Merge branch '10GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue

Jeff Kirsher says:

====================
10GbE Intel Wired LAN Driver Updates 2018-01-23

This series contains updates to ixgbe only.

Shannon Nelson provides an implementation of the ipsec hardware offload
feature for the ixgbe driver for these devices: x540, x550, 82599.

The ixgbe NICs support ipsec offload for 1024 Rx and 1024 Tx Security
Associations (SAs), using up to 128 inbound IP addresses, and using the
rfc4106(gcm(aes)) encryption.  This code does not yet support checksum
offload, or TSO in conjunction with the ipsec offload - those will be
added in the future.

This code shows improvements in both packet throughput and CPU utilization.
For example, here are some quicky numbers that show the magnitude of the
performance gain on a single run of "iperf -c <dest>" with the ipsec
offload on both ends of a point-to-point connection:

	9.4 Gbps - normal case
	7.6 Gbps - ipsec with offload
	343 Mbps - ipsec no offload
====================

Signed-off-by: David S. Miller <[email protected]>

Author: davem330

drivers/net/ethernet/intel/ixgbe/Makefile

@@ -42,3 +42,4 @@ ixgbe-$(CONFIG_IXGBE_DCB) +=  ixgbe_dcb.o ixgbe_dcb_82598.o \
 ixgbe-$(CONFIG_IXGBE_HWMON) += ixgbe_sysfs.o
 ixgbe-$(CONFIG_DEBUG_FS) += ixgbe_debugfs.o
 ixgbe-$(CONFIG_FCOE:m=y) += ixgbe_fcoe.o
+ixgbe-$(CONFIG_XFRM_OFFLOAD) += ixgbe_ipsec.o

drivers/net/ethernet/intel/ixgbe/ixgbe.h

@@ -52,6 +52,7 @@
 #ifdef CONFIG_IXGBE_DCA
 #include <linux/dca.h>
 #endif
+#include "ixgbe_ipsec.h"
 
 #include <net/xdp.h>
 #include <net/busy_poll.h>
@@ -171,10 +172,11 @@ enum ixgbe_tx_flags {
 	IXGBE_TX_FLAGS_CC	= 0x08,
 	IXGBE_TX_FLAGS_IPV4	= 0x10,
 	IXGBE_TX_FLAGS_CSUM	= 0x20,
+	IXGBE_TX_FLAGS_IPSEC	= 0x40,
 
 	/* software defined flags */
-	IXGBE_TX_FLAGS_SW_VLAN	= 0x40,
-	IXGBE_TX_FLAGS_FCOE	= 0x80,
+	IXGBE_TX_FLAGS_SW_VLAN	= 0x80,
+	IXGBE_TX_FLAGS_FCOE	= 0x100,
 };
 
 /* VLAN info */
@@ -629,15 +631,18 @@ struct ixgbe_adapter {
 #define IXGBE_FLAG2_EEE_CAPABLE			BIT(14)
 #define IXGBE_FLAG2_EEE_ENABLED			BIT(15)
 #define IXGBE_FLAG2_RX_LEGACY			BIT(16)
+#define IXGBE_FLAG2_IPSEC_ENABLED		BIT(17)
 
 	/* Tx fast path data */
 	int num_tx_queues;
 	u16 tx_itr_setting;
 	u16 tx_work_limit;
+	u64 tx_ipsec;
 
 	/* Rx fast path data */
 	int num_rx_queues;
 	u16 rx_itr_setting;
+	u64 rx_ipsec;
 
 	/* Port number used to identify VXLAN traffic */
 	__be16 vxlan_port;
@@ -781,6 +786,10 @@ struct ixgbe_adapter {
 
 #define IXGBE_RSS_KEY_SIZE     40  /* size of RSS Hash Key in bytes */
 	u32 *rss_key;
+
+#ifdef CONFIG_XFRM
+	struct ixgbe_ipsec *ipsec;
+#endif /* CONFIG_XFRM */
 };
 
 static inline u8 ixgbe_max_rss_indices(struct ixgbe_adapter *adapter)
@@ -1011,4 +1020,24 @@ void ixgbe_store_key(struct ixgbe_adapter *adapter);
 void ixgbe_store_reta(struct ixgbe_adapter *adapter);
 s32 ixgbe_negotiate_fc(struct ixgbe_hw *hw, u32 adv_reg, u32 lp_reg,
 		       u32 adv_sym, u32 adv_asm, u32 lp_sym, u32 lp_asm);
+#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);
+void ixgbe_ipsec_rx(struct ixgbe_ring *rx_ring,
+		    union ixgbe_adv_rx_desc *rx_desc,
+		    struct sk_buff *skb);
+int ixgbe_ipsec_tx(struct ixgbe_ring *tx_ring, struct ixgbe_tx_buffer *first,
+		   struct ixgbe_ipsec_tx_data *itd);
+#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_ipsec_rx(struct ixgbe_ring *rx_ring,
+				  union ixgbe_adv_rx_desc *rx_desc,
+				  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; };
+#endif /* CONFIG_XFRM_OFFLOAD */
 #endif /* _IXGBE_H_ */

drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c

@@ -115,6 +115,8 @@ static const struct ixgbe_stats ixgbe_gstrings_stats[] = {
 	{"tx_hwtstamp_timeouts", IXGBE_STAT(tx_hwtstamp_timeouts)},
 	{"tx_hwtstamp_skipped", IXGBE_STAT(tx_hwtstamp_skipped)},
 	{"rx_hwtstamp_cleared", IXGBE_STAT(rx_hwtstamp_cleared)},
+	{"tx_ipsec", IXGBE_STAT(tx_ipsec)},
+	{"rx_ipsec", IXGBE_STAT(rx_ipsec)},
 #ifdef IXGBE_FCOE
 	{"fcoe_bad_fccrc", IXGBE_STAT(stats.fccrc)},
 	{"rx_fcoe_dropped", IXGBE_STAT(stats.fcoerpdc)},