[dpdk-dev] [PATCH 09/17] ixgbe/base: add flow director drop queue

[Wenzhuo Lu]

This patch adds ixgbe_set_fdir_drop_queue_82599 for enabling and
setting flow director drop queue, and adds sets drop no match in
ixgbe_init_fdir_perfect_82599 for x550.

Signed-off-by: Wenzhuo Lu <wenzhuo.lu at intel.com>
---
 drivers/net/ixgbe/base/ixgbe_82599.c | 38 +++++++++++++++++++++++++++++++++++-
 drivers/net/ixgbe/base/ixgbe_api.h   |  1 +
 drivers/net/ixgbe/base/ixgbe_type.h  |  2 ++
 3 files changed, 40 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ixgbe/base/ixgbe_82599.c b/drivers/net/ixgbe/base/ixgbe_82599.c
index 760894f..2318190 100644
--- a/drivers/net/ixgbe/base/ixgbe_82599.c
+++ b/drivers/net/ixgbe/base/ixgbe_82599.c
@@ -1369,7 +1369,7 @@ s32 ixgbe_init_fdir_perfect_82599(struct ixgbe_hw *hw, u32 fdirctrl,
 	 * Continue setup of fdirctrl register bits:
 	 *  Turn perfect match filtering on
 	 *  Report hash in RSS field of Rx wb descriptor
-	 *  Initialize the drop queue
+	 *  Initialize the drop queue to queue 127
 	 *  Move the flexible bytes to use the ethertype - shift 6 words
 	 *  Set the maximum length per hash bucket to 0xA filters
 	 *  Send interrupt when 64 (0x4 * 16) filters are left
@@ -1380,6 +1380,9 @@ s32 ixgbe_init_fdir_perfect_82599(struct ixgbe_hw *hw, u32 fdirctrl,
 		    (0x6 << IXGBE_FDIRCTRL_FLEX_SHIFT) |
 		    (0xA << IXGBE_FDIRCTRL_MAX_LENGTH_SHIFT) |
 		    (4 << IXGBE_FDIRCTRL_FULL_THRESH_SHIFT);
+	if ((hw->mac.type == ixgbe_mac_X550) ||
+	    (hw->mac.type == ixgbe_mac_X550EM_x))
+		fdirctrl |= IXGBE_FDIRCTRL_DROP_NO_MATCH;
 
 	if (cloud_mode)
 		fdirctrl |=(IXGBE_FDIRCTRL_FILTERMODE_CLOUD <<
@@ -1391,6 +1394,39 @@ s32 ixgbe_init_fdir_perfect_82599(struct ixgbe_hw *hw, u32 fdirctrl,
 	return IXGBE_SUCCESS;
 }
 
+/**
+ *  ixgbe_set_fdir_drop_queue_82599 - Set Flow Director drop queue
+ *  @hw: pointer to hardware structure
+ *  @dropqueue: Rx queue index used for the dropped packets
+ **/
+void ixgbe_set_fdir_drop_queue_82599(struct ixgbe_hw *hw, u8 dropqueue)
+{
+	u32 fdirctrl;
+
+	DEBUGFUNC("ixgbe_set_fdir_drop_queue_82599");
+	/* Clear init done bit and drop queue field */
+	fdirctrl = IXGBE_READ_REG(hw, IXGBE_FDIRCTRL);
+	fdirctrl &= ~(IXGBE_FDIRCTRL_DROP_Q_MASK | IXGBE_FDIRCTRL_INIT_DONE);
+
+	/* Set drop queue */
+	fdirctrl |= (dropqueue << IXGBE_FDIRCTRL_DROP_Q_SHIFT);
+	if ((hw->mac.type == ixgbe_mac_X550) ||
+	    (hw->mac.type == ixgbe_mac_X550EM_x))
+		fdirctrl |= IXGBE_FDIRCTRL_DROP_NO_MATCH;
+
+	IXGBE_WRITE_REG(hw, IXGBE_FDIRCMD,
+			(IXGBE_READ_REG(hw, IXGBE_FDIRCMD) |
+			 IXGBE_FDIRCMD_CLEARHT));
+	IXGBE_WRITE_FLUSH(hw);
+	IXGBE_WRITE_REG(hw, IXGBE_FDIRCMD,
+			(IXGBE_READ_REG(hw, IXGBE_FDIRCMD) &
+			 ~IXGBE_FDIRCMD_CLEARHT));
+	IXGBE_WRITE_FLUSH(hw);
+
+	/* write hashes and fdirctrl register, poll for completion */
+	ixgbe_fdir_enable_82599(hw, fdirctrl);
+}
+
 /*
  * These defines allow us to quickly generate all of the necessary instructions
  * in the function below by simply calling out IXGBE_COMPUTE_SIG_HASH_ITERATION
diff --git a/drivers/net/ixgbe/base/ixgbe_api.h b/drivers/net/ixgbe/base/ixgbe_api.h
index c751132..d915f9b 100644
--- a/drivers/net/ixgbe/base/ixgbe_api.h
+++ b/drivers/net/ixgbe/base/ixgbe_api.h
@@ -181,6 +181,7 @@ s32 ixgbe_read_i2c_combined_unlocked(struct ixgbe_hw *hw, u8 addr, u16 reg,
 				     u16 *val);
 s32 ixgbe_write_i2c_byte(struct ixgbe_hw *hw, u8 byte_offset, u8 dev_addr,
 			 u8 data);
+void ixgbe_set_fdir_drop_queue_82599(struct ixgbe_hw *hw, u8 dropqueue);
 s32 ixgbe_write_i2c_byte_unlocked(struct ixgbe_hw *hw, u8 byte_offset,
 				  u8 dev_addr, u8 data);
 s32 ixgbe_write_i2c_combined(struct ixgbe_hw *hw, u8 addr, u16 reg, u16 val);
diff --git a/drivers/net/ixgbe/base/ixgbe_type.h b/drivers/net/ixgbe/base/ixgbe_type.h
index 2015370..cd2bd7d 100644
--- a/drivers/net/ixgbe/base/ixgbe_type.h
+++ b/drivers/net/ixgbe/base/ixgbe_type.h
@@ -2839,7 +2839,9 @@ enum ixgbe_fdir_pballoc_type {
 #define IXGBE_FDIRCTRL_REPORT_STATUS		0x00000020
 #define IXGBE_FDIRCTRL_REPORT_STATUS_ALWAYS	0x00000080
 #define IXGBE_FDIRCTRL_DROP_Q_SHIFT		8
+#define IXGBE_FDIRCTRL_DROP_Q_MASK		0x00007F00
 #define IXGBE_FDIRCTRL_FLEX_SHIFT		16
+#define IXGBE_FDIRCTRL_DROP_NO_MATCH		0x00008000
 #define IXGBE_FDIRCTRL_FILTERMODE_SHIFT		21
 #define IXGBE_FDIRCTRL_FILTERMODE_MACVLAN	0x0001 /* bit 23:21, 001b */
 #define IXGBE_FDIRCTRL_FILTERMODE_CLOUD		0x0002 /* bit 23:21, 010b */
-- 
1.9.3