netdev - [RFC TLS Offload Support 04/15] net: Add TLS offload netdevice and socket support

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Message-Id: <1490707592-1430-5-git-send-email-aviadye@mellanox.com>
Date:   Tue, 28 Mar 2017 16:26:21 +0300
From:   Aviad Yehezkel <aviadye@...lanox.com>
To:     davem@...emloft.net, aviadye@...lanox.com, ilyal@...lanox.com,
        borisp@...lanox.com, davejwatson@...com, netdev@...r.kernel.org
Cc:     matanb@...lanox.com, liranl@...lanox.com, haggaie@...lanox.com,
        tom@...bertland.com, herbert@...dor.apana.org.au, nmav@...lts.org,
        fridolin.pokorny@...il.com, ilant@...lanox.com,
        kliteyn@...lanox.com, linux-crypto@...r.kernel.org,
        saeedm@...lanox.com, aviadye@....mellanox.co.il
Subject: [RFC TLS Offload Support 04/15] net: Add TLS offload netdevice and socket support

From: Ilya Lesokhin <ilyal@...lanox.com>

This patch add a new NDO to add and delete TLS contexts on netdevices.

Signed-off-by: Boris Pismenny <borisp@...lanox.com>
Signed-off-by: Ilya Lesokhin <ilyal@...lanox.com>
Signed-off-by: Aviad Yehezkel <aviadye@...lanox.com>
---
 include/linux/netdevice.h | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 51f9336..ce4760c 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -844,6 +844,25 @@ struct xfrmdev_ops {
 };
 #endif
 
+#if IS_ENABLED(CONFIG_TLS)
+enum tls_offload_ctx_dir {
+	TLS_OFFLOAD_CTX_DIR_RX,
+	TLS_OFFLOAD_CTX_DIR_TX,
+};
+
+struct tls_crypto_info;
+struct tls_offload_context;
+
+struct tlsdev_ops {
+	int (*tls_dev_add)(struct net_device *netdev, struct sock *sk,
+			enum tls_offload_ctx_dir direction,
+			struct tls_crypto_info *crypto_info,
+			struct tls_offload_context **ctx);
+	void (*tls_dev_del)(struct net_device *netdev, struct sock *sk,
+			enum tls_offload_ctx_dir direction);
+};
+#endif
+
 /*
  * This structure defines the management hooks for network devices.
  * The following hooks can be defined; unless noted otherwise, they are
@@ -1722,6 +1741,10 @@ struct net_device {
 	const struct xfrmdev_ops *xfrmdev_ops;
 #endif
 
+#if IS_ENABLED(CONFIG_TLS)
+	const struct tlsdev_ops *tlsdev_ops;
+#endif
+
 	const struct header_ops *header_ops;
 
 	unsigned int		flags;
-- 
2.7.4