From 59dd45d550c518a2c297b2888f194633cb8e5700 Mon Sep 17 00:00:00 2001
From: Sebastian Basierski <sebastianx.basierski@intel.com>
Date: Tue, 31 Jul 2018 18:04:10 +0200
Subject: [PATCH 01/13] ixgbe: firmware recovery mode

Add check for FW NVM recovery mode during driver initialization and
service task. If in recovery mode, log message and unregister device

Signed-off-by: Sebastian Basierski <sebastianx.basierski@intel.com>
Tested-by: Don Buchholz <donald.buchholz@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 .../net/ethernet/intel/ixgbe/ixgbe_common.c   | 11 +++++
 drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 41 +++++++++++++++++++
 drivers/net/ethernet/intel/ixgbe/ixgbe_type.h |  4 ++
 drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c | 15 +++++++
 4 files changed, 71 insertions(+)

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c
index 0bd1294ba5173..970f71d5da04b 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c
@@ -3484,6 +3484,17 @@ void ixgbe_set_vlan_anti_spoofing(struct ixgbe_hw *hw, bool enable, int vf)
 	IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), pfvfspoof);
 }
 
+/**
+ * ixgbe_fw_recovery_mode - Check if in FW NVM recovery mode
+ * @hw: pointer to hardware structure
+ */
+bool ixgbe_fw_recovery_mode(struct ixgbe_hw *hw)
+{
+	if (hw->mac.ops.fw_recovery_mode)
+		return hw->mac.ops.fw_recovery_mode(hw);
+	return false;
+}
+
 /**
  *  ixgbe_get_device_caps_generic - Get additional device capabilities
  *  @hw: pointer to hardware structure
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index 9a23d33a47ed5..604282f03d236 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -7774,6 +7774,33 @@ static void ixgbe_reset_subtask(struct ixgbe_adapter *adapter)
 	rtnl_unlock();
 }
 
+/**
+ * ixgbe_check_fw_error - Check firmware for errors
+ * @adapter: the adapter private structure
+ *
+ * Check firmware errors in register FWSM
+ */
+static bool ixgbe_check_fw_error(struct ixgbe_adapter *adapter)
+{
+	struct ixgbe_hw *hw = &adapter->hw;
+	u32 fwsm;
+
+	/* read fwsm.ext_err_ind register and log errors */
+	fwsm = IXGBE_READ_REG(hw, IXGBE_FWSM(hw));
+
+	if (fwsm & IXGBE_FWSM_EXT_ERR_IND_MASK ||
+	    !(fwsm & IXGBE_FWSM_FW_VAL_BIT))
+		e_dev_warn("Warning firmware error detected FWSM: 0x%08X\n",
+			   fwsm);
+
+	if (hw->mac.ops.fw_recovery_mode && hw->mac.ops.fw_recovery_mode(hw)) {
+		e_dev_err("Firmware recovery mode detected. Limiting functionality. Refer to the Intel(R) Ethernet Adapters and Devices User Guide for details on firmware recovery mode.\n");
+		return true;
+	}
+
+	return false;
+}
+
 /**
  * ixgbe_service_task - manages and runs subtasks
  * @work: pointer to work_struct containing our data
@@ -7792,6 +7819,15 @@ static void ixgbe_service_task(struct work_struct *work)
 		ixgbe_service_event_complete(adapter);
 		return;
 	}
+	if (ixgbe_check_fw_error(adapter)) {
+		if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
+			rtnl_lock();
+			unregister_netdev(adapter->netdev);
+			rtnl_unlock();
+		}
+		ixgbe_service_event_complete(adapter);
+		return;
+	}
 	if (adapter->flags2 & IXGBE_FLAG2_UDP_TUN_REREG_NEEDED) {
 		rtnl_lock();
 		adapter->flags2 &= ~IXGBE_FLAG2_UDP_TUN_REREG_NEEDED;
@@ -10716,6 +10752,11 @@ static int ixgbe_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)
 		netdev->features |= NETIF_F_LRO;
 
+	if (ixgbe_check_fw_error(adapter)) {
+		err = -EIO;
+		goto err_sw_init;
+	}
+
 	/* make sure the EEPROM is good */
 	if (hw->eeprom.ops.validate_checksum(hw, NULL) < 0) {
 		e_dev_err("The EEPROM Checksum Is Not Valid\n");
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h b/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h
index 41bcbb337e837..84f2dba39e36d 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h
@@ -924,6 +924,9 @@ struct ixgbe_nvm_version {
 /* Firmware Semaphore Register */
 #define IXGBE_FWSM_MODE_MASK	0xE
 #define IXGBE_FWSM_FW_MODE_PT	0x4
+#define IXGBE_FWSM_FW_NVM_RECOVERY_MODE	BIT(5)
+#define IXGBE_FWSM_EXT_ERR_IND_MASK	0x01F80000
+#define IXGBE_FWSM_FW_VAL_BIT	BIT(15)
 
 /* ARC Subsystem registers */
 #define IXGBE_HICR      0x15F00
@@ -3461,6 +3464,7 @@ struct ixgbe_mac_operations {
 			      const char *);
 	s32 (*get_thermal_sensor_data)(struct ixgbe_hw *);
 	s32 (*init_thermal_sensor_thresh)(struct ixgbe_hw *hw);
+	bool (*fw_recovery_mode)(struct ixgbe_hw *hw);
 	void (*disable_rx)(struct ixgbe_hw *hw);
 	void (*enable_rx)(struct ixgbe_hw *hw);
 	void (*set_source_address_pruning)(struct ixgbe_hw *, bool,
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c
index a8148c7126e51..10dbaf4f6e808 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c
@@ -1247,6 +1247,20 @@ static s32 ixgbe_get_bus_info_X550em(struct ixgbe_hw *hw)
 	return 0;
 }
 
+/**
+ * ixgbe_fw_recovery_mode - Check FW NVM recovery mode
+ * @hw: pointer t hardware structure
+ *
+ * Returns true if in FW NVM recovery mode.
+ */
+static bool ixgbe_fw_recovery_mode_X550(struct ixgbe_hw *hw)
+{
+	u32 fwsm;
+
+	fwsm = IXGBE_READ_REG(hw, IXGBE_FWSM(hw));
+	return !!(fwsm & IXGBE_FWSM_FW_NVM_RECOVERY_MODE);
+}
+
 /** ixgbe_disable_rx_x550 - Disable RX unit
  *
  *  Enables the Rx DMA unit for x550
@@ -3816,6 +3830,7 @@ static s32 ixgbe_write_phy_reg_x550a(struct ixgbe_hw *hw, u32 reg_addr,
 	.enable_rx_buff			= &ixgbe_enable_rx_buff_generic, \
 	.get_thermal_sensor_data	= NULL, \
 	.init_thermal_sensor_thresh	= NULL, \
+	.fw_recovery_mode		= &ixgbe_fw_recovery_mode_X550, \
 	.enable_rx			= &ixgbe_enable_rx_generic, \
 	.disable_rx			= &ixgbe_disable_rx_x550, \
 

From 7fb94bd58dd6650a0158e68d414e185077d8b57a Mon Sep 17 00:00:00 2001
From: Sebastian Basierski <sebastianx.basierski@intel.com>
Date: Thu, 9 Aug 2018 11:45:40 +0200
Subject: [PATCH 02/13] ixgbevf: VF2VF TCP RSS

While VF2VF with RSS communication, RSS Type were wrongly recognized
and RSS hash was not calculated as it should be. Packets was
distributed on various queues by accident.
This commit fixes that behaviour and causes proper RSS Type recognition.

Signed-off-by: Sebastian Basierski <sebastianx.basierski@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
index d86446d202d5e..15deac07fd921 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
@@ -3849,6 +3849,10 @@ static void ixgbevf_tx_csum(struct ixgbevf_ring *tx_ring,
 		skb_checksum_help(skb);
 		goto no_csum;
 	}
+
+	if (first->protocol == htons(ETH_P_IP))
+		type_tucmd |= IXGBE_ADVTXD_TUCMD_IPV4;
+
 	/* update TX checksum flag */
 	first->tx_flags |= IXGBE_TX_FLAGS_CSUM;
 	vlan_macip_lens = skb_checksum_start_offset(skb) -

From 9e3f2f5ecee69b0f70003fb3e07639151e91de73 Mon Sep 17 00:00:00 2001
From: Shannon Nelson <shannon.nelson@oracle.com>
Date: Fri, 10 Aug 2018 12:24:10 -0700
Subject: [PATCH 03/13] ixgbe: don't clear IPsec sa counters on HW clearing

The software SA record counters should not be cleared when clearing
the hardware tables.  This causes the counters to be out of sync
after a driver reset.

Fixes: 63a67fe229ea ("ixgbe: add ipsec offload add and remove SA")
Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
index da4322e4daed5..e515246d0bcec 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
@@ -113,7 +113,6 @@ static void ixgbe_ipsec_set_rx_ip(struct ixgbe_hw *hw, u16 idx, __be32 addr[])
  **/
 static void ixgbe_ipsec_clear_hw_tables(struct ixgbe_adapter *adapter)
 {
-	struct ixgbe_ipsec *ipsec = adapter->ipsec;
 	struct ixgbe_hw *hw = &adapter->hw;
 	u32 buf[4] = {0, 0, 0, 0};
 	u16 idx;
@@ -132,9 +131,6 @@ static void ixgbe_ipsec_clear_hw_tables(struct ixgbe_adapter *adapter)
 		ixgbe_ipsec_set_tx_sa(hw, idx, buf, 0);
 		ixgbe_ipsec_set_rx_sa(hw, idx, 0, buf, 0, 0, 0);
 	}
-
-	ipsec->num_rx_sa = 0;
-	ipsec->num_tx_sa = 0;
 }
 
 /**

From b2875fbf6c96ab0f052835be16e00ec403c8c778 Mon Sep 17 00:00:00 2001
From: Shannon Nelson <shannon.nelson@oracle.com>
Date: Mon, 13 Aug 2018 11:43:38 -0700
Subject: [PATCH 04/13] ixgbe: reload IPsec IP table after sa tables

Restore the IPsec hardware IP table after reloading the SA tables.
This doesn't make much difference now, but will matter when we add
support for VF IPsec offloads.

Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
index e515246d0bcec..434065109b8d4 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
@@ -301,14 +301,6 @@ void ixgbe_ipsec_restore(struct ixgbe_adapter *adapter)
 	ixgbe_ipsec_clear_hw_tables(adapter);
 	ixgbe_ipsec_start_engine(adapter);
 
-	/* reload the IP addrs */
-	for (i = 0; i < IXGBE_IPSEC_MAX_RX_IP_COUNT; i++) {
-		struct rx_ip_sa *ipsa = &ipsec->ip_tbl[i];
-
-		if (ipsa->used)
-			ixgbe_ipsec_set_rx_ip(hw, i, ipsa->ipaddr);
-	}
-
 	/* reload the Rx and Tx keys */
 	for (i = 0; i < IXGBE_IPSEC_MAX_SA_COUNT; i++) {
 		struct rx_sa *rsa = &ipsec->rx_tbl[i];
@@ -322,6 +314,14 @@ void ixgbe_ipsec_restore(struct ixgbe_adapter *adapter)
 		if (tsa->used)
 			ixgbe_ipsec_set_tx_sa(hw, i, tsa->key, tsa->salt);
 	}
+
+	/* reload the IP addrs */
+	for (i = 0; i < IXGBE_IPSEC_MAX_RX_IP_COUNT; i++) {
+		struct rx_ip_sa *ipsa = &ipsec->ip_tbl[i];
+
+		if (ipsa->used)
+			ixgbe_ipsec_set_rx_ip(hw, i, ipsa->ipaddr);
+	}
 }
 
 /**

From 99a7b0c14c3078c0eaa1e795fb9bd53330977fa7 Mon Sep 17 00:00:00 2001
From: Shannon Nelson <shannon.nelson@oracle.com>
Date: Mon, 13 Aug 2018 11:43:39 -0700
Subject: [PATCH 05/13] ixgbe: prep IPsec constants for later use

Pull out a couple of values from a function so they can be used
later elsewhere.

Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
index 434065109b8d4..3afb1fe766cd7 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
@@ -5,6 +5,9 @@
 #include <net/xfrm.h>
 #include <crypto/aead.h>
 
+#define IXGBE_IPSEC_KEY_BITS  160
+static const char aes_gcm_name[] = "rfc4106(gcm(aes))";
+
 /**
  * ixgbe_ipsec_set_tx_sa - set the Tx SA registers
  * @hw: hw specific details
@@ -407,7 +410,6 @@ static int ixgbe_ipsec_parse_proto_keys(struct xfrm_state *xs,
 	struct net_device *dev = xs->xso.dev;
 	unsigned char *key_data;
 	char *alg_name = NULL;
-	const char aes_gcm_name[] = "rfc4106(gcm(aes))";
 	int key_len;
 
 	if (!xs->aead) {
@@ -435,9 +437,9 @@ static int ixgbe_ipsec_parse_proto_keys(struct xfrm_state *xs,
 	 * we don't need to do any byteswapping.
 	 * 160 accounts for 16 byte key and 4 byte salt
 	 */
-	if (key_len == 160) {
+	if (key_len == IXGBE_IPSEC_KEY_BITS) {
 		*mysalt = ((u32 *)key_data)[4];
-	} else if (key_len != 128) {
+	} else if (key_len != (IXGBE_IPSEC_KEY_BITS - (sizeof(*mysalt) * 8))) {
 		netdev_err(dev, "IPsec hw offload only supports keys up to 128 bits with a 32 bit salt\n");
 		return -EINVAL;
 	} else {

From eda0333ac29304c5f5cd72d963d5d1e788ce49ab Mon Sep 17 00:00:00 2001
From: Shannon Nelson <shannon.nelson@oracle.com>
Date: Mon, 13 Aug 2018 11:43:40 -0700
Subject: [PATCH 06/13] ixgbe: add VF IPsec management

Add functions to translate VF IPsec offload add and delete requests
into something the existing code can work with.

Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 .../net/ethernet/intel/ixgbe/ixgbe_ipsec.c    | 256 +++++++++++++++++-
 .../net/ethernet/intel/ixgbe/ixgbe_ipsec.h    |  13 +
 2 files changed, 260 insertions(+), 9 deletions(-)

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
index 3afb1fe766cd7..80108e12ab862 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
@@ -8,6 +8,8 @@
 #define IXGBE_IPSEC_KEY_BITS  160
 static const char aes_gcm_name[] = "rfc4106(gcm(aes))";
 
+static void ixgbe_ipsec_del_sa(struct xfrm_state *xs);
+
 /**
  * ixgbe_ipsec_set_tx_sa - set the Tx SA registers
  * @hw: hw specific details
@@ -289,6 +291,13 @@ static void ixgbe_ipsec_start_engine(struct ixgbe_adapter *adapter)
 /**
  * ixgbe_ipsec_restore - restore the ipsec HW settings after a reset
  * @adapter: board private structure
+ *
+ * Reload the HW tables from the SW tables after they've been bashed
+ * by a chip reset.
+ *
+ * Any VF entries are removed from the SW and HW tables since either
+ * (a) the VF also gets reset on PF reset and will ask again for the
+ * offloads, or (b) the VF has been removed by a change in the num_vfs.
  **/
 void ixgbe_ipsec_restore(struct ixgbe_adapter *adapter)
 {
@@ -306,16 +315,24 @@ void ixgbe_ipsec_restore(struct ixgbe_adapter *adapter)
 
 	/* reload the Rx and Tx keys */
 	for (i = 0; i < IXGBE_IPSEC_MAX_SA_COUNT; i++) {
-		struct rx_sa *rsa = &ipsec->rx_tbl[i];
-		struct tx_sa *tsa = &ipsec->tx_tbl[i];
-
-		if (rsa->used)
-			ixgbe_ipsec_set_rx_sa(hw, i, rsa->xs->id.spi,
-					      rsa->key, rsa->salt,
-					      rsa->mode, rsa->iptbl_ind);
+		struct rx_sa *r = &ipsec->rx_tbl[i];
+		struct tx_sa *t = &ipsec->tx_tbl[i];
+
+		if (r->used) {
+			if (r->mode & IXGBE_RXTXMOD_VF)
+				ixgbe_ipsec_del_sa(r->xs);
+			else
+				ixgbe_ipsec_set_rx_sa(hw, i, r->xs->id.spi,
+						      r->key, r->salt,
+						      r->mode, r->iptbl_ind);
+		}
 
-		if (tsa->used)
-			ixgbe_ipsec_set_tx_sa(hw, i, tsa->key, tsa->salt);
+		if (t->used) {
+			if (t->mode & IXGBE_RXTXMOD_VF)
+				ixgbe_ipsec_del_sa(t->xs);
+			else
+				ixgbe_ipsec_set_tx_sa(hw, i, t->key, t->salt);
+		}
 	}
 
 	/* reload the IP addrs */
@@ -381,6 +398,8 @@ static struct xfrm_state *ixgbe_ipsec_find_rx_state(struct ixgbe_ipsec *ipsec,
 	rcu_read_lock();
 	hash_for_each_possible_rcu(ipsec->rx_sa_list, rsa, hlist,
 				   (__force u32)spi) {
+		if (rsa->mode & IXGBE_RXTXMOD_VF)
+			continue;
 		if (spi == rsa->xs->id.spi &&
 		    ((ip4 && *daddr == rsa->xs->id.daddr.a4) ||
 		      (!ip4 && !memcmp(daddr, &rsa->xs->id.daddr.a6,
@@ -808,6 +827,225 @@ static const struct xfrmdev_ops ixgbe_xfrmdev_ops = {
 	.xdo_dev_offload_ok = ixgbe_ipsec_offload_ok,
 };
 
+/**
+ * ixgbe_ipsec_vf_clear - clear the tables of data for a VF
+ * @adapter: board private structure
+ * @vf: VF id to be removed
+ **/
+void ixgbe_ipsec_vf_clear(struct ixgbe_adapter *adapter, u32 vf)
+{
+	struct ixgbe_ipsec *ipsec = adapter->ipsec;
+	int i;
+
+	/* search rx sa table */
+	for (i = 0; i < IXGBE_IPSEC_MAX_SA_COUNT && ipsec->num_rx_sa; i++) {
+		if (!ipsec->rx_tbl[i].used)
+			continue;
+		if (ipsec->rx_tbl[i].mode & IXGBE_RXTXMOD_VF &&
+		    ipsec->rx_tbl[i].vf == vf)
+			ixgbe_ipsec_del_sa(ipsec->rx_tbl[i].xs);
+	}
+
+	/* search tx sa table */
+	for (i = 0; i < IXGBE_IPSEC_MAX_SA_COUNT && ipsec->num_tx_sa; i++) {
+		if (!ipsec->tx_tbl[i].used)
+			continue;
+		if (ipsec->tx_tbl[i].mode & IXGBE_RXTXMOD_VF &&
+		    ipsec->tx_tbl[i].vf == vf)
+			ixgbe_ipsec_del_sa(ipsec->tx_tbl[i].xs);
+	}
+}
+
+/**
+ * ixgbe_ipsec_vf_add_sa - translate VF request to SA add
+ * @adapter: board private structure
+ * @msgbuf: The message buffer
+ * @vf: the VF index
+ *
+ * Make up a new xs and algorithm info from the data sent by the VF.
+ * We only need to sketch in just enough to set up the HW offload.
+ * Put the resulting offload_handle into the return message to the VF.
+ *
+ * Returns 0 or error value
+ **/
+int ixgbe_ipsec_vf_add_sa(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
+{
+	struct ixgbe_ipsec *ipsec = adapter->ipsec;
+	struct xfrm_algo_desc *algo;
+	struct sa_mbx_msg *sam;
+	struct xfrm_state *xs;
+	size_t aead_len;
+	u16 sa_idx;
+	u32 pfsa;
+	int err;
+
+	sam = (struct sa_mbx_msg *)(&msgbuf[1]);
+	if (!adapter->vfinfo[vf].trusted) {
+		e_warn(drv, "VF %d attempted to add an IPsec SA\n", vf);
+		err = -EACCES;
+		goto err_out;
+	}
+
+	/* Tx IPsec offload doesn't seem to work on this
+	 * device, so block these requests for now.
+	 */
+	if (!(sam->flags & XFRM_OFFLOAD_INBOUND)) {
+		err = -ENXIO;
+		goto err_out;
+	}
+
+	xs = kzalloc(sizeof(*xs), GFP_KERNEL);
+	if (unlikely(!xs)) {
+		err = -ENOMEM;
+		goto err_out;
+	}
+
+	xs->xso.flags = sam->flags;
+	xs->id.spi = sam->spi;
+	xs->id.proto = sam->proto;
+	xs->props.family = sam->family;
+	if (xs->props.family == AF_INET6)
+		memcpy(&xs->id.daddr.a6, sam->addr, sizeof(xs->id.daddr.a6));
+	else
+		memcpy(&xs->id.daddr.a4, sam->addr, sizeof(xs->id.daddr.a4));
+	xs->xso.dev = adapter->netdev;
+
+	algo = xfrm_aead_get_byname(aes_gcm_name, IXGBE_IPSEC_AUTH_BITS, 1);
+	if (unlikely(!algo)) {
+		err = -ENOENT;
+		goto err_xs;
+	}
+
+	aead_len = sizeof(*xs->aead) + IXGBE_IPSEC_KEY_BITS / 8;
+	xs->aead = kzalloc(aead_len, GFP_KERNEL);
+	if (unlikely(!xs->aead)) {
+		err = -ENOMEM;
+		goto err_xs;
+	}
+
+	xs->props.ealgo = algo->desc.sadb_alg_id;
+	xs->geniv = algo->uinfo.aead.geniv;
+	xs->aead->alg_icv_len = IXGBE_IPSEC_AUTH_BITS;
+	xs->aead->alg_key_len = IXGBE_IPSEC_KEY_BITS;
+	memcpy(xs->aead->alg_key, sam->key, sizeof(sam->key));
+	memcpy(xs->aead->alg_name, aes_gcm_name, sizeof(aes_gcm_name));
+
+	/* set up the HW offload */
+	err = ixgbe_ipsec_add_sa(xs);
+	if (err)
+		goto err_aead;
+
+	pfsa = xs->xso.offload_handle;
+	if (pfsa < IXGBE_IPSEC_BASE_TX_INDEX) {
+		sa_idx = pfsa - IXGBE_IPSEC_BASE_RX_INDEX;
+		ipsec->rx_tbl[sa_idx].vf = vf;
+		ipsec->rx_tbl[sa_idx].mode |= IXGBE_RXTXMOD_VF;
+	} else {
+		sa_idx = pfsa - IXGBE_IPSEC_BASE_TX_INDEX;
+		ipsec->tx_tbl[sa_idx].vf = vf;
+		ipsec->tx_tbl[sa_idx].mode |= IXGBE_RXTXMOD_VF;
+	}
+
+	msgbuf[1] = xs->xso.offload_handle;
+
+	return 0;
+
+err_aead:
+	memset(xs->aead, 0, sizeof(*xs->aead));
+	kfree(xs->aead);
+err_xs:
+	memset(xs, 0, sizeof(*xs));
+	kfree(xs);
+err_out:
+	msgbuf[1] = err;
+	return err;
+}
+
+/**
+ * ixgbe_ipsec_vf_del_sa - translate VF request to SA delete
+ * @adapter: board private structure
+ * @msgbuf: The message buffer
+ * @vf: the VF index
+ *
+ * Given the offload_handle sent by the VF, look for the related SA table
+ * entry and use its xs field to call for a delete of the SA.
+ *
+ * Note: We silently ignore requests to delete entries that are already
+ *       set to unused because when a VF is set to "DOWN", the PF first
+ *       gets a reset and clears all the VF's entries; then the VF's
+ *       XFRM stack sends individual deletes for each entry, which the
+ *       reset already removed.  In the future it might be good to try to
+ *       optimize this so not so many unnecessary delete messages are sent.
+ *
+ * Returns 0 or error value
+ **/
+int ixgbe_ipsec_vf_del_sa(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
+{
+	struct ixgbe_ipsec *ipsec = adapter->ipsec;
+	struct xfrm_state *xs;
+	u32 pfsa = msgbuf[1];
+	u16 sa_idx;
+
+	if (!adapter->vfinfo[vf].trusted) {
+		e_err(drv, "vf %d attempted to delete an SA\n", vf);
+		return -EPERM;
+	}
+
+	if (pfsa < IXGBE_IPSEC_BASE_TX_INDEX) {
+		struct rx_sa *rsa;
+
+		sa_idx = pfsa - IXGBE_IPSEC_BASE_RX_INDEX;
+		if (sa_idx >= IXGBE_IPSEC_MAX_SA_COUNT) {
+			e_err(drv, "vf %d SA index %d out of range\n",
+			      vf, sa_idx);
+			return -EINVAL;
+		}
+
+		rsa = &ipsec->rx_tbl[sa_idx];
+
+		if (!rsa->used)
+			return 0;
+
+		if (!(rsa->mode & IXGBE_RXTXMOD_VF) ||
+		    rsa->vf != vf) {
+			e_err(drv, "vf %d bad Rx SA index %d\n", vf, sa_idx);
+			return -ENOENT;
+		}
+
+		xs = ipsec->rx_tbl[sa_idx].xs;
+	} else {
+		struct tx_sa *tsa;
+
+		sa_idx = pfsa - IXGBE_IPSEC_BASE_TX_INDEX;
+		if (sa_idx >= IXGBE_IPSEC_MAX_SA_COUNT) {
+			e_err(drv, "vf %d SA index %d out of range\n",
+			      vf, sa_idx);
+			return -EINVAL;
+		}
+
+		tsa = &ipsec->tx_tbl[sa_idx];
+
+		if (!tsa->used)
+			return 0;
+
+		if (!(tsa->mode & IXGBE_RXTXMOD_VF) ||
+		    tsa->vf != vf) {
+			e_err(drv, "vf %d bad Tx SA index %d\n", vf, sa_idx);
+			return -ENOENT;
+		}
+
+		xs = ipsec->tx_tbl[sa_idx].xs;
+	}
+
+	ixgbe_ipsec_del_sa(xs);
+
+	/* remove the xs that was made-up in the add request */
+	memset(xs, 0, sizeof(*xs));
+	kfree(xs);
+
+	return 0;
+}
+
 /**
  * ixgbe_ipsec_tx - setup Tx flags for ipsec offload
  * @tx_ring: outgoing context
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.h b/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.h
index 9ef7faadda694..d2b64ff8eb4ef 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.h
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.h
@@ -26,6 +26,7 @@ enum ixgbe_ipsec_tbl_sel {
 #define IXGBE_RXMOD_PROTO_ESP		0x00000004
 #define IXGBE_RXMOD_DECRYPT		0x00000008
 #define IXGBE_RXMOD_IPV6		0x00000010
+#define IXGBE_RXTXMOD_VF		0x00000020
 
 struct rx_sa {
 	struct hlist_node hlist;
@@ -37,6 +38,7 @@ struct rx_sa {
 	u8  iptbl_ind;
 	bool used;
 	bool decrypt;
+	u32 vf;
 };
 
 struct rx_ip_sa {
@@ -49,8 +51,10 @@ struct tx_sa {
 	struct xfrm_state *xs;
 	u32 key[4];
 	u32 salt;
+	u32 mode;
 	bool encrypt;
 	bool used;
+	u32 vf;
 };
 
 struct ixgbe_ipsec_tx_data {
@@ -67,4 +71,13 @@ struct ixgbe_ipsec {
 	struct tx_sa *tx_tbl;
 	DECLARE_HASHTABLE(rx_sa_list, 10);
 };
+
+struct sa_mbx_msg {
+	__be32 spi;
+	u8 flags;
+	u8 proto;
+	u16 family;
+	__be32 addr[4];
+	u32 key[5];
+};
 #endif /* _IXGBE_IPSEC_H_ */

From 9e4e30cc0c41bb5c727851c7028f840d488365ee Mon Sep 17 00:00:00 2001
From: Shannon Nelson <shannon.nelson@oracle.com>
Date: Mon, 13 Aug 2018 11:43:41 -0700
Subject: [PATCH 07/13] ixgbe: add VF IPsec offload enable flag

Add a private flag to expressly enable support for VF IPsec offload.
The VF will have to be "trusted" in order to use the hardware offload,
but because of the general concerns of managing VF access, we want to
be sure the user specifically is enabling the feature.

This is likely a candidate for becoming a netdev feature flag.

Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ixgbe/ixgbe.h         | 1 +
 drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c | 9 +++++++++
 drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c   | 3 ++-
 3 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe.h b/drivers/net/ethernet/intel/ixgbe/ixgbe.h
index 4fc906c6166b3..89e709ce19475 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe.h
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe.h
@@ -605,6 +605,7 @@ struct ixgbe_adapter {
 #define IXGBE_FLAG2_EEE_ENABLED			BIT(15)
 #define IXGBE_FLAG2_RX_LEGACY			BIT(16)
 #define IXGBE_FLAG2_IPSEC_ENABLED		BIT(17)
+#define IXGBE_FLAG2_VF_IPSEC_ENABLED		BIT(18)
 
 	/* Tx fast path data */
 	int num_tx_queues;
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
index e5a8461fe6a99..732b1e6ecc43c 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
@@ -136,6 +136,8 @@ static const char ixgbe_gstrings_test[][ETH_GSTRING_LEN] = {
 static const char ixgbe_priv_flags_strings[][ETH_GSTRING_LEN] = {
 #define IXGBE_PRIV_FLAGS_LEGACY_RX	BIT(0)
 	"legacy-rx",
+#define IXGBE_PRIV_FLAGS_VF_IPSEC_EN	BIT(1)
+	"vf-ipsec",
 };
 
 #define IXGBE_PRIV_FLAGS_STR_LEN ARRAY_SIZE(ixgbe_priv_flags_strings)
@@ -3409,6 +3411,9 @@ static u32 ixgbe_get_priv_flags(struct net_device *netdev)
 	if (adapter->flags2 & IXGBE_FLAG2_RX_LEGACY)
 		priv_flags |= IXGBE_PRIV_FLAGS_LEGACY_RX;
 
+	if (adapter->flags2 & IXGBE_FLAG2_VF_IPSEC_ENABLED)
+		priv_flags |= IXGBE_PRIV_FLAGS_VF_IPSEC_EN;
+
 	return priv_flags;
 }
 
@@ -3421,6 +3426,10 @@ static int ixgbe_set_priv_flags(struct net_device *netdev, u32 priv_flags)
 	if (priv_flags & IXGBE_PRIV_FLAGS_LEGACY_RX)
 		flags2 |= IXGBE_FLAG2_RX_LEGACY;
 
+	flags2 &= ~IXGBE_FLAG2_VF_IPSEC_ENABLED;
+	if (priv_flags & IXGBE_PRIV_FLAGS_VF_IPSEC_EN)
+		flags2 |= IXGBE_FLAG2_VF_IPSEC_ENABLED;
+
 	if (flags2 != adapter->flags2) {
 		adapter->flags2 = flags2;
 
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
index 80108e12ab862..ecd01fade960c 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
@@ -880,7 +880,8 @@ int ixgbe_ipsec_vf_add_sa(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
 	int err;
 
 	sam = (struct sa_mbx_msg *)(&msgbuf[1]);
-	if (!adapter->vfinfo[vf].trusted) {
+	if (!adapter->vfinfo[vf].trusted ||
+	    !(adapter->flags2 & IXGBE_FLAG2_VF_IPSEC_ENABLED)) {
 		e_warn(drv, "VF %d attempted to add an IPsec SA\n", vf);
 		err = -EACCES;
 		goto err_out;

From 72698240463769f68020c61eb71d1aef96458200 Mon Sep 17 00:00:00 2001
From: Shannon Nelson <shannon.nelson@oracle.com>
Date: Mon, 13 Aug 2018 11:43:42 -0700
Subject: [PATCH 08/13] ixgbe: add VF IPsec offload request message handling

Add an add and a delete message for IPsec offload requests from
the VF.  These call into the IPsec functions that can translate
the message buffer into a useful IPsec offload.

These new messages bump the mbox API version to 1.4.

Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ixgbe/ixgbe.h      | 19 ++++++++++++++-----
 drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.h  |  5 +++++
 .../net/ethernet/intel/ixgbe/ixgbe_sriov.c    | 17 ++++++++++++++++-
 3 files changed, 35 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe.h b/drivers/net/ethernet/intel/ixgbe/ixgbe.h
index 89e709ce19475..5c6fd42e90ed7 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe.h
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe.h
@@ -1004,15 +1004,24 @@ void ixgbe_ipsec_rx(struct ixgbe_ring *rx_ring,
 		    struct sk_buff *skb);
 int ixgbe_ipsec_tx(struct ixgbe_ring *tx_ring, struct ixgbe_tx_buffer *first,
 		   struct ixgbe_ipsec_tx_data *itd);
+void ixgbe_ipsec_vf_clear(struct ixgbe_adapter *adapter, u32 vf);
+int ixgbe_ipsec_vf_add_sa(struct ixgbe_adapter *adapter, u32 *mbuf, u32 vf);
+int ixgbe_ipsec_vf_del_sa(struct ixgbe_adapter *adapter, u32 *mbuf, u32 vf);
 #else
-static inline void ixgbe_init_ipsec_offload(struct ixgbe_adapter *adapter) { };
-static inline void ixgbe_stop_ipsec_offload(struct ixgbe_adapter *adapter) { };
-static inline void ixgbe_ipsec_restore(struct ixgbe_adapter *adapter) { };
+static inline void ixgbe_init_ipsec_offload(struct ixgbe_adapter *adapter) { }
+static inline void ixgbe_stop_ipsec_offload(struct ixgbe_adapter *adapter) { }
+static inline void ixgbe_ipsec_restore(struct ixgbe_adapter *adapter) { }
 static inline void ixgbe_ipsec_rx(struct ixgbe_ring *rx_ring,
 				  union ixgbe_adv_rx_desc *rx_desc,
-				  struct sk_buff *skb) { };
+				  struct sk_buff *skb) { }
 static inline int ixgbe_ipsec_tx(struct ixgbe_ring *tx_ring,
 				 struct ixgbe_tx_buffer *first,
-				 struct ixgbe_ipsec_tx_data *itd) { return 0; };
+				 struct ixgbe_ipsec_tx_data *itd) { return 0; }
+static inline void ixgbe_ipsec_vf_clear(struct ixgbe_adapter *adapter,
+					u32 vf) { }
+static inline int ixgbe_ipsec_vf_add_sa(struct ixgbe_adapter *adapter,
+					u32 *mbuf, u32 vf) { return -EACCES; }
+static inline int ixgbe_ipsec_vf_del_sa(struct ixgbe_adapter *adapter,
+					u32 *mbuf, u32 vf) { return -EACCES; }
 #endif /* CONFIG_XFRM_OFFLOAD */
 #endif /* _IXGBE_H_ */
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.h b/drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.h
index e085b6520dac8..a148534d7256d 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.h
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.h
@@ -50,6 +50,7 @@ enum ixgbe_pfvf_api_rev {
 	ixgbe_mbox_api_11,	/* API version 1.1, linux/freebsd VF driver */
 	ixgbe_mbox_api_12,	/* API version 1.2, linux/freebsd VF driver */
 	ixgbe_mbox_api_13,	/* API version 1.3, linux/freebsd VF driver */
+	ixgbe_mbox_api_14,	/* API version 1.4, linux/freebsd VF driver */
 	/* This value should always be last */
 	ixgbe_mbox_api_unknown,	/* indicates that API version is not known */
 };
@@ -80,6 +81,10 @@ enum ixgbe_pfvf_api_rev {
 
 #define IXGBE_VF_UPDATE_XCAST_MODE	0x0c
 
+/* mailbox API, version 1.4 VF requests */
+#define IXGBE_VF_IPSEC_ADD	0x0d
+#define IXGBE_VF_IPSEC_DEL	0x0e
+
 /* length of permanent address message returned from PF */
 #define IXGBE_VF_PERMADDR_MSG_LEN 4
 /* word in permanent address message with the current multicast type */
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
index 3c6f01c41b788..af25a8fffeb8b 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
@@ -496,6 +496,7 @@ static s32 ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
 		case ixgbe_mbox_api_11:
 		case ixgbe_mbox_api_12:
 		case ixgbe_mbox_api_13:
+		case ixgbe_mbox_api_14:
 			/* Version 1.1 supports jumbo frames on VFs if PF has
 			 * jumbo frames enabled which means legacy VFs are
 			 * disabled
@@ -728,6 +729,9 @@ static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf)
 	/* reset multicast table array for vf */
 	adapter->vfinfo[vf].num_vf_mc_hashes = 0;
 
+	/* clear any ipsec table info */
+	ixgbe_ipsec_vf_clear(adapter, vf);
+
 	/* Flush and reset the mta with the new values */
 	ixgbe_set_rx_mode(adapter->netdev);
 
@@ -1000,6 +1004,7 @@ static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter,
 	case ixgbe_mbox_api_11:
 	case ixgbe_mbox_api_12:
 	case ixgbe_mbox_api_13:
+	case ixgbe_mbox_api_14:
 		adapter->vfinfo[vf].vf_api = api;
 		return 0;
 	default:
@@ -1025,6 +1030,7 @@ static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter,
 	case ixgbe_mbox_api_11:
 	case ixgbe_mbox_api_12:
 	case ixgbe_mbox_api_13:
+	case ixgbe_mbox_api_14:
 		break;
 	default:
 		return -1;
@@ -1065,6 +1071,7 @@ static int ixgbe_get_vf_reta(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
 
 	/* verify the PF is supporting the correct API */
 	switch (adapter->vfinfo[vf].vf_api) {
+	case ixgbe_mbox_api_14:
 	case ixgbe_mbox_api_13:
 	case ixgbe_mbox_api_12:
 		break;
@@ -1097,6 +1104,7 @@ static int ixgbe_get_vf_rss_key(struct ixgbe_adapter *adapter,
 
 	/* verify the PF is supporting the correct API */
 	switch (adapter->vfinfo[vf].vf_api) {
+	case ixgbe_mbox_api_14:
 	case ixgbe_mbox_api_13:
 	case ixgbe_mbox_api_12:
 		break;
@@ -1122,8 +1130,9 @@ static int ixgbe_update_vf_xcast_mode(struct ixgbe_adapter *adapter,
 		/* promisc introduced in 1.3 version */
 		if (xcast_mode == IXGBEVF_XCAST_MODE_PROMISC)
 			return -EOPNOTSUPP;
-		/* Fall threw */
+		/* Fall through */
 	case ixgbe_mbox_api_13:
+	case ixgbe_mbox_api_14:
 		break;
 	default:
 		return -EOPNOTSUPP;
@@ -1249,6 +1258,12 @@ static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf)
 	case IXGBE_VF_UPDATE_XCAST_MODE:
 		retval = ixgbe_update_vf_xcast_mode(adapter, msgbuf, vf);
 		break;
+	case IXGBE_VF_IPSEC_ADD:
+		retval = ixgbe_ipsec_vf_add_sa(adapter, msgbuf, vf);
+		break;
+	case IXGBE_VF_IPSEC_DEL:
+		retval = ixgbe_ipsec_vf_del_sa(adapter, msgbuf, vf);
+		break;
 	default:
 		e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]);
 		retval = IXGBE_ERR_MBX;

From adef9a26d6c39cbfa1b396aa34df85051a143402 Mon Sep 17 00:00:00 2001
From: Shannon Nelson <shannon.nelson@oracle.com>
Date: Mon, 13 Aug 2018 11:43:43 -0700
Subject: [PATCH 09/13] ixgbevf: add defines for IPsec offload request

Fix up the register definitions for using IPsec offloads and
add the new mailbox message IDs.

Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ixgbevf/defines.h | 8 ++++++++
 drivers/net/ethernet/intel/ixgbevf/mbx.h     | 5 +++++
 2 files changed, 13 insertions(+)

diff --git a/drivers/net/ethernet/intel/ixgbevf/defines.h b/drivers/net/ethernet/intel/ixgbevf/defines.h
index 700d8eb2f6f8a..dd9cd4541d7a4 100644
--- a/drivers/net/ethernet/intel/ixgbevf/defines.h
+++ b/drivers/net/ethernet/intel/ixgbevf/defines.h
@@ -133,9 +133,14 @@ typedef u32 ixgbe_link_speed;
 #define IXGBE_RXDADV_STAT_FCSTAT_NODDP	0x00000010 /* 01: Ctxt w/o DDP */
 #define IXGBE_RXDADV_STAT_FCSTAT_FCPRSP	0x00000020 /* 10: Recv. FCP_RSP */
 #define IXGBE_RXDADV_STAT_FCSTAT_DDP	0x00000030 /* 11: Ctxt w/ DDP */
+#define IXGBE_RXDADV_STAT_SECP		0x00020000 /* IPsec/MACsec pkt found */
 
 #define IXGBE_RXDADV_RSSTYPE_MASK	0x0000000F
 #define IXGBE_RXDADV_PKTTYPE_MASK	0x0000FFF0
+#define IXGBE_RXDADV_PKTTYPE_IPV4	0x00000010 /* IPv4 hdr present */
+#define IXGBE_RXDADV_PKTTYPE_IPV6	0x00000040 /* IPv6 hdr present */
+#define IXGBE_RXDADV_PKTTYPE_IPSEC_ESP	0x00001000 /* IPSec ESP */
+#define IXGBE_RXDADV_PKTTYPE_IPSEC_AH	0x00002000 /* IPSec AH */
 #define IXGBE_RXDADV_PKTTYPE_MASK_EX	0x0001FFF0
 #define IXGBE_RXDADV_HDRBUFLEN_MASK	0x00007FE0
 #define IXGBE_RXDADV_RSCCNT_MASK	0x001E0000
@@ -250,9 +255,12 @@ struct ixgbe_adv_tx_context_desc {
 #define IXGBE_ADVTXD_TUCMD_L4T_UDP	0x00000000  /* L4 Packet TYPE of UDP */
 #define IXGBE_ADVTXD_TUCMD_L4T_TCP	0x00000800  /* L4 Packet TYPE of TCP */
 #define IXGBE_ADVTXD_TUCMD_L4T_SCTP	0x00001000  /* L4 Packet TYPE of SCTP */
+#define IXGBE_ADVTXD_TUCMD_IPSEC_TYPE_ESP   0x00002000 /* IPSec Type ESP */
+#define IXGBE_ADVTXD_TUCMD_IPSEC_ENCRYPT_EN 0x00004000 /* ESP Encrypt Enable */
 #define IXGBE_ADVTXD_IDX_SHIFT	4 /* Adv desc Index shift */
 #define IXGBE_ADVTXD_CC		0x00000080 /* Check Context */
 #define IXGBE_ADVTXD_POPTS_SHIFT	8  /* Adv desc POPTS shift */
+#define IXGBE_ADVTXD_POPTS_IPSEC	0x00000400 /* IPSec offload request */
 #define IXGBE_ADVTXD_POPTS_IXSM	(IXGBE_TXD_POPTS_IXSM << \
 				 IXGBE_ADVTXD_POPTS_SHIFT)
 #define IXGBE_ADVTXD_POPTS_TXSM	(IXGBE_TXD_POPTS_TXSM << \
diff --git a/drivers/net/ethernet/intel/ixgbevf/mbx.h b/drivers/net/ethernet/intel/ixgbevf/mbx.h
index bfd9ae1508088..853796c8ef0e2 100644
--- a/drivers/net/ethernet/intel/ixgbevf/mbx.h
+++ b/drivers/net/ethernet/intel/ixgbevf/mbx.h
@@ -62,6 +62,7 @@ enum ixgbe_pfvf_api_rev {
 	ixgbe_mbox_api_11,	/* API version 1.1, linux/freebsd VF driver */
 	ixgbe_mbox_api_12,	/* API version 1.2, linux/freebsd VF driver */
 	ixgbe_mbox_api_13,	/* API version 1.3, linux/freebsd VF driver */
+	ixgbe_mbox_api_14,	/* API version 1.4, linux/freebsd VF driver */
 	/* This value should always be last */
 	ixgbe_mbox_api_unknown,	/* indicates that API version is not known */
 };
@@ -92,6 +93,10 @@ enum ixgbe_pfvf_api_rev {
 
 #define IXGBE_VF_UPDATE_XCAST_MODE	0x0c
 
+/* mailbox API, version 1.4 VF requests */
+#define IXGBE_VF_IPSEC_ADD	0x0d
+#define IXGBE_VF_IPSEC_DEL	0x0e
+
 /* length of permanent address message returned from PF */
 #define IXGBE_VF_PERMADDR_MSG_LEN	4
 /* word in permanent address message with the current multicast type */

From 0062e7cc955e0827a88570ed36ea511a7dcb391e Mon Sep 17 00:00:00 2001
From: Shannon Nelson <shannon.nelson@oracle.com>
Date: Mon, 13 Aug 2018 11:43:44 -0700
Subject: [PATCH 10/13] ixgbevf: add VF IPsec offload code

Add the IPsec offload support code.  This is based off of the similar
code in ixgbe, but instead of writing the SA registers, the VF asks
the PF to setup the offload by sending the offload information to the
PF via the standard mailbox.

Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ixgbevf/Makefile  |   1 +
 drivers/net/ethernet/intel/ixgbevf/ipsec.c   | 673 +++++++++++++++++++
 drivers/net/ethernet/intel/ixgbevf/ipsec.h   |  66 ++
 drivers/net/ethernet/intel/ixgbevf/ixgbevf.h |   8 +
 4 files changed, 748 insertions(+)
 create mode 100644 drivers/net/ethernet/intel/ixgbevf/ipsec.c
 create mode 100644 drivers/net/ethernet/intel/ixgbevf/ipsec.h

diff --git a/drivers/net/ethernet/intel/ixgbevf/Makefile b/drivers/net/ethernet/intel/ixgbevf/Makefile
index aba1e6a37a6a9..297d0f0858b59 100644
--- a/drivers/net/ethernet/intel/ixgbevf/Makefile
+++ b/drivers/net/ethernet/intel/ixgbevf/Makefile
@@ -10,4 +10,5 @@ ixgbevf-objs := vf.o \
                 mbx.o \
                 ethtool.o \
                 ixgbevf_main.o
+ixgbevf-$(CONFIG_XFRM_OFFLOAD) += ipsec.o
 
diff --git a/drivers/net/ethernet/intel/ixgbevf/ipsec.c b/drivers/net/ethernet/intel/ixgbevf/ipsec.c
new file mode 100644
index 0000000000000..997cea675a37a
--- /dev/null
+++ b/drivers/net/ethernet/intel/ixgbevf/ipsec.c
@@ -0,0 +1,673 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright(c) 2018 Oracle and/or its affiliates. All rights reserved. */
+
+#include "ixgbevf.h"
+#include <net/xfrm.h>
+#include <crypto/aead.h>
+
+#define IXGBE_IPSEC_KEY_BITS  160
+static const char aes_gcm_name[] = "rfc4106(gcm(aes))";
+
+/**
+ * ixgbevf_ipsec_set_pf_sa - ask the PF to set up an SA
+ * @adapter: board private structure
+ * @xs: xfrm info to be sent to the PF
+ *
+ * Returns: positive offload handle from the PF, or negative error code
+ **/
+static int ixgbevf_ipsec_set_pf_sa(struct ixgbevf_adapter *adapter,
+				   struct xfrm_state *xs)
+{
+	u32 msgbuf[IXGBE_VFMAILBOX_SIZE] = { 0 };
+	struct ixgbe_hw *hw = &adapter->hw;
+	struct sa_mbx_msg *sam;
+	u16 msglen;
+	int ret;
+
+	/* send the important bits to the PF */
+	sam = (struct sa_mbx_msg *)(&msgbuf[1]);
+	sam->flags = xs->xso.flags;
+	sam->spi = xs->id.spi;
+	sam->proto = xs->id.proto;
+	sam->family = xs->props.family;
+
+	if (xs->props.family == AF_INET6)
+		memcpy(sam->addr, &xs->id.daddr.a6, sizeof(xs->id.daddr.a6));
+	else
+		memcpy(sam->addr, &xs->id.daddr.a4, sizeof(xs->id.daddr.a4));
+	memcpy(sam->key, xs->aead->alg_key, sizeof(sam->key));
+
+	msgbuf[0] = IXGBE_VF_IPSEC_ADD;
+	msglen = sizeof(*sam) + sizeof(msgbuf[0]);
+
+	spin_lock_bh(&adapter->mbx_lock);
+
+	ret = hw->mbx.ops.write_posted(hw, msgbuf, msglen);
+	if (ret)
+		goto out;
+
+	msglen = sizeof(msgbuf[0]) * 2;
+	ret = hw->mbx.ops.read_posted(hw, msgbuf, msglen);
+	if (ret)
+		goto out;
+
+	ret = (int)msgbuf[1];
+	if (msgbuf[0] & IXGBE_VT_MSGTYPE_NACK && ret >= 0)
+		ret = -1;
+
+out:
+	spin_unlock_bh(&adapter->mbx_lock);
+
+	return ret;
+}
+
+/**
+ * ixgbevf_ipsec_del_pf_sa - ask the PF to delete an SA
+ * @adapter: board private structure
+ * @pfsa: sa index returned from PF when created, -1 for all
+ *
+ * Returns: 0 on success, or negative error code
+ **/
+static int ixgbevf_ipsec_del_pf_sa(struct ixgbevf_adapter *adapter, int pfsa)
+{
+	struct ixgbe_hw *hw = &adapter->hw;
+	u32 msgbuf[2];
+	int err;
+
+	memset(msgbuf, 0, sizeof(msgbuf));
+	msgbuf[0] = IXGBE_VF_IPSEC_DEL;
+	msgbuf[1] = (u32)pfsa;
+
+	spin_lock_bh(&adapter->mbx_lock);
+
+	err = hw->mbx.ops.write_posted(hw, msgbuf, sizeof(msgbuf));
+	if (err)
+		goto out;
+
+	err = hw->mbx.ops.read_posted(hw, msgbuf, sizeof(msgbuf));
+	if (err)
+		goto out;
+
+out:
+	spin_unlock_bh(&adapter->mbx_lock);
+	return err;
+}
+
+/**
+ * ixgbevf_ipsec_restore - restore the IPsec HW settings after a reset
+ * @adapter: board private structure
+ *
+ * Reload the HW tables from the SW tables after they've been bashed
+ * by a chip reset.  While we're here, make sure any stale VF data is
+ * removed, since we go through reset when num_vfs changes.
+ **/
+void ixgbevf_ipsec_restore(struct ixgbevf_adapter *adapter)
+{
+	struct ixgbevf_ipsec *ipsec = adapter->ipsec;
+	struct net_device *netdev = adapter->netdev;
+	int i;
+
+	if (!(adapter->netdev->features & NETIF_F_HW_ESP))
+		return;
+
+	/* reload the Rx and Tx keys */
+	for (i = 0; i < IXGBE_IPSEC_MAX_SA_COUNT; i++) {
+		struct rx_sa *r = &ipsec->rx_tbl[i];
+		struct tx_sa *t = &ipsec->tx_tbl[i];
+		int ret;
+
+		if (r->used) {
+			ret = ixgbevf_ipsec_set_pf_sa(adapter, r->xs);
+			if (ret < 0)
+				netdev_err(netdev, "reload rx_tbl[%d] failed = %d\n",
+					   i, ret);
+		}
+
+		if (t->used) {
+			ret = ixgbevf_ipsec_set_pf_sa(adapter, t->xs);
+			if (ret < 0)
+				netdev_err(netdev, "reload tx_tbl[%d] failed = %d\n",
+					   i, ret);
+		}
+	}
+}
+
+/**
+ * ixgbevf_ipsec_find_empty_idx - find the first unused security parameter index
+ * @ipsec: pointer to IPsec struct
+ * @rxtable: true if we need to look in the Rx table
+ *
+ * Returns the first unused index in either the Rx or Tx SA table
+ **/
+static
+int ixgbevf_ipsec_find_empty_idx(struct ixgbevf_ipsec *ipsec, bool rxtable)
+{
+	u32 i;
+
+	if (rxtable) {
+		if (ipsec->num_rx_sa == IXGBE_IPSEC_MAX_SA_COUNT)
+			return -ENOSPC;
+
+		/* search rx sa table */
+		for (i = 0; i < IXGBE_IPSEC_MAX_SA_COUNT; i++) {
+			if (!ipsec->rx_tbl[i].used)
+				return i;
+		}
+	} else {
+		if (ipsec->num_tx_sa == IXGBE_IPSEC_MAX_SA_COUNT)
+			return -ENOSPC;
+
+		/* search tx sa table */
+		for (i = 0; i < IXGBE_IPSEC_MAX_SA_COUNT; i++) {
+			if (!ipsec->tx_tbl[i].used)
+				return i;
+		}
+	}
+
+	return -ENOSPC;
+}
+
+/**
+ * ixgbevf_ipsec_find_rx_state - find the state that matches
+ * @ipsec: pointer to IPsec struct
+ * @daddr: inbound address to match
+ * @proto: protocol to match
+ * @spi: SPI to match
+ * @ip4: true if using an IPv4 address
+ *
+ * Returns a pointer to the matching SA state information
+ **/
+static
+struct xfrm_state *ixgbevf_ipsec_find_rx_state(struct ixgbevf_ipsec *ipsec,
+					       __be32 *daddr, u8 proto,
+					       __be32 spi, bool ip4)
+{
+	struct xfrm_state *ret = NULL;
+	struct rx_sa *rsa;
+
+	rcu_read_lock();
+	hash_for_each_possible_rcu(ipsec->rx_sa_list, rsa, hlist,
+				   (__force u32)spi) {
+		if (spi == rsa->xs->id.spi &&
+		    ((ip4 && *daddr == rsa->xs->id.daddr.a4) ||
+		      (!ip4 && !memcmp(daddr, &rsa->xs->id.daddr.a6,
+				       sizeof(rsa->xs->id.daddr.a6)))) &&
+		    proto == rsa->xs->id.proto) {
+			ret = rsa->xs;
+			xfrm_state_hold(ret);
+			break;
+		}
+	}
+	rcu_read_unlock();
+	return ret;
+}
+
+/**
+ * ixgbevf_ipsec_parse_proto_keys - find the key and salt based on the protocol
+ * @xs: pointer to xfrm_state struct
+ * @mykey: pointer to key array to populate
+ * @mysalt: pointer to salt value to populate
+ *
+ * This copies the protocol keys and salt to our own data tables.  The
+ * 82599 family only supports the one algorithm.
+ **/
+static int ixgbevf_ipsec_parse_proto_keys(struct xfrm_state *xs,
+					  u32 *mykey, u32 *mysalt)
+{
+	struct net_device *dev = xs->xso.dev;
+	unsigned char *key_data;
+	char *alg_name = NULL;
+	int key_len;
+
+	if (!xs->aead) {
+		netdev_err(dev, "Unsupported IPsec algorithm\n");
+		return -EINVAL;
+	}
+
+	if (xs->aead->alg_icv_len != IXGBE_IPSEC_AUTH_BITS) {
+		netdev_err(dev, "IPsec offload requires %d bit authentication\n",
+			   IXGBE_IPSEC_AUTH_BITS);
+		return -EINVAL;
+	}
+
+	key_data = &xs->aead->alg_key[0];
+	key_len = xs->aead->alg_key_len;
+	alg_name = xs->aead->alg_name;
+
+	if (strcmp(alg_name, aes_gcm_name)) {
+		netdev_err(dev, "Unsupported IPsec algorithm - please use %s\n",
+			   aes_gcm_name);
+		return -EINVAL;
+	}
+
+	/* The key bytes come down in a big endian array of bytes, so
+	 * we don't need to do any byte swapping.
+	 * 160 accounts for 16 byte key and 4 byte salt
+	 */
+	if (key_len > IXGBE_IPSEC_KEY_BITS) {
+		*mysalt = ((u32 *)key_data)[4];
+	} else if (key_len == IXGBE_IPSEC_KEY_BITS) {
+		*mysalt = 0;
+	} else {
+		netdev_err(dev, "IPsec hw offload only supports keys up to 128 bits with a 32 bit salt\n");
+		return -EINVAL;
+	}
+	memcpy(mykey, key_data, 16);
+
+	return 0;
+}
+
+/**
+ * ixgbevf_ipsec_add_sa - program device with a security association
+ * @xs: pointer to transformer state struct
+ **/
+static int ixgbevf_ipsec_add_sa(struct xfrm_state *xs)
+{
+	struct net_device *dev = xs->xso.dev;
+	struct ixgbevf_adapter *adapter = netdev_priv(dev);
+	struct ixgbevf_ipsec *ipsec = adapter->ipsec;
+	u16 sa_idx;
+	int ret;
+
+	if (xs->id.proto != IPPROTO_ESP && xs->id.proto != IPPROTO_AH) {
+		netdev_err(dev, "Unsupported protocol 0x%04x for IPsec offload\n",
+			   xs->id.proto);
+		return -EINVAL;
+	}
+
+	if (xs->xso.flags & XFRM_OFFLOAD_INBOUND) {
+		struct rx_sa rsa;
+
+		if (xs->calg) {
+			netdev_err(dev, "Compression offload not supported\n");
+			return -EINVAL;
+		}
+
+		/* find the first unused index */
+		ret = ixgbevf_ipsec_find_empty_idx(ipsec, true);
+		if (ret < 0) {
+			netdev_err(dev, "No space for SA in Rx table!\n");
+			return ret;
+		}
+		sa_idx = (u16)ret;
+
+		memset(&rsa, 0, sizeof(rsa));
+		rsa.used = true;
+		rsa.xs = xs;
+
+		if (rsa.xs->id.proto & IPPROTO_ESP)
+			rsa.decrypt = xs->ealg || xs->aead;
+
+		/* get the key and salt */
+		ret = ixgbevf_ipsec_parse_proto_keys(xs, rsa.key, &rsa.salt);
+		if (ret) {
+			netdev_err(dev, "Failed to get key data for Rx SA table\n");
+			return ret;
+		}
+
+		/* get ip for rx sa table */
+		if (xs->props.family == AF_INET6)
+			memcpy(rsa.ipaddr, &xs->id.daddr.a6, 16);
+		else
+			memcpy(&rsa.ipaddr[3], &xs->id.daddr.a4, 4);
+
+		rsa.mode = IXGBE_RXMOD_VALID;
+		if (rsa.xs->id.proto & IPPROTO_ESP)
+			rsa.mode |= IXGBE_RXMOD_PROTO_ESP;
+		if (rsa.decrypt)
+			rsa.mode |= IXGBE_RXMOD_DECRYPT;
+		if (rsa.xs->props.family == AF_INET6)
+			rsa.mode |= IXGBE_RXMOD_IPV6;
+
+		ret = ixgbevf_ipsec_set_pf_sa(adapter, xs);
+		if (ret < 0)
+			return ret;
+		rsa.pfsa = ret;
+
+		/* the preparations worked, so save the info */
+		memcpy(&ipsec->rx_tbl[sa_idx], &rsa, sizeof(rsa));
+
+		xs->xso.offload_handle = sa_idx + IXGBE_IPSEC_BASE_RX_INDEX;
+
+		ipsec->num_rx_sa++;
+
+		/* hash the new entry for faster search in Rx path */
+		hash_add_rcu(ipsec->rx_sa_list, &ipsec->rx_tbl[sa_idx].hlist,
+			     (__force u32)rsa.xs->id.spi);
+	} else {
+		struct tx_sa tsa;
+
+		/* find the first unused index */
+		ret = ixgbevf_ipsec_find_empty_idx(ipsec, false);
+		if (ret < 0) {
+			netdev_err(dev, "No space for SA in Tx table\n");
+			return ret;
+		}
+		sa_idx = (u16)ret;
+
+		memset(&tsa, 0, sizeof(tsa));
+		tsa.used = true;
+		tsa.xs = xs;
+
+		if (xs->id.proto & IPPROTO_ESP)
+			tsa.encrypt = xs->ealg || xs->aead;
+
+		ret = ixgbevf_ipsec_parse_proto_keys(xs, tsa.key, &tsa.salt);
+		if (ret) {
+			netdev_err(dev, "Failed to get key data for Tx SA table\n");
+			memset(&tsa, 0, sizeof(tsa));
+			return ret;
+		}
+
+		ret = ixgbevf_ipsec_set_pf_sa(adapter, xs);
+		if (ret < 0)
+			return ret;
+		tsa.pfsa = ret;
+
+		/* the preparations worked, so save the info */
+		memcpy(&ipsec->tx_tbl[sa_idx], &tsa, sizeof(tsa));
+
+		xs->xso.offload_handle = sa_idx + IXGBE_IPSEC_BASE_TX_INDEX;
+
+		ipsec->num_tx_sa++;
+	}
+
+	return 0;
+}
+
+/**
+ * ixgbevf_ipsec_del_sa - clear out this specific SA
+ * @xs: pointer to transformer state struct
+ **/
+static void ixgbevf_ipsec_del_sa(struct xfrm_state *xs)
+{
+	struct net_device *dev = xs->xso.dev;
+	struct ixgbevf_adapter *adapter = netdev_priv(dev);
+	struct ixgbevf_ipsec *ipsec = adapter->ipsec;
+	u16 sa_idx;
+
+	if (xs->xso.flags & XFRM_OFFLOAD_INBOUND) {
+		sa_idx = xs->xso.offload_handle - IXGBE_IPSEC_BASE_RX_INDEX;
+
+		if (!ipsec->rx_tbl[sa_idx].used) {
+			netdev_err(dev, "Invalid Rx SA selected sa_idx=%d offload_handle=%lu\n",
+				   sa_idx, xs->xso.offload_handle);
+			return;
+		}
+
+		ixgbevf_ipsec_del_pf_sa(adapter, ipsec->rx_tbl[sa_idx].pfsa);
+		hash_del_rcu(&ipsec->rx_tbl[sa_idx].hlist);
+		memset(&ipsec->rx_tbl[sa_idx], 0, sizeof(struct rx_sa));
+		ipsec->num_rx_sa--;
+	} else {
+		sa_idx = xs->xso.offload_handle - IXGBE_IPSEC_BASE_TX_INDEX;
+
+		if (!ipsec->tx_tbl[sa_idx].used) {
+			netdev_err(dev, "Invalid Tx SA selected sa_idx=%d offload_handle=%lu\n",
+				   sa_idx, xs->xso.offload_handle);
+			return;
+		}
+
+		ixgbevf_ipsec_del_pf_sa(adapter, ipsec->tx_tbl[sa_idx].pfsa);
+		memset(&ipsec->tx_tbl[sa_idx], 0, sizeof(struct tx_sa));
+		ipsec->num_tx_sa--;
+	}
+}
+
+/**
+ * ixgbevf_ipsec_offload_ok - can this packet use the xfrm hw offload
+ * @skb: current data packet
+ * @xs: pointer to transformer state struct
+ **/
+static bool ixgbevf_ipsec_offload_ok(struct sk_buff *skb, struct xfrm_state *xs)
+{
+	if (xs->props.family == AF_INET) {
+		/* Offload with IPv4 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 const struct xfrmdev_ops ixgbevf_xfrmdev_ops = {
+	.xdo_dev_state_add = ixgbevf_ipsec_add_sa,
+	.xdo_dev_state_delete = ixgbevf_ipsec_del_sa,
+	.xdo_dev_offload_ok = ixgbevf_ipsec_offload_ok,
+};
+
+/**
+ * ixgbevf_ipsec_tx - setup Tx flags for IPsec offload
+ * @tx_ring: outgoing context
+ * @first: current data packet
+ * @itd: ipsec Tx data for later use in building context descriptor
+ **/
+int ixgbevf_ipsec_tx(struct ixgbevf_ring *tx_ring,
+		     struct ixgbevf_tx_buffer *first,
+		     struct ixgbevf_ipsec_tx_data *itd)
+{
+	struct ixgbevf_adapter *adapter = netdev_priv(tx_ring->netdev);
+	struct ixgbevf_ipsec *ipsec = adapter->ipsec;
+	struct xfrm_state *xs;
+	struct tx_sa *tsa;
+	u16 sa_idx;
+
+	if (unlikely(!first->skb->sp->len)) {
+		netdev_err(tx_ring->netdev, "%s: no xfrm state len = %d\n",
+			   __func__, first->skb->sp->len);
+		return 0;
+	}
+
+	xs = xfrm_input_state(first->skb);
+	if (unlikely(!xs)) {
+		netdev_err(tx_ring->netdev, "%s: no xfrm_input_state() xs = %p\n",
+			   __func__, xs);
+		return 0;
+	}
+
+	sa_idx = xs->xso.offload_handle - IXGBE_IPSEC_BASE_TX_INDEX;
+	if (unlikely(sa_idx > IXGBE_IPSEC_MAX_SA_COUNT)) {
+		netdev_err(tx_ring->netdev, "%s: bad sa_idx=%d handle=%lu\n",
+			   __func__, sa_idx, xs->xso.offload_handle);
+		return 0;
+	}
+
+	tsa = &ipsec->tx_tbl[sa_idx];
+	if (unlikely(!tsa->used)) {
+		netdev_err(tx_ring->netdev, "%s: unused sa_idx=%d\n",
+			   __func__, sa_idx);
+		return 0;
+	}
+
+	itd->pfsa = tsa->pfsa - IXGBE_IPSEC_BASE_TX_INDEX;
+
+	first->tx_flags |= IXGBE_TX_FLAGS_IPSEC | IXGBE_TX_FLAGS_CSUM;
+
+	if (xs->id.proto == IPPROTO_ESP) {
+		itd->flags |= IXGBE_ADVTXD_TUCMD_IPSEC_TYPE_ESP |
+			      IXGBE_ADVTXD_TUCMD_L4T_TCP;
+		if (first->protocol == htons(ETH_P_IP))
+			itd->flags |= IXGBE_ADVTXD_TUCMD_IPV4;
+
+		/* The actual trailer length is authlen (16 bytes) plus
+		 * 2 bytes for the proto and the padlen values, plus
+		 * padlen bytes of padding.  This ends up not the same
+		 * as the static value found in xs->props.trailer_len (21).
+		 *
+		 * ... but if we're doing GSO, don't bother as the stack
+		 * doesn't add a trailer for those.
+		 */
+		if (!skb_is_gso(first->skb)) {
+			/* The "correct" way to get the auth length would be
+			 * to use
+			 *    authlen = crypto_aead_authsize(xs->data);
+			 * but since we know we only have one size to worry
+			 * about * we can let the compiler use the constant
+			 * and save us a few CPU cycles.
+			 */
+			const int authlen = IXGBE_IPSEC_AUTH_BITS / 8;
+			struct sk_buff *skb = first->skb;
+			u8 padlen;
+			int ret;
+
+			ret = skb_copy_bits(skb, skb->len - (authlen + 2),
+					    &padlen, 1);
+			if (unlikely(ret))
+				return 0;
+			itd->trailer_len = authlen + 2 + padlen;
+		}
+	}
+	if (tsa->encrypt)
+		itd->flags |= IXGBE_ADVTXD_TUCMD_IPSEC_ENCRYPT_EN;
+
+	return 1;
+}
+
+/**
+ * ixgbevf_ipsec_rx - decode IPsec bits from Rx descriptor
+ * @rx_ring: receiving ring
+ * @rx_desc: receive data descriptor
+ * @skb: current data packet
+ *
+ * Determine if there was an IPsec encapsulation noticed, and if so set up
+ * the resulting status for later in the receive stack.
+ **/
+void ixgbevf_ipsec_rx(struct ixgbevf_ring *rx_ring,
+		      union ixgbe_adv_rx_desc *rx_desc,
+		      struct sk_buff *skb)
+{
+	struct ixgbevf_adapter *adapter = netdev_priv(rx_ring->netdev);
+	__le16 pkt_info = rx_desc->wb.lower.lo_dword.hs_rss.pkt_info;
+	__le16 ipsec_pkt_types = cpu_to_le16(IXGBE_RXDADV_PKTTYPE_IPSEC_AH |
+					     IXGBE_RXDADV_PKTTYPE_IPSEC_ESP);
+	struct ixgbevf_ipsec *ipsec = adapter->ipsec;
+	struct xfrm_offload *xo = NULL;
+	struct xfrm_state *xs = NULL;
+	struct ipv6hdr *ip6 = NULL;
+	struct iphdr *ip4 = NULL;
+	void *daddr;
+	__be32 spi;
+	u8 *c_hdr;
+	u8 proto;
+
+	/* Find the IP and crypto headers in the data.
+	 * We can assume no VLAN header in the way, b/c the
+	 * hw won't recognize the IPsec packet and anyway the
+	 * currently VLAN device doesn't support xfrm offload.
+	 */
+	if (pkt_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_IPV4)) {
+		ip4 = (struct iphdr *)(skb->data + ETH_HLEN);
+		daddr = &ip4->daddr;
+		c_hdr = (u8 *)ip4 + ip4->ihl * 4;
+	} else if (pkt_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_IPV6)) {
+		ip6 = (struct ipv6hdr *)(skb->data + ETH_HLEN);
+		daddr = &ip6->daddr;
+		c_hdr = (u8 *)ip6 + sizeof(struct ipv6hdr);
+	} else {
+		return;
+	}
+
+	switch (pkt_info & ipsec_pkt_types) {
+	case cpu_to_le16(IXGBE_RXDADV_PKTTYPE_IPSEC_AH):
+		spi = ((struct ip_auth_hdr *)c_hdr)->spi;
+		proto = IPPROTO_AH;
+		break;
+	case cpu_to_le16(IXGBE_RXDADV_PKTTYPE_IPSEC_ESP):
+		spi = ((struct ip_esp_hdr *)c_hdr)->spi;
+		proto = IPPROTO_ESP;
+		break;
+	default:
+		return;
+	}
+
+	xs = ixgbevf_ipsec_find_rx_state(ipsec, daddr, proto, spi, !!ip4);
+	if (unlikely(!xs))
+		return;
+
+	skb->sp = secpath_dup(skb->sp);
+	if (unlikely(!skb->sp))
+		return;
+
+	skb->sp->xvec[skb->sp->len++] = xs;
+	skb->sp->olen++;
+	xo = xfrm_offload(skb);
+	xo->flags = CRYPTO_DONE;
+	xo->status = CRYPTO_SUCCESS;
+
+	adapter->rx_ipsec++;
+}
+
+/**
+ * ixgbevf_init_ipsec_offload - initialize registers for IPsec operation
+ * @adapter: board private structure
+ **/
+void ixgbevf_init_ipsec_offload(struct ixgbevf_adapter *adapter)
+{
+	struct ixgbevf_ipsec *ipsec;
+	size_t size;
+
+	switch (adapter->hw.api_version) {
+	case ixgbe_mbox_api_14:
+		break;
+	default:
+		return;
+	}
+
+	ipsec = kzalloc(sizeof(*ipsec), GFP_KERNEL);
+	if (!ipsec)
+		goto err1;
+	hash_init(ipsec->rx_sa_list);
+
+	size = sizeof(struct rx_sa) * IXGBE_IPSEC_MAX_SA_COUNT;
+	ipsec->rx_tbl = kzalloc(size, GFP_KERNEL);
+	if (!ipsec->rx_tbl)
+		goto err2;
+
+	size = sizeof(struct tx_sa) * IXGBE_IPSEC_MAX_SA_COUNT;
+	ipsec->tx_tbl = kzalloc(size, GFP_KERNEL);
+	if (!ipsec->tx_tbl)
+		goto err2;
+
+	ipsec->num_rx_sa = 0;
+	ipsec->num_tx_sa = 0;
+
+	adapter->ipsec = ipsec;
+
+	adapter->netdev->xfrmdev_ops = &ixgbevf_xfrmdev_ops;
+
+#define IXGBEVF_ESP_FEATURES	(NETIF_F_HW_ESP | \
+				 NETIF_F_HW_ESP_TX_CSUM | \
+				 NETIF_F_GSO_ESP)
+
+	adapter->netdev->features |= IXGBEVF_ESP_FEATURES;
+	adapter->netdev->hw_enc_features |= IXGBEVF_ESP_FEATURES;
+
+	return;
+
+err2:
+	kfree(ipsec->rx_tbl);
+	kfree(ipsec->tx_tbl);
+	kfree(ipsec);
+err1:
+	netdev_err(adapter->netdev, "Unable to allocate memory for SA tables");
+}
+
+/**
+ * ixgbevf_stop_ipsec_offload - tear down the IPsec offload
+ * @adapter: board private structure
+ **/
+void ixgbevf_stop_ipsec_offload(struct ixgbevf_adapter *adapter)
+{
+	struct ixgbevf_ipsec *ipsec = adapter->ipsec;
+
+	adapter->ipsec = NULL;
+	if (ipsec) {
+		kfree(ipsec->rx_tbl);
+		kfree(ipsec->tx_tbl);
+		kfree(ipsec);
+	}
+}
diff --git a/drivers/net/ethernet/intel/ixgbevf/ipsec.h b/drivers/net/ethernet/intel/ixgbevf/ipsec.h
new file mode 100644
index 0000000000000..3740725041c33
--- /dev/null
+++ b/drivers/net/ethernet/intel/ixgbevf/ipsec.h
@@ -0,0 +1,66 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright(c) 2018 Oracle and/or its affiliates. All rights reserved. */
+
+#ifndef _IXGBEVF_IPSEC_H_
+#define _IXGBEVF_IPSEC_H_
+
+#define IXGBE_IPSEC_MAX_SA_COUNT	1024
+#define IXGBE_IPSEC_BASE_RX_INDEX	0
+#define IXGBE_IPSEC_BASE_TX_INDEX	IXGBE_IPSEC_MAX_SA_COUNT
+#define IXGBE_IPSEC_AUTH_BITS		128
+
+#define IXGBE_RXMOD_VALID		0x00000001
+#define IXGBE_RXMOD_PROTO_ESP		0x00000004
+#define IXGBE_RXMOD_DECRYPT		0x00000008
+#define IXGBE_RXMOD_IPV6		0x00000010
+
+struct rx_sa {
+	struct hlist_node hlist;
+	struct xfrm_state *xs;
+	__be32 ipaddr[4];
+	u32 key[4];
+	u32 salt;
+	u32 mode;
+	u32 pfsa;
+	bool used;
+	bool decrypt;
+};
+
+struct rx_ip_sa {
+	__be32 ipaddr[4];
+	u32 ref_cnt;
+	bool used;
+};
+
+struct tx_sa {
+	struct xfrm_state *xs;
+	u32 key[4];
+	u32 salt;
+	u32 pfsa;
+	bool encrypt;
+	bool used;
+};
+
+struct ixgbevf_ipsec_tx_data {
+	u32 flags;
+	u16 trailer_len;
+	u16 pfsa;
+};
+
+struct ixgbevf_ipsec {
+	u16 num_rx_sa;
+	u16 num_tx_sa;
+	struct rx_sa *rx_tbl;
+	struct tx_sa *tx_tbl;
+	DECLARE_HASHTABLE(rx_sa_list, 10);
+};
+
+struct sa_mbx_msg {
+	__be32 spi;
+	u8 flags;
+	u8 proto;
+	u16 family;
+	__be32 addr[4];
+	u32 key[5];
+};
+#endif /* _IXGBEVF_IPSEC_H_ */
diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h b/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h
index 56a1031dcc074..172637e2f2e69 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h
@@ -14,6 +14,7 @@
 #include <net/xdp.h>
 
 #include "vf.h"
+#include "ipsec.h"
 
 #define IXGBE_MAX_TXD_PWR	14
 #define IXGBE_MAX_DATA_PER_TXD	BIT(IXGBE_MAX_TXD_PWR)
@@ -163,6 +164,7 @@ struct ixgbevf_ring {
 #define IXGBE_TX_FLAGS_VLAN		BIT(1)
 #define IXGBE_TX_FLAGS_TSO		BIT(2)
 #define IXGBE_TX_FLAGS_IPV4		BIT(3)
+#define IXGBE_TX_FLAGS_IPSEC		BIT(4)
 #define IXGBE_TX_FLAGS_VLAN_MASK	0xffff0000
 #define IXGBE_TX_FLAGS_VLAN_PRIO_MASK	0x0000e000
 #define IXGBE_TX_FLAGS_VLAN_SHIFT	16
@@ -338,6 +340,7 @@ struct ixgbevf_adapter {
 	struct ixgbevf_ring *tx_ring[MAX_TX_QUEUES]; /* One per active queue */
 	u64 restart_queue;
 	u32 tx_timeout_count;
+	u64 tx_ipsec;
 
 	/* RX */
 	int num_rx_queues;
@@ -348,6 +351,7 @@ struct ixgbevf_adapter {
 	u64 alloc_rx_page_failed;
 	u64 alloc_rx_buff_failed;
 	u64 alloc_rx_page;
+	u64 rx_ipsec;
 
 	struct msix_entry *msix_entries;
 
@@ -384,6 +388,10 @@ struct ixgbevf_adapter {
 	u8 rss_indir_tbl[IXGBEVF_X550_VFRETA_SIZE];
 	u32 flags;
 #define IXGBEVF_FLAGS_LEGACY_RX		BIT(1)
+
+#ifdef CONFIG_XFRM
+	struct ixgbevf_ipsec *ipsec;
+#endif /* CONFIG_XFRM */
 };
 
 enum ixbgevf_state_t {

From 7f68d43067018df9b6ce0e75a99c9d58ded989f5 Mon Sep 17 00:00:00 2001
From: Shannon Nelson <shannon.nelson@oracle.com>
Date: Mon, 13 Aug 2018 11:43:45 -0700
Subject: [PATCH 11/13] ixgbevf: enable VF IPsec offload operations

Add the IPsec initialization into the driver startup and
add the Rx and Tx processing hooks.

Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ixgbevf/defines.h  |  2 +-
 drivers/net/ethernet/intel/ixgbevf/ethtool.c  |  2 +
 drivers/net/ethernet/intel/ixgbevf/ixgbevf.h  | 25 +++++++
 .../net/ethernet/intel/ixgbevf/ixgbevf_main.c | 74 ++++++++++++++-----
 drivers/net/ethernet/intel/ixgbevf/vf.c       |  4 +
 5 files changed, 86 insertions(+), 21 deletions(-)

diff --git a/drivers/net/ethernet/intel/ixgbevf/defines.h b/drivers/net/ethernet/intel/ixgbevf/defines.h
index dd9cd4541d7a4..6bace746eaac7 100644
--- a/drivers/net/ethernet/intel/ixgbevf/defines.h
+++ b/drivers/net/ethernet/intel/ixgbevf/defines.h
@@ -234,7 +234,7 @@ union ixgbe_adv_rx_desc {
 /* Context descriptors */
 struct ixgbe_adv_tx_context_desc {
 	__le32 vlan_macip_lens;
-	__le32 seqnum_seed;
+	__le32 fceof_saidx;
 	__le32 type_tucmd_mlhl;
 	__le32 mss_l4len_idx;
 };
diff --git a/drivers/net/ethernet/intel/ixgbevf/ethtool.c b/drivers/net/ethernet/intel/ixgbevf/ethtool.c
index 631c91046f397..5399787e07aff 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ethtool.c
+++ b/drivers/net/ethernet/intel/ixgbevf/ethtool.c
@@ -55,6 +55,8 @@ static struct ixgbe_stats ixgbevf_gstrings_stats[] = {
 	IXGBEVF_STAT("alloc_rx_page", alloc_rx_page),
 	IXGBEVF_STAT("alloc_rx_page_failed", alloc_rx_page_failed),
 	IXGBEVF_STAT("alloc_rx_buff_failed", alloc_rx_buff_failed),
+	IXGBEVF_STAT("tx_ipsec", tx_ipsec),
+	IXGBEVF_STAT("rx_ipsec", rx_ipsec),
 };
 
 #define IXGBEVF_QUEUE_STATS_LEN ( \
diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h b/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h
index 172637e2f2e69..e399e1c0c54ab 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h
@@ -459,6 +459,31 @@ int ethtool_ioctl(struct ifreq *ifr);
 
 extern void ixgbevf_write_eitr(struct ixgbevf_q_vector *q_vector);
 
+#ifdef CONFIG_XFRM_OFFLOAD
+void ixgbevf_init_ipsec_offload(struct ixgbevf_adapter *adapter);
+void ixgbevf_stop_ipsec_offload(struct ixgbevf_adapter *adapter);
+void ixgbevf_ipsec_restore(struct ixgbevf_adapter *adapter);
+void ixgbevf_ipsec_rx(struct ixgbevf_ring *rx_ring,
+		      union ixgbe_adv_rx_desc *rx_desc,
+		      struct sk_buff *skb);
+int ixgbevf_ipsec_tx(struct ixgbevf_ring *tx_ring,
+		     struct ixgbevf_tx_buffer *first,
+		     struct ixgbevf_ipsec_tx_data *itd);
+#else
+static inline void ixgbevf_init_ipsec_offload(struct ixgbevf_adapter *adapter)
+{ }
+static inline void ixgbevf_stop_ipsec_offload(struct ixgbevf_adapter *adapter)
+{ }
+static inline void ixgbevf_ipsec_restore(struct ixgbevf_adapter *adapter) { }
+static inline void ixgbevf_ipsec_rx(struct ixgbevf_ring *rx_ring,
+				    union ixgbe_adv_rx_desc *rx_desc,
+				    struct sk_buff *skb) { }
+static inline int ixgbevf_ipsec_tx(struct ixgbevf_ring *tx_ring,
+				   struct ixgbevf_tx_buffer *first,
+				   struct ixgbevf_ipsec_tx_data *itd)
+{ return 0; }
+#endif /* CONFIG_XFRM_OFFLOAD */
+
 void ixgbe_napi_add_all(struct ixgbevf_adapter *adapter);
 void ixgbe_napi_del_all(struct ixgbevf_adapter *adapter);
 
diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
index 15deac07fd921..17e23f609d746 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
@@ -40,7 +40,7 @@ static const char ixgbevf_driver_string[] =
 #define DRV_VERSION "4.1.0-k"
 const char ixgbevf_driver_version[] = DRV_VERSION;
 static char ixgbevf_copyright[] =
-	"Copyright (c) 2009 - 2015 Intel Corporation.";
+	"Copyright (c) 2009 - 2018 Intel Corporation.";
 
 static const struct ixgbevf_info *ixgbevf_info_tbl[] = {
 	[board_82599_vf]	= &ixgbevf_82599_vf_info,
@@ -268,7 +268,7 @@ static bool ixgbevf_clean_tx_irq(struct ixgbevf_q_vector *q_vector,
 	struct ixgbevf_adapter *adapter = q_vector->adapter;
 	struct ixgbevf_tx_buffer *tx_buffer;
 	union ixgbe_adv_tx_desc *tx_desc;
-	unsigned int total_bytes = 0, total_packets = 0;
+	unsigned int total_bytes = 0, total_packets = 0, total_ipsec = 0;
 	unsigned int budget = tx_ring->count / 2;
 	unsigned int i = tx_ring->next_to_clean;
 
@@ -299,6 +299,8 @@ static bool ixgbevf_clean_tx_irq(struct ixgbevf_q_vector *q_vector,
 		/* update the statistics for this packet */
 		total_bytes += tx_buffer->bytecount;
 		total_packets += tx_buffer->gso_segs;
+		if (tx_buffer->tx_flags & IXGBE_TX_FLAGS_IPSEC)
+			total_ipsec++;
 
 		/* free the skb */
 		if (ring_is_xdp(tx_ring))
@@ -361,6 +363,7 @@ static bool ixgbevf_clean_tx_irq(struct ixgbevf_q_vector *q_vector,
 	u64_stats_update_end(&tx_ring->syncp);
 	q_vector->tx.total_bytes += total_bytes;
 	q_vector->tx.total_packets += total_packets;
+	adapter->tx_ipsec += total_ipsec;
 
 	if (check_for_tx_hang(tx_ring) && ixgbevf_check_tx_hang(tx_ring)) {
 		struct ixgbe_hw *hw = &adapter->hw;
@@ -516,6 +519,9 @@ static void ixgbevf_process_skb_fields(struct ixgbevf_ring *rx_ring,
 			__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
 	}
 
+	if (ixgbevf_test_staterr(rx_desc, IXGBE_RXDADV_STAT_SECP))
+		ixgbevf_ipsec_rx(rx_ring, rx_desc, skb);
+
 	skb->protocol = eth_type_trans(skb, rx_ring->netdev);
 }
 
@@ -1012,7 +1018,7 @@ static int ixgbevf_xmit_xdp_ring(struct ixgbevf_ring *ring,
 		context_desc = IXGBEVF_TX_CTXTDESC(ring, 0);
 		context_desc->vlan_macip_lens	=
 			cpu_to_le32(ETH_HLEN << IXGBE_ADVTXD_MACLEN_SHIFT);
-		context_desc->seqnum_seed	= 0;
+		context_desc->fceof_saidx	= 0;
 		context_desc->type_tucmd_mlhl	=
 			cpu_to_le32(IXGBE_TXD_CMD_DEXT |
 				    IXGBE_ADVTXD_DTYP_CTXT);
@@ -2200,6 +2206,7 @@ static void ixgbevf_configure(struct ixgbevf_adapter *adapter)
 	ixgbevf_set_rx_mode(adapter->netdev);
 
 	ixgbevf_restore_vlan(adapter);
+	ixgbevf_ipsec_restore(adapter);
 
 	ixgbevf_configure_tx(adapter);
 	ixgbevf_configure_rx(adapter);
@@ -2246,7 +2253,8 @@ static void ixgbevf_init_last_counter_stats(struct ixgbevf_adapter *adapter)
 static void ixgbevf_negotiate_api(struct ixgbevf_adapter *adapter)
 {
 	struct ixgbe_hw *hw = &adapter->hw;
-	int api[] = { ixgbe_mbox_api_13,
+	int api[] = { ixgbe_mbox_api_14,
+		      ixgbe_mbox_api_13,
 		      ixgbe_mbox_api_12,
 		      ixgbe_mbox_api_11,
 		      ixgbe_mbox_api_10,
@@ -2605,6 +2613,7 @@ static void ixgbevf_set_num_queues(struct ixgbevf_adapter *adapter)
 		case ixgbe_mbox_api_11:
 		case ixgbe_mbox_api_12:
 		case ixgbe_mbox_api_13:
+		case ixgbe_mbox_api_14:
 			if (adapter->xdp_prog &&
 			    hw->mac.max_tx_queues == rss)
 				rss = rss > 3 ? 2 : 1;
@@ -3700,8 +3709,8 @@ static void ixgbevf_queue_reset_subtask(struct ixgbevf_adapter *adapter)
 }
 
 static void ixgbevf_tx_ctxtdesc(struct ixgbevf_ring *tx_ring,
-				u32 vlan_macip_lens, u32 type_tucmd,
-				u32 mss_l4len_idx)
+				u32 vlan_macip_lens, u32 fceof_saidx,
+				u32 type_tucmd, u32 mss_l4len_idx)
 {
 	struct ixgbe_adv_tx_context_desc *context_desc;
 	u16 i = tx_ring->next_to_use;
@@ -3715,14 +3724,15 @@ static void ixgbevf_tx_ctxtdesc(struct ixgbevf_ring *tx_ring,
 	type_tucmd |= IXGBE_TXD_CMD_DEXT | IXGBE_ADVTXD_DTYP_CTXT;
 
 	context_desc->vlan_macip_lens	= cpu_to_le32(vlan_macip_lens);
-	context_desc->seqnum_seed	= 0;
+	context_desc->fceof_saidx	= cpu_to_le32(fceof_saidx);
 	context_desc->type_tucmd_mlhl	= cpu_to_le32(type_tucmd);
 	context_desc->mss_l4len_idx	= cpu_to_le32(mss_l4len_idx);
 }
 
 static int ixgbevf_tso(struct ixgbevf_ring *tx_ring,
 		       struct ixgbevf_tx_buffer *first,
-		       u8 *hdr_len)
+		       u8 *hdr_len,
+		       struct ixgbevf_ipsec_tx_data *itd)
 {
 	u32 vlan_macip_lens, type_tucmd, mss_l4len_idx;
 	struct sk_buff *skb = first->skb;
@@ -3736,6 +3746,7 @@ static int ixgbevf_tso(struct ixgbevf_ring *tx_ring,
 		unsigned char *hdr;
 	} l4;
 	u32 paylen, l4_offset;
+	u32 fceof_saidx = 0;
 	int err;
 
 	if (skb->ip_summed != CHECKSUM_PARTIAL)
@@ -3761,13 +3772,15 @@ static int ixgbevf_tso(struct ixgbevf_ring *tx_ring,
 	if (ip.v4->version == 4) {
 		unsigned char *csum_start = skb_checksum_start(skb);
 		unsigned char *trans_start = ip.hdr + (ip.v4->ihl * 4);
+		int len = csum_start - trans_start;
 
 		/* IP header will have to cancel out any data that
-		 * is not a part of the outer IP header
+		 * is not a part of the outer IP header, so set to
+		 * a reverse csum if needed, else init check to 0.
 		 */
-		ip.v4->check = csum_fold(csum_partial(trans_start,
-						      csum_start - trans_start,
-						      0));
+		ip.v4->check = (skb_shinfo(skb)->gso_type & SKB_GSO_PARTIAL) ?
+					   csum_fold(csum_partial(trans_start,
+								  len, 0)) : 0;
 		type_tucmd |= IXGBE_ADVTXD_TUCMD_IPV4;
 
 		ip.v4->tot_len = 0;
@@ -3799,13 +3812,16 @@ static int ixgbevf_tso(struct ixgbevf_ring *tx_ring,
 	mss_l4len_idx |= skb_shinfo(skb)->gso_size << IXGBE_ADVTXD_MSS_SHIFT;
 	mss_l4len_idx |= (1u << IXGBE_ADVTXD_IDX_SHIFT);
 
+	fceof_saidx |= itd->pfsa;
+	type_tucmd |= itd->flags | itd->trailer_len;
+
 	/* vlan_macip_lens: HEADLEN, MACLEN, VLAN tag */
 	vlan_macip_lens = l4.hdr - ip.hdr;
 	vlan_macip_lens |= (ip.hdr - skb->data) << IXGBE_ADVTXD_MACLEN_SHIFT;
 	vlan_macip_lens |= first->tx_flags & IXGBE_TX_FLAGS_VLAN_MASK;
 
-	ixgbevf_tx_ctxtdesc(tx_ring, vlan_macip_lens,
-			    type_tucmd, mss_l4len_idx);
+	ixgbevf_tx_ctxtdesc(tx_ring, vlan_macip_lens, fceof_saidx, type_tucmd,
+			    mss_l4len_idx);
 
 	return 1;
 }
@@ -3820,10 +3836,12 @@ static inline bool ixgbevf_ipv6_csum_is_sctp(struct sk_buff *skb)
 }
 
 static void ixgbevf_tx_csum(struct ixgbevf_ring *tx_ring,
-			    struct ixgbevf_tx_buffer *first)
+			    struct ixgbevf_tx_buffer *first,
+			    struct ixgbevf_ipsec_tx_data *itd)
 {
 	struct sk_buff *skb = first->skb;
 	u32 vlan_macip_lens = 0;
+	u32 fceof_saidx = 0;
 	u32 type_tucmd = 0;
 
 	if (skb->ip_summed != CHECKSUM_PARTIAL)
@@ -3862,7 +3880,11 @@ static void ixgbevf_tx_csum(struct ixgbevf_ring *tx_ring,
 	vlan_macip_lens |= skb_network_offset(skb) << IXGBE_ADVTXD_MACLEN_SHIFT;
 	vlan_macip_lens |= first->tx_flags & IXGBE_TX_FLAGS_VLAN_MASK;
 
-	ixgbevf_tx_ctxtdesc(tx_ring, vlan_macip_lens, type_tucmd, 0);
+	fceof_saidx |= itd->pfsa;
+	type_tucmd |= itd->flags | itd->trailer_len;
+
+	ixgbevf_tx_ctxtdesc(tx_ring, vlan_macip_lens,
+			    fceof_saidx, type_tucmd, 0);
 }
 
 static __le32 ixgbevf_tx_cmd_type(u32 tx_flags)
@@ -3896,8 +3918,12 @@ static void ixgbevf_tx_olinfo_status(union ixgbe_adv_tx_desc *tx_desc,
 	if (tx_flags & IXGBE_TX_FLAGS_IPV4)
 		olinfo_status |= cpu_to_le32(IXGBE_ADVTXD_POPTS_IXSM);
 
-	/* use index 1 context for TSO/FSO/FCOE */
-	if (tx_flags & IXGBE_TX_FLAGS_TSO)
+	/* enable IPsec */
+	if (tx_flags & IXGBE_TX_FLAGS_IPSEC)
+		olinfo_status |= cpu_to_le32(IXGBE_ADVTXD_POPTS_IPSEC);
+
+	/* use index 1 context for TSO/FSO/FCOE/IPSEC */
+	if (tx_flags & (IXGBE_TX_FLAGS_TSO | IXGBE_TX_FLAGS_IPSEC))
 		olinfo_status |= cpu_to_le32(1u << IXGBE_ADVTXD_IDX_SHIFT);
 
 	/* Check Context must be set if Tx switch is enabled, which it
@@ -4079,6 +4105,7 @@ static int ixgbevf_xmit_frame_ring(struct sk_buff *skb,
 	int tso;
 	u32 tx_flags = 0;
 	u16 count = TXD_USE_COUNT(skb_headlen(skb));
+	struct ixgbevf_ipsec_tx_data ipsec_tx = { 0 };
 #if PAGE_SIZE > IXGBE_MAX_DATA_PER_TXD
 	unsigned short f;
 #endif
@@ -4123,11 +4150,15 @@ static int ixgbevf_xmit_frame_ring(struct sk_buff *skb,
 	first->tx_flags = tx_flags;
 	first->protocol = vlan_get_protocol(skb);
 
-	tso = ixgbevf_tso(tx_ring, first, &hdr_len);
+#ifdef CONFIG_XFRM_OFFLOAD
+	if (skb->sp && !ixgbevf_ipsec_tx(tx_ring, first, &ipsec_tx))
+		goto out_drop;
+#endif
+	tso = ixgbevf_tso(tx_ring, first, &hdr_len, &ipsec_tx);
 	if (tso < 0)
 		goto out_drop;
 	else if (!tso)
-		ixgbevf_tx_csum(tx_ring, first);
+		ixgbevf_tx_csum(tx_ring, first, &ipsec_tx);
 
 	ixgbevf_tx_map(tx_ring, first, hdr_len);
 
@@ -4638,6 +4669,7 @@ static int ixgbevf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	case ixgbe_mbox_api_11:
 	case ixgbe_mbox_api_12:
 	case ixgbe_mbox_api_13:
+	case ixgbe_mbox_api_14:
 		netdev->max_mtu = IXGBE_MAX_JUMBO_FRAME_SIZE -
 				  (ETH_HLEN + ETH_FCS_LEN);
 		break;
@@ -4673,6 +4705,7 @@ static int ixgbevf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	pci_set_drvdata(pdev, netdev);
 	netif_carrier_off(netdev);
+	ixgbevf_init_ipsec_offload(adapter);
 
 	ixgbevf_init_last_counter_stats(adapter);
 
@@ -4739,6 +4772,7 @@ static void ixgbevf_remove(struct pci_dev *pdev)
 	if (netdev->reg_state == NETREG_REGISTERED)
 		unregister_netdev(netdev);
 
+	ixgbevf_stop_ipsec_offload(adapter);
 	ixgbevf_clear_interrupt_scheme(adapter);
 	ixgbevf_reset_interrupt_capability(adapter);
 
diff --git a/drivers/net/ethernet/intel/ixgbevf/vf.c b/drivers/net/ethernet/intel/ixgbevf/vf.c
index bf0577e819e1c..cd3b81300cc76 100644
--- a/drivers/net/ethernet/intel/ixgbevf/vf.c
+++ b/drivers/net/ethernet/intel/ixgbevf/vf.c
@@ -309,6 +309,7 @@ int ixgbevf_get_reta_locked(struct ixgbe_hw *hw, u32 *reta, int num_rx_queues)
 	 * is not supported for this device type.
 	 */
 	switch (hw->api_version) {
+	case ixgbe_mbox_api_14:
 	case ixgbe_mbox_api_13:
 	case ixgbe_mbox_api_12:
 		if (hw->mac.type < ixgbe_mac_X550_vf)
@@ -376,6 +377,7 @@ int ixgbevf_get_rss_key_locked(struct ixgbe_hw *hw, u8 *rss_key)
 	 * or if the operation is not supported for this device type.
 	 */
 	switch (hw->api_version) {
+	case ixgbe_mbox_api_14:
 	case ixgbe_mbox_api_13:
 	case ixgbe_mbox_api_12:
 		if (hw->mac.type < ixgbe_mac_X550_vf)
@@ -540,6 +542,7 @@ static s32 ixgbevf_update_xcast_mode(struct ixgbe_hw *hw, int xcast_mode)
 		if (xcast_mode == IXGBEVF_XCAST_MODE_PROMISC)
 			return -EOPNOTSUPP;
 		/* Fall threw */
+	case ixgbe_mbox_api_14:
 	case ixgbe_mbox_api_13:
 		break;
 	default:
@@ -890,6 +893,7 @@ int ixgbevf_get_queues(struct ixgbe_hw *hw, unsigned int *num_tcs,
 	case ixgbe_mbox_api_11:
 	case ixgbe_mbox_api_12:
 	case ixgbe_mbox_api_13:
+	case ixgbe_mbox_api_14:
 		break;
 	default:
 		return 0;

From 47b6f50077e68bcd544f657526dad4bfdce7e87d Mon Sep 17 00:00:00 2001
From: Shannon Nelson <shannon.nelson@oracle.com>
Date: Wed, 22 Aug 2018 16:47:14 -0700
Subject: [PATCH 12/13] ixgbe: disallow IPsec Tx offload when in SR-IOV mode

There seems to be a problem in the x540's internal switch wherein if SR-IOV
mode is enabled and an offloaded IPsec packet is sent to a local VF,
the packet is silently dropped.  This might never be a problem as it is
somewhat a corner case, but if someone happens to be using IPsec offload
from the PF to a VF that just happens to get migrated to the local box,
communication will mysteriously fail.

Not good.

A simple way to protect from this is to simply not allow any IPsec offloads
for outgoing packets when num_vfs != 0.  This doesn't help any offloads that
were created before SR-IOV was enabled, but we'll get to that later.

Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
index ecd01fade960c..0a1c8bf3f74f4 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
@@ -693,6 +693,9 @@ static int ixgbe_ipsec_add_sa(struct xfrm_state *xs)
 	} else {
 		struct tx_sa tsa;
 
+		if (adapter->num_vfs)
+			return -EOPNOTSUPP;
+
 		/* find the first unused index */
 		ret = ixgbe_ipsec_find_empty_idx(ipsec, false);
 		if (ret < 0) {

From 5ed4e9e990eea130b9881da3655c56cfc5646da7 Mon Sep 17 00:00:00 2001
From: Shannon Nelson <shannon.nelson@oracle.com>
Date: Wed, 22 Aug 2018 16:47:15 -0700
Subject: [PATCH 13/13] ixgbe: fix the return value for unsupported VF offload

When failing the request because we can't support that offload,
reporting EOPNOTSUPP makes much more sense than ENXIO.

Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
index 0a1c8bf3f74f4..fd1b0546fd675 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
@@ -894,7 +894,7 @@ int ixgbe_ipsec_vf_add_sa(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
 	 * device, so block these requests for now.
 	 */
 	if (!(sam->flags & XFRM_OFFLOAD_INBOUND)) {
-		err = -ENXIO;
+		err = -EOPNOTSUPP;
 		goto err_out;
 	}