On 9/8/20 3:10 AM, Ido Schimmel wrote:
> From: Ido Schimmel <ido...@nvidia.com>
>
> Add a function that can be called by device drivers to set "offload" or
> "trap" indication on nexthops following nexthop notifications.
>
> Signed-off-by: Ido Schimmel <ido...@nvidia.com>
> ---
> include/net/nexthop.h | 1 +
> net/ipv4/nexthop.c | 21 +++++++++++++++++++++
> 2 files changed, 22 insertions(+)
>
> diff --git a/include/net/nexthop.h b/include/net/nexthop.h
> index 0bde1aa867c0..4147681e86d2 100644
> --- a/include/net/nexthop.h
> +++ b/include/net/nexthop.h
> @@ -146,6 +146,7 @@ struct nh_notifier_info {
>
> int register_nexthop_notifier(struct net *net, struct notifier_block *nb);
> int unregister_nexthop_notifier(struct net *net, struct notifier_block *nb);
> +void nexthop_hw_flags_set(struct net *net, u32 id, bool offload, bool trap);
how about nexthop_set_hw_flags? consistency with current nexthop_get_
... naming
>
> /* caller is holding rcu or rtnl; no reference taken to nexthop */
> struct nexthop *nexthop_find_by_id(struct net *net, u32 id);
> diff --git a/net/ipv4/nexthop.c b/net/ipv4/nexthop.c
> index 70c8ab6906ec..71605c612458 100644
> --- a/net/ipv4/nexthop.c
> +++ b/net/ipv4/nexthop.c
> @@ -2080,6 +2080,27 @@ int unregister_nexthop_notifier(struct net *net,
> struct notifier_block *nb)
> }
> EXPORT_SYMBOL(unregister_nexthop_notifier);
>
> +void nexthop_hw_flags_set(struct net *net, u32 id, bool offload, bool trap)
> +{
> + struct nexthop *nexthop;
> +
> + rcu_read_lock();
> +
> + nexthop = nexthop_find_by_id(net, id);
> + if (!nexthop)
> + goto out;
> +
> + nexthop->nh_flags &= ~(RTNH_F_OFFLOAD | RTNH_F_TRAP);
> + if (offload)
> + nexthop->nh_flags |= RTNH_F_OFFLOAD;
> + if (trap)
> + nexthop->nh_flags |= RTNH_F_TRAP;
> +
> +out:
> + rcu_read_unlock();
> +}
> +EXPORT_SYMBOL(nexthop_hw_flags_set);
> +
> static void __net_exit nexthop_net_exit(struct net *net)
> {
> rtnl_lock();
>
