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Commit cbb8a12c authored by Mintz, Yuval's avatar Mintz, Yuval Committed by David S. Miller
Browse files

qed: VF XDP support 



The final addition on the qed front -
 - VFs would now require their PFs to provide multiple CIDs
 - Based on the availability of connections from PF, determine whether
   XDP is feasible and share it with qede via dev_info.

Signed-off-by: default avatarYuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 1a850bfc

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

+15 −4
Original line number Diff line number Diff line
@@ -2119,15 +2119,26 @@ static int qed_fill_eth_dev_info(struct qed_dev *cdev, 


		ether_addr_copy(info->port_mac,

				cdev->hwfns[0].hw_info.hw_mac_addr);



		info->xdp_supported = true;

	} else {

		qed_vf_get_num_rxqs(QED_LEADING_HWFN(cdev), &info->num_queues);

		if (cdev->num_hwfns > 1) {

			u8 queues = 0;

		u16 total_cids = 0;



			qed_vf_get_num_rxqs(&cdev->hwfns[1], &queues);

		/* Determine queues &  XDP support */

		for_each_hwfn(cdev, i) {

			struct qed_hwfn *p_hwfn = &cdev->hwfns[i];

			u8 queues, cids;



			qed_vf_get_num_cids(p_hwfn, &cids);

			qed_vf_get_num_rxqs(p_hwfn, &queues);

			info->num_queues += queues;

			total_cids += cids;

		}



		/* Enable VF XDP in case PF guarntees sufficient connections */

		if (total_cids >= info->num_queues * 3)

			info->xdp_supported = true;



		qed_vf_get_num_vlan_filters(&cdev->hwfns[0],

					    (u8 *)&info->num_vlan_filters);

		qed_vf_get_num_mac_filters(&cdev->hwfns[0],

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

+10 −3
Original line number Diff line number Diff line
@@ -291,9 +291,11 @@ static int qed_vf_pf_acquire(struct qed_hwfn *p_hwfn) 
	req->vfdev_info.capabilities |= VFPF_ACQUIRE_CAP_100G;



	/* If we've mapped the doorbell bar, try using queue qids */

	if (p_iov->b_doorbell_bar)

	if (p_iov->b_doorbell_bar) {

		req->vfdev_info.capabilities |= VFPF_ACQUIRE_CAP_PHYSICAL_BAR |

						VFPF_ACQUIRE_CAP_QUEUE_QIDS;

		p_resc->num_cids = QED_ETH_VF_MAX_NUM_CIDS;

	}



	/* pf 2 vf bulletin board address */

	req->bulletin_addr = p_iov->bulletin.phys;
@@ -884,8 +886,8 @@ qed_vf_pf_txq_start(struct qed_hwfn *p_hwfn, 
	}



	DP_VERBOSE(p_hwfn, QED_MSG_IOV,

		   "Txq[0x%02x]: doorbell at %p [offset 0x%08x]\n",

		   qid, *pp_doorbell, resp->offset);

		   "Txq[0x%02x.%02x]: doorbell at %p [offset 0x%08x]\n",

		   qid, p_cid->qid_usage_idx, *pp_doorbell, resp->offset);

exit:

	qed_vf_pf_req_end(p_hwfn, rc);
@@ -1478,6 +1480,11 @@ void qed_vf_get_num_txqs(struct qed_hwfn *p_hwfn, u8 *num_txqs) 
	*num_txqs = p_hwfn->vf_iov_info->acquire_resp.resc.num_txqs;

}



void qed_vf_get_num_cids(struct qed_hwfn *p_hwfn, u8 *num_cids)

{

	*num_cids = p_hwfn->vf_iov_info->acquire_resp.resc.num_cids;

}



void qed_vf_get_port_mac(struct qed_hwfn *p_hwfn, u8 *port_mac)

{

	memcpy(port_mac,

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

+12 −0
Original line number Diff line number Diff line
@@ -731,6 +731,14 @@ void qed_vf_get_num_rxqs(struct qed_hwfn *p_hwfn, u8 *num_rxqs); 
 */

void qed_vf_get_num_txqs(struct qed_hwfn *p_hwfn, u8 *num_txqs);



/**

 * @brief Get number of available connections [both Rx and Tx] for VF

 *

 * @param p_hwfn

 * @param num_cids - allocated number of connections

 */

void qed_vf_get_num_cids(struct qed_hwfn *p_hwfn, u8 *num_cids);



/**

 * @brief Get port mac address for VF

 *
@@ -1010,6 +1018,10 @@ static inline void qed_vf_get_num_txqs(struct qed_hwfn *p_hwfn, u8 *num_txqs) 
{

}



static inline void qed_vf_get_num_cids(struct qed_hwfn *p_hwfn, u8 *num_cids)

{

}



static inline void qed_vf_get_port_mac(struct qed_hwfn *p_hwfn, u8 *port_mac)

{

}

include/linux/qed/qed_eth_if.h

+3 −0
Original line number Diff line number Diff line
@@ -73,6 +73,9 @@ struct qed_dev_eth_info { 


	/* Legacy VF - this affects the datapath, so qede has to know */

	bool is_legacy;



	/* Might depend on available resources [in case of VF] */

	bool xdp_supported;

};



struct qed_update_vport_rss_params {