AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

i40e: check for possible incorrect ipv6 checksum

Browse Source 
If the IPV6EXADD bit is set in the Rx descriptor status, there
was an optional extension header with an alternate IP address
detected.  The HW checksum offload doesn't handle the alternate
IP address correctly so likely comes up with the wrong answer.
Thus, if the bit is set we ignore the checksum offload value.

Change-ID: I70ff8d38cdcddccf44107691cae13d0c07c284c8
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Shannon Nelson 2013-12-21 05:44:46 +00:00 committed by Jeff Kirsher
parent 700bbf6c1f
commit 8ee75a8ed0
2 changed files with 7 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/net/ethernet/intel/i40e/i40e_txrx.c
View File

@ -892,6 +892,10 @@ static inline void i40e_rx_checksum(struct i40e_vsi *vsi,
rx_status & (1 << I40E_RX_DESC_STATUS_L3L4P_SHIFT)))
return;
/* likely incorrect csum if alternate IP extention headers found */
if (rx_status & (1 << I40E_RX_DESC_STATUS_IPV6EXADD_SHIFT))
return;
/* IP or L4 or outmost IP checksum error */
if (rx_error & ((1 << I40E_RX_DESC_ERROR_IPE_SHIFT) |
(1 << I40E_RX_DESC_ERROR_L4E_SHIFT) |

4
drivers/net/ethernet/intel/i40e/i40e_type.h
View File

@ -499,7 +499,9 @@ enum i40e_rx_desc_status_bits {
I40E_RX_DESC_STATUS_FLM_SHIFT = 11,
I40E_RX_DESC_STATUS_FLTSTAT_SHIFT = 12, /* 2 BITS */
I40E_RX_DESC_STATUS_LPBK_SHIFT = 14,
I40E_RX_DESC_STATUS_UDP_0_SHIFT = 16
I40E_RX_DESC_STATUS_IPV6EXADD_SHIFT = 15,
I40E_RX_DESC_STATUS_RESERVED_SHIFT = 16, /* 2 BITS */
I40E_RX_DESC_STATUS_UDP_0_SHIFT = 18
};
#define I40E_RXD_QW1_STATUS_TSYNINDX_SHIFT I40E_RX_DESC_STATUS_TSYNINDX_SHIFT