diff mbox series

[net-next,06/10] ixgbe: restore offloaded SAs after a reset

Message ID 20180123182108.30789-7-jeffrey.t.kirsher@intel.com
State Accepted, archived
Delegated to: David Miller
Headers show
Series 10GbE Intel Wired LAN Driver Updates 2018-01-23 | expand

Commit Message

Kirsher, Jeffrey T Jan. 23, 2018, 6:21 p.m. UTC 
From: Shannon Nelson <shannon.nelson@oracle.com>

On a chip reset most of the table contents are lost, so must be
restored.  This scans the driver's ipsec tables and restores both
the filled and empty table slots to their pre-reset values.

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       |  2 ++
 drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c | 41 ++++++++++++++++++++++++++
 drivers/net/ethernet/intel/ixgbe/ixgbe_main.c  |  1 +
 3 files changed, 44 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe.h b/drivers/net/ethernet/intel/ixgbe/ixgbe.h
index 435b9ef31937..c43ed681f596 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe.h
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe.h
@@ -1020,8 +1020,10 @@  s32 ixgbe_negotiate_fc(struct ixgbe_hw *hw, u32 adv_reg, u32 lp_reg,
 #ifdef CONFIG_XFRM_OFFLOAD
 void ixgbe_init_ipsec_offload(struct ixgbe_adapter *adapter);
 void ixgbe_stop_ipsec_offload(struct ixgbe_adapter *adapter);
+void ixgbe_ipsec_restore(struct ixgbe_adapter *adapter);
 #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) { };
 #endif /* CONFIG_XFRM_OFFLOAD */
 #endif /* _IXGBE_H_ */
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
index 4fda18e32604..d468dd332c69 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
@@ -298,6 +298,47 @@  static void ixgbe_ipsec_start_engine(struct ixgbe_adapter *adapter)
 	IXGBE_WRITE_FLUSH(hw);
 }
 
+/**
+ * ixgbe_ipsec_restore - restore the ipsec HW settings after a reset
+ * @adapter: board private structure
+ **/
+void ixgbe_ipsec_restore(struct ixgbe_adapter *adapter)
+{
+	struct ixgbe_ipsec *ipsec = adapter->ipsec;
+	struct ixgbe_hw *hw = &adapter->hw;
+	int i;
+
+	if (!(adapter->flags2 & IXGBE_FLAG2_IPSEC_ENABLED))
+		return;
+
+	/* clean up and restart the engine */
+	ixgbe_ipsec_stop_engine(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];
+		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);
+
+		if (tsa->used)
+			ixgbe_ipsec_set_tx_sa(hw, i, tsa->key, tsa->salt);
+	}
+}
+
 /**
  * ixgbe_ipsec_find_empty_idx - find the first unused security parameter index
  * @ipsec: pointer to ipsec struct
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index f584fd18a62e..80635d12860a 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -5425,6 +5425,7 @@  static void ixgbe_configure(struct ixgbe_adapter *adapter)
 
 	ixgbe_set_rx_mode(adapter->netdev);
 	ixgbe_restore_vlan(adapter);
+	ixgbe_ipsec_restore(adapter);
 
 	switch (hw->mac.type) {
 	case ixgbe_mac_82599EB: