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 2017-04-29

This series contains updates to ixgbe and ixgbevf only, most notable is
the addition of XDP support to our 10GbE drivers.

Paul fixes ixgbe to acquire the PHY semaphore before accessing PHY
registers when issuing a device reset.

John adds XDP support (yeah!) for ixgbe.

Emil fixes an issue by flushing the MACVLAN filters on VF reset to avoid
conflicts with other VFs that may end up using the same MAC address.  Also
fixed a bug where ethtool -S displayed some empty fields for ixgbevf
because it was using ixgbe_stats instead ixgbevf_stats for
IXGBEVF_QUEUE_STATS_LEN.

Tony adds the ability to specify a zero MAC address in order to clear the
VF's MAC address from the RAR table.  Also adds support for a new
1000Base-T device based on x550EM_X MAC type.  Fixed an issue where the
RSS key specified by the user would be over-written with a pre-existing
value, so change the rss_key to a pointer so we can check to see if the
key has a value set before attempting to set it.  Fixed the logic for
mailbox support for getting RETA and RSS values, which are only supported
by 82599 and x540 devices.

v2: fixed up patches svenkatr#2 and svenkatr#3 based on feedback from Jakub and to
    address build issues when page sizes are larger than 4k
====================

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

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

@@ -235,7 +235,11 @@ struct vf_macvlans {
 struct ixgbe_tx_buffer {
 	union ixgbe_adv_tx_desc *next_to_watch;
 	unsigned long time_stamp;
-	struct sk_buff *skb;
+	union {
+		struct sk_buff *skb;
+		/* XDP uses address ptr on irq_clean */
+		void *data;
+	};
 	unsigned int bytecount;
 	unsigned short gso_segs;
 	__be16 protocol;
@@ -288,6 +292,7 @@ enum ixgbe_ring_state_t {
 	__IXGBE_TX_XPS_INIT_DONE,
 	__IXGBE_TX_DETECT_HANG,
 	__IXGBE_HANG_CHECK_ARMED,
+	__IXGBE_TX_XDP_RING,
 };
 
 #define ring_uses_build_skb(ring) \
@@ -314,10 +319,17 @@ struct ixgbe_fwd_adapter {
 	set_bit(__IXGBE_RX_RSC_ENABLED, &(ring)->state)
 #define clear_ring_rsc_enabled(ring) \
 	clear_bit(__IXGBE_RX_RSC_ENABLED, &(ring)->state)
+#define ring_is_xdp(ring) \
+	test_bit(__IXGBE_TX_XDP_RING, &(ring)->state)
+#define set_ring_xdp(ring) \
+	set_bit(__IXGBE_TX_XDP_RING, &(ring)->state)
+#define clear_ring_xdp(ring) \
+	clear_bit(__IXGBE_TX_XDP_RING, &(ring)->state)
 struct ixgbe_ring {
 	struct ixgbe_ring *next;	/* pointer to next ring in q_vector */
 	struct ixgbe_q_vector *q_vector; /* backpointer to host q_vector */
 	struct net_device *netdev;	/* netdev ring belongs to */
+	struct bpf_prog *xdp_prog;
 	struct device *dev;		/* device for DMA mapping */
 	struct ixgbe_fwd_adapter *l2_accel_priv;
 	void *desc;			/* descriptor ring memory */
@@ -379,6 +391,7 @@ enum ixgbe_ring_f_enum {
 #define IXGBE_MAX_FCOE_INDICES		8
 #define MAX_RX_QUEUES			(IXGBE_MAX_FDIR_INDICES + 1)
 #define MAX_TX_QUEUES			(IXGBE_MAX_FDIR_INDICES + 1)
+#define MAX_XDP_QUEUES			(IXGBE_MAX_FDIR_INDICES + 1)
 #define IXGBE_MAX_L2A_QUEUES		4
 #define IXGBE_BAD_L2A_QUEUE		3
 #define IXGBE_MAX_MACVLANS		31
@@ -555,6 +568,7 @@ struct ixgbe_adapter {
 	unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
 	/* OS defined structs */
 	struct net_device *netdev;
+	struct bpf_prog *xdp_prog;
 	struct pci_dev *pdev;
 
 	unsigned long state;
@@ -621,6 +635,10 @@ struct ixgbe_adapter {
 	__be16 vxlan_port;
 	__be16 geneve_port;
 
+	/* XDP */
+	int num_xdp_queues;
+	struct ixgbe_ring *xdp_ring[MAX_XDP_QUEUES];
+
 	/* TX */
 	struct ixgbe_ring *tx_ring[MAX_TX_QUEUES] ____cacheline_aligned_in_smp;
 
@@ -667,6 +685,7 @@ struct ixgbe_adapter {
 
 	u64 tx_busy;
 	unsigned int tx_ring_count;
+	unsigned int xdp_ring_count;
 	unsigned int rx_ring_count;
 
 	u32 link_speed;
@@ -750,7 +769,7 @@ struct ixgbe_adapter {
 	u8 rss_indir_tbl[IXGBE_MAX_RETA_ENTRIES];
 
 #define IXGBE_RSS_KEY_SIZE     40  /* size of RSS Hash Key in bytes */
-	u32 rss_key[IXGBE_RSS_KEY_SIZE / sizeof(u32)];
+	u32 *rss_key;
 };
 
 static inline u8 ixgbe_max_rss_indices(struct ixgbe_adapter *adapter)
@@ -807,6 +826,7 @@ enum ixgbe_boards {
 	board_X540,
 	board_X550,
 	board_X550EM_x,
+	board_x550em_x_fw,
 	board_x550em_a,
 	board_x550em_a_fw,
 };
@@ -816,6 +836,7 @@ extern const struct ixgbe_info ixgbe_82599_info;
 extern const struct ixgbe_info ixgbe_X540_info;
 extern const struct ixgbe_info ixgbe_X550_info;
 extern const struct ixgbe_info ixgbe_X550EM_x_info;
+extern const struct ixgbe_info ixgbe_x550em_x_fw_info;
 extern const struct ixgbe_info ixgbe_x550em_a_info;
 extern const struct ixgbe_info ixgbe_x550em_a_fw_info;
 #ifdef CONFIG_IXGBE_DCB
@@ -835,7 +856,7 @@ void ixgbe_down(struct ixgbe_adapter *adapter);
 void ixgbe_reinit_locked(struct ixgbe_adapter *adapter);
 void ixgbe_reset(struct ixgbe_adapter *adapter);
 void ixgbe_set_ethtool_ops(struct net_device *netdev);
-int ixgbe_setup_rx_resources(struct ixgbe_ring *);
+int ixgbe_setup_rx_resources(struct ixgbe_adapter *, struct ixgbe_ring *);
 int ixgbe_setup_tx_resources(struct ixgbe_ring *);
 void ixgbe_free_rx_resources(struct ixgbe_ring *);
 void ixgbe_free_tx_resources(struct ixgbe_ring *);

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

@@ -1071,15 +1071,19 @@ static int ixgbe_set_ringparam(struct net_device *netdev,
 	if (!netif_running(adapter->netdev)) {
 		for (i = 0; i < adapter->num_tx_queues; i++)
 			adapter->tx_ring[i]->count = new_tx_count;
+		for (i = 0; i < adapter->num_xdp_queues; i++)
+			adapter->xdp_ring[i]->count = new_tx_count;
 		for (i = 0; i < adapter->num_rx_queues; i++)
 			adapter->rx_ring[i]->count = new_rx_count;
 		adapter->tx_ring_count = new_tx_count;
+		adapter->xdp_ring_count = new_tx_count;
 		adapter->rx_ring_count = new_rx_count;
 		goto clear_reset;
 	}
 
 	/* allocate temporary buffer to store rings in */
 	i = max_t(int, adapter->num_tx_queues, adapter->num_rx_queues);
+	i = max_t(int, i, adapter->num_xdp_queues);
 	temp_ring = vmalloc(i * sizeof(struct ixgbe_ring));
 
 	if (!temp_ring) {
@@ -1111,12 +1115,33 @@ static int ixgbe_set_ringparam(struct net_device *netdev,
 			}
 		}
 
+		for (i = 0; i < adapter->num_xdp_queues; i++) {
+			memcpy(&temp_ring[i], adapter->xdp_ring[i],
+			       sizeof(struct ixgbe_ring));
+
+			temp_ring[i].count = new_tx_count;
+			err = ixgbe_setup_tx_resources(&temp_ring[i]);
+			if (err) {
+				while (i) {
+					i--;
+					ixgbe_free_tx_resources(&temp_ring[i]);
+				}
+				goto err_setup;
+			}
+		}
+
 		for (i = 0; i < adapter->num_tx_queues; i++) {
 			ixgbe_free_tx_resources(adapter->tx_ring[i]);
 
 			memcpy(adapter->tx_ring[i], &temp_ring[i],
 			       sizeof(struct ixgbe_ring));
 		}
+		for (i = 0; i < adapter->num_xdp_queues; i++) {
+			ixgbe_free_tx_resources(adapter->xdp_ring[i]);
+
+			memcpy(adapter->xdp_ring[i], &temp_ring[i],
+			       sizeof(struct ixgbe_ring));
+		}
 
 		adapter->tx_ring_count = new_tx_count;
 	}
@@ -1128,7 +1153,7 @@ static int ixgbe_set_ringparam(struct net_device *netdev,
 			       sizeof(struct ixgbe_ring));
 
 			temp_ring[i].count = new_rx_count;
-			err = ixgbe_setup_rx_resources(&temp_ring[i]);
+			err = ixgbe_setup_rx_resources(adapter, &temp_ring[i]);
 			if (err) {
 				while (i) {
 					i--;
@@ -1761,7 +1786,7 @@ static int ixgbe_setup_desc_rings(struct ixgbe_adapter *adapter)
 	rx_ring->netdev = adapter->netdev;
 	rx_ring->reg_idx = adapter->rx_ring[0]->reg_idx;
 
-	err = ixgbe_setup_rx_resources(rx_ring);
+	err = ixgbe_setup_rx_resources(adapter, rx_ring);
 	if (err) {
 		ret_val = 4;
 		goto err_nomem;
@@ -2942,9 +2967,7 @@ static int ixgbe_rss_indir_tbl_max(struct ixgbe_adapter *adapter)
 
 static u32 ixgbe_get_rxfh_key_size(struct net_device *netdev)
 {
-	struct ixgbe_adapter *adapter = netdev_priv(netdev);
-
-	return sizeof(adapter->rss_key);
+	return IXGBE_RSS_KEY_SIZE;
 }
 
 static u32 ixgbe_rss_indir_size(struct net_device *netdev)