linux-kernel - [PATCH net-next 01/10] net: introduce the MACSEC netdev feature

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Message-Id: <20190123155638.13852-2-antoine.tenart@bootlin.com>
Date:   Wed, 23 Jan 2019 16:56:29 +0100
From:   Antoine Tenart <antoine.tenart@...tlin.com>
To:     davem@...emloft.net, sd@...asysnail.net, andrew@...n.ch,
        f.fainelli@...il.com, hkallweit1@...il.com
Cc:     Antoine Tenart <antoine.tenart@...tlin.com>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        thomas.petazzoni@...tlin.com, alexandre.belloni@...tlin.com,
        quentin.schulz@...tlin.com, allan.nielsen@...rochip.com
Subject: [PATCH net-next 01/10] net: introduce the MACSEC netdev feature

This patch introduce a new netdev feature, which will be used by drivers
to state they can perform MACsec transformations in hardware.

Signed-off-by: Antoine Tenart <antoine.tenart@...tlin.com>
---
 include/linux/netdev_features.h | 3 +++
 net/core/ethtool.c              | 1 +
 2 files changed, 4 insertions(+)

diff --git a/include/linux/netdev_features.h b/include/linux/netdev_features.h
index 2b2a6dce1630..f278da0f03cd 100644
--- a/include/linux/netdev_features.h
+++ b/include/linux/netdev_features.h
@@ -84,6 +84,8 @@ enum {
 	NETIF_F_GRO_HW_BIT,		/* Hardware Generic receive offload */
 	NETIF_F_HW_TLS_RECORD_BIT,	/* Offload TLS record */
 
+	NETIF_F_HW_MACSEC_BIT,		/* Offload MACsec operations */
+
 	/*
 	 * Add your fresh new feature above and remember to update
 	 * netdev_features_strings[] in net/core/ethtool.c and maybe
@@ -153,6 +155,7 @@ enum {
 #define NETIF_F_GSO_UDP_L4	__NETIF_F(GSO_UDP_L4)
 #define NETIF_F_HW_TLS_TX	__NETIF_F(HW_TLS_TX)
 #define NETIF_F_HW_TLS_RX	__NETIF_F(HW_TLS_RX)
+#define NETIF_F_HW_MACSEC	__NETIF_F(HW_MACSEC)
 
 #define for_each_netdev_feature(mask_addr, bit)	\
 	for_each_set_bit(bit, (unsigned long *)mask_addr, NETDEV_FEATURE_COUNT)
diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index 158264f7cfaf..c43f281db758 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -113,6 +113,7 @@ static const char netdev_features_strings[NETDEV_FEATURE_COUNT][ETH_GSTRING_LEN]
 	[NETIF_F_HW_TLS_RECORD_BIT] =	"tls-hw-record",
 	[NETIF_F_HW_TLS_TX_BIT] =	 "tls-hw-tx-offload",
 	[NETIF_F_HW_TLS_RX_BIT] =	 "tls-hw-rx-offload",
+	[NETIF_F_HW_MACSEC_BIT] =	 "macsec-hw-offload",
 };
 
 static const char
-- 
2.20.1