netdev - [next-queue 10/10] ixgbe: register ipsec offload with the xfrm subsystem

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Date:   Mon,  4 Dec 2017 21:35:16 -0800
From:   Shannon Nelson <shannon.nelson@...cle.com>
To:     intel-wired-lan@...ts.osuosl.org, jeffrey.t.kirsher@...el.com
Cc:     steffen.klassert@...unet.com, sowmini.varadhan@...cle.com,
        netdev@...r.kernel.org
Subject: [next-queue 10/10] ixgbe: register ipsec offload with the xfrm subsystem

With all the support code in place we can now link in the ipsec
offload operations and set the ESP feature flag for the XFRM
subsystem to see.

Signed-off-by: Shannon Nelson <shannon.nelson@...cle.com>
---
 drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c | 4 ++++
 drivers/net/ethernet/intel/ixgbe/ixgbe_main.c  | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
index d1220bf..0d5497b 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
@@ -884,6 +884,10 @@ void ixgbe_init_ipsec_offload(struct ixgbe_adapter *adapter)
 	ixgbe_ipsec_clear_hw_tables(adapter);
 	ixgbe_ipsec_stop_engine(adapter);
 
+	adapter->netdev->xfrmdev_ops = &ixgbe_xfrmdev_ops;
+	adapter->netdev->features |= NETIF_F_HW_ESP;
+	adapter->netdev->hw_enc_features |= NETIF_F_HW_ESP;
+
 	return;
 err:
 	if (ipsec) {
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index c857594..9231351 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -9799,6 +9799,10 @@ ixgbe_features_check(struct sk_buff *skb, struct net_device *dev,
 	if (skb->encapsulation && !(features & NETIF_F_TSO_MANGLEID))
 		features &= ~NETIF_F_TSO;
 
+	/* IPsec offload doesn't get along well with others *yet* */
+	if (skb->sp)
+		features &= ~(NETIF_F_TSO | NETIF_F_HW_CSUM_BIT);
+
 	return features;
 }
 
-- 
2.7.4