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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: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Mintz, Yuval 2017-06-04 13:31:08 +03:00 committed by David S. Miller
parent 1a850bfc9e
commit cbb8a12c08
4 changed files with 41 additions and 8 deletions
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21
drivers/net/ethernet/qlogic/qed/qed_l2.c
View File

@ -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);
} else {
qed_vf_get_num_rxqs(QED_LEADING_HWFN(cdev), &info->num_queues);
if (cdev->num_hwfns > 1) {
u8 queues = 0;
qed_vf_get_num_rxqs(&cdev->hwfns[1], &queues);
info->xdp_supported = true;
} else {
u16 total_cids = 0;
/* 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],

13
drivers/net/ethernet/qlogic/qed/qed_vf.c
View File

@ -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,

12
drivers/net/ethernet/qlogic/qed/qed_vf.h
View File

@ -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)
{
}

3
include/linux/qed/qed_eth_if.h
View File

@ -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 {