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authorMatthew Vick <matthew.vick@intel.com>2012-04-14 05:20:32 +0000
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2012-05-17 05:04:21 -0700
commit0c02dd983f0971813fcae81672b9533c35a5b2db (patch)
tree74c7c3bf1d748f62feb2cf0a0ffcf92cf1378c86 /drivers/net/ethernet/intel/igb/e1000_defines.h
parente1000: look in the page and not in skb->data for the last byte (diff)
downloadlinux-dev-0c02dd983f0971813fcae81672b9533c35a5b2db.tar.xz
linux-dev-0c02dd983f0971813fcae81672b9533c35a5b2db.zip
igb: Disable the BMC-to-OS Watchdog Enable bit for DMAC.
Under certain scenarios, it's possible that bursty manageability traffic over the BMC-to-OS path may overrun the internal manageability receive buffer causing dropped manageability packets. Clearing this bit prevents this situation by interrupting coalescing to allow manageability traffic through. Signed-off-by: Matthew Vick <matthew.vick@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/igb/e1000_defines.h')
-rw-r--r--drivers/net/ethernet/intel/igb/e1000_defines.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/igb/e1000_defines.h b/drivers/net/ethernet/intel/igb/e1000_defines.h
index 6409f85632f5..ec7e4fe3e3ee 100644
--- a/drivers/net/ethernet/intel/igb/e1000_defines.h
+++ b/drivers/net/ethernet/intel/igb/e1000_defines.h
@@ -301,6 +301,8 @@
* transactions */
#define E1000_DMACR_DMAC_LX_SHIFT 28
#define E1000_DMACR_DMAC_EN 0x80000000 /* Enable DMA Coalescing */
+/* DMA Coalescing BMC-to-OS Watchdog Enable */
+#define E1000_DMACR_DC_BMC2OSW_EN 0x00008000
#define E1000_DMCTXTH_DMCTTHR_MASK 0x00000FFF /* DMA Coalescing Transmit
* Threshold */