be2net: SRIOV Queue distribution should factor in EQ-count of VFs

[cascardo/linux.git] / drivers / net / ethernet / emulex / benet / be_main.c

diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c
index 09e6f2c..62f6fbb 100644 (file)
--- a/drivers/net/ethernet/emulex/benet/be_main.c
+++ b/drivers/net/ethernet/emulex/benet/be_main.c
@@ -3792,18 +3792,15 @@ static u16 be_calculate_vf_qs(struct be_adapter *adapter, u16 num_vfs)
        struct be_resources res = adapter->pool_res;
        u16 num_vf_qs = 1;
 
-       /* Distribute the queue resources equally among the PF and it's VFs
+       /* Distribute the queue resources among the PF and it's VFs
         * Do not distribute queue resources in multi-channel configuration.
         */
        if (num_vfs && !be_is_mc(adapter)) {
-               /* If number of VFs requested is 8 less than max supported,
-                * assign 8 queue pairs to the PF and divide the remaining
-                * resources evenly among the VFs
-                */
-               if (num_vfs < (be_max_vfs(adapter) - 8))
-                       num_vf_qs = (res.max_rss_qs - 8) / num_vfs;
-               else
-                       num_vf_qs = res.max_rss_qs / num_vfs;
+                /* Divide the qpairs evenly among the VFs and the PF, capped
+                 * at VF-EQ-count. Any remainder qpairs belong to the PF.
+                 */
+               num_vf_qs = min(SH_VF_MAX_NIC_EQS,
+                               res.max_rss_qs / (num_vfs + 1));
 
                /* Skyhawk-R chip supports only MAX_RSS_IFACES RSS capable
                 * interfaces per port. Provide RSS on VFs, only if number