ixgbe: disable MSI-X by default on certain Cisco adapters

Due to an errata in 82598 parts MSI-X needs to be disabled
in certain ixgbe devices designed to transfer peer-to-peer
traffic on the PCIe bus. This patch sets the default
interrupt type to MSI rather than MSI-X for specific Cisco
ixgbe adapters.

Signed-off-by: Nicholas Nunley <nicholasx.d.nunley@intel.com>
Acked-by: John Ronciak <john.ronciak@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/net/ixgbe/ixgbe.h b/drivers/net/ixgbe/ixgbe.h
index 79c35ae3718c..ec6bcc0660c6 100644
--- a/drivers/net/ixgbe/ixgbe.h
+++ b/drivers/net/ixgbe/ixgbe.h
@@ -104,6 +104,10 @@
 #define MAX_EMULATION_MAC_ADDRS         16
 #define VMDQ_P(p)   ((p) + adapter->num_vfs)
 
+#define IXGBE_SUBDEV_ID_82598AF_MEZZ            0x0049
+#define IXGBE_SUBDEV_ID_82598AF_MENLO_Q_MEZZ    0x004a
+#define IXGBE_SUBDEV_ID_82598AF_MENLO_E_MEZZ    0x004b
+
 struct vf_data_storage {
         unsigned char vf_mac_addresses[ETH_ALEN];
         u16 vf_mc_hashes[IXGBE_MAX_VF_MC_ENTRIES];