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net: Add decrypted field to skb

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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: Boris Pismenny <borisp@mellanox.com>
Signed-off-by: Ilya Lesokhin <ilyal@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Boris Pismenny 2018-07-13 14:33:35 +03:00 committed by David S. Miller
parent cc98419a57
commit 784abe24c9
2 changed files with 12 additions and 1 deletions
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7
include/linux/skbuff.h
View File

@ -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()

6
net/core/skbuff.c
View File

@ -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));