From: Boris Pismenny <borisp@mellanox.com>
Date: Fri, 13 Jul 2018 14:33:35 +0300
Subject: net: Add decrypted field to skb
Patch-mainline: v4.19-rc1
Git-commit: 784abe24c903b093af04cf1a043140faa556cad7
References: bsc#1109837
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>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
include/linux/skbuff.h | 7 ++++++-
net/core/skbuff.c | 6 ++++++
2 files changed, 12 insertions(+), 1 deletion(-)
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -553,6 +553,7 @@ 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
@@ -653,7 +654,11 @@ 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
kmemcheck_bitfield_end(flags1);
/* fields enclosed in headers_start/headers_end are copied
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -840,6 +840,9 @@ static void __copy_skb_header(struct sk_
* 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) -
@@ -899,6 +902,9 @@ static struct sk_buff *__skb_clone(struc
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));