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[NET]: Introduce RTA_TABLE/FRA_TABLE attributes

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Introduce RTA_TABLE route attribute and FRA_TABLE routing rule attribute
to hold 32 bit routing table IDs. Usespace compatibility is provided by
continuing to accept and send the rtm_table field, but because of its
limited size it can only carry the low 8 bits of the table ID. This
implies that if larger IDs are used, _all_ userspace programs using them
need to use RTA_TABLE.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy
2006-08-10 23:09:48 -07:00
committed by David S. Miller
parent 2dfe55b47e
commit 9e762a4a89
13 changed files with 45 additions and 12 deletions
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7
net/ipv4/fib_frontend.c
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@@ -294,7 +294,8 @@ static int inet_check_attr(struct rtmsg *r, struct rtattr **rta)
if (attr) {
if (RTA_PAYLOAD(attr) < 4)
return -EINVAL;
if (i != RTA_MULTIPATH && i != RTA_METRICS)
if (i != RTA_MULTIPATH && i != RTA_METRICS &&
i != RTA_TABLE)
*rta = (struct rtattr*)RTA_DATA(attr);
}
}
@@ -310,7 +311,7 @@ int inet_rtm_delroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
if (inet_check_attr(r, rta))
return -EINVAL;
tb = fib_get_table(r->rtm_table);
tb = fib_get_table(rtm_get_table(rta, r->rtm_table));
if (tb)
return tb->tb_delete(tb, r, (struct kern_rta*)rta, nlh, &NETLINK_CB(skb));
return -ESRCH;
@@ -325,7 +326,7 @@ int inet_rtm_newroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
if (inet_check_attr(r, rta))
return -EINVAL;
tb = fib_new_table(r->rtm_table);
tb = fib_new_table(rtm_get_table(rta, r->rtm_table));
if (tb)
return tb->tb_insert(tb, r, (struct kern_rta*)rta, nlh, &NETLINK_CB(skb));
return -ENOBUFS;