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.
Changes since RFC:
* s/nexthop_hw_flags_set/nexthop_set_hw_flags/
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 4a17b040b502..aa7ac12c35e2 100644
--- a/include/net/nexthop.h
+++ b/include/net/nexthop.h
@@ -145,6 +145,7 @@ 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_set_hw_flags(struct net *net, u32 id, 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);
diff --git a/net/ipv4/nexthop.c b/net/ipv4/nexthop.c
index 1d66f2439063..d1a1600aee18 100644
--- a/net/ipv4/nexthop.c
+++ b/net/ipv4/nexthop.c
@@ -2081,6 +2081,27 @@ int unregister_nexthop_notifier(struct net *net, struct
notifier_block *nb)
}
EXPORT_SYMBOL(unregister_nexthop_notifier);
+void nexthop_set_hw_flags(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_set_hw_flags);
+
static void __net_exit nexthop_net_exit(struct net *net)
{
rtnl_lock();
--
2.26.2
