diff options
| author |   Anjali Singhai <anjali.singhai@intel.com> | 2015-02-21 06:42:35 +0000 |
|---|---|---|
| committer |   Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2015-02-26 04:53:58 -0800 |
| commit | 71da61976ec18fb57b3ba9a1dd846b747cc7c884 (patch) | |
| tree | 9de12ed2f5e134a02805d09f26c11b9295bd4438 /drivers/net/ethernet/intel/i40evf/i40e_txrx.h | |
| parent | i40e: Don't check for Tx hang when PF down (diff) | |
| download | linux-dev-71da61976ec18fb57b3ba9a1dd846b747cc7c884.tar.xz linux-dev-71da61976ec18fb57b3ba9a1dd846b747cc7c884.zip | |
i40e: Fix TSO with more than 8 frags per segment issue
The hardware has some limitations the driver needs to adhere to,
that we found in extended testing.
1) no more than 8 descriptors per packet on the wire
2) no header can span more than 3 descriptors
If one of these events occurs, the hardware will generate an internal
error and freeze the Tx queue.
This patch linearizes the skb to avoid these situations.
Change-ID: I37dab7d3966e14895a9663ec4d0aaa8eb0d9e115
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/i40evf/i40e_txrx.h')
| -rw-r--r-- | drivers/net/ethernet/intel/i40evf/i40e_txrx.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/i40evf/i40e_txrx.h b/drivers/net/ethernet/intel/i40evf/i40e_txrx.h index 4e15903b2b6d..c950a038237c 100644 --- a/drivers/net/ethernet/intel/i40evf/i40e_txrx.h +++ b/drivers/net/ethernet/intel/i40evf/i40e_txrx.h @@ -112,6 +112,7 @@ enum i40e_dyn_idx_t { #define i40e_rx_desc i40e_32byte_rx_desc +#define I40E_MAX_BUFFER_TXD 8 #define I40E_MIN_TX_LEN 17 #define I40E_MAX_DATA_PER_TXD 8192 |