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qed: Assign a unique per-queue index to queue-cid

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When a queue-cid is allocated, assign an index inside that's
CID's queue-zone.

For PFs and VFS, this number is going to be unique and derive
from a per-queue-zone bitmap, while for PF's VFs queues the
number is currently going to constant; Later, we'd add the
capability of a VF to communicate such an index to its PF.

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 13:31:03 +03:00 committed by David S. Miller
parent 3946497aff
commit bbe3f233ec
4 changed files with 88 additions and 4 deletions
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62
drivers/net/ethernet/qlogic/qed/qed_l2.c
View File

@ -151,6 +151,50 @@ out_l2_info:
p_hwfn->p_l2_info = NULL;
}
static bool qed_eth_queue_qid_usage_add(struct qed_hwfn *p_hwfn,
struct qed_queue_cid *p_cid)
{
struct qed_l2_info *p_l2_info = p_hwfn->p_l2_info;
u16 queue_id = p_cid->rel.queue_id;
bool b_rc = true;
u8 first;
mutex_lock(&p_l2_info->lock);
if (queue_id > p_l2_info->queues) {
DP_NOTICE(p_hwfn,
"Requested to increase usage for qzone %04x out of %08x\n",
queue_id, p_l2_info->queues);
b_rc = false;
goto out;
}
first = (u8)find_first_zero_bit(p_l2_info->pp_qid_usage[queue_id],
MAX_QUEUES_PER_QZONE);
if (first >= MAX_QUEUES_PER_QZONE) {
b_rc = false;
goto out;
}
__set_bit(first, p_l2_info->pp_qid_usage[queue_id]);
p_cid->qid_usage_idx = first;
out:
mutex_unlock(&p_l2_info->lock);
return b_rc;
}
static void qed_eth_queue_qid_usage_del(struct qed_hwfn *p_hwfn,
struct qed_queue_cid *p_cid)
{
mutex_lock(&p_hwfn->p_l2_info->lock);
clear_bit(p_cid->qid_usage_idx,
p_hwfn->p_l2_info->pp_qid_usage[p_cid->rel.queue_id]);
mutex_unlock(&p_hwfn->p_l2_info->lock);
}
void qed_eth_queue_cid_release(struct qed_hwfn *p_hwfn,
struct qed_queue_cid *p_cid)
{
@ -158,6 +202,11 @@ void qed_eth_queue_cid_release(struct qed_hwfn *p_hwfn,
if ((p_cid->vfid == QED_QUEUE_CID_SELF) &&
IS_PF(p_hwfn->cdev))
qed_cxt_release_cid(p_hwfn, p_cid->cid);
/* For PF's VFs we maintain the index inside queue-zone in IOV */
if (p_cid->vfid == QED_QUEUE_CID_SELF)
qed_eth_queue_qid_usage_del(p_hwfn, p_cid);
vfree(p_cid);
}
@ -230,14 +279,25 @@ _qed_eth_queue_to_cid(struct qed_hwfn *p_hwfn,
}
out:
/* VF-images have provided the qid_usage_idx on their own.
* Otherwise, we need to allocate a unique one.
*/
if (!p_vf_params) {
if (!qed_eth_queue_qid_usage_add(p_hwfn, p_cid))
goto fail;
} else {
p_cid->qid_usage_idx = p_vf_params->qid_usage_idx;
}
DP_VERBOSE(p_hwfn,
QED_MSG_SP,
"opaque_fid: %04x CID %08x vport %02x [%02x] qzone %04x [%04x] stats %02x [%02x] SB %04x PI %02x\n",
"opaque_fid: %04x CID %08x vport %02x [%02x] qzone %04x.%02x [%04x] stats %02x [%02x] SB %04x PI %02x\n",
p_cid->opaque_fid,
p_cid->cid,
p_cid->rel.vport_id,
p_cid->abs.vport_id,
p_cid->rel.queue_id,
p_cid->qid_usage_idx,
p_cid->abs.queue_id,
p_cid->rel.stats_id,
p_cid->abs.stats_id, p_cid->sb_igu_id, p_cid->sb_idx);

7
drivers/net/ethernet/qlogic/qed/qed_l2.h
View File

@ -306,6 +306,7 @@ struct qed_queue_cid_vf_params {
*/
bool vf_legacy;
u8 qid_usage_idx;
};
struct qed_queue_cid {
@ -328,6 +329,12 @@ struct qed_queue_cid {
u8 vfid;
u8 vf_qid;
/* We need an additional index to differentiate between queues opened
* for same queue-zone, as VFs would have to communicate the info
* to the PF [otherwise PF has no way to differentiate].
*/
u8 qid_usage_idx;
/* Legacy VFs might have Rx producer located elsewhere */
bool b_legacy_vf;

20
drivers/net/ethernet/qlogic/qed/qed_sriov.c
View File

@ -1942,6 +1942,15 @@ static void qed_iov_vf_mbx_start_rxq_resp(struct qed_hwfn *p_hwfn,
qed_iov_send_response(p_hwfn, p_ptt, vf, length, status);
}
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;
}
static void qed_iov_vf_mbx_start_rxq(struct qed_hwfn *p_hwfn,
struct qed_ptt *p_ptt,
struct qed_vf_info *vf)
@ -1954,6 +1963,7 @@ static void qed_iov_vf_mbx_start_rxq(struct qed_hwfn *p_hwfn,
struct vfpf_start_rxq_tlv *req;
struct qed_sb_info sb_dummy;
bool b_legacy_vf = false;
u8 qid_usage_idx;
int rc;
req = &mbx->req_virt->start_rxq;
@ -1963,13 +1973,13 @@ static void qed_iov_vf_mbx_start_rxq(struct qed_hwfn *p_hwfn,
!qed_iov_validate_sb(p_hwfn, vf, req->hw_sb))
goto out;
/* Acquire a new queue-cid */
qid_usage_idx = qed_iov_vf_mbx_qid(p_hwfn, vf, false);
p_queue = &vf->vf_queues[req->rx_qid];
if (vf->acquire.vfdev_info.eth_fp_hsi_minor ==
ETH_HSI_VER_NO_PKT_LEN_TUNN)
b_legacy_vf = true;
/* Acquire a new queue-cid */
memset(&params, 0, sizeof(params));
params.queue_id = p_queue->fw_rx_qid;
params.vport_id = vf->vport_id;
@ -1984,6 +1994,7 @@ static void qed_iov_vf_mbx_start_rxq(struct qed_hwfn *p_hwfn,
vf_params.vfid = vf->relative_vf_id;
vf_params.vf_qid = (u8)req->rx_qid;
vf_params.vf_legacy = b_legacy_vf;
vf_params.qid_usage_idx = qid_usage_idx;
p_queue->p_rx_cid = qed_eth_queue_to_cid(p_hwfn, vf->opaque_fid,
&params, &vf_params);
if (!p_queue->p_rx_cid)
@ -2282,6 +2293,7 @@ static void qed_iov_vf_mbx_start_txq(struct qed_hwfn *p_hwfn,
struct qed_vf_q_info *p_queue;
struct qed_sb_info sb_dummy;
bool b_vf_legacy = false;
u8 qid_usage_idx;
int rc;
u16 pq;
@ -2293,13 +2305,14 @@ static void qed_iov_vf_mbx_start_txq(struct qed_hwfn *p_hwfn,
!qed_iov_validate_sb(p_hwfn, vf, req->hw_sb))
goto out;
/* Acquire a new queue-cid */
qid_usage_idx = qed_iov_vf_mbx_qid(p_hwfn, vf, true);
p_queue = &vf->vf_queues[req->tx_qid];
if (vf->acquire.vfdev_info.eth_fp_hsi_minor ==
ETH_HSI_VER_NO_PKT_LEN_TUNN)
b_vf_legacy = true;
/* Acquire a new queue-cid */
params.queue_id = p_queue->fw_tx_qid;
params.vport_id = vf->vport_id;
params.stats_id = vf->abs_vf_id + 0x10;
@ -2314,6 +2327,7 @@ static void qed_iov_vf_mbx_start_txq(struct qed_hwfn *p_hwfn,
vf_params.vfid = vf->relative_vf_id;
vf_params.vf_qid = (u8)req->tx_qid;
vf_params.vf_legacy = b_vf_legacy;
vf_params.qid_usage_idx = qid_usage_idx;
p_queue->p_tx_cid = qed_eth_queue_to_cid(p_hwfn,
vf->opaque_fid,

3
drivers/net/ethernet/qlogic/qed/qed_sriov.h
View File

@ -149,6 +149,9 @@ struct qed_iov_vf_mbx {
struct vfpf_first_tlv first_tlv;
};
#define QED_IOV_LEGACY_QID_RX (0)
#define QED_IOV_LEGACY_QID_TX (1)
struct qed_vf_q_info {
u16 fw_rx_qid;
struct qed_queue_cid *p_rx_cid;