bnx2: Adjust flow control water marks.
The current water marks are too high and can cause unnecessary flow
control frames.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c
index 063f283..dbe487f 100644
--- a/drivers/net/bnx2.c
+++ b/drivers/net/bnx2.c
@@ -1277,7 +1277,7 @@
if (lo_water >= bp->rx_ring_size)
lo_water = 0;
- hi_water = bp->rx_ring_size / 4;
+ hi_water = min_t(int, bp->rx_ring_size / 4, lo_water + 16);
if (hi_water <= lo_water)
lo_water = 0;
diff --git a/drivers/net/bnx2.h b/drivers/net/bnx2.h
index b860fbb..cd4b0e4 100644
--- a/drivers/net/bnx2.h
+++ b/drivers/net/bnx2.h
@@ -349,7 +349,7 @@
#define BNX2_L2CTX_BD_PRE_READ 0x00000000
#define BNX2_L2CTX_CTX_SIZE 0x00000000
#define BNX2_L2CTX_CTX_TYPE 0x00000000
-#define BNX2_L2CTX_LO_WATER_MARK_DEFAULT 32
+#define BNX2_L2CTX_LO_WATER_MARK_DEFAULT 4
#define BNX2_L2CTX_LO_WATER_MARK_SCALE 4
#define BNX2_L2CTX_LO_WATER_MARK_DIS 0
#define BNX2_L2CTX_HI_WATER_MARK_SHIFT 4