From: Steffen Klassert <steffen.klassert@xxxxxxxxxxx>
With this helper it is possible to request callbacks with
a certain priority. This will be used in the upcoming forward
fastpath to pass packets to the standard GRO path.
Signed-off-by: Steffen Klassert <steffen.klassert@xxxxxxxxxxx>
Signed-off-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
---
include/linux/netdevice.h | 1 +
net/core/dev.c | 14 ++++++++++++++
2 files changed, 15 insertions(+)
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 3ec9850c7936..13a56f9b2a32 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -2523,6 +2523,7 @@ void dev_remove_pack(struct packet_type *pt);
void __dev_remove_pack(struct packet_type *pt);
void dev_add_offload(struct packet_offload *po);
void dev_remove_offload(struct packet_offload *po);
+struct packet_offload *dev_get_packet_offload(__be16 type, int priority);
int dev_get_iflink(const struct net_device *dev);
int dev_fill_metadata_dst(struct net_device *dev, struct sk_buff *skb);
diff --git a/net/core/dev.c b/net/core/dev.c
index 6e18242a1cae..115de8bfcb54 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -468,7 +468,21 @@ void dev_remove_pack(struct packet_type *pt)
}
EXPORT_SYMBOL(dev_remove_pack);
+struct packet_offload *dev_get_packet_offload(__be16 type, int priority)
+{
+ struct list_head *offload_head = &offload_base;
+ struct packet_offload *ptype;
+
+ list_for_each_entry_rcu(ptype, offload_head, list) {
+ if (ptype->type != type || !ptype->callbacks.gro_receive || !ptype->callbacks.gro_complete || ptype->priority < priority)
+ continue;
+ return ptype;
+ }
+
+ return NULL;
+}
+EXPORT_SYMBOL(dev_get_packet_offload);
/**
* dev_add_offload - register offload handlers
* @po: protocol offload declaration
--
2.11.0
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