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| author |   Alexander Duyck <alexander.h.duyck@intel.com> | 2017-03-14 10:15:27 -0700 |
|---|---|---|
| committer |   Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2017-03-29 02:15:07 -0700 |
| commit | dab86afdbbd1bc5d5a89b67ed141d2f46c3b4191 (patch) | |
| tree | 2ce6c7d5a6361409b4c8b95fdfe34363bfdf719d /drivers/net/ethernet/intel/i40e/i40e_txrx.h | |
| parent | i40e/i40evf: Add legacy-rx private flag to allow fallback to old Rx flow (diff) | |
| download | linux-dev-dab86afdbbd1bc5d5a89b67ed141d2f46c3b4191.tar.xz linux-dev-dab86afdbbd1bc5d5a89b67ed141d2f46c3b4191.zip | |
i40e/i40evf: Change the way we limit the maximum frame size for Rx
This patch changes the way we handle the maximum frame size for the Rx
path. Previously we were rounding up to 2K for a 1500 MTU and then brining
the max frame size down to MTU plus a fixed amount. With this patch
applied what we now do is limit the maximum frame to 1.5K minus the value
for NET_IP_ALIGN for standard MTU, and for any MTU greater than 1500 we
allow up to the maximum frame size. This makes the behavior more
consistent with the other drivers such as igb which had similar logic. In
addition it reduces the test matrix for MTU since we only have two max
frame sizes that are handled for Rx now.
Change-ID: I23a9d3c857e7df04b0ef28c64df63e659c013f3f
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/i40e/i40e_txrx.h')
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_txrx.h | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.h b/drivers/net/ethernet/intel/i40e/i40e_txrx.h index eb733726637f..d6609deace57 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_txrx.h +++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.h @@ -117,10 +117,8 @@ enum i40e_dyn_idx_t { /* Supported Rx Buffer Sizes (a multiple of 128) */ #define I40E_RXBUFFER_256 256 +#define I40E_RXBUFFER_1536 1536 /* 128B aligned standard Ethernet frame */ #define I40E_RXBUFFER_2048 2048 -#define I40E_RXBUFFER_3072 3072 /* For FCoE MTU of 2158 */ -#define I40E_RXBUFFER_4096 4096 -#define I40E_RXBUFFER_8192 8192 #define I40E_MAX_RXBUFFER 9728 /* largest size for single descriptor */ /* NOTE: netdev_alloc_skb reserves up to 64 bytes, NET_IP_ALIGN means we |