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Commit 784abe24 authored by Boris Pismenny's avatar Boris Pismenny Committed by David S. Miller
Browse files

net: Add decrypted field to skb 



The decrypted bit is propogated to cloned/copied skbs.
This will be used later by the inline crypto receive side offload
of tls.

Signed-off-by: default avatarBoris Pismenny <borisp@mellanox.com>
Signed-off-by: default avatarIlya Lesokhin <ilyal@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent cc98419a

include/linux/skbuff.h

+6 −1
Original line number Diff line number Diff line
@@ -630,6 +630,7 @@ typedef unsigned char *sk_buff_data_t; 
 *	@hash: the packet hash

 *	@queue_mapping: Queue mapping for multiqueue devices

 *	@xmit_more: More SKBs are pending for this queue

 *	@decrypted: Decrypted SKB

 *	@ndisc_nodetype: router type (from link layer)

 *	@ooo_okay: allow the mapping of a socket to a queue to be changed

 *	@l4_hash: indicate hash is a canonical 4-tuple hash over transport
@@ -736,7 +737,11 @@ struct sk_buff { 
				peeked:1,

				head_frag:1,

				xmit_more:1,

				__unused:1; /* one bit hole */

#ifdef CONFIG_TLS_DEVICE

				decrypted:1;

#else

				__unused:1;

#endif



	/* fields enclosed in headers_start/headers_end are copied

	 * using a single memcpy() in __copy_skb_header()

net/core/skbuff.c

+6 −0
Original line number Diff line number Diff line
@@ -805,6 +805,9 @@ static void __copy_skb_header(struct sk_buff *new, const struct sk_buff *old) 
	 * It is not yet because we do not want to have a 16 bit hole

	 */

	new->queue_mapping = old->queue_mapping;

#ifdef CONFIG_TLS_DEVICE

	new->decrypted = old->decrypted;

#endif



	memcpy(&new->headers_start, &old->headers_start,

	       offsetof(struct sk_buff, headers_end) -
@@ -865,6 +868,9 @@ static struct sk_buff *__skb_clone(struct sk_buff *n, struct sk_buff *skb) 
	C(head_frag);

	C(data);

	C(truesize);

#ifdef CONFIG_TLS_DEVICE

	C(decrypted);

#endif

	refcount_set(&n->users, 1);



	atomic_inc(&(skb_shinfo(skb)->dataref));