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authorJacob Keller <jacob.e.keller@intel.com>2015-06-03 16:31:08 -0700
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2015-06-17 14:21:18 -0700
commitfba341d5cab38db68eed061cf20e161d967795c6 (patch)
tree0baf674407f547efb993b7d33431b155c7a0fa73 /drivers/net/ethernet/intel
parenta38488f54004330071f4ec90c3cf52dc7646468e (diff)
fm10k: re-map all possible VF queues after a VFLR
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>
Diffstat (limited to 'drivers/net/ethernet/intel')
-rw-r--r--drivers/net/ethernet/intel/fm10k/fm10k_pf.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/fm10k/fm10k_pf.c b/drivers/net/ethernet/intel/fm10k/fm10k_pf.c
index 891e21874b2a..49c8ad647680 100644
--- a/drivers/net/ethernet/intel/fm10k/fm10k_pf.c
+++ b/drivers/net/ethernet/intel/fm10k/fm10k_pf.c
@@ -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;
}