Commit 56ad5ba3 authored by Ido Schimmel's avatar Ido Schimmel Committed by David S. Miller

nexthop: Allow setting "offload" and "trap" indication of nexthop buckets

Add a function that can be called by device drivers to set "offload" or
"trap" indication on nexthop buckets following nexthop notifications and
other changes such as a neighbour becoming invalid.
Signed-off-by: default avatarIdo Schimmel <idosch@nvidia.com>
Reviewed-by: default avatarPetr Machata <petrm@nvidia.com>
Reviewed-by: default avatarDavid Ahern <dsahern@kernel.org>
Signed-off-by: default avatarPetr Machata <petrm@nvidia.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 7c37c7e0
......@@ -220,6 +220,8 @@ int register_nexthop_notifier(struct net *net, struct notifier_block *nb,
struct netlink_ext_ack *extack);
int unregister_nexthop_notifier(struct net *net, struct notifier_block *nb);
void nexthop_set_hw_flags(struct net *net, u32 id, bool offload, bool trap);
void nexthop_bucket_set_hw_flags(struct net *net, u32 id, u16 bucket_index,
bool offload, bool trap);
/* caller is holding rcu or rtnl; no reference taken to nexthop */
struct nexthop *nexthop_find_by_id(struct net *net, u32 id);
......
......@@ -3072,6 +3072,40 @@ void nexthop_set_hw_flags(struct net *net, u32 id, bool offload, bool trap)
}
EXPORT_SYMBOL(nexthop_set_hw_flags);
void nexthop_bucket_set_hw_flags(struct net *net, u32 id, u16 bucket_index,
bool offload, bool trap)
{
struct nh_res_table *res_table;
struct nh_res_bucket *bucket;
struct nexthop *nexthop;
struct nh_group *nhg;
rcu_read_lock();
nexthop = nexthop_find_by_id(net, id);
if (!nexthop || !nexthop->is_group)
goto out;
nhg = rcu_dereference(nexthop->nh_grp);
if (!nhg->resilient)
goto out;
if (bucket_index >= nhg->res_table->num_nh_buckets)
goto out;
res_table = rcu_dereference(nhg->res_table);
bucket = &res_table->nh_buckets[bucket_index];
bucket->nh_flags &= ~(RTNH_F_OFFLOAD | RTNH_F_TRAP);
if (offload)
bucket->nh_flags |= RTNH_F_OFFLOAD;
if (trap)
bucket->nh_flags |= RTNH_F_TRAP;
out:
rcu_read_unlock();
}
EXPORT_SYMBOL(nexthop_bucket_set_hw_flags);
static void __net_exit nexthop_net_exit(struct net *net)
{
rtnl_lock();
......
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