diff options
| author | Matt Johnston <matt@codeconstruct.com.au> | 2021-09-29 09:26:13 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-09-29 12:00:12 +0200 |
| commit | 6183569db80eedc648b584a658e6b898d43650cb (patch) | |
| tree | 8cb789fbf49185f10f2a7d96afc851b397d2cf35 /net/mctp | |
| parent | doc/mctp: Add a little detail about kernel internals (diff) | |
| download | linux-6183569db80eedc648b584a658e6b898d43650cb.tar.xz linux-6183569db80eedc648b584a658e6b898d43650cb.zip | |
mctp: Set route MTU via netlink
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>
Diffstat (limited to 'net/mctp')
| -rw-r--r-- | net/mctp/route.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/net/mctp/route.c b/net/mctp/route.c index acc5bb39e16d..e20f3096d067 100644 --- a/net/mctp/route.c +++ b/net/mctp/route.c @@ -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; |