qed: Multiple qzone queues for VFs

This adds the infrastructure for supporting VFs that want to open
multiple transmission queues on the same queue-zone.
At this point, there are no VFs that actually request this functionality,
but later patches would remedy that.

 a. VF and PF would communicate the capability during ACQUIRE;
    Legacy VFs would continue on behaving as they do today

 b. PF would communicate number of supported CIDs to the VF
    and would enforce said limitation

 c. Whenever VF passes a request for a given queue configuration
    it would also pass an associated index within said queue-zone
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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

@@ -2116,8 +2116,12 @@ int qed_cxt_set_pf_params(struct qed_hwfn *p_hwfn, u32 rdma_tasks)
 		struct qed_eth_pf_params *p_params =
 		    &p_hwfn->pf_params.eth_pf_params;
 
-		qed_cxt_set_proto_cid_count(p_hwfn, PROTOCOLID_ETH,
-					    p_params->num_cons, 1);
+			if (!p_params->num_vf_cons)
+				p_params->num_vf_cons =
+				    ETH_PF_PARAMS_VF_CONS_DEFAULT;
+			qed_cxt_set_proto_cid_count(p_hwfn, PROTOCOLID_ETH,
+						    p_params->num_cons,
+						    p_params->num_vf_cons);
 		p_hwfn->p_cxt_mngr->arfs_count = p_params->num_arfs_filters;
 		break;
 	}

drivers/net/ethernet/qlogic/qed/qed_l2.c

@@ -198,10 +198,10 @@ static void qed_eth_queue_qid_usage_del(struct qed_hwfn *p_hwfn,
 void qed_eth_queue_cid_release(struct qed_hwfn *p_hwfn,
 			       struct qed_queue_cid *p_cid)
 {
-	/* VFs' CIDs are 0-based in PF-view, and uninitialized on VF */
-	if ((p_cid->vfid == QED_QUEUE_CID_SELF) &&
-	    IS_PF(p_hwfn->cdev))
-		qed_cxt_release_cid(p_hwfn, p_cid->cid);
+	bool b_legacy_vf = !!(p_cid->vf_legacy & QED_QCID_LEGACY_VF_CID);
+
+	if (IS_PF(p_hwfn->cdev) && !b_legacy_vf)
+		_qed_cxt_release_cid(p_hwfn, p_cid->cid, p_cid->vfid);
 
 	/* For PF's VFs we maintain the index inside queue-zone in IOV */
 	if (p_cid->vfid == QED_QUEUE_CID_SELF)
@@ -319,18 +319,30 @@ qed_eth_queue_to_cid(struct qed_hwfn *p_hwfn,
 		     struct qed_queue_cid_vf_params *p_vf_params)
 {
 	struct qed_queue_cid *p_cid;
+	u8 vfid = QED_CXT_PF_CID;
 	bool b_legacy_vf = false;
 	u32 cid = 0;
 
-	/* Currently, PF doesn't need to allocate CIDs for any VF */
-	if (p_vf_params)
-		b_legacy_vf = true;
+	/* In case of legacy VFs, The CID can be derived from the additional
+	 * VF parameters - the VF assumes queue X uses CID X, so we can simply
+	 * use the vf_qid for this purpose as well.
+	 */
+	if (p_vf_params) {
+		vfid = p_vf_params->vfid;
+
+		if (p_vf_params->vf_legacy & QED_QCID_LEGACY_VF_CID) {
+			b_legacy_vf = true;
+			cid = p_vf_params->vf_qid;
+		}
+	}
+
 	/* Get a unique firmware CID for this queue, in case it's a PF.
 	 * VF's don't need a CID as the queue configuration will be done
 	 * by PF.
 	 */
 	if (IS_PF(p_hwfn->cdev) && !b_legacy_vf) {
-		if (qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_ETH, &cid)) {
+		if (_qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_ETH,
+					 &cid, vfid)) {
 			DP_NOTICE(p_hwfn, "Failed to acquire cid\n");
 			return NULL;
 		}
@@ -339,7 +351,7 @@ qed_eth_queue_to_cid(struct qed_hwfn *p_hwfn,
 	p_cid = _qed_eth_queue_to_cid(p_hwfn, opaque_fid, cid,
 				      p_params, b_is_rx, p_vf_params);
 	if (!p_cid && IS_PF(p_hwfn->cdev) && !b_legacy_vf)
-		qed_cxt_release_cid(p_hwfn, cid);
+		_qed_cxt_release_cid(p_hwfn, cid, vfid);
 
 	return p_cid;
 }

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

@@ -47,12 +47,16 @@
 
 static u8 qed_vf_calculate_legacy(struct qed_vf_info *p_vf)
 {
-	u8 legacy = QED_QCID_LEGACY_VF_CID;
+	u8 legacy = 0;
 
 	if (p_vf->acquire.vfdev_info.eth_fp_hsi_minor ==
 	    ETH_HSI_VER_NO_PKT_LEN_TUNN)
 		legacy |= QED_QCID_LEGACY_VF_RX_PROD;
 
+	if (!(p_vf->acquire.vfdev_info.capabilities &
+	      VFPF_ACQUIRE_CAP_QUEUE_QIDS))
+		legacy |= QED_QCID_LEGACY_VF_CID;
+
 	return legacy;
 }
 
@@ -1413,6 +1417,10 @@ static u8 qed_iov_vf_mbx_acquire_resc(struct qed_hwfn *p_hwfn,
 	p_resp->num_vlan_filters = min_t(u8, p_vf->num_vlan_filters,
 					 p_req->num_vlan_filters);
 
+	p_resp->num_cids =
+	    min_t(u8, p_req->num_cids,
+		  p_hwfn->pf_params.eth_pf_params.num_vf_cons);
+
 	/* This isn't really needed/enforced, but some legacy VFs might depend
 	 * on the correct filling of this field.
 	 */
@@ -1424,10 +1432,11 @@ static u8 qed_iov_vf_mbx_acquire_resc(struct qed_hwfn *p_hwfn,
 	    p_resp->num_sbs < p_req->num_sbs ||
 	    p_resp->num_mac_filters < p_req->num_mac_filters ||
 	    p_resp->num_vlan_filters < p_req->num_vlan_filters ||
-	    p_resp->num_mc_filters < p_req->num_mc_filters) {
+	    p_resp->num_mc_filters < p_req->num_mc_filters ||
+	    p_resp->num_cids < p_req->num_cids) {
 		DP_VERBOSE(p_hwfn,
 			   QED_MSG_IOV,
-			   "VF[%d] - Insufficient resources: rxq [%02x/%02x] txq [%02x/%02x] sbs [%02x/%02x] mac [%02x/%02x] vlan [%02x/%02x] mc [%02x/%02x]\n",
+			   "VF[%d] - Insufficient resources: rxq [%02x/%02x] txq [%02x/%02x] sbs [%02x/%02x] mac [%02x/%02x] vlan [%02x/%02x] mc [%02x/%02x] cids [%02x/%02x]\n",
 			   p_vf->abs_vf_id,
 			   p_req->num_rxqs,
 			   p_resp->num_rxqs,
@@ -1439,7 +1448,9 @@ static u8 qed_iov_vf_mbx_acquire_resc(struct qed_hwfn *p_hwfn,
 			   p_resp->num_mac_filters,
 			   p_req->num_vlan_filters,
 			   p_resp->num_vlan_filters,
-			   p_req->num_mc_filters, p_resp->num_mc_filters);
+			   p_req->num_mc_filters,
+			   p_resp->num_mc_filters,
+			   p_req->num_cids, p_resp->num_cids);
 
 		/* Some legacy OSes are incapable of correctly handling this
 		 * failure.
@@ -1555,6 +1566,12 @@ static void qed_iov_vf_mbx_acquire(struct qed_hwfn *p_hwfn,
 	if (p_hwfn->cdev->num_hwfns > 1)
 		pfdev_info->capabilities |= PFVF_ACQUIRE_CAP_100G;
 
+	/* Share our ability to use multiple queue-ids only with VFs
+	 * that request it.
+	 */
+	if (req->vfdev_info.capabilities & VFPF_ACQUIRE_CAP_QUEUE_QIDS)
+		pfdev_info->capabilities |= PFVF_ACQUIRE_CAP_QUEUE_QIDS;
+
 	qed_iov_vf_mbx_acquire_stats(p_hwfn, &pfdev_info->stats_info);
 
 	memcpy(pfdev_info->port_mac, p_hwfn->hw_info.hw_mac_addr, ETH_ALEN);
@@ -1977,10 +1994,37 @@ static void qed_iov_vf_mbx_start_rxq_resp(struct qed_hwfn *p_hwfn,
 static u8 qed_iov_vf_mbx_qid(struct qed_hwfn *p_hwfn,
 			     struct qed_vf_info *p_vf, bool b_is_tx)
 {
-	if (b_is_tx)
-		return QED_IOV_LEGACY_QID_TX;
-	else
-		return QED_IOV_LEGACY_QID_RX;
+	struct qed_iov_vf_mbx *p_mbx = &p_vf->vf_mbx;
+	struct vfpf_qid_tlv *p_qid_tlv;
+
+	/* Search for the qid if the VF published its going to provide it */
+	if (!(p_vf->acquire.vfdev_info.capabilities &
+	      VFPF_ACQUIRE_CAP_QUEUE_QIDS)) {
+		if (b_is_tx)
+			return QED_IOV_LEGACY_QID_TX;
+		else
+			return QED_IOV_LEGACY_QID_RX;
+	}
+
+	p_qid_tlv = (struct vfpf_qid_tlv *)
+		    qed_iov_search_list_tlvs(p_hwfn, p_mbx->req_virt,
+					     CHANNEL_TLV_QID);
+	if (!p_qid_tlv) {
+		DP_VERBOSE(p_hwfn, QED_MSG_IOV,
+			   "VF[%2x]: Failed to provide qid\n",
+			   p_vf->relative_vf_id);
+
+		return QED_IOV_QID_INVALID;
+	}
+
+	if (p_qid_tlv->qid >= MAX_QUEUES_PER_QZONE) {
+		DP_VERBOSE(p_hwfn, QED_MSG_IOV,
+			   "VF[%02x]: Provided qid out-of-bounds %02x\n",
+			   p_vf->relative_vf_id, p_qid_tlv->qid);
+		return QED_IOV_QID_INVALID;
+	}
+
+	return p_qid_tlv->qid;
 }
 
 static void qed_iov_vf_mbx_start_rxq(struct qed_hwfn *p_hwfn,
@@ -2006,7 +2050,12 @@ static void qed_iov_vf_mbx_start_rxq(struct qed_hwfn *p_hwfn,
 		goto out;
 
 	qid_usage_idx = qed_iov_vf_mbx_qid(p_hwfn, vf, false);
+	if (qid_usage_idx == QED_IOV_QID_INVALID)
+		goto out;
+
 	p_queue = &vf->vf_queues[req->rx_qid];
+	if (p_queue->cids[qid_usage_idx].p_cid)
+		goto out;
 
 	vf_legacy = qed_vf_calculate_legacy(vf);
 
@@ -2332,12 +2381,17 @@ static void qed_iov_vf_mbx_start_txq(struct qed_hwfn *p_hwfn,
 	req = &mbx->req_virt->start_txq;
 
 	if (!qed_iov_validate_txq(p_hwfn, vf, req->tx_qid,
-				  QED_IOV_VALIDATE_Q_DISABLE) ||
+				  QED_IOV_VALIDATE_Q_NA) ||
 	    !qed_iov_validate_sb(p_hwfn, vf, req->hw_sb))
 		goto out;
 
 	qid_usage_idx = qed_iov_vf_mbx_qid(p_hwfn, vf, true);
+	if (qid_usage_idx == QED_IOV_QID_INVALID)
+		goto out;
+
 	p_queue = &vf->vf_queues[req->tx_qid];
+	if (p_queue->cids[qid_usage_idx].p_cid)
+		goto out;
 
 	vf_legacy = qed_vf_calculate_legacy(vf);
 
@@ -2388,17 +2442,33 @@ static int qed_iov_vf_stop_rxqs(struct qed_hwfn *p_hwfn,
 	struct qed_vf_queue *p_queue;
 	int rc = 0;
 
-	if (!qed_iov_validate_rxq(p_hwfn, vf, rxq_id,
-				  QED_IOV_VALIDATE_Q_ENABLE)) {
+	if (!qed_iov_validate_rxq(p_hwfn, vf, rxq_id, QED_IOV_VALIDATE_Q_NA)) {
 		DP_VERBOSE(p_hwfn,
 			   QED_MSG_IOV,
-			   "VF[%d] Tried Closing Rx 0x%04x which is inactive\n",
-			   vf->relative_vf_id, rxq_id);
+			   "VF[%d] Tried Closing Rx 0x%04x.%02x which is inactive\n",
+			   vf->relative_vf_id, rxq_id, qid_usage_idx);
 		return -EINVAL;
 	}
 
 	p_queue = &vf->vf_queues[rxq_id];
 
+	/* We've validated the index and the existence of the active RXQ -
+	 * now we need to make sure that it's using the correct qid.
+	 */
+	if (!p_queue->cids[qid_usage_idx].p_cid ||
+	    p_queue->cids[qid_usage_idx].b_is_tx) {
+		struct qed_queue_cid *p_cid;
+
+		p_cid = qed_iov_get_vf_rx_queue_cid(p_queue);
+		DP_VERBOSE(p_hwfn,
+			   QED_MSG_IOV,
+			   "VF[%d] - Tried Closing Rx 0x%04x.%02x, but Rx is at %04x.%02x\n",
+			   vf->relative_vf_id,
+			   rxq_id, qid_usage_idx, rxq_id, p_cid->qid_usage_idx);
+		return -EINVAL;
+	}
+
+	/* Now that we know we have a valid Rx-queue - close it */
 	rc = qed_eth_rx_queue_stop(p_hwfn,
 				   p_queue->cids[qid_usage_idx].p_cid,
 				   false, cqe_completion);
@@ -2418,11 +2488,13 @@ static int qed_iov_vf_stop_txqs(struct qed_hwfn *p_hwfn,
 	struct qed_vf_queue *p_queue;
 	int rc = 0;
 
-	if (!qed_iov_validate_txq(p_hwfn, vf, txq_id,
-				  QED_IOV_VALIDATE_Q_ENABLE))
+	if (!qed_iov_validate_txq(p_hwfn, vf, txq_id, QED_IOV_VALIDATE_Q_NA))
 		return -EINVAL;
 
 	p_queue = &vf->vf_queues[txq_id];
+	if (!p_queue->cids[qid_usage_idx].p_cid ||
+	    !p_queue->cids[qid_usage_idx].b_is_tx)
+		return -EINVAL;
 
 	rc = qed_eth_tx_queue_stop(p_hwfn, p_queue->cids[qid_usage_idx].p_cid);
 	if (rc)
@@ -2458,6 +2530,8 @@ static void qed_iov_vf_mbx_stop_rxqs(struct qed_hwfn *p_hwfn,
 
 	/* Find which qid-index is associated with the queue */
 	qid_usage_idx = qed_iov_vf_mbx_qid(p_hwfn, vf, false);
+	if (qid_usage_idx == QED_IOV_QID_INVALID)
+		goto out;
 
 	rc = qed_iov_vf_stop_rxqs(p_hwfn, vf, req->rx_qid,
 				  qid_usage_idx, req->cqe_completion);
@@ -2494,6 +2568,8 @@ static void qed_iov_vf_mbx_stop_txqs(struct qed_hwfn *p_hwfn,
 
 	/* Find which qid-index is associated with the queue */
 	qid_usage_idx = qed_iov_vf_mbx_qid(p_hwfn, vf, true);
+	if (qid_usage_idx == QED_IOV_QID_INVALID)
+		goto out;
 
 	rc = qed_iov_vf_stop_txqs(p_hwfn, vf, req->tx_qid, qid_usage_idx);
 	if (!rc)
@@ -2524,15 +2600,35 @@ static void qed_iov_vf_mbx_update_rxqs(struct qed_hwfn *p_hwfn,
 	complete_event_flg = !!(req->flags & VFPF_RXQ_UPD_COMPLETE_EVENT_FLAG);
 
 	qid_usage_idx = qed_iov_vf_mbx_qid(p_hwfn, vf, false);
+	if (qid_usage_idx == QED_IOV_QID_INVALID)
+		goto out;
 
-	/* Validate inputs */
-	for (i = req->rx_qid; i < req->rx_qid + req->num_rxqs; i++)
+	/* There shouldn't exist a VF that uses queue-qids yet uses this
+	 * API with multiple Rx queues. Validate this.
+	 */
+	if ((vf->acquire.vfdev_info.capabilities &
+	     VFPF_ACQUIRE_CAP_QUEUE_QIDS) && req->num_rxqs != 1) {
+		DP_VERBOSE(p_hwfn, QED_MSG_IOV,
+			   "VF[%d] supports QIDs but sends multiple queues\n",
+			   vf->relative_vf_id);
+		goto out;
+	}
+
+	/* Validate inputs - for the legacy case this is still true since
+	 * qid_usage_idx for each Rx queue would be LEGACY_QID_RX.
+	 */
+	for (i = req->rx_qid; i < req->rx_qid + req->num_rxqs; i++) {
 		if (!qed_iov_validate_rxq(p_hwfn, vf, i,
-					  QED_IOV_VALIDATE_Q_ENABLE)) {
-			DP_INFO(p_hwfn, "VF[%d]: Incorrect Rxqs [%04x, %02x]\n",
-				vf->relative_vf_id, req->rx_qid, req->num_rxqs);
+					  QED_IOV_VALIDATE_Q_NA) ||
+		    !vf->vf_queues[i].cids[qid_usage_idx].p_cid ||
+		    vf->vf_queues[i].cids[qid_usage_idx].b_is_tx) {
+			DP_VERBOSE(p_hwfn, QED_MSG_IOV,
+				   "VF[%d]: Incorrect Rxqs [%04x, %02x]\n",
+				   vf->relative_vf_id, req->rx_qid,
+				   req->num_rxqs);
 			goto out;
 		}
+	}
 
 	/* Prepare the handlers */
 	for (i = 0; i < req->num_rxqs; i++) {

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

@@ -151,6 +151,7 @@ struct qed_iov_vf_mbx {
 
 #define QED_IOV_LEGACY_QID_RX (0)
 #define QED_IOV_LEGACY_QID_TX (1)
+#define QED_IOV_QID_INVALID (0xFE)
 
 struct qed_vf_queue_cid {
 	bool b_is_tx;

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

@@ -153,6 +153,22 @@ static int qed_send_msg2pf(struct qed_hwfn *p_hwfn, u8 *done, u32 resp_size)
 	return rc;
 }
 
+static void qed_vf_pf_add_qid(struct qed_hwfn *p_hwfn,
+			      struct qed_queue_cid *p_cid)
+{
+	struct qed_vf_iov *p_iov = p_hwfn->vf_iov_info;
+	struct vfpf_qid_tlv *p_qid_tlv;
+
+	/* Only add QIDs for the queue if it was negotiated with PF */
+	if (!(p_iov->acquire_resp.pfdev_info.capabilities &
+	      PFVF_ACQUIRE_CAP_QUEUE_QIDS))
+		return;
+
+	p_qid_tlv = qed_add_tlv(p_hwfn, &p_iov->offset,
+				CHANNEL_TLV_QID, sizeof(*p_qid_tlv));
+	p_qid_tlv->qid = p_cid->qid_usage_idx;
+}
+
 #define VF_ACQUIRE_THRESH 3
 static void qed_vf_pf_acquire_reduce_resc(struct qed_hwfn *p_hwfn,
 					  struct vf_pf_resc_request *p_req,
@@ -160,7 +176,7 @@ static void qed_vf_pf_acquire_reduce_resc(struct qed_hwfn *p_hwfn,
 {
 	DP_VERBOSE(p_hwfn,
 		   QED_MSG_IOV,
-		   "PF unwilling to fullill resource request: rxq [%02x/%02x] txq [%02x/%02x] sbs [%02x/%02x] mac [%02x/%02x] vlan [%02x/%02x] mc [%02x/%02x]. Try PF recommended amount\n",
+		   "PF unwilling to fullill resource request: rxq [%02x/%02x] txq [%02x/%02x] sbs [%02x/%02x] mac [%02x/%02x] vlan [%02x/%02x] mc [%02x/%02x] cids [%02x/%02x]. Try PF recommended amount\n",
 		   p_req->num_rxqs,
 		   p_resp->num_rxqs,
 		   p_req->num_rxqs,
@@ -171,7 +187,8 @@ static void qed_vf_pf_acquire_reduce_resc(struct qed_hwfn *p_hwfn,
 		   p_resp->num_mac_filters,
 		   p_req->num_vlan_filters,
 		   p_resp->num_vlan_filters,
-		   p_req->num_mc_filters, p_resp->num_mc_filters);
+		   p_req->num_mc_filters,
+		   p_resp->num_mc_filters, p_req->num_cids, p_resp->num_cids);
 
 	/* humble our request */
 	p_req->num_txqs = p_resp->num_txqs;
@@ -180,6 +197,7 @@ static void qed_vf_pf_acquire_reduce_resc(struct qed_hwfn *p_hwfn,
 	p_req->num_mac_filters = p_resp->num_mac_filters;
 	p_req->num_vlan_filters = p_resp->num_vlan_filters;
 	p_req->num_mc_filters = p_resp->num_mc_filters;
+	p_req->num_cids = p_resp->num_cids;
 }
 
 static int qed_vf_pf_acquire(struct qed_hwfn *p_hwfn)
@@ -204,6 +222,7 @@ static int qed_vf_pf_acquire(struct qed_hwfn *p_hwfn)
 	p_resc->num_sbs = QED_MAX_VF_CHAINS_PER_PF;
 	p_resc->num_mac_filters = QED_ETH_VF_NUM_MAC_FILTERS;
 	p_resc->num_vlan_filters = QED_ETH_VF_NUM_VLAN_FILTERS;
+	p_resc->num_cids = QED_ETH_VF_DEFAULT_NUM_CIDS;
 
 	req->vfdev_info.os_type = VFPF_ACQUIRE_OS_LINUX;
 	req->vfdev_info.fw_major = FW_MAJOR_VERSION;
@@ -307,6 +326,13 @@ static int qed_vf_pf_acquire(struct qed_hwfn *p_hwfn)
 	if (req->vfdev_info.capabilities & VFPF_ACQUIRE_CAP_PRE_FP_HSI)
 		p_iov->b_pre_fp_hsi = true;
 
+	/* In case PF doesn't support multi-queue Tx, update the number of
+	 * CIDs to reflect the number of queues [older PFs didn't fill that
+	 * field].
+	 */
+	if (!(resp->pfdev_info.capabilities & PFVF_ACQUIRE_CAP_QUEUE_QIDS))
+		resp->resc.num_cids = resp->resc.num_rxqs + resp->resc.num_txqs;
+
 	/* Update bulletin board size with response from PF */
 	p_iov->bulletin.size = resp->bulletin_size;
 
@@ -609,6 +635,9 @@ qed_vf_pf_rxq_start(struct qed_hwfn *p_hwfn,
 		__internal_ram_wr(p_hwfn, *pp_prod, sizeof(u32),
 				  (u32 *)(&init_prod_val));
 	}
+
+	qed_vf_pf_add_qid(p_hwfn, p_cid);
+
 	/* add list termination tlv */
 	qed_add_tlv(p_hwfn, &p_iov->offset,
 		    CHANNEL_TLV_LIST_END, sizeof(struct channel_list_end_tlv));
@@ -657,6 +686,8 @@ int qed_vf_pf_rxq_stop(struct qed_hwfn *p_hwfn,
 	req->num_rxqs = 1;
 	req->cqe_completion = cqe_completion;
 
+	qed_vf_pf_add_qid(p_hwfn, p_cid);
+
 	/* add list termination tlv */
 	qed_add_tlv(p_hwfn, &p_iov->offset,
 		    CHANNEL_TLV_LIST_END, sizeof(struct channel_list_end_tlv));
@@ -700,6 +731,8 @@ qed_vf_pf_txq_start(struct qed_hwfn *p_hwfn,
 	req->hw_sb = p_cid->sb_igu_id;
 	req->sb_index = p_cid->sb_idx;
 
+	qed_vf_pf_add_qid(p_hwfn, p_cid);
+
 	/* add list termination tlv */
 	qed_add_tlv(p_hwfn, &p_iov->offset,
 		    CHANNEL_TLV_LIST_END, sizeof(struct channel_list_end_tlv));
@@ -749,6 +782,8 @@ int qed_vf_pf_txq_stop(struct qed_hwfn *p_hwfn, struct qed_queue_cid *p_cid)
 	req->tx_qid = p_cid->rel.queue_id;
 	req->num_txqs = 1;
 
+	qed_vf_pf_add_qid(p_hwfn, p_cid);
+
 	/* add list termination tlv */
 	qed_add_tlv(p_hwfn, &p_iov->offset,
 		    CHANNEL_TLV_LIST_END, sizeof(struct channel_list_end_tlv));

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

@@ -46,7 +46,8 @@ struct vf_pf_resc_request {
 	u8 num_mac_filters;
 	u8 num_vlan_filters;
 	u8 num_mc_filters;
-	u16 padding;
+	u8 num_cids;
+	u8 padding;
 };
 
 struct hw_sb_info {
@@ -113,6 +114,11 @@ struct vfpf_acquire_tlv {
 	struct vf_pf_vfdev_info {
 #define VFPF_ACQUIRE_CAP_PRE_FP_HSI     (1 << 0) /* VF pre-FP hsi version */
 #define VFPF_ACQUIRE_CAP_100G		(1 << 1) /* VF can support 100g */
+	/* A requirement for supporting multi-Tx queues on a single queue-zone,
+	 * VF would pass qids as additional information whenever passing queue
+	 * references.
+	 */
+#define VFPF_ACQUIRE_CAP_QUEUE_QIDS     BIT(2)
 		u64 capabilities;
 		u8 fw_major;
 		u8 fw_minor;
@@ -185,6 +191,9 @@ struct pfvf_acquire_resp_tlv {
  */
 #define PFVF_ACQUIRE_CAP_POST_FW_OVERRIDE	BIT(2)
 
+	/* PF expects queues to be received with additional qids */
+#define PFVF_ACQUIRE_CAP_QUEUE_QIDS             BIT(3)
+
 		u16 db_size;
 		u8 indices_per_sb;
 		u8 os_type;
@@ -221,7 +230,8 @@ struct pfvf_acquire_resp_tlv {
 		u8 num_mac_filters;
 		u8 num_vlan_filters;
 		u8 num_mc_filters;
-		u8 padding[2];
+		u8 num_cids;
+		u8 padding;
 	} resc;
 
 	u32 bulletin_size;
@@ -234,6 +244,16 @@ struct pfvf_start_queue_resp_tlv {
 	u8 padding[4];
 };
 
+/* Extended queue information - additional index for reference inside qzone.
+ * If commmunicated between VF/PF, each TLV relating to queues should be
+ * extended by one such [or have a future base TLV that already contains info].
+ */
+struct vfpf_qid_tlv {
+	struct channel_tlv tl;
+	u8 qid;
+	u8 padding[3];
+};
+
 /* Setup Queue */
 struct vfpf_start_rxq_tlv {
 	struct vfpf_first_tlv first_tlv;
@@ -597,6 +617,8 @@ enum {
 	CHANNEL_TLV_VPORT_UPDATE_ACCEPT_ANY_VLAN,
 	CHANNEL_TLV_VPORT_UPDATE_SGE_TPA,
 	CHANNEL_TLV_UPDATE_TUNN_PARAM,
+	CHANNEL_TLV_RESERVED,
+	CHANNEL_TLV_QID,
 	CHANNEL_TLV_MAX,
 
 	/* Required for iterating over vport-update tlvs.
@@ -605,6 +627,12 @@ enum {
 	CHANNEL_TLV_VPORT_UPDATE_MAX = CHANNEL_TLV_VPORT_UPDATE_SGE_TPA + 1,
 };
 
+/* Default number of CIDs [total of both Rx and Tx] to be requested
+ * by default, and maximum possible number.
+ */
+#define QED_ETH_VF_DEFAULT_NUM_CIDS (32)
+#define QED_ETH_VF_MAX_NUM_CIDS (250)
+
 /* This data is held in the qed_hwfn structure for VFs only. */
 struct qed_vf_iov {
 	union vfpf_tlvs *vf2pf_request;

include/linux/qed/qed_if.h

@@ -185,6 +185,10 @@ struct qed_eth_pf_params {
 	 */
 	u16 num_cons;
 
+	/* per-VF number of CIDs */
+	u8 num_vf_cons;
+#define ETH_PF_PARAMS_VF_CONS_DEFAULT	(32)
+
 	/* To enable arfs, previous to HW-init a positive number needs to be
 	 * set [as filters require allocated searcher ILT memory].
 	 * This will set the maximal number of configured steering-filters.