crypto/chcr: move nic TLS functionality to drivers/net

This patch moves complete nic tls offload (kTLS) code from crypto
directory to drivers/net/ethernet/chelsio/inline_crypto/ch_ktls
directory. nic TLS is made a separate ULD of cxgb4.

Signed-off-by: Rohit Maheshwari <rohitm@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

13 files changed, 2434 insertions, 58 deletions

diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
index abab82ad3f63..f55550d3a429 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
@@ -1201,6 +1201,9 @@ struct adapter {
 	struct cxgb4_tc_u32_table *tc_u32;
 	struct chcr_ktls chcr_ktls;
 	struct chcr_stats_debug chcr_stats;
+#if IS_ENABLED(CONFIG_CHELSIO_TLS_DEVICE)
+	struct ch_ktls_stats_debug ch_ktls_stats;
+#endif
 #if IS_ENABLED(CONFIG_CHELSIO_IPSEC_INLINE)
 	struct ch_ipsec_stats_debug ch_ipsec_stats;
 #endif
@@ -2177,7 +2180,7 @@ void cxgb4_enable_rx(struct adapter *adap, struct sge_rspq *q);
 void cxgb4_quiesce_rx(struct sge_rspq *q);
 int cxgb4_port_mirror_alloc(struct net_device *dev);
 void cxgb4_port_mirror_free(struct net_device *dev);
-#ifdef CONFIG_CHELSIO_TLS_DEVICE
+#if IS_ENABLED(CONFIG_CHELSIO_TLS_DEVICE)
 int cxgb4_set_ktls_feature(struct adapter *adap, bool enable);
 #endif
 #endif /* __CXGB4_H__ */
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
index 42112e8ad687..5491a41fd1be 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
@@ -3553,44 +3553,43 @@ static int chcr_stats_show(struct seq_file *seq, void *v)
 	seq_printf(seq, "IPSec PDU: %10u\n",
 		   atomic_read(&adap->ch_ipsec_stats.ipsec_cnt));
 #endif
-#ifdef CONFIG_CHELSIO_TLS_DEVICE
+#if IS_ENABLED(CONFIG_CHELSIO_TLS_DEVICE)
 	seq_puts(seq, "\nChelsio KTLS Crypto Accelerator Stats\n");
 	seq_printf(seq, "Tx TLS offload refcount:          %20u\n",
 		   refcount_read(&adap->chcr_ktls.ktls_refcount));
 	seq_printf(seq, "Tx HW offload contexts added:     %20llu\n",
-		   atomic64_read(&adap->chcr_stats.ktls_tx_ctx));
+		   atomic64_read(&adap->ch_ktls_stats.ktls_tx_ctx));
 	seq_printf(seq, "Tx connection created:            %20llu\n",
-		   atomic64_read(&adap->chcr_stats.ktls_tx_connection_open));
+		   atomic64_read(&adap->ch_ktls_stats.ktls_tx_connection_open));
 	seq_printf(seq, "Tx connection failed:             %20llu\n",
-		   atomic64_read(&adap->chcr_stats.ktls_tx_connection_fail));
+		   atomic64_read(&adap->ch_ktls_stats.ktls_tx_connection_fail));
 	seq_printf(seq, "Tx connection closed:             %20llu\n",
-		   atomic64_read(&adap->chcr_stats.ktls_tx_connection_close));
+		   atomic64_read(&adap->ch_ktls_stats.ktls_tx_connection_close));
 	seq_printf(seq, "Packets passed for encryption :   %20llu\n",
-		   atomic64_read(&adap->chcr_stats.ktls_tx_encrypted_packets));
+		   atomic64_read(&adap->ch_ktls_stats.ktls_tx_encrypted_packets));
 	seq_printf(seq, "Bytes passed for encryption :     %20llu\n",
-		   atomic64_read(&adap->chcr_stats.ktls_tx_encrypted_bytes));
+		   atomic64_read(&adap->ch_ktls_stats.ktls_tx_encrypted_bytes));
 	seq_printf(seq, "Tx records send:                  %20llu\n",
-		   atomic64_read(&adap->chcr_stats.ktls_tx_send_records));
+		   atomic64_read(&adap->ch_ktls_stats.ktls_tx_send_records));
 	seq_printf(seq, "Tx partial start of records:      %20llu\n",
-		   atomic64_read(&adap->chcr_stats.ktls_tx_start_pkts));
+		   atomic64_read(&adap->ch_ktls_stats.ktls_tx_start_pkts));
 	seq_printf(seq, "Tx partial middle of records:     %20llu\n",
-		   atomic64_read(&adap->chcr_stats.ktls_tx_middle_pkts));
+		   atomic64_read(&adap->ch_ktls_stats.ktls_tx_middle_pkts));
 	seq_printf(seq, "Tx partial end of record:         %20llu\n",
-		   atomic64_read(&adap->chcr_stats.ktls_tx_end_pkts));
+		   atomic64_read(&adap->ch_ktls_stats.ktls_tx_end_pkts));
 	seq_printf(seq, "Tx complete records:              %20llu\n",
-		   atomic64_read(&adap->chcr_stats.ktls_tx_complete_pkts));
+		   atomic64_read(&adap->ch_ktls_stats.ktls_tx_complete_pkts));
 	seq_printf(seq, "TX trim pkts :                    %20llu\n",
-		   atomic64_read(&adap->chcr_stats.ktls_tx_trimmed_pkts));
+		   atomic64_read(&adap->ch_ktls_stats.ktls_tx_trimmed_pkts));
 	seq_printf(seq, "Tx out of order packets:          %20llu\n",
-		   atomic64_read(&adap->chcr_stats.ktls_tx_ooo));
+		   atomic64_read(&adap->ch_ktls_stats.ktls_tx_ooo));
 	seq_printf(seq, "Tx drop pkts before HW offload:   %20llu\n",
-		   atomic64_read(&adap->chcr_stats.ktls_tx_skip_no_sync_data));
+		   atomic64_read(&adap->ch_ktls_stats.ktls_tx_skip_no_sync_data));
 	seq_printf(seq, "Tx drop not synced packets:       %20llu\n",
-		   atomic64_read(&adap->chcr_stats.ktls_tx_drop_no_sync_data));
+		   atomic64_read(&adap->ch_ktls_stats.ktls_tx_drop_no_sync_data));
 	seq_printf(seq, "Tx drop bypass req:               %20llu\n",
-		   atomic64_read(&adap->chcr_stats.ktls_tx_drop_bypass_req));
+		   atomic64_read(&adap->ch_ktls_stats.ktls_tx_drop_bypass_req));
 #endif
-
 	return 0;
 }
 DEFINE_SHOW_ATTRIBUTE(chcr_stats);
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_ethtool.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_ethtool.c
index 9f3173f86eed..8c6c9bedcba1 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_ethtool.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_ethtool.c
@@ -125,7 +125,7 @@ static char adapter_stats_strings[][ETH_GSTRING_LEN] = {
 	"db_empty               ",
 	"write_coal_success     ",
 	"write_coal_fail        ",
-#ifdef CONFIG_CHELSIO_TLS_DEVICE
+#if  IS_ENABLED(CONFIG_CHELSIO_TLS_DEVICE)
 	"tx_tls_encrypted_packets",
 	"tx_tls_encrypted_bytes  ",
 	"tx_tls_ctx              ",
@@ -265,7 +265,7 @@ struct adapter_stats {
 	u64 db_empty;
 	u64 wc_success;
 	u64 wc_fail;
-#ifdef CONFIG_CHELSIO_TLS_DEVICE
+#if IS_ENABLED(CONFIG_CHELSIO_TLS_DEVICE)
 	u64 tx_tls_encrypted_packets;
 	u64 tx_tls_encrypted_bytes;
 	u64 tx_tls_ctx;
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
index 27530c0e2d14..a952fe198eb9 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
@@ -66,7 +66,7 @@
 #include <linux/crash_dump.h>
 #include <net/udp_tunnel.h>
 #include <net/xfrm.h>
-#if defined(CONFIG_CHELSIO_TLS_DEVICE)
+#if IS_ENABLED(CONFIG_CHELSIO_TLS_DEVICE)
 #include <net/tls.h>
 #endif
 
@@ -6396,21 +6396,21 @@ static int cxgb4_iov_configure(struct pci_dev *pdev, int num_vfs)
 }
 #endif /* CONFIG_PCI_IOV */
 
-#if defined(CONFIG_CHELSIO_TLS_DEVICE) || IS_ENABLED(CONFIG_CHELSIO_IPSEC_INLINE)
+#if IS_ENABLED(CONFIG_CHELSIO_TLS_DEVICE) || IS_ENABLED(CONFIG_CHELSIO_IPSEC_INLINE)
 
 static int chcr_offload_state(struct adapter *adap,
 			      enum cxgb4_netdev_tls_ops op_val)
 {
 	switch (op_val) {
-#if defined(CONFIG_CHELSIO_TLS_DEVICE)
+#if IS_ENABLED(CONFIG_CHELSIO_TLS_DEVICE)
 	case CXGB4_TLSDEV_OPS:
-		if (!adap->uld[CXGB4_ULD_CRYPTO].handle) {
-			dev_dbg(adap->pdev_dev, "chcr driver is not loaded\n");
+		if (!adap->uld[CXGB4_ULD_KTLS].handle) {
+			dev_dbg(adap->pdev_dev, "ch_ktls driver is not loaded\n");
 			return -EOPNOTSUPP;
 		}
-		if (!adap->uld[CXGB4_ULD_CRYPTO].tlsdev_ops) {
+		if (!adap->uld[CXGB4_ULD_KTLS].tlsdev_ops) {
 			dev_dbg(adap->pdev_dev,
-				"chcr driver has no registered tlsdev_ops\n");
+				"ch_ktls driver has no registered tlsdev_ops\n");
 			return -EOPNOTSUPP;
 		}
 		break;
@@ -6439,7 +6439,7 @@ static int chcr_offload_state(struct adapter *adap,
 
 #endif /* CONFIG_CHELSIO_TLS_DEVICE || CONFIG_CHELSIO_IPSEC_INLINE */
 
-#if defined(CONFIG_CHELSIO_TLS_DEVICE)
+#if IS_ENABLED(CONFIG_CHELSIO_TLS_DEVICE)
 
 static int cxgb4_ktls_dev_add(struct net_device *netdev, struct sock *sk,
 			      enum tls_offload_ctx_dir direction,
@@ -6458,10 +6458,10 @@ static int cxgb4_ktls_dev_add(struct net_device *netdev, struct sock *sk,
 	if (ret)
 		goto out_unlock;
 
-	ret = adap->uld[CXGB4_ULD_CRYPTO].tlsdev_ops->tls_dev_add(netdev, sk,
-								  direction,
-								  crypto_info,
-								  tcp_sn);
+	ret = adap->uld[CXGB4_ULD_KTLS].tlsdev_ops->tls_dev_add(netdev, sk,
+								direction,
+								crypto_info,
+								tcp_sn);
 	/* if there is a failure, clear the refcount */
 	if (ret)
 		cxgb4_set_ktls_feature(adap,
@@ -6481,14 +6481,20 @@ static void cxgb4_ktls_dev_del(struct net_device *netdev,
 	if (chcr_offload_state(adap, CXGB4_TLSDEV_OPS))
 		goto out_unlock;
 
-	adap->uld[CXGB4_ULD_CRYPTO].tlsdev_ops->tls_dev_del(netdev, tls_ctx,
-							    direction);
+	adap->uld[CXGB4_ULD_KTLS].tlsdev_ops->tls_dev_del(netdev, tls_ctx,
+							  direction);
 	cxgb4_set_ktls_feature(adap, FW_PARAMS_PARAM_DEV_KTLS_HW_DISABLE);
 
 out_unlock:
 	mutex_unlock(&uld_mutex);
 }
 
+static const struct tlsdev_ops cxgb4_ktls_ops = {
+	.tls_dev_add = cxgb4_ktls_dev_add,
+	.tls_dev_del = cxgb4_ktls_dev_del,
+};
+#endif /* CONFIG_CHELSIO_TLS_DEVICE */
+
 #if IS_ENABLED(CONFIG_CHELSIO_IPSEC_INLINE)
 
 static int cxgb4_xfrm_add_state(struct xfrm_state *x)
@@ -6597,12 +6603,6 @@ static const struct xfrmdev_ops cxgb4_xfrmdev_ops = {
 
 #endif /* CONFIG_CHELSIO_IPSEC_INLINE */
 
-static const struct tlsdev_ops cxgb4_ktls_ops = {
-	.tls_dev_add = cxgb4_ktls_dev_add,
-	.tls_dev_del = cxgb4_ktls_dev_del,
-};
-#endif /* CONFIG_CHELSIO_TLS_DEVICE */
-
 static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 {
 	struct net_device *netdev;
@@ -6855,7 +6855,7 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 			netdev->hw_features |= NETIF_F_HIGHDMA;
 		netdev->features |= netdev->hw_features;
 		netdev->vlan_features = netdev->features & VLAN_FEAT;
-#if defined(CONFIG_CHELSIO_TLS_DEVICE)
+#if IS_ENABLED(CONFIG_CHELSIO_TLS_DEVICE)
 		if (pi->adapter->params.crypto & FW_CAPS_CONFIG_TLS_HW) {
 			netdev->hw_features |= NETIF_F_HW_TLS_TX;
 			netdev->tlsdev_ops = &cxgb4_ktls_ops;
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.c
index 08439e215efe..b154190e1ee2 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.c
@@ -663,7 +663,7 @@ static int uld_attach(struct adapter *adap, unsigned int uld)
 	return 0;
 }
 
-#ifdef CONFIG_CHELSIO_TLS_DEVICE
+#if IS_ENABLED(CONFIG_CHELSIO_TLS_DEVICE)
 static bool cxgb4_uld_in_use(struct adapter *adap)
 {
 	const struct tid_info *t = &adap->tids;
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h
index 421ae87aa7db..ea2fabbdd934 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h
@@ -40,6 +40,7 @@
 #include <linux/skbuff.h>
 #include <linux/inetdevice.h>
 #include <linux/atomic.h>
+#include <net/tls.h>
 #include "cxgb4.h"
 
 #define MAX_ULD_QSETS 16
@@ -304,6 +305,7 @@ enum cxgb4_uld {
 	CXGB4_ULD_CRYPTO,
 	CXGB4_ULD_IPSEC,
 	CXGB4_ULD_TLS,
+	CXGB4_ULD_KTLS,
 	CXGB4_ULD_MAX
 };
 
@@ -362,17 +364,8 @@ struct cxgb4_virt_res {                      /* virtualized HW resources */
 	struct cxgb4_range ppod_edram;
 };
 
-struct chcr_stats_debug {
-	atomic_t cipher_rqst;
-	atomic_t digest_rqst;
-	atomic_t aead_rqst;
-	atomic_t complete;
-	atomic_t error;
-	atomic_t fallback;
-	atomic_t tls_pdu_tx;
-	atomic_t tls_pdu_rx;
-	atomic_t tls_key;
-#ifdef CONFIG_CHELSIO_TLS_DEVICE
+#if IS_ENABLED(CONFIG_CHELSIO_TLS_DEVICE)
+struct ch_ktls_stats_debug {
 	atomic64_t ktls_tx_connection_open;
 	atomic64_t ktls_tx_connection_fail;
 	atomic64_t ktls_tx_connection_close;
@@ -390,8 +383,19 @@ struct chcr_stats_debug {
 	atomic64_t ktls_tx_skip_no_sync_data;
 	atomic64_t ktls_tx_drop_no_sync_data;
 	atomic64_t ktls_tx_drop_bypass_req;
-
+};
 #endif
+
+struct chcr_stats_debug {
+	atomic_t cipher_rqst;
+	atomic_t digest_rqst;
+	atomic_t aead_rqst;
+	atomic_t complete;
+	atomic_t error;
+	atomic_t fallback;
+	atomic_t tls_pdu_tx;
+	atomic_t tls_pdu_rx;
+	atomic_t tls_key;
 };
 
 #if IS_ENABLED(CONFIG_CHELSIO_IPSEC_INLINE)
@@ -476,7 +480,7 @@ struct cxgb4_uld_info {
 			      struct napi_struct *napi);
 	void (*lro_flush)(struct t4_lro_mgr *);
 	int (*tx_handler)(struct sk_buff *skb, struct net_device *dev);
-#if IS_ENABLED(CONFIG_TLS_DEVICE)
+#if IS_ENABLED(CONFIG_CHELSIO_TLS_DEVICE)
 	const struct tlsdev_ops *tlsdev_ops;
 #endif
 #if IS_ENABLED(CONFIG_XFRM_OFFLOAD)
diff --git a/drivers/net/ethernet/chelsio/cxgb4/sge.c b/drivers/net/ethernet/chelsio/cxgb4/sge.c
index fddd70ee6436..437c054ef749 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/sge.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/sge.c
@@ -1421,9 +1421,9 @@ static netdev_tx_t cxgb4_eth_xmit(struct sk_buff *skb, struct net_device *dev)
 		return adap->uld[CXGB4_ULD_IPSEC].tx_handler(skb, dev);
 #endif /* CHELSIO_IPSEC_INLINE */
 
-#ifdef CONFIG_CHELSIO_TLS_DEVICE
+#if IS_ENABLED(CONFIG_CHELSIO_TLS_DEVICE)
 	if (skb->decrypted)
-		return adap->uld[CXGB4_ULD_CRYPTO].tx_handler(skb, dev);
+		return adap->uld[CXGB4_ULD_KTLS].tx_handler(skb, dev);
 #endif /* CHELSIO_TLS_DEVICE */
 
 	qidx = skb_get_queue_mapping(skb);
diff --git a/drivers/net/ethernet/chelsio/inline_crypto/Kconfig b/drivers/net/ethernet/chelsio/inline_crypto/Kconfig
index be70b59b6f80..1923e713b53a 100644
--- a/drivers/net/ethernet/chelsio/inline_crypto/Kconfig
+++ b/drivers/net/ethernet/chelsio/inline_crypto/Kconfig
@@ -34,4 +34,17 @@ config CHELSIO_IPSEC_INLINE
         To compile this driver as a module, choose M here: the module
         will be called ch_ipsec.
 
+config CHELSIO_TLS_DEVICE
+        tristate "Chelsio Inline KTLS Offload"
+        depends on CHELSIO_T4
+        depends on TLS
+        depends on TLS_DEVICE
+        help
+          This flag enables support for kernel tls offload over Chelsio T6
+          crypto accelerator. CONFIG_CHELSIO_TLS_DEVICE flag can be enabled
+          only if CONFIG_TLS and CONFIG_TLS_DEVICE flags are enabled.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called ch_ktls.
+
 endif # CHELSIO_INLINE_CRYPTO
diff --git a/drivers/net/ethernet/chelsio/inline_crypto/Makefile b/drivers/net/ethernet/chelsio/inline_crypto/Makefile
index 9a86ee8f1f38..27e6d7e2f1eb 100644
--- a/drivers/net/ethernet/chelsio/inline_crypto/Makefile
+++ b/drivers/net/ethernet/chelsio/inline_crypto/Makefile
@@ -1,3 +1,4 @@
 # SPDX-License-Identifier: GPL-2.0-only
 obj-$(CONFIG_CRYPTO_DEV_CHELSIO_TLS) += chtls/
 obj-$(CONFIG_CHELSIO_IPSEC_INLINE) += ch_ipsec/
+obj-$(CONFIG_CHELSIO_TLS_DEVICE) += ch_ktls/
diff --git a/drivers/net/ethernet/chelsio/inline_crypto/ch_ktls/Makefile b/drivers/net/ethernet/chelsio/inline_crypto/ch_ktls/Makefile
new file mode 100644
index 000000000000..5e7d161c3199
--- /dev/null
+++ b/drivers/net/ethernet/chelsio/inline_crypto/ch_ktls/Makefile
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+ccflags-y := -I $(srctree)/drivers/net/ethernet/chelsio/cxgb4
+
+obj-$(CONFIG_CHELSIO_TLS_DEVICE) += ch_ktls.o
+ch_ktls-objs := chcr_ktls.o
diff --git a/drivers/net/ethernet/chelsio/inline_crypto/ch_ktls/chcr_common.h b/drivers/net/ethernet/chelsio/inline_crypto/ch_ktls/chcr_common.h
new file mode 100644
index 000000000000..38319f4c3121
--- /dev/null
+++ b/drivers/net/ethernet/chelsio/inline_crypto/ch_ktls/chcr_common.h
@@ -0,0 +1,111 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Copyright (C) 2020 Chelsio Communications.  All rights reserved. */
+
+#ifndef __CHCR_COMMON_H__
+#define __CHCR_COMMON_H__
+
+#include "cxgb4.h"
+
+#define CHCR_MAX_SALT                      4
+#define CHCR_KEYCTX_MAC_KEY_SIZE_128       0
+#define CHCR_KEYCTX_CIPHER_KEY_SIZE_128    0
+#define CHCR_SCMD_CIPHER_MODE_AES_GCM      2
+#define CHCR_SCMD_CIPHER_MODE_AES_CTR      3
+#define CHCR_CPL_TX_SEC_PDU_LEN_64BIT      2
+#define CHCR_SCMD_SEQ_NO_CTRL_64BIT        3
+#define CHCR_SCMD_PROTO_VERSION_TLS        0
+#define CHCR_SCMD_PROTO_VERSION_GENERIC    4
+#define CHCR_SCMD_AUTH_MODE_GHASH          4
+#define AES_BLOCK_LEN                      16
+
+struct ktls_key_ctx {
+	__be32 ctx_hdr;
+	u8 salt[CHCR_MAX_SALT];
+	__be64 iv_to_auth;
+	unsigned char key[TLS_CIPHER_AES_GCM_128_KEY_SIZE +
+			  TLS_CIPHER_AES_GCM_256_TAG_SIZE];
+};
+
+/* Crypto key context */
+#define KEY_CONTEXT_CTX_LEN_S           24
+#define KEY_CONTEXT_CTX_LEN_V(x)        ((x) << KEY_CONTEXT_CTX_LEN_S)
+
+#define KEY_CONTEXT_SALT_PRESENT_S      10
+#define KEY_CONTEXT_SALT_PRESENT_V(x)   ((x) << KEY_CONTEXT_SALT_PRESENT_S)
+#define KEY_CONTEXT_SALT_PRESENT_F      KEY_CONTEXT_SALT_PRESENT_V(1U)
+
+#define KEY_CONTEXT_VALID_S     0
+#define KEY_CONTEXT_VALID_V(x)  ((x) << KEY_CONTEXT_VALID_S)
+#define KEY_CONTEXT_VALID_F     KEY_CONTEXT_VALID_V(1U)
+
+#define KEY_CONTEXT_CK_SIZE_S           6
+#define KEY_CONTEXT_CK_SIZE_V(x)        ((x) << KEY_CONTEXT_CK_SIZE_S)
+
+#define KEY_CONTEXT_MK_SIZE_S           2
+#define KEY_CONTEXT_MK_SIZE_V(x)        ((x) << KEY_CONTEXT_MK_SIZE_S)
+
+#define KEY_CONTEXT_OPAD_PRESENT_S      11
+#define KEY_CONTEXT_OPAD_PRESENT_V(x)   ((x) << KEY_CONTEXT_OPAD_PRESENT_S)
+#define KEY_CONTEXT_OPAD_PRESENT_F      KEY_CONTEXT_OPAD_PRESENT_V(1U)
+
+#define FILL_KEY_CTX_HDR(ck_size, mk_size, ctx_len) \
+		htonl(KEY_CONTEXT_MK_SIZE_V(mk_size) | \
+		      KEY_CONTEXT_CK_SIZE_V(ck_size) | \
+		      KEY_CONTEXT_VALID_F | \
+		      KEY_CONTEXT_SALT_PRESENT_F | \
+		      KEY_CONTEXT_CTX_LEN_V((ctx_len)))
+
+static inline void *chcr_copy_to_txd(const void *src, const struct sge_txq *q,
+				     void *pos, int length)
+{
+	int left = (void *)q->stat - pos;
+	u64 *p;
+
+	if (likely(length <= left)) {
+		memcpy(pos, src, length);
+		pos += length;
+	} else {
+		memcpy(pos, src, left);
+		memcpy(q->desc, src + left, length - left);
+		pos = (void *)q->desc + (length - left);
+	}
+	/* 0-pad to multiple of 16 */
+	p = PTR_ALIGN(pos, 8);
+	if ((uintptr_t)p & 8) {
+		*p = 0;
+		return p + 1;
+	}
+	return p;
+}
+
+static inline unsigned int chcr_txq_avail(const struct sge_txq *q)
+{
+	return q->size - 1 - q->in_use;
+}
+
+static inline void chcr_txq_advance(struct sge_txq *q, unsigned int n)
+{
+	q->in_use += n;
+	q->pidx += n;
+	if (q->pidx >= q->size)
+		q->pidx -= q->size;
+}
+
+static inline void chcr_eth_txq_stop(struct sge_eth_txq *q)
+{
+	netif_tx_stop_queue(q->txq);
+	q->q.stops++;
+}
+
+static inline unsigned int chcr_sgl_len(unsigned int n)
+{
+	n--;
+	return (3 * n) / 2 + (n & 1) + 2;
+}
+
+static inline unsigned int chcr_flits_to_desc(unsigned int n)
+{
+	WARN_ON(n > SGE_MAX_WR_LEN / 8);
+	return DIV_ROUND_UP(n, 8);
+}
+#endif /* __CHCR_COMMON_H__ */
diff --git a/drivers/net/ethernet/chelsio/inline_crypto/ch_ktls/chcr_ktls.c b/drivers/net/ethernet/chelsio/inline_crypto/ch_ktls/chcr_ktls.c
new file mode 100644
index 000000000000..4609f1f78426
--- /dev/null
+++ b/drivers/net/ethernet/chelsio/inline_crypto/ch_ktls/chcr_ktls.c
@@ -0,0 +1,2139 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Copyright (C) 2020 Chelsio Communications.  All rights reserved. */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/skbuff.h>
+#include <linux/module.h>
+#include <linux/highmem.h>
+#include <linux/ip.h>
+#include <net/ipv6.h>
+#include <linux/netdevice.h>
+#include "chcr_ktls.h"
+
+static LIST_HEAD(uld_ctx_list);
+static DEFINE_MUTEX(dev_mutex);
+
+static int chcr_init_tcb_fields(struct chcr_ktls_info *tx_info);
+/*
+ * chcr_ktls_save_keys: calculate and save crypto keys.
+ * @tx_info - driver specific tls info.
+ * @crypto_info - tls crypto information.
+ * @direction - TX/RX direction.
+ * return - SUCCESS/FAILURE.
+ */
+static int chcr_ktls_save_keys(struct chcr_ktls_info *tx_info,
+			       struct tls_crypto_info *crypto_info,
+			       enum tls_offload_ctx_dir direction)
+{
+	int ck_size, key_ctx_size, mac_key_size, keylen, ghash_size, ret;
+	unsigned char ghash_h[TLS_CIPHER_AES_GCM_256_TAG_SIZE];
+	struct tls12_crypto_info_aes_gcm_128 *info_128_gcm;
+	struct ktls_key_ctx *kctx = &tx_info->key_ctx;
+	struct crypto_cipher *cipher;
+	unsigned char *key, *salt;
+
+	switch (crypto_info->cipher_type) {
+	case TLS_CIPHER_AES_GCM_128:
+		info_128_gcm =
+			(struct tls12_crypto_info_aes_gcm_128 *)crypto_info;
+		keylen = TLS_CIPHER_AES_GCM_128_KEY_SIZE;
+		ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
+		tx_info->salt_size = TLS_CIPHER_AES_GCM_128_SALT_SIZE;
+		mac_key_size = CHCR_KEYCTX_MAC_KEY_SIZE_128;
+		tx_info->iv_size = TLS_CIPHER_AES_GCM_128_IV_SIZE;
+		tx_info->iv = be64_to_cpu(*(__be64 *)info_128_gcm->iv);
+
+		ghash_size = TLS_CIPHER_AES_GCM_128_TAG_SIZE;
+		key = info_128_gcm->key;
+		salt = info_128_gcm->salt;
+		tx_info->record_no = *(u64 *)info_128_gcm->rec_seq;
+
+		/* The SCMD fields used when encrypting a full TLS
+		 * record. Its a one time calculation till the
+		 * connection exists.
+		 */
+		tx_info->scmd0_seqno_numivs =
+			SCMD_SEQ_NO_CTRL_V(CHCR_SCMD_SEQ_NO_CTRL_64BIT) |
+			SCMD_CIPH_AUTH_SEQ_CTRL_F |
+			SCMD_PROTO_VERSION_V(CHCR_SCMD_PROTO_VERSION_TLS) |
+			SCMD_CIPH_MODE_V(CHCR_SCMD_CIPHER_MODE_AES_GCM) |
+			SCMD_AUTH_MODE_V(CHCR_SCMD_AUTH_MODE_GHASH) |
+			SCMD_IV_SIZE_V(TLS_CIPHER_AES_GCM_128_IV_SIZE >> 1) |
+			SCMD_NUM_IVS_V(1);
+
+		/* keys will be sent inline. */
+		tx_info->scmd0_ivgen_hdrlen = SCMD_KEY_CTX_INLINE_F;
+
+		/* The SCMD fields used when encrypting a partial TLS
+		 * record (no trailer and possibly a truncated payload).
+		 */
+		tx_info->scmd0_short_seqno_numivs =
+			SCMD_CIPH_AUTH_SEQ_CTRL_F |
+			SCMD_PROTO_VERSION_V(CHCR_SCMD_PROTO_VERSION_GENERIC) |
+			SCMD_CIPH_MODE_V(CHCR_SCMD_CIPHER_MODE_AES_CTR) |
+			SCMD_IV_SIZE_V(AES_BLOCK_LEN >> 1);
+
+		tx_info->scmd0_short_ivgen_hdrlen =
+			tx_info->scmd0_ivgen_hdrlen | SCMD_AADIVDROP_F;
+
+		break;
+
+	default:
+		pr_err("GCM: cipher type 0x%x not supported\n",
+		       crypto_info->cipher_type);
+		ret = -EINVAL;
+		goto out;
+	}
+
+	key_ctx_size = CHCR_KTLS_KEY_CTX_LEN +
+		       roundup(keylen, 16) + ghash_size;
+	/* Calculate the H = CIPH(K, 0 repeated 16 times).
+	 * It will go in key context
+	 */
+	cipher = crypto_alloc_cipher("aes", 0, 0);
+	if (IS_ERR(cipher)) {
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	ret = crypto_cipher_setkey(cipher, key, keylen);
+	if (ret)
+		goto out1;
+
+	memset(ghash_h, 0, ghash_size);
+	crypto_cipher_encrypt_one(cipher, ghash_h, ghash_h);
+
+	/* fill the Key context */
+	if (direction == TLS_OFFLOAD_CTX_DIR_TX) {
+		kctx->ctx_hdr = FILL_KEY_CTX_HDR(ck_size,
+						 mac_key_size,
+						 key_ctx_size >> 4);
+	} else {
+		ret = -EINVAL;
+		goto out1;
+	}
+
+	memcpy(kctx->salt, salt, tx_info->salt_size);
+	memcpy(kctx->key, key, keylen);
+	memcpy(kctx->key + keylen, ghash_h, ghash_size);
+	tx_info->key_ctx_len = key_ctx_size;
+
+out1:
+	crypto_free_cipher(cipher);
+out:
+	return ret;
+}
+
+static int chcr_ktls_update_connection_state(struct chcr_ktls_info *tx_info,
+					     int new_state)
+{
+	/* This function can be called from both rx (interrupt context) and tx
+	 * queue contexts.
+	 */
+	spin_lock_bh(&tx_info->lock);
+	switch (tx_info->connection_state) {
+	case KTLS_CONN_CLOSED:
+		tx_info->connection_state = new_state;
+		break;
+
+	case KTLS_CONN_ACT_OPEN_REQ:
+		/* only go forward if state is greater than current state. */
+		if (new_state <= tx_info->connection_state)
+			break;
+		/* update to the next state and also initialize TCB */
+		tx_info->connection_state = new_state;
+		fallthrough;
+	case KTLS_CONN_ACT_OPEN_RPL:
+		/* if we are stuck in this state, means tcb init might not
+		 * received by HW, try sending it again.
+		 */
+		if (!chcr_init_tcb_fields(tx_info))
+			tx_info->connection_state = KTLS_CONN_SET_TCB_REQ;
+		break;
+
+	case KTLS_CONN_SET_TCB_REQ:
+		/* only go forward if state is greater than current state. */
+		if (new_state <= tx_info->connection_state)
+			break;
+		/* update to the next state and check if l2t_state is valid  */
+		tx_info->connection_state = new_state;
+		fallthrough;
+	case KTLS_CONN_SET_TCB_RPL:
+		/* Check if l2t state is valid, then move to ready state. */
+		if (cxgb4_check_l2t_valid(tx_info->l2te)) {
+			tx_info->connection_state = KTLS_CONN_TX_READY;
+			atomic64_inc(&tx_info->adap->ch_ktls_stats.ktls_tx_ctx);
+		}
+		break;
+
+	case KTLS_CONN_TX_READY:
+		/* nothing to be done here */
+		break;
+
+	default:
+		pr_err("unknown KTLS connection state\n");
+		break;
+	}
+	spin_unlock_bh(&tx_info->lock);
+
+	return tx_info->connection_state;
+}
+/*
+ * chcr_ktls_act_open_req: creates TCB entry for ipv4 connection.
+ * @sk - tcp socket.
+ * @tx_info - driver specific tls info.
+ * @atid - connection active tid.
+ * return - send success/failure.
+ */
+static int chcr_ktls_act_open_req(struct sock *sk,
+				  struct chcr_ktls_info *tx_info,
+				  int atid)
+{
+	struct inet_sock *inet = inet_sk(sk);
+	struct cpl_t6_act_open_req *cpl6;
+	struct cpl_act_open_req *cpl;
+	struct sk_buff *skb;
+	unsigned int len;
+	int qid_atid;
+	u64 options;
+
+	len = sizeof(*cpl6);
+	skb = alloc_skb(len, GFP_KERNEL);
+	if (unlikely(!skb))
+		return -ENOMEM;
+	/* mark it a control pkt */
+	set_wr_txq(skb, CPL_PRIORITY_CONTROL, tx_info->port_id);
+
+	cpl6 = __skb_put_zero(skb, len);
+	cpl = (struct cpl_act_open_req *)cpl6;
+	INIT_TP_WR(cpl6, 0);
+	qid_atid = TID_QID_V(tx_info->rx_qid) |
+		   TID_TID_V(atid);
+	OPCODE_TID(cpl) = htonl(MK_OPCODE_TID(CPL_ACT_OPEN_REQ, qid_atid));
+	cpl->local_port = inet->inet_sport;
+	cpl->peer_port = inet->inet_dport;
+	cpl->local_ip = inet->inet_rcv_saddr;
+	cpl->peer_ip = inet->inet_daddr;
+
+	/* fill first 64 bit option field. */
+	options = TCAM_BYPASS_F | ULP_MODE_V(ULP_MODE_NONE) | NON_OFFLOAD_F |
+		  SMAC_SEL_V(tx_info->smt_idx) | TX_CHAN_V(tx_info->tx_chan);
+	cpl->opt0 = cpu_to_be64(options);
+
+	/* next 64 bit option field. */
+	options =
+		TX_QUEUE_V(tx_info->adap->params.tp.tx_modq[tx_info->tx_chan]);
+	cpl->opt2 = htonl(options);
+
+	return cxgb4_l2t_send(tx_info->netdev, skb, tx_info->l2te);
+}
+
+#if IS_ENABLED(CONFIG_IPV6)
+/*
+ * chcr_ktls_act_open_req6: creates TCB entry for ipv6 connection.
+ * @sk - tcp socket.
+ * @tx_info - driver specific tls info.
+ * @atid - connection active tid.
+ * return - send success/failure.
+ */
+static int chcr_ktls_act_open_req6(struct sock *sk,
+				   struct chcr_ktls_info *tx_info,
+				   int atid)
+{
+	struct inet_sock *inet = inet_sk(sk);
+	struct cpl_t6_act_open_req6 *cpl6;
+	struct cpl_act_open_req6 *cpl;
+	struct sk_buff *skb;
+	unsigned int len;
+	int qid_atid;
+	u64 options;
+
+	len = sizeof(*cpl6);
+	skb = alloc_skb(len, GFP_KERNEL);
+	if (unlikely(!skb))
+		return -ENOMEM;
+	/* mark it a control pkt */
+	set_wr_txq(skb, CPL_PRIORITY_CONTROL, tx_info->port_id);
+
+	cpl6 = __skb_put_zero(skb, len);
+	cpl = (struct cpl_act_open_req6 *)cpl6;
+	INIT_TP_WR(cpl6, 0);
+	qid_atid = TID_QID_V(tx_info->rx_qid) | TID_TID_V(atid);
+	OPCODE_TID(cpl) = htonl(MK_OPCODE_TID(CPL_ACT_OPEN_REQ6, qid_atid));
+	cpl->local_port = inet->inet_sport;
+	cpl->peer_port = inet->inet_dport;
+	cpl->local_ip_hi = *(__be64 *)&sk->sk_v6_rcv_saddr.in6_u.u6_addr8[0];
+	cpl->local_ip_lo = *(__be64 *)&sk->sk_v6_rcv_saddr.in6_u.u6_addr8[8];
+	cpl->peer_ip_hi = *(__be64 *)&sk->sk_v6_daddr.in6_u.u6_addr8[0];
+	cpl->peer_ip_lo = *(__be64 *)&sk->sk_v6_daddr.in6_u.u6_addr8[8];
+
+	/* first 64 bit option field. */
+	options = TCAM_BYPASS_F | ULP_MODE_V(ULP_MODE_NONE) | NON_OFFLOAD_F |
+		  SMAC_SEL_V(tx_info->smt_idx) | TX_CHAN_V(tx_info->tx_chan);
+	cpl->opt0 = cpu_to_be64(options);
+	/* next 64 bit option field. */
+	options =
+		TX_QUEUE_V(tx_info->adap->params.tp.tx_modq[tx_info->tx_chan]);
+	cpl->opt2 = htonl(options);
+
+	return cxgb4_l2t_send(tx_info->netdev, skb, tx_info->l2te);
+}
+#endif /* #if IS_ENABLED(CONFIG_IPV6) */
+
+/*
+ * chcr_setup_connection:  create a TCB entry so that TP will form tcp packets.
+ * @sk - tcp socket.
+ * @tx_info - driver specific tls info.
+ * return: NET_TX_OK/NET_XMIT_DROP
+ */
+static int chcr_setup_connection(struct sock *sk,
+				 struct chcr_ktls_info *tx_info)
+{
+	struct tid_info *t = &tx_info->adap->tids;
+	int atid, ret = 0;
+
+	atid = cxgb4_alloc_atid(t, tx_info);
+	if (atid == -1)
+		return -EINVAL;
+
+	tx_info->atid = atid;
+	tx_info->ip_family = sk->sk_family;
+
+	if (sk->sk_family == AF_INET) {
+		tx_info->ip_family = AF_INET;
+		ret = chcr_ktls_act_open_req(sk, tx_info, atid);
+#if IS_ENABLED(CONFIG_IPV6)
+	} else {
+		if (!sk->sk_ipv6only &&
+		    ipv6_addr_type(&sk->sk_v6_daddr) == IPV6_ADDR_MAPPED) {
+			tx_info->ip_family = AF_INET;
+			ret = chcr_ktls_act_open_req(sk, tx_info, atid);
+		} else {
+			tx_info->ip_family = AF_INET6;
+			ret = cxgb4_clip_get(tx_info->netdev,
+					     (const u32 *)
+					     &sk->sk_v6_rcv_saddr.s6_addr,
+					     1);
+			if (ret)
+				goto out;
+			ret = chcr_ktls_act_open_req6(sk, tx_info, atid);
+		}
+#endif
+	}
+
+	/* if return type is NET_XMIT_CN, msg will be sent but delayed, mark ret
+	 * success, if any other return type clear atid and return that failure.
+	 */
+	if (ret) {
+		if (ret == NET_XMIT_CN)
+			ret = 0;
+		else
+			cxgb4_free_atid(t, atid);
+		goto out;
+	}
+
+	/* update the connection state */
+	chcr_ktls_update_connection_state(tx_info, KTLS_CONN_ACT_OPEN_REQ);
+out:
+	return ret;
+}
+
+/*
+ * chcr_set_tcb_field: update tcb fields.
+ * @tx_info - driver specific tls info.
+ * @word - TCB word.
+ * @mask - TCB word related mask.
+ * @val - TCB word related value.
+ * @no_reply - set 1 if not looking for TP response.
+ */
+static int chcr_set_tcb_field(struct chcr_ktls_info *tx_info, u16 word,
+			      u64 mask, u64 val, int no_reply)
+{
+	struct cpl_set_tcb_field *req;
+	struct sk_buff *skb;
+
+	skb = alloc_skb(sizeof(struct cpl_set_tcb_field), GFP_ATOMIC);
+	if (!skb)
+		return -ENOMEM;
+
+	req = (struct cpl_set_tcb_field *)__skb_put_zero(skb, sizeof(*req));
+	INIT_TP_WR_CPL(req, CPL_SET_TCB_FIELD, tx_info->tid);
+	req->reply_ctrl = htons(QUEUENO_V(tx_info->rx_qid) |
+				NO_REPLY_V(no_reply));
+	req->word_cookie = htons(TCB_WORD_V(word));
+	req->mask = cpu_to_be64(mask);
+	req->val = cpu_to_be64(val);
+
+	set_wr_txq(skb, CPL_PRIORITY_CONTROL, tx_info->port_id);
+	return cxgb4_ofld_send(tx_info->netdev, skb);
+}
+
+/*
+ * chcr_ktls_mark_tcb_close: mark tcb state to CLOSE
+ * @tx_info - driver specific tls info.
+ * return: NET_TX_OK/NET_XMIT_DROP.
+ */
+static int chcr_ktls_mark_tcb_close(struct chcr_ktls_info *tx_info)
+{
+	return chcr_set_tcb_field(tx_info, TCB_T_STATE_W,
+				  TCB_T_STATE_V(TCB_T_STATE_M),
+				  CHCR_TCB_STATE_CLOSED, 1);
+}
+
+/*
+ * chcr_ktls_dev_del:  call back for tls_dev_del.
+ * Remove the tid and l2t entry and close the connection.
+ * it per connection basis.
+ * @netdev - net device.
+ * @tls_cts - tls context.
+ * @direction - TX/RX crypto direction
+ */
+static void chcr_ktls_dev_del(struct net_device *netdev,
+			      struct tls_context *tls_ctx,
+			      enum tls_offload_ctx_dir direction)
+{
+	struct chcr_ktls_ofld_ctx_tx *tx_ctx =
+				chcr_get_ktls_tx_context(tls_ctx);
+	struct chcr_ktls_info *tx_info = tx_ctx->chcr_info;
+	struct sock