AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2024-12-20 13:50:18 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

fm10k: re-map all possible VF queues after a VFLR

Browse Source 
During initialization, the VF counts its rings by walking the TQDLOC
registers. This works only if the TQMAP/RQMAP registers are set to map
all of the out-of-bound rings back to the first one. This allows the VF
to cleanly detect when it has run out of queues. Update the PF code so
that it resets the empty TQMAP/RQMAP registers post-VFLR to prevent
innocent VF drivers from triggering malicious driver events.

Signed-off-by: Matthew Vick <matthew.vick@intel.com>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Jacob Keller 2015-06-03 16:31:08 -07:00 committed by Jeff Kirsher
parent a38488f540
commit fba341d5ca
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/net/ethernet/intel/fm10k/fm10k_pf.c
View File

@ -1046,6 +1046,12 @@ static s32 fm10k_iov_reset_resources_pf(struct fm10k_hw *hw,
fm10k_write_reg(hw, FM10K_RQMAP(qmap_idx + i), vf_q_idx + i);
}
/* repeat the first ring for all the remaining VF rings */
for (i = queues_per_pool; i < qmap_stride; i++) {
fm10k_write_reg(hw, FM10K_TQMAP(qmap_idx + i), vf_q_idx);
fm10k_write_reg(hw, FM10K_RQMAP(qmap_idx + i), vf_q_idx);
}
return 0;
}