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ipv6: Add "offload" and "trap" indications to routes 

In a similar fashion to previous patch, add "offload" and "trap"
indication to IPv6 routes.

This is done by using two unused bits in 'struct fib6_info' to hold
these indications. Capable drivers are expected to set these when
processing the various in-kernel route notifications.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Acked-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ido Schimmel 2020-01-14 13:23:12 +02:00 committed by David S. Miller
parent 90b93f1b31
commit bb3c4ab93e
2 changed files with 17 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
include/net/ip6_fib.h
View File

@ -192,7 +192,9 @@ struct fib6_info {
dst_nopolicy:1,
dst_host:1,
fib6_destroying:1,
unused:3;
offload:1,
trap:1,
unused:1;
struct rcu_head rcu;
struct nexthop *nh;
@ -329,6 +331,13 @@ static inline void fib6_info_release(struct fib6_info *f6i)
call_rcu(&f6i->rcu, fib6_info_destroy_rcu);
}
static inline void fib6_info_hw_flags_set(struct fib6_info *f6i, bool offload,
bool trap)
{
f6i->offload = offload;
f6i->trap = trap;
}
enum fib6_walk_state {
#ifdef CONFIG_IPV6_SUBTREES
FWS_S,

7
net/ipv6/route.c
View File

@ -5576,6 +5576,13 @@ static int rt6_fill_node(struct net *net, struct sk_buff *skb,
expires -= jiffies;
}
if (!dst) {
if (rt->offload)
rtm->rtm_flags |= RTM_F_OFFLOAD;
if (rt->trap)
rtm->rtm_flags |= RTM_F_TRAP;
}
if (rtnl_put_cacheinfo(skb, dst, 0, expires, dst ? dst->error : 0) < 0)
goto nla_put_failure;