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ixgbe: Don't report flow director filter's status 

For two reasons I want to disable this:
1. Not any part actually check the report status(Alexander Duyck)
2. To report hash value of a packet to stack,
   RSS -> 32bits hash value
   Perfect match fdir filter -> 13bits hash value
   Hashed-based fdir filter -> 31bits hash value

   fdir filter might hash on masked tuples for IP address,
   so it's still not desirable for usage.

So for now, just stick to RSS 32bits hash value.

Signed-off-by: Fan Du <fan.du@intel.com>
Suggested-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Fan Du 2015-04-29 10:57:41 +08:00 committed by Jeff Kirsher
parent 1e1429d6ce
commit 3b7884f75f
1 changed files with 0 additions and 2 deletions
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2
drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c
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@ -1394,14 +1394,12 @@ s32 ixgbe_init_fdir_perfect_82599(struct ixgbe_hw *hw, u32 fdirctrl)
/* /*
* Continue setup of fdirctrl register bits: * Continue setup of fdirctrl register bits:
* Turn perfect match filtering on * Turn perfect match filtering on
* Report hash in RSS field of Rx wb descriptor
* Initialize the drop queue * Initialize the drop queue
* Move the flexible bytes to use the ethertype - shift 6 words * Move the flexible bytes to use the ethertype - shift 6 words
* Set the maximum length per hash bucket to 0xA filters * Set the maximum length per hash bucket to 0xA filters
* Send interrupt when 64 (0x4 * 16) filters are left * Send interrupt when 64 (0x4 * 16) filters are left
*/ */
fdirctrl |= IXGBE_FDIRCTRL_PERFECT_MATCH | fdirctrl |= IXGBE_FDIRCTRL_PERFECT_MATCH |
IXGBE_FDIRCTRL_REPORT_STATUS |
(IXGBE_FDIR_DROP_QUEUE << IXGBE_FDIRCTRL_DROP_Q_SHIFT) | (IXGBE_FDIR_DROP_QUEUE << IXGBE_FDIRCTRL_DROP_Q_SHIFT) |
(0x6 << IXGBE_FDIRCTRL_FLEX_SHIFT) | (0x6 << IXGBE_FDIRCTRL_FLEX_SHIFT) |
(0xA << IXGBE_FDIRCTRL_MAX_LENGTH_SHIFT) | (0xA << IXGBE_FDIRCTRL_MAX_LENGTH_SHIFT) |