qed: IOV l2 functionality

This adds sufficient changes to allow VFs l2-configuration flows to work.

While the fastpath of the VF and the PF are meant to be exactly the same,
the configuration of the VF is done by the PF.
This diverges all VF-related configuration flows that originate from a VF,
making them pass through the VF->PF channel and adding sufficient logic
on the PF side to support them.

Signed-off-by: Yuval Mintz <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

Author: Yuval Mintz

drivers/net/ethernet/qlogic/qed/qed.h

@@ -532,6 +532,7 @@ struct qed_dev {
 };
 
 #define NUM_OF_VFS(dev)         MAX_NUM_VFS_BB
+#define NUM_OF_L2_QUEUES(dev)	MAX_NUM_L2_QUEUES_BB
 #define NUM_OF_SBS(dev)         MAX_SB_PER_PATH_BB
 #define NUM_OF_ENG_PFS(dev)     MAX_NUM_PFS_BB
 

drivers/net/ethernet/qlogic/qed/qed_dev.c

@@ -938,7 +938,12 @@ void qed_hw_stop_fastpath(struct qed_dev *cdev)
 
 	for_each_hwfn(cdev, j) {
 		struct qed_hwfn *p_hwfn = &cdev->hwfns[j];
-		struct qed_ptt *p_ptt   = p_hwfn->p_main_ptt;
+		struct qed_ptt *p_ptt = p_hwfn->p_main_ptt;
+
+		if (IS_VF(cdev)) {
+			qed_vf_pf_int_cleanup(p_hwfn);
+			continue;
+		}
 
 		DP_VERBOSE(p_hwfn,
 			   NETIF_MSG_IFDOWN,
@@ -962,6 +967,9 @@ void qed_hw_stop_fastpath(struct qed_dev *cdev)
 
 void qed_hw_start_fastpath(struct qed_hwfn *p_hwfn)
 {
+	if (IS_VF(p_hwfn->cdev))
+		return;
+
 	/* Re-open incoming traffic */
 	qed_wr(p_hwfn, p_hwfn->p_main_ptt,
 	       NIG_REG_RX_LLH_BRB_GATE_DNTFWD_PERPF, 0x0);