xfrm: Add a dummy network device for napi.
This patch adds a dummy network device so that we can
use gro_cells for IPsec GRO. With this, we handle IPsec
GRO with no impact on the generic networking code.
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
diff --git a/net/xfrm/xfrm_input.c b/net/xfrm/xfrm_input.c
index 6e3f025..3213fe8 100644
--- a/net/xfrm/xfrm_input.c
+++ b/net/xfrm/xfrm_input.c
@@ -21,6 +21,9 @@
static DEFINE_SPINLOCK(xfrm_input_afinfo_lock);
static struct xfrm_input_afinfo __rcu *xfrm_input_afinfo[NPROTO];
+static struct gro_cells gro_cells;
+static struct net_device xfrm_napi_dev;
+
int xfrm_input_register_afinfo(struct xfrm_input_afinfo *afinfo)
{
int err = 0;
@@ -371,7 +374,7 @@
if (decaps) {
skb_dst_drop(skb);
- netif_rx(skb);
+ gro_cells_receive(&gro_cells, skb);
return 0;
} else {
return x->inner_mode->afinfo->transport_finish(skb, async);
@@ -394,6 +397,13 @@
void __init xfrm_input_init(void)
{
+ int err;
+
+ init_dummy_netdev(&xfrm_napi_dev);
+ err = gro_cells_init(&gro_cells, &xfrm_napi_dev);
+ if (err)
+ gro_cells.cells = NULL;
+
secpath_cachep = kmem_cache_create("secpath_cache",
sizeof(struct sec_path),
0, SLAB_HWCACHE_ALIGN|SLAB_PANIC,