openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

igb: A fix to VF TX rate limit 

There is a need to configure MMW_SIZE in register RTTBCNRM with a correct
value. For 82576 device, the value should be 0x14.

Signed-off-by: Lior Levy <lior.levy@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Lior Levy 2011-06-04 06:05:03 +00:00 committed by Jeff Kirsher
parent 7500673be3
commit f00b0da776
2 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/net/ethernet/intel/igb/e1000_regs.h
View File

@ -117,6 +117,7 @@
/* TX Rate Limit Registers */
#define E1000_RTTDQSEL 0x3604 /* Tx Desc Plane Queue Select - WO */
#define E1000_RTTBCNRM 0x3690 /* Tx BCN Rate-scheduler MMW */
#define E1000_RTTBCNRC 0x36B0 /* Tx BCN Rate-Scheduler Config - WO */
/* Split and Replication RX Control - RW */

5
drivers/net/ethernet/intel/igb/igb_main.c
View File

@ -6997,6 +6997,11 @@ static void igb_set_vf_rate_limit(struct e1000_hw *hw, int vf, int tx_rate,
}
wr32(E1000_RTTDQSEL, vf); /* vf X uses queue X */
/*
* Set global transmit compensation time to the MMW_SIZE in RTTBCNRM
* register. MMW_SIZE=0x014 if 9728-byte jumbo is supported.
*/
wr32(E1000_RTTBCNRM, 0x14);
wr32(E1000_RTTBCNRC, bcnrc_val);
}