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authorJohn Fastabend <john.r.fastabend@intel.com>2011-08-23 03:14:22 +0000
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2011-09-28 23:09:59 -0700
commit9da712d2ede7e3e3a0da180351505310ee271773 (patch)
treeb1892a255c4d20c71b66d8a96c0554cc42463863 /drivers/net/ethernet/intel/ixgbe/ixgbe_dcb.h
parent934c18cc5a2318f525a187e77a46d559d3b8cb44 (diff)
ixgbe: update {P}FC thresholds to account for X540 and loopback
Revise high and low threshold marks wrt flow control to account for the X540 devices and latency introduced by the loopback switch. Without this it was in theory possible to drop frames on a supposedly lossless link with X540 or SR-IOV enabled. Previously we used a magic number in a define to calculate the threshold values. This made it difficult to sort out exactly which latencies were or were not being accounted for. Here I was overly explicit and tried to used #define names that would be recognizable after reading the IEEE 802.1Qbb specification. Signed-off-by: John Fastabend <john.r.fastabend@intel.com> Tested-by: Ross Brattain <ross.b.brattain@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/ixgbe/ixgbe_dcb.h')
-rw-r--r--drivers/net/ethernet/intel/ixgbe/ixgbe_dcb.h1
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb.h b/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb.h
index 0a68aa7f5d18..df095a9bbe2b 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb.h
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb.h
@@ -36,7 +36,6 @@
#define IXGBE_MAX_PACKET_BUFFERS 8
#define MAX_USER_PRIORITY 8
-#define MAX_TRAFFIC_CLASS 8
#define MAX_BW_GROUP 8
#define BW_PERCENT 100