Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

16 files changed, 9633 insertions, 0 deletions

diff --git a/drivers/net/ethernet/chelsio/inline_crypto/Kconfig b/drivers/net/ethernet/chelsio/inline_crypto/Kconfig
new file mode 100644
index 000000000..521955e1f
--- /dev/null
+++ b/drivers/net/ethernet/chelsio/inline_crypto/Kconfig
@@ -0,0 +1,54 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Chelsio inline crypto configuration
+#
+
+config CHELSIO_INLINE_CRYPTO
+	bool "Chelsio Inline Crypto support"
+	depends on CHELSIO_T4
+	default y
+	help
+	  Enable support for inline crypto.
+	  Allows enable/disable from list of inline crypto drivers.
+
+if CHELSIO_INLINE_CRYPTO
+
+config CRYPTO_DEV_CHELSIO_TLS
+	tristate "Chelsio Crypto Inline TLS Driver"
+	depends on CHELSIO_T4
+	depends on TLS
+	depends on TLS_TOE
+	help
+	  Support Chelsio Inline TLS with Chelsio crypto accelerator.
+	  Enable inline TLS support for Tx and Rx.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called chtls.
+
+config CHELSIO_IPSEC_INLINE
+       tristate "Chelsio IPSec XFRM Tx crypto offload"
+       depends on CHELSIO_T4
+       depends on XFRM_OFFLOAD
+       depends on INET_ESP_OFFLOAD || INET6_ESP_OFFLOAD
+       help
+        Support Chelsio Inline IPsec with Chelsio crypto accelerator.
+        Enable inline IPsec support for Tx.
+
+        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
+	select CRYPTO_LIB_AES
+        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
new file mode 100644
index 000000000..27e6d7e2f
--- /dev/null
+++ b/drivers/net/ethernet/chelsio/inline_crypto/Makefile
@@ -0,0 +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_ipsec/Makefile b/drivers/net/ethernet/chelsio/inline_crypto/ch_ipsec/Makefile
new file mode 100644
index 000000000..efdcaaebc
--- /dev/null
+++ b/drivers/net/ethernet/chelsio/inline_crypto/ch_ipsec/Makefile
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-2.0-only
+ccflags-y := -I $(srctree)/drivers/net/ethernet/chelsio/cxgb4 \
+             -I $(srctree)/drivers/crypto/chelsio
+
+obj-$(CONFIG_CHELSIO_IPSEC_INLINE) += ch_ipsec.o
+ch_ipsec-objs := chcr_ipsec.o
+
+
diff --git a/drivers/net/ethernet/chelsio/inline_crypto/ch_ipsec/chcr_ipsec.c b/drivers/net/ethernet/chelsio/inline_crypto/ch_ipsec/chcr_ipsec.c
new file mode 100644
index 000000000..585590520
--- /dev/null
+++ b/drivers/net/ethernet/chelsio/inline_crypto/ch_ipsec/chcr_ipsec.c
@@ -0,0 +1,823 @@
+/*
+ * This file is part of the Chelsio T6 Crypto driver for Linux.
+ *
+ * Copyright (c) 2003-2017 Chelsio Communications, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * Written and Maintained by:
+ *	Atul Gupta (atul.gupta@chelsio.com)
+ */
+
+#define pr_fmt(fmt) "ch_ipsec: " fmt
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/crypto.h>
+#include <linux/skbuff.h>
+#include <linux/rtnetlink.h>
+#include <linux/highmem.h>
+#include <linux/if_vlan.h>
+#include <linux/ip.h>
+#include <linux/netdevice.h>
+#include <net/esp.h>
+#include <net/xfrm.h>
+#include <crypto/aes.h>
+#include <crypto/algapi.h>
+#include <crypto/hash.h>
+#include <crypto/sha1.h>
+#include <crypto/sha2.h>
+#include <crypto/authenc.h>
+#include <crypto/internal/aead.h>
+#include <crypto/null.h>
+#include <crypto/internal/skcipher.h>
+#include <crypto/aead.h>
+#include <crypto/scatterwalk.h>
+#include <crypto/internal/hash.h>
+
+#include "chcr_ipsec.h"
+
+/*
+ * Max Tx descriptor space we allow for an Ethernet packet to be inlined
+ * into a WR.
+ */
+#define MAX_IMM_TX_PKT_LEN 256
+#define GCM_ESP_IV_SIZE     8
+
+static LIST_HEAD(uld_ctx_list);
+static DEFINE_MUTEX(dev_mutex);
+
+static bool ch_ipsec_offload_ok(struct sk_buff *skb, struct xfrm_state *x);
+static int ch_ipsec_uld_state_change(void *handle, enum cxgb4_state new_state);
+static int ch_ipsec_xmit(struct sk_buff *skb, struct net_device *dev);
+static void *ch_ipsec_uld_add(const struct cxgb4_lld_info *infop);
+static void ch_ipsec_advance_esn_state(struct xfrm_state *x);
+static void ch_ipsec_xfrm_free_state(struct xfrm_state *x);
+static void ch_ipsec_xfrm_del_state(struct xfrm_state *x);
+static int ch_ipsec_xfrm_add_state(struct xfrm_state *x);
+
+static const struct xfrmdev_ops ch_ipsec_xfrmdev_ops = {
+	.xdo_dev_state_add      = ch_ipsec_xfrm_add_state,
+	.xdo_dev_state_delete   = ch_ipsec_xfrm_del_state,
+	.xdo_dev_state_free     = ch_ipsec_xfrm_free_state,
+	.xdo_dev_offload_ok     = ch_ipsec_offload_ok,
+	.xdo_dev_state_advance_esn = ch_ipsec_advance_esn_state,
+};
+
+static struct cxgb4_uld_info ch_ipsec_uld_info = {
+	.name = CHIPSEC_DRV_MODULE_NAME,
+	.add = ch_ipsec_uld_add,
+	.state_change = ch_ipsec_uld_state_change,
+	.tx_handler = ch_ipsec_xmit,
+	.xfrmdev_ops = &ch_ipsec_xfrmdev_ops,
+};
+
+static void *ch_ipsec_uld_add(const struct cxgb4_lld_info *infop)
+{
+	struct ipsec_uld_ctx *u_ctx;
+
+	pr_info_once("%s - version %s\n", CHIPSEC_DRV_DESC,
+		     CHIPSEC_DRV_VERSION);
+	u_ctx = kzalloc(sizeof(*u_ctx), GFP_KERNEL);
+	if (!u_ctx) {
+		u_ctx = ERR_PTR(-ENOMEM);
+		goto out;
+	}
+	u_ctx->lldi = *infop;
+out:
+	return u_ctx;
+}
+
+static int ch_ipsec_uld_state_change(void *handle, enum cxgb4_state new_state)
+{
+	struct ipsec_uld_ctx *u_ctx = handle;
+
+	pr_debug("new_state %u\n", new_state);
+	switch (new_state) {
+	case CXGB4_STATE_UP:
+		pr_info("%s: Up\n", pci_name(u_ctx->lldi.pdev));
+		mutex_lock(&dev_mutex);
+		list_add_tail(&u_ctx->entry, &uld_ctx_list);
+		mutex_unlock(&dev_mutex);
+		break;
+	case CXGB4_STATE_START_RECOVERY:
+	case CXGB4_STATE_DOWN:
+	case CXGB4_STATE_DETACH:
+		pr_info("%s: Down\n", pci_name(u_ctx->lldi.pdev));
+		list_del(&u_ctx->entry);
+		break;
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+static int ch_ipsec_setauthsize(struct xfrm_state *x,
+				struct ipsec_sa_entry *sa_entry)
+{
+	int hmac_ctrl;
+	int authsize = x->aead->alg_icv_len / 8;
+
+	sa_entry->authsize = authsize;
+
+	switch (authsize) {
+	case ICV_8:
+		hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2;
+		break;
+	case ICV_12:
+		hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT;
+		break;
+	case ICV_16:
+		hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
+		break;
+	default:
+		return -EINVAL;
+	}
+	return hmac_ctrl;
+}
+
+static int ch_ipsec_setkey(struct xfrm_state *x,
+			   struct ipsec_sa_entry *sa_entry)
+{
+	int keylen = (x->aead->alg_key_len + 7) / 8;
+	unsigned char *key = x->aead->alg_key;
+	int ck_size, key_ctx_size = 0;
+	unsigned char ghash_h[AEAD_H_SIZE];
+	struct crypto_aes_ctx aes;
+	int ret = 0;
+
+	if (keylen > 3) {
+		keylen -= 4;  /* nonce/salt is present in the last 4 bytes */
+		memcpy(sa_entry->salt, key + keylen, 4);
+	}
+
+	if (keylen == AES_KEYSIZE_128) {
+		ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
+	} else if (keylen == AES_KEYSIZE_192) {
+		ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192;
+	} else if (keylen == AES_KEYSIZE_256) {
+		ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
+	} else {
+		pr_err("GCM: Invalid key length %d\n", keylen);
+		ret = -EINVAL;
+		goto out;
+	}
+
+	memcpy(sa_entry->key, key, keylen);
+	sa_entry->enckey_len = keylen;
+	key_ctx_size = sizeof(struct _key_ctx) +
+			      ((DIV_ROUND_UP(keylen, 16)) << 4) +
+			      AEAD_H_SIZE;
+
+	sa_entry->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size,
+						 CHCR_KEYCTX_MAC_KEY_SIZE_128,
+						 0, 0,
+						 key_ctx_size >> 4);
+
+	/* Calculate the H = CIPH(K, 0 repeated 16 times).
+	 * It will go in key context
+	 */
+	ret = aes_expandkey(&aes, key, keylen);
+	if (ret) {
+		sa_entry->enckey_len = 0;
+		goto out;
+	}
+	memset(ghash_h, 0, AEAD_H_SIZE);
+	aes_encrypt(&aes, ghash_h, ghash_h);
+	memzero_explicit(&aes, sizeof(aes));
+
+	memcpy(sa_entry->key + (DIV_ROUND_UP(sa_entry->enckey_len, 16) *
+	       16), ghash_h, AEAD_H_SIZE);
+	sa_entry->kctx_len = ((DIV_ROUND_UP(sa_entry->enckey_len, 16)) << 4) +
+			      AEAD_H_SIZE;
+out:
+	return ret;
+}
+
+/*
+ * ch_ipsec_xfrm_add_state
+ * returns 0 on success, negative error if failed to send message to FPGA
+ * positive error if FPGA returned a bad response
+ */
+static int ch_ipsec_xfrm_add_state(struct xfrm_state *x)
+{
+	struct ipsec_sa_entry *sa_entry;
+	int res = 0;
+
+	if (x->props.aalgo != SADB_AALG_NONE) {
+		pr_debug("Cannot offload authenticated xfrm states\n");
+		return -EINVAL;
+	}
+	if (x->props.calgo != SADB_X_CALG_NONE) {
+		pr_debug("Cannot offload compressed xfrm states\n");
+		return -EINVAL;
+	}
+	if (x->props.family != AF_INET &&
+	    x->props.family != AF_INET6) {
+		pr_debug("Only IPv4/6 xfrm state offloaded\n");
+		return -EINVAL;
+	}
+	if (x->props.mode != XFRM_MODE_TRANSPORT &&
+	    x->props.mode != XFRM_MODE_TUNNEL) {
+		pr_debug("Only transport and tunnel xfrm offload\n");
+		return -EINVAL;
+	}
+	if (x->id.proto != IPPROTO_ESP) {
+		pr_debug("Only ESP xfrm state offloaded\n");
+		return -EINVAL;
+	}
+	if (x->encap) {
+		pr_debug("Encapsulated xfrm state not offloaded\n");
+		return -EINVAL;
+	}
+	if (!x->aead) {
+		pr_debug("Cannot offload xfrm states without aead\n");
+		return -EINVAL;
+	}
+	if (x->aead->alg_icv_len != 128 &&
+	    x->aead->alg_icv_len != 96) {
+		pr_debug("Cannot offload xfrm states with AEAD ICV length other than 96b & 128b\n");
+	return -EINVAL;
+	}
+	if ((x->aead->alg_key_len != 128 + 32) &&
+	    (x->aead->alg_key_len != 256 + 32)) {
+		pr_debug("cannot offload xfrm states with AEAD key length other than 128/256 bit\n");
+		return -EINVAL;
+	}
+	if (x->tfcpad) {
+		pr_debug("Cannot offload xfrm states with tfc padding\n");
+		return -EINVAL;
+	}
+	if (!x->geniv) {
+		pr_debug("Cannot offload xfrm states without geniv\n");
+		return -EINVAL;
+	}
+	if (strcmp(x->geniv, "seqiv")) {
+		pr_debug("Cannot offload xfrm states with geniv other than seqiv\n");
+		return -EINVAL;
+	}
+
+	sa_entry = kzalloc(sizeof(*sa_entry), GFP_KERNEL);
+	if (!sa_entry) {
+		res = -ENOMEM;
+		goto out;
+	}
+
+	sa_entry->hmac_ctrl = ch_ipsec_setauthsize(x, sa_entry);
+	if (x->props.flags & XFRM_STATE_ESN)
+		sa_entry->esn = 1;
+	ch_ipsec_setkey(x, sa_entry);
+	x->xso.offload_handle = (unsigned long)sa_entry;
+	try_module_get(THIS_MODULE);
+out:
+	return res;
+}
+
+static void ch_ipsec_xfrm_del_state(struct xfrm_state *x)
+{
+	/* do nothing */
+	if (!x->xso.offload_handle)
+		return;
+}
+
+static void ch_ipsec_xfrm_free_state(struct xfrm_state *x)
+{
+	struct ipsec_sa_entry *sa_entry;
+
+	if (!x->xso.offload_handle)
+		return;
+
+	sa_entry = (struct ipsec_sa_entry *)x->xso.offload_handle;
+	kfree(sa_entry);
+	module_put(THIS_MODULE);
+}
+
+static bool ch_ipsec_offload_ok(struct sk_buff *skb, struct xfrm_state *x)
+{
+	if (x->props.family == AF_INET) {
+		/* Offload with IP options is not supported yet */
+		if (ip_hdr(skb)->ihl > 5)
+			return false;
+	} else {
+		/* Offload with IPv6 extension headers is not support yet */
+		if (ipv6_ext_hdr(ipv6_hdr(skb)->nexthdr))
+			return false;
+	}
+	return true;
+}
+
+static void ch_ipsec_advance_esn_state(struct xfrm_state *x)
+{
+	/* do nothing */
+	if (!x->xso.offload_handle)
+		return;
+}
+
+static int is_eth_imm(const struct sk_buff *skb,
+		      struct ipsec_sa_entry *sa_entry)
+{
+	unsigned int kctx_len;
+	int hdrlen;
+
+	kctx_len = sa_entry->kctx_len;
+	hdrlen = sizeof(struct fw_ulptx_wr) +
+		 sizeof(struct chcr_ipsec_req) + kctx_len;
+
+	hdrlen += sizeof(struct cpl_tx_pkt);
+	if (sa_entry->esn)
+		hdrlen += (DIV_ROUND_UP(sizeof(struct chcr_ipsec_aadiv), 16)
+			   << 4);
+	if (skb->len <= MAX_IMM_TX_PKT_LEN - hdrlen)
+		return hdrlen;
+	return 0;
+}
+
+static unsigned int calc_tx_sec_flits(const struct sk_buff *skb,
+				      struct ipsec_sa_entry *sa_entry,
+				      bool *immediate)
+{
+	unsigned int kctx_len;
+	unsigned int flits;
+	int aadivlen;
+	int hdrlen;
+
+	kctx_len = sa_entry->kctx_len;
+	hdrlen = is_eth_imm(skb, sa_entry);
+	aadivlen = sa_entry->esn ? DIV_ROUND_UP(sizeof(struct chcr_ipsec_aadiv),
+						16) : 0;
+	aadivlen <<= 4;
+
+	/* If the skb is small enough, we can pump it out as a work request
+	 * with only immediate data.  In that case we just have to have the
+	 * TX Packet header plus the skb data in the Work Request.
+	 */
+
+	if (hdrlen) {
+		*immediate = true;
+		return DIV_ROUND_UP(skb->len + hdrlen, sizeof(__be64));
+	}
+
+	flits = sgl_len(skb_shinfo(skb)->nr_frags + 1);
+
+	/* Otherwise, we're going to have to construct a Scatter gather list
+	 * of the skb body and fragments.  We also include the flits necessary
+	 * for the TX Packet Work Request and CPL.  We always have a firmware
+	 * Write Header (incorporated as part of the cpl_tx_pkt_lso and
+	 * cpl_tx_pkt structures), followed by either a TX Packet Write CPL
+	 * message or, if we're doing a Large Send Offload, an LSO CPL message
+	 * with an embedded TX Packet Write CPL message.
+	 */
+	flits += (sizeof(struct fw_ulptx_wr) +
+		  sizeof(struct chcr_ipsec_req) +
+		  kctx_len +
+		  sizeof(struct cpl_tx_pkt_core) +
+		  aadivlen) / sizeof(__be64);
+	return flits;
+}
+
+static void *copy_esn_pktxt(struct sk_buff *skb,
+			    struct net_device *dev,
+			    void *pos,
+			    struct ipsec_sa_entry *sa_entry)
+{
+	struct chcr_ipsec_aadiv *aadiv;
+	struct ulptx_idata *sc_imm;
+	struct ip_esp_hdr *esphdr;
+	struct xfrm_offload *xo;
+	struct sge_eth_txq *q;
+	struct adapter *adap;
+	struct port_info *pi;
+	__be64 seqno;
+	u32 qidx;
+	u32 seqlo;
+	u8 *iv;
+	int eoq;
+	int len;
+
+	pi = netdev_priv(dev);
+	adap = pi->adapter;
+	qidx = skb->queue_mapping;
+	q = &adap->sge.ethtxq[qidx + pi->first_qset];
+
+	/* end of queue, reset pos to start of queue */
+	eoq = (void *)q->q.stat - pos;
+	if (!eoq)
+		pos = q->q.desc;
+
+	len = DIV_ROUND_UP(sizeof(struct chcr_ipsec_aadiv), 16) << 4;
+	memset(pos, 0, len);
+	aadiv = (struct chcr_ipsec_aadiv *)pos;
+	esphdr = (struct ip_esp_hdr *)skb_transport_header(skb);
+	iv = skb_transport_header(skb) + sizeof(struct ip_esp_hdr);
+	xo = xfrm_offload(skb);
+
+	aadiv->spi = (esphdr->spi);
+	seqlo = ntohl(esphdr->seq_no);
+	seqno = cpu_to_be64(seqlo + ((u64)xo->seq.hi << 32));
+	memcpy(aadiv->seq_no, &seqno, 8);
+	iv = skb_transport_header(skb) + sizeof(struct ip_esp_hdr);
+	memcpy(aadiv->iv, iv, 8);
+
+	if (is_eth_imm(skb, sa_entry) && !skb_is_nonlinear(skb)) {
+		sc_imm = (struct ulptx_idata *)(pos +
+			  (DIV_ROUND_UP(sizeof(struct chcr_ipsec_aadiv),
+					sizeof(__be64)) << 3));
+		sc_imm->cmd_more = FILL_CMD_MORE(0);
+		sc_imm->len = cpu_to_be32(skb->len);
+	}
+	pos += len;
+	return pos;
+}
+
+static void *copy_cpltx_pktxt(struct sk_buff *skb,
+			      struct net_device *dev,
+			      void *pos,
+			      struct ipsec_sa_entry *sa_entry)
+{
+	struct cpl_tx_pkt_core *cpl;
+	struct sge_eth_txq *q;
+	struct adapter *adap;
+	struct port_info *pi;
+	u32 ctrl0, qidx;
+	u64 cntrl = 0;
+	int left;
+
+	pi = netdev_priv(dev);
+	adap = pi->adapter;
+	qidx = skb->queue_mapping;
+	q = &adap->sge.ethtxq[qidx + pi->first_qset];
+
+	left = (void *)q->q.stat - pos;
+	if (!left)
+		pos = q->q.desc;
+
+	cpl = (struct cpl_tx_pkt_core *)pos;
+
+	cntrl = TXPKT_L4CSUM_DIS_F | TXPKT_IPCSUM_DIS_F;
+	ctrl0 = TXPKT_OPCODE_V(CPL_TX_PKT_XT) | TXPKT_INTF_V(pi->tx_chan) |
+			       TXPKT_PF_V(adap->pf);
+	if (skb_vlan_tag_present(skb)) {
+		q->vlan_ins++;
+		cntrl |= TXPKT_VLAN_VLD_F | TXPKT_VLAN_V(skb_vlan_tag_get(skb));
+	}
+
+	cpl->ctrl0 = htonl(ctrl0);
+	cpl->pack = htons(0);
+	cpl->len = htons(skb->len);
+	cpl->ctrl1 = cpu_to_be64(cntrl);
+
+	pos += sizeof(struct cpl_tx_pkt_core);
+	/* Copy ESN info for HW */
+	if (sa_entry->esn)
+		pos = copy_esn_pktxt(skb, dev, pos, sa_entry);
+	return pos;
+}
+
+static void *copy_key_cpltx_pktxt(struct sk_buff *skb,
+				  struct net_device *dev,
+				  void *pos,
+				  struct ipsec_sa_entry *sa_entry)
+{
+	struct _key_ctx *key_ctx;
+	int left, eoq, key_len;
+	struct sge_eth_txq *q;
+	struct adapter *adap;
+	struct port_info *pi;
+	unsigned int qidx;
+
+	pi = netdev_priv(dev);
+	adap = pi->adapter;
+	qidx = skb->queue_mapping;
+	q = &adap->sge.ethtxq[qidx + pi->first_qset];
+	key_len = sa_entry->kctx_len;
+
+	/* end of queue, reset pos to start of queue */
+	eoq = (void *)q->q.stat - pos;
+	left = eoq;
+	if (!eoq) {
+		pos = q->q.desc;
+		left = 64 * q->q.size;
+	}
+
+	/* Copy the Key context header */
+	key_ctx = (struct _key_ctx *)pos;
+	key_ctx->ctx_hdr = sa_entry->key_ctx_hdr;
+	memcpy(key_ctx->salt, sa_entry->salt, MAX_SALT);
+	pos += sizeof(struct _key_ctx);
+	left -= sizeof(struct _key_ctx);
+
+	if (likely(key_len <= left)) {
+		memcpy(key_ctx->key, sa_entry->key, key_len);
+		pos += key_len;
+	} else {
+		memcpy(pos, sa_entry->key, left);
+		memcpy(q->q.desc, sa_entry->key + left,
+		       key_len - left);
+		pos = (u8 *)q->q.desc + (key_len - left);
+	}
+	/* Copy CPL TX PKT XT */
+	pos = copy_cpltx_pktxt(skb, dev, pos, sa_entry);
+
+	return pos;
+}
+
+static void *ch_ipsec_crypto_wreq(struct sk_buff *skb,
+				  struct net_device *dev,
+				  void *pos,
+				  int credits,
+				  struct ipsec_sa_entry *sa_entry)
+{
+	struct port_info *pi = netdev_priv(dev);
+	struct adapter *adap = pi->adapter;
+	unsigned int ivsize = GCM_ESP_IV_SIZE;
+	struct chcr_ipsec_wr *wr;
+	bool immediate = false;
+	u16 immdatalen = 0;
+	unsigned int flits;
+	u32 ivinoffset;
+	u32 aadstart;
+	u32 aadstop;
+	u32 ciphstart;
+	u16 sc_more = 0;
+	u32 ivdrop = 0;
+	u32 esnlen = 0;
+	u32 wr_mid;
+	u16 ndesc;
+	int qidx = skb_get_queue_mapping(skb);
+	struct sge_eth_txq *q = &adap->sge.ethtxq[qidx + pi->first_qset];
+	unsigned int kctx_len = sa_entry->kctx_len;
+	int qid = q->q.cntxt_id;
+
+	atomic_inc(&adap->ch_ipsec_stats.ipsec_cnt);
+
+	flits = calc_tx_sec_flits(skb, sa_entry, &immediate);
+	ndesc = DIV_ROUND_UP(flits, 2);
+	if (sa_entry->esn)
+		ivdrop = 1;
+
+	if (immediate)
+		immdatalen = skb->len;
+
+	if (sa_entry->esn) {
+		esnlen = sizeof(struct chcr_ipsec_aadiv);
+		if (!skb_is_nonlinear(skb))
+			sc_more  = 1;
+	}
+
+	/* WR Header */
+	wr = (struct chcr_ipsec_wr *)pos;
+	wr->wreq.op_to_compl = htonl(FW_WR_OP_V(FW_ULPTX_WR));
+	wr_mid = FW_CRYPTO_LOOKASIDE_WR_LEN16_V(ndesc);
+
+	if (unlikely(credits < ETHTXQ_STOP_THRES)) {
+		netif_tx_stop_queue(q->txq);
+		q->q.stops++;
+		if (!q->dbqt)
+			wr_mid |= FW_WR_EQUEQ_F | FW_WR_EQUIQ_F;
+	}
+	wr_mid |= FW_ULPTX_WR_DATA_F;
+	wr->wreq.flowid_len16 = htonl(wr_mid);
+
+	/* ULPTX */
+	wr->req.ulptx.cmd_dest = FILL_ULPTX_CMD_DEST(pi->port_id, qid);
+	wr->req.ulptx.len = htonl(ndesc - 1);
+
+	/* Sub-command */
+	wr->req.sc_imm.cmd_more = FILL_CMD_MORE(!immdatalen || sc_more);
+	wr->req.sc_imm.len = cpu_to_be32(sizeof(struct cpl_tx_sec_pdu) +
+					 sizeof(wr->req.key_ctx) +
+					 kctx_len +
+					 sizeof(struct cpl_tx_pkt_core) +
+					 esnlen +
+					 (esnlen ? 0 : immdatalen));
+
+	/* CPL_SEC_PDU */
+	ivinoffset = sa_entry->esn ? (ESN_IV_INSERT_OFFSET + 1) :
+				     (skb_transport_offset(skb) +
+				      sizeof(struct ip_esp_hdr) + 1);
+	wr->req.sec_cpl.op_ivinsrtofst = htonl(
+				CPL_TX_SEC_PDU_OPCODE_V(CPL_TX_SEC_PDU) |
+				CPL_TX_SEC_PDU_CPLLEN_V(2) |
+				CPL_TX_SEC_PDU_PLACEHOLDER_V(1) |
+				CPL_TX_SEC_PDU_IVINSRTOFST_V(
+							     ivinoffset));
+
+	wr->req.sec_cpl.pldlen = htonl(skb->len + esnlen);
+	aadstart = sa_entry->esn ? 1 : (skb_transport_offset(skb) + 1);
+	aadstop = sa_entry->esn ? ESN_IV_INSERT_OFFSET :
+				  (skb_transport_offset(skb) +
+				   sizeof(struct ip_esp_hdr));
+	ciphstart = skb_transport_offset(skb) + sizeof(struct ip_esp_hdr) +
+		    GCM_ESP_IV_SIZE + 1;
+	ciphstart += sa_entry->esn ?  esnlen : 0;
+
+	wr->req.sec_cpl.aadstart_cipherstop_hi = FILL_SEC_CPL_CIPHERSTOP_HI(
+							aadstart,
+							aadstop,
+							ciphstart, 0);
+
+	wr->req.sec_cpl.cipherstop_lo_authinsert =
+		FILL_SEC_CPL_AUTHINSERT(0, ciphstart,
+					sa_entry->authsize,
+					 sa_entry->authsize);
+	wr->req.sec_cpl.seqno_numivs =
+		FILL_SEC_CPL_SCMD0_SEQNO(CHCR_ENCRYPT_OP, 1,
+					 CHCR_SCMD_CIPHER_MODE_AES_GCM,
+					 CHCR_SCMD_AUTH_MODE_GHASH,
+					 sa_entry->hmac_ctrl,
+					 ivsize >> 1);
+	wr->req.sec_cpl.ivgen_hdrlen =  FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 1,
+								  0, ivdrop, 0);
+
+	pos += sizeof(struct fw_ulptx_wr) +
+	       sizeof(struct ulp_txpkt) +
+	       sizeof(struct ulptx_idata) +
+	       sizeof(struct cpl_tx_sec_pdu);
+
+	pos = copy_key_cpltx_pktxt(skb, dev, pos, sa_entry);
+
+	return pos;
+}
+
+/**
+ *      flits_to_desc - returns the num of Tx descriptors for the given flits
+ *      @n: the number of flits
+ *
+ *      Returns the number of Tx descriptors needed for the supplied number
+ *      of flits.
+ */
+static unsigned int flits_to_desc(unsigned int n)
+{
+	WARN_ON(n > SGE_MAX_WR_LEN / 8);
+	return DIV_ROUND_UP(n, 8);
+}
+
+static unsigned int txq_avail(const struct sge_txq *q)
+{
+	return q->size - 1 - q->in_use;
+}
+
+static void eth_txq_stop(struct sge_eth_txq *q)
+{
+	netif_tx_stop_queue(q->txq);
+	q->q.stops++;
+}
+
+static void 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;
+}
+
+/*
+ *      ch_ipsec_xmit called from ULD Tx handler
+ */
+int ch_ipsec_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+	struct xfrm_state *x = xfrm_input_state(skb);
+	unsigned int last_desc, ndesc, flits = 0;
+	struct ipsec_sa_entry *sa_entry;
+	u64 *pos, *end, *before, *sgl;
+	struct tx_sw_desc *sgl_sdesc;
+	int qidx, left, credits;
+	bool immediate = false;
+	struct sge_eth_txq *q;
+	struct adapter *adap;
+	struct port_info *pi;
+	struct sec_path *sp;
+
+	if (!x->xso.offload_handle)
+		return NETDEV_TX_BUSY;
+
+	sa_entry = (struct ipsec_sa_entry *)x->xso.offload_handle;
+
+	sp = skb_sec_path(skb);
+	if (sp->len != 1) {
+out_free:       dev_kfree_skb_any(skb);
+		return NETDEV_TX_OK;
+	}
+
+	pi = netdev_priv(dev);
+	adap = pi->adapter;
+	qidx = skb->queue_mapping;
+	q = &adap->sge.ethtxq[qidx + pi->first_qset];
+
+	cxgb4_reclaim_completed_tx(adap, &q->q, true);
+
+	flits = calc_tx_sec_flits(skb, sa_entry, &immediate);
+	ndesc = flits_to_desc(flits);
+	credits = txq_avail(&q->q) - ndesc;
+
+	if (unlikely(credits < 0)) {
+		eth_txq_stop(q);
+		dev_err(adap->pdev_dev,
+			"%s: Tx ring %u full while queue awake! cred:%d %d %d flits:%d\n",
+			dev->name, qidx, credits, ndesc, txq_avail(&q->q),
+			flits);
+		return NETDEV_TX_BUSY;
+	}
+
+	last_desc = q->q.pidx + ndesc - 1;
+	if (last_desc >= q->q.size)
+		last_desc -= q->q.size;
+	sgl_sdesc = &q->q.sdesc[last_desc];
+
+	if (!immediate &&
+	    unlikely(cxgb4_map_skb(adap->pdev_dev, skb, sgl_sdesc->addr) < 0)) {
+		memset(sgl_sdesc->addr, 0, sizeof(sgl_sdesc->addr));
+		q->mapping_err++;
+		goto out_free;
+	}
+
+	pos = (u64 *)&q->q.desc[q->q.pidx];
+	before = (u64 *)pos;
+	end = (u64 *)pos + flits;
+	/* Setup IPSec CPL */
+	pos = (void *)ch_ipsec_crypto_wreq(skb, dev, (void *)pos,
+					   credits, sa_entry);
+	if (before > (u64 *)pos) {
+		left = (u8 *)end - (u8 *)q->q.stat;
+		end = (void *)q->q.desc + left;
+	}
+	if (pos == (u64 *)q->q.stat) {
+		left = (u8 *)end - (u8 *)q->q.stat;
+		end = (void *)q->q.desc + left;
+		pos = (void *)q->q.desc;
+	}
+
+	sgl = (void *)pos;
+	if (immediate) {
+		cxgb4_inline_tx_skb(skb, &q->q, sgl);
+		dev_consume_skb_any(skb);
+	} else {
+		cxgb4_write_sgl(skb, &q->q, (void *)sgl, end,
+				0, sgl_sdesc->addr);
+		skb_orphan(skb);
+		sgl_sdesc->skb = skb;
+	}
+	txq_advance(&q->q, ndesc);
+
+	cxgb4_ring_tx_db(adap, &q->q, ndesc);
+	return NETDEV_TX_OK;
+}
+
+static int __init ch_ipsec_init(void)
+{
+	cxgb4_register_uld(CXGB4_ULD_IPSEC, &ch_ipsec_uld_info);
+
+	return 0;
+}
+
+static void __exit ch_ipsec_exit(void)
+{
+	struct ipsec_uld_ctx *u_ctx, *tmp;
+	struct adapter *adap;
+
+	mutex_lock(&dev_mutex);
+	list_for_each_entry_safe(u_ctx, tmp, &uld_ctx_list, entry) {
+		adap = pci_get_drvdata(u_ctx->lldi.pdev);
+		atomic_set(&adap->ch_ipsec_stats.ipsec_cnt, 0);
+		list_del(&u_ctx->entry);
+		kfree(u_ctx);
+	}
+	mutex_unlock(&dev_mutex);
+	cxgb4_unregister_uld(CXGB4_ULD_IPSEC);
+}
+
+module_init(ch_ipsec_init);
+module_exit(ch_ipsec_exit);
+
+MODULE_DESCRIPTION("Crypto IPSEC for Chelsio Terminator cards.");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Chelsio Communications");
+MODULE_VERSION(CHIPSEC_DRV_VERSION);
+
diff --git a/drivers/net/ethernet/chelsio/inline_crypto/ch_ipsec/chcr_ipsec.h b/drivers/net/ethernet/chelsio/inline_crypto/ch_ipsec/chcr_ipsec.h
new file mode 100644
index 000000000..1d110d2ed
--- /dev/null
+++ b/drivers/net/ethernet/chelsio/inline_crypto/ch_ipsec/chcr_ipsec.h
@@ -0,0 +1,58 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Copyright (c) 2018 Chelsio Communications, Inc. */
+
+#ifndef __CHCR_IPSEC_H__
+#define __CHCR_IPSEC_H__
+
+#include <crypto/algapi.h>
+#include "t4_hw.h"
+#include "cxgb4.h"
+#include "t4_msg.h"
+#include "cxgb4_uld.h"
+
+#include "chcr_core.h"
+#include "chcr_algo.h"
+#include "chcr_crypto.h"
+
+#define CHIPSEC_DRV_MODULE_NAME "ch_ipsec"
+#define CHIPSEC_DRV_VERSION "1.0.0.0-ko"
+#define CHIPSEC_DRV_DESC "Chelsio T6 Crypto Ipsec offload Driver"
+
+struct ipsec_uld_ctx {
+	struct list_head entry;
+	struct cxgb4_lld_info lldi;
+};
+
+struct chcr_ipsec_req {
+	struct ulp_txpkt ulptx;
+	struct ulptx_idata sc_imm;
+	struct cpl_tx_sec_pdu sec_cpl;
+	struct _key_ctx key_ctx;
+};
+
+struct chcr_ipsec_wr {
+	struct fw_ulptx_wr wreq;
+	struct chcr_ipsec_req req;
+};
+
+#define ESN_IV_INSERT_OFFSET 12
+struct chcr_ipsec_aadiv {
+	__be32 spi;
+	u8 seq_no[8];
+	u8 iv[8];
+};
+
+struct ipsec_sa_entry {
+	int hmac_ctrl;
+	u16 esn;
+	u16 resv;
+	unsigned int enckey_len;
+	unsigned int kctx_len;
+	unsigned int authsize;
+	__be32 key_ctx_hdr;
+	char salt[MAX_SALT];
+	char key[2 * AES_MAX_KEY_SIZE];
+};
+
+#endif /* __CHCR_IPSEC_H__ */
+
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 000000000..5e7d161c3
--- /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 000000000..38319f4c3
--- /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 000000000..da9973b71
--- /dev/null
+++ b/drivers/net/ethernet/chelsio/inline_crypto/ch_ktls/chcr_ktls.c
@@ -0,0 +1,2277 @@
+// 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 <crypto/aes.h>
+#include "chcr_ktls.h"
+
+static LIST_HEAD(uld_ctx_list);
+static DEFINE_MUTEX(dev_mutex);
+
+/* chcr_get_nfrags_to_send: get the remaining nfrags after start offset
+ * @skb: skb
+ * @start: start offset.
+ * @len: how much data to send after @start
+ */
+static int chcr_get_nfrags_to_send(struct sk_buff *skb, u32 start, u32 len)
+{
+	struct skb_shared_info *si = skb_shinfo(skb);
+	u32 frag_size, skb_linear_data_len = skb_headlen(skb);
+	u8 nfrags = 0, frag_idx = 0;
+	skb_frag_t *frag;
+
+	/* if its a linear skb then return 1 */
+	if (!skb_is_nonlinear(skb))
+		return 1;
+
+	if (unlikely(start < skb_linear_data_len)) {
+		frag_size = min(len, skb_linear_data_len - start);
+	} else {
+		start -= skb_linear_data_len;
+
+		frag = &si->frags[frag_idx];
+		frag_size = skb_frag_size(frag);
+		while (start >= frag_size) {
+			start -= frag_size;
+			frag_idx++;
+			frag = &si->frags[frag_idx];
+			frag_size = skb_frag_size(frag);
+		}
+		frag_size = min(len, skb_frag_size(frag) - start);
+	}
+	len -= frag_size;
+	nfrags++;
+
+	while (len) {
+		frag_size = min(len, skb_frag_size(&si->frags[frag_idx]));
+		len -= frag_size;
+		nfrags++;
+		frag_idx++;
+	}
+	return nfrags;
+}
+
+static int chcr_init_tcb_fields(struct chcr_ktls_info *tx_info);
+static void clear_conn_resources(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_aes_ctx aes_ctx;
+	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
+	 */
+
+	ret = aes_expandkey(&aes_ctx, key, keylen);
+	if (ret)
+		goto out;
+
+	memset(ghash_h, 0, ghash_size);
+	aes_encrypt(&aes_ctx, ghash_h, ghash_h);
+	memzero_explicit(&aes_ctx, sizeof(aes_ctx));
+
+	/* 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 out;
+	}
+
+	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;
+
+out:
+	return ret;
+}
+
+/*
+ * 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;
+
+	if (tx_info->ip_family == AF_INET) {
+		ret = chcr_ktls_act_open_req(sk, tx_info, atid);
+#if IS_ENABLED(CONFIG_IPV6)
+	} else {
+		ret = cxgb4_clip_get(tx_info->netdev, (const u32 *)
+				     &sk->sk_v6_rcv_saddr,
+				     1);
+		if (ret)
+			return ret;
+		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 {
+#if IS_ENABLED(CONFIG_IPV6)
+			/* clear clip entry */
+			if (tx_info->ip_family == AF_INET6)
+				cxgb4_clip_release(tx_info->netdev,
+						   (const u32 *)
+						   &sk->sk_v6_rcv_saddr,
+						   1);
+#endif
+			cxgb4_free_atid(t, atid);
+		}
+	}
+
+	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_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 ch_ktls_port_stats_debug *port_stats;
+	struct chcr_ktls_uld_ctx *u_ctx;
+
+	if (!tx_info)
+		return;
+
+	u_ctx = tx_info->adap->uld[CXGB4_ULD_KTLS].handle;
+	if (u_ctx && u_ctx->detach)
+		return;
+	/* clear l2t entry */
+	if (tx_info->l2te)
+		cxgb4_l2t_release(tx_info->l2te);
+
+#if IS_ENABLED(CONFIG_IPV6)
+	/* clear clip entry */
+	if (tx_info->ip_family == AF_INET6)
+		cxgb4_clip_release(netdev, (const u32 *)
+				   &tx_info->sk->sk_v6_rcv_saddr,
+				   1);
+#endif
+
+	/* clear tid */
+	if (tx_info->tid != -1) {
+		cxgb4_remove_tid(&tx_info->adap->tids, tx_info->tx_chan,
+				 tx_info->tid, tx_info->ip_family);
+
+		xa_erase(&u_ctx->tid_list, tx_info->tid);
+	}
+
+	port_stats = &tx_info->adap->ch_ktls_stats.ktls_port[tx_info->port_id];
+	atomic64_inc(&port_stats->ktls_tx_connection_close);
+	kvfree(tx_info);
+	tx_ctx->chcr_info = NULL;
+	/* release module refcount */
+	module_put(THIS_MODULE);
+}
+
+/*
+ * chcr_ktls_dev_add:  call back for tls_dev_add.
+ * Create a tcb entry for TP. Also add l2t entry for the connection. And
+ * generate keys & save those keys locally.
+ * @netdev - net device.
+ * @tls_cts - tls context.
+ * @direction - TX/RX crypto direction
+ * return: SUCCESS/FAILURE.
+ */
+static int chcr_ktls_dev_add(struct net_device *netdev, struct sock *sk,
+			     enum tls_offload_ctx_dir direction,
+			     struct tls_crypto_info *crypto_info,
+			     u32 start_offload_tcp_sn)
+{
+	struct tls_context *tls_ctx = tls_get_ctx(sk);
+	struct ch_ktls_port_stats_debug *port_stats;
+	struct chcr_ktls_ofld_ctx_tx *tx_ctx;
+	struct chcr_ktls_uld_ctx *u_ctx;
+	struct chcr_ktls_info *tx_info;
+	struct dst_entry *dst;
+	struct adapter *adap;
+	struct port_info *pi;
+	struct neighbour *n;
+	u8 daaddr[16];
+	int ret = -1;
+
+	tx_ctx = chcr_get_ktls_tx_context(tls_ctx);
+
+	pi = netdev_priv(netdev);
+	adap = pi->adapter;
+	port_stats = &adap->ch_ktls_stats.ktls_port[pi->port_id];
+	atomic64_inc(&port_stats->ktls_tx_connection_open);
+	u_ctx = adap->uld[CXGB4_ULD_KTLS].handle;
+
+	if (direction == TLS_OFFLOAD_CTX_DIR_RX) {
+		pr_err("not expecting for RX direction\n");
+		goto out;
+	}
+
+	if (tx_ctx->chcr_info)
+		goto out;
+
+	if (u_ctx && u_ctx->detach)
+		goto out;
+
+	tx_info = kvzalloc(sizeof(*tx_info), GFP_KERNEL);
+	if (!tx_info)
+		goto out;
+
+	tx_info->sk = sk;
+	spin_lock_init(&tx_info->lock);
+	/* initialize tid and atid to -1, 0 is a also a valid id. */
+	tx_info->tid = -1;
+	tx_info->atid = -1;
+
+	tx_info->adap = adap;
+	tx_info->netdev = netdev;
+	tx_info->first_qset = pi->first_qset;
+	tx_info->tx_chan = pi->tx_chan;
+	tx_info->smt_idx = pi->smt_idx;
+	tx_info->port_id = pi->port_id;
+	tx_info->prev_ack = 0;
+	tx_info->prev_win = 0;
+
+	tx_info->rx_qid = chcr_get_first_rx_qid(adap);
+	if (unlikely(tx_info->rx_qid < 0))
+		goto free_tx_info;
+
+	tx_info->prev_seq = start_offload_tcp_sn;
+	tx_info->tcp_start_seq_number = start_offload_tcp_sn;
+
+	/* save crypto keys */
+	ret = chcr_ktls_save_keys(tx_info, crypto_info, direction);
+	if (ret < 0)
+		goto free_tx_info;
+
+	/* get peer ip */
+	if (sk->sk_family == AF_INET) {
+		memcpy(daaddr, &sk->sk_daddr, 4);
+		tx_info->ip_family = AF_INET;
+#if IS_ENABLED(CONFIG_IPV6)
+	} else {
+		if (!ipv6_only_sock(sk) &&
+		    ipv6_addr_type(&sk->sk_v6_daddr) == IPV6_ADDR_MAPPED) {
+			memcpy(daaddr, &sk->sk_daddr, 4);
+			tx_info->ip_family = AF_INET;
+		} else {
+			memcpy(daaddr, sk->sk_v6_daddr.in6_u.u6_addr8, 16);
+			tx_info->ip_family = AF_INET6;
+		}
+#endif
+	}
+
+	/* get the l2t index */
+	dst = sk_dst_get(sk);
+	if (!dst) {
+		pr_err("DST entry not found\n");
+		goto free_tx_info;
+	}
+	n = dst_neigh_lookup(dst, daaddr);
+	if (!n || !n->dev) {
+		pr_err("neighbour not found\n");
+		dst_release(dst);
+		goto free_tx_info;
+	}
+	tx_info->l2te  = cxgb4_l2t_get(adap->l2t, n, n->dev, 0);
+
+	neigh_release(n);
+	dst_release(dst);
+
+	if (!tx_info->l2te) {
+		pr_err("l2t entry not found\n");
+		goto free_tx_info;
+	}
+
+	/* Driver shouldn't be removed until any single connection exists */
+	if (!try_module_get(THIS_MODULE))
+		goto free_l2t;
+
+	init_completion(&tx_info->completion);
+	/* create a filter and call cxgb4_l2t_send to send the packet out, which
+	 * will take care of updating l2t entry in hw if not already done.
+	 */
+	tx_info->open_state = CH_KTLS_OPEN_PENDING;
+
+	if (chcr_setup_connection(sk, tx_info))
+		goto put_module;
+
+	/* Wait for reply */
+	wait_for_completion_timeout(&tx_info->completion, 30 * HZ);
+	spin_lock_bh(&tx_info->lock);
+	if (tx_info->open_state) {
+		/* need to wait for hw response, can't free tx_info yet. */
+		if (tx_info->open_state == CH_KTLS_OPEN_PENDING)
+			tx_info->pending_close = true;
+		else
+			spin_unlock_bh(&tx_info->lock);
+		/* if in pending close, free the lock after the cleanup */
+		goto put_module;
+	}
+	spin_unlock_bh(&tx_info->lock);
+
+	/* initialize tcb */
+	reinit_completion(&tx_info->completion);
+	/* mark it pending for hw response */
+	tx_info->open_state = CH_KTLS_OPEN_PENDING;
+
+	if (chcr_init_tcb_fields(tx_info))
+		goto free_tid;
+
+	/* Wait for reply */
+	wait_for_completion_timeout(&tx_info->completion, 30 * HZ);
+	spin_lock_bh(&tx_info->lock);
+	if (tx_info->open_state) {
+		/* need to wait for hw response, can't free tx_info yet. */
+		tx_info->pending_close = true;
+		/* free the lock after cleanup */
+		goto free_tid;
+	}
+	spin_unlock_bh(&tx_info->lock);
+
+	if (!cxgb4_check_l2t_valid(tx_info->l2te))
+		goto free_tid;
+
+	atomic64_inc(&port_stats->ktls_tx_ctx);
+	tx_ctx->chcr_info = tx_info;
+
+	return 0;
+
+free_tid:
+#if IS_ENABLED(CONFIG_IPV6)
+	/* clear clip entry */
+	if (tx_info->ip_family == AF_INET6)
+		cxgb4_clip_release(netdev, (const u32 *)
+				   &sk->sk_v6_rcv_saddr,
+				   1);
+#endif
+	cxgb4_remove_tid(&tx_info->adap->tids, tx_info->tx_chan,
+			 tx_info->tid, tx_info->ip_family);
+
+	xa_erase(&u_ctx->tid_list, tx_info->tid);
+
+put_module:
+	/* release module refcount */
+	module_put(THIS_MODULE);
+free_l2t:
+	cxgb4_l2t_release(tx_info->l2te);
+free_tx_info:
+	if (tx_info->pending_close)
+		spin_unlock_bh(&tx_info->lock);
+	else
+		kvfree(tx_info);
+out:
+	atomic64_inc(&port_stats->ktls_tx_connection_fail);
+	return -1;
+}
+
+/*
+ * chcr_init_tcb_fields:  Initialize tcb fields to handle TCP seq number
+ *			  handling.
+ * @tx_info - driver specific tls info.
+ * return: NET_TX_OK/NET_XMIT_DROP
+ */
+static int chcr_init_tcb_fields(struct chcr_ktls_info *tx_info)
+{
+	int  ret = 0;
+
+	/* set tcb in offload and bypass */
+	ret =
+	chcr_set_tcb_field(tx_info, TCB_T_FLAGS_W,
+			   TCB_T_FLAGS_V(TF_CORE_BYPASS_F | TF_NON_OFFLOAD_F),
+			   TCB_T_FLAGS_V(TF_CORE_BYPASS_F), 1);
+	if (ret)
+		return ret;
+	/* reset snd_una and snd_next fields in tcb */
+	ret = chcr_set_tcb_field(tx_info, TCB_SND_UNA_RAW_W,
+				 TCB_SND_NXT_RAW_V(TCB_SND_NXT_RAW_M) |
+				 TCB_SND_UNA_RAW_V(TCB_SND_UNA_RAW_M),
+				 0, 1);
+	if (ret)
+		return ret;
+
+	/* reset send max */
+	ret = chcr_set_tcb_field(tx_info, TCB_SND_MAX_RAW_W,
+				 TCB_SND_MAX_RAW_V(TCB_SND_MAX_RAW_M),
+				 0, 1);
+	if (ret)
+		return ret;
+
+	/* update l2t index and request for tp reply to confirm tcb is
+	 * initialised to handle tx traffic.
+	 */
+	ret = chcr_set_tcb_field(tx_info, TCB_L2T_IX_W,
+				 TCB_L2T_IX_V(TCB_L2T_IX_M),
+				 TCB_L2T_IX_V(tx_info->l2te->idx), 0);
+	return ret;
+}
+
+/*
+ * chcr_ktls_cpl_act_open_rpl: connection reply received from TP.
+ */
+static int chcr_ktls_cpl_act_open_rpl(struct adapter *adap,
+				      unsigned char *input)
+{
+	const struct cpl_act_open_rpl *p = (void *)input;
+	struct chcr_ktls_info *tx_info = NULL;
+	struct chcr_ktls_ofld_ctx_tx *tx_ctx;
+	struct chcr_ktls_uld_ctx *u_ctx;
+	unsigned int atid, tid, status;
+	struct tls_context *tls_ctx;
+	struct tid_info *t;
+	int ret = 0;
+
+	tid = GET_TID(p);
+	status = AOPEN_STATUS_G(ntohl(p->atid_status));
+	atid = TID_TID_G(AOPEN_ATID_G(ntohl(p->atid_status)));
+
+	t = &adap->tids;
+	tx_info = lookup_atid(t, atid);
+
+	if (!tx_info || tx_info->atid != atid) {
+		pr_err("%s: incorrect tx_info or atid\n", __func__);
+		return -1;
+	}
+
+	cxgb4_free_atid(t, atid);
+	tx_info->atid = -1;
+
+	spin_lock(&tx_info->lock);
+	/* HW response is very close, finish pending cleanup */
+	if (tx_info->pending_close) {
+		spin_unlock(&tx_info->lock);
+		if (!status) {
+			cxgb4_remove_tid(&tx_info->adap->tids, tx_info->tx_chan,
+					 tid, tx_info->ip_family);
+		}
+		kvfree(tx_info);
+		return 0;
+	}
+
+	if (!status) {
+		tx_info->tid = tid;
+		cxgb4_insert_tid(t, tx_info, tx_info->tid, tx_info->ip_family);
+		/* Adding tid */
+		tls_ctx = tls_get_ctx(tx_info->sk);
+		tx_ctx = chcr_get_ktls_tx_context(tls_ctx);
+		u_ctx = adap->uld[CXGB4_ULD_KTLS].handle;
+		if (u_ctx) {
+			ret = xa_insert_bh(&u_ctx->tid_list, tid, tx_ctx,
+					   GFP_NOWAIT);
+			if (ret < 0) {
+				pr_err("%s: Failed to allocate tid XA entry = %d\n",
+				       __func__, tx_info->tid);
+				tx_info->open_state = CH_KTLS_OPEN_FAILURE;
+				goto out;
+			}
+		}
+		tx_info->open_state = CH_KTLS_OPEN_SUCCESS;
+	} else {
+		tx_info->open_state = CH_KTLS_OPEN_FAILURE;
+	}
+out:
+	spin_unlock(&tx_info->lock);
+
+	complete(&tx_info->completion);
+	return ret;
+}
+
+/*
+ * chcr_ktls_cpl_set_tcb_rpl: TCB reply received from TP.
+ */
+static int chcr_ktls_cpl_set_tcb_rpl(struct adapter *adap, unsigned char *input)
+{
+	const struct cpl_set_tcb_rpl *p = (void *)input;
+	struct chcr_ktls_info *tx_info = NULL;
+	struct tid_info *t;
+	u32 tid;
+
+	tid = GET_TID(p);
+
+	t = &adap->tids;
+	tx_info = lookup_tid(t, tid);
+
+	if (!tx_info || tx_info->tid != tid) {
+		pr_err("%s: incorrect tx_info or tid\n", __func__);
+		return -1;
+	}
+
+	spin_lock(&tx_info->lock);
+	if (tx_info->pending_close) {
+		spin_unlock(&tx_info->lock);
+		kvfree(tx_info);
+		return 0;
+	}
+	tx_info->open_state = CH_KTLS_OPEN_SUCCESS;
+	spin_unlock(&tx_info->lock);
+
+	complete(&tx_info->completion);
+	return 0;
+}
+
+static void *__chcr_write_cpl_set_tcb_ulp(struct chcr_ktls_info *tx_info,
+					u32 tid, void *pos, u16 word,
+					struct sge_eth_txq *q, u64 mask,
+					u64 val, u32 reply)
+{
+	struct cpl_set_tcb_field_core *cpl;
+	struct ulptx_idata *idata;
+	struct ulp_txpkt *txpkt;
+
+	/* ULP_TXPKT */
+	txpkt = pos;
+	txpkt->cmd_dest = htonl(ULPTX_CMD_V(ULP_TX_PKT) |
+				ULP_TXPKT_CHANNELID_V(tx_info->port_id) |
+				ULP_TXPKT_FID_V(q->q.cntxt_id) |
+				ULP_TXPKT_RO_F);
+	txpkt->len = htonl(DIV_ROUND_UP(CHCR_SET_TCB_FIELD_LEN, 16));
+
+	/* ULPTX_IDATA sub-command */
+	idata = (struct ulptx_idata *)(txpkt + 1);
+	idata->cmd_more = htonl(ULPTX_CMD_V(ULP_TX_SC_IMM));
+	idata->len = htonl(sizeof(*cpl));
+	pos = idata + 1;
+
+	cpl = pos;
+	/* CPL_SET_TCB_FIELD */
+	OPCODE_TID(cpl) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, tid));
+	cpl->reply_ctrl = htons(QUEUENO_V(tx_info->rx_qid) |
+			NO_REPLY_V(!reply));
+	cpl->word_cookie = htons(TCB_WORD_V(word));
+	cpl->mask = cpu_to_be64(mask);
+	cpl->val = cpu_to_be64(val);
+
+	/* ULPTX_NOOP */
+	idata = (struct ulptx_idata *)(cpl + 1);
+	idata->cmd_more = htonl(ULPTX_CMD_V(ULP_TX_SC_NOOP));
+	idata->len = htonl(0);
+	pos = idata + 1;
+
+	return pos;
+}
+
+
+/*
+ * chcr_write_cpl_set_tcb_ulp: update tcb values.
+ * TCB is responsible to create tcp headers, so all the related values
+ * should be correctly updated.
+ * @tx_info - driver specific tls info.
+ * @q - tx queue on which packet is going out.
+ * @tid - TCB identifier.
+ * @pos - current index where should we start writing.
+ * @word - TCB word.
+ * @mask - TCB word related mask.
+ * @val - TCB word related value.
+ * @reply - set 1 if looking for TP response.
+ * return - next position to write.
+ */
+static void *chcr_write_cpl_set_tcb_ulp(struct chcr_ktls_info *tx_info,
+					struct sge_eth_txq *q, u32 tid,
+					void *pos, u16 word, u64 mask,
+					u64 val, u32 reply)
+{
+	int left = (void *)q->q.stat - pos;
+
+	if (unlikely(left < CHCR_SET_TCB_FIELD_LEN)) {
+		if (!left) {
+			pos = q->q.desc;
+		} else {
+			u8 buf[48] = {0};
+
+			__chcr_write_cpl_set_tcb_ulp(tx_info, tid, buf, word, q,
+						     mask, val, reply);
+
+			return chcr_copy_to_txd(buf, &q->q, pos,
+						CHCR_SET_TCB_FIELD_LEN);
+		}
+	}
+
+	pos = __chcr_write_cpl_set_tcb_ulp(tx_info, tid, pos, word, q,
+					   mask, val, reply);
+
+	/* check again if we are at the end of the queue */
+	if (left == CHCR_SET_TCB_FIELD_LEN)
+		pos = q->q.desc;
+
+	return pos;
+}
+
+/*
+ * chcr_ktls_xmit_tcb_cpls: update tcb entry so that TP will create the header
+ * with updated values like tcp seq, ack, window etc.
+ * @tx_info - driver specific tls info.
+ * @q - TX queue.
+ * @tcp_seq
+ * @tcp_ack
+ * @tcp_win
+ * return: NETDEV_TX_BUSY/NET_TX_OK.
+ */
+static int chcr_ktls_xmit_tcb_cpls(struct chcr_ktls_info *tx_info,
+				   struct sge_eth_txq *q, u64 tcp_seq,
+				   u64 tcp_ack, u64 tcp_win, bool offset)
+{
+	bool first_wr = ((tx_info->prev_ack == 0) && (tx_info->prev_win == 0));
+	struct ch_ktls_port_stats_debug *port_stats;
+	u32 len, cpl = 0, ndesc, wr_len, wr_mid = 0;
+	struct fw_ulptx_wr *wr;
+	int credits;
+	void *pos;
+
+	wr_len = sizeof(*wr);
+	/* there can be max 4 cpls, check if we have enough credits */
+	len = wr_len + 4 * roundup(CHCR_SET_TCB_FIELD_LEN, 16);
+	ndesc = DIV_ROUND_UP(len, 64);
+
+	credits = chcr_txq_avail(&q->q) - ndesc;
+	if (unlikely(credits < 0)) {
+		chcr_eth_txq_stop(q);
+		return NETDEV_TX_BUSY;
+	}
+
+	if (unlikely(credits < ETHTXQ_STOP_THRES)) {
+		chcr_eth_txq_stop(q);
+		wr_mid |= FW_WR_EQUEQ_F | FW_WR_EQUIQ_F;
+	}
+
+	pos = &q->q.desc[q->q.pidx];
+	/* make space for WR, we'll fill it later when we know all the cpls
+	 * being sent out and have complete length.
+	 */
+	wr = pos;
+	pos += wr_len;
+	/* update tx_max if its a re-transmit or the first wr */
+	if (first_wr || tcp_seq != tx_info->prev_seq) {
+		pos = chcr_write_cpl_set_tcb_ulp(tx_info, q, tx_info->tid, pos,
+						 TCB_TX_MAX_W,
+						 TCB_TX_MAX_V(TCB_TX_MAX_M),
+						 TCB_TX_MAX_V(tcp_seq), 0);
+		cpl++;
+	}
+	/* reset snd una if it's a re-transmit pkt */
+	if (tcp_seq != tx_info->prev_seq || offset) {
+		/* reset snd_una */
+		port_stats =
+			&tx_info->adap->ch_ktls_stats.ktls_port[tx_info->port_id];
+		pos = chcr_write_cpl_set_tcb_ulp(tx_info, q, tx_info->tid, pos,
+						 TCB_SND_UNA_RAW_W,
+						 TCB_SND_UNA_RAW_V
+						 (TCB_SND_UNA_RAW_M),
+						 TCB_SND_UNA_RAW_V(0), 0);
+		if (tcp_seq != tx_info->prev_seq)
+			atomic64_inc(&port_stats->ktls_tx_ooo);
+		cpl++;
+	}
+	/* update ack */
+	if (first_wr || tx_info->prev_ack != tcp_ack) {
+		pos = chcr_write_cpl_set_tcb_ulp(tx_info, q, tx_info->tid, pos,
+						 TCB_RCV_NXT_W,
+						 TCB_RCV_NXT_V(TCB_RCV_NXT_M),
+						 TCB_RCV_NXT_V(tcp_ack), 0);
+		tx_info->prev_ack = tcp_ack;
+		cpl++;
+	}
+	/* update receive window */
+	if (first_wr || tx_info->prev_win != tcp_win) {
+		chcr_write_cpl_set_tcb_ulp(tx_info, q, tx_info->tid, pos,
+					   TCB_RCV_WND_W,
+					   TCB_RCV_WND_V(TCB_RCV_WND_M),
+					   TCB_RCV_WND_V(tcp_win), 0);
+		tx_info->prev_win = tcp_win;
+		cpl++;
+	}
+
+	if (cpl) {
+		/* get the actual length */
+		len = wr_len + cpl * roundup(CHCR_SET_TCB_FIELD_LEN, 16);
+		/* ULPTX wr */
+		wr->op_to_compl = htonl(FW_WR_OP_V(FW_ULPTX_WR));
+		wr->cookie = 0;
+		/* fill len in wr field */
+		wr->flowid_len16 = htonl(wr_mid |
+					 FW_WR_LEN16_V(DIV_ROUND_UP(len, 16)));
+
+		ndesc = DIV_ROUND_UP(len, 64);
+		chcr_txq_advance(&q->q, ndesc);
+		cxgb4_ring_tx_db(tx_info->adap, &q->q, ndesc);
+	}
+	return 0;
+}
+
+/*
+ * chcr_ktls_get_tx_flits
+ * returns number of flits to be sent out, it includes key context length, WR
+ * size and skb fragments.
+ */
+static unsigned int
+chcr_ktls_get_tx_flits(u32 nr_frags, unsigned int key_ctx_len)
+{
+	return chcr_sgl_len(nr_frags) +
+	       DIV_ROUND_UP(key_ctx_len + CHCR_KTLS_WR_SIZE, 8);
+}
+
+/*
+ * chcr_ktls_check_tcp_options: To check if there is any TCP option available
+ * other than timestamp.
+ * @skb - skb contains partial record..
+ * return: 1 / 0
+ */
+static int
+chcr_ktls_check_tcp_options(struct tcphdr *tcp)
+{
+	int cnt, opt, optlen;
+	u_char *cp;
+
+	cp = (u_char *)(tcp + 1);
+	cnt = (tcp->doff << 2) - sizeof(struct tcphdr);
+	for (; cnt > 0; cnt -= optlen, cp += optlen) {
+		opt = cp[0];
+		if (opt == TCPOPT_EOL)
+			break;
+		if (opt == TCPOPT_NOP) {
+			optlen = 1;
+		} else {
+			if (cnt < 2)
+				break;
+			optlen = cp[1];
+			if (optlen < 2 || optlen > cnt)
+				break;
+		}
+		switch (opt) {
+		case TCPOPT_NOP:
+			break;
+		default:
+			return 1;
+		}
+	}
+	return 0;
+}
+
+/*
+ * chcr_ktls_write_tcp_options : TP can't send out all the options, we need to
+ * send out separately.
+ * @tx_info - driver specific tls info.
+ * @skb - skb contains partial record..
+ * @q - TX queue.
+ * @tx_chan - channel number.
+ * return: NETDEV_TX_OK/NETDEV_TX_BUSY.
+ */
+static int
+chcr_ktls_write_tcp_options(struct chcr_ktls_info *tx_info, struct sk_buff *skb,
+			    struct sge_eth_txq *q, uint32_t tx_chan)
+{
+	struct fw_eth_tx_pkt_wr *wr;
+	struct cpl_tx_pkt_core *cpl;
+	u32 ctrl, iplen, maclen;
+	struct ipv6hdr *ip6;
+	unsigned int ndesc;
+	struct tcphdr *tcp;
+	int len16, pktlen;
+	struct iphdr *ip;
+	u32 wr_mid = 0;
+	int credits;
+	u8 buf[150];
+	u64 cntrl1;
+	void *pos;
+
+	iplen = skb_network_header_len(skb);
+	maclen = skb_mac_header_len(skb);
+
+	/* packet length = eth hdr len + ip hdr len + tcp hdr len
+	 * (including options).
+	 */
+	pktlen = skb_tcp_all_headers(skb);
+
+	ctrl = sizeof(*cpl) + pktlen;
+	len16 = DIV_ROUND_UP(sizeof(*wr) + ctrl, 16);
+	/* check how many descriptors needed */
+	ndesc = DIV_ROUND_UP(len16, 4);
+
+	credits = chcr_txq_avail(&q->q) - ndesc;
+	if (unlikely(credits < 0)) {
+		chcr_eth_txq_stop(q);
+		return NETDEV_TX_BUSY;
+	}
+
+	if (unlikely(credits < ETHTXQ_STOP_THRES)) {
+		chcr_eth_txq_stop(q);
+		wr_mid |= FW_WR_EQUEQ_F | FW_WR_EQUIQ_F;
+	}
+
+	pos = &q->q.desc[q->q.pidx];
+	wr = pos;
+
+	/* Firmware work request header */
+	wr->op_immdlen = htonl(FW_WR_OP_V(FW_ETH_TX_PKT_WR) |
+			       FW_WR_IMMDLEN_V(ctrl));
+
+	wr->equiq_to_len16 = htonl(wr_mid | FW_WR_LEN16_V(len16));
+	wr->r3 = 0;
+
+	cpl = (void *)(wr + 1);
+
+	/* CPL header */
+	cpl->ctrl0 = htonl(TXPKT_OPCODE_V(CPL_TX_PKT) | TXPKT_INTF_V(tx_chan) |
+			   TXPKT_PF_V(tx_info->adap->pf));
+	cpl->pack = 0;
+	cpl->len = htons(pktlen);
+
+	memcpy(buf, skb->data, pktlen);
+	if (!IS_ENABLED(CONFIG_IPV6) || tx_info->ip_family == AF_INET) {
+		/* we need to correct ip header len */
+		ip = (struct iphdr *)(buf + maclen);
+		ip->tot_len = htons(pktlen - maclen);
+		cntrl1 = TXPKT_CSUM_TYPE_V(TX_CSUM_TCPIP);
+	} else {
+		ip6 = (struct ipv6hdr *)(buf + maclen);
+		ip6->payload_len = htons(pktlen - maclen - iplen);
+		cntrl1 = TXPKT_CSUM_TYPE_V(TX_CSUM_TCPIP6);
+	}
+
+	cntrl1 |= T6_TXPKT_ETHHDR_LEN_V(maclen - ETH_HLEN) |
+		  TXPKT_IPHDR_LEN_V(iplen);
+	/* checksum offload */
+	cpl->ctrl1 = cpu_to_be64(cntrl1);
+
+	pos = cpl + 1;
+
+	/* now take care of the tcp header, if fin is not set then clear push
+	 * bit as well, and if fin is set, it will be sent at the last so we
+	 * need to update the tcp sequence number as per the last packet.
+	 */
+	tcp = (struct tcphdr *)(buf + maclen + iplen);
+
+	if (!tcp->fin)
+		tcp->psh = 0;
+	else
+		tcp->seq = htonl(tx_info->prev_seq);
+
+	chcr_copy_to_txd(buf, &q->q, pos, pktlen);
+
+	chcr_txq_advance(&q->q, ndesc);
+	cxgb4_ring_tx_db(tx_info->adap, &q->q, ndesc);
+	return 0;
+}
+
+/*
+ * chcr_ktls_xmit_wr_complete: This sends out the complete record. If an skb
+ * received has partial end part of the record, send out the complete record, so
+ * that crypto block will be able to generate TAG/HASH.
+ * @skb - segment which has complete or partial end part.
+ * @tx_info - driver specific tls info.
+ * @q - TX queue.
+ * @tcp_seq
+ * @tcp_push - tcp push bit.
+ * @mss - segment size.
+ * return: NETDEV_TX_BUSY/NET_TX_OK.
+ */
+static int chcr_ktls_xmit_wr_complete(struct sk_buff *skb,
+				      struct chcr_ktls_info *tx_info,
+				      struct sge_eth_txq *q, u32 tcp_seq,
+				      bool is_last_wr, u32 data_len,
+				      u32 skb_offset, u32 nfrags,
+				      bool tcp_push, u32 mss)
+{
+	u32 len16, wr_mid = 0, flits = 0, ndesc, cipher_start;
+	struct adapter *adap = tx_info->adap;
+	int credits, left, last_desc;
+	struct tx_sw_desc *sgl_sdesc;
+	struct cpl_tx_data *tx_data;
+	struct cpl_tx_sec_pdu *cpl;
+	struct ulptx_idata *idata;
+	struct ulp_txpkt *ulptx;
+	struct fw_ulptx_wr *wr;
+	void *pos;
+	u64 *end;
+
+	/* get the number of flits required */
+	flits = chcr_ktls_get_tx_flits(nfrags, tx_info->key_ctx_len);
+	/* number of descriptors */
+	ndesc = chcr_flits_to_desc(flits);
+	/* check if enough credits available */
+	credits = chcr_txq_avail(&q->q) - ndesc;
+	if (unlikely(credits < 0)) {
+		chcr_eth_txq_stop(q);
+		return NETDEV_TX_BUSY;
+	}
+
+	if (unlikely(credits < ETHTXQ_STOP_THRES)) {
+		/* Credits are below the threshold values, stop the queue after
+		 * injecting the Work Request for this packet.
+		 */
+		chcr_eth_txq_stop(q);
+		wr_mid |= FW_WR_EQUEQ_F | FW_WR_EQUIQ_F;
+	}
+
+	last_desc = q->q.pidx + ndesc - 1;
+	if (last_desc >= q->q.size)
+		last_desc -= q->q.size;
+	sgl_sdesc = &q->q.sdesc[last_desc];
+
+	if (unlikely(cxgb4_map_skb(adap->pdev_dev, skb, sgl_sdesc->addr) < 0)) {
+		memset(sgl_sdesc->addr, 0, sizeof(sgl_sdesc->addr));
+		q->mapping_err++;
+		return NETDEV_TX_BUSY;
+	}
+
+	if (!is_last_wr)
+		skb_get(skb);
+
+	pos = &q->q.desc[q->q.pidx];
+	end = (u64 *)pos + flits;
+	/* FW_ULPTX_WR */
+	wr = pos;
+	/* WR will need len16 */
+	len16 = DIV_ROUND_UP(flits, 2);
+	wr->op_to_compl = htonl(FW_WR_OP_V(FW_ULPTX_WR));
+	wr->flowid_len16 = htonl(wr_mid | FW_WR_LEN16_V(len16));
+	wr->cookie = 0;
+	pos += sizeof(*wr);
+	/* ULP_TXPKT */
+	ulptx = pos;
+	ulptx->cmd_dest = htonl(ULPTX_CMD_V(ULP_TX_PKT) |
+				ULP_TXPKT_CHANNELID_V(tx_info->port_id) |
+				ULP_TXPKT_FID_V(q->q.cntxt_id) |
+				ULP_TXPKT_RO_F);
+	ulptx->len = htonl(len16 - 1);
+	/* ULPTX_IDATA sub-command */
+	idata = (struct ulptx_idata *)(ulptx + 1);
+	idata->cmd_more = htonl(ULPTX_CMD_V(ULP_TX_SC_IMM) | ULP_TX_SC_MORE_F);
+	/* idata length will include cpl_tx_sec_pdu + key context size +
+	 * cpl_tx_data header.
+	 */
+	idata->len = htonl(sizeof(*cpl) + tx_info->key_ctx_len +
+			   sizeof(*tx_data));
+	/* SEC CPL */
+	cpl = (struct cpl_tx_sec_pdu *)(idata + 1);
+	cpl->op_ivinsrtofst =
+		htonl(CPL_TX_SEC_PDU_OPCODE_V(CPL_TX_SEC_PDU) |
+		      CPL_TX_SEC_PDU_CPLLEN_V(CHCR_CPL_TX_SEC_PDU_LEN_64BIT) |
+		      CPL_TX_SEC_PDU_PLACEHOLDER_V(1) |
+		      CPL_TX_SEC_PDU_IVINSRTOFST_V(TLS_HEADER_SIZE + 1));
+	cpl->pldlen = htonl(data_len);
+
+	/* encryption should start after tls header size + iv size */
+	cipher_start = TLS_HEADER_SIZE + tx_info->iv_size + 1;
+
+	cpl->aadstart_cipherstop_hi =
+		htonl(CPL_TX_SEC_PDU_AADSTART_V(1) |
+		      CPL_TX_SEC_PDU_AADSTOP_V(TLS_HEADER_SIZE) |
+		      CPL_TX_SEC_PDU_CIPHERSTART_V(cipher_start));
+
+	/* authentication will also start after tls header + iv size */
+	cpl->cipherstop_lo_authinsert =
+	htonl(CPL_TX_SEC_PDU_AUTHSTART_V(cipher_start) |
+	      CPL_TX_SEC_PDU_AUTHSTOP_V(TLS_CIPHER_AES_GCM_128_TAG_SIZE) |
+	      CPL_TX_SEC_PDU_AUTHINSERT_V(TLS_CIPHER_AES_GCM_128_TAG_SIZE));
+
+	/* These two flits are actually a CPL_TLS_TX_SCMD_FMT. */
+	cpl->seqno_numivs = htonl(tx_info->scmd0_seqno_numivs);
+	cpl->ivgen_hdrlen = htonl(tx_info->scmd0_ivgen_hdrlen);
+	cpl->scmd1 = cpu_to_be64(tx_info->record_no);
+
+	pos = cpl + 1;
+	/* check if space left to fill the keys */
+	left = (void *)q->q.stat - pos;
+	if (!left) {
+		left = (void *)end - (void *)q->q.stat;
+		pos = q->q.desc;
+		end = pos + left;
+	}
+
+	pos = chcr_copy_to_txd(&tx_info->key_ctx, &q->q, pos,
+			       tx_info->key_ctx_len);
+	left = (void *)q->q.stat - pos;
+
+	if (!left) {
+		left = (void *)end - (void *)q->q.stat;
+		pos = q->q.desc;
+		end = pos + left;
+	}
+	/* CPL_TX_DATA */
+	tx_data = (void *)pos;
+	OPCODE_TID(tx_data) = htonl(MK_OPCODE_TID(CPL_TX_DATA, tx_info->tid));
+	tx_data->len = htonl(TX_DATA_MSS_V(mss) | TX_LENGTH_V(data_len));
+
+	tx_data->rsvd = htonl(tcp_seq);
+
+	tx_data->flags = htonl(TX_BYPASS_F);
+	if (tcp_push)
+		tx_data->flags |= htonl(TX_PUSH_F | TX_SHOVE_F);
+
+	/* check left again, it might go beyond queue limit */
+	pos = tx_data + 1;
+	left = (void *)q->q.stat - pos;
+
+	/* check the position again */
+	if (!left) {
+		left = (void *)end - (void *)q->q.stat;
+		pos = q->q.desc;
+		end = pos + left;
+	}
+
+	/* send the complete packet except the header */
+	cxgb4_write_partial_sgl(skb, &q->q, pos, end, sgl_sdesc->addr,
+				skb_offset, data_len);
+	sgl_sdesc->skb = skb;
+
+	chcr_txq_advance(&q->q, ndesc);
+	cxgb4_ring_tx_db(adap, &q->q, ndesc);
+	atomic64_inc(&adap->ch_ktls_stats.ktls_tx_send_records);
+
+	return 0;
+}
+
+/*
+ * chcr_ktls_xmit_wr_short: This is to send out partial records. If its
+ * a middle part of a record, fetch the prior data to make it 16 byte aligned
+ * and then only send it out.
+ *
+ * @skb - skb contains partial record..
+ * @tx_info - driver specific tls info.
+ * @q - TX queue.
+ * @tcp_seq
+ * @tcp_push - tcp push bit.
+ * @mss - segment size.
+ * @tls_rec_offset - offset from start of the tls record.
+ * @perior_data - data before the current segment, required to make this record
+ *		  16 byte aligned.
+ * @prior_data_len - prior_data length (less than 16)
+ * return: NETDEV_TX_BUSY/NET_TX_OK.
+ */
+static int chcr_ktls_xmit_wr_short(struct sk_buff *skb,
+				   struct chcr_ktls_info *tx_info,
+				   struct sge_eth_txq *q,
+				   u32 tcp_seq, bool tcp_push, u32 mss,
+				   u32 tls_rec_offset, u8 *prior_data,
+				   u32 prior_data_len, u32 data_len,
+				   u32 skb_offset)
+{
+	u32 len16, wr_mid = 0, cipher_start, nfrags;
+	struct adapter *adap = tx_info->adap;
+	unsigned int flits = 0, ndesc;
+	int credits, left, last_desc;
+	struct tx_sw_desc *sgl_sdesc;
+	struct cpl_tx_data *tx_data;
+	struct cpl_tx_sec_pdu *cpl;
+	struct ulptx_idata *idata;
+	struct ulp_txpkt *ulptx;
+	struct fw_ulptx_wr *wr;
+	__be64 iv_record;
+	void *pos;
+	u64 *end;
+
+	nfrags = chcr_get_nfrags_to_send(skb, skb_offset, data_len);
+	/* get the number of flits required, it's a partial record so 2 flits
+	 * (AES_BLOCK_SIZE) will be added.
+	 */
+	flits = chcr_ktls_get_tx_flits(nfrags, tx_info->key_ctx_len) + 2;
+	/* get the correct 8 byte IV of this record */
+	iv_record = cpu_to_be64(tx_info->iv + tx_info->record_no);
+	/* If it's a middle record and not 16 byte aligned to run AES CTR, need
+	 * to make it 16 byte aligned. So atleadt 2 extra flits of immediate
+	 * data will be added.
+	 */
+	if (prior_data_len)
+		flits += 2;
+	/* number of descriptors */
+	ndesc = chcr_flits_to_desc(flits);
+	/* check if enough credits available */
+	credits = chcr_txq_avail(&q->q) - ndesc;
+	if (unlikely(credits < 0)) {
+		chcr_eth_txq_stop(q);
+		return NETDEV_TX_BUSY;
+	}
+
+	if (unlikely(credits < ETHTXQ_STOP_THRES)) {
+		chcr_eth_txq_stop(q);
+		wr_mid |= FW_WR_EQUEQ_F | FW_WR_EQUIQ_F;
+	}
+
+	last_desc = q->q.pidx + ndesc - 1;
+	if (last_desc >= q->q.size)
+		last_desc -= q->q.size;
+	sgl_sdesc = &q->q.sdesc[last_desc];
+
+	if (unlikely(cxgb4_map_skb(adap->pdev_dev, skb, sgl_sdesc->addr) < 0)) {
+		memset(sgl_sdesc->addr, 0, sizeof(sgl_sdesc->addr));
+		q->mapping_err++;
+		return NETDEV_TX_BUSY;
+	}
+
+	pos = &q->q.desc[q->q.pidx];
+	end = (u64 *)pos + flits;
+	/* FW_ULPTX_WR */
+	wr = pos;
+	/* WR will need len16 */
+	len16 = DIV_ROUND_UP(flits, 2);
+	wr->op_to_compl = htonl(FW_WR_OP_V(FW_ULPTX_WR));
+	wr->flowid_len16 = htonl(wr_mid | FW_WR_LEN16_V(len16));
+	wr->cookie = 0;
+	pos += sizeof(*wr);
+	/* ULP_TXPKT */
+	ulptx = pos;
+	ulptx->cmd_dest = htonl(ULPTX_CMD_V(ULP_TX_PKT) |
+				ULP_TXPKT_CHANNELID_V(tx_info->port_id) |
+				ULP_TXPKT_FID_V(q->q.cntxt_id) |
+				ULP_TXPKT_RO_F);
+	ulptx->len = htonl(len16 - 1);
+	/* ULPTX_IDATA sub-command */
+	idata = (struct ulptx_idata *)(ulptx + 1);
+	idata->cmd_more = htonl(ULPTX_CMD_V(ULP_TX_SC_IMM) | ULP_TX_SC_MORE_F);
+	/* idata length will include cpl_tx_sec_pdu + key context size +
+	 * cpl_tx_data header.
+	 */
+	idata->len = htonl(sizeof(*cpl) + tx_info->key_ctx_len +
+			   sizeof(*tx_data) + AES_BLOCK_LEN + prior_data_len);
+	/* SEC CPL */
+	cpl = (struct cpl_tx_sec_pdu *)(idata + 1);
+	/* cipher start will have tls header + iv size extra if its a header
+	 * part of tls record. else only 16 byte IV will be added.
+	 */
+	cipher_start =
+		AES_BLOCK_LEN + 1 +
+		(!tls_rec_offset ? TLS_HEADER_SIZE + tx_info->iv_size : 0);
+
+	cpl->op_ivinsrtofst =
+		htonl(CPL_TX_SEC_PDU_OPCODE_V(CPL_TX_SEC_PDU) |
+		      CPL_TX_SEC_PDU_CPLLEN_V(CHCR_CPL_TX_SEC_PDU_LEN_64BIT) |
+		      CPL_TX_SEC_PDU_IVINSRTOFST_V(1));
+	cpl->pldlen = htonl(data_len + AES_BLOCK_LEN + prior_data_len);
+	cpl->aadstart_cipherstop_hi =
+		htonl(CPL_TX_SEC_PDU_CIPHERSTART_V(cipher_start));
+	cpl->cipherstop_lo_authinsert = 0;
+	/* These two flits are actually a CPL_TLS_TX_SCMD_FMT. */
+	cpl->seqno_numivs = htonl(tx_info->scmd0_short_seqno_numivs);
+	cpl->ivgen_hdrlen = htonl(tx_info->scmd0_short_ivgen_hdrlen);
+	cpl->scmd1 = 0;
+
+	pos = cpl + 1;
+	/* check if space left to fill the keys */
+	left = (void *)q->q.stat - pos;
+	if (!left) {
+		left = (void *)end - (void *)q->q.stat;
+		pos = q->q.desc;
+		end = pos + left;
+	}
+
+	pos = chcr_copy_to_txd(&tx_info->key_ctx, &q->q, pos,
+			       tx_info->key_ctx_len);
+	left = (void *)q->q.stat - pos;
+
+	if (!left) {
+		left = (void *)end - (void *)q->q.stat;
+		pos = q->q.desc;
+		end = pos + left;
+	}
+	/* CPL_TX_DATA */
+	tx_data = (void *)pos;
+	OPCODE_TID(tx_data) = htonl(MK_OPCODE_TID(CPL_TX_DATA, tx_info->tid));
+	tx_data->len = htonl(TX_DATA_MSS_V(mss) |
+			     TX_LENGTH_V(data_len + prior_data_len));
+	tx_data->rsvd = htonl(tcp_seq);
+	tx_data->flags = htonl(TX_BYPASS_F);
+	if (tcp_push)
+		tx_data->flags |= htonl(TX_PUSH_F | TX_SHOVE_F);
+
+	/* check left again, it might go beyond queue limit */
+	pos = tx_data + 1;
+	left = (void *)q->q.stat - pos;
+
+	/* check the position again */
+	if (!left) {
+		left = (void *)end - (void *)q->q.stat;
+		pos = q->q.desc;
+		end = pos + left;
+	}
+	/* copy the 16 byte IV for AES-CTR, which includes 4 bytes of salt, 8
+	 * bytes of actual IV and 4 bytes of 16 byte-sequence.
+	 */
+	memcpy(pos, tx_info->key_ctx.salt, tx_info->salt_size);
+	memcpy(pos + tx_info->salt_size, &iv_record, tx_info->iv_size);
+	*(__be32 *)(pos + tx_info->salt_size + tx_info->iv_size) =
+		htonl(2 + (tls_rec_offset ? ((tls_rec_offset -
+		(TLS_HEADER_SIZE + tx_info->iv_size)) / AES_BLOCK_LEN) : 0));
+
+	pos += 16;
+	/* Prior_data_len will always be less than 16 bytes, fill the
+	 * prio_data_len after AES_CTRL_BLOCK and clear the remaining length
+	 * to 0.
+	 */
+	if (prior_data_len)
+		pos = chcr_copy_to_txd(prior_data, &q->q, pos, 16);
+	/* send the complete packet except the header */
+	cxgb4_write_partial_sgl(skb, &q->q, pos, end, sgl_sdesc->addr,
+				skb_offset, data_len);
+	sgl_sdesc->skb = skb;
+
+	chcr_txq_advance(&q->q, ndesc);
+	cxgb4_ring_tx_db(adap, &q->q, ndesc);
+
+	return 0;
+}
+
+/*
+ * chcr_ktls_tx_plaintxt: This handler will take care of the records which has
+ * only plain text (only tls header and iv)
+ * @tx_info - driver specific tls info.
+ * @skb - skb contains partial record..
+ * @tcp_seq
+ * @mss - segment size.
+ * @tcp_push - tcp push bit.
+ * @q - TX queue.
+ * @port_id : port number
+ * @perior_data - data before the current segment, required to make this record
+ *		 16 byte aligned.
+ * @prior_data_len - prior_data length (less than 16)
+ * return: NETDEV_TX_BUSY/NET_TX_OK.
+ */
+static int chcr_ktls_tx_plaintxt(struct chcr_ktls_info *tx_info,
+				 struct sk_buff *skb, u32 tcp_seq, u32 mss,
+				 bool tcp_push, struct sge_eth_txq *q,
+				 u32 port_id, u8 *prior_data,
+				 u32 data_len, u32 skb_offset,
+				 u32 prior_data_len)
+{
+	int credits, left, len16, last_desc;
+	unsigned int flits = 0, ndesc;
+	struct tx_sw_desc *sgl_sdesc;
+	struct cpl_tx_data *tx_data;
+	struct ulptx_idata *idata;
+	struct ulp_txpkt *ulptx;
+	struct fw_ulptx_wr *wr;
+	u32 wr_mid = 0, nfrags;
+	void *pos;
+	u64 *end;
+
+	flits = DIV_ROUND_UP(CHCR_PLAIN_TX_DATA_LEN, 8);
+	nfrags = chcr_get_nfrags_to_send(skb, skb_offset, data_len);
+	flits += chcr_sgl_len(nfrags);
+	if (prior_data_len)
+		flits += 2;
+
+	/* WR will need len16 */
+	len16 = DIV_ROUND_UP(flits, 2);
+	/* check how many descriptors needed */
+	ndesc = DIV_ROUND_UP(flits, 8);
+
+	credits = chcr_txq_avail(&q->q) - ndesc;
+	if (unlikely(credits < 0)) {
+		chcr_eth_txq_stop(q);
+		return NETDEV_TX_BUSY;
+	}
+
+	if (unlikely(credits < ETHTXQ_STOP_THRES)) {
+		chcr_eth_txq_stop(q);
+		wr_mid |= FW_WR_EQUEQ_F | FW_WR_EQUIQ_F;
+	}
+
+	last_desc = q->q.pidx + ndesc - 1;
+	if (last_desc >= q->q.size)
+		last_desc -= q->q.size;
+	sgl_sdesc = &q->q.sdesc[last_desc];
+
+	if (unlikely(cxgb4_map_skb(tx_info->adap->pdev_dev, skb,
+				   sgl_sdesc->addr) < 0)) {
+		memset(sgl_sdesc->addr, 0, sizeof(sgl_sdesc->addr));
+		q->mapping_err++;
+		return NETDEV_TX_BUSY;
+	}
+
+	pos = &q->q.desc[q->q.pidx];
+	end = (u64 *)pos + flits;
+	/* FW_ULPTX_WR */
+	wr = pos;
+	wr->op_to_compl = htonl(FW_WR_OP_V(FW_ULPTX_WR));
+	wr->flowid_len16 = htonl(wr_mid | FW_WR_LEN16_V(len16));
+	wr->cookie = 0;
+	/* ULP_TXPKT */
+	ulptx = (struct ulp_txpkt *)(wr + 1);
+	ulptx->cmd_dest = htonl(ULPTX_CMD_V(ULP_TX_PKT) |
+			ULP_TXPKT_DATAMODIFY_V(0) |
+			ULP_TXPKT_CHANNELID_V(tx_info->port_id) |
+			ULP_TXPKT_DEST_V(0) |
+			ULP_TXPKT_FID_V(q->q.cntxt_id) | ULP_TXPKT_RO_V(1));
+	ulptx->len = htonl(len16 - 1);
+	/* ULPTX_IDATA sub-command */
+	idata = (struct ulptx_idata *)(ulptx + 1);
+	idata->cmd_more = htonl(ULPTX_CMD_V(ULP_TX_SC_IMM) | ULP_TX_SC_MORE_F);
+	idata->len = htonl(sizeof(*tx_data) + prior_data_len);
+	/* CPL_TX_DATA */
+	tx_data = (struct cpl_tx_data *)(idata + 1);
+	OPCODE_TID(tx_data) = htonl(MK_OPCODE_TID(CPL_TX_DATA, tx_info->tid));
+	tx_data->len = htonl(TX_DATA_MSS_V(mss) |
+			     TX_LENGTH_V(data_len + prior_data_len));
+	/* set tcp seq number */
+	tx_data->rsvd = htonl(tcp_seq);
+	tx_data->flags = htonl(TX_BYPASS_F);
+	if (tcp_push)
+		tx_data->flags |= htonl(TX_PUSH_F | TX_SHOVE_F);
+
+	pos = tx_data + 1;
+	/* apart from prior_data_len, we should set remaining part of 16 bytes
+	 * to be zero.
+	 */
+	if (prior_data_len)
+		pos = chcr_copy_to_txd(prior_data, &q->q, pos, 16);
+
+	/* check left again, it might go beyond queue limit */
+	left = (void *)q->q.stat - pos;
+
+	/* check the position again */
+	if (!left) {
+		left = (void *)end - (void *)q->q.stat;
+		pos = q->q.desc;
+		end = pos + left;
+	}
+	/* send the complete packet including the header */
+	cxgb4_write_partial_sgl(skb, &q->q, pos, end, sgl_sdesc->addr,
+				skb_offset, data_len);
+	sgl_sdesc->skb = skb;
+
+	chcr_txq_advance(&q->q, ndesc);
+	cxgb4_ring_tx_db(tx_info->adap, &q->q, ndesc);
+	return 0;
+}
+
+static int chcr_ktls_tunnel_pkt(struct chcr_ktls_info *tx_info,
+				struct sk_buff *skb,
+				struct sge_eth_txq *q)
+{
+	u32 ctrl, iplen, maclen, wr_mid = 0, len16;
+	struct tx_sw_desc *sgl_sdesc;
+	struct fw_eth_tx_pkt_wr *wr;
+	struct cpl_tx_pkt_core *cpl;
+	unsigned int flits, ndesc;
+	int credits, last_desc;
+	u64 cntrl1, *end;
+	void *pos;
+
+	ctrl = sizeof(*cpl);
+	flits = DIV_ROUND_UP(sizeof(*wr) + ctrl, 8);
+
+	flits += chcr_sgl_len(skb_shinfo(skb)->nr_frags + 1);
+	len16 = DIV_ROUND_UP(flits, 2);
+	/* check how many descriptors needed */
+	ndesc = DIV_ROUND_UP(flits, 8);
+
+	credits = chcr_txq_avail(&q->q) - ndesc;
+	if (unlikely(credits < 0)) {
+		chcr_eth_txq_stop(q);
+		return -ENOMEM;
+	}
+
+	if (unlikely(credits < ETHTXQ_STOP_THRES)) {
+		chcr_eth_txq_stop(q);
+		wr_mid |= FW_WR_EQUEQ_F | FW_WR_EQUIQ_F;
+	}
+
+	last_desc = q->q.pidx + ndesc - 1;
+	if (last_desc >= q->q.size)
+		last_desc -= q->q.size;
+	sgl_sdesc = &q->q.sdesc[last_desc];
+
+	if (unlikely(cxgb4_map_skb(tx_info->adap->pdev_dev, skb,
+				   sgl_sdesc->addr) < 0)) {
+		memset(sgl_sdesc->addr, 0, sizeof(sgl_sdesc->addr));
+		q->mapping_err++;
+		return -ENOMEM;
+	}
+
+	iplen = skb_network_header_len(skb);
+	maclen = skb_mac_header_len(skb);
+
+	pos = &q->q.desc[q->q.pidx];
+	end = (u64 *)pos + flits;
+	wr = pos;
+
+	/* Firmware work request header */
+	wr->op_immdlen = htonl(FW_WR_OP_V(FW_ETH_TX_PKT_WR) |
+			       FW_WR_IMMDLEN_V(ctrl));
+
+	wr->equiq_to_len16 = htonl(wr_mid | FW_WR_LEN16_V(len16));
+	wr->r3 = 0;
+
+	cpl = (void *)(wr + 1);
+
+	/* CPL header */
+	cpl->ctrl0 = htonl(TXPKT_OPCODE_V(CPL_TX_PKT) |
+			   TXPKT_INTF_V(tx_info->tx_chan) |
+			   TXPKT_PF_V(tx_info->adap->pf));
+	cpl->pack = 0;
+	cntrl1 = TXPKT_CSUM_TYPE_V(tx_info->ip_family == AF_INET ?
+				   TX_CSUM_TCPIP : TX_CSUM_TCPIP6);
+	cntrl1 |= T6_TXPKT_ETHHDR_LEN_V(maclen - ETH_HLEN) |
+		  TXPKT_IPHDR_LEN_V(iplen);
+	/* checksum offload */
+	cpl->ctrl1 = cpu_to_be64(cntrl1);
+	cpl->len = htons(skb->len);
+
+	pos = cpl + 1;
+
+	cxgb4_write_sgl(skb, &q->q, pos, end, 0, sgl_sdesc->addr);
+	sgl_sdesc->skb = skb;
+	chcr_txq_advance(&q->q, ndesc);
+	cxgb4_ring_tx_db(tx_info->adap, &q->q, ndesc);
+	return 0;
+}
+
+/*
+ * chcr_ktls_copy_record_in_skb
+ * @nskb - new skb where the frags to be added.
+ * @skb - old skb, to copy socket and destructor details.
+ * @record - specific record which has complete 16k record in frags.
+ */
+static void chcr_ktls_copy_record_in_skb(struct sk_buff *nskb,
+					 struct sk_buff *skb,
+					 struct tls_record_info *record)
+{
+	int i = 0;
+
+	for (i = 0; i < record->num_frags; i++) {
+		skb_shinfo(nskb)->frags[i] = record->frags[i];
+		/* increase the frag ref count */
+		__skb_frag_ref(&skb_shinfo(nskb)->frags[i]);
+	}
+
+	skb_shinfo(nskb)->nr_frags = record->num_frags;
+	nskb->data_len = record->len;
+	nskb->len += record->len;
+	nskb->truesize += record->len;
+	nskb->sk = skb->sk;
+	nskb->destructor = skb->destructor;
+	refcount_add(nskb->truesize, &nskb->sk->sk_wmem_alloc);
+}
+
+/*
+ * chcr_end_part_handler: This handler will handle the record which
+ * is complete or if record's end part is received. T6 adapter has a issue that
+ * it can't send out TAG with partial record so if its an end part then we have
+ * to send TAG as well and for which we need to fetch the complete record and
+ * send it to crypto module.
+ * @tx_info - driver specific tls info.
+ * @skb - skb contains partial record.
+ * @record - complete record of 16K size.
+ * @tcp_seq
+ * @mss - segment size in which TP needs to chop a packet.
+ * @tcp_push_no_fin - tcp push if fin is not set.
+ * @q - TX queue.
+ * @tls_end_offset - offset from end of the record.
+ * @last wr : check if this is the last part of the skb going out.
+ * return: NETDEV_TX_OK/NETDEV_TX_BUSY.
+ */
+static int chcr_end_part_handler(struct chcr_ktls_info *tx_info,
+				 struct sk_buff *skb,
+				 struct tls_record_info *record,
+				 u32 tcp_seq, int mss, bool tcp_push_no_fin,
+				 struct sge_eth_txq *q, u32 skb_offset,
+				 u32 tls_end_offset, bool last_wr)
+{
+	bool free_skb_if_tx_fails = false;
+	struct sk_buff *nskb = NULL;
+
+	/* check if it is a complete record */
+	if (tls_end_offset == record->len) {
+		nskb = skb;
+		atomic64_inc(&tx_info->adap->ch_ktls_stats.ktls_tx_complete_pkts);
+	} else {
+		nskb = alloc_skb(0, GFP_ATOMIC);
+		if (!nskb) {
+			dev_kfree_skb_any(skb);
+			return NETDEV_TX_BUSY;
+		}
+
+		/* copy complete record in skb */
+		chcr_ktls_copy_record_in_skb(nskb, skb, record);
+		/* packet is being sent from the beginning, update the tcp_seq
+		 * accordingly.
+		 */
+		tcp_seq = tls_record_start_seq(record);
+		/* reset skb offset */
+		skb_offset = 0;
+
+		if (last_wr)
+			dev_kfree_skb_any(skb);
+		else
+			free_skb_if_tx_fails = true;
+
+		last_wr = true;
+
+		atomic64_inc(&tx_info->adap->ch_ktls_stats.ktls_tx_end_pkts);
+	}
+
+	if (chcr_ktls_xmit_wr_complete(nskb, tx_info, q, tcp_seq,
+				       last_wr, record->len, skb_offset,
+				       record->num_frags,
+				       (last_wr && tcp_push_no_fin),
+				       mss)) {
+		if (free_skb_if_tx_fails)
+			dev_kfree_skb_any(skb);
+		goto out;
+	}
+	tx_info->prev_seq = record->end_seq;
+	return 0;
+out:
+	dev_kfree_skb_any(nskb);
+	return NETDEV_TX_BUSY;
+}
+
+/*
+ * chcr_short_record_handler: This handler will take care of the records which
+ * doesn't have end part (1st part or the middle part(/s) of a record). In such
+ * cases, AES CTR will be used in place of AES GCM to send out partial packet.
+ * This partial record might be the first part of the record, or the middle
+ * part. In case of middle record we should fetch the prior data to make it 16
+ * byte aligned. If it has a partial tls header or iv then get to the start of
+ * tls header. And if it has partial TAG, then remove the complete TAG and send
+ * only the payload.
+ * There is one more possibility that it gets a partial header, send that
+ * portion as a plaintext.
+ * @tx_info - driver specific tls info.
+ * @skb - skb contains partial record..
+ * @record - complete record of 16K size.
+ * @tcp_seq
+ * @mss - segment size in which TP needs to chop a packet.
+ * @tcp_push_no_fin - tcp push if fin is not set.
+ * @q - TX queue.
+ * @tls_end_offset - offset from end of the record.
+ * return: NETDEV_TX_OK/NETDEV_TX_BUSY.
+ */
+static int chcr_short_record_handler(struct chcr_ktls_info *tx_info,
+				     struct sk_buff *skb,
+				     struct tls_record_info *record,
+				     u32 tcp_seq, int mss, bool tcp_push_no_fin,
+				     u32 data_len, u32 skb_offset,
+				     struct sge_eth_txq *q, u32 tls_end_offset)
+{
+	u32 tls_rec_offset = tcp_seq - tls_record_start_seq(record);
+	u8 prior_data[16] = {0};
+	u32 prior_data_len = 0;
+
+	/* check if the skb is ending in middle of tag/HASH, its a big
+	 * trouble, send the packet before the HASH.
+	 */
+	int remaining_record = tls_end_offset - data_len;
+
+	if (remaining_record > 0 &&
+	    remaining_record < TLS_CIPHER_AES_GCM_128_TAG_SIZE) {
+		int trimmed_len = 0;
+
+		if (tls_end_offset > TLS_CIPHER_AES_GCM_128_TAG_SIZE)
+			trimmed_len = data_len -
+				      (TLS_CIPHER_AES_GCM_128_TAG_SIZE -
+				       remaining_record);
+		if (!trimmed_len)
+			return FALLBACK;
+
+		WARN_ON(trimmed_len > data_len);
+
+		data_len = trimmed_len;
+		atomic64_inc(&tx_info->adap->ch_ktls_stats.ktls_tx_trimmed_pkts);
+	}
+
+	/* check if it is only the header part. */
+	if (tls_rec_offset + data_len <= (TLS_HEADER_SIZE + tx_info->iv_size)) {
+		if (chcr_ktls_tx_plaintxt(tx_info, skb, tcp_seq, mss,
+					  tcp_push_no_fin, q,
+					  tx_info->port_id, prior_data,
+					  data_len, skb_offset, prior_data_len))
+			goto out;
+
+		tx_info->prev_seq = tcp_seq + data_len;
+		return 0;
+	}
+
+	/* check if the middle record's start point is 16 byte aligned. CTR
+	 * needs 16 byte aligned start point to start encryption.
+	 */
+	if (tls_rec_offset) {
+		/* there is an offset from start, means its a middle record */
+		int remaining = 0;
+
+		if (tls_rec_offset < (TLS_HEADER_SIZE + tx_info->iv_size)) {
+			prior_data_len = tls_rec_offset;
+			tls_rec_offset = 0;
+			remaining = 0;
+		} else {
+			prior_data_len =
+				(tls_rec_offset -
+				(TLS_HEADER_SIZE + tx_info->iv_size))
+				% AES_BLOCK_LEN;
+			remaining = tls_rec_offset - prior_data_len;
+		}
+
+		/* if prior_data_len is not zero, means we need to fetch prior
+		 * data to make this record 16 byte aligned, or we need to reach
+		 * to start offset.
+		 */
+		if (prior_data_len) {
+			int i = 0;
+			u8 *data = NULL;
+			skb_frag_t *f;
+			u8 *vaddr;
+			int frag_size = 0, frag_delta = 0;
+
+			while (remaining > 0) {
+				frag_size = skb_frag_size(&record->frags[i]);
+				if (remaining < frag_size)
+					break;
+
+				remaining -= frag_size;
+				i++;
+			}
+			f = &record->frags[i];
+			vaddr = kmap_atomic(skb_frag_page(f));
+
+			data = vaddr + skb_frag_off(f)  + remaining;
+			frag_delta = skb_frag_size(f) - remaining;
+
+			if (frag_delta >= prior_data_len) {
+				memcpy(prior_data, data, prior_data_len);
+				kunmap_atomic(vaddr);
+			} else {
+				memcpy(prior_data, data, frag_delta);
+				kunmap_atomic(vaddr);
+				/* get the next page */
+				f = &record->frags[i + 1];
+				vaddr = kmap_atomic(skb_frag_page(f));
+				data = vaddr + skb_frag_off(f);
+				memcpy(prior_data + frag_delta,
+				       data, (prior_data_len - frag_delta));
+				kunmap_atomic(vaddr);
+			}
+			/* reset tcp_seq as per the prior_data_required len */
+			tcp_seq -= prior_data_len;
+		}
+		atomic64_inc(&tx_info->adap->ch_ktls_stats.ktls_tx_middle_pkts);
+	} else {
+		atomic64_inc(&tx_info->adap->ch_ktls_stats.ktls_tx_start_pkts);
+	}
+
+	if (chcr_ktls_xmit_wr_short(skb, tx_info, q, tcp_seq, tcp_push_no_fin,
+				    mss, tls_rec_offset, prior_data,
+				    prior_data_len, data_len, skb_offset)) {
+		goto out;
+	}
+
+	tx_info->prev_seq = tcp_seq + data_len + prior_data_len;
+	return 0;
+out:
+	dev_kfree_skb_any(skb);
+	return NETDEV_TX_BUSY;
+}
+
+static int chcr_ktls_sw_fallback(struct sk_buff *skb,
+				 struct chcr_ktls_info *tx_info,
+				 struct sge_eth_txq *q)
+{
+	u32 data_len, skb_offset;
+	struct sk_buff *nskb;
+	struct tcphdr *th;
+
+	nskb = tls_encrypt_skb(skb);
+
+	if (!nskb)
+		return 0;
+
+	th = tcp_hdr(nskb);
+	skb_offset = skb_tcp_all_headers(nskb);
+	data_len = nskb->len - skb_offset;
+	skb_tx_timestamp(nskb);
+
+	if (chcr_ktls_tunnel_pkt(tx_info, nskb, q))
+		goto out;
+
+	tx_info->prev_seq = ntohl(th->seq) + data_len;
+	atomic64_inc(&tx_info->adap->ch_ktls_stats.ktls_tx_fallback);
+	return 0;
+out:
+	dev_kfree_skb_any(nskb);
+	return 0;
+}
+/* nic tls TX handler */
+static int chcr_ktls_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+	u32 tls_end_offset, tcp_seq, skb_data_len, skb_offset;
+	struct ch_ktls_port_stats_debug *port_stats;
+	struct chcr_ktls_ofld_ctx_tx *tx_ctx;
+	struct ch_ktls_stats_debug *stats;
+	struct tcphdr *th = tcp_hdr(skb);
+	int data_len, qidx, ret = 0, mss;
+	struct tls_record_info *record;
+	struct chcr_ktls_info *tx_info;
+	struct net_device *tls_netdev;
+	struct tls_context *tls_ctx;
+	struct sge_eth_txq *q;
+	struct adapter *adap;
+	unsigned long flags;
+
+	tcp_seq = ntohl(th->seq);
+	skb_offset = skb_tcp_all_headers(skb);
+	skb_data_len = skb->len - skb_offset;
+	data_len = skb_data_len;
+
+	mss = skb_is_gso(skb) ? skb_shinfo(skb)->gso_size : data_len;
+
+	tls_ctx = tls_get_ctx(skb->sk);
+	tls_netdev = rcu_dereference_bh(tls_ctx->netdev);
+	/* Don't quit on NULL: if tls_device_down is running in parallel,
+	 * netdev might become NULL, even if tls_is_sk_tx_device_offloaded was
+	 * true. Rather continue processing this packet.
+	 */
+	if (unlikely(tls_netdev && tls_netdev != dev))
+		goto out;
+
+	tx_ctx = chcr_get_ktls_tx_context(tls_ctx);
+	tx_info = tx_ctx->chcr_info;
+
+	if (unlikely(!tx_info))
+		goto out;
+
+	adap = tx_info->adap;
+	stats = &adap->ch_ktls_stats;
+	port_stats = &stats->ktls_port[tx_info->port_id];
+
+	qidx = skb->queue_mapping;
+	q = &adap->sge.ethtxq[qidx + tx_info->first_qset];
+	cxgb4_reclaim_completed_tx(adap, &q->q, true);
+	/* if tcp options are set but finish is not send the options first */
+	if (!th->fin && chcr_ktls_check_tcp_options(th)) {
+		ret = chcr_ktls_write_tcp_options(tx_info, skb, q,
+						  tx_info->tx_chan);
+		if (ret)
+			return NETDEV_TX_BUSY;
+	}
+
+	/* TCP segments can be in received either complete or partial.
+	 * chcr_end_part_handler will handle cases if complete record or end
+	 * part of the record is received. In case of partial end part of record,
+	 * we will send the complete record again.
+	 */
+
+	spin_lock_irqsave(&tx_ctx->base.lock, flags);
+
+	do {
+
+		cxgb4_reclaim_completed_tx(adap, &q->q, true);
+		/* fetch the tls record */
+		record = tls_get_record(&tx_ctx->base, tcp_seq,
+					&tx_info->record_no);
+		/* By the time packet reached to us, ACK is received, and record
+		 * won't be found in that case, handle it gracefully.
+		 */
+		if (unlikely(!record)) {
+			spin_unlock_irqrestore(&tx_ctx->base.lock, flags);
+			atomic64_inc(&port_stats->ktls_tx_drop_no_sync_data);
+			goto out;
+		}
+
+		tls_end_offset = record->end_seq - tcp_seq;
+
+		pr_debug("seq 0x%x, end_seq 0x%x prev_seq 0x%x, datalen 0x%x\n",
+			 tcp_seq, record->end_seq, tx_info->prev_seq, data_len);
+		/* update tcb for the skb */
+		if (skb_data_len == data_len) {
+			u32 tx_max = tcp_seq;
+
+			if (!tls_record_is_start_marker(record) &&
+			    tls_end_offset < TLS_CIPHER_AES_GCM_128_TAG_SIZE)
+				tx_max = record->end_seq -
+					TLS_CIPHER_AES_GCM_128_TAG_SIZE;
+
+			ret = chcr_ktls_xmit_tcb_cpls(tx_info, q, tx_max,
+						      ntohl(th->ack_seq),
+						      ntohs(th->window),
+						      tls_end_offset !=
+						      record->len);
+			if (ret) {
+				spin_unlock_irqrestore(&tx_ctx->base.lock,
+						       flags);
+				goto out;
+			}
+
+			if (th->fin)
+				skb_get(skb);
+		}
+
+		if (unlikely(tls_record_is_start_marker(record))) {
+			atomic64_inc(&port_stats->ktls_tx_skip_no_sync_data);
+			/* If tls_end_offset < data_len, means there is some
+			 * data after start marker, which needs encryption, send
+			 * plaintext first and take skb refcount. else send out
+			 * complete pkt as plaintext.
+			 */
+			if (tls_end_offset < data_len)
+				skb_get(skb);
+			else
+				tls_end_offset = data_len;
+
+			ret = chcr_ktls_tx_plaintxt(tx_info, skb, tcp_seq, mss,
+						    (!th->fin && th->psh), q,
+						    tx_info->port_id, NULL,
+						    tls_end_offset, skb_offset,
+						    0);
+
+			if (ret) {
+				/* free the refcount taken earlier */
+				if (tls_end_offset < data_len)
+					dev_kfree_skb_any(skb);
+				spin_unlock_irqrestore(&tx_ctx->base.lock, flags);
+				goto out;
+			}
+
+			data_len -= tls_end_offset;
+			tcp_seq = record->end_seq;
+			skb_offset += tls_end_offset;
+			continue;
+		}
+
+		/* if a tls record is finishing in this SKB */
+		if (tls_end_offset <= data_len) {
+			ret = chcr_end_part_handler(tx_info, skb, record,
+						    tcp_seq, mss,
+						    (!th->fin && th->psh), q,
+						    skb_offset,
+						    tls_end_offset,
+						    skb_offset +
+						    tls_end_offset == skb->len);
+
+			data_len -= tls_end_offset;
+			/* tcp_seq increment is required to handle next record.
+			 */
+			tcp_seq += tls_end_offset;
+			skb_offset += tls_end_offset;
+		} else {
+			ret = chcr_short_record_handler(tx_info, skb,
+							record, tcp_seq, mss,
+							(!th->fin && th->psh),
+							data_len, skb_offset,
+							q, tls_end_offset);
+			data_len = 0;
+		}
+
+		/* if any failure, come out from the loop. */
+		if (ret) {
+			spin_unlock_irqrestore(&tx_ctx->base.lock, flags);
+			if (th->fin)
+				dev_kfree_skb_any(skb);
+
+			if (ret == FALLBACK)
+				return chcr_ktls_sw_fallback(skb, tx_info, q);
+
+			return NETDEV_TX_OK;
+		}
+
+		/* length should never be less than 0 */
+		WARN_ON(data_len < 0);
+
+	} while (data_len > 0);
+
+	spin_unlock_irqrestore(&tx_ctx->base.lock, flags);
+	atomic64_inc(&port_stats->ktls_tx_encrypted_packets);
+	atomic64_add(skb_data_len, &port_stats->ktls_tx_encrypted_bytes);
+
+	/* tcp finish is set, send a separate tcp msg including all the options
+	 * as well.
+	 */
+	if (th->fin) {
+		chcr_ktls_write_tcp_options(tx_info, skb, q, tx_info->tx_chan);
+		dev_kfree_skb_any(skb);
+	}
+
+	return NETDEV_TX_OK;
+out:
+	dev_kfree_skb_any(skb);
+	return NETDEV_TX_OK;
+}
+
+static void *chcr_ktls_uld_add(const struct cxgb4_lld_info *lldi)
+{
+	struct chcr_ktls_uld_ctx *u_ctx;
+
+	pr_info_once("%s - version %s\n", CHCR_KTLS_DRV_DESC,
+		     CHCR_KTLS_DRV_VERSION);
+	u_ctx = kzalloc(sizeof(*u_ctx), GFP_KERNEL);
+	if (!u_ctx) {
+		u_ctx = ERR_PTR(-ENOMEM);
+		goto out;
+	}
+	u_ctx->lldi = *lldi;
+	u_ctx->detach = false;
+	xa_init_flags(&u_ctx->tid_list, XA_FLAGS_LOCK_BH);
+out:
+	return u_ctx;
+}
+
+static const struct tlsdev_ops chcr_ktls_ops = {
+	.tls_dev_add = chcr_ktls_dev_add,
+	.tls_dev_del = chcr_ktls_dev_del,
+};
+
+static chcr_handler_func work_handlers[NUM_CPL_CMDS] = {
+	[CPL_ACT_OPEN_RPL] = chcr_ktls_cpl_act_open_rpl,
+	[CPL_SET_TCB_RPL] = chcr_ktls_cpl_set_tcb_rpl,
+};
+
+static int chcr_ktls_uld_rx_handler(void *handle, const __be64 *rsp,
+				    const struct pkt_gl *pgl)
+{
+	const struct cpl_act_open_rpl *rpl = (struct cpl_act_open_rpl *)rsp;
+	struct chcr_ktls_uld_ctx *u_ctx = handle;
+	u8 opcode = rpl->ot.opcode;
+	struct adapter *adap;
+
+	adap = pci_get_drvdata(u_ctx->lldi.pdev);
+
+	if (!work_handlers[opcode]) {
+		pr_err("Unsupported opcode %d received\n", opcode);
+		return 0;
+	}
+
+	work_handlers[opcode](adap, (unsigned char *)&rsp[1]);
+	return 0;
+}
+
+static void clear_conn_resources(struct chcr_ktls_info *tx_info)
+{
+	/* clear l2t entry */
+	if (tx_info->l2te)
+		cxgb4_l2t_release(tx_info->l2te);
+
+#if IS_ENABLED(CONFIG_IPV6)
+	/* clear clip entry */
+	if (tx_info->ip_family == AF_INET6)
+		cxgb4_clip_release(tx_info->netdev, (const u32 *)
+				   &tx_info->sk->sk_v6_rcv_saddr,
+				   1);
+#endif
+
+	/* clear tid */
+	if (tx_info->tid != -1)
+		cxgb4_remove_tid(&tx_info->adap->tids, tx_info->tx_chan,
+				 tx_info->tid, tx_info->ip_family);
+}
+
+static void ch_ktls_reset_all_conn(struct chcr_ktls_uld_ctx *u_ctx)
+{
+	struct ch_ktls_port_stats_debug *port_stats;
+	struct chcr_ktls_ofld_ctx_tx *tx_ctx;
+	struct chcr_ktls_info *tx_info;
+	unsigned long index;
+
+	xa_for_each(&u_ctx->tid_list, index, tx_ctx) {
+		tx_info = tx_ctx->chcr_info;
+		clear_conn_resources(tx_info);
+		port_stats = &tx_info->adap->ch_ktls_stats.ktls_port[tx_info->port_id];
+		atomic64_inc(&port_stats->ktls_tx_connection_close);
+		kvfree(tx_info);
+		tx_ctx->chcr_info = NULL;
+		/* release module refcount */
+		module_put(THIS_MODULE);
+	}
+}
+
+static int chcr_ktls_uld_state_change(void *handle, enum cxgb4_state new_state)
+{
+	struct chcr_ktls_uld_ctx *u_ctx = handle;
+
+	switch (new_state) {
+	case CXGB4_STATE_UP:
+		pr_info("%s: Up\n", pci_name(u_ctx->lldi.pdev));
+		mutex_lock(&dev_mutex);
+		list_add_tail(&u_ctx->entry, &uld_ctx_list);
+		mutex_unlock(&dev_mutex);
+		break;
+	case CXGB4_STATE_START_RECOVERY:
+	case CXGB4_STATE_DOWN:
+	case CXGB4_STATE_DETACH:
+		pr_info("%s: Down\n", pci_name(u_ctx->lldi.pdev));
+		mutex_lock(&dev_mutex);
+		u_ctx->detach = true;
+		list_del(&u_ctx->entry);
+		ch_ktls_reset_all_conn(u_ctx);
+		xa_destroy(&u_ctx->tid_list);
+		mutex_unlock(&dev_mutex);
+		break;
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+static struct cxgb4_uld_info chcr_ktls_uld_info = {
+	.name = CHCR_KTLS_DRV_MODULE_NAME,
+	.nrxq = 1,
+	.rxq_size = 1024,
+	.add = chcr_ktls_uld_add,
+	.tx_handler = chcr_ktls_xmit,
+	.rx_handler = chcr_ktls_uld_rx_handler,
+	.state_change = chcr_ktls_uld_state_change,
+	.tlsdev_ops = &chcr_ktls_ops,
+};
+
+static int __init chcr_ktls_init(void)
+{
+	cxgb4_register_uld(CXGB4_ULD_KTLS, &chcr_ktls_uld_info);
+	return 0;
+}
+
+static void __exit chcr_ktls_exit(void)
+{
+	struct chcr_ktls_uld_ctx *u_ctx, *tmp;
+	struct adapter *adap;
+
+	pr_info("driver unloaded\n");
+
+	mutex_lock(&dev_mutex);
+	list_for_each_entry_safe(u_ctx, tmp, &uld_ctx_list, entry) {
+		adap = pci_get_drvdata(u_ctx->lldi.pdev);
+		memset(&adap->ch_ktls_stats, 0, sizeof(adap->ch_ktls_stats));
+		list_del(&u_ctx->entry);
+		xa_destroy(&u_ctx->tid_list);
+		kfree(u_ctx);
+	}
+	mutex_unlock(&dev_mutex);
+	cxgb4_unregister_uld(CXGB4_ULD_KTLS);
+}
+
+module_init(chcr_ktls_init);
+module_exit(chcr_ktls_exit);
+
+MODULE_DESCRIPTION("Chelsio NIC TLS ULD driver");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Chelsio Communications");
+MODULE_VERSION(CHCR_KTLS_DRV_VERSION);
diff --git a/drivers/net/ethernet/chelsio/inline_crypto/ch_ktls/chcr_ktls.h b/drivers/net/ethernet/chelsio/inline_crypto/ch_ktls/chcr_ktls.h
new file mode 100644
index 000000000..10572dc55
--- /dev/null
+++ b/drivers/net/ethernet/chelsio/inline_crypto/ch_ktls/chcr_ktls.h
@@ -0,0 +1,103 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Copyright (C) 2020 Chelsio Communications.  All rights reserved. */
+
+#ifndef __CHCR_KTLS_H__
+#define __CHCR_KTLS_H__
+
+#include "cxgb4.h"
+#include "t4_msg.h"
+#include "t4_tcb.h"
+#include "l2t.h"
+#include "chcr_common.h"
+#include "cxgb4_uld.h"
+#include "clip_tbl.h"
+
+#define CHCR_KTLS_DRV_MODULE_NAME "ch_ktls"
+#define CHCR_KTLS_DRV_VERSION "1.0.0.0-ko"
+#define CHCR_KTLS_DRV_DESC "Chelsio NIC TLS ULD Driver"
+
+#define CHCR_TCB_STATE_CLOSED	0
+#define CHCR_KTLS_KEY_CTX_LEN	16
+#define CHCR_SET_TCB_FIELD_LEN	sizeof(struct cpl_set_tcb_field)
+#define CHCR_PLAIN_TX_DATA_LEN	(sizeof(struct fw_ulptx_wr) +\
+				 sizeof(struct ulp_txpkt) +\
+				 sizeof(struct ulptx_idata) +\
+				 sizeof(struct cpl_tx_data))
+
+#define CHCR_KTLS_WR_SIZE	(CHCR_PLAIN_TX_DATA_LEN +\
+				 sizeof(struct cpl_tx_sec_pdu))
+#define FALLBACK		35
+
+enum ch_ktls_open_state {
+	CH_KTLS_OPEN_SUCCESS = 0,
+	CH_KTLS_OPEN_PENDING = 1,
+	CH_KTLS_OPEN_FAILURE = 2,
+};
+
+struct chcr_ktls_info {
+	struct sock *sk;
+	spinlock_t lock; /* lock for pending_close */
+	struct ktls_key_ctx key_ctx;
+	struct adapter *adap;
+	struct l2t_entry *l2te;
+	struct net_device *netdev;
+	struct completion completion;
+	u64 iv;
+	u64 record_no;
+	int tid;
+	int atid;
+	int rx_qid;
+	u32 iv_size;
+	u32 prev_seq;
+	u32 prev_ack;
+	u32 salt_size;
+	u32 key_ctx_len;
+	u32 scmd0_seqno_numivs;
+	u32 scmd0_ivgen_hdrlen;
+	u32 tcp_start_seq_number;
+	u32 scmd0_short_seqno_numivs;
+	u32 scmd0_short_ivgen_hdrlen;
+	u16 prev_win;
+	u8 tx_chan;
+	u8 smt_idx;
+	u8 port_id;
+	u8 ip_family;
+	u8 first_qset;
+	enum ch_ktls_open_state open_state;
+	bool pending_close;
+};
+
+struct chcr_ktls_ofld_ctx_tx {
+	struct tls_offload_context_tx base;
+	struct chcr_ktls_info *chcr_info;
+};
+
+struct chcr_ktls_uld_ctx {
+	struct list_head entry;
+	struct cxgb4_lld_info lldi;
+	struct xarray tid_list;
+	bool detach;
+};
+
+static inline struct chcr_ktls_ofld_ctx_tx *
+chcr_get_ktls_tx_context(struct tls_context *tls_ctx)
+{
+	BUILD_BUG_ON(sizeof(struct chcr_ktls_ofld_ctx_tx) >
+		     TLS_OFFLOAD_CONTEXT_SIZE_TX);
+	return container_of(tls_offload_ctx_tx(tls_ctx),
+			    struct chcr_ktls_ofld_ctx_tx,
+			    base);
+}
+
+static inline int chcr_get_first_rx_qid(struct adapter *adap)
+{
+	/* u_ctx is saved in adap, fetch it */
+	struct chcr_ktls_uld_ctx *u_ctx = adap->uld[CXGB4_ULD_KTLS].handle;
+
+	if (!u_ctx)
+		return -1;
+	return u_ctx->lldi.rxq_ids[0];
+}
+
+typedef int (*chcr_handler_func)(struct adapter *adap, unsigned char *input);
+#endif /* __CHCR_KTLS_H__ */
diff --git a/drivers/net/ethernet/chelsio/inline_crypto/chtls/Makefile b/drivers/net/ethernet/chelsio/inline_crypto/chtls/Makefile
new file mode 100644
index 000000000..bc11495ac
--- /dev/null
+++ b/drivers/net/ethernet/chelsio/inline_crypto/chtls/Makefile
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
+ccflags-y := -I $(srctree)/drivers/net/ethernet/chelsio/cxgb4 \
+	     -I $(srctree)/drivers/crypto/chelsio
+
+obj-$(CONFIG_CRYPTO_DEV_CHELSIO_TLS) += chtls.o
+chtls-objs := chtls_main.o chtls_cm.o chtls_io.o chtls_hw.o
diff --git a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls.h b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls.h
new file mode 100644
index 000000000..41714203a
--- /dev/null
+++ b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls.h
@@ -0,0 +1,586 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2018 Chelsio Communications, Inc.
+ */
+
+#ifndef __CHTLS_H__
+#define __CHTLS_H__
+
+#include <crypto/aes.h>
+#include <crypto/algapi.h>
+#include <crypto/hash.h>
+#include <crypto/sha1.h>
+#include <crypto/sha2.h>
+#include <crypto/authenc.h>
+#include <crypto/ctr.h>
+#include <crypto/gf128mul.h>
+#include <crypto/internal/aead.h>
+#include <crypto/null.h>
+#include <crypto/internal/skcipher.h>
+#include <crypto/aead.h>
+#include <crypto/scatterwalk.h>
+#include <crypto/internal/hash.h>
+#include <linux/tls.h>
+#include <net/tls.h>
+#include <net/tls_toe.h>
+
+#include "t4fw_api.h"
+#include "t4_msg.h"
+#include "cxgb4.h"
+#include "cxgb4_uld.h"
+#include "l2t.h"
+#include "chcr_algo.h"
+#include "chcr_core.h"
+#include "chcr_crypto.h"
+
+#define CHTLS_DRV_VERSION "1.0.0.0-ko"
+
+#define TLS_KEYCTX_RXFLIT_CNT_S 24
+#define TLS_KEYCTX_RXFLIT_CNT_V(x) ((x) << TLS_KEYCTX_RXFLIT_CNT_S)
+
+#define TLS_KEYCTX_RXPROT_VER_S 20
+#define TLS_KEYCTX_RXPROT_VER_M 0xf
+#define TLS_KEYCTX_RXPROT_VER_V(x) ((x) << TLS_KEYCTX_RXPROT_VER_S)
+
+#define TLS_KEYCTX_RXCIPH_MODE_S 16
+#define TLS_KEYCTX_RXCIPH_MODE_M 0xf
+#define TLS_KEYCTX_RXCIPH_MODE_V(x) ((x) << TLS_KEYCTX_RXCIPH_MODE_S)
+
+#define TLS_KEYCTX_RXAUTH_MODE_S 12
+#define TLS_KEYCTX_RXAUTH_MODE_M 0xf
+#define TLS_KEYCTX_RXAUTH_MODE_V(x) ((x) << TLS_KEYCTX_RXAUTH_MODE_S)
+
+#define TLS_KEYCTX_RXCIAU_CTRL_S 11
+#define TLS_KEYCTX_RXCIAU_CTRL_V(x) ((x) << TLS_KEYCTX_RXCIAU_CTRL_S)
+
+#define TLS_KEYCTX_RX_SEQCTR_S 9
+#define TLS_KEYCTX_RX_SEQCTR_M 0x3
+#define TLS_KEYCTX_RX_SEQCTR_V(x) ((x) << TLS_KEYCTX_RX_SEQCTR_S)
+
+#define TLS_KEYCTX_RX_VALID_S 8
+#define TLS_KEYCTX_RX_VALID_V(x) ((x) << TLS_KEYCTX_RX_VALID_S)
+
+#define TLS_KEYCTX_RXCK_SIZE_S 3
+#define TLS_KEYCTX_RXCK_SIZE_M 0x7
+#define TLS_KEYCTX_RXCK_SIZE_V(x) ((x) << TLS_KEYCTX_RXCK_SIZE_S)
+
+#define TLS_KEYCTX_RXMK_SIZE_S 0
+#define TLS_KEYCTX_RXMK_SIZE_M 0x7
+#define TLS_KEYCTX_RXMK_SIZE_V(x) ((x) << TLS_KEYCTX_RXMK_SIZE_S)
+
+#define KEYCTX_TX_WR_IV_S  55
+#define KEYCTX_TX_WR_IV_M  0x1ffULL
+#define KEYCTX_TX_WR_IV_V(x) ((x) << KEYCTX_TX_WR_IV_S)
+#define KEYCTX_TX_WR_IV_G(x) \
+	(((x) >> KEYCTX_TX_WR_IV_S) & KEYCTX_TX_WR_IV_M)
+
+#define KEYCTX_TX_WR_AAD_S 47
+#define KEYCTX_TX_WR_AAD_M 0xffULL
+#define KEYCTX_TX_WR_AAD_V(x) ((x) << KEYCTX_TX_WR_AAD_S)
+#define KEYCTX_TX_WR_AAD_G(x) (((x) >> KEYCTX_TX_WR_AAD_S) & \
+				KEYCTX_TX_WR_AAD_M)
+
+#define KEYCTX_TX_WR_AADST_S 39
+#define KEYCTX_TX_WR_AADST_M 0xffULL
+#define KEYCTX_TX_WR_AADST_V(x) ((x) << KEYCTX_TX_WR_AADST_S)
+#define KEYCTX_TX_WR_AADST_G(x) \
+	(((x) >> KEYCTX_TX_WR_AADST_S) & KEYCTX_TX_WR_AADST_M)
+
+#define KEYCTX_TX_WR_CIPHER_S 30
+#define KEYCTX_TX_WR_CIPHER_M 0x1ffULL
+#define KEYCTX_TX_WR_CIPHER_V(x) ((x) << KEYCTX_TX_WR_CIPHER_S)
+#define KEYCTX_TX_WR_CIPHER_G(x) \
+	(((x) >> KEYCTX_TX_WR_CIPHER_S) & KEYCTX_TX_WR_CIPHER_M)
+
+#define KEYCTX_TX_WR_CIPHERST_S 23
+#define KEYCTX_TX_WR_CIPHERST_M 0x7f
+#define KEYCTX_TX_WR_CIPHERST_V(x) ((x) << KEYCTX_TX_WR_CIPHERST_S)
+#define KEYCTX_TX_WR_CIPHERST_G(x) \
+	(((x) >> KEYCTX_TX_WR_CIPHERST_S) & KEYCTX_TX_WR_CIPHERST_M)
+
+#define KEYCTX_TX_WR_AUTH_S 14
+#define KEYCTX_TX_WR_AUTH_M 0x1ff
+#define KEYCTX_TX_WR_AUTH_V(x) ((x) << KEYCTX_TX_WR_AUTH_S)
+#define KEYCTX_TX_WR_AUTH_G(x) \
+	(((x) >> KEYCTX_TX_WR_AUTH_S) & KEYCTX_TX_WR_AUTH_M)
+
+#define KEYCTX_TX_WR_AUTHST_S 7
+#define KEYCTX_TX_WR_AUTHST_M 0x7f
+#define KEYCTX_TX_WR_AUTHST_V(x) ((x) << KEYCTX_TX_WR_AUTHST_S)
+#define KEYCTX_TX_WR_AUTHST_G(x) \
+	(((x) >> KEYCTX_TX_WR_AUTHST_S) & KEYCTX_TX_WR_AUTHST_M)
+
+#define KEYCTX_TX_WR_AUTHIN_S 0
+#define KEYCTX_TX_WR_AUTHIN_M 0x7f
+#define KEYCTX_TX_WR_AUTHIN_V(x) ((x) << KEYCTX_TX_WR_AUTHIN_S)
+#define KEYCTX_TX_WR_AUTHIN_G(x) \
+	(((x) >> KEYCTX_TX_WR_AUTHIN_S) & KEYCTX_TX_WR_AUTHIN_M)
+
+struct sge_opaque_hdr {
+	void *dev;
+	dma_addr_t addr[MAX_SKB_FRAGS + 1];
+};
+
+#define MAX_IVS_PAGE			256
+#define TLS_KEY_CONTEXT_SZ		64
+#define CIPHER_BLOCK_SIZE		16
+#define GCM_TAG_SIZE			16
+#define KEY_ON_MEM_SZ			16
+#define AEAD_EXPLICIT_DATA_SIZE		8
+#define TLS_HEADER_LENGTH		5
+#define SCMD_CIPH_MODE_AES_GCM		2
+/* Any MFS size should work and come from openssl */
+#define TLS_MFS				16384
+
+#define RSS_HDR sizeof(struct rss_header)
+#define TLS_WR_CPL_LEN \
+	(sizeof(struct fw_tlstx_data_wr) + sizeof(struct cpl_tx_tls_sfo))
+
+enum {
+	CHTLS_KEY_CONTEXT_DSGL,
+	CHTLS_KEY_CONTEXT_IMM,
+	CHTLS_KEY_CONTEXT_DDR,
+};
+
+enum {
+	CHTLS_LISTEN_START,
+	CHTLS_LISTEN_STOP,
+};
+
+/* Flags for return value of CPL message handlers */
+enum {
+	CPL_RET_BUF_DONE =    1,   /* buffer processing done */
+	CPL_RET_BAD_MSG =     2,   /* bad CPL message */
+	CPL_RET_UNKNOWN_TID = 4    /* unexpected unknown TID */
+};
+
+#define LISTEN_INFO_HASH_SIZE 32
+#define RSPQ_HASH_BITS 5
+struct listen_info {
+	struct listen_info *next;  /* Link to next entry */
+	struct sock *sk;           /* The listening socket */
+	unsigned int stid;         /* The server TID */
+};
+
+enum {
+	T4_LISTEN_START_PENDING,
+	T4_LISTEN_STARTED
+};
+
+enum csk_flags {
+	CSK_CALLBACKS_CHKD,	/* socket callbacks have been sanitized */
+	CSK_ABORT_REQ_RCVD,	/* received one ABORT_REQ_RSS message */
+	CSK_TX_MORE_DATA,	/* sending ULP data; don't set SHOVE bit */
+	CSK_TX_WAIT_IDLE,	/* suspend Tx until in-flight data is ACKed */
+	CSK_ABORT_SHUTDOWN,	/* shouldn't send more abort requests */
+	CSK_ABORT_RPL_PENDING,	/* expecting an abort reply */
+	CSK_CLOSE_CON_REQUESTED,/* we've sent a close_conn_req */
+	CSK_TX_DATA_SENT,	/* sent a TX_DATA WR on this connection */
+	CSK_TX_FAILOVER,	/* Tx traffic failing over */
+	CSK_UPDATE_RCV_WND,	/* Need to update rcv window */
+	CSK_RST_ABORTED,	/* outgoing RST was aborted */
+	CSK_TLS_HANDSHK,	/* TLS Handshake */
+	CSK_CONN_INLINE,	/* Connection on HW */
+};
+
+enum chtls_cdev_state {
+	CHTLS_CDEV_STATE_UP = 1
+};
+
+struct listen_ctx {
+	struct sock *lsk;
+	struct chtls_dev *cdev;
+	struct sk_buff_head synq;
+	u32 state;
+};
+
+struct key_map {
+	unsigned long *addr;
+	unsigned int start;
+	unsigned int available;
+	unsigned int size;
+	spinlock_t lock; /* lock for key id request from map */
+} __packed;
+
+struct tls_scmd {
+	u32 seqno_numivs;
+	u32 ivgen_hdrlen;
+};
+
+struct chtls_dev {
+	struct tls_toe_device tlsdev;
+	struct list_head list;
+	struct cxgb4_lld_info *lldi;
+	struct pci_dev *pdev;
+	struct listen_info *listen_hash_tab[LISTEN_INFO_HASH_SIZE];
+	spinlock_t listen_lock; /* lock for listen list */
+	struct net_device **ports;
+	struct tid_info *tids;
+	unsigned int pfvf;
+	const unsigned short *mtus;
+
+	struct idr hwtid_idr;
+	struct idr stid_idr;
+
+	spinlock_t idr_lock ____cacheline_aligned_in_smp;
+
+	struct net_device *egr_dev[NCHAN * 2];
+	struct sk_buff *rspq_skb_cache[1 << RSPQ_HASH_BITS];
+	struct sk_buff *askb;
+
+	struct sk_buff_head deferq;
+	struct work_struct deferq_task;
+
+	struct list_head list_node;
+	struct list_head rcu_node;
+	struct list_head na_node;
+	unsigned int send_page_order;
+	int max_host_sndbuf;
+	u32 round_robin_cnt;
+	struct key_map kmap;
+	unsigned int cdev_state;
+};
+
+struct chtls_listen {
+	struct chtls_dev *cdev;
+	struct sock *sk;
+};
+
+struct chtls_hws {
+	struct sk_buff_head sk_recv_queue;
+	u8 txqid;
+	u8 ofld;
+	u16 type;
+	u16 rstate;
+	u16 keyrpl;
+	u16 pldlen;
+	u16 rcvpld;
+	u16 compute;
+	u16 expansion;
+	u16 keylen;
+	u16 pdus;
+	u16 adjustlen;
+	u16 ivsize;
+	u16 txleft;
+	u32 mfs;
+	s32 txkey;
+	s32 rxkey;
+	u32 fcplenmax;
+	u32 copied_seq;
+	u64 tx_seq_no;
+	struct tls_scmd scmd;
+	union {
+		struct tls12_crypto_info_aes_gcm_128 aes_gcm_128;
+		struct tls12_crypto_info_aes_gcm_256 aes_gcm_256;
+	} crypto_info;
+};
+
+struct chtls_sock {
+	struct sock *sk;
+	struct chtls_dev *cdev;
+	struct l2t_entry *l2t_entry;    /* pointer to the L2T entry */
+	struct net_device *egress_dev;  /* TX_CHAN for act open retry */
+
+	struct sk_buff_head txq;
+	struct sk_buff *wr_skb_head;
+	struct sk_buff *wr_skb_tail;
+	struct sk_buff *ctrl_skb_cache;
+	struct sk_buff *txdata_skb_cache; /* abort path messages */
+	struct kref kref;
+	unsigned long flags;
+	u32 opt2;
+	u32 wr_credits;
+	u32 wr_unacked;
+	u32 wr_max_credits;
+	u32 wr_nondata;
+	u32 hwtid;               /* TCP Control Block ID */
+	u32 txq_idx;
+	u32 rss_qid;
+	u32 tid;
+	u32 idr;
+	u32 mss;
+	u32 ulp_mode;
+	u32 tx_chan;
+	u32 rx_chan;
+	u32 sndbuf;
+	u32 txplen_max;
+	u32 mtu_idx;           /* MTU table index */
+	u32 smac_idx;
+	u8 port_id;
+	u8 tos;
+	u16 resv2;
+	u32 delack_mode;
+	u32 delack_seq;
+	u32 snd_win;
+	u32 rcv_win;
+
+	void *passive_reap_next;        /* placeholder for passive */
+	struct chtls_hws tlshws;
+	struct synq {
+		struct sk_buff *next;
+		struct sk_buff *prev;
+	} synq;
+	struct listen_ctx *listen_ctx;
+};
+
+struct tls_hdr {
+	u8  type;
+	u16 version;
+	u16 length;
+} __packed;
+
+struct tlsrx_cmp_hdr {
+	u8  type;
+	u16 version;
+	u16 length;
+
+	u64 tls_seq;
+	u16 reserved1;
+	u8  res_to_mac_error;
+} __packed;
+
+/* res_to_mac_error fields */
+#define TLSRX_HDR_PKT_INT_ERROR_S   4
+#define TLSRX_HDR_PKT_INT_ERROR_M   0x1
+#define TLSRX_HDR_PKT_INT_ERROR_V(x) \
+	((x) << TLSRX_HDR_PKT_INT_ERROR_S)
+#define TLSRX_HDR_PKT_INT_ERROR_G(x) \
+	(((x) >> TLSRX_HDR_PKT_INT_ERROR_S) & TLSRX_HDR_PKT_INT_ERROR_M)
+#define TLSRX_HDR_PKT_INT_ERROR_F   TLSRX_HDR_PKT_INT_ERROR_V(1U)
+
+#define TLSRX_HDR_PKT_SPP_ERROR_S        3
+#define TLSRX_HDR_PKT_SPP_ERROR_M        0x1
+#define TLSRX_HDR_PKT_SPP_ERROR_V(x)     ((x) << TLSRX_HDR_PKT_SPP_ERROR)
+#define TLSRX_HDR_PKT_SPP_ERROR_G(x)     \
+	(((x) >> TLSRX_HDR_PKT_SPP_ERROR_S) & TLSRX_HDR_PKT_SPP_ERROR_M)
+#define TLSRX_HDR_PKT_SPP_ERROR_F        TLSRX_HDR_PKT_SPP_ERROR_V(1U)
+
+#define TLSRX_HDR_PKT_CCDX_ERROR_S       2
+#define TLSRX_HDR_PKT_CCDX_ERROR_M       0x1
+#define TLSRX_HDR_PKT_CCDX_ERROR_V(x)    ((x) << TLSRX_HDR_PKT_CCDX_ERROR_S)
+#define TLSRX_HDR_PKT_CCDX_ERROR_G(x)    \
+	(((x) >> TLSRX_HDR_PKT_CCDX_ERROR_S) & TLSRX_HDR_PKT_CCDX_ERROR_M)
+#define TLSRX_HDR_PKT_CCDX_ERROR_F       TLSRX_HDR_PKT_CCDX_ERROR_V(1U)
+
+#define TLSRX_HDR_PKT_PAD_ERROR_S        1
+#define TLSRX_HDR_PKT_PAD_ERROR_M        0x1
+#define TLSRX_HDR_PKT_PAD_ERROR_V(x)     ((x) << TLSRX_HDR_PKT_PAD_ERROR_S)
+#define TLSRX_HDR_PKT_PAD_ERROR_G(x)     \
+	(((x) >> TLSRX_HDR_PKT_PAD_ERROR_S) & TLSRX_HDR_PKT_PAD_ERROR_M)
+#define TLSRX_HDR_PKT_PAD_ERROR_F        TLSRX_HDR_PKT_PAD_ERROR_V(1U)
+
+#define TLSRX_HDR_PKT_MAC_ERROR_S        0
+#define TLSRX_HDR_PKT_MAC_ERROR_M        0x1
+#define TLSRX_HDR_PKT_MAC_ERROR_V(x)     ((x) << TLSRX_HDR_PKT_MAC_ERROR)
+#define TLSRX_HDR_PKT_MAC_ERROR_G(x)     \
+	(((x) >> S_TLSRX_HDR_PKT_MAC_ERROR_S) & TLSRX_HDR_PKT_MAC_ERROR_M)
+#define TLSRX_HDR_PKT_MAC_ERROR_F        TLSRX_HDR_PKT_MAC_ERROR_V(1U)
+
+#define TLSRX_HDR_PKT_ERROR_M           0x1F
+#define CONTENT_TYPE_ERROR		0x7F
+
+struct ulp_mem_rw {
+	__be32 cmd;
+	__be32 len16;             /* command length */
+	__be32 dlen;              /* data length in 32-byte units */
+	__be32 lock_addr;
+};
+
+struct tls_key_wr {
+	__be32 op_to_compl;
+	__be32 flowid_len16;
+	__be32 ftid;
+	u8   reneg_to_write_rx;
+	u8   protocol;
+	__be16 mfs;
+};
+
+struct tls_key_req {
+	struct tls_key_wr wr;
+	struct ulp_mem_rw req;
+	struct ulptx_idata sc_imm;
+};
+
+/*
+ * This lives in skb->cb and is used to chain WRs in a linked list.
+ */
+struct wr_skb_cb {
+	struct l2t_skb_cb l2t;          /* reserve space for l2t CB */
+	struct sk_buff *next_wr;        /* next write request */
+};
+
+/* Per-skb backlog handler.  Run when a socket's backlog is processed. */
+struct blog_skb_cb {
+	void (*backlog_rcv)(struct sock *sk, struct sk_buff *skb);
+	struct chtls_dev *cdev;
+};
+
+/*
+ * Similar to tcp_skb_cb but with ULP elements added to support TLS,
+ * etc.
+ */
+struct ulp_skb_cb {
+	struct wr_skb_cb wr;		/* reserve space for write request */
+	u16 flags;			/* TCP-like flags */
+	u8 psh;
+	u8 ulp_mode;			/* ULP mode/submode of sk_buff */
+	u32 seq;			/* TCP sequence number */
+	union { /* ULP-specific fields */
+		struct {
+			u8  type;
+			u8  ofld;
+			u8  iv;
+		} tls;
+	} ulp;
+};
+
+#define ULP_SKB_CB(skb) ((struct ulp_skb_cb *)&((skb)->cb[0]))
+#define BLOG_SKB_CB(skb) ((struct blog_skb_cb *)(skb)->cb)
+
+/*
+ * Flags for ulp_skb_cb.flags.
+ */
+enum {
+	ULPCB_FLAG_NEED_HDR  = 1 << 0,	/* packet needs a TX_DATA_WR header */
+	ULPCB_FLAG_NO_APPEND = 1 << 1,	/* don't grow this skb */
+	ULPCB_FLAG_BARRIER   = 1 << 2,	/* set TX_WAIT_IDLE after sending */
+	ULPCB_FLAG_HOLD      = 1 << 3,	/* skb not ready for Tx yet */
+	ULPCB_FLAG_COMPL     = 1 << 4,	/* request WR completion */
+	ULPCB_FLAG_URG       = 1 << 5,	/* urgent data */
+	ULPCB_FLAG_TLS_HDR   = 1 << 6,  /* payload with tls hdr */
+	ULPCB_FLAG_NO_HDR    = 1 << 7,  /* not a ofld wr */
+};
+
+/* The ULP mode/submode of an skbuff */
+#define skb_ulp_mode(skb)  (ULP_SKB_CB(skb)->ulp_mode)
+#define TCP_PAGE(sk)   (sk->sk_frag.page)
+#define TCP_OFF(sk)    (sk->sk_frag.offset)
+
+static inline struct chtls_dev *to_chtls_dev(struct tls_toe_device *tlsdev)
+{
+	return container_of(tlsdev, struct chtls_dev, tlsdev);
+}
+
+static inline void csk_set_flag(struct chtls_sock *csk,
+				enum csk_flags flag)
+{
+	__set_bit(flag, &csk->flags);
+}
+
+static inline void csk_reset_flag(struct chtls_sock *csk,
+				  enum csk_flags flag)
+{
+	__clear_bit(flag, &csk->flags);
+}
+
+static inline bool csk_conn_inline(const struct chtls_sock *csk)
+{
+	return test_bit(CSK_CONN_INLINE, &csk->flags);
+}
+
+static inline int csk_flag(const struct sock *sk, enum csk_flags flag)
+{
+	struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
+
+	if (!csk_conn_inline(csk))
+		return 0;
+	return test_bit(flag, &csk->flags);
+}
+
+static inline int csk_flag_nochk(const struct chtls_sock *csk,
+				 enum csk_flags flag)
+{
+	return test_bit(flag, &csk->flags);
+}
+
+static inline void *cplhdr(struct sk_buff *skb)
+{
+	return skb->data;
+}
+
+static inline int is_neg_adv(unsigned int status)
+{
+	return status == CPL_ERR_RTX_NEG_ADVICE ||
+	       status == CPL_ERR_KEEPALV_NEG_ADVICE ||
+	       status == CPL_ERR_PERSIST_NEG_ADVICE;
+}
+
+static inline void process_cpl_msg(void (*fn)(struct sock *, struct sk_buff *),
+				   struct sock *sk,
+				   struct sk_buff *skb)
+{
+	skb_reset_mac_header(skb);
+	skb_reset_network_header(skb);
+	skb_reset_transport_header(skb);
+
+	bh_lock_sock(sk);
+	if (unlikely(sock_owned_by_user(sk))) {
+		BLOG_SKB_CB(skb)->backlog_rcv = fn;
+		__sk_add_backlog(sk, skb);
+	} else {
+		fn(sk, skb);
+	}
+	bh_unlock_sock(sk);
+}
+
+static inline void chtls_sock_free(struct kref *ref)
+{
+	struct chtls_sock *csk = container_of(ref, struct chtls_sock,
+					      kref);
+	kfree(csk);
+}
+
+static inline void __chtls_sock_put(const char *fn, struct chtls_sock *csk)
+{
+	kref_put(&csk->kref, chtls_sock_free);
+}
+
+static inline void __chtls_sock_get(const char *fn,
+				    struct chtls_sock *csk)
+{
+	kref_get(&csk->kref);
+}
+
+static inline void send_or_defer(struct sock *sk, struct tcp_sock *tp,
+				 struct sk_buff *skb, int through_l2t)
+{
+	struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
+
+	if (through_l2t) {
+		/* send through L2T */
+		cxgb4_l2t_send(csk->egress_dev, skb, csk->l2t_entry);
+	} else {
+		/* send directly */
+		cxgb4_ofld_send(csk->egress_dev, skb);
+	}
+}
+
+typedef int (*chtls_handler_func)(struct chtls_dev *, struct sk_buff *);
+extern chtls_handler_func chtls_handlers[NUM_CPL_CMDS];
+void chtls_install_cpl_ops(struct sock *sk);
+int chtls_init_kmap(struct chtls_dev *cdev, struct cxgb4_lld_info *lldi);
+void chtls_listen_stop(struct chtls_dev *cdev, struct sock *sk);
+int chtls_listen_start(struct chtls_dev *cdev, struct sock *sk);
+void chtls_close(struct sock *sk, long timeout);
+int chtls_disconnect(struct sock *sk, int flags);
+void chtls_shutdown(struct sock *sk, int how);
+void chtls_destroy_sock(struct sock *sk);
+int chtls_sendmsg(struct sock *sk, struct msghdr *msg, size_t size);
+int chtls_recvmsg(struct sock *sk, struct msghdr *msg,
+		  size_t len, int flags, int *addr_len);
+int chtls_sendpage(struct sock *sk, struct page *page,
+		   int offset, size_t size, int flags);
+int send_tx_flowc_wr(struct sock *sk, int compl,
+		     u32 snd_nxt, u32 rcv_nxt);
+void chtls_tcp_push(struct sock *sk, int flags);
+int chtls_push_frames(struct chtls_sock *csk, int comp);
+int chtls_set_tcb_tflag(struct sock *sk, unsigned int bit_pos, int val);
+void chtls_set_tcb_field_rpl_skb(struct sock *sk, u16 word,
+				 u64 mask, u64 val, u8 cookie,
+				 int through_l2t);
+int chtls_setkey(struct chtls_sock *csk, u32 keylen, u32 mode, int cipher_type);
+void chtls_set_quiesce_ctrl(struct sock *sk, int val);
+void skb_entail(struct sock *sk, struct sk_buff *skb, int flags);
+unsigned int keyid_to_addr(int start_addr, int keyid);
+void free_tls_keyid(struct sock *sk);
+#endif
diff --git a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c
new file mode 100644
index 000000000..6f6525983
--- /dev/null
+++ b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c
@@ -0,0 +1,2334 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2018 Chelsio Communications, Inc.
+ *
+ * Written by: Atul Gupta (atul.gupta@chelsio.com)
+ */
+
+#include <linux/module.h>
+#include <linux/list.h>
+#include <linux/workqueue.h>
+#include <linux/skbuff.h>
+#include <linux/timer.h>
+#include <linux/notifier.h>
+#include <linux/inetdevice.h>
+#include <linux/ip.h>
+#include <linux/tcp.h>
+#include <linux/sched/signal.h>
+#include <linux/kallsyms.h>
+#include <linux/kprobes.h>
+#include <linux/if_vlan.h>
+#include <linux/ipv6.h>
+#include <net/ipv6.h>
+#include <net/transp_v6.h>
+#include <net/ip6_route.h>
+#include <net/inet_common.h>
+#include <net/tcp.h>
+#include <net/dst.h>
+#include <net/tls.h>
+#include <net/addrconf.h>
+#include <net/secure_seq.h>
+
+#include "chtls.h"
+#include "chtls_cm.h"
+#include "clip_tbl.h"
+#include "t4_tcb.h"
+
+/*
+ * State transitions and actions for close.  Note that if we are in SYN_SENT
+ * we remain in that state as we cannot control a connection while it's in
+ * SYN_SENT; such connections are allowed to establish and are then aborted.
+ */
+static unsigned char new_state[16] = {
+	/* current state:     new state:      action: */
+	/* (Invalid)       */ TCP_CLOSE,
+	/* TCP_ESTABLISHED */ TCP_FIN_WAIT1 | TCP_ACTION_FIN,
+	/* TCP_SYN_SENT    */ TCP_SYN_SENT,
+	/* TCP_SYN_RECV    */ TCP_FIN_WAIT1 | TCP_ACTION_FIN,
+	/* TCP_FIN_WAIT1   */ TCP_FIN_WAIT1,
+	/* TCP_FIN_WAIT2   */ TCP_FIN_WAIT2,
+	/* TCP_TIME_WAIT   */ TCP_CLOSE,
+	/* TCP_CLOSE       */ TCP_CLOSE,
+	/* TCP_CLOSE_WAIT  */ TCP_LAST_ACK | TCP_ACTION_FIN,
+	/* TCP_LAST_ACK    */ TCP_LAST_ACK,
+	/* TCP_LISTEN      */ TCP_CLOSE,
+	/* TCP_CLOSING     */ TCP_CLOSING,
+};
+
+static struct chtls_sock *chtls_sock_create(struct chtls_dev *cdev)
+{
+	struct chtls_sock *csk = kzalloc(sizeof(*csk), GFP_ATOMIC);
+
+	if (!csk)
+		return NULL;
+
+	csk->txdata_skb_cache = alloc_skb(TXDATA_SKB_LEN, GFP_ATOMIC);
+	if (!csk->txdata_skb_cache) {
+		kfree(csk);
+		return NULL;
+	}
+
+	kref_init(&csk->kref);
+	csk->cdev = cdev;
+	skb_queue_head_init(&csk->txq);
+	csk->wr_skb_head = NULL;
+	csk->wr_skb_tail = NULL;
+	csk->mss = MAX_MSS;
+	csk->tlshws.ofld = 1;
+	csk->tlshws.txkey = -1;
+	csk->tlshws.rxkey = -1;
+	csk->tlshws.mfs = TLS_MFS;
+	skb_queue_head_init(&csk->tlshws.sk_recv_queue);
+	return csk;
+}
+
+static void chtls_sock_release(struct kref *ref)
+{
+	struct chtls_sock *csk =
+		container_of(ref, struct chtls_sock, kref);
+
+	kfree(csk);
+}
+
+static struct net_device *chtls_find_netdev(struct chtls_dev *cdev,
+					    struct sock *sk)
+{
+	struct adapter *adap = pci_get_drvdata(cdev->pdev);
+	struct net_device *ndev = cdev->ports[0];
+#if IS_ENABLED(CONFIG_IPV6)
+	struct net_device *temp;
+	int addr_type;
+#endif
+	int i;
+
+	switch (sk->sk_family) {
+	case PF_INET:
+		if (likely(!inet_sk(sk)->inet_rcv_saddr))
+			return ndev;
+		ndev = __ip_dev_find(&init_net, inet_sk(sk)->inet_rcv_saddr, false);
+		break;
+#if IS_ENABLED(CONFIG_IPV6)
+	case PF_INET6:
+		addr_type = ipv6_addr_type(&sk->sk_v6_rcv_saddr);
+		if (likely(addr_type == IPV6_ADDR_ANY))
+			return ndev;
+
+		for_each_netdev_rcu(&init_net, temp) {
+			if (ipv6_chk_addr(&init_net, (struct in6_addr *)
+					  &sk->sk_v6_rcv_saddr, temp, 1)) {
+				ndev = temp;
+				break;
+			}
+		}
+	break;
+#endif
+	default:
+		return NULL;
+	}
+
+	if (!ndev)
+		return NULL;
+
+	if (is_vlan_dev(ndev))
+		ndev = vlan_dev_real_dev(ndev);
+
+	for_each_port(adap, i)
+		if (cdev->ports[i] == ndev)
+			return ndev;
+	return NULL;
+}
+
+static void assign_rxopt(struct sock *sk, unsigned int opt)
+{
+	const struct chtls_dev *cdev;
+	struct chtls_sock *csk;
+	struct tcp_sock *tp;
+
+	csk = rcu_dereference_sk_user_data(sk);
+	tp = tcp_sk(sk);
+
+	cdev = csk->cdev;
+	tp->tcp_header_len           = sizeof(struct tcphdr);
+	tp->rx_opt.mss_clamp         = cdev->mtus[TCPOPT_MSS_G(opt)] - 40;
+	tp->mss_cache                = tp->rx_opt.mss_clamp;
+	tp->rx_opt.tstamp_ok         = TCPOPT_TSTAMP_G(opt);
+	tp->rx_opt.snd_wscale        = TCPOPT_SACK_G(opt);
+	tp->rx_opt.wscale_ok         = TCPOPT_WSCALE_OK_G(opt);
+	SND_WSCALE(tp)               = TCPOPT_SND_WSCALE_G(opt);
+	if (!tp->rx_opt.wscale_ok)
+		tp->rx_opt.rcv_wscale = 0;
+	if (tp->rx_opt.tstamp_ok) {
+		tp->tcp_header_len += TCPOLEN_TSTAMP_ALIGNED;
+		tp->rx_opt.mss_clamp -= TCPOLEN_TSTAMP_ALIGNED;
+	} else if (csk->opt2 & TSTAMPS_EN_F) {
+		csk->opt2 &= ~TSTAMPS_EN_F;
+		csk->mtu_idx = TCPOPT_MSS_G(opt);
+	}
+}
+
+static void chtls_purge_receive_queue(struct sock *sk)
+{
+	struct sk_buff *skb;
+
+	while ((skb = __skb_dequeue(&sk->sk_receive_queue)) != NULL) {
+		skb_dst_set(skb, (void *)NULL);
+		kfree_skb(skb);
+	}
+}
+
+static void chtls_purge_write_queue(struct sock *sk)
+{
+	struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
+	struct sk_buff *skb;
+
+	while ((skb = __skb_dequeue(&csk->txq))) {
+		sk->sk_wmem_queued -= skb->truesize;
+		__kfree_skb(skb);
+	}
+}
+
+static void chtls_purge_recv_queue(struct sock *sk)
+{
+	struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
+	struct chtls_hws *tlsk = &csk->tlshws;
+	struct sk_buff *skb;
+
+	while ((skb = __skb_dequeue(&tlsk->sk_recv_queue)) != NULL) {
+		skb_dst_set(skb, NULL);
+		kfree_skb(skb);
+	}
+}
+
+static void abort_arp_failure(void *handle, struct sk_buff *skb)
+{
+	struct cpl_abort_req *req = cplhdr(skb);
+	struct chtls_dev *cdev;
+
+	cdev = (struct chtls_dev *)handle;
+	req->cmd = CPL_ABORT_NO_RST;
+	cxgb4_ofld_send(cdev->lldi->ports[0], skb);
+}
+
+static struct sk_buff *alloc_ctrl_skb(struct sk_buff *skb, int len)
+{
+	if (likely(skb && !skb_shared(skb) && !skb_cloned(skb))) {
+		__skb_trim(skb, 0);
+		refcount_inc(&skb->users);
+	} else {
+		skb = alloc_skb(len, GFP_KERNEL | __GFP_NOFAIL);
+	}
+	return skb;
+}
+
+static void chtls_send_abort(struct sock *sk, int mode, struct sk_buff *skb)
+{
+	struct cpl_abort_req *req;
+	struct chtls_sock *csk;
+	struct tcp_sock *tp;
+
+	csk = rcu_dereference_sk_user_data(sk);
+	tp = tcp_sk(sk);
+
+	if (!skb)
+		skb = alloc_ctrl_skb(csk->txdata_skb_cache, sizeof(*req));
+
+	req = (struct cpl_abort_req *)skb_put(skb, sizeof(*req));
+	INIT_TP_WR_CPL(req, CPL_ABORT_REQ, csk->tid);
+	skb_set_queue_mapping(skb, (csk->txq_idx << 1) | CPL_PRIORITY_DATA);
+	req->rsvd0 = htonl(tp->snd_nxt);
+	req->rsvd1 = !csk_flag_nochk(csk, CSK_TX_DATA_SENT);
+	req->cmd = mode;
+	t4_set_arp_err_handler(skb, csk->cdev, abort_arp_failure);
+	send_or_defer(sk, tp, skb, mode == CPL_ABORT_SEND_RST);
+}
+
+static void chtls_send_reset(struct sock *sk, int mode, struct sk_buff *skb)
+{
+	struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
+
+	if (unlikely(csk_flag_nochk(csk, CSK_ABORT_SHUTDOWN) ||
+		     !csk->cdev)) {
+		if (sk->sk_state == TCP_SYN_RECV)
+			csk_set_flag(csk, CSK_RST_ABORTED);
+		goto out;
+	}
+
+	if (!csk_flag_nochk(csk, CSK_TX_DATA_SENT)) {
+		struct tcp_sock *tp = tcp_sk(sk);
+
+		if (send_tx_flowc_wr(sk, 0, tp->snd_nxt, tp->rcv_nxt) < 0)
+			WARN_ONCE(1, "send tx flowc error");
+		csk_set_flag(csk, CSK_TX_DATA_SENT);
+	}
+
+	csk_set_flag(csk, CSK_ABORT_RPL_PENDING);
+	chtls_purge_write_queue(sk);
+
+	csk_set_flag(csk, CSK_ABORT_SHUTDOWN);
+	if (sk->sk_state != TCP_SYN_RECV)
+		chtls_send_abort(sk, mode, skb);
+	else
+		chtls_set_tcb_field_rpl_skb(sk, TCB_T_FLAGS_W,
+					    TCB_T_FLAGS_V(TCB_T_FLAGS_M), 0,
+					    TCB_FIELD_COOKIE_TFLAG, 1);
+
+	return;
+out:
+	kfree_skb(skb);
+}
+
+static void release_tcp_port(struct sock *sk)
+{
+	if (inet_csk(sk)->icsk_bind_hash)
+		inet_put_port(sk);
+}
+
+static void tcp_uncork(struct sock *sk)
+{
+	struct tcp_sock *tp = tcp_sk(sk);
+
+	if (tp->nonagle & TCP_NAGLE_CORK) {
+		tp->nonagle &= ~TCP_NAGLE_CORK;
+		chtls_tcp_push(sk, 0);
+	}
+}
+
+static void chtls_close_conn(struct sock *sk)
+{
+	struct cpl_close_con_req *req;
+	struct chtls_sock *csk;
+	struct sk_buff *skb;
+	unsigned int tid;
+	unsigned int len;
+
+	len = roundup(sizeof(struct cpl_close_con_req), 16);
+	csk = rcu_dereference_sk_user_data(sk);
+	tid = csk->tid;
+
+	skb = alloc_skb(len, GFP_KERNEL | __GFP_NOFAIL);
+	req = (struct cpl_close_con_req *)__skb_put(skb, len);
+	memset(req, 0, len);
+	req->wr.wr_hi = htonl(FW_WR_OP_V(FW_TP_WR) |
+			      FW_WR_IMMDLEN_V(sizeof(*req) -
+					      sizeof(req->wr)));
+	req->wr.wr_mid = htonl(FW_WR_LEN16_V(DIV_ROUND_UP(sizeof(*req), 16)) |
+			       FW_WR_FLOWID_V(tid));
+
+	OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_CLOSE_CON_REQ, tid));
+
+	tcp_uncork(sk);
+	skb_entail(sk, skb, ULPCB_FLAG_NO_HDR | ULPCB_FLAG_NO_APPEND);
+	if (sk->sk_state != TCP_SYN_SENT)
+		chtls_push_frames(csk, 1);
+}
+
+/*
+ * Perform a state transition during close and return the actions indicated
+ * for the transition.  Do not make this function inline, the main reason
+ * it exists at all is to avoid multiple inlining of tcp_set_state.
+ */
+static int make_close_transition(struct sock *sk)
+{
+	int next = (int)new_state[sk->sk_state];
+
+	tcp_set_state(sk, next & TCP_STATE_MASK);
+	return next & TCP_ACTION_FIN;
+}
+
+void chtls_close(struct sock *sk, long timeout)
+{
+	int data_lost, prev_state;
+	struct chtls_sock *csk;
+
+	csk = rcu_dereference_sk_user_data(sk);
+
+	lock_sock(sk);
+	sk->sk_shutdown |= SHUTDOWN_MASK;
+
+	data_lost = skb_queue_len(&sk->sk_receive_queue);
+	data_lost |= skb_queue_len(&csk->tlshws.sk_recv_queue);
+	chtls_purge_recv_queue(sk);
+	chtls_purge_receive_queue(sk);
+
+	if (sk->sk_state == TCP_CLOSE) {
+		goto wait;
+	} else if (data_lost || sk->sk_state == TCP_SYN_SENT) {
+		chtls_send_reset(sk, CPL_ABORT_SEND_RST, NULL);
+		release_tcp_port(sk);
+		goto unlock;
+	} else if (sock_flag(sk, SOCK_LINGER) && !sk->sk_lingertime) {
+		sk->sk_prot->disconnect(sk, 0);
+	} else if (make_close_transition(sk)) {
+		chtls_close_conn(sk);
+	}
+wait:
+	if (timeout)
+		sk_stream_wait_close(sk, timeout);
+
+unlock:
+	prev_state = sk->sk_state;
+	sock_hold(sk);
+	sock_orphan(sk);
+
+	release_sock(sk);
+
+	local_bh_disable();
+	bh_lock_sock(sk);
+
+	if (prev_state != TCP_CLOSE && sk->sk_state == TCP_CLOSE)
+		goto out;
+
+	if (sk->sk_state == TCP_FIN_WAIT2 && tcp_sk(sk)->linger2 < 0 &&
+	    !csk_flag(sk, CSK_ABORT_SHUTDOWN)) {
+		struct sk_buff *skb;
+
+		skb = alloc_skb(sizeof(struct cpl_abort_req), GFP_ATOMIC);
+		if (skb)
+			chtls_send_reset(sk, CPL_ABORT_SEND_RST, skb);
+	}
+
+	if (sk->sk_state == TCP_CLOSE)
+		inet_csk_destroy_sock(sk);
+
+out:
+	bh_unlock_sock(sk);
+	local_bh_enable();
+	sock_put(sk);
+}
+
+/*
+ * Wait until a socket enters on of the given states.
+ */
+static int wait_for_states(struct sock *sk, unsigned int states)
+{
+	DECLARE_WAITQUEUE(wait, current);
+	struct socket_wq _sk_wq;
+	long current_timeo;
+	int err = 0;
+
+	current_timeo = 200;
+
+	/*
+	 * We want this to work even when there's no associated struct socket.
+	 * In that case we provide a temporary wait_queue_head_t.
+	 */
+	if (!sk->sk_wq) {
+		init_waitqueue_head(&_sk_wq.wait);
+		_sk_wq.fasync_list = NULL;
+		init_rcu_head_on_stack(&_sk_wq.rcu);
+		RCU_INIT_POINTER(sk->sk_wq, &_sk_wq);
+	}
+
+	add_wait_queue(sk_sleep(sk), &wait);
+	while (!sk_in_state(sk, states)) {
+		if (!current_timeo) {
+			err = -EBUSY;
+			break;
+		}
+		if (signal_pending(current)) {
+			err = sock_intr_errno(current_timeo);
+			break;
+		}
+		set_current_state(TASK_UNINTERRUPTIBLE);
+		release_sock(sk);
+		if (!sk_in_state(sk, states))
+			current_timeo = schedule_timeout(current_timeo);
+		__set_current_state(TASK_RUNNING);
+		lock_sock(sk);
+	}
+	remove_wait_queue(sk_sleep(sk), &wait);
+
+	if (rcu_dereference(sk->sk_wq) == &_sk_wq)
+		sk->sk_wq = NULL;
+	return err;
+}
+
+int chtls_disconnect(struct sock *sk, int flags)
+{
+	struct tcp_sock *tp;
+	int err;
+
+	tp = tcp_sk(sk);
+	chtls_purge_recv_queue(sk);
+	chtls_purge_receive_queue(sk);
+	chtls_purge_write_queue(sk);
+
+	if (sk->sk_state != TCP_CLOSE) {
+		sk->sk_err = ECONNRESET;
+		chtls_send_reset(sk, CPL_ABORT_SEND_RST, NULL);
+		err = wait_for_states(sk, TCPF_CLOSE);
+		if (err)
+			return err;
+	}
+	chtls_purge_recv_queue(sk);
+	chtls_purge_receive_queue(sk);
+	tp->max_window = 0xFFFF << (tp->rx_opt.snd_wscale);
+	return tcp_disconnect(sk, flags);
+}
+
+#define SHUTDOWN_ELIGIBLE_STATE (TCPF_ESTABLISHED | \
+				 TCPF_SYN_RECV | TCPF_CLOSE_WAIT)
+void chtls_shutdown(struct sock *sk, int how)
+{
+	if ((how & SEND_SHUTDOWN) &&
+	    sk_in_state(sk, SHUTDOWN_ELIGIBLE_STATE) &&
+	    make_close_transition(sk))
+		chtls_close_conn(sk);
+}
+
+void chtls_destroy_sock(struct sock *sk)
+{
+	struct chtls_sock *csk;
+
+	csk = rcu_dereference_sk_user_data(sk);
+	chtls_purge_recv_queue(sk);
+	csk->ulp_mode = ULP_MODE_NONE;
+	chtls_purge_write_queue(sk);
+	free_tls_keyid(sk);
+	kref_put(&csk->kref, chtls_sock_release);
+	if (sk->sk_family == AF_INET)
+		sk->sk_prot = &tcp_prot;
+#if IS_ENABLED(CONFIG_IPV6)
+	else
+		sk->sk_prot = &tcpv6_prot;
+#endif
+	sk->sk_prot->destroy(sk);
+}
+
+static void reset_listen_child(struct sock *child)
+{
+	struct chtls_sock *csk = rcu_dereference_sk_user_data(child);
+	struct sk_buff *skb;
+
+	skb = alloc_ctrl_skb(csk->txdata_skb_cache,
+			     sizeof(struct cpl_abort_req));
+
+	chtls_send_reset(child, CPL_ABORT_SEND_RST, skb);
+	sock_orphan(child);
+	INC_ORPHAN_COUNT(child);
+	if (child->sk_state == TCP_CLOSE)
+		inet_csk_destroy_sock(child);
+}
+
+static void chtls_disconnect_acceptq(struct sock *listen_sk)
+{
+	struct request_sock **pprev;
+
+	pprev = ACCEPT_QUEUE(listen_sk);
+	while (*pprev) {
+		struct request_sock *req = *pprev;
+
+		if (req->rsk_ops == &chtls_rsk_ops ||
+		    req->rsk_ops == &chtls_rsk_opsv6) {
+			struct sock *child = req->sk;
+
+			*pprev = req->dl_next;
+			sk_acceptq_removed(listen_sk);
+			reqsk_put(req);
+			sock_hold(child);
+			local_bh_disable();
+			bh_lock_sock(child);
+			release_tcp_port(child);
+			reset_listen_child(child);
+			bh_unlock_sock(child);
+			local_bh_enable();
+			sock_put(child);
+		} else {
+			pprev = &req->dl_next;
+		}
+	}
+}
+
+static int listen_hashfn(const struct sock *sk)
+{
+	return ((unsigned long)sk >> 10) & (LISTEN_INFO_HASH_SIZE - 1);
+}
+
+static struct listen_info *listen_hash_add(struct chtls_dev *cdev,
+					   struct sock *sk,
+					   unsigned int stid)
+{
+	struct listen_info *p = kmalloc(sizeof(*p), GFP_KERNEL);
+
+	if (p) {
+		int key = listen_hashfn(sk);
+
+		p->sk = sk;
+		p->stid = stid;
+		spin_lock(&cdev->listen_lock);
+		p->next = cdev->listen_hash_tab[key];
+		cdev->listen_hash_tab[key] = p;
+		spin_unlock(&cdev->listen_lock);
+	}
+	return p;
+}
+
+static int listen_hash_find(struct chtls_dev *cdev,
+			    struct sock *sk)
+{
+	struct listen_info *p;
+	int stid = -1;
+	int key;
+
+	key = listen_hashfn(sk);
+
+	spin_lock(&cdev->listen_lock);
+	for (p = cdev->listen_hash_tab[key]; p; p = p->next)
+		if (p->sk == sk) {
+			stid = p->stid;
+			break;
+		}
+	spin_unlock(&cdev->listen_lock);
+	return stid;
+}
+
+static int listen_hash_del(struct chtls_dev *cdev,
+			   struct sock *sk)
+{
+	struct listen_info *p, **prev;
+	int stid = -1;
+	int key;
+
+	key = listen_hashfn(sk);
+	prev = &cdev->listen_hash_tab[key];
+
+	spin_lock(&cdev->listen_lock);
+	for (p = *prev; p; prev = &p->next, p = p->next)
+		if (p->sk == sk) {
+			stid = p->stid;
+			*prev = p->next;
+			kfree(p);
+			break;
+		}
+	spin_unlock(&cdev->listen_lock);
+	return stid;
+}
+
+static void cleanup_syn_rcv_conn(struct sock *child, struct sock *parent)
+{
+	struct request_sock *req;
+	struct chtls_sock *csk;
+
+	csk = rcu_dereference_sk_user_data(child);
+	req = csk->passive_reap_next;
+
+	reqsk_queue_removed(&inet_csk(parent)->icsk_accept_queue, req);
+	__skb_unlink((struct sk_buff *)&csk->synq, &csk->listen_ctx->synq);
+	chtls_reqsk_free(req);
+	csk->passive_reap_next = NULL;
+}
+
+static void chtls_reset_synq(struct listen_ctx *listen_ctx)
+{
+	struct sock *listen_sk = listen_ctx->lsk;
+
+	while (!skb_queue_empty(&listen_ctx->synq)) {
+		struct chtls_sock *csk =
+			container_of((struct synq *)skb_peek
+				(&listen_ctx->synq), struct chtls_sock, synq);
+		struct sock *child = csk->sk;
+
+		cleanup_syn_rcv_conn(child, listen_sk);
+		sock_hold(child);
+		local_bh_disable();
+		bh_lock_sock(child);
+		release_tcp_port(child);
+		reset_listen_child(child);
+		bh_unlock_sock(child);
+		local_bh_enable();
+		sock_put(child);
+	}
+}
+
+int chtls_listen_start(struct chtls_dev *cdev, struct sock *sk)
+{
+	struct net_device *ndev;
+#if IS_ENABLED(CONFIG_IPV6)
+	bool clip_valid = false;
+#endif
+	struct listen_ctx *ctx;
+	struct adapter *adap;
+	struct port_info *pi;
+	int ret = 0;
+	int stid;
+
+	rcu_read_lock();
+	ndev = chtls_find_netdev(cdev, sk);
+	rcu_read_unlock();
+	if (!ndev)
+		return -EBADF;
+
+	pi = netdev_priv(ndev);
+	adap = pi->adapter;
+	if (!(adap->flags & CXGB4_FULL_INIT_DONE))
+		return -EBADF;
+
+	if (listen_hash_find(cdev, sk) >= 0)   /* already have it */
+		return -EADDRINUSE;
+
+	ctx = kmalloc(sizeof(*ctx), GFP_KERNEL);
+	if (!ctx)
+		return -ENOMEM;
+
+	__module_get(THIS_MODULE);
+	ctx->lsk = sk;
+	ctx->cdev = cdev;
+	ctx->state = T4_LISTEN_START_PENDING;
+	skb_queue_head_init(&ctx->synq);
+
+	stid = cxgb4_alloc_stid(cdev->tids, sk->sk_family, ctx);
+	if (stid < 0)
+		goto free_ctx;
+
+	sock_hold(sk);
+	if (!listen_hash_add(cdev, sk, stid))
+		goto free_stid;
+
+	if (sk->sk_family == PF_INET) {
+		ret = cxgb4_create_server(ndev, stid,
+					  inet_sk(sk)->inet_rcv_saddr,
+					  inet_sk(sk)->inet_sport, 0,
+					  cdev->lldi->rxq_ids[0]);
+#if IS_ENABLED(CONFIG_IPV6)
+	} else {
+		int addr_type;
+
+		addr_type = ipv6_addr_type(&sk->sk_v6_rcv_saddr);
+		if (addr_type != IPV6_ADDR_ANY) {
+			ret = cxgb4_clip_get(ndev, (const u32 *)
+					     &sk->sk_v6_rcv_saddr, 1);
+			if (ret)
+				goto del_hash;
+			clip_valid = true;
+		}
+		ret = cxgb4_create_server6(ndev, stid,
+					   &sk->sk_v6_rcv_saddr,
+					   inet_sk(sk)->inet_sport,
+					   cdev->lldi->rxq_ids[0]);
+#endif
+	}
+	if (ret > 0)
+		ret = net_xmit_errno(ret);
+	if (ret)
+		goto del_hash;
+	return 0;
+del_hash:
+#if IS_ENABLED(CONFIG_IPV6)
+	if (clip_valid)
+		cxgb4_clip_release(ndev, (const u32 *)&sk->sk_v6_rcv_saddr, 1);
+#endif
+	listen_hash_del(cdev, sk);
+free_stid:
+	cxgb4_free_stid(cdev->tids, stid, sk->sk_family);
+	sock_put(sk);
+free_ctx:
+	kfree(ctx);
+	module_put(THIS_MODULE);
+	return -EBADF;
+}
+
+void chtls_listen_stop(struct chtls_dev *cdev, struct sock *sk)
+{
+	struct listen_ctx *listen_ctx;
+	int stid;
+
+	stid = listen_hash_del(cdev, sk);
+	if (stid < 0)
+		return;
+
+	listen_ctx = (struct listen_ctx *)lookup_stid(cdev->tids, stid);
+	chtls_reset_synq(listen_ctx);
+
+	cxgb4_remove_server(cdev->lldi->ports[0], stid,
+			    cdev->lldi->rxq_ids[0], sk->sk_family == PF_INET6);
+
+#if IS_ENABLED(CONFIG_IPV6)
+	if (sk->sk_family == PF_INET6) {
+		struct net_device *ndev = chtls_find_netdev(cdev, sk);
+		int addr_type = 0;
+
+		addr_type = ipv6_addr_type((const struct in6_addr *)
+					  &sk->sk_v6_rcv_saddr);
+		if (addr_type != IPV6_ADDR_ANY)
+			cxgb4_clip_release(ndev, (const u32 *)
+					   &sk->sk_v6_rcv_saddr, 1);
+	}
+#endif
+	chtls_disconnect_acceptq(sk);
+}
+
+static int chtls_pass_open_rpl(struct chtls_dev *cdev, struct sk_buff *skb)
+{
+	struct cpl_pass_open_rpl *rpl = cplhdr(skb) + RSS_HDR;
+	unsigned int stid = GET_TID(rpl);
+	struct listen_ctx *listen_ctx;
+
+	listen_ctx = (struct listen_ctx *)lookup_stid(cdev->tids, stid);
+	if (!listen_ctx)
+		return CPL_RET_BUF_DONE;
+
+	if (listen_ctx->state == T4_LISTEN_START_PENDING) {
+		listen_ctx->state = T4_LISTEN_STARTED;
+		return CPL_RET_BUF_DONE;
+	}
+
+	if (rpl->status != CPL_ERR_NONE) {
+		pr_info("Unexpected PASS_OPEN_RPL status %u for STID %u\n",
+			rpl->status, stid);
+	} else {
+		cxgb4_free_stid(cdev->tids, stid, listen_ctx->lsk->sk_family);
+		sock_put(listen_ctx->lsk);
+		kfree(listen_ctx);
+		module_put(THIS_MODULE);
+	}
+	return CPL_RET_BUF_DONE;
+}
+
+static int chtls_close_listsrv_rpl(struct chtls_dev *cdev, struct sk_buff *skb)
+{
+	struct cpl_close_listsvr_rpl *rpl = cplhdr(skb) + RSS_HDR;
+	struct listen_ctx *listen_ctx;
+	unsigned int stid;
+	void *data;
+
+	stid = GET_TID(rpl);
+	data = lookup_stid(cdev->tids, stid);
+	listen_ctx = (struct listen_ctx *)data;
+
+	if (rpl->status != CPL_ERR_NONE) {
+		pr_info("Unexpected CLOSE_LISTSRV_RPL status %u for STID %u\n",
+			rpl->status, stid);
+	} else {
+		cxgb4_free_stid(cdev->tids, stid, listen_ctx->lsk->sk_family);
+		sock_put(listen_ctx->lsk);
+		kfree(listen_ctx);
+		module_put(THIS_MODULE);
+	}
+	return CPL_RET_BUF_DONE;
+}
+
+static void chtls_purge_wr_queue(struct sock *sk)
+{
+	struct sk_buff *skb;
+
+	while ((skb = dequeue_wr(sk)) != NULL)
+		kfree_skb(skb);
+}
+
+static void chtls_release_resources(struct sock *sk)
+{
+	struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
+	struct chtls_dev *cdev = csk->cdev;
+	unsigned int tid = csk->tid;
+	struct tid_info *tids;
+
+	if (!cdev)
+		return;
+
+	tids = cdev->tids;
+	kfree_skb(csk->txdata_skb_cache);
+	csk->txdata_skb_cache = NULL;
+
+	if (csk->wr_credits != csk->wr_max_credits) {
+		chtls_purge_wr_queue(sk);
+		chtls_reset_wr_list(csk);
+	}
+
+	if (csk->l2t_entry) {
+		cxgb4_l2t_release(csk->l2t_entry);
+		csk->l2t_entry = NULL;
+	}
+
+	if (sk->sk_state != TCP_SYN_SENT) {
+		cxgb4_remove_tid(tids, csk->port_id, tid, sk->sk_family);
+		sock_put(sk);
+	}
+}
+
+static void chtls_conn_done(struct sock *sk)
+{
+	if (sock_flag(sk, SOCK_DEAD))
+		chtls_purge_receive_queue(sk);
+	sk_wakeup_sleepers(sk, 0);
+	tcp_done(sk);
+}
+
+static void do_abort_syn_rcv(struct sock *child, struct sock *parent)
+{
+	/*
+	 * If the server is still open we clean up the child connection,
+	 * otherwise the server already did the clean up as it was purging
+	 * its SYN queue and the skb was just sitting in its backlog.
+	 */
+	if (likely(parent->sk_state == TCP_LISTEN)) {
+		cleanup_syn_rcv_conn(child, parent);
+		/* Without the below call to sock_orphan,
+		 * we leak the socket resource with syn_flood test
+		 * as inet_csk_destroy_sock will not be called
+		 * in tcp_done since SOCK_DEAD flag is not set.
+		 * Kernel handles this differently where new socket is
+		 * created only after 3 way handshake is done.
+		 */
+		sock_orphan(child);
+		INC_ORPHAN_COUNT(child);
+		chtls_release_resources(child);
+		chtls_conn_done(child);
+	} else {
+		if (csk_flag(child, CSK_RST_ABORTED)) {
+			chtls_release_resources(child);
+			chtls_conn_done(child);
+		}
+	}
+}
+
+static void pass_open_abort(struct sock *child, struct sock *parent,
+			    struct sk_buff *skb)
+{
+	do_abort_syn_rcv(child, parent);
+	kfree_skb(skb);
+}
+
+static void bl_pass_open_abort(struct sock *lsk, struct sk_buff *skb)
+{
+	pass_open_abort(skb->sk, lsk, skb);
+}
+
+static void chtls_pass_open_arp_failure(struct sock *sk,
+					struct sk_buff *skb)
+{
+	const struct request_sock *oreq;
+	struct chtls_sock *csk;
+	struct chtls_dev *cdev;
+	struct sock *parent;
+	void *data;
+
+	csk = rcu_dereference_sk_user_data(sk);
+	cdev = csk->cdev;
+
+	/*
+	 * If the connection is being aborted due to the parent listening
+	 * socket going away there's nothing to do, the ABORT_REQ will close
+	 * the connection.
+	 */
+	if (csk_flag(sk, CSK_ABORT_RPL_PENDING)) {
+		kfree_skb(skb);
+		return;
+	}
+
+	oreq = csk->passive_reap_next;
+	data = lookup_stid(cdev->tids, oreq->ts_recent);
+	parent = ((struct listen_ctx *)data)->lsk;
+
+	bh_lock_sock(parent);
+	if (!sock_owned_by_user(parent)) {
+		pass_open_abort(sk, parent, skb);
+	} else {
+		BLOG_SKB_CB(skb)->backlog_rcv = bl_pass_open_abort;
+		__sk_add_backlog(parent, skb);
+	}
+	bh_unlock_sock(parent);
+}
+
+static void chtls_accept_rpl_arp_failure(void *handle,
+					 struct sk_buff *skb)
+{
+	struct sock *sk = (struct sock *)handle;
+
+	sock_hold(sk);
+	process_cpl_msg(chtls_pass_open_arp_failure, sk, skb);
+	sock_put(sk);
+}
+
+static unsigned int chtls_select_mss(const struct chtls_sock *csk,
+				     unsigned int pmtu,
+				     struct cpl_pass_accept_req *req)
+{
+	struct chtls_dev *cdev;
+	struct dst_entry *dst;
+	unsigned int tcpoptsz;
+	unsigned int iphdrsz;
+	unsigned int mtu_idx;
+	struct tcp_sock *tp;
+	unsigned int mss;
+	struct sock *sk;
+
+	mss = ntohs(req->tcpopt.mss);
+	sk = csk->sk;
+	dst = __sk_dst_get(sk);
+	cdev = csk->cdev;
+	tp = tcp_sk(sk);
+	tcpoptsz = 0;
+
+#if IS_ENABLED(CONFIG_IPV6)
+	if (sk->sk_family == AF_INET6)
+		iphdrsz = sizeof(struct ipv6hdr) + sizeof(struct tcphdr);
+	else
+#endif
+		iphdrsz = sizeof(struct iphdr) + sizeof(struct tcphdr);
+	if (req->tcpopt.tstamp)
+		tcpoptsz += round_up(TCPOLEN_TIMESTAMP, 4);
+
+	tp->advmss = dst_metric_advmss(dst);
+	if (USER_MSS(tp) && tp->advmss > USER_MSS(tp))
+		tp->advmss = USER_MSS(tp);
+	if (tp->advmss > pmtu - iphdrsz)
+		tp->advmss = pmtu - iphdrsz;
+	if (mss && tp->advmss > mss)
+		tp->advmss = mss;
+
+	tp->advmss = cxgb4_best_aligned_mtu(cdev->lldi->mtus,
+					    iphdrsz + tcpoptsz,
+					    tp->advmss - tcpoptsz,
+					    8, &mtu_idx);
+	tp->advmss -= iphdrsz;
+
+	inet_csk(sk)->icsk_pmtu_cookie = pmtu;
+	return mtu_idx;
+}
+
+static unsigned int select_rcv_wscale(int space, int wscale_ok, int win_clamp)
+{
+	int wscale = 0;
+
+	if (space > MAX_RCV_WND)
+		space = MAX_RCV_WND;
+	if (win_clamp && win_clamp < space)
+		space = win_clamp;
+
+	if (wscale_ok) {
+		while (wscale < 14 && (65535 << wscale) < space)
+			wscale++;
+	}
+	return wscale;
+}
+
+static void chtls_pass_accept_rpl(struct sk_buff *skb,
+				  struct cpl_pass_accept_req *req,
+				  unsigned int tid)
+
+{
+	struct cpl_t5_pass_accept_rpl *rpl5;
+	struct cxgb4_lld_info *lldi;
+	const struct tcphdr *tcph;
+	const struct tcp_sock *tp;
+	struct chtls_sock *csk;
+	unsigned int len;
+	struct sock *sk;
+	u32 opt2, hlen;
+	u64 opt0;
+
+	sk = skb->sk;
+	tp = tcp_sk(sk);
+	csk = sk->sk_user_data;
+	csk->tid = tid;
+	lldi = csk->cdev->lldi;
+	len = roundup(sizeof(*rpl5), 16);
+
+	rpl5 = __skb_put_zero(skb, len);
+	INIT_TP_WR(rpl5, tid);
+
+	OPCODE_TID(rpl5) = cpu_to_be32(MK_OPCODE_TID(CPL_PASS_ACCEPT_RPL,
+						     csk->tid));
+	csk->mtu_idx = chtls_select_mss(csk, dst_mtu(__sk_dst_get(sk)),
+					req);
+	opt0 = TCAM_BYPASS_F |
+	       WND_SCALE_V(RCV_WSCALE(tp)) |
+	       MSS_IDX_V(csk->mtu_idx) |
+	       L2T_IDX_V(csk->l2t_entry->idx) |
+	       NAGLE_V(!(tp->nonagle & TCP_NAGLE_OFF)) |
+	       TX_CHAN_V(csk->tx_chan) |
+	       SMAC_SEL_V(csk->smac_idx) |
+	       DSCP_V(csk->tos >> 2) |
+	       ULP_MODE_V(ULP_MODE_TLS) |
+	       RCV_BUFSIZ_V(min(tp->rcv_wnd >> 10, RCV_BUFSIZ_M));
+
+	opt2 = RX_CHANNEL_V(0) |
+		RSS_QUEUE_VALID_F | RSS_QUEUE_V(csk->rss_qid);
+
+	if (!is_t5(lldi->adapter_type))
+		opt2 |= RX_FC_DISABLE_F;
+	if (req->tcpopt.tstamp)
+		opt2 |= TSTAMPS_EN_F;
+	if (req->tcpopt.sack)
+		opt2 |= SACK_EN_F;
+	hlen = ntohl(req->hdr_len);
+
+	tcph = (struct tcphdr *)((u8 *)(req + 1) +
+			T6_ETH_HDR_LEN_G(hlen) + T6_IP_HDR_LEN_G(hlen));
+	if (tcph->ece && tcph->cwr)
+		opt2 |= CCTRL_ECN_V(1);
+	opt2 |= CONG_CNTRL_V(CONG_ALG_NEWRENO);
+	opt2 |= T5_ISS_F;
+	opt2 |= T5_OPT_2_VALID_F;
+	opt2 |= WND_SCALE_EN_V(WSCALE_OK(tp));
+	rpl5->opt0 = cpu_to_be64(opt0);
+	rpl5->opt2 = cpu_to_be32(opt2);
+	rpl5->iss = cpu_to_be32((get_random_u32() & ~7UL) - 1);
+	set_wr_txq(skb, CPL_PRIORITY_SETUP, csk->port_id);
+	t4_set_arp_err_handler(skb, sk, chtls_accept_rpl_arp_failure);
+	cxgb4_l2t_send(csk->egress_dev, skb, csk->l2t_entry);
+}
+
+static void inet_inherit_port(struct sock *lsk, struct sock *newsk)
+{
+	local_bh_disable();
+	__inet_inherit_port(lsk, newsk);
+	local_bh_enable();
+}
+
+static int chtls_backlog_rcv(struct sock *sk, struct sk_buff *skb)
+{
+	if (skb->protocol) {
+		kfree_skb(skb);
+		return 0;
+	}
+	BLOG_SKB_CB(skb)->backlog_rcv(sk, skb);
+	return 0;
+}
+
+static void chtls_set_tcp_window(struct chtls_sock *csk)
+{
+	struct net_device *ndev = csk->egress_dev;
+	struct port_info *pi = netdev_priv(ndev);
+	unsigned int linkspeed;
+	u8 scale;
+
+	linkspeed = pi->link_cfg.speed;
+	scale = linkspeed / SPEED_10000;
+#define CHTLS_10G_RCVWIN (256 * 1024)
+	csk->rcv_win = CHTLS_10G_RCVWIN;
+	if (scale)
+		csk->rcv_win *= scale;
+#define CHTLS_10G_SNDWIN (256 * 1024)
+	csk->snd_win = CHTLS_10G_SNDWIN;
+	if (scale)
+		csk->snd_win *= scale;
+}
+
+static struct sock *chtls_recv_sock(struct sock *lsk,
+				    struct request_sock *oreq,
+				    void *network_hdr,
+				    const struct cpl_pass_accept_req *req,
+				    struct chtls_dev *cdev)
+{
+	struct adapter *adap = pci_get_drvdata(cdev->pdev);
+	struct neighbour *n = NULL;
+	struct inet_sock *newinet;
+	const struct iphdr *iph;
+	struct tls_context *ctx;
+	struct net_device *ndev;
+	struct chtls_sock *csk;
+	struct dst_entry *dst;
+	struct tcp_sock *tp;
+	struct sock *newsk;
+	bool found = false;
+	u16 port_id;
+	int rxq_idx;
+	int step, i;
+
+	iph = (const struct iphdr *)network_hdr;
+	newsk = tcp_create_openreq_child(lsk, oreq, cdev->askb);
+	if (!newsk)
+		goto free_oreq;
+
+	if (lsk->sk_family == AF_INET) {
+		dst = inet_csk_route_child_sock(lsk, newsk, oreq);
+		if (!dst)
+			goto free_sk;
+
+		n = dst_neigh_lookup(dst, &iph->saddr);
+#if IS_ENABLED(CONFIG_IPV6)
+	} else {
+		const struct ipv6hdr *ip6h;
+		struct flowi6 fl6;
+
+		ip6h = (const struct ipv6hdr *)network_hdr;
+		memset(&fl6, 0, sizeof(fl6));
+		fl6.flowi6_proto = IPPROTO_TCP;
+		fl6.saddr = ip6h->daddr;
+		fl6.daddr = ip6h->saddr;
+		fl6.fl6_dport = inet_rsk(oreq)->ir_rmt_port;
+		fl6.fl6_sport = htons(inet_rsk(oreq)->ir_num);
+		security_req_classify_flow(oreq, flowi6_to_flowi_common(&fl6));
+		dst = ip6_dst_lookup_flow(sock_net(lsk), lsk, &fl6, NULL);
+		if (IS_ERR(dst))
+			goto free_sk;
+		n = dst_neigh_lookup(dst, &ip6h->saddr);
+#endif
+	}
+	if (!n || !n->dev)
+		goto free_dst;
+
+	ndev = n->dev;
+	if (is_vlan_dev(ndev))
+		ndev = vlan_dev_real_dev(ndev);
+
+	for_each_port(adap, i)
+		if (cdev->ports[i] == ndev)
+			found = true;
+
+	if (!found)
+		goto free_dst;
+
+	port_id = cxgb4_port_idx(ndev);
+
+	csk = chtls_sock_create(cdev);
+	if (!csk)
+		goto free_dst;
+
+	csk->l2t_entry = cxgb4_l2t_get(cdev->lldi->l2t, n, ndev, 0);
+	if (!csk->l2t_entry)
+		goto free_csk;
+
+	newsk->sk_user_data = csk;
+	newsk->sk_backlog_rcv = chtls_backlog_rcv;
+
+	tp = tcp_sk(newsk);
+	newinet = inet_sk(newsk);
+
+	if (iph->version == 0x4) {
+		newinet->inet_daddr = iph->saddr;
+		newinet->inet_rcv_saddr = iph->daddr;
+		newinet->inet_saddr = iph->daddr;
+#if IS_ENABLED(CONFIG_IPV6)
+	} else {
+		struct tcp6_sock *newtcp6sk = (struct tcp6_sock *)newsk;
+		struct inet_request_sock *treq = inet_rsk(oreq);
+		struct ipv6_pinfo *newnp = inet6_sk(newsk);
+		struct ipv6_pinfo *np = inet6_sk(lsk);
+
+		inet_sk(newsk)->pinet6 = &newtcp6sk->inet6;
+		memcpy(newnp, np, sizeof(struct ipv6_pinfo));
+		newsk->sk_v6_daddr = treq->ir_v6_rmt_addr;
+		newsk->sk_v6_rcv_saddr = treq->ir_v6_loc_addr;
+		inet6_sk(newsk)->saddr = treq->ir_v6_loc_addr;
+		newnp->ipv6_fl_list = NULL;
+		newnp->pktoptions = NULL;
+		newsk->sk_bound_dev_if = treq->ir_iif;
+		newinet->inet_opt = NULL;
+		newinet->inet_daddr = LOOPBACK4_IPV6;
+		newinet->inet_saddr = LOOPBACK4_IPV6;
+#endif
+	}
+
+	oreq->ts_recent = PASS_OPEN_TID_G(ntohl(req->tos_stid));
+	sk_setup_caps(newsk, dst);
+	ctx = tls_get_ctx(lsk);
+	newsk->sk_destruct = ctx->sk_destruct;
+	newsk->sk_prot_creator = lsk->sk_prot_creator;
+	csk->sk = newsk;
+	csk->passive_reap_next = oreq;
+	csk->tx_chan = cxgb4_port_chan(ndev);
+	csk->port_id = port_id;
+	csk->egress_dev = ndev;
+	csk->tos = PASS_OPEN_TOS_G(ntohl(req->tos_stid));
+	chtls_set_tcp_window(csk);
+	tp->rcv_wnd = csk->rcv_win;
+	csk->sndbuf = csk->snd_win;
+	csk->ulp_mode = ULP_MODE_TLS;
+	step = cdev->lldi->nrxq / cdev->lldi->nchan;
+	rxq_idx = port_id * step;
+	rxq_idx += cdev->round_robin_cnt++ % step;
+	csk->rss_qid = cdev->lldi->rxq_ids[rxq_idx];
+	csk->txq_idx = (rxq_idx < cdev->lldi->ntxq) ? rxq_idx :
+			port_id * step;
+	csk->sndbuf = newsk->sk_sndbuf;
+	csk->smac_idx = ((struct port_info *)netdev_priv(ndev))->smt_idx;
+	RCV_WSCALE(tp) = select_rcv_wscale(tcp_full_space(newsk),
+					   READ_ONCE(sock_net(newsk)->
+						     ipv4.sysctl_tcp_window_scaling),
+					   tp->window_clamp);
+	neigh_release(n);
+	inet_inherit_port(lsk, newsk);
+	csk_set_flag(csk, CSK_CONN_INLINE);
+	bh_unlock_sock(newsk); /* tcp_create_openreq_child ->sk_clone_lock */
+
+	return newsk;
+free_csk:
+	chtls_sock_release(&csk->kref);
+free_dst:
+	if (n)
+		neigh_release(n);
+	dst_release(dst);
+free_sk:
+	inet_csk_prepare_forced_close(newsk);
+	tcp_done(newsk);
+free_oreq:
+	chtls_reqsk_free(oreq);
+	return NULL;
+}
+
+/*
+ * Populate a TID_RELEASE WR.  The skb must be already propely sized.
+ */
+static  void mk_tid_release(struct sk_buff *skb,
+			    unsigned int chan, unsigned int tid)
+{
+	struct cpl_tid_release *req;
+	unsigned int len;
+
+	len = roundup(sizeof(struct cpl_tid_release), 16);
+	req = (struct cpl_tid_release *)__skb_put(skb, len);
+	memset(req, 0, len);
+	set_wr_txq(skb, CPL_PRIORITY_SETUP, chan);
+	INIT_TP_WR_CPL(req, CPL_TID_RELEASE, tid);
+}
+
+static int chtls_get_module(struct sock *sk)
+{
+	struct inet_connection_sock *icsk = inet_csk(sk);
+
+	if (!try_module_get(icsk->icsk_ulp_ops->owner))
+		return -1;
+
+	return 0;
+}
+
+static void chtls_pass_accept_request(struct sock *sk,
+				      struct sk_buff *skb)
+{
+	struct cpl_t5_pass_accept_rpl *rpl;
+	struct cpl_pass_accept_req *req;
+	struct listen_ctx *listen_ctx;
+	struct vlan_ethhdr *vlan_eh;
+	struct request_sock *oreq;
+	struct sk_buff *reply_skb;
+	struct chtls_sock *csk;
+	struct chtls_dev *cdev;
+	struct ipv6hdr *ip6h;
+	struct tcphdr *tcph;
+	struct sock *newsk;
+	struct ethhdr *eh;
+	struct iphdr *iph;
+	void *network_hdr;
+	unsigned int stid;
+	unsigned int len;
+	unsigned int tid;
+	bool th_ecn, ect;
+	__u8 ip_dsfield; /* IPv4 tos or IPv6 dsfield */
+	u16 eth_hdr_len;
+	bool ecn_ok;
+
+	req = cplhdr(skb) + RSS_HDR;
+	tid = GET_TID(req);
+	cdev = BLOG_SKB_CB(skb)->cdev;
+	newsk = lookup_tid(cdev->tids, tid);
+	stid = PASS_OPEN_TID_G(ntohl(req->tos_stid));
+	if (newsk) {
+		pr_info("tid (%d) already in use\n", tid);
+		return;
+	}
+
+	len = roundup(sizeof(*rpl), 16);
+	reply_skb = alloc_skb(len, GFP_ATOMIC);
+	if (!reply_skb) {
+		cxgb4_remove_tid(cdev->tids, 0, tid, sk->sk_family);
+		kfree_skb(skb);
+		return;
+	}
+
+	if (sk->sk_state != TCP_LISTEN)
+		goto reject;
+
+	if (inet_csk_reqsk_queue_is_full(sk))
+		goto reject;
+
+	if (sk_acceptq_is_full(sk))
+		goto reject;
+
+
+	eth_hdr_len = T6_ETH_HDR_LEN_G(ntohl(req->hdr_len));
+	if (eth_hdr_len == ETH_HLEN) {
+		eh = (struct ethhdr *)(req + 1);
+		iph = (struct iphdr *)(eh + 1);
+		ip6h = (struct ipv6hdr *)(eh + 1);
+		network_hdr = (void *)(eh + 1);
+	} else {
+		vlan_eh = (struct vlan_ethhdr *)(req + 1);
+		iph = (struct iphdr *)(vlan_eh + 1);
+		ip6h = (struct ipv6hdr *)(vlan_eh + 1);
+		network_hdr = (void *)(vlan_eh + 1);
+	}
+
+	if (iph->version == 0x4) {
+		tcph = (struct tcphdr *)(iph + 1);
+		skb_set_network_header(skb, (void *)iph - (void *)req);
+		oreq = inet_reqsk_alloc(&chtls_rsk_ops, sk, true);
+	} else {
+		tcph = (struct tcphdr *)(ip6h + 1);
+		skb_set_network_header(skb, (void *)ip6h - (void *)req);
+		oreq = inet_reqsk_alloc(&chtls_rsk_opsv6, sk, false);
+	}
+
+	if (!oreq)
+		goto reject;
+
+	oreq->rsk_rcv_wnd = 0;
+	oreq->rsk_window_clamp = 0;
+	oreq->syncookie = 0;
+	oreq->mss = 0;
+	oreq->ts_recent = 0;
+
+	tcp_rsk(oreq)->tfo_listener = false;
+	tcp_rsk(oreq)->rcv_isn = ntohl(tcph->seq);
+	chtls_set_req_port(oreq, tcph->source, tcph->dest);
+	if (iph->version == 0x4) {
+		chtls_set_req_addr(oreq, iph->daddr, iph->saddr);
+		ip_dsfield = ipv4_get_dsfield(iph);
+#if IS_ENABLED(CONFIG_IPV6)
+	} else {
+		inet_rsk(oreq)->ir_v6_rmt_addr = ipv6_hdr(skb)->saddr;
+		inet_rsk(oreq)->ir_v6_loc_addr = ipv6_hdr(skb)->daddr;
+		ip_dsfield = ipv6_get_dsfield(ipv6_hdr(skb));
+#endif
+	}
+	if (req->tcpopt.wsf <= 14 &&
+	    READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_window_scaling)) {
+		inet_rsk(oreq)->wscale_ok = 1;
+		inet_rsk(oreq)->snd_wscale = req->tcpopt.wsf;
+	}
+	inet_rsk(oreq)->ir_iif = sk->sk_bound_dev_if;
+	th_ecn = tcph->ece && tcph->cwr;
+	if (th_ecn) {
+		ect = !INET_ECN_is_not_ect(ip_dsfield);
+		ecn_ok = READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_ecn);
+		if ((!ect && ecn_ok) || tcp_ca_needs_ecn(sk))
+			inet_rsk(oreq)->ecn_ok = 1;
+	}
+
+	newsk = chtls_recv_sock(sk, oreq, network_hdr, req, cdev);
+	if (!newsk)
+		goto reject;
+
+	if (chtls_get_module(newsk))
+		goto reject;
+	inet_csk_reqsk_queue_added(sk);
+	reply_skb->sk = newsk;
+	chtls_install_cpl_ops(newsk);
+	cxgb4_insert_tid(cdev->tids, newsk, tid, newsk->sk_family);
+	csk = rcu_dereference_sk_user_data(newsk);
+	listen_ctx = (struct listen_ctx *)lookup_stid(cdev->tids, stid);
+	csk->listen_ctx = listen_ctx;
+	__skb_queue_tail(&listen_ctx->synq, (struct sk_buff *)&csk->synq);
+	chtls_pass_accept_rpl(reply_skb, req, tid);
+	kfree_skb(skb);
+	return;
+
+reject:
+	mk_tid_release(reply_skb, 0, tid);
+	cxgb4_ofld_send(cdev->lldi->ports[0], reply_skb);
+	kfree_skb(skb);
+}
+
+/*
+ * Handle a CPL_PASS_ACCEPT_REQ message.
+ */
+static int chtls_pass_accept_req(struct chtls_dev *cdev, struct sk_buff *skb)
+{
+	struct cpl_pass_accept_req *req = cplhdr(skb) + RSS_HDR;
+	struct listen_ctx *ctx;
+	unsigned int stid;
+	unsigned int tid;
+	struct sock *lsk;
+	void *data;
+
+	stid = PASS_OPEN_TID_G(ntohl(req->tos_stid));
+	tid = GET_TID(req);
+
+	data = lookup_stid(cdev->tids, stid);
+	if (!data)
+		return 1;
+
+	ctx = (struct listen_ctx *)data;
+	lsk = ctx->lsk;
+
+	if (unlikely(tid_out_of_range(cdev->tids, tid))) {
+		pr_info("passive open TID %u too large\n", tid);
+		return 1;
+	}
+
+	BLOG_SKB_CB(skb)->cdev = cdev;
+	process_cpl_msg(chtls_pass_accept_request, lsk, skb);
+	return 0;
+}
+
+/*
+ * Completes some final bits of initialization for just established connections
+ * and changes their state to TCP_ESTABLISHED.
+ *
+ * snd_isn here is the ISN after the SYN, i.e., the true ISN + 1.
+ */
+static void make_established(struct sock *sk, u32 snd_isn, unsigned int opt)
+{
+	struct tcp_sock *tp = tcp_sk(sk);
+
+	tp->pushed_seq = snd_isn;
+	tp->write_seq = snd_isn;
+	tp->snd_nxt = snd_isn;
+	tp->snd_una = snd_isn;
+	atomic_set(&inet_sk(sk)->inet_id, get_random_u16());
+	assign_rxopt(sk, opt);
+
+	if (tp->rcv_wnd > (RCV_BUFSIZ_M << 10))
+		tp->rcv_wup -= tp->rcv_wnd - (RCV_BUFSIZ_M << 10);
+
+	smp_mb();
+	tcp_set_state(sk, TCP_ESTABLISHED);
+}
+
+static void chtls_abort_conn(struct sock *sk, struct sk_buff *skb)
+{
+	struct sk_buff *abort_skb;
+
+	abort_skb = alloc_skb(sizeof(struct cpl_abort_req), GFP_ATOMIC);
+	if (abort_skb)
+		chtls_send_reset(sk, CPL_ABORT_SEND_RST, abort_skb);
+}
+
+static struct sock *reap_list;
+static DEFINE_SPINLOCK(reap_list_lock);
+
+/*
+ * Process the reap list.
+ */
+DECLARE_TASK_FUNC(process_reap_list, task_param)
+{
+	spin_lock_bh(&reap_list_lock);
+	while (reap_list) {
+		struct sock *sk = reap_list;
+		struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
+
+		reap_list = csk->passive_reap_next;
+		csk->passive_reap_next = NULL;
+		spin_unlock(&reap_list_lock);
+		sock_hold(sk);
+
+		bh_lock_sock(sk);
+		chtls_abort_conn(sk, NULL);
+		sock_orphan(sk);
+		if (sk->sk_state == TCP_CLOSE)
+			inet_csk_destroy_sock(sk);
+		bh_unlock_sock(sk);
+		sock_put(sk);
+		spin_lock(&reap_list_lock);
+	}
+	spin_unlock_bh(&reap_list_lock);
+}
+
+static DECLARE_WORK(reap_task, process_reap_list);
+
+static void add_to_reap_list(struct sock *sk)
+{
+	struct chtls_sock *csk = sk->sk_user_data;
+
+	local_bh_disable();
+	release_tcp_port(sk); /* release the port immediately */
+
+	spin_lock(&reap_list_lock);
+	csk->passive_reap_next = reap_list;
+	reap_list = sk;
+	if (!csk->passive_reap_next)
+		schedule_work(&reap_task);
+	spin_unlock(&reap_list_lock);
+	local_bh_enable();
+}
+
+static void add_pass_open_to_parent(struct sock *child, struct sock *lsk,
+				    struct chtls_dev *cdev)
+{
+	struct request_sock *oreq;
+	struct chtls_sock *csk;
+
+	if (lsk->sk_state != TCP_LISTEN)
+		return;
+
+	csk = child->sk_user_data;
+	oreq = csk->passive_reap_next;
+	csk->passive_reap_next = NULL;
+
+	reqsk_queue_removed(&inet_csk(lsk)->icsk_accept_queue, oreq);
+	__skb_unlink((struct sk_buff *)&csk->synq, &csk->listen_ctx->synq);
+
+	if (sk_acceptq_is_full(lsk)) {
+		chtls_reqsk_free(oreq);
+		add_to_reap_list(child);
+	} else {
+		refcount_set(&oreq->rsk_refcnt, 1);
+		inet_csk_reqsk_queue_add(lsk, oreq, child);
+		lsk->sk_data_ready(lsk);
+	}
+}
+
+static void bl_add_pass_open_to_parent(struct sock *lsk, struct sk_buff *skb)
+{
+	struct sock *child = skb->sk;
+
+	skb->sk = NULL;
+	add_pass_open_to_parent(child, lsk, BLOG_SKB_CB(skb)->cdev);
+	kfree_skb(skb);
+}
+
+static int chtls_pass_establish(struct chtls_dev *cdev, struct sk_buff *skb)
+{
+	struct cpl_pass_establish *req = cplhdr(skb) + RSS_HDR;
+	struct chtls_sock *csk;
+	struct sock *lsk, *sk;
+	unsigned int hwtid;
+
+	hwtid = GET_TID(req);
+	sk = lookup_tid(cdev->tids, hwtid);
+	if (!sk)
+		return (CPL_RET_UNKNOWN_TID | CPL_RET_BUF_DONE);
+
+	bh_lock_sock(sk);
+	if (unlikely(sock_owned_by_user(sk))) {
+		kfree_skb(skb);
+	} else {
+		unsigned int stid;
+		void *data;
+
+		csk = sk->sk_user_data;
+		csk->wr_max_credits = 64;
+		csk->wr_credits = 64;
+		csk->wr_unacked = 0;
+		make_established(sk, ntohl(req->snd_isn), ntohs(req->tcp_opt));
+		stid = PASS_OPEN_TID_G(ntohl(req->tos_stid));
+		sk->sk_state_change(sk);
+		if (unlikely(sk->sk_socket))
+			sk_wake_async(sk, 0, POLL_OUT);
+
+		data = lookup_stid(cdev->tids, stid);
+		if (!data) {
+			/* listening server close */
+			kfree_skb(skb);
+			goto unlock;
+		}
+		lsk = ((struct listen_ctx *)data)->lsk;
+
+		bh_lock_sock(lsk);
+		if (unlikely(skb_queue_empty(&csk->listen_ctx->synq))) {
+			/* removed from synq */
+			bh_unlock_sock(lsk);
+			kfree_skb(skb);
+			goto unlock;
+		}
+
+		if (likely(!sock_owned_by_user(lsk))) {
+			kfree_skb(skb);
+			add_pass_open_to_parent(sk, lsk, cdev);
+		} else {
+			skb->sk = sk;
+			BLOG_SKB_CB(skb)->cdev = cdev;
+			BLOG_SKB_CB(skb)->backlog_rcv =
+				bl_add_pass_open_to_parent;
+			__sk_add_backlog(lsk, skb);
+		}
+		bh_unlock_sock(lsk);
+	}
+unlock:
+	bh_unlock_sock(sk);
+	return 0;
+}
+
+/*
+ * Handle receipt of an urgent pointer.
+ */
+static void handle_urg_ptr(struct sock *sk, u32 urg_seq)
+{
+	struct tcp_sock *tp = tcp_sk(sk);
+
+	urg_seq--;
+	if (tp->urg_data && !after(urg_seq, tp->urg_seq))
+		return;	/* duplicate pointer */
+
+	sk_send_sigurg(sk);
+	if (tp->urg_seq == tp->copied_seq && tp->urg_data &&
+	    !sock_flag(sk, SOCK_URGINLINE) &&
+	    tp->copied_seq != tp->rcv_nxt) {
+		struct sk_buff *skb = skb_peek(&sk->sk_receive_queue);
+
+		tp->copied_seq++;
+		if (skb && tp->copied_seq - ULP_SKB_CB(skb)->seq >= skb->len)
+			chtls_free_skb(sk, skb);
+	}
+
+	tp->urg_data = TCP_URG_NOTYET;
+	tp->urg_seq = urg_seq;
+}
+
+static void check_sk_callbacks(struct chtls_sock *csk)
+{
+	struct sock *sk = csk->sk;
+
+	if (unlikely(sk->sk_user_data &&
+		     !csk_flag_nochk(csk, CSK_CALLBACKS_CHKD)))
+		csk_set_flag(csk, CSK_CALLBACKS_CHKD);
+}
+
+/*
+ * Handles Rx data that arrives in a state where the socket isn't accepting
+ * new data.
+ */
+static void handle_excess_rx(struct sock *sk, struct sk_buff *skb)
+{
+	if (!csk_flag(sk, CSK_ABORT_SHUTDOWN))
+		chtls_abort_conn(sk, skb);
+
+	kfree_skb(skb);
+}
+
+static void chtls_recv_data(struct sock *sk, struct sk_buff *skb)
+{
+	struct cpl_rx_data *hdr = cplhdr(skb) + RSS_HDR;
+	struct chtls_sock *csk;
+	struct tcp_sock *tp;
+
+	csk = rcu_dereference_sk_user_data(sk);
+	tp = tcp_sk(sk);
+
+	if (unlikely(sk->sk_shutdown & RCV_SHUTDOWN)) {
+		handle_excess_rx(sk, skb);
+		return;
+	}
+
+	ULP_SKB_CB(skb)->seq = ntohl(hdr->seq);
+	ULP_SKB_CB(skb)->psh = hdr->psh;
+	skb_ulp_mode(skb) = ULP_MODE_NONE;
+
+	skb_reset_transport_header(skb);
+	__skb_pull(skb, sizeof(*hdr) + RSS_HDR);
+	if (!skb->data_len)
+		__skb_trim(skb, ntohs(hdr->len));
+
+	if (unlikely(hdr->urg))
+		handle_urg_ptr(sk, tp->rcv_nxt + ntohs(hdr->urg));
+	if (unlikely(tp->urg_data == TCP_URG_NOTYET &&
+		     tp->urg_seq - tp->rcv_nxt < skb->len))
+		tp->urg_data = TCP_URG_VALID |
+			       skb->data[tp->urg_seq - tp->rcv_nxt];
+
+	if (unlikely(hdr->dack_mode != csk->delack_mode)) {
+		csk->delack_mode = hdr->dack_mode;
+		csk->delack_seq = tp->rcv_nxt;
+	}
+
+	tcp_hdr(skb)->fin = 0;
+	tp->rcv_nxt += skb->len;
+
+	__skb_queue_tail(&sk->sk_receive_queue, skb);
+
+	if (!sock_flag(sk, SOCK_DEAD)) {
+		check_sk_callbacks(csk);
+		sk->sk_data_ready(sk);
+	}
+}
+
+static int chtls_rx_data(struct chtls_dev *cdev, struct sk_buff *skb)
+{
+	struct cpl_rx_data *req = cplhdr(skb) + RSS_HDR;
+	unsigned int hwtid = GET_TID(req);
+	struct sock *sk;
+
+	sk = lookup_tid(cdev->tids, hwtid);
+	if (unlikely(!sk)) {
+		pr_err("can't find conn. for hwtid %u.\n", hwtid);
+		return -EINVAL;
+	}
+	skb_dst_set(skb, NULL);
+	process_cpl_msg(chtls_recv_data, sk, skb);
+	return 0;
+}
+
+static void chtls_recv_pdu(struct sock *sk, struct sk_buff *skb)
+{
+	struct cpl_tls_data *hdr = cplhdr(skb);
+	struct chtls_sock *csk;
+	struct chtls_hws *tlsk;
+	struct tcp_sock *tp;
+
+	csk = rcu_dereference_sk_user_data(sk);
+	tlsk = &csk->tlshws;
+	tp = tcp_sk(sk);
+
+	if (unlikely(sk->sk_shutdown & RCV_SHUTDOWN)) {
+		handle_excess_rx(sk, skb);
+		return;
+	}
+
+	ULP_SKB_CB(skb)->seq = ntohl(hdr->seq);
+	ULP_SKB_CB(skb)->flags = 0;
+	skb_ulp_mode(skb) = ULP_MODE_TLS;
+
+	skb_reset_transport_header(skb);
+	__skb_pull(skb, sizeof(*hdr));
+	if (!skb->data_len)
+		__skb_trim(skb,
+			   CPL_TLS_DATA_LENGTH_G(ntohl(hdr->length_pkd)));
+
+	if (unlikely(tp->urg_data == TCP_URG_NOTYET && tp->urg_seq -
+		     tp->rcv_nxt < skb->len))
+		tp->urg_data = TCP_URG_VALID |
+			       skb->data[tp->urg_seq - tp->rcv_nxt];
+
+	tcp_hdr(skb)->fin = 0;
+	tlsk->pldlen = CPL_TLS_DATA_LENGTH_G(ntohl(hdr->length_pkd));
+	__skb_queue_tail(&tlsk->sk_recv_queue, skb);
+}
+
+static int chtls_rx_pdu(struct chtls_dev *cdev, struct sk_buff *skb)
+{
+	struct cpl_tls_data *req = cplhdr(skb);
+	unsigned int hwtid = GET_TID(req);
+	struct sock *sk;
+
+	sk = lookup_tid(cdev->tids, hwtid);
+	if (unlikely(!sk)) {
+		pr_err("can't find conn. for hwtid %u.\n", hwtid);
+		return -EINVAL;
+	}
+	skb_dst_set(skb, NULL);
+	process_cpl_msg(chtls_recv_pdu, sk, skb);
+	return 0;
+}
+
+static void chtls_set_hdrlen(struct sk_buff *skb, unsigned int nlen)
+{
+	struct tlsrx_cmp_hdr *tls_cmp_hdr = cplhdr(skb);
+
+	skb->hdr_len = ntohs((__force __be16)tls_cmp_hdr->length);
+	tls_cmp_hdr->length = ntohs((__force __be16)nlen);
+}
+
+static void chtls_rx_hdr(struct sock *sk, struct sk_buff *skb)
+{
+	struct tlsrx_cmp_hdr *tls_hdr_pkt;
+	struct cpl_rx_tls_cmp *cmp_cpl;
+	struct sk_buff *skb_rec;
+	struct chtls_sock *csk;
+	struct chtls_hws *tlsk;
+	struct tcp_sock *tp;
+
+	cmp_cpl = cplhdr(skb);
+	csk = rcu_dereference_sk_user_data(sk);
+	tlsk = &csk->tlshws;
+	tp = tcp_sk(sk);
+
+	ULP_SKB_CB(skb)->seq = ntohl(cmp_cpl->seq);
+	ULP_SKB_CB(skb)->flags = 0;
+
+	skb_reset_transport_header(skb);
+	__skb_pull(skb, sizeof(*cmp_cpl));
+	tls_hdr_pkt = (struct tlsrx_cmp_hdr *)skb->data;
+	if (tls_hdr_pkt->res_to_mac_error & TLSRX_HDR_PKT_ERROR_M)
+		tls_hdr_pkt->type = CONTENT_TYPE_ERROR;
+	if (!skb->data_len)
+		__skb_trim(skb, TLS_HEADER_LENGTH);
+
+	tp->rcv_nxt +=
+		CPL_RX_TLS_CMP_PDULENGTH_G(ntohl(cmp_cpl->pdulength_length));
+
+	ULP_SKB_CB(skb)->flags |= ULPCB_FLAG_TLS_HDR;
+	skb_rec = __skb_dequeue(&tlsk->sk_recv_queue);
+	if (!skb_rec) {
+		__skb_queue_tail(&sk->sk_receive_queue, skb);
+	} else {
+		chtls_set_hdrlen(skb, tlsk->pldlen);
+		tlsk->pldlen = 0;
+		__skb_queue_tail(&sk->sk_receive_queue, skb);
+		__skb_queue_tail(&sk->sk_receive_queue, skb_rec);
+	}
+
+	if (!sock_flag(sk, SOCK_DEAD)) {
+		check_sk_callbacks(csk);
+		sk->sk_data_ready(sk);
+	}
+}
+
+static int chtls_rx_cmp(struct chtls_dev *cdev, struct sk_buff *skb)
+{
+	struct cpl_rx_tls_cmp *req = cplhdr(skb);
+	unsigned int hwtid = GET_TID(req);
+	struct sock *sk;
+
+	sk = lookup_tid(cdev->tids, hwtid);
+	if (unlikely(!sk)) {
+		pr_err("can't find conn. for hwtid %u.\n", hwtid);
+		return -EINVAL;
+	}
+	skb_dst_set(skb, NULL);
+	process_cpl_msg(chtls_rx_hdr, sk, skb);
+
+	return 0;
+}
+
+static void chtls_timewait(struct sock *sk)
+{
+	struct tcp_sock *tp = tcp_sk(sk);
+
+	tp->rcv_nxt++;
+	tp->rx_opt.ts_recent_stamp = ktime_get_seconds();
+	tp->srtt_us = 0;
+	tcp_time_wait(sk, TCP_TIME_WAIT, 0);
+}
+
+static void chtls_peer_close(struct sock *sk, struct sk_buff *skb)
+{
+	struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
+
+	if (csk_flag_nochk(csk, CSK_ABORT_RPL_PENDING))
+		goto out;
+
+	sk->sk_shutdown |= RCV_SHUTDOWN;
+	sock_set_flag(sk, SOCK_DONE);
+
+	switch (sk->sk_state) {
+	case TCP_SYN_RECV:
+	case TCP_ESTABLISHED:
+		tcp_set_state(sk, TCP_CLOSE_WAIT);
+		break;
+	case TCP_FIN_WAIT1:
+		tcp_set_state(sk, TCP_CLOSING);
+		break;
+	case TCP_FIN_WAIT2:
+		chtls_release_resources(sk);
+		if (csk_flag_nochk(csk, CSK_ABORT_RPL_PENDING))
+			chtls_conn_done(sk);
+		else
+			chtls_timewait(sk);
+		break;
+	default:
+		pr_info("cpl_peer_close in bad state %d\n", sk->sk_state);
+	}
+
+	if (!sock_flag(sk, SOCK_DEAD)) {
+		sk->sk_state_change(sk);
+		/* Do not send POLL_HUP for half duplex close. */
+
+		if ((sk->sk_shutdown & SEND_SHUTDOWN) ||
+		    sk->sk_state == TCP_CLOSE)
+			sk_wake_async(sk, SOCK_WAKE_WAITD, POLL_HUP);
+		else
+			sk_wake_async(sk, SOCK_WAKE_WAITD, POLL_IN);
+	}
+out:
+	kfree_skb(skb);
+}
+
+static void chtls_close_con_rpl(struct sock *sk, struct sk_buff *skb)
+{
+	struct cpl_close_con_rpl *rpl = cplhdr(skb) + RSS_HDR;
+	struct chtls_sock *csk;
+	struct tcp_sock *tp;
+
+	csk = rcu_dereference_sk_user_data(sk);
+
+	if (csk_flag_nochk(csk, CSK_ABORT_RPL_PENDING))
+		goto out;
+
+	tp = tcp_sk(sk);
+
+	tp->snd_una = ntohl(rpl->snd_nxt) - 1;  /* exclude FIN */
+
+	switch (sk->sk_state) {
+	case TCP_CLOSING:
+		chtls_release_resources(sk);
+		if (csk_flag_nochk(csk, CSK_ABORT_RPL_PENDING))
+			chtls_conn_done(sk);
+		else
+			chtls_timewait(sk);
+		break;
+	case TCP_LAST_ACK:
+		chtls_release_resources(sk);
+		chtls_conn_done(sk);
+		break;
+	case TCP_FIN_WAIT1:
+		tcp_set_state(sk, TCP_FIN_WAIT2);
+		sk->sk_shutdown |= SEND_SHUTDOWN;
+
+		if (!sock_flag(sk, SOCK_DEAD))
+			sk->sk_state_change(sk);
+		else if (tcp_sk(sk)->linger2 < 0 &&
+			 !csk_flag_nochk(csk, CSK_ABORT_SHUTDOWN))
+			chtls_abort_conn(sk, skb);
+		else if (csk_flag_nochk(csk, CSK_TX_DATA_SENT))
+			chtls_set_quiesce_ctrl(sk, 0);
+		break;
+	default:
+		pr_info("close_con_rpl in bad state %d\n", sk->sk_state);
+	}
+out:
+	kfree_skb(skb);
+}
+
+static struct sk_buff *get_cpl_skb(struct sk_buff *skb,
+				   size_t len, gfp_t gfp)
+{
+	if (likely(!skb_is_nonlinear(skb) && !skb_cloned(skb))) {
+		WARN_ONCE(skb->len < len, "skb alloc error");
+		__skb_trim(skb, len);
+		skb_get(skb);
+	} else {
+		skb = alloc_skb(len, gfp);
+		if (skb)
+			__skb_put(skb, len);
+	}
+	return skb;
+}
+
+static void set_abort_rpl_wr(struct sk_buff *skb, unsigned int tid,
+			     int cmd)
+{
+	struct cpl_abort_rpl *rpl = cplhdr(skb);
+
+	INIT_TP_WR_CPL(rpl, CPL_ABORT_RPL, tid);
+	rpl->cmd = cmd;
+}
+
+static void send_defer_abort_rpl(struct chtls_dev *cdev, struct sk_buff *skb)
+{
+	struct cpl_abort_req_rss *req = cplhdr(skb);
+	struct sk_buff *reply_skb;
+
+	reply_skb = alloc_skb(sizeof(struct cpl_abort_rpl),
+			      GFP_KERNEL | __GFP_NOFAIL);
+	__skb_put(reply_skb, sizeof(struct cpl_abort_rpl));
+	set_abort_rpl_wr(reply_skb, GET_TID(req),
+			 (req->status & CPL_ABORT_NO_RST));
+	set_wr_txq(reply_skb, CPL_PRIORITY_DATA, req->status >> 1);
+	cxgb4_ofld_send(cdev->lldi->ports[0], reply_skb);
+	kfree_skb(skb);
+}
+
+/*
+ * Add an skb to the deferred skb queue for processing from process context.
+ */
+static void t4_defer_reply(struct sk_buff *skb, struct chtls_dev *cdev,
+			   defer_handler_t handler)
+{
+	DEFERRED_SKB_CB(skb)->handler = handler;
+	spin_lock_bh(&cdev->deferq.lock);
+	__skb_queue_tail(&cdev->deferq, skb);
+	if (skb_queue_len(&cdev->deferq) == 1)
+		schedule_work(&cdev->deferq_task);
+	spin_unlock_bh(&cdev->deferq.lock);
+}
+
+static void chtls_send_abort_rpl(struct sock *sk, struct sk_buff *skb,
+				 struct chtls_dev *cdev,
+				 int status, int queue)
+{
+	struct cpl_abort_req_rss *req = cplhdr(skb) + RSS_HDR;
+	struct sk_buff *reply_skb;
+	struct chtls_sock *csk;
+	unsigned int tid;
+
+	csk = rcu_dereference_sk_user_data(sk);
+	tid = GET_TID(req);
+
+	reply_skb = get_cpl_skb(skb, sizeof(struct cpl_abort_rpl), gfp_any());
+	if (!reply_skb) {
+		req->status = (queue << 1) | status;
+		t4_defer_reply(skb, cdev, send_defer_abort_rpl);
+		return;
+	}
+
+	set_abort_rpl_wr(reply_skb, tid, status);
+	kfree_skb(skb);
+	set_wr_txq(reply_skb, CPL_PRIORITY_DATA, queue);
+	if (csk_conn_inline(csk)) {
+		struct l2t_entry *e = csk->l2t_entry;
+
+		if (e && sk->sk_state != TCP_SYN_RECV) {
+			cxgb4_l2t_send(csk->egress_dev, reply_skb, e);
+			return;
+		}
+	}
+	cxgb4_ofld_send(cdev->lldi->ports[0], reply_skb);
+}
+
+/*
+ * This is run from a listener's backlog to abort a child connection in
+ * SYN_RCV state (i.e., one on the listener's SYN queue).
+ */
+static void bl_abort_syn_rcv(struct sock *lsk, struct sk_buff *skb)
+{
+	struct chtls_sock *csk;
+	struct sock *child;
+	int queue;
+
+	child = skb->sk;
+	csk = rcu_dereference_sk_user_data(child);
+	queue = csk->txq_idx;
+
+	skb->sk	= NULL;
+	chtls_send_abort_rpl(child, skb, BLOG_SKB_CB(skb)->cdev,
+			     CPL_ABORT_NO_RST, queue);
+	do_abort_syn_rcv(child, lsk);
+}
+
+static int abort_syn_rcv(struct sock *sk, struct sk_buff *skb)
+{
+	const struct request_sock *oreq;
+	struct listen_ctx *listen_ctx;
+	struct chtls_sock *csk;
+	struct chtls_dev *cdev;
+	struct sock *psk;
+	void *ctx;
+
+	csk = sk->sk_user_data;
+	oreq = csk->passive_reap_next;
+	cdev = csk->cdev;
+
+	if (!oreq)
+		return -1;
+
+	ctx = lookup_stid(cdev->tids, oreq->ts_recent);
+	if (!ctx)
+		return -1;
+
+	listen_ctx = (struct listen_ctx *)ctx;
+	psk = listen_ctx->lsk;
+
+	bh_lock_sock(psk);
+	if (!sock_owned_by_user(psk)) {
+		int queue = csk->txq_idx;
+
+		chtls_send_abort_rpl(sk, skb, cdev, CPL_ABORT_NO_RST, queue);
+		do_abort_syn_rcv(sk, psk);
+	} else {
+		skb->sk = sk;
+		BLOG_SKB_CB(skb)->backlog_rcv = bl_abort_syn_rcv;
+		__sk_add_backlog(psk, skb);
+	}
+	bh_unlock_sock(psk);
+	return 0;
+}
+
+static void chtls_abort_req_rss(struct sock *sk, struct sk_buff *skb)
+{
+	const struct cpl_abort_req_rss *req = cplhdr(skb) + RSS_HDR;
+	struct chtls_sock *csk = sk->sk_user_data;
+	int rst_status = CPL_ABORT_NO_RST;
+	int queue = csk->txq_idx;
+
+	if (is_neg_adv(req->status)) {
+		kfree_skb(skb);
+		return;
+	}
+
+	csk_reset_flag(csk, CSK_ABORT_REQ_RCVD);
+
+	if (!csk_flag_nochk(csk, CSK_ABORT_SHUTDOWN) &&
+	    !csk_flag_nochk(csk, CSK_TX_DATA_SENT)) {
+		struct tcp_sock *tp = tcp_sk(sk);
+
+		if (send_tx_flowc_wr(sk, 0, tp->snd_nxt, tp->rcv_nxt) < 0)
+			WARN_ONCE(1, "send_tx_flowc error");
+		csk_set_flag(csk, CSK_TX_DATA_SENT);
+	}
+
+	csk_set_flag(csk, CSK_ABORT_SHUTDOWN);
+
+	if (!csk_flag_nochk(csk, CSK_ABORT_RPL_PENDING)) {
+		sk->sk_err = ETIMEDOUT;
+
+		if (!sock_flag(sk, SOCK_DEAD))
+			sk_error_report(sk);
+
+		if (sk->sk_state == TCP_SYN_RECV && !abort_syn_rcv(sk, skb))
+			return;
+
+	}
+
+	chtls_send_abort_rpl(sk, skb, BLOG_SKB_CB(skb)->cdev,
+			     rst_status, queue);
+	chtls_release_resources(sk);
+	chtls_conn_done(sk);
+}
+
+static void chtls_abort_rpl_rss(struct sock *sk, struct sk_buff *skb)
+{
+	struct cpl_abort_rpl_rss *rpl = cplhdr(skb) + RSS_HDR;
+	struct chtls_sock *csk;
+	struct chtls_dev *cdev;
+
+	csk = rcu_dereference_sk_user_data(sk);
+	cdev = csk->cdev;
+
+	if (csk_flag_nochk(csk, CSK_ABORT_RPL_PENDING)) {
+		csk_reset_flag(csk, CSK_ABORT_RPL_PENDING);
+		if (!csk_flag_nochk(csk, CSK_ABORT_REQ_RCVD)) {
+			if (sk->sk_state == TCP_SYN_SENT) {
+				cxgb4_remove_tid(cdev->tids,
+						 csk->port_id,
+						 GET_TID(rpl),
+						 sk->sk_family);
+				sock_put(sk);
+			}
+			chtls_release_resources(sk);
+			chtls_conn_done(sk);
+		}
+	}
+	kfree_skb(skb);
+}
+
+static int chtls_conn_cpl(struct chtls_dev *cdev, struct sk_buff *skb)
+{
+	struct cpl_peer_close *req = cplhdr(skb) + RSS_HDR;
+	void (*fn)(struct sock *sk, struct sk_buff *skb);
+	unsigned int hwtid = GET_TID(req);
+	struct chtls_sock *csk;
+	struct sock *sk;
+	u8 opcode;
+
+	opcode = ((const struct rss_header *)cplhdr(skb))->opcode;
+
+	sk = lookup_tid(cdev->tids, hwtid);
+	if (!sk)
+		goto rel_skb;
+
+	csk = sk->sk_user_data;
+
+	switch (opcode) {
+	case CPL_PEER_CLOSE:
+		fn = chtls_peer_close;
+		break;
+	case CPL_CLOSE_CON_RPL:
+		fn = chtls_close_con_rpl;
+		break;
+	case CPL_ABORT_REQ_RSS:
+		/*
+		 * Save the offload device in the skb, we may process this
+		 * message after the socket has closed.
+		 */
+		BLOG_SKB_CB(skb)->cdev = csk->cdev;
+		fn = chtls_abort_req_rss;
+		break;
+	case CPL_ABORT_RPL_RSS:
+		fn = chtls_abort_rpl_rss;
+		break;
+	default:
+		goto rel_skb;
+	}
+
+	process_cpl_msg(fn, sk, skb);
+	return 0;
+
+rel_skb:
+	kfree_skb(skb);
+	return 0;
+}
+
+static void chtls_rx_ack(struct sock *sk, struct sk_buff *skb)
+{
+	struct cpl_fw4_ack *hdr = cplhdr(skb) + RSS_HDR;
+	struct chtls_sock *csk = sk->sk_user_data;
+	struct tcp_sock *tp = tcp_sk(sk);
+	u32 credits = hdr->credits;
+	u32 snd_una;
+
+	snd_una = ntohl(hdr->snd_una);
+	csk->wr_credits += credits;
+
+	if (csk->wr_unacked > csk->wr_max_credits - csk->wr_credits)
+		csk->wr_unacked = csk->wr_max_credits - csk->wr_credits;
+
+	while (credits) {
+		struct sk_buff *pskb = csk->wr_skb_head;
+		u32 csum;
+
+		if (unlikely(!pskb)) {
+			if (csk->wr_nondata)
+				csk->wr_nondata -= credits;
+			break;
+		}
+		csum = (__force u32)pskb->csum;
+		if (unlikely(credits < csum)) {
+			pskb->csum = (__force __wsum)(csum - credits);
+			break;
+		}
+		dequeue_wr(sk);
+		credits -= csum;
+		kfree_skb(pskb);
+	}
+	if (hdr->seq_vld & CPL_FW4_ACK_FLAGS_SEQVAL) {
+		if (unlikely(before(snd_una, tp->snd_una))) {
+			kfree_skb(skb);
+			return;
+		}
+
+		if (tp->snd_una != snd_una) {
+			tp->snd_una = snd_una;
+			tp->rcv_tstamp = tcp_jiffies32;
+			if (tp->snd_una == tp->snd_nxt &&
+			    !csk_flag_nochk(csk, CSK_TX_FAILOVER))
+				csk_reset_flag(csk, CSK_TX_WAIT_IDLE);
+		}
+	}
+
+	if (hdr->seq_vld & CPL_FW4_ACK_FLAGS_CH) {
+		unsigned int fclen16 = roundup(failover_flowc_wr_len, 16);
+
+		csk->wr_credits -= fclen16;
+		csk_reset_flag(csk, CSK_TX_WAIT_IDLE);
+		csk_reset_flag(csk, CSK_TX_FAILOVER);
+	}
+	if (skb_queue_len(&csk->txq) && chtls_push_frames(csk, 0))
+		sk->sk_write_space(sk);
+
+	kfree_skb(skb);
+}
+
+static int chtls_wr_ack(struct chtls_dev *cdev, struct sk_buff *skb)
+{
+	struct cpl_fw4_ack *rpl = cplhdr(skb) + RSS_HDR;
+	unsigned int hwtid = GET_TID(rpl);
+	struct sock *sk;
+
+	sk = lookup_tid(cdev->tids, hwtid);
+	if (unlikely(!sk)) {
+		pr_err("can't find conn. for hwtid %u.\n", hwtid);
+		return -EINVAL;
+	}
+	process_cpl_msg(chtls_rx_ack, sk, skb);
+
+	return 0;
+}
+
+static int chtls_set_tcb_rpl(struct chtls_dev *cdev, struct sk_buff *skb)
+{
+	struct cpl_set_tcb_rpl *rpl = cplhdr(skb) + RSS_HDR;
+	unsigned int hwtid = GET_TID(rpl);
+	struct sock *sk;
+
+	sk = lookup_tid(cdev->tids, hwtid);
+
+	/* return EINVAL if socket doesn't exist */
+	if (!sk)
+		return -EINVAL;
+
+	/* Reusing the skb as size of cpl_set_tcb_field structure
+	 * is greater than cpl_abort_req
+	 */
+	if (TCB_COOKIE_G(rpl->cookie) == TCB_FIELD_COOKIE_TFLAG)
+		chtls_send_abort(sk, CPL_ABORT_SEND_RST, NULL);
+
+	kfree_skb(skb);
+	return 0;
+}
+
+chtls_handler_func chtls_handlers[NUM_CPL_CMDS] = {
+	[CPL_PASS_OPEN_RPL]     = chtls_pass_open_rpl,
+	[CPL_CLOSE_LISTSRV_RPL] = chtls_close_listsrv_rpl,
+	[CPL_PASS_ACCEPT_REQ]   = chtls_pass_accept_req,
+	[CPL_PASS_ESTABLISH]    = chtls_pass_establish,
+	[CPL_RX_DATA]           = chtls_rx_data,
+	[CPL_TLS_DATA]          = chtls_rx_pdu,
+	[CPL_RX_TLS_CMP]        = chtls_rx_cmp,
+	[CPL_PEER_CLOSE]        = chtls_conn_cpl,
+	[CPL_CLOSE_CON_RPL]     = chtls_conn_cpl,
+	[CPL_ABORT_REQ_RSS]     = chtls_conn_cpl,
+	[CPL_ABORT_RPL_RSS]     = chtls_conn_cpl,
+	[CPL_FW4_ACK]		= chtls_wr_ack,
+	[CPL_SET_TCB_RPL]	= chtls_set_tcb_rpl,
+};
diff --git a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.h b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.h
new file mode 100644
index 000000000..f61ca6576
--- /dev/null
+++ b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.h
@@ -0,0 +1,219 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2018 Chelsio Communications, Inc.
+ */
+
+#ifndef __CHTLS_CM_H__
+#define __CHTLS_CM_H__
+
+/*
+ * TCB settings
+ */
+/* 3:0 */
+#define TCB_ULP_TYPE_W    0
+#define TCB_ULP_TYPE_S    0
+#define TCB_ULP_TYPE_M    0xfULL
+#define TCB_ULP_TYPE_V(x) ((x) << TCB_ULP_TYPE_S)
+
+/* 11:4 */
+#define TCB_ULP_RAW_W    0
+#define TCB_ULP_RAW_S    4
+#define TCB_ULP_RAW_M    0xffULL
+#define TCB_ULP_RAW_V(x) ((x) << TCB_ULP_RAW_S)
+
+#define TF_TLS_KEY_SIZE_S    7
+#define TF_TLS_KEY_SIZE_V(x) ((x) << TF_TLS_KEY_SIZE_S)
+
+#define TF_TLS_CONTROL_S     2
+#define TF_TLS_CONTROL_V(x) ((x) << TF_TLS_CONTROL_S)
+
+#define TF_TLS_ACTIVE_S      1
+#define TF_TLS_ACTIVE_V(x) ((x) << TF_TLS_ACTIVE_S)
+
+#define TF_TLS_ENABLE_S      0
+#define TF_TLS_ENABLE_V(x) ((x) << TF_TLS_ENABLE_S)
+
+#define TF_RX_QUIESCE_S    15
+#define TF_RX_QUIESCE_V(x) ((x) << TF_RX_QUIESCE_S)
+
+/*
+ * Max receive window supported by HW in bytes.  Only a small part of it can
+ * be set through option0, the rest needs to be set through RX_DATA_ACK.
+ */
+#define MAX_RCV_WND ((1U << 27) - 1)
+#define MAX_MSS     65536
+
+/*
+ * Min receive window.  We want it to be large enough to accommodate receive
+ * coalescing, handle jumbo frames, and not trigger sender SWS avoidance.
+ */
+#define MIN_RCV_WND (24 * 1024U)
+#define LOOPBACK(x)     (((x) & htonl(0xff000000)) == htonl(0x7f000000))
+
+/* for TX: a skb must have a headroom of at least TX_HEADER_LEN bytes */
+#define TX_HEADER_LEN \
+	(sizeof(struct fw_ofld_tx_data_wr) + sizeof(struct sge_opaque_hdr))
+#define TX_TLSHDR_LEN \
+	(sizeof(struct fw_tlstx_data_wr) + sizeof(struct cpl_tx_tls_sfo) + \
+	 sizeof(struct sge_opaque_hdr))
+#define TXDATA_SKB_LEN 128
+
+enum {
+	CPL_TX_TLS_SFO_TYPE_CCS,
+	CPL_TX_TLS_SFO_TYPE_ALERT,
+	CPL_TX_TLS_SFO_TYPE_HANDSHAKE,
+	CPL_TX_TLS_SFO_TYPE_DATA,
+	CPL_TX_TLS_SFO_TYPE_HEARTBEAT,
+};
+
+enum {
+	TLS_HDR_TYPE_CCS = 20,
+	TLS_HDR_TYPE_ALERT,
+	TLS_HDR_TYPE_HANDSHAKE,
+	TLS_HDR_TYPE_RECORD,
+	TLS_HDR_TYPE_HEARTBEAT,
+};
+
+typedef void (*defer_handler_t)(struct chtls_dev *dev, struct sk_buff *skb);
+extern struct request_sock_ops chtls_rsk_ops;
+extern struct request_sock_ops chtls_rsk_opsv6;
+
+struct deferred_skb_cb {
+	defer_handler_t handler;
+	struct chtls_dev *dev;
+};
+
+#define DEFERRED_SKB_CB(skb) ((struct deferred_skb_cb *)(skb)->cb)
+#define failover_flowc_wr_len offsetof(struct fw_flowc_wr, mnemval[3])
+#define WR_SKB_CB(skb) ((struct wr_skb_cb *)(skb)->cb)
+#define ACCEPT_QUEUE(sk) (&inet_csk(sk)->icsk_accept_queue.rskq_accept_head)
+
+#define SND_WSCALE(tp) ((tp)->rx_opt.snd_wscale)
+#define RCV_WSCALE(tp) ((tp)->rx_opt.rcv_wscale)
+#define USER_MSS(tp) ((tp)->rx_opt.user_mss)
+#define TS_RECENT_STAMP(tp) ((tp)->rx_opt.ts_recent_stamp)
+#define WSCALE_OK(tp) ((tp)->rx_opt.wscale_ok)
+#define TSTAMP_OK(tp) ((tp)->rx_opt.tstamp_ok)
+#define SACK_OK(tp) ((tp)->rx_opt.sack_ok)
+#define INC_ORPHAN_COUNT(sk) this_cpu_inc(*(sk)->sk_prot->orphan_count)
+
+/* TLS SKB */
+#define skb_ulp_tls_inline(skb)      (ULP_SKB_CB(skb)->ulp.tls.ofld)
+#define skb_ulp_tls_iv_imm(skb)      (ULP_SKB_CB(skb)->ulp.tls.iv)
+
+void chtls_defer_reply(struct sk_buff *skb, struct chtls_dev *dev,
+		       defer_handler_t handler);
+
+/*
+ * Returns true if the socket is in one of the supplied states.
+ */
+static inline unsigned int sk_in_state(const struct sock *sk,
+				       unsigned int states)
+{
+	return states & (1 << sk->sk_state);
+}
+
+static void chtls_rsk_destructor(struct request_sock *req)
+{
+	/* do nothing */
+}
+
+static inline void chtls_init_rsk_ops(struct proto *chtls_tcp_prot,
+				      struct request_sock_ops *chtls_tcp_ops,
+				      struct proto *tcp_prot, int family)
+{
+	memset(chtls_tcp_ops, 0, sizeof(*chtls_tcp_ops));
+	chtls_tcp_ops->family = family;
+	chtls_tcp_ops->obj_size = sizeof(struct tcp_request_sock);
+	chtls_tcp_ops->destructor = chtls_rsk_destructor;
+	chtls_tcp_ops->slab = tcp_prot->rsk_prot->slab;
+	chtls_tcp_prot->rsk_prot = chtls_tcp_ops;
+}
+
+static inline void chtls_reqsk_free(struct request_sock *req)
+{
+	if (req->rsk_listener)
+		sock_put(req->rsk_listener);
+	kmem_cache_free(req->rsk_ops->slab, req);
+}
+
+#define DECLARE_TASK_FUNC(task, task_param) \
+		static void task(struct work_struct *task_param)
+
+static inline void sk_wakeup_sleepers(struct sock *sk, bool interruptable)
+{
+	struct socket_wq *wq;
+
+	rcu_read_lock();
+	wq = rcu_dereference(sk->sk_wq);
+	if (skwq_has_sleeper(wq)) {
+		if (interruptable)
+			wake_up_interruptible(sk_sleep(sk));
+		else
+			wake_up_all(sk_sleep(sk));
+	}
+	rcu_read_unlock();
+}
+
+static inline void chtls_set_req_port(struct request_sock *oreq,
+				      __be16 source, __be16 dest)
+{
+	inet_rsk(oreq)->ir_rmt_port = source;
+	inet_rsk(oreq)->ir_num = ntohs(dest);
+}
+
+static inline void chtls_set_req_addr(struct request_sock *oreq,
+				      __be32 local_ip, __be32 peer_ip)
+{
+	inet_rsk(oreq)->ir_loc_addr = local_ip;
+	inet_rsk(oreq)->ir_rmt_addr = peer_ip;
+}
+
+static inline void chtls_free_skb(struct sock *sk, struct sk_buff *skb)
+{
+	skb_dst_set(skb, NULL);
+	__skb_unlink(skb, &sk->sk_receive_queue);
+	__kfree_skb(skb);
+}
+
+static inline void chtls_kfree_skb(struct sock *sk, struct sk_buff *skb)
+{
+	skb_dst_set(skb, NULL);
+	__skb_unlink(skb, &sk->sk_receive_queue);
+	kfree_skb(skb);
+}
+
+static inline void chtls_reset_wr_list(struct chtls_sock *csk)
+{
+	csk->wr_skb_head = NULL;
+	csk->wr_skb_tail = NULL;
+}
+
+static inline void enqueue_wr(struct chtls_sock *csk, struct sk_buff *skb)
+{
+	WR_SKB_CB(skb)->next_wr = NULL;
+
+	skb_get(skb);
+
+	if (!csk->wr_skb_head)
+		csk->wr_skb_head = skb;
+	else
+		WR_SKB_CB(csk->wr_skb_tail)->next_wr = skb;
+	csk->wr_skb_tail = skb;
+}
+
+static inline struct sk_buff *dequeue_wr(struct sock *sk)
+{
+	struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
+	struct sk_buff *skb = NULL;
+
+	skb = csk->wr_skb_head;
+
+	if (likely(skb)) {
+	 /* Don't bother clearing the tail */
+		csk->wr_skb_head = WR_SKB_CB(skb)->next_wr;
+		WR_SKB_CB(skb)->next_wr = NULL;
+	}
+	return skb;
+}
+#endif
diff --git a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_hw.c b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_hw.c
new file mode 100644
index 000000000..1e67140b0
--- /dev/null
+++ b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_hw.c
@@ -0,0 +1,471 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2018 Chelsio Communications, Inc.
+ *
+ * Written by: Atul Gupta (atul.gupta@chelsio.com)
+ */
+
+#include <linux/module.h>
+#include <linux/list.h>
+#include <linux/workqueue.h>
+#include <linux/skbuff.h>
+#include <linux/timer.h>
+#include <linux/notifier.h>
+#include <linux/inetdevice.h>
+#include <linux/ip.h>
+#include <linux/tcp.h>
+#include <linux/tls.h>
+#include <net/tls.h>
+
+#include "chtls.h"
+#include "chtls_cm.h"
+
+static void __set_tcb_field_direct(struct chtls_sock *csk,
+				   struct cpl_set_tcb_field *req, u16 word,
+				   u64 mask, u64 val, u8 cookie, int no_reply)
+{
+	struct ulptx_idata *sc;
+
+	INIT_TP_WR_CPL(req, CPL_SET_TCB_FIELD, csk->tid);
+	req->wr.wr_mid |= htonl(FW_WR_FLOWID_V(csk->tid));
+	req->reply_ctrl = htons(NO_REPLY_V(no_reply) |
+				QUEUENO_V(csk->rss_qid));
+	req->word_cookie = htons(TCB_WORD_V(word) | TCB_COOKIE_V(cookie));
+	req->mask = cpu_to_be64(mask);
+	req->val = cpu_to_be64(val);
+	sc = (struct ulptx_idata *)(req + 1);
+	sc->cmd_more = htonl(ULPTX_CMD_V(ULP_TX_SC_NOOP));
+	sc->len = htonl(0);
+}
+
+static void __set_tcb_field(struct sock *sk, struct sk_buff *skb, u16 word,
+			    u64 mask, u64 val, u8 cookie, int no_reply)
+{
+	struct cpl_set_tcb_field *req;
+	struct chtls_sock *csk;
+	struct ulptx_idata *sc;
+	unsigned int wrlen;
+
+	wrlen = roundup(sizeof(*req) + sizeof(*sc), 16);
+	csk = rcu_dereference_sk_user_data(sk);
+
+	req = (struct cpl_set_tcb_field *)__skb_put(skb, wrlen);
+	__set_tcb_field_direct(csk, req, word, mask, val, cookie, no_reply);
+	set_wr_txq(skb, CPL_PRIORITY_CONTROL, csk->port_id);
+}
+
+/*
+ * Send control message to HW, message go as immediate data and packet
+ * is freed immediately.
+ */
+static int chtls_set_tcb_field(struct sock *sk, u16 word, u64 mask, u64 val)
+{
+	struct cpl_set_tcb_field *req;
+	unsigned int credits_needed;
+	struct chtls_sock *csk;
+	struct ulptx_idata *sc;
+	struct sk_buff *skb;
+	unsigned int wrlen;
+	int ret;
+
+	wrlen = roundup(sizeof(*req) + sizeof(*sc), 16);
+
+	skb = alloc_skb(wrlen, GFP_ATOMIC);
+	if (!skb)
+		return -ENOMEM;
+
+	credits_needed = DIV_ROUND_UP(wrlen, 16);
+	csk = rcu_dereference_sk_user_data(sk);
+
+	__set_tcb_field(sk, skb, word, mask, val, 0, 1);
+	skb_set_queue_mapping(skb, (csk->txq_idx << 1) | CPL_PRIORITY_DATA);
+	csk->wr_credits -= credits_needed;
+	csk->wr_unacked += credits_needed;
+	enqueue_wr(csk, skb);
+	ret = cxgb4_ofld_send(csk->egress_dev, skb);
+	if (ret < 0)
+		kfree_skb(skb);
+	return ret < 0 ? ret : 0;
+}
+
+void chtls_set_tcb_field_rpl_skb(struct sock *sk, u16 word,
+				 u64 mask, u64 val, u8 cookie,
+				 int through_l2t)
+{
+	struct sk_buff *skb;
+	unsigned int wrlen;
+
+	wrlen = sizeof(struct cpl_set_tcb_field) + sizeof(struct ulptx_idata);
+	wrlen = roundup(wrlen, 16);
+
+	skb = alloc_skb(wrlen, GFP_KERNEL | __GFP_NOFAIL);
+	if (!skb)
+		return;
+
+	__set_tcb_field(sk, skb, word, mask, val, cookie, 0);
+	send_or_defer(sk, tcp_sk(sk), skb, through_l2t);
+}
+
+/*
+ * Set one of the t_flags bits in the TCB.
+ */
+int chtls_set_tcb_tflag(struct sock *sk, unsigned int bit_pos, int val)
+{
+	return chtls_set_tcb_field(sk, 1, 1ULL << bit_pos,
+				   (u64)val << bit_pos);
+}
+
+static int chtls_set_tcb_keyid(struct sock *sk, int keyid)
+{
+	return chtls_set_tcb_field(sk, 31, 0xFFFFFFFFULL, keyid);
+}
+
+static int chtls_set_tcb_seqno(struct sock *sk)
+{
+	return chtls_set_tcb_field(sk, 28, ~0ULL, 0);
+}
+
+static int chtls_set_tcb_quiesce(struct sock *sk, int val)
+{
+	return chtls_set_tcb_field(sk, 1, (1ULL << TF_RX_QUIESCE_S),
+				   TF_RX_QUIESCE_V(val));
+}
+
+void chtls_set_quiesce_ctrl(struct sock *sk, int val)
+{
+	struct chtls_sock *csk;
+	struct sk_buff *skb;
+	unsigned int wrlen;
+	int ret;
+
+	wrlen = sizeof(struct cpl_set_tcb_field) + sizeof(struct ulptx_idata);
+	wrlen = roundup(wrlen, 16);
+
+	skb = alloc_skb(wrlen, GFP_ATOMIC);
+	if (!skb)
+		return;
+
+	csk = rcu_dereference_sk_user_data(sk);
+
+	__set_tcb_field(sk, skb, 1, TF_RX_QUIESCE_V(1), 0, 0, 1);
+	set_wr_txq(skb, CPL_PRIORITY_CONTROL, csk->port_id);
+	ret = cxgb4_ofld_send(csk->egress_dev, skb);
+	if (ret < 0)
+		kfree_skb(skb);
+}
+
+/* TLS Key bitmap processing */
+int chtls_init_kmap(struct chtls_dev *cdev, struct cxgb4_lld_info *lldi)
+{
+	unsigned int num_key_ctx, bsize;
+	int ksize;
+
+	num_key_ctx = (lldi->vr->key.size / TLS_KEY_CONTEXT_SZ);
+	bsize = BITS_TO_LONGS(num_key_ctx);
+
+	cdev->kmap.size = num_key_ctx;
+	cdev->kmap.available = bsize;
+	ksize = sizeof(*cdev->kmap.addr) * bsize;
+	cdev->kmap.addr = kvzalloc(ksize, GFP_KERNEL);
+	if (!cdev->kmap.addr)
+		return -ENOMEM;
+
+	cdev->kmap.start = lldi->vr->key.start;
+	spin_lock_init(&cdev->kmap.lock);
+	return 0;
+}
+
+static int get_new_keyid(struct chtls_sock *csk, u32 optname)
+{
+	struct net_device *dev = csk->egress_dev;
+	struct chtls_dev *cdev = csk->cdev;
+	struct chtls_hws *hws;
+	struct adapter *adap;
+	int keyid;
+
+	adap = netdev2adap(dev);
+	hws = &csk->tlshws;
+
+	spin_lock_bh(&cdev->kmap.lock);
+	keyid = find_first_zero_bit(cdev->kmap.addr, cdev->kmap.size);
+	if (keyid < cdev->kmap.size) {
+		__set_bit(keyid, cdev->kmap.addr);
+		if (optname == TLS_RX)
+			hws->rxkey = keyid;
+		else
+			hws->txkey = keyid;
+		atomic_inc(&adap->chcr_stats.tls_key);
+	} else {
+		keyid = -1;
+	}
+	spin_unlock_bh(&cdev->kmap.lock);
+	return keyid;
+}
+
+void free_tls_keyid(struct sock *sk)
+{
+	struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
+	struct net_device *dev = csk->egress_dev;
+	struct chtls_dev *cdev = csk->cdev;
+	struct chtls_hws *hws;
+	struct adapter *adap;
+
+	if (!cdev->kmap.addr)
+		return;
+
+	adap = netdev2adap(dev);
+	hws = &csk->tlshws;
+
+	spin_lock_bh(&cdev->kmap.lock);
+	if (hws->rxkey >= 0) {
+		__clear_bit(hws->rxkey, cdev->kmap.addr);
+		atomic_dec(&adap->chcr_stats.tls_key);
+		hws->rxkey = -1;
+	}
+	if (hws->txkey >= 0) {
+		__clear_bit(hws->txkey, cdev->kmap.addr);
+		atomic_dec(&adap->chcr_stats.tls_key);
+		hws->txkey = -1;
+	}
+	spin_unlock_bh(&cdev->kmap.lock);
+}
+
+unsigned int keyid_to_addr(int start_addr, int keyid)
+{
+	return (start_addr + (keyid * TLS_KEY_CONTEXT_SZ)) >> 5;
+}
+
+static void chtls_rxkey_ivauth(struct _key_ctx *kctx)
+{
+	kctx->iv_to_auth = cpu_to_be64(KEYCTX_TX_WR_IV_V(6ULL) |
+				  KEYCTX_TX_WR_AAD_V(1ULL) |
+				  KEYCTX_TX_WR_AADST_V(5ULL) |
+				  KEYCTX_TX_WR_CIPHER_V(14ULL) |
+				  KEYCTX_TX_WR_CIPHERST_V(0ULL) |
+				  KEYCTX_TX_WR_AUTH_V(14ULL) |
+				  KEYCTX_TX_WR_AUTHST_V(16ULL) |
+				  KEYCTX_TX_WR_AUTHIN_V(16ULL));
+}
+
+static int chtls_key_info(struct chtls_sock *csk,
+			  struct _key_ctx *kctx,
+			  u32 keylen, u32 optname,
+			  int cipher_type)
+{
+	unsigned char key[AES_MAX_KEY_SIZE];
+	unsigned char *key_p, *salt;
+	unsigned char ghash_h[AEAD_H_SIZE];
+	int ck_size, key_ctx_size, kctx_mackey_size, salt_size;
+	struct crypto_aes_ctx aes;
+	int ret;
+
+	key_ctx_size = sizeof(struct _key_ctx) +
+		       roundup(keylen, 16) + AEAD_H_SIZE;
+
+	/* GCM mode of AES supports 128 and 256 bit encryption, so
+	 * prepare key context base on GCM cipher type
+	 */
+	switch (cipher_type) {
+	case TLS_CIPHER_AES_GCM_128: {
+		struct tls12_crypto_info_aes_gcm_128 *gcm_ctx_128 =
+			(struct tls12_crypto_info_aes_gcm_128 *)
+					&csk->tlshws.crypto_info;
+		memcpy(key, gcm_ctx_128->key, keylen);
+
+		key_p            = gcm_ctx_128->key;
+		salt             = gcm_ctx_128->salt;
+		ck_size          = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
+		salt_size        = TLS_CIPHER_AES_GCM_128_SALT_SIZE;
+		kctx_mackey_size = CHCR_KEYCTX_MAC_KEY_SIZE_128;
+		break;
+	}
+	case TLS_CIPHER_AES_GCM_256: {
+		struct tls12_crypto_info_aes_gcm_256 *gcm_ctx_256 =
+			(struct tls12_crypto_info_aes_gcm_256 *)
+					&csk->tlshws.crypto_info;
+		memcpy(key, gcm_ctx_256->key, keylen);
+
+		key_p            = gcm_ctx_256->key;
+		salt             = gcm_ctx_256->salt;
+		ck_size          = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
+		salt_size        = TLS_CIPHER_AES_GCM_256_SALT_SIZE;
+		kctx_mackey_size = CHCR_KEYCTX_MAC_KEY_SIZE_256;
+		break;
+	}
+	default:
+		pr_err("GCM: Invalid key length %d\n", keylen);
+		return -EINVAL;
+	}
+
+	/* Calculate the H = CIPH(K, 0 repeated 16 times).
+	 * It will go in key context
+	 */
+	ret = aes_expandkey(&aes, key, keylen);
+	if (ret)
+		return ret;
+
+	memset(ghash_h, 0, AEAD_H_SIZE);
+	aes_encrypt(&aes, ghash_h, ghash_h);
+	memzero_explicit(&aes, sizeof(aes));
+	csk->tlshws.keylen = key_ctx_size;
+
+	/* Copy the Key context */
+	if (optname == TLS_RX) {
+		int key_ctx;
+
+		key_ctx = ((key_ctx_size >> 4) << 3);
+		kctx->ctx_hdr = FILL_KEY_CRX_HDR(ck_size,
+						 kctx_mackey_size,
+						 0, 0, key_ctx);
+		chtls_rxkey_ivauth(kctx);
+	} else {
+		kctx->ctx_hdr = FILL_KEY_CTX_HDR(ck_size,
+						 kctx_mackey_size,
+						 0, 0, key_ctx_size >> 4);
+	}
+
+	memcpy(kctx->salt, salt, salt_size);
+	memcpy(kctx->key, key_p, keylen);
+	memcpy(kctx->key + keylen, ghash_h, AEAD_H_SIZE);
+	/* erase key info from driver */
+	memset(key_p, 0, keylen);
+
+	return 0;
+}
+
+static void chtls_set_scmd(struct chtls_sock *csk)
+{
+	struct chtls_hws *hws = &csk->tlshws;
+
+	hws->scmd.seqno_numivs =
+		SCMD_SEQ_NO_CTRL_V(3) |
+		SCMD_PROTO_VERSION_V(0) |
+		SCMD_ENC_DEC_CTRL_V(0) |
+		SCMD_CIPH_AUTH_SEQ_CTRL_V(1) |
+		SCMD_CIPH_MODE_V(2) |
+		SCMD_AUTH_MODE_V(4) |
+		SCMD_HMAC_CTRL_V(0) |
+		SCMD_IV_SIZE_V(4) |
+		SCMD_NUM_IVS_V(1);
+
+	hws->scmd.ivgen_hdrlen =
+		SCMD_IV_GEN_CTRL_V(1) |
+		SCMD_KEY_CTX_INLINE_V(0) |
+		SCMD_TLS_FRAG_ENABLE_V(1);
+}
+
+int chtls_setkey(struct chtls_sock *csk, u32 keylen,
+		 u32 optname, int cipher_type)
+{
+	struct tls_key_req *kwr;
+	struct chtls_dev *cdev;
+	struct _key_ctx *kctx;
+	int wrlen, klen, len;
+	struct sk_buff *skb;
+	struct sock *sk;
+	int keyid;
+	int kaddr;
+	int ret;
+
+	cdev = csk->cdev;
+	sk = csk->sk;
+
+	klen = roundup((keylen + AEAD_H_SIZE) + sizeof(*kctx), 32);
+	wrlen = roundup(sizeof(*kwr), 16);
+	len = klen + wrlen;
+
+	/* Flush out-standing data before new key takes effect */
+	if (optname == TLS_TX) {
+		lock_sock(sk);
+		if (skb_queue_len(&csk->txq))
+			chtls_push_frames(csk, 0);
+		release_sock(sk);
+	}
+
+	skb = alloc_skb(len, GFP_KERNEL);
+	if (!skb)
+		return -ENOMEM;
+
+	keyid = get_new_keyid(csk, optname);
+	if (keyid < 0) {
+		ret = -ENOSPC;
+		goto out_nokey;
+	}
+
+	kaddr = keyid_to_addr(cdev->kmap.start, keyid);
+	kwr = (struct tls_key_req *)__skb_put_zero(skb, len);
+	kwr->wr.op_to_compl =
+		cpu_to_be32(FW_WR_OP_V(FW_ULPTX_WR) | FW_WR_COMPL_F |
+		      FW_WR_ATOMIC_V(1U));
+	kwr->wr.flowid_len16 =
+		cpu_to_be32(FW_WR_LEN16_V(DIV_ROUND_UP(len, 16) |
+			    FW_WR_FLOWID_V(csk->tid)));
+	kwr->wr.protocol = 0;
+	kwr->wr.mfs = htons(TLS_MFS);
+	kwr->wr.reneg_to_write_rx = optname;
+
+	/* ulptx command */
+	kwr->req.cmd = cpu_to_be32(ULPTX_CMD_V(ULP_TX_MEM_WRITE) |
+			    T5_ULP_MEMIO_ORDER_V(1) |
+			    T5_ULP_MEMIO_IMM_V(1));
+	kwr->req.len16 = cpu_to_be32((csk->tid << 8) |
+			      DIV_ROUND_UP(len - sizeof(kwr->wr), 16));
+	kwr->req.dlen = cpu_to_be32(ULP_MEMIO_DATA_LEN_V(klen >> 5));
+	kwr->req.lock_addr = cpu_to_be32(ULP_MEMIO_ADDR_V(kaddr));
+
+	/* sub command */
+	kwr->sc_imm.cmd_more = cpu_to_be32(ULPTX_CMD_V(ULP_TX_SC_IMM));
+	kwr->sc_imm.len = cpu_to_be32(klen);
+
+	lock_sock(sk);
+	/* key info */
+	kctx = (struct _key_ctx *)(kwr + 1);
+	ret = chtls_key_info(csk, kctx, keylen, optname, cipher_type);
+	if (ret)
+		goto out_notcb;
+
+	if (unlikely(csk_flag(sk, CSK_ABORT_SHUTDOWN)))
+		goto out_notcb;
+
+	set_wr_txq(skb, CPL_PRIORITY_DATA, csk->tlshws.txqid);
+	csk->wr_credits -= DIV_ROUND_UP(len, 16);
+	csk->wr_unacked += DIV_ROUND_UP(len, 16);
+	enqueue_wr(csk, skb);
+	cxgb4_ofld_send(csk->egress_dev, skb);
+	skb = NULL;
+
+	chtls_set_scmd(csk);
+	/* Clear quiesce for Rx key */
+	if (optname == TLS_RX) {
+		ret = chtls_set_tcb_keyid(sk, keyid);
+		if (ret)
+			goto out_notcb;
+		ret = chtls_set_tcb_field(sk, 0,
+					  TCB_ULP_RAW_V(TCB_ULP_RAW_M),
+					  TCB_ULP_RAW_V((TF_TLS_KEY_SIZE_V(1) |
+					  TF_TLS_CONTROL_V(1) |
+					  TF_TLS_ACTIVE_V(1) |
+					  TF_TLS_ENABLE_V(1))));
+		if (ret)
+			goto out_notcb;
+		ret = chtls_set_tcb_seqno(sk);
+		if (ret)
+			goto out_notcb;
+		ret = chtls_set_tcb_quiesce(sk, 0);
+		if (ret)
+			goto out_notcb;
+		csk->tlshws.rxkey = keyid;
+	} else {
+		csk->tlshws.tx_seq_no = 0;
+		csk->tlshws.txkey = keyid;
+	}
+
+	release_sock(sk);
+	return ret;
+out_notcb:
+	release_sock(sk);
+	free_tls_keyid(sk);
+out_nokey:
+	kfree_skb(skb);
+	return ret;
+}
diff --git a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_io.c b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_io.c
new file mode 100644
index 000000000..5e45bef4f
--- /dev/null
+++ b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_io.c
@@ -0,0 +1,1933 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2018 Chelsio Communications, Inc.
+ *
+ * Written by: Atul Gupta (atul.gupta@chelsio.com)
+ */
+
+#include <linux/module.h>
+#include <linux/list.h>
+#include <linux/workqueue.h>
+#include <linux/skbuff.h>
+#include <linux/timer.h>
+#include <linux/notifier.h>
+#include <linux/inetdevice.h>
+#include <linux/ip.h>
+#include <linux/tcp.h>
+#include <linux/sched/signal.h>
+#include <net/tcp.h>
+#include <net/busy_poll.h>
+#include <crypto/aes.h>
+
+#include "chtls.h"
+#include "chtls_cm.h"
+
+static bool is_tls_tx(struct chtls_sock *csk)
+{
+	return csk->tlshws.txkey >= 0;
+}
+
+static bool is_tls_rx(struct chtls_sock *csk)
+{
+	return csk->tlshws.rxkey >= 0;
+}
+
+static int data_sgl_len(const struct sk_buff *skb)
+{
+	unsigned int cnt;
+
+	cnt = skb_shinfo(skb)->nr_frags;
+	return sgl_len(cnt) * 8;
+}
+
+static int nos_ivs(struct sock *sk, unsigned int size)
+{
+	struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
+
+	return DIV_ROUND_UP(size, csk->tlshws.mfs);
+}
+
+static int set_ivs_imm(struct sock *sk, const struct sk_buff *skb)
+{
+	int ivs_size = nos_ivs(sk, skb->len) * CIPHER_BLOCK_SIZE;
+	int hlen = TLS_WR_CPL_LEN + data_sgl_len(skb);
+
+	if ((hlen + KEY_ON_MEM_SZ + ivs_size) <
+	    MAX_IMM_OFLD_TX_DATA_WR_LEN) {
+		ULP_SKB_CB(skb)->ulp.tls.iv = 1;
+		return 1;
+	}
+	ULP_SKB_CB(skb)->ulp.tls.iv = 0;
+	return 0;
+}
+
+static int max_ivs_size(struct sock *sk, int size)
+{
+	return nos_ivs(sk, size) * CIPHER_BLOCK_SIZE;
+}
+
+static int ivs_size(struct sock *sk, const struct sk_buff *skb)
+{
+	return set_ivs_imm(sk, skb) ? (nos_ivs(sk, skb->len) *
+		 CIPHER_BLOCK_SIZE) : 0;
+}
+
+static int flowc_wr_credits(int nparams, int *flowclenp)
+{
+	int flowclen16, flowclen;
+
+	flowclen = offsetof(struct fw_flowc_wr, mnemval[nparams]);
+	flowclen16 = DIV_ROUND_UP(flowclen, 16);
+	flowclen = flowclen16 * 16;
+
+	if (flowclenp)
+		*flowclenp = flowclen;
+
+	return flowclen16;
+}
+
+static struct sk_buff *create_flowc_wr_skb(struct sock *sk,
+					   struct fw_flowc_wr *flowc,
+					   int flowclen)
+{
+	struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
+	struct sk_buff *skb;
+
+	skb = alloc_skb(flowclen, GFP_ATOMIC);
+	if (!skb)
+		return NULL;
+
+	__skb_put_data(skb, flowc, flowclen);
+	skb_set_queue_mapping(skb, (csk->txq_idx << 1) | CPL_PRIORITY_DATA);
+
+	return skb;
+}
+
+static int send_flowc_wr(struct sock *sk, struct fw_flowc_wr *flowc,
+			 int flowclen)
+{
+	struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
+	struct tcp_sock *tp = tcp_sk(sk);
+	struct sk_buff *skb;
+	int flowclen16;
+	int ret;
+
+	flowclen16 = flowclen / 16;
+
+	if (csk_flag(sk, CSK_TX_DATA_SENT)) {
+		skb = create_flowc_wr_skb(sk, flowc, flowclen);
+		if (!skb)
+			return -ENOMEM;
+
+		skb_entail(sk, skb,
+			   ULPCB_FLAG_NO_HDR | ULPCB_FLAG_NO_APPEND);
+		return 0;
+	}
+
+	ret = cxgb4_immdata_send(csk->egress_dev,
+				 csk->txq_idx,
+				 flowc, flowclen);
+	if (!ret)
+		return flowclen16;
+	skb = create_flowc_wr_skb(sk, flowc, flowclen);
+	if (!skb)
+		return -ENOMEM;
+	send_or_defer(sk, tp, skb, 0);
+	return flowclen16;
+}
+
+static u8 tcp_state_to_flowc_state(u8 state)
+{
+	switch (state) {
+	case TCP_ESTABLISHED:
+		return FW_FLOWC_MNEM_TCPSTATE_ESTABLISHED;
+	case TCP_CLOSE_WAIT:
+		return FW_FLOWC_MNEM_TCPSTATE_CLOSEWAIT;
+	case TCP_FIN_WAIT1:
+		return FW_FLOWC_MNEM_TCPSTATE_FINWAIT1;
+	case TCP_CLOSING:
+		return FW_FLOWC_MNEM_TCPSTATE_CLOSING;
+	case TCP_LAST_ACK:
+		return FW_FLOWC_MNEM_TCPSTATE_LASTACK;
+	case TCP_FIN_WAIT2:
+		return FW_FLOWC_MNEM_TCPSTATE_FINWAIT2;
+	}
+
+	return FW_FLOWC_MNEM_TCPSTATE_ESTABLISHED;
+}
+
+int send_tx_flowc_wr(struct sock *sk, int compl,
+		     u32 snd_nxt, u32 rcv_nxt)
+{
+	struct flowc_packed {
+		struct fw_flowc_wr fc;
+		struct fw_flowc_mnemval mnemval[FW_FLOWC_MNEM_MAX];
+	} __packed sflowc;
+	int nparams, paramidx, flowclen16, flowclen;
+	struct fw_flowc_wr *flowc;
+	struct chtls_sock *csk;
+	struct tcp_sock *tp;
+
+	csk = rcu_dereference_sk_user_data(sk);
+	tp = tcp_sk(sk);
+	memset(&sflowc, 0, sizeof(sflowc));
+	flowc = &sflowc.fc;
+
+#define FLOWC_PARAM(__m, __v) \
+	do { \
+		flowc->mnemval[paramidx].mnemonic = FW_FLOWC_MNEM_##__m; \
+		flowc->mnemval[paramidx].val = cpu_to_be32(__v); \
+		paramidx++; \
+	} while (0)
+
+	paramidx = 0;
+
+	FLOWC_PARAM(PFNVFN, FW_PFVF_CMD_PFN_V(csk->cdev->lldi->pf));
+	FLOWC_PARAM(CH, csk->tx_chan);
+	FLOWC_PARAM(PORT, csk->tx_chan);
+	FLOWC_PARAM(IQID, csk->rss_qid);
+	FLOWC_PARAM(SNDNXT, tp->snd_nxt);
+	FLOWC_PARAM(RCVNXT, tp->rcv_nxt);
+	FLOWC_PARAM(SNDBUF, csk->sndbuf);
+	FLOWC_PARAM(MSS, tp->mss_cache);
+	FLOWC_PARAM(TCPSTATE, tcp_state_to_flowc_state(sk->sk_state));
+
+	if (SND_WSCALE(tp))
+		FLOWC_PARAM(RCV_SCALE, SND_WSCALE(tp));
+
+	if (csk->ulp_mode == ULP_MODE_TLS)
+		FLOWC_PARAM(ULD_MODE, ULP_MODE_TLS);
+
+	if (csk->tlshws.fcplenmax)
+		FLOWC_PARAM(TXDATAPLEN_MAX, csk->tlshws.fcplenmax);
+
+	nparams = paramidx;
+#undef FLOWC_PARAM
+
+	flowclen16 = flowc_wr_credits(nparams, &flowclen);
+	flowc->op_to_nparams =
+		cpu_to_be32(FW_WR_OP_V(FW_FLOWC_WR) |
+			    FW_WR_COMPL_V(compl) |
+			    FW_FLOWC_WR_NPARAMS_V(nparams));
+	flowc->flowid_len16 = cpu_to_be32(FW_WR_LEN16_V(flowclen16) |
+					  FW_WR_FLOWID_V(csk->tid));
+
+	return send_flowc_wr(sk, flowc, flowclen);
+}
+
+/* Copy IVs to WR */
+static int tls_copy_ivs(struct sock *sk, struct sk_buff *skb)
+
+{
+	struct chtls_sock *csk;
+	unsigned char *iv_loc;
+	struct chtls_hws *hws;
+	unsigned char *ivs;
+	u16 number_of_ivs;
+	struct page *page;
+	int err = 0;
+
+	csk = rcu_dereference_sk_user_data(sk);
+	hws = &csk->tlshws;
+	number_of_ivs = nos_ivs(sk, skb->len);
+
+	if (number_of_ivs > MAX_IVS_PAGE) {
+		pr_warn("MAX IVs in PAGE exceeded %d\n", number_of_ivs);
+		return -ENOMEM;
+	}
+
+	/* generate the  IVs */
+	ivs = kmalloc_array(CIPHER_BLOCK_SIZE, number_of_ivs, GFP_ATOMIC);
+	if (!ivs)
+		return -ENOMEM;
+	get_random_bytes(ivs, number_of_ivs * CIPHER_BLOCK_SIZE);
+
+	if (skb_ulp_tls_iv_imm(skb)) {
+		/* send the IVs as immediate data in the WR */
+		iv_loc = (unsigned char *)__skb_push(skb, number_of_ivs *
+						CIPHER_BLOCK_SIZE);
+		if (iv_loc)
+			memcpy(iv_loc, ivs, number_of_ivs * CIPHER_BLOCK_SIZE);
+
+		hws->ivsize = number_of_ivs * CIPHER_BLOCK_SIZE;
+	} else {
+		/* Send the IVs as sgls */
+		/* Already accounted IV DSGL for credits */
+		skb_shinfo(skb)->nr_frags--;
+		page = alloc_pages(sk->sk_allocation | __GFP_COMP, 0);
+		if (!page) {
+			pr_info("%s : Page allocation for IVs failed\n",
+				__func__);
+			err = -ENOMEM;
+			goto out;
+		}
+		memcpy(page_address(page), ivs, number_of_ivs *
+		       CIPHER_BLOCK_SIZE);
+		skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags, page, 0,
+				   number_of_ivs * CIPHER_BLOCK_SIZE);
+		hws->ivsize = 0;
+	}
+out:
+	kfree(ivs);
+	return err;
+}
+
+/* Copy Key to WR */
+static void tls_copy_tx_key(struct sock *sk, struct sk_buff *skb)
+{
+	struct ulptx_sc_memrd *sc_memrd;
+	struct chtls_sock *csk;
+	struct chtls_dev *cdev;
+	struct ulptx_idata *sc;
+	struct chtls_hws *hws;
+	u32 immdlen;
+	int kaddr;
+
+	csk = rcu_dereference_sk_user_data(sk);
+	hws = &csk->tlshws;
+	cdev = csk->cdev;
+
+	immdlen = sizeof(*sc) + sizeof(*sc_memrd);
+	kaddr = keyid_to_addr(cdev->kmap.start, hws->txkey);
+	sc = (struct ulptx_idata *)__skb_push(skb, immdlen);
+	if (sc) {
+		sc->cmd_more = htonl(ULPTX_CMD_V(ULP_TX_SC_NOOP));
+		sc->len = htonl(0);
+		sc_memrd = (struct ulptx_sc_memrd *)(sc + 1);
+		sc_memrd->cmd_to_len =
+				htonl(ULPTX_CMD_V(ULP_TX_SC_MEMRD) |
+				ULP_TX_SC_MORE_V(1) |
+				ULPTX_LEN16_V(hws->keylen >> 4));
+		sc_memrd->addr = htonl(kaddr);
+	}
+}
+
+static u64 tlstx_incr_seqnum(struct chtls_hws *hws)
+{
+	return hws->tx_seq_no++;
+}
+
+static bool is_sg_request(const struct sk_buff *skb)
+{
+	return skb->peeked ||
+		(skb->len > MAX_IMM_ULPTX_WR_LEN);
+}
+
+/*
+ * Returns true if an sk_buff carries urgent data.
+ */
+static bool skb_urgent(struct sk_buff *skb)
+{
+	return ULP_SKB_CB(skb)->flags & ULPCB_FLAG_URG;
+}
+
+/* TLS content type for CPL SFO */
+static unsigned char tls_content_type(unsigned char content_type)
+{
+	switch (content_type) {
+	case TLS_HDR_TYPE_CCS:
+		return CPL_TX_TLS_SFO_TYPE_CCS;
+	case TLS_HDR_TYPE_ALERT:
+		return CPL_TX_TLS_SFO_TYPE_ALERT;
+	case TLS_HDR_TYPE_HANDSHAKE:
+		return CPL_TX_TLS_SFO_TYPE_HANDSHAKE;
+	case TLS_HDR_TYPE_HEARTBEAT:
+		return CPL_TX_TLS_SFO_TYPE_HEARTBEAT;
+	}
+	return CPL_TX_TLS_SFO_TYPE_DATA;
+}
+
+static void tls_tx_data_wr(struct sock *sk, struct sk_buff *skb,
+			   int dlen, int tls_immd, u32 credits,
+			   int expn, int pdus)
+{
+	struct fw_tlstx_data_wr *req_wr;
+	struct cpl_tx_tls_sfo *req_cpl;
+	unsigned int wr_ulp_mode_force;
+	struct tls_scmd *updated_scmd;
+	unsigned char data_type;
+	struct chtls_sock *csk;
+	struct net_device *dev;
+	struct chtls_hws *hws;
+	struct tls_scmd *scmd;
+	struct adapter *adap;
+	unsigned char *req;
+	int immd_len;
+	int iv_imm;
+	int len;
+
+	csk = rcu_dereference_sk_user_data(sk);
+	iv_imm = skb_ulp_tls_iv_imm(skb);
+	dev = csk->egress_dev;
+	adap = netdev2adap(dev);
+	hws = &csk->tlshws;
+	scmd = &hws->scmd;
+	len = dlen + expn;
+
+	dlen = (dlen < hws->mfs) ? dlen : hws->mfs;
+	atomic_inc(&adap->chcr_stats.tls_pdu_tx);
+
+	updated_scmd = scmd;
+	updated_scmd->seqno_numivs &= 0xffffff80;
+	updated_scmd->seqno_numivs |= SCMD_NUM_IVS_V(pdus);
+	hws->scmd = *updated_scmd;
+
+	req = (unsigned char *)__skb_push(skb, sizeof(struct cpl_tx_tls_sfo));
+	req_cpl = (struct cpl_tx_tls_sfo *)req;
+	req = (unsigned char *)__skb_push(skb, (sizeof(struct
+				fw_tlstx_data_wr)));
+
+	req_wr = (struct fw_tlstx_data_wr *)req;
+	immd_len = (tls_immd ? dlen : 0);
+	req_wr->op_to_immdlen =
+		htonl(FW_WR_OP_V(FW_TLSTX_DATA_WR) |
+		FW_TLSTX_DATA_WR_COMPL_V(1) |
+		FW_TLSTX_DATA_WR_IMMDLEN_V(immd_len));
+	req_wr->flowid_len16 = htonl(FW_TLSTX_DATA_WR_FLOWID_V(csk->tid) |
+				     FW_TLSTX_DATA_WR_LEN16_V(credits));
+	wr_ulp_mode_force = TX_ULP_MODE_V(ULP_MODE_TLS);
+
+	if (is_sg_request(skb))
+		wr_ulp_mode_force |= FW_OFLD_TX_DATA_WR_ALIGNPLD_F |
+			((tcp_sk(sk)->nonagle & TCP_NAGLE_OFF) ? 0 :
+			FW_OFLD_TX_DATA_WR_SHOVE_F);
+
+	req_wr->lsodisable_to_flags =
+			htonl(TX_ULP_MODE_V(ULP_MODE_TLS) |
+			      TX_URG_V(skb_urgent(skb)) |
+			      T6_TX_FORCE_F | wr_ulp_mode_force |
+			      TX_SHOVE_V((!csk_flag(sk, CSK_TX_MORE_DATA)) &&
+					 skb_queue_empty(&csk->txq)));
+
+	req_wr->ctxloc_to_exp =
+			htonl(FW_TLSTX_DATA_WR_NUMIVS_V(pdus) |
+			      FW_TLSTX_DATA_WR_EXP_V(expn) |
+			      FW_TLSTX_DATA_WR_CTXLOC_V(CHTLS_KEY_CONTEXT_DDR) |
+			      FW_TLSTX_DATA_WR_IVDSGL_V(!iv_imm) |
+			      FW_TLSTX_DATA_WR_KEYSIZE_V(hws->keylen >> 4));
+
+	/* Fill in the length */
+	req_wr->plen = htonl(len);
+	req_wr->mfs = htons(hws->mfs);
+	req_wr->adjustedplen_pkd =
+		htons(FW_TLSTX_DATA_WR_ADJUSTEDPLEN_V(hws->adjustlen));
+	req_wr->expinplenmax_pkd =
+		htons(FW_TLSTX_DATA_WR_EXPINPLENMAX_V(hws->expansion));
+	req_wr->pdusinplenmax_pkd =
+		FW_TLSTX_DATA_WR_PDUSINPLENMAX_V(hws->pdus);
+	req_wr->r10 = 0;
+
+	data_type = tls_content_type(ULP_SKB_CB(skb)->ulp.tls.type);
+	req_cpl->op_to_seg_len = htonl(CPL_TX_TLS_SFO_OPCODE_V(CPL_TX_TLS_SFO) |
+				       CPL_TX_TLS_SFO_DATA_TYPE_V(data_type) |
+				       CPL_TX_TLS_SFO_CPL_LEN_V(2) |
+				       CPL_TX_TLS_SFO_SEG_LEN_V(dlen));
+	req_cpl->pld_len = htonl(len - expn);
+
+	req_cpl->type_protover = htonl(CPL_TX_TLS_SFO_TYPE_V
+		((data_type == CPL_TX_TLS_SFO_TYPE_HEARTBEAT) ?
+		TLS_HDR_TYPE_HEARTBEAT : 0) |
+		CPL_TX_TLS_SFO_PROTOVER_V(0));
+
+	/* create the s-command */
+	req_cpl->r1_lo = 0;
+	req_cpl->seqno_numivs  = cpu_to_be32(hws->scmd.seqno_numivs);
+	req_cpl->ivgen_hdrlen = cpu_to_be32(hws->scmd.ivgen_hdrlen);
+	req_cpl->scmd1 = cpu_to_be64(tlstx_incr_seqnum(hws));
+}
+
+/*
+ * Calculate the TLS data expansion size
+ */
+static int chtls_expansion_size(struct sock *sk, int data_len,
+				int fullpdu,
+				unsigned short *pducnt)
+{
+	struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
+	struct chtls_hws *hws = &csk->tlshws;
+	struct tls_scmd *scmd = &hws->scmd;
+	int fragsize = hws->mfs;
+	int expnsize = 0;
+	int fragleft;
+	int fragcnt;
+	int expppdu;
+
+	if (SCMD_CIPH_MODE_G(scmd->seqno_numivs) ==
+	    SCMD_CIPH_MODE_AES_GCM) {
+		expppdu = GCM_TAG_SIZE + AEAD_EXPLICIT_DATA_SIZE +
+			  TLS_HEADER_LENGTH;
+
+		if (fullpdu) {
+			*pducnt = data_len / (expppdu + fragsize);
+			if (*pducnt > 32)
+				*pducnt = 32;
+			else if (!*pducnt)
+				*pducnt = 1;
+			expnsize = (*pducnt) * expppdu;
+			return expnsize;
+		}
+		fragcnt = (data_len / fragsize);
+		expnsize =  fragcnt * expppdu;
+		fragleft = data_len % fragsize;
+		if (fragleft > 0)
+			expnsize += expppdu;
+	}
+	return expnsize;
+}
+
+/* WR with IV, KEY and CPL SFO added */
+static void make_tlstx_data_wr(struct sock *sk, struct sk_buff *skb,
+			       int tls_tx_imm, int tls_len, u32 credits)
+{
+	unsigned short pdus_per_ulp = 0;
+	struct chtls_sock *csk;
+	struct chtls_hws *hws;
+	int expn_sz;
+	int pdus;
+
+	csk = rcu_dereference_sk_user_data(sk);
+	hws = &csk->tlshws;
+	pdus = DIV_ROUND_UP(tls_len, hws->mfs);
+	expn_sz = chtls_expansion_size(sk, tls_len, 0, NULL);
+	if (!hws->compute) {
+		hws->expansion = chtls_expansion_size(sk,
+						      hws->fcplenmax,
+						      1, &pdus_per_ulp);
+		hws->pdus = pdus_per_ulp;
+		hws->adjustlen = hws->pdus *
+			((hws->expansion / hws->pdus) + hws->mfs);
+		hws->compute = 1;
+	}
+	if (tls_copy_ivs(sk, skb))
+		return;
+	tls_copy_tx_key(sk, skb);
+	tls_tx_data_wr(sk, skb, tls_len, tls_tx_imm, credits, expn_sz, pdus);
+	hws->tx_seq_no += (pdus - 1);
+}
+
+static void make_tx_data_wr(struct sock *sk, struct sk_buff *skb,
+			    unsigned int immdlen, int len,
+			    u32 credits, u32 compl)
+{
+	struct fw_ofld_tx_data_wr *req;
+	unsigned int wr_ulp_mode_force;
+	struct chtls_sock *csk;
+	unsigned int opcode;
+
+	csk = rcu_dereference_sk_user_data(sk);
+	opcode = FW_OFLD_TX_DATA_WR;
+
+	req = (struct fw_ofld_tx_data_wr *)__skb_push(skb, sizeof(*req));
+	req->op_to_immdlen = htonl(WR_OP_V(opcode) |
+				FW_WR_COMPL_V(compl) |
+				FW_WR_IMMDLEN_V(immdlen));
+	req->flowid_len16 = htonl(FW_WR_FLOWID_V(csk->tid) |
+				FW_WR_LEN16_V(credits));
+
+	wr_ulp_mode_force = TX_ULP_MODE_V(csk->ulp_mode);
+	if (is_sg_request(skb))
+		wr_ulp_mode_force |= FW_OFLD_TX_DATA_WR_ALIGNPLD_F |
+			((tcp_sk(sk)->nonagle & TCP_NAGLE_OFF) ? 0 :
+				FW_OFLD_TX_DATA_WR_SHOVE_F);
+
+	req->tunnel_to_proxy = htonl(wr_ulp_mode_force |
+			TX_URG_V(skb_urgent(skb)) |
+			TX_SHOVE_V((!csk_flag(sk, CSK_TX_MORE_DATA)) &&
+				   skb_queue_empty(&csk->txq)));
+	req->plen = htonl(len);
+}
+
+static int chtls_wr_size(struct chtls_sock *csk, const struct sk_buff *skb,
+			 bool size)
+{
+	int wr_size;
+
+	wr_size = TLS_WR_CPL_LEN;
+	wr_size += KEY_ON_MEM_SZ;
+	wr_size += ivs_size(csk->sk, skb);
+
+	if (size)
+		return wr_size;
+
+	/* frags counted for IV dsgl */
+	if (!skb_ulp_tls_iv_imm(skb))
+		skb_shinfo(skb)->nr_frags++;
+
+	return wr_size;
+}
+
+static bool is_ofld_imm(struct chtls_sock *csk, const struct sk_buff *skb)
+{
+	int length = skb->len;
+
+	if (skb->peeked || skb->len > MAX_IMM_ULPTX_WR_LEN)
+		return false;
+
+	if (likely(ULP_SKB_CB(skb)->flags & ULPCB_FLAG_NEED_HDR)) {
+		/* Check TLS header len for Immediate */
+		if (csk->ulp_mode == ULP_MODE_TLS &&
+		    skb_ulp_tls_inline(skb))
+			length += chtls_wr_size(csk, skb, true);
+		else
+			length += sizeof(struct fw_ofld_tx_data_wr);
+
+		return length <= MAX_IMM_OFLD_TX_DATA_WR_LEN;
+	}
+	return true;
+}
+
+static unsigned int calc_tx_flits(const struct sk_buff *skb,
+				  unsigned int immdlen)
+{
+	unsigned int flits, cnt;
+
+	flits = immdlen / 8;   /* headers */
+	cnt = skb_shinfo(skb)->nr_frags;
+	if (skb_tail_pointer(skb) != skb_transport_header(skb))
+		cnt++;
+	return flits + sgl_len(cnt);
+}
+
+static void arp_failure_discard(void *handle, struct sk_buff *skb)
+{
+	kfree_skb(skb);
+}
+
+int chtls_push_frames(struct chtls_sock *csk, int comp)
+{
+	struct chtls_hws *hws = &csk->tlshws;
+	struct tcp_sock *tp;
+	struct sk_buff *skb;
+	int total_size = 0;
+	struct sock *sk;
+	int wr_size;
+
+	wr_size = sizeof(struct fw_ofld_tx_data_wr);
+	sk = csk->sk;
+	tp = tcp_sk(sk);
+
+	if (unlikely(sk_in_state(sk, TCPF_SYN_SENT | TCPF_CLOSE)))
+		return 0;
+
+	if (unlikely(csk_flag(sk, CSK_ABORT_SHUTDOWN)))
+		return 0;
+
+	while (csk->wr_credits && (skb = skb_peek(&csk->txq)) &&
+	       (!(ULP_SKB_CB(skb)->flags & ULPCB_FLAG_HOLD) ||
+		skb_queue_len(&csk->txq) > 1)) {
+		unsigned int credit_len = skb->len;
+		unsigned int credits_needed;
+		unsigned int completion = 0;
+		int tls_len = skb->len;/* TLS data len before IV/key */
+		unsigned int immdlen;
+		int len = skb->len;    /* length [ulp bytes] inserted by hw */
+		int flowclen16 = 0;
+		int tls_tx_imm = 0;
+
+		immdlen = skb->len;
+		if (!is_ofld_imm(csk, skb)) {
+			immdlen = skb_transport_offset(skb);
+			if (skb_ulp_tls_inline(skb))
+				wr_size = chtls_wr_size(csk, skb, false);
+			credit_len = 8 * calc_tx_flits(skb, immdlen);
+		} else {
+			if (skb_ulp_tls_inline(skb)) {
+				wr_size = chtls_wr_size(csk, skb, false);
+				tls_tx_imm = 1;
+			}
+		}
+		if (likely(ULP_SKB_CB(skb)->flags & ULPCB_FLAG_NEED_HDR))
+			credit_len += wr_size;
+		credits_needed = DIV_ROUND_UP(credit_len, 16);
+		if (!csk_flag_nochk(csk, CSK_TX_DATA_SENT)) {
+			flowclen16 = send_tx_flowc_wr(sk, 1, tp->snd_nxt,
+						      tp->rcv_nxt);
+			if (flowclen16 <= 0)
+				break;
+			csk->wr_credits -= flowclen16;
+			csk->wr_unacked += flowclen16;
+			csk->wr_nondata += flowclen16;
+			csk_set_flag(csk, CSK_TX_DATA_SENT);
+		}
+
+		if (csk->wr_credits < credits_needed) {
+			if (skb_ulp_tls_inline(skb) &&
+			    !skb_ulp_tls_iv_imm(skb))
+				skb_shinfo(skb)->nr_frags--;
+			break;
+		}
+
+		__skb_unlink(skb, &csk->txq);
+		skb_set_queue_mapping(skb, (csk->txq_idx << 1) |
+				      CPL_PRIORITY_DATA);
+		if (hws->ofld)
+			hws->txqid = (skb->queue_mapping >> 1);
+		skb->csum = (__force __wsum)(credits_needed + csk->wr_nondata);
+		csk->wr_credits -= credits_needed;
+		csk->wr_unacked += credits_needed;
+		csk->wr_nondata = 0;
+		enqueue_wr(csk, skb);
+
+		if (likely(ULP_SKB_CB(skb)->flags & ULPCB_FLAG_NEED_HDR)) {
+			if ((comp && csk->wr_unacked == credits_needed) ||
+			    (ULP_SKB_CB(skb)->flags & ULPCB_FLAG_COMPL) ||
+			    csk->wr_unacked >= csk->wr_max_credits / 2) {
+				completion = 1;
+				csk->wr_unacked = 0;
+			}
+			if (skb_ulp_tls_inline(skb))
+				make_tlstx_data_wr(sk, skb, tls_tx_imm,
+						   tls_len, credits_needed);
+			else
+				make_tx_data_wr(sk, skb, immdlen, len,
+						credits_needed, completion);
+			tp->snd_nxt += len;
+			tp->lsndtime = tcp_jiffies32;
+			if (completion)
+				ULP_SKB_CB(skb)->flags &= ~ULPCB_FLAG_NEED_HDR;
+		} else {
+			struct cpl_close_con_req *req = cplhdr(skb);
+			unsigned int cmd  = CPL_OPCODE_G(ntohl
+					     (OPCODE_TID(req)));
+
+			if (cmd == CPL_CLOSE_CON_REQ)
+				csk_set_flag(csk,
+					     CSK_CLOSE_CON_REQUESTED);
+
+			if ((ULP_SKB_CB(skb)->flags & ULPCB_FLAG_COMPL) &&
+			    (csk->wr_unacked >= csk->wr_max_credits / 2)) {
+				req->wr.wr_hi |= htonl(FW_WR_COMPL_F);
+				csk->wr_unacked = 0;
+			}
+		}
+		total_size += skb->truesize;
+		if (ULP_SKB_CB(skb)->flags & ULPCB_FLAG_BARRIER)
+			csk_set_flag(csk, CSK_TX_WAIT_IDLE);
+		t4_set_arp_err_handler(skb, NULL, arp_failure_discard);
+		cxgb4_l2t_send(csk->egress_dev, skb, csk->l2t_entry);
+	}
+	sk->sk_wmem_queued -= total_size;
+	return total_size;
+}
+
+static void mark_urg(struct tcp_sock *tp, int flags,
+		     struct sk_buff *skb)
+{
+	if (unlikely(flags & MSG_OOB)) {
+		tp->snd_up = tp->write_seq;
+		ULP_SKB_CB(skb)->flags = ULPCB_FLAG_URG |
+					 ULPCB_FLAG_BARRIER |
+					 ULPCB_FLAG_NO_APPEND |
+					 ULPCB_FLAG_NEED_HDR;
+	}
+}
+
+/*
+ * Returns true if a connection should send more data to TCP engine
+ */
+static bool should_push(struct sock *sk)
+{
+	struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
+	struct chtls_dev *cdev = csk->cdev;
+	struct tcp_sock *tp = tcp_sk(sk);
+
+	/*
+	 * If we've released our offload resources there's nothing to do ...
+	 */
+	if (!cdev)
+		return false;
+
+	/*
+	 * If there aren't any work requests in flight, or there isn't enough
+	 * data in flight, or Nagle is off then send the current TX_DATA
+	 * otherwise hold it and wait to accumulate more data.
+	 */
+	return csk->wr_credits == csk->wr_max_credits ||
+		(tp->nonagle & TCP_NAGLE_OFF);
+}
+
+/*
+ * Returns true if a TCP socket is corked.
+ */
+static bool corked(const struct tcp_sock *tp, int flags)
+{
+	return (flags & MSG_MORE) || (tp->nonagle & TCP_NAGLE_CORK);
+}
+
+/*
+ * Returns true if a send should try to push new data.
+ */
+static bool send_should_push(struct sock *sk, int flags)
+{
+	return should_push(sk) && !corked(tcp_sk(sk), flags);
+}
+
+void chtls_tcp_push(struct sock *sk, int flags)
+{
+	struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
+	int qlen = skb_queue_len(&csk->txq);
+
+	if (likely(qlen)) {
+		struct sk_buff *skb = skb_peek_tail(&csk->txq);
+		struct tcp_sock *tp = tcp_sk(sk);
+
+		mark_urg(tp, flags, skb);
+
+		if (!(ULP_SKB_CB(skb)->flags & ULPCB_FLAG_NO_APPEND) &&
+		    corked(tp, flags)) {
+			ULP_SKB_CB(skb)->flags |= ULPCB_FLAG_HOLD;
+			return;
+		}
+
+		ULP_SKB_CB(skb)->flags &= ~ULPCB_FLAG_HOLD;
+		if (qlen == 1 &&
+		    ((ULP_SKB_CB(skb)->flags & ULPCB_FLAG_NO_APPEND) ||
+		     should_push(sk)))
+			chtls_push_frames(csk, 1);
+	}
+}
+
+/*
+ * Calculate the size for a new send sk_buff.  It's maximum size so we can
+ * pack lots of data into it, unless we plan to send it immediately, in which
+ * case we size it more tightly.
+ *
+ * Note: we don't bother compensating for MSS < PAGE_SIZE because it doesn't
+ * arise in normal cases and when it does we are just wasting memory.
+ */
+static int select_size(struct sock *sk, int io_len, int flags, int len)
+{
+	const int pgbreak = SKB_MAX_HEAD(len);
+
+	/*
+	 * If the data wouldn't fit in the main body anyway, put only the
+	 * header in the main body so it can use immediate data and place all
+	 * the payload in page fragments.
+	 */
+	if (io_len > pgbreak)
+		return 0;
+
+	/*
+	 * If we will be accumulating payload get a large main body.
+	 */
+	if (!send_should_push(sk, flags))
+		return pgbreak;
+
+	return io_len;
+}
+
+void skb_entail(struct sock *sk, struct sk_buff *skb, int flags)
+{
+	struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
+	struct tcp_sock *tp = tcp_sk(sk);
+
+	ULP_SKB_CB(skb)->seq = tp->write_seq;
+	ULP_SKB_CB(skb)->flags = flags;
+	__skb_queue_tail(&csk->txq, skb);
+	sk->sk_wmem_queued += skb->truesize;
+
+	if (TCP_PAGE(sk) && TCP_OFF(sk)) {
+		put_page(TCP_PAGE(sk));
+		TCP_PAGE(sk) = NULL;
+		TCP_OFF(sk) = 0;
+	}
+}
+
+static struct sk_buff *get_tx_skb(struct sock *sk, int size)
+{
+	struct sk_buff *skb;
+
+	skb = alloc_skb(size + TX_HEADER_LEN, sk->sk_allocation);
+	if (likely(skb)) {
+		skb_reserve(skb, TX_HEADER_LEN);
+		skb_entail(sk, skb, ULPCB_FLAG_NEED_HDR);
+		skb_reset_transport_header(skb);
+	}
+	return skb;
+}
+
+static struct sk_buff *get_record_skb(struct sock *sk, int size, bool zcopy)
+{
+	struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
+	struct sk_buff *skb;
+
+	skb = alloc_skb(((zcopy ? 0 : size) + TX_TLSHDR_LEN +
+			KEY_ON_MEM_SZ + max_ivs_size(sk, size)),
+			sk->sk_allocation);
+	if (likely(skb)) {
+		skb_reserve(skb, (TX_TLSHDR_LEN +
+			    KEY_ON_MEM_SZ + max_ivs_size(sk, size)));
+		skb_entail(sk, skb, ULPCB_FLAG_NEED_HDR);
+		skb_reset_transport_header(skb);
+		ULP_SKB_CB(skb)->ulp.tls.ofld = 1;
+		ULP_SKB_CB(skb)->ulp.tls.type = csk->tlshws.type;
+	}
+	return skb;
+}
+
+static void tx_skb_finalize(struct sk_buff *skb)
+{
+	struct ulp_skb_cb *cb = ULP_SKB_CB(skb);
+
+	if (!(cb->flags & ULPCB_FLAG_NO_HDR))
+		cb->flags = ULPCB_FLAG_NEED_HDR;
+	cb->flags |= ULPCB_FLAG_NO_APPEND;
+}
+
+static void push_frames_if_head(struct sock *sk)
+{
+	struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
+
+	if (skb_queue_len(&csk->txq) == 1)
+		chtls_push_frames(csk, 1);
+}
+
+static int chtls_skb_copy_to_page_nocache(struct sock *sk,
+					  struct iov_iter *from,
+					  struct sk_buff *skb,
+					  struct page *page,
+					  int off, int copy)
+{
+	int err;
+
+	err = skb_do_copy_data_nocache(sk, skb, from, page_address(page) +
+				       off, copy, skb->len);
+	if (err)
+		return err;
+
+	skb->len             += copy;
+	skb->data_len        += copy;
+	skb->truesize        += copy;
+	sk->sk_wmem_queued   += copy;
+	return 0;
+}
+
+static bool csk_mem_free(struct chtls_dev *cdev, struct sock *sk)
+{
+	return (cdev->max_host_sndbuf - sk->sk_wmem_queued > 0);
+}
+
+static int csk_wait_memory(struct chtls_dev *cdev,
+			   struct sock *sk, long *timeo_p)
+{
+	DEFINE_WAIT_FUNC(wait, woken_wake_function);
+	int ret, err = 0;
+	long current_timeo;
+	long vm_wait = 0;
+	bool noblock;
+
+	current_timeo = *timeo_p;
+	noblock = (*timeo_p ? false : true);
+	if (csk_mem_free(cdev, sk)) {
+		current_timeo = prandom_u32_max(HZ / 5) + 2;
+		vm_wait = prandom_u32_max(HZ / 5) + 2;
+	}
+
+	add_wait_queue(sk_sleep(sk), &wait);
+	while (1) {
+		sk_set_bit(SOCKWQ_ASYNC_NOSPACE, sk);
+
+		if (sk->sk_err || (sk->sk_shutdown & SEND_SHUTDOWN))
+			goto do_error;
+		if (!*timeo_p) {
+			if (noblock)
+				set_bit(SOCK_NOSPACE, &sk->sk_socket->flags);
+			goto do_nonblock;
+		}
+		if (signal_pending(current))
+			goto do_interrupted;
+		sk_clear_bit(SOCKWQ_ASYNC_NOSPACE, sk);
+		if (csk_mem_free(cdev, sk) && !vm_wait)
+			break;
+
+		set_bit(SOCK_NOSPACE, &sk->sk_socket->flags);
+		sk->sk_write_pending++;
+		ret = sk_wait_event(sk, &current_timeo, sk->sk_err ||
+				    (sk->sk_shutdown & SEND_SHUTDOWN) ||
+				    (csk_mem_free(cdev, sk) && !vm_wait),
+				    &wait);
+		sk->sk_write_pending--;
+		if (ret < 0)
+			goto do_error;
+
+		if (vm_wait) {
+			vm_wait -= current_timeo;
+			current_timeo = *timeo_p;
+			if (current_timeo != MAX_SCHEDULE_TIMEOUT) {
+				current_timeo -= vm_wait;
+				if (current_timeo < 0)
+					current_timeo = 0;
+			}
+			vm_wait = 0;
+		}
+		*timeo_p = current_timeo;
+	}
+do_rm_wq:
+	remove_wait_queue(sk_sleep(sk), &wait);
+	return err;
+do_error:
+	err = -EPIPE;
+	goto do_rm_wq;
+do_nonblock:
+	err = -EAGAIN;
+	goto do_rm_wq;
+do_interrupted:
+	err = sock_intr_errno(*timeo_p);
+	goto do_rm_wq;
+}
+
+static int chtls_proccess_cmsg(struct sock *sk, struct msghdr *msg,
+			       unsigned char *record_type)
+{
+	struct cmsghdr *cmsg;
+	int rc = -EINVAL;
+
+	for_each_cmsghdr(cmsg, msg) {
+		if (!CMSG_OK(msg, cmsg))
+			return -EINVAL;
+		if (cmsg->cmsg_level != SOL_TLS)
+			continue;
+
+		switch (cmsg->cmsg_type) {
+		case TLS_SET_RECORD_TYPE:
+			if (cmsg->cmsg_len < CMSG_LEN(sizeof(*record_type)))
+				return -EINVAL;
+
+			if (msg->msg_flags & MSG_MORE)
+				return -EINVAL;
+
+			*record_type = *(unsigned char *)CMSG_DATA(cmsg);
+			rc = 0;
+			break;
+		default:
+			return -EINVAL;
+		}
+	}
+
+	return rc;
+}
+
+int chtls_sendmsg(struct sock *sk, struct msghdr *msg, size_t size)
+{
+	struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
+	struct chtls_dev *cdev = csk->cdev;
+	struct tcp_sock *tp = tcp_sk(sk);
+	struct sk_buff *skb;
+	int mss, flags, err;
+	int recordsz = 0;
+	int copied = 0;
+	long timeo;
+
+	lock_sock(sk);
+	flags = msg->msg_flags;
+	timeo = sock_sndtimeo(sk, flags & MSG_DONTWAIT);
+
+	if (!sk_in_state(sk, TCPF_ESTABLISHED | TCPF_CLOSE_WAIT)) {
+		err = sk_stream_wait_connect(sk, &timeo);
+		if (err)
+			goto out_err;
+	}
+
+	sk_clear_bit(SOCKWQ_ASYNC_NOSPACE, sk);
+	err = -EPIPE;
+	if (sk->sk_err || (sk->sk_shutdown & SEND_SHUTDOWN))
+		goto out_err;
+
+	mss = csk->mss;
+	csk_set_flag(csk, CSK_TX_MORE_DATA);
+
+	while (msg_data_left(msg)) {
+		int copy = 0;
+
+		skb = skb_peek_tail(&csk->txq);
+		if (skb) {
+			copy = mss - skb->len;
+			skb->ip_summed = CHECKSUM_UNNECESSARY;
+		}
+		if (!csk_mem_free(cdev, sk))
+			goto wait_for_sndbuf;
+
+		if (is_tls_tx(csk) && !csk->tlshws.txleft) {
+			unsigned char record_type = TLS_RECORD_TYPE_DATA;
+
+			if (unlikely(msg->msg_controllen)) {
+				err = chtls_proccess_cmsg(sk, msg,
+							  &record_type);
+				if (err)
+					goto out_err;
+
+				/* Avoid appending tls handshake, alert to tls data */
+				if (skb)
+					tx_skb_finalize(skb);
+			}
+
+			recordsz = size;
+			csk->tlshws.txleft = recordsz;
+			csk->tlshws.type = record_type;
+		}
+
+		if (!skb || (ULP_SKB_CB(skb)->flags & ULPCB_FLAG_NO_APPEND) ||
+		    copy <= 0) {
+new_buf:
+			if (skb) {
+				tx_skb_finalize(skb);
+				push_frames_if_head(sk);
+			}
+
+			if (is_tls_tx(csk)) {
+				skb = get_record_skb(sk,
+						     select_size(sk,
+								 recordsz,
+								 flags,
+								 TX_TLSHDR_LEN),
+								 false);
+			} else {
+				skb = get_tx_skb(sk,
+						 select_size(sk, size, flags,
+							     TX_HEADER_LEN));
+			}
+			if (unlikely(!skb))
+				goto wait_for_memory;
+
+			skb->ip_summed = CHECKSUM_UNNECESSARY;
+			copy = mss;
+		}
+		if (copy > size)
+			copy = size;
+
+		if (skb_tailroom(skb) > 0) {
+			copy = min(copy, skb_tailroom(skb));
+			if (is_tls_tx(csk))
+				copy = min_t(int, copy, csk->tlshws.txleft);
+			err = skb_add_data_nocache(sk, skb,
+						   &msg->msg_iter, copy);
+			if (err)
+				goto do_fault;
+		} else {
+			int i = skb_shinfo(skb)->nr_frags;
+			struct page *page = TCP_PAGE(sk);
+			int pg_size = PAGE_SIZE;
+			int off = TCP_OFF(sk);
+			bool merge;
+
+			if (page)
+				pg_size = page_size(page);
+			if (off < pg_size &&
+			    skb_can_coalesce(skb, i, page, off)) {
+				merge = true;
+				goto copy;
+			}
+			merge = false;
+			if (i == (is_tls_tx(csk) ? (MAX_SKB_FRAGS - 1) :
+			    MAX_SKB_FRAGS))
+				goto new_buf;
+
+			if (page && off == pg_size) {
+				put_page(page);
+				TCP_PAGE(sk) = page = NULL;
+				pg_size = PAGE_SIZE;
+			}
+
+			if (!page) {
+				gfp_t gfp = sk->sk_allocation;
+				int order = cdev->send_page_order;
+
+				if (order) {
+					page = alloc_pages(gfp | __GFP_COMP |
+							   __GFP_NOWARN |
+							   __GFP_NORETRY,
+							   order);
+					if (page)
+						pg_size <<= order;
+				}
+				if (!page) {
+					page = alloc_page(gfp);
+					pg_size = PAGE_SIZE;
+				}
+				if (!page)
+					goto wait_for_memory;
+				off = 0;
+			}
+copy:
+			if (copy > pg_size - off)
+				copy = pg_size - off;
+			if (is_tls_tx(csk))
+				copy = min_t(int, copy, csk->tlshws.txleft);
+
+			err = chtls_skb_copy_to_page_nocache(sk, &msg->msg_iter,
+							     skb, page,
+							     off, copy);
+			if (unlikely(err)) {
+				if (!TCP_PAGE(sk)) {
+					TCP_PAGE(sk) = page;
+					TCP_OFF(sk) = 0;
+				}
+				goto do_fault;
+			}
+			/* Update the skb. */
+			if (merge) {
+				skb_frag_size_add(
+						&skb_shinfo(skb)->frags[i - 1],
+						copy);
+			} else {
+				skb_fill_page_desc(skb, i, page, off, copy);
+				if (off + copy < pg_size) {
+					/* space left keep page */
+					get_page(page);
+					TCP_PAGE(sk) = page;
+				} else {
+					TCP_PAGE(sk) = NULL;
+				}
+			}
+			TCP_OFF(sk) = off + copy;
+		}
+		if (unlikely(skb->len == mss))
+			tx_skb_finalize(skb);
+		tp->write_seq += copy;
+		copied += copy;
+		size -= copy;
+
+		if (is_tls_tx(csk))
+			csk->tlshws.txleft -= copy;
+
+		if (corked(tp, flags) &&
+		    (sk_stream_wspace(sk) < sk_stream_min_wspace(sk)))
+			ULP_SKB_CB(skb)->flags |= ULPCB_FLAG_NO_APPEND;
+
+		if (size == 0)
+			goto out;
+
+		if (ULP_SKB_CB(skb)->flags & ULPCB_FLAG_NO_APPEND)
+			push_frames_if_head(sk);
+		continue;
+wait_for_sndbuf:
+		set_bit(SOCK_NOSPACE, &sk->sk_socket->flags);
+wait_for_memory:
+		err = csk_wait_memory(cdev, sk, &timeo);
+		if (err)
+			goto do_error;
+	}
+out:
+	csk_reset_flag(csk, CSK_TX_MORE_DATA);
+	if (copied)
+		chtls_tcp_push(sk, flags);
+done:
+	release_sock(sk);
+	return copied;
+do_fault:
+	if (!skb->len) {
+		__skb_unlink(skb, &csk->txq);
+		sk->sk_wmem_queued -= skb->truesize;
+		__kfree_skb(skb);
+	}
+do_error:
+	if (copied)
+		goto out;
+out_err:
+	if (csk_conn_inline(csk))
+		csk_reset_flag(csk, CSK_TX_MORE_DATA);
+	copied = sk_stream_error(sk, flags, err);
+	goto done;
+}
+
+int chtls_sendpage(struct sock *sk, struct page *page,
+		   int offset, size_t size, int flags)
+{
+	struct chtls_sock *csk;
+	struct chtls_dev *cdev;
+	int mss, err, copied;
+	struct tcp_sock *tp;
+	long timeo;
+
+	tp = tcp_sk(sk);
+	copied = 0;
+	csk = rcu_dereference_sk_user_data(sk);
+	cdev = csk->cdev;
+	lock_sock(sk);
+	timeo = sock_sndtimeo(sk, flags & MSG_DONTWAIT);
+
+	err = sk_stream_wait_connect(sk, &timeo);
+	if (!sk_in_state(sk, TCPF_ESTABLISHED | TCPF_CLOSE_WAIT) &&
+	    err != 0)
+		goto out_err;
+
+	mss = csk->mss;
+	csk_set_flag(csk, CSK_TX_MORE_DATA);
+
+	while (size > 0) {
+		struct sk_buff *skb = skb_peek_tail(&csk->txq);
+		int copy, i;
+
+		if (!skb || (ULP_SKB_CB(skb)->flags & ULPCB_FLAG_NO_APPEND) ||
+		    (copy = mss - skb->len) <= 0) {
+new_buf:
+			if (!csk_mem_free(cdev, sk))
+				goto wait_for_sndbuf;
+
+			if (is_tls_tx(csk)) {
+				skb = get_record_skb(sk,
+						     select_size(sk, size,
+								 flags,
+								 TX_TLSHDR_LEN),
+						     true);
+			} else {
+				skb = get_tx_skb(sk, 0);
+			}
+			if (!skb)
+				goto wait_for_memory;
+			copy = mss;
+		}
+		if (copy > size)
+			copy = size;
+
+		i = skb_shinfo(skb)->nr_frags;
+		if (skb_can_coalesce(skb, i, page, offset)) {
+			skb_frag_size_add(&skb_shinfo(skb)->frags[i - 1], copy);
+		} else if (i < MAX_SKB_FRAGS) {
+			get_page(page);
+			skb_fill_page_desc(skb, i, page, offset, copy);
+		} else {
+			tx_skb_finalize(skb);
+			push_frames_if_head(sk);
+			goto new_buf;
+		}
+
+		skb->len += copy;
+		if (skb->len == mss)
+			tx_skb_finalize(skb);
+		skb->data_len += copy;
+		skb->truesize += copy;
+		sk->sk_wmem_queued += copy;
+		tp->write_seq += copy;
+		copied += copy;
+		offset += copy;
+		size -= copy;
+
+		if (corked(tp, flags) &&
+		    (sk_stream_wspace(sk) < sk_stream_min_wspace(sk)))
+			ULP_SKB_CB(skb)->flags |= ULPCB_FLAG_NO_APPEND;
+
+		if (!size)
+			break;
+
+		if (unlikely(ULP_SKB_CB(skb)->flags & ULPCB_FLAG_NO_APPEND))
+			push_frames_if_head(sk);
+		continue;
+wait_for_sndbuf:
+		set_bit(SOCK_NOSPACE, &sk->sk_socket->flags);
+wait_for_memory:
+		err = csk_wait_memory(cdev, sk, &timeo);
+		if (err)
+			goto do_error;
+	}
+out:
+	csk_reset_flag(csk, CSK_TX_MORE_DATA);
+	if (copied)
+		chtls_tcp_push(sk, flags);
+done:
+	release_sock(sk);
+	return copied;
+
+do_error:
+	if (copied)
+		goto out;
+
+out_err:
+	if (csk_conn_inline(csk))
+		csk_reset_flag(csk, CSK_TX_MORE_DATA);
+	copied = sk_stream_error(sk, flags, err);
+	goto done;
+}
+
+static void chtls_select_window(struct sock *sk)
+{
+	struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
+	struct tcp_sock *tp = tcp_sk(sk);
+	unsigned int wnd = tp->rcv_wnd;
+
+	wnd = max_t(unsigned int, wnd, tcp_full_space(sk));
+	wnd = max_t(unsigned int, MIN_RCV_WND, wnd);
+
+	if (wnd > MAX_RCV_WND)
+		wnd = MAX_RCV_WND;
+
+/*
+ * Check if we need to grow the receive window in response to an increase in
+ * the socket's receive buffer size.  Some applications increase the buffer
+ * size dynamically and rely on the window to grow accordingly.
+ */
+
+	if (wnd > tp->rcv_wnd) {
+		tp->rcv_wup -= wnd - tp->rcv_wnd;
+		tp->rcv_wnd = wnd;
+		/* Mark the receive window as updated */
+		csk_reset_flag(csk, CSK_UPDATE_RCV_WND);
+	}
+}
+
+/*
+ * Send RX credits through an RX_DATA_ACK CPL message.  We are permitted
+ * to return without sending the message in case we cannot allocate
+ * an sk_buff.  Returns the number of credits sent.
+ */
+static u32 send_rx_credits(struct chtls_sock *csk, u32 credits)
+{
+	struct cpl_rx_data_ack *req;
+	struct sk_buff *skb;
+
+	skb = alloc_skb(sizeof(*req), GFP_ATOMIC);
+	if (!skb)
+		return 0;
+	__skb_put(skb, sizeof(*req));
+	req = (struct cpl_rx_data_ack *)skb->head;
+
+	set_wr_txq(skb, CPL_PRIORITY_ACK, csk->port_id);
+	INIT_TP_WR(req, csk->tid);
+	OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_RX_DATA_ACK,
+						    csk->tid));
+	req->credit_dack = cpu_to_be32(RX_CREDITS_V(credits) |
+				       RX_FORCE_ACK_F);
+	cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb);
+	return credits;
+}
+
+#define CREDIT_RETURN_STATE (TCPF_ESTABLISHED | \
+			     TCPF_FIN_WAIT1 | \
+			     TCPF_FIN_WAIT2)
+
+/*
+ * Called after some received data has been read.  It returns RX credits
+ * to the HW for the amount of data processed.
+ */
+static void chtls_cleanup_rbuf(struct sock *sk, int copied)
+{
+	struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
+	struct tcp_sock *tp;
+	int must_send;
+	u32 credits;
+	u32 thres;
+
+	thres = 15 * 1024;
+
+	if (!sk_in_state(sk, CREDIT_RETURN_STATE))
+		return;
+
+	chtls_select_window(sk);
+	tp = tcp_sk(sk);
+	credits = tp->copied_seq - tp->rcv_wup;
+	if (unlikely(!credits))
+		return;
+
+/*
+ * For coalescing to work effectively ensure the receive window has
+ * at least 16KB left.
+ */
+	must_send = credits + 16384 >= tp->rcv_wnd;
+
+	if (must_send || credits >= thres)
+		tp->rcv_wup += send_rx_credits(csk, credits);
+}
+
+static int chtls_pt_recvmsg(struct sock *sk, struct msghdr *msg, size_t len,
+			    int flags, int *addr_len)
+{
+	struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
+	struct chtls_hws *hws = &csk->tlshws;
+	struct net_device *dev = csk->egress_dev;
+	struct adapter *adap = netdev2adap(dev);
+	struct tcp_sock *tp = tcp_sk(sk);
+	unsigned long avail;
+	int buffers_freed;
+	int copied = 0;
+	int target;
+	long timeo;
+	int ret;
+
+	buffers_freed = 0;
+
+	timeo = sock_rcvtimeo(sk, flags & MSG_DONTWAIT);
+	target = sock_rcvlowat(sk, flags & MSG_WAITALL, len);
+
+	if (unlikely(csk_flag(sk, CSK_UPDATE_RCV_WND)))
+		chtls_cleanup_rbuf(sk, copied);
+
+	do {
+		struct sk_buff *skb;
+		u32 offset = 0;
+
+		if (unlikely(tp->urg_data &&
+			     tp->urg_seq == tp->copied_seq)) {
+			if (copied)
+				break;
+			if (signal_pending(current)) {
+				copied = timeo ? sock_intr_errno(timeo) :
+					-EAGAIN;
+				break;
+			}
+		}
+		skb = skb_peek(&sk->sk_receive_queue);
+		if (skb)
+			goto found_ok_skb;
+		if (csk->wr_credits &&
+		    skb_queue_len(&csk->txq) &&
+		    chtls_push_frames(csk, csk->wr_credits ==
+				      csk->wr_max_credits))
+			sk->sk_write_space(sk);
+
+		if (copied >= target && !READ_ONCE(sk->sk_backlog.tail))
+			break;
+
+		if (copied) {
+			if (sk->sk_err || sk->sk_state == TCP_CLOSE ||
+			    (sk->sk_shutdown & RCV_SHUTDOWN) ||
+			    signal_pending(current))
+				break;
+
+			if (!timeo)
+				break;
+		} else {
+			if (sock_flag(sk, SOCK_DONE))
+				break;
+			if (sk->sk_err) {
+				copied = sock_error(sk);
+				break;
+			}
+			if (sk->sk_shutdown & RCV_SHUTDOWN)
+				break;
+			if (sk->sk_state == TCP_CLOSE) {
+				copied = -ENOTCONN;
+				break;
+			}
+			if (!timeo) {
+				copied = -EAGAIN;
+				break;
+			}
+			if (signal_pending(current)) {
+				copied = sock_intr_errno(timeo);
+				break;
+			}
+		}
+		if (READ_ONCE(sk->sk_backlog.tail)) {
+			release_sock(sk);
+			lock_sock(sk);
+			chtls_cleanup_rbuf(sk, copied);
+			continue;
+		}
+
+		if (copied >= target)
+			break;
+		chtls_cleanup_rbuf(sk, copied);
+		ret = sk_wait_data(sk, &timeo, NULL);
+		if (ret < 0) {
+			copied = copied ? : ret;
+			goto unlock;
+		}
+		continue;
+found_ok_skb:
+		if (!skb->len) {
+			skb_dst_set(skb, NULL);
+			__skb_unlink(skb, &sk->sk_receive_queue);
+			kfree_skb(skb);
+
+			if (!copied && !timeo) {
+				copied = -EAGAIN;
+				break;
+			}
+
+			if (copied < target) {
+				release_sock(sk);
+				lock_sock(sk);
+				continue;
+			}
+			break;
+		}
+		offset = hws->copied_seq;
+		avail = skb->len - offset;
+		if (len < avail)
+			avail = len;
+
+		if (unlikely(tp->urg_data)) {
+			u32 urg_offset = tp->urg_seq - tp->copied_seq;
+
+			if (urg_offset < avail) {
+				if (urg_offset) {
+					avail = urg_offset;
+				} else if (!sock_flag(sk, SOCK_URGINLINE)) {
+					/* First byte is urgent, skip */
+					tp->copied_seq++;
+					offset++;
+					avail--;
+					if (!avail)
+						goto skip_copy;
+				}
+			}
+		}
+		/* Set record type if not already done. For a non-data record,
+		 * do not proceed if record type could not be copied.
+		 */
+		if (ULP_SKB_CB(skb)->flags & ULPCB_FLAG_TLS_HDR) {
+			struct tls_hdr *thdr = (struct tls_hdr *)skb->data;
+			int cerr = 0;
+
+			cerr = put_cmsg(msg, SOL_TLS, TLS_GET_RECORD_TYPE,
+					sizeof(thdr->type), &thdr->type);
+
+			if (cerr && thdr->type != TLS_RECORD_TYPE_DATA) {
+				copied = -EIO;
+				break;
+			}
+			/*  don't send tls header, skip copy */
+			goto skip_copy;
+		}
+
+		if (skb_copy_datagram_msg(skb, offset, msg, avail)) {
+			if (!copied) {
+				copied = -EFAULT;
+				break;
+			}
+		}
+
+		copied += avail;
+		len -= avail;
+		hws->copied_seq += avail;
+skip_copy:
+		if (tp->urg_data && after(tp->copied_seq, tp->urg_seq))
+			tp->urg_data = 0;
+
+		if ((avail + offset) >= skb->len) {
+			struct sk_buff *next_skb;
+			if (ULP_SKB_CB(skb)->flags & ULPCB_FLAG_TLS_HDR) {
+				tp->copied_seq += skb->len;
+				hws->rcvpld = skb->hdr_len;
+			} else {
+				atomic_inc(&adap->chcr_stats.tls_pdu_rx);
+				tp->copied_seq += hws->rcvpld;
+			}
+			chtls_free_skb(sk, skb);
+			buffers_freed++;
+			hws->copied_seq = 0;
+			next_skb = skb_peek(&sk->sk_receive_queue);
+			if (copied >= target && !next_skb)
+				break;
+			if (ULP_SKB_CB(next_skb)->flags & ULPCB_FLAG_TLS_HDR)
+				break;
+		}
+	} while (len > 0);
+
+	if (buffers_freed)
+		chtls_cleanup_rbuf(sk, copied);
+
+unlock:
+	release_sock(sk);
+	return copied;
+}
+
+/*
+ * Peek at data in a socket's receive buffer.
+ */
+static int peekmsg(struct sock *sk, struct msghdr *msg,
+		   size_t len, int flags)
+{
+	struct tcp_sock *tp = tcp_sk(sk);
+	u32 peek_seq, offset;
+	struct sk_buff *skb;
+	int copied = 0;
+	size_t avail;          /* amount of available data in current skb */
+	long timeo;
+	int ret;
+
+	lock_sock(sk);
+	timeo = sock_rcvtimeo(sk, flags & MSG_DONTWAIT);
+	peek_seq = tp->copied_seq;
+
+	do {
+		if (unlikely(tp->urg_data && tp->urg_seq == peek_seq)) {
+			if (copied)
+				break;
+			if (signal_pending(current)) {
+				copied = timeo ? sock_intr_errno(timeo) :
+				-EAGAIN;
+				break;
+			}
+		}
+
+		skb_queue_walk(&sk->sk_receive_queue, skb) {
+			offset = peek_seq - ULP_SKB_CB(skb)->seq;
+			if (offset < skb->len)
+				goto found_ok_skb;
+		}
+
+		/* empty receive queue */
+		if (copied)
+			break;
+		if (sock_flag(sk, SOCK_DONE))
+			break;
+		if (sk->sk_err) {
+			copied = sock_error(sk);
+			break;
+		}
+		if (sk->sk_shutdown & RCV_SHUTDOWN)
+			break;
+		if (sk->sk_state == TCP_CLOSE) {
+			copied = -ENOTCONN;
+			break;
+		}
+		if (!timeo) {
+			copied = -EAGAIN;
+			break;
+		}
+		if (signal_pending(current)) {
+			copied = sock_intr_errno(timeo);
+			break;
+		}
+
+		if (READ_ONCE(sk->sk_backlog.tail)) {
+			/* Do not sleep, just process backlog. */
+			release_sock(sk);
+			lock_sock(sk);
+		} else {
+			ret = sk_wait_data(sk, &timeo, NULL);
+			if (ret < 0) {
+				/* here 'copied' is 0 due to previous checks */
+				copied = ret;
+				break;
+			}
+		}
+
+		if (unlikely(peek_seq != tp->copied_seq)) {
+			if (net_ratelimit())
+				pr_info("TCP(%s:%d), race in MSG_PEEK.\n",
+					current->comm, current->pid);
+			peek_seq = tp->copied_seq;
+		}
+		continue;
+
+found_ok_skb:
+		avail = skb->len - offset;
+		if (len < avail)
+			avail = len;
+		/*
+		 * Do we have urgent data here?  We need to skip over the
+		 * urgent byte.
+		 */
+		if (unlikely(tp->urg_data)) {
+			u32 urg_offset = tp->urg_seq - peek_seq;
+
+			if (urg_offset < avail) {
+				/*
+				 * The amount of data we are preparing to copy
+				 * contains urgent data.
+				 */
+				if (!urg_offset) { /* First byte is urgent */
+					if (!sock_flag(sk, SOCK_URGINLINE)) {
+						peek_seq++;
+						offset++;
+						avail--;
+					}
+					if (!avail)
+						continue;
+				} else {
+					/* stop short of the urgent data */
+					avail = urg_offset;
+				}
+			}
+		}
+
+		/*
+		 * If MSG_TRUNC is specified the data is discarded.
+		 */
+		if (likely(!(flags & MSG_TRUNC)))
+			if (skb_copy_datagram_msg(skb, offset, msg, len)) {
+				if (!copied) {
+					copied = -EFAULT;
+					break;
+				}
+			}
+		peek_seq += avail;
+		copied += avail;
+		len -= avail;
+	} while (len > 0);
+
+	release_sock(sk);
+	return copied;
+}
+
+int chtls_recvmsg(struct sock *sk, struct msghdr *msg, size_t len,
+		  int flags, int *addr_len)
+{
+	struct tcp_sock *tp = tcp_sk(sk);
+	struct chtls_sock *csk;
+	unsigned long avail;    /* amount of available data in current skb */
+	int buffers_freed;
+	int copied = 0;
+	long timeo;
+	int target;             /* Read at least this many bytes */
+	int ret;
+
+	buffers_freed = 0;
+
+	if (unlikely(flags & MSG_OOB))
+		return tcp_prot.recvmsg(sk, msg, len, flags, addr_len);
+
+	if (unlikely(flags & MSG_PEEK))
+		return peekmsg(sk, msg, len, flags);
+
+	if (sk_can_busy_loop(sk) &&
+	    skb_queue_empty_lockless(&sk->sk_receive_queue) &&
+	    sk->sk_state == TCP_ESTABLISHED)
+		sk_busy_loop(sk, flags & MSG_DONTWAIT);
+
+	lock_sock(sk);
+	csk = rcu_dereference_sk_user_data(sk);
+
+	if (is_tls_rx(csk))
+		return chtls_pt_recvmsg(sk, msg, len, flags, addr_len);
+
+	timeo = sock_rcvtimeo(sk, flags & MSG_DONTWAIT);
+	target = sock_rcvlowat(sk, flags & MSG_WAITALL, len);
+
+	if (unlikely(csk_flag(sk, CSK_UPDATE_RCV_WND)))
+		chtls_cleanup_rbuf(sk, copied);
+
+	do {
+		struct sk_buff *skb;
+		u32 offset;
+
+		if (unlikely(tp->urg_data && tp->urg_seq == tp->copied_seq)) {
+			if (copied)
+				break;
+			if (signal_pending(current)) {
+				copied = timeo ? sock_intr_errno(timeo) :
+					-EAGAIN;
+				break;
+			}
+		}
+
+		skb = skb_peek(&sk->sk_receive_queue);
+		if (skb)
+			goto found_ok_skb;
+
+		if (csk->wr_credits &&
+		    skb_queue_len(&csk->txq) &&
+		    chtls_push_frames(csk, csk->wr_credits ==
+				      csk->wr_max_credits))
+			sk->sk_write_space(sk);
+
+		if (copied >= target && !READ_ONCE(sk->sk_backlog.tail))
+			break;
+
+		if (copied) {
+			if (sk->sk_err || sk->sk_state == TCP_CLOSE ||
+			    (sk->sk_shutdown & RCV_SHUTDOWN) ||
+			    signal_pending(current))
+				break;
+		} else {
+			if (sock_flag(sk, SOCK_DONE))
+				break;
+			if (sk->sk_err) {
+				copied = sock_error(sk);
+				break;
+			}
+			if (sk->sk_shutdown & RCV_SHUTDOWN)
+				break;
+			if (sk->sk_state == TCP_CLOSE) {
+				copied = -ENOTCONN;
+				break;
+			}
+			if (!timeo) {
+				copied = -EAGAIN;
+				break;
+			}
+			if (signal_pending(current)) {
+				copied = sock_intr_errno(timeo);
+				break;
+			}
+		}
+
+		if (READ_ONCE(sk->sk_backlog.tail)) {
+			release_sock(sk);
+			lock_sock(sk);
+			chtls_cleanup_rbuf(sk, copied);
+			continue;
+		}
+
+		if (copied >= target)
+			break;
+		chtls_cleanup_rbuf(sk, copied);
+		ret = sk_wait_data(sk, &timeo, NULL);
+		if (ret < 0) {
+			copied = copied ? : ret;
+			goto unlock;
+		}
+		continue;
+
+found_ok_skb:
+		if (!skb->len) {
+			chtls_kfree_skb(sk, skb);
+			if (!copied && !timeo) {
+				copied = -EAGAIN;
+				break;
+			}
+
+			if (copied < target)
+				continue;
+
+			break;
+		}
+
+		offset = tp->copied_seq - ULP_SKB_CB(skb)->seq;
+		avail = skb->len - offset;
+		if (len < avail)
+			avail = len;
+
+		if (unlikely(tp->urg_data)) {
+			u32 urg_offset = tp->urg_seq - tp->copied_seq;
+
+			if (urg_offset < avail) {
+				if (urg_offset) {
+					avail = urg_offset;
+				} else if (!sock_flag(sk, SOCK_URGINLINE)) {
+					tp->copied_seq++;
+					offset++;
+					avail--;
+					if (!avail)
+						goto skip_copy;
+				}
+			}
+		}
+
+		if (likely(!(flags & MSG_TRUNC))) {
+			if (skb_copy_datagram_msg(skb, offset,
+						  msg, avail)) {
+				if (!copied) {
+					copied = -EFAULT;
+					break;
+				}
+			}
+		}
+
+		tp->copied_seq += avail;
+		copied += avail;
+		len -= avail;
+
+skip_copy:
+		if (tp->urg_data && after(tp->copied_seq, tp->urg_seq))
+			tp->urg_data = 0;
+
+		if (avail + offset >= skb->len) {
+			chtls_free_skb(sk, skb);
+			buffers_freed++;
+
+			if  (copied >= target &&
+			     !skb_peek(&sk->sk_receive_queue))
+				break;
+		}
+	} while (len > 0);
+
+	if (buffers_freed)
+		chtls_cleanup_rbuf(sk, copied);
+
+unlock:
+	release_sock(sk);
+	return copied;
+}
diff --git a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_main.c b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_main.c
new file mode 100644
index 000000000..1e55b12fe
--- /dev/null
+++ b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_main.c
@@ -0,0 +1,641 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2018 Chelsio Communications, Inc.
+ *
+ * Written by: Atul Gupta (atul.gupta@chelsio.com)
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/skbuff.h>
+#include <linux/socket.h>
+#include <linux/hash.h>
+#include <linux/in.h>
+#include <linux/net.h>
+#include <linux/ip.h>
+#include <linux/tcp.h>
+#include <net/ipv6.h>
+#include <net/transp_v6.h>
+#include <net/tcp.h>
+#include <net/tls.h>
+
+#include "chtls.h"
+#include "chtls_cm.h"
+
+#define DRV_NAME "chtls"
+
+/*
+ * chtls device management
+ * maintains a list of the chtls devices
+ */
+static LIST_HEAD(cdev_list);
+static DEFINE_MUTEX(cdev_mutex);
+
+static DEFINE_MUTEX(notify_mutex);
+static RAW_NOTIFIER_HEAD(listen_notify_list);
+static struct proto chtls_cpl_prot, chtls_cpl_protv6;
+struct request_sock_ops chtls_rsk_ops, chtls_rsk_opsv6;
+static uint send_page_order = (14 - PAGE_SHIFT < 0) ? 0 : 14 - PAGE_SHIFT;
+
+static void register_listen_notifier(struct notifier_block *nb)
+{
+	mutex_lock(&notify_mutex);
+	raw_notifier_chain_register(&listen_notify_list, nb);
+	mutex_unlock(&notify_mutex);
+}
+
+static void unregister_listen_notifier(struct notifier_block *nb)
+{
+	mutex_lock(&notify_mutex);
+	raw_notifier_chain_unregister(&listen_notify_list, nb);
+	mutex_unlock(&notify_mutex);
+}
+
+static int listen_notify_handler(struct notifier_block *this,
+				 unsigned long event, void *data)
+{
+	struct chtls_listen *clisten;
+	int ret = NOTIFY_DONE;
+
+	clisten = (struct chtls_listen *)data;
+
+	switch (event) {
+	case CHTLS_LISTEN_START:
+		ret = chtls_listen_start(clisten->cdev, clisten->sk);
+		kfree(clisten);
+		break;
+	case CHTLS_LISTEN_STOP:
+		chtls_listen_stop(clisten->cdev, clisten->sk);
+		kfree(clisten);
+		break;
+	}
+	return ret;
+}
+
+static struct notifier_block listen_notifier = {
+	.notifier_call = listen_notify_handler
+};
+
+static int listen_backlog_rcv(struct sock *sk, struct sk_buff *skb)
+{
+	if (likely(skb_transport_header(skb) != skb_network_header(skb)))
+		return tcp_v4_do_rcv(sk, skb);
+	BLOG_SKB_CB(skb)->backlog_rcv(sk, skb);
+	return 0;
+}
+
+static int chtls_start_listen(struct chtls_dev *cdev, struct sock *sk)
+{
+	struct chtls_listen *clisten;
+
+	if (sk->sk_protocol != IPPROTO_TCP)
+		return -EPROTONOSUPPORT;
+
+	if (sk->sk_family == PF_INET &&
+	    LOOPBACK(inet_sk(sk)->inet_rcv_saddr))
+		return -EADDRNOTAVAIL;
+
+	sk->sk_backlog_rcv = listen_backlog_rcv;
+	clisten = kmalloc(sizeof(*clisten), GFP_KERNEL);
+	if (!clisten)
+		return -ENOMEM;
+	clisten->cdev = cdev;
+	clisten->sk = sk;
+	mutex_lock(&notify_mutex);
+	raw_notifier_call_chain(&listen_notify_list,
+				      CHTLS_LISTEN_START, clisten);
+	mutex_unlock(&notify_mutex);
+	return 0;
+}
+
+static void chtls_stop_listen(struct chtls_dev *cdev, struct sock *sk)
+{
+	struct chtls_listen *clisten;
+
+	if (sk->sk_protocol != IPPROTO_TCP)
+		return;
+
+	clisten = kmalloc(sizeof(*clisten), GFP_KERNEL);
+	if (!clisten)
+		return;
+	clisten->cdev = cdev;
+	clisten->sk = sk;
+	mutex_lock(&notify_mutex);
+	raw_notifier_call_chain(&listen_notify_list,
+				CHTLS_LISTEN_STOP, clisten);
+	mutex_unlock(&notify_mutex);
+}
+
+static int chtls_inline_feature(struct tls_toe_device *dev)
+{
+	struct net_device *netdev;
+	struct chtls_dev *cdev;
+	int i;
+
+	cdev = to_chtls_dev(dev);
+
+	for (i = 0; i < cdev->lldi->nports; i++) {
+		netdev = cdev->ports[i];
+		if (netdev->features & NETIF_F_HW_TLS_RECORD)
+			return 1;
+	}
+	return 0;
+}
+
+static int chtls_create_hash(struct tls_toe_device *dev, struct sock *sk)
+{
+	struct chtls_dev *cdev = to_chtls_dev(dev);
+
+	if (sk->sk_state == TCP_LISTEN)
+		return chtls_start_listen(cdev, sk);
+	return 0;
+}
+
+static void chtls_destroy_hash(struct tls_toe_device *dev, struct sock *sk)
+{
+	struct chtls_dev *cdev = to_chtls_dev(dev);
+
+	if (sk->sk_state == TCP_LISTEN)
+		chtls_stop_listen(cdev, sk);
+}
+
+static void chtls_free_uld(struct chtls_dev *cdev)
+{
+	int i;
+
+	tls_toe_unregister_device(&cdev->tlsdev);
+	kvfree(cdev->kmap.addr);
+	idr_destroy(&cdev->hwtid_idr);
+	for (i = 0; i < (1 << RSPQ_HASH_BITS); i++)
+		kfree_skb(cdev->rspq_skb_cache[i]);
+	kfree(cdev->lldi);
+	kfree_skb(cdev->askb);
+	kfree(cdev);
+}
+
+static inline void chtls_dev_release(struct kref *kref)
+{
+	struct tls_toe_device *dev;
+	struct chtls_dev *cdev;
+	struct adapter *adap;
+
+	dev = container_of(kref, struct tls_toe_device, kref);
+	cdev = to_chtls_dev(dev);
+
+	/* Reset tls rx/tx stats */
+	adap = pci_get_drvdata(cdev->pdev);
+	atomic_set(&adap->chcr_stats.tls_pdu_tx, 0);
+	atomic_set(&adap->chcr_stats.tls_pdu_rx, 0);
+
+	chtls_free_uld(cdev);
+}
+
+static void chtls_register_dev(struct chtls_dev *cdev)
+{
+	struct tls_toe_device *tlsdev = &cdev->tlsdev;
+
+	strscpy(tlsdev->name, "chtls", TLS_TOE_DEVICE_NAME_MAX);
+	strlcat(tlsdev->name, cdev->lldi->ports[0]->name,
+		TLS_TOE_DEVICE_NAME_MAX);
+	tlsdev->feature = chtls_inline_feature;
+	tlsdev->hash = chtls_create_hash;
+	tlsdev->unhash = chtls_destroy_hash;
+	tlsdev->release = chtls_dev_release;
+	kref_init(&tlsdev->kref);
+	tls_toe_register_device(tlsdev);
+	cdev->cdev_state = CHTLS_CDEV_STATE_UP;
+}
+
+static void process_deferq(struct work_struct *task_param)
+{
+	struct chtls_dev *cdev = container_of(task_param,
+				struct chtls_dev, deferq_task);
+	struct sk_buff *skb;
+
+	spin_lock_bh(&cdev->deferq.lock);
+	while ((skb = __skb_dequeue(&cdev->deferq)) != NULL) {
+		spin_unlock_bh(&cdev->deferq.lock);
+		DEFERRED_SKB_CB(skb)->handler(cdev, skb);
+		spin_lock_bh(&cdev->deferq.lock);
+	}
+	spin_unlock_bh(&cdev->deferq.lock);
+}
+
+static int chtls_get_skb(struct chtls_dev *cdev)
+{
+	cdev->askb = alloc_skb(sizeof(struct tcphdr), GFP_KERNEL);
+	if (!cdev->askb)
+		return -ENOMEM;
+
+	skb_put(cdev->askb, sizeof(struct tcphdr));
+	skb_reset_transport_header(cdev->askb);
+	memset(cdev->askb->data, 0, cdev->askb->len);
+	return 0;
+}
+
+static void *chtls_uld_add(const struct cxgb4_lld_info *info)
+{
+	struct cxgb4_lld_info *lldi;
+	struct chtls_dev *cdev;
+	int i, j;
+
+	cdev = kzalloc(sizeof(*cdev), GFP_KERNEL);
+	if (!cdev)
+		goto out;
+
+	lldi = kzalloc(sizeof(*lldi), GFP_KERNEL);
+	if (!lldi)
+		goto out_lldi;
+
+	if (chtls_get_skb(cdev))
+		goto out_skb;
+
+	*lldi = *info;
+	cdev->lldi = lldi;
+	cdev->pdev = lldi->pdev;
+	cdev->tids = lldi->tids;
+	cdev->ports = lldi->ports;
+	cdev->mtus = lldi->mtus;
+	cdev->tids = lldi->tids;
+	cdev->pfvf = FW_VIID_PFN_G(cxgb4_port_viid(lldi->ports[0]))
+			<< FW_VIID_PFN_S;
+
+	for (i = 0; i < (1 << RSPQ_HASH_BITS); i++) {
+		unsigned int size = 64 - sizeof(struct rsp_ctrl) - 8;
+
+		cdev->rspq_skb_cache[i] = __alloc_skb(size,
+						      gfp_any(), 0,
+						      lldi->nodeid);
+		if (unlikely(!cdev->rspq_skb_cache[i]))
+			goto out_rspq_skb;
+	}
+
+	idr_init(&cdev->hwtid_idr);
+	INIT_WORK(&cdev->deferq_task, process_deferq);
+	spin_lock_init(&cdev->listen_lock);
+	spin_lock_init(&cdev->idr_lock);
+	cdev->send_page_order = min_t(uint, get_order(32768),
+				      send_page_order);
+	cdev->max_host_sndbuf = 48 * 1024;
+
+	if (lldi->vr->key.size)
+		if (chtls_init_kmap(cdev, lldi))
+			goto out_rspq_skb;
+
+	mutex_lock(&cdev_mutex);
+	list_add_tail(&cdev->list, &cdev_list);
+	mutex_unlock(&cdev_mutex);
+
+	return cdev;
+out_rspq_skb:
+	for (j = 0; j < i; j++)
+		kfree_skb(cdev->rspq_skb_cache[j]);
+	kfree_skb(cdev->askb);
+out_skb:
+	kfree(lldi);
+out_lldi:
+	kfree(cdev);
+out:
+	return NULL;
+}
+
+static void chtls_free_all_uld(void)
+{
+	struct chtls_dev *cdev, *tmp;
+
+	mutex_lock(&cdev_mutex);
+	list_for_each_entry_safe(cdev, tmp, &cdev_list, list) {
+		if (cdev->cdev_state == CHTLS_CDEV_STATE_UP) {
+			list_del(&cdev->list);
+			kref_put(&cdev->tlsdev.kref, cdev->tlsdev.release);
+		}
+	}
+	mutex_unlock(&cdev_mutex);
+}
+
+static int chtls_uld_state_change(void *handle, enum cxgb4_state new_state)
+{
+	struct chtls_dev *cdev = handle;
+
+	switch (new_state) {
+	case CXGB4_STATE_UP:
+		chtls_register_dev(cdev);
+		break;
+	case CXGB4_STATE_DOWN:
+		break;
+	case CXGB4_STATE_START_RECOVERY:
+		break;
+	case CXGB4_STATE_DETACH:
+		mutex_lock(&cdev_mutex);
+		list_del(&cdev->list);
+		mutex_unlock(&cdev_mutex);
+		kref_put(&cdev->tlsdev.kref, cdev->tlsdev.release);
+		break;
+	default:
+		break;
+	}
+	return 0;
+}
+
+static struct sk_buff *copy_gl_to_skb_pkt(const struct pkt_gl *gl,
+					  const __be64 *rsp,
+					  u32 pktshift)
+{
+	struct sk_buff *skb;
+
+	/* Allocate space for cpl_pass_accpet_req which will be synthesized by
+	 * driver. Once driver synthesizes cpl_pass_accpet_req the skb will go
+	 * through the regular cpl_pass_accept_req processing in TOM.
+	 */
+	skb = alloc_skb(gl->tot_len + sizeof(struct cpl_pass_accept_req)
+			- pktshift, GFP_ATOMIC);
+	if (unlikely(!skb))
+		return NULL;
+	__skb_put(skb, gl->tot_len + sizeof(struct cpl_pass_accept_req)
+		   - pktshift);
+	/* For now we will copy  cpl_rx_pkt in the skb */
+	skb_copy_to_linear_data(skb, rsp, sizeof(struct cpl_rx_pkt));
+	skb_copy_to_linear_data_offset(skb, sizeof(struct cpl_pass_accept_req)
+				       , gl->va + pktshift,
+				       gl->tot_len - pktshift);
+
+	return skb;
+}
+
+static int chtls_recv_packet(struct chtls_dev *cdev,
+			     const struct pkt_gl *gl, const __be64 *rsp)
+{
+	unsigned int opcode = *(u8 *)rsp;
+	struct sk_buff *skb;
+	int ret;
+
+	skb = copy_gl_to_skb_pkt(gl, rsp, cdev->lldi->sge_pktshift);
+	if (!skb)
+		return -ENOMEM;
+
+	ret = chtls_handlers[opcode](cdev, skb);
+	if (ret & CPL_RET_BUF_DONE)
+		kfree_skb(skb);
+
+	return 0;
+}
+
+static int chtls_recv_rsp(struct chtls_dev *cdev, const __be64 *rsp)
+{
+	unsigned long rspq_bin;
+	unsigned int opcode;
+	struct sk_buff *skb;
+	unsigned int len;
+	int ret;
+
+	len = 64 - sizeof(struct rsp_ctrl) - 8;
+	opcode = *(u8 *)rsp;
+
+	rspq_bin = hash_ptr((void *)rsp, RSPQ_HASH_BITS);
+	skb = cdev->rspq_skb_cache[rspq_bin];
+	if (skb && !skb_is_nonlinear(skb) &&
+	    !skb_shared(skb) && !skb_cloned(skb)) {
+		refcount_inc(&skb->users);
+		if (refcount_read(&skb->users) == 2) {
+			__skb_trim(skb, 0);
+			if (skb_tailroom(skb) >= len)
+				goto copy_out;
+		}
+		refcount_dec(&skb->users);
+	}
+	skb = alloc_skb(len, GFP_ATOMIC);
+	if (unlikely(!skb))
+		return -ENOMEM;
+
+copy_out:
+	__skb_put(skb, len);
+	skb_copy_to_linear_data(skb, rsp, len);
+	skb_reset_network_header(skb);
+	skb_reset_transport_header(skb);
+	ret = chtls_handlers[opcode](cdev, skb);
+
+	if (ret & CPL_RET_BUF_DONE)
+		kfree_skb(skb);
+	return 0;
+}
+
+static void chtls_recv(struct chtls_dev *cdev,
+		       struct sk_buff **skbs, const __be64 *rsp)
+{
+	struct sk_buff *skb = *skbs;
+	unsigned int opcode;
+	int ret;
+
+	opcode = *(u8 *)rsp;
+
+	__skb_push(skb, sizeof(struct rss_header));
+	skb_copy_to_linear_data(skb, rsp, sizeof(struct rss_header));
+
+	ret = chtls_handlers[opcode](cdev, skb);
+	if (ret & CPL_RET_BUF_DONE)
+		kfree_skb(skb);
+}
+
+static int chtls_uld_rx_handler(void *handle, const __be64 *rsp,
+				const struct pkt_gl *gl)
+{
+	struct chtls_dev *cdev = handle;
+	unsigned int opcode;
+	struct sk_buff *skb;
+
+	opcode = *(u8 *)rsp;
+
+	if (unlikely(opcode == CPL_RX_PKT)) {
+		if (chtls_recv_packet(cdev, gl, rsp) < 0)
+			goto nomem;
+		return 0;
+	}
+
+	if (!gl)
+		return chtls_recv_rsp(cdev, rsp);
+
+#define RX_PULL_LEN 128
+	skb = cxgb4_pktgl_to_skb(gl, RX_PULL_LEN, RX_PULL_LEN);
+	if (unlikely(!skb))
+		goto nomem;
+	chtls_recv(cdev, &skb, rsp);
+	return 0;
+
+nomem:
+	return -ENOMEM;
+}
+
+static int do_chtls_getsockopt(struct sock *sk, char __user *optval,
+			       int __user *optlen)
+{
+	struct tls_crypto_info crypto_info = { 0 };
+
+	crypto_info.version = TLS_1_2_VERSION;
+	if (copy_to_user(optval, &crypto_info, sizeof(struct tls_crypto_info)))
+		return -EFAULT;
+	return 0;
+}
+
+static int chtls_getsockopt(struct sock *sk, int level, int optname,
+			    char __user *optval, int __user *optlen)
+{
+	struct tls_context *ctx = tls_get_ctx(sk);
+
+	if (level != SOL_TLS)
+		return ctx->sk_proto->getsockopt(sk, level,
+						 optname, optval, optlen);
+
+	return do_chtls_getsockopt(sk, optval, optlen);
+}
+
+static int do_chtls_setsockopt(struct sock *sk, int optname,
+			       sockptr_t optval, unsigned int optlen)
+{
+	struct tls_crypto_info *crypto_info, tmp_crypto_info;
+	struct chtls_sock *csk;
+	int keylen;
+	int cipher_type;
+	int rc = 0;
+
+	csk = rcu_dereference_sk_user_data(sk);
+
+	if (sockptr_is_null(optval) || optlen < sizeof(*crypto_info)) {
+		rc = -EINVAL;
+		goto out;
+	}
+
+	rc = copy_from_sockptr(&tmp_crypto_info, optval, sizeof(*crypto_info));
+	if (rc) {
+		rc = -EFAULT;
+		goto out;
+	}
+
+	/* check version */
+	if (tmp_crypto_info.version != TLS_1_2_VERSION) {
+		rc = -ENOTSUPP;
+		goto out;
+	}
+
+	crypto_info = (struct tls_crypto_info *)&csk->tlshws.crypto_info;
+
+	/* GCM mode of AES supports 128 and 256 bit encryption, so
+	 * copy keys from user based on GCM cipher type.
+	 */
+	switch (tmp_crypto_info.cipher_type) {
+	case TLS_CIPHER_AES_GCM_128: {
+		/* Obtain version and type from previous copy */
+		crypto_info[0] = tmp_crypto_info;
+		/* Now copy the following data */
+		rc = copy_from_sockptr_offset((char *)crypto_info +
+				sizeof(*crypto_info),
+				optval, sizeof(*crypto_info),
+				sizeof(struct tls12_crypto_info_aes_gcm_128)
+				- sizeof(*crypto_info));
+
+		if (rc) {
+			rc = -EFAULT;
+			goto out;
+		}
+
+		keylen = TLS_CIPHER_AES_GCM_128_KEY_SIZE;
+		cipher_type = TLS_CIPHER_AES_GCM_128;
+		break;
+	}
+	case TLS_CIPHER_AES_GCM_256: {
+		crypto_info[0] = tmp_crypto_info;
+		rc = copy_from_sockptr_offset((char *)crypto_info +
+				sizeof(*crypto_info),
+				optval, sizeof(*crypto_info),
+				sizeof(struct tls12_crypto_info_aes_gcm_256)
+				- sizeof(*crypto_info));
+
+		if (rc) {
+			rc = -EFAULT;
+			goto out;
+		}
+
+		keylen = TLS_CIPHER_AES_GCM_256_KEY_SIZE;
+		cipher_type = TLS_CIPHER_AES_GCM_256;
+		break;
+	}
+	default:
+		rc = -EINVAL;
+		goto out;
+	}
+	rc = chtls_setkey(csk, keylen, optname, cipher_type);
+out:
+	return rc;
+}
+
+static int chtls_setsockopt(struct sock *sk, int level, int optname,
+			    sockptr_t optval, unsigned int optlen)
+{
+	struct tls_context *ctx = tls_get_ctx(sk);
+
+	if (level != SOL_TLS)
+		return ctx->sk_proto->setsockopt(sk, level,
+						 optname, optval, optlen);
+
+	return do_chtls_setsockopt(sk, optname, optval, optlen);
+}
+
+static struct cxgb4_uld_info chtls_uld_info = {
+	.name = DRV_NAME,
+	.nrxq = MAX_ULD_QSETS,
+	.ntxq = MAX_ULD_QSETS,
+	.rxq_size = 1024,
+	.add = chtls_uld_add,
+	.state_change = chtls_uld_state_change,
+	.rx_handler = chtls_uld_rx_handler,
+};
+
+void chtls_install_cpl_ops(struct sock *sk)
+{
+	if (sk->sk_family == AF_INET)
+		sk->sk_prot = &chtls_cpl_prot;
+	else
+		sk->sk_prot = &chtls_cpl_protv6;
+}
+
+static void __init chtls_init_ulp_ops(void)
+{
+	chtls_cpl_prot			= tcp_prot;
+	chtls_init_rsk_ops(&chtls_cpl_prot, &chtls_rsk_ops,
+			   &tcp_prot, PF_INET);
+	chtls_cpl_prot.close		= chtls_close;
+	chtls_cpl_prot.disconnect	= chtls_disconnect;
+	chtls_cpl_prot.destroy		= chtls_destroy_sock;
+	chtls_cpl_prot.shutdown		= chtls_shutdown;
+	chtls_cpl_prot.sendmsg		= chtls_sendmsg;
+	chtls_cpl_prot.sendpage		= chtls_sendpage;
+	chtls_cpl_prot.recvmsg		= chtls_recvmsg;
+	chtls_cpl_prot.setsockopt	= chtls_setsockopt;
+	chtls_cpl_prot.getsockopt	= chtls_getsockopt;
+#if IS_ENABLED(CONFIG_IPV6)
+	chtls_cpl_protv6		= chtls_cpl_prot;
+	chtls_init_rsk_ops(&chtls_cpl_protv6, &chtls_rsk_opsv6,
+			   &tcpv6_prot, PF_INET6);
+#endif
+}
+
+static int __init chtls_register(void)
+{
+	chtls_init_ulp_ops();
+	register_listen_notifier(&listen_notifier);
+	cxgb4_register_uld(CXGB4_ULD_TLS, &chtls_uld_info);
+	return 0;
+}
+
+static void __exit chtls_unregister(void)
+{
+	unregister_listen_notifier(&listen_notifier);
+	chtls_free_all_uld();
+	cxgb4_unregister_uld(CXGB4_ULD_TLS);
+}
+
+module_init(chtls_register);
+module_exit(chtls_unregister);
+
+MODULE_DESCRIPTION("Chelsio TLS Inline driver");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Chelsio Communications");
+MODULE_VERSION(CHTLS_DRV_VERSION);