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Commit 1995876a authored by Steffen Klassert's avatar Steffen Klassert
Browse files

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: default avatarSteffen Klassert <steffen.klassert@secunet.com>
parent f991bb9d

net/xfrm/xfrm_input.c

+11 −1
Original line number Diff line number Diff line
@@ -21,6 +21,9 @@ static struct kmem_cache *secpath_cachep __read_mostly; 
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 @@ int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi, int encap_type) 


	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 @@ EXPORT_SYMBOL(xfrm_input_resume); 


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,