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mctp: Add dest neighbour lladdr to route output

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Now that we have a neighbour implementation, hook it up to the output
path to set the dest hardware address for outgoing packets.

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 2021-07-29 10:20:51 +08:00 committed by David S. Miller
parent 4a992bbd36
commit 26ab3fcaf2
1 changed files with 8 additions and 2 deletions
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10
net/mctp/route.c
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@ -376,6 +376,9 @@ static unsigned int mctp_route_mtu(struct mctp_route *rt)
static int mctp_route_output(struct mctp_route *route, struct sk_buff *skb)
{
struct mctp_hdr *hdr = mctp_hdr(skb);
char daddr_buf[MAX_ADDR_LEN];
char *daddr = NULL;
unsigned int mtu;
int rc;
@ -387,9 +390,12 @@ static int mctp_route_output(struct mctp_route *route, struct sk_buff *skb)
return -EMSGSIZE;
}
/* TODO: daddr (from rt->neigh), saddr (from device?) */
/* If lookup fails let the device handle daddr==NULL */
if (mctp_neigh_lookup(route->dev, hdr->dest, daddr_buf) == 0)
daddr = daddr_buf;
rc = dev_hard_header(skb, skb->dev, ntohs(skb->protocol),
NULL, NULL, skb->len);
daddr, skb->dev->dev_addr, skb->len);
if (rc) {
kfree_skb(skb);
return -EHOSTUNREACH;