ixgbe: add a state flags to ring

This change adds a set of state flags to the rings that allow them to
independently function allowing for features like RSC, packet split, and
TX hang detection to be done per ring instead of for the entire device.

This is accomplished by re-purposing the flow director reinit_state member
and making it a global state instead since a long for a single bit flag is
a bit wasteful.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 33 insertions, 11 deletions

diff --git a/drivers/net/ixgbe/ixgbe.h b/drivers/net/ixgbe/ixgbe.h
index e87b0ffd5832..160ce9234546 100644
--- a/drivers/net/ixgbe/ixgbe.h
+++ b/drivers/net/ixgbe/ixgbe.h
@@ -159,6 +159,31 @@ struct ixgbe_rx_queue_stats {
 	u64 alloc_rx_buff_failed;
 };
 
+enum ixbge_ring_state_t {
+	__IXGBE_TX_FDIR_INIT_DONE,
+	__IXGBE_TX_DETECT_HANG,
+	__IXGBE_RX_PS_ENABLED,
+	__IXGBE_RX_RSC_ENABLED,
+};
+
+#define ring_is_ps_enabled(ring) \
+	test_bit(__IXGBE_RX_PS_ENABLED, &(ring)->state)
+#define set_ring_ps_enabled(ring) \
+	set_bit(__IXGBE_RX_PS_ENABLED, &(ring)->state)
+#define clear_ring_ps_enabled(ring) \
+	clear_bit(__IXGBE_RX_PS_ENABLED, &(ring)->state)
+#define check_for_tx_hang(ring) \
+	test_bit(__IXGBE_TX_DETECT_HANG, &(ring)->state)
+#define set_check_for_tx_hang(ring) \
+	set_bit(__IXGBE_TX_DETECT_HANG, &(ring)->state)
+#define clear_check_for_tx_hang(ring) \
+	clear_bit(__IXGBE_TX_DETECT_HANG, &(ring)->state)
+#define ring_is_rsc_enabled(ring) \
+	test_bit(__IXGBE_RX_RSC_ENABLED, &(ring)->state)
+#define set_ring_rsc_enabled(ring) \
+	set_bit(__IXGBE_RX_RSC_ENABLED, &(ring)->state)
+#define clear_ring_rsc_enabled(ring) \
+	clear_bit(__IXGBE_RX_RSC_ENABLED, &(ring)->state)
 struct ixgbe_ring {
 	void *desc;			/* descriptor ring memory */
 	struct device *dev;             /* device for DMA mapping */
@@ -167,6 +192,7 @@ struct ixgbe_ring {
 		struct ixgbe_tx_buffer *tx_buffer_info;
 		struct ixgbe_rx_buffer *rx_buffer_info;
 	};
+	unsigned long state;
 	u8 atr_sample_rate;
 	u8 atr_count;
 	u16 count;			/* amount of descriptors */
@@ -175,28 +201,25 @@ struct ixgbe_ring {
 	u16 next_to_clean;
 
 	u8 queue_index; /* needed for multiqueue queue management */
+	u8 reg_idx;			/* holds the special value that gets
+					 * the hardware register offset
+					 * associated with this ring, which is
+					 * different for DCB and RSS modes
+					 */
+
+	u16 work_limit;			/* max work per interrupt */
 
-#define IXGBE_RING_RX_PS_ENABLED                (u8)(1)
-	u8 flags;			/* per ring feature flags */
 	u8 __iomem *tail;
 
 	unsigned int total_bytes;
 	unsigned int total_packets;
 
-	u16 work_limit;			/* max work per interrupt */
-	u16 reg_idx;			/* holds the special value that gets
-					 * the hardware register offset
-					 * associated with this ring, which is
-					 * different for DCB and RSS modes
-					 */
-
 	struct ixgbe_queue_stats stats;
 	struct u64_stats_sync syncp;
 	union {
 		struct ixgbe_tx_queue_stats tx_stats;
 		struct ixgbe_rx_queue_stats rx_stats;
 	};
-	unsigned long reinit_state;
 	int numa_node;
 	unsigned int size;		/* length in bytes */
 	dma_addr_t dma;			/* phys. address of descriptor ring */
@@ -441,7 +464,6 @@ enum ixbge_state_t {
 	__IXGBE_TESTING,
 	__IXGBE_RESETTING,
 	__IXGBE_DOWN,
-	__IXGBE_FDIR_INIT_DONE,
 	__IXGBE_SFP_MODULE_NOT_FOUND
 };