A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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net: Add asynchronous callbacks for xfrm on layer 2.

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This patch implements asynchronous crypto callbacks
and a backlog handler that can be used when IPsec
is done at layer 2 in the TX path. It also extends
the skb validate functions so that we can update
the driver transmit return codes based on async
crypto operation or to indicate that we queued the
packet in a backlog queue.

Joint work with: Aviv Heller <[email protected]>

Signed-off-by: Steffen Klassert <[email protected]>
This commit is contained in:
Steffen Klassert 2017-12-20 10:41:36 +01:00
commit f53c723902
8 changed files with 175 additions and 36 deletions
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3
net/packet/af_packet.c
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@ -247,12 +247,13 @@ static int packet_direct_xmit(struct sk_buff *skb)
struct sk_buff *orig_skb = skb;
struct netdev_queue *txq;
int ret = NETDEV_TX_BUSY;
bool again = false;
if (unlikely(!netif_running(dev) ||
!netif_carrier_ok(dev)))
goto drop;
skb = validate_xmit_skb_list(skb, dev);
skb = validate_xmit_skb_list(skb, dev, &again);
if (skb != orig_skb)
goto drop;