_flags = NLM_F_REQUEST,
.n.nlmsg_type = RTM_GETNEXTHOP,
.nhm.nh_family = preferred_family,
};
addattr32(&req.n, sizeof(req), NHA_ID, nh_id);
return rtnl_talk(rthp, &req.n, answer);
}
int print_nexthop(struct nlmsghdr *n, void *arg)
{
struct nhmsg *nhm = NLMSG_DATA(n);
@ -827,21 +846,9 @@ static int ipnh_modify(int cmd, unsigned int flags, int argc, char **argv)
static int ipnh_get_id(__u32 id)
{
struct {
struct nlmsghdr n;
struct nhmsg nhm;
char buf[1024];
} req = {
.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct nhmsg)),
.n.nlmsg_flags = NLM_F_REQUEST,
.n.nlmsg_type = RTM_GETNEXTHOP,
.nhm.nh_family = preferred_family,
};
struct nlmsghdr *answer;
addattr32(&req.n, sizeof(req), NHA_ID, id);
if (rtnl_talk(&rth, &req.n, &answer) < 0)
if (__ipnh_get_id(&rth, id, &answer) < 0)
return -2;
new_json_obj(json);