Commit 6183569d authored by Matt Johnston's avatar Matt Johnston Committed by David S. Miller
Browse files

mctp: Set route MTU via netlink 



A route's RTAX_MTU can be set in nested RTAX_METRICS

Signed-off-by: default avatarMatt Johnston <matt@codeconstruct.com.au>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent f4d41c59

net/mctp/route.c

+13 −1
Original line number Diff line number Diff line
@@ -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;