Evgeniy Polyakov <[EMAIL PROTECTED]> wrote:
> That is the same, dst is dereferenced as rtable.
> Cloned dst is returned, so it must be put back at the ned of the usage.
If that's the case, then why do you bother to clone it in route_get_raw()?
Surely that'll give you *two* clones...
BTW, it seems to work. The attached function gives me:
[0mount ] <== rxrpc_assess_MTU_size() [if_mtu 1500]
Thanks!
David
---
static void rxrpc_assess_MTU_size(struct rxrpc_peer *peer)
{
struct rtable *rt;
struct flowi fl;
int ret;
peer->if_mtu = 1500;
memset(&fl, 0, sizeof(fl));
switch (peer->srx.transport.family) {
case AF_INET:
fl.oif = 0;
fl.proto = IPPROTO_UDP,
fl.nl_u.ip4_u.saddr = 0;
fl.nl_u.ip4_u.daddr = peer->srx.transport.sin.sin_addr.s_addr;
fl.nl_u.ip4_u.tos = 0;
/* assume AFS.CM talking to AFS.FS */
fl.uli_u.ports.sport = htonl(7001);
fl.uli_u.ports.dport = htonl(7000);
break;
default:
BUG();
}
ret = ip_route_output_key(&rt, &fl);
if (ret < 0) {
kleave(" [route err %d]", ret);
return;
}
peer->if_mtu = dst_mtu(&rt->u.dst);
kleave(" [if_mtu %u]", peer->if_mtu);
}
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