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mctp: Set route MTU via netlink

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A route's RTAX_MTU can be set in nested RTAX_METRICS

Signed-off-by: Matt Johnston <matt@codeconstruct.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Matt Johnston 2021-09-29 15:26:13 +08:00 • committed by David S. Miller
parent f4d41c5913
commit 6183569db8
1 changed files with 13 additions and 1 deletions
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14
net/mctp/route.c
View file

@ -1026,10 +1026,15 @@ static int mctp_route_nlparse(struct sk_buff *skb, struct nlmsghdr *nlh,
return 0;
}
static const struct nla_policy rta_metrics_policy[RTAX_MAX + 1] = {
[RTAX_MTU] = { .type = NLA_U32 },
};
static int mctp_newroute(struct sk_buff *skb, struct nlmsghdr *nlh,
struct netlink_ext_ack *extack)
{
struct nlattr *tb[RTA_MAX + 1];
struct nlattr *tbx[RTAX_MAX + 1];
mctp_eid_t daddr_start;
struct mctp_dev *mdev;
struct rtmsg *rtm;
@ -1046,8 +1051,15 @@ static int mctp_newroute(struct sk_buff *skb, struct nlmsghdr *nlh,
return -EINVAL;
}
/* TODO: parse mtu from nlparse */
mtu = 0;
if (tb[RTA_METRICS]) {
rc = nla_parse_nested(tbx, RTAX_MAX, tb[RTA_METRICS],
rta_metrics_policy, NULL);
if (rc < 0)
return rc;
if (tbx[RTAX_MTU])
mtu = nla_get_u32(tbx[RTAX_MTU]);
}
if (rtm->rtm_type != RTN_UNICAST)
return -EINVAL;