netdev - [PATCH net-next RFC 2/3] bnxt_en: Store min/max tx/rx rings for individual VFs.

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Message-Id: <1525864903-32619-3-git-send-email-michael.chan@broadcom.com>
Date:   Wed,  9 May 2018 07:21:42 -0400
From:   Michael Chan <michael.chan@...adcom.com>
To:     davem@...emloft.net
Cc:     netdev@...r.kernel.org
Subject: [PATCH net-next RFC 2/3] bnxt_en: Store min/max tx/rx rings for individual VFs.

With new infrastructure to configure queues differently for each VF,
we need to store the current min/max rx/tx rings for each VF.

Signed-off-by: Michael Chan <michael.chan@...adcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.h       |  5 +++++
 drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c | 23 +++++++++++++++++++----
 2 files changed, 24 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index 9b14eb6..2f5a23c 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
@@ -837,6 +837,10 @@ struct bnxt_vf_info {
 	u32	func_flags; /* func cfg flags */
 	u32	min_tx_rate;
 	u32	max_tx_rate;
+	u16	min_tx_rings;
+	u16	max_tx_rings;
+	u16	min_rx_rings;
+	u16	max_rx_rings;
 	void	*hwrm_cmd_req_addr;
 	dma_addr_t	hwrm_cmd_req_dma_addr;
 };
@@ -1351,6 +1355,7 @@ struct bnxt {
 #ifdef CONFIG_BNXT_SRIOV
 	int			nr_vfs;
 	struct bnxt_vf_info	vf;
+	struct hwrm_func_vf_resource_cfg_input vf_resc_cfg_input;
 	wait_queue_head_t	sriov_cfg_wait;
 	bool			sriov_cfg;
 #define BNXT_SRIOV_CFG_WAIT_TMO	msecs_to_jiffies(10000)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c
index a649108..489e534 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c
@@ -171,6 +171,10 @@ int bnxt_get_vf_config(struct net_device *dev, int vf_id,
 		ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
 	else
 		ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;
+	ivi->min_tx_queues = vf->min_tx_rings;
+	ivi->max_tx_queues = vf->max_tx_rings;
+	ivi->min_rx_queues = vf->min_rx_rings;
+	ivi->max_rx_queues = vf->max_rx_rings;
 
 	return 0;
 }
@@ -498,6 +502,8 @@ static int bnxt_hwrm_func_vf_resc_cfg(struct bnxt *bp, int num_vfs)
 
 	mutex_lock(&bp->hwrm_cmd_lock);
 	for (i = 0; i < num_vfs; i++) {
+		struct bnxt_vf_info *vf = &pf->vf[i];
+
 		req.vf_id = cpu_to_le16(pf->first_vf_id + i);
 		rc = _hwrm_send_message(bp, &req, sizeof(req),
 					HWRM_CMD_TIMEOUT);
@@ -506,7 +512,11 @@ static int bnxt_hwrm_func_vf_resc_cfg(struct bnxt *bp, int num_vfs)
 			break;
 		}
 		pf->active_vfs = i + 1;
-		pf->vf[i].fw_fid = pf->first_vf_id + i;
+		vf->fw_fid = pf->first_vf_id + i;
+		vf->min_tx_rings = le16_to_cpu(req.min_tx_rings);
+		vf->max_tx_rings = vf_tx_rings;
+		vf->min_rx_rings = le16_to_cpu(req.min_rx_rings);
+		vf->max_rx_rings = vf_rx_rings;
 	}
 	mutex_unlock(&bp->hwrm_cmd_lock);
 	if (pf->active_vfs) {
@@ -521,6 +531,7 @@ static int bnxt_hwrm_func_vf_resc_cfg(struct bnxt *bp, int num_vfs)
 		hw_resc->max_stat_ctxs -= le16_to_cpu(req.min_stat_ctx) * n;
 		hw_resc->max_vnics -= le16_to_cpu(req.min_vnics) * n;
 
+		memcpy(&bp->vf_resc_cfg_input, &req, sizeof(req));
 		rc = pf->active_vfs;
 	}
 	return rc;
@@ -585,6 +596,7 @@ static int bnxt_hwrm_func_cfg(struct bnxt *bp, int num_vfs)
 
 	mutex_lock(&bp->hwrm_cmd_lock);
 	for (i = 0; i < num_vfs; i++) {
+		struct bnxt_vf_info *vf = &pf->vf[i];
 		int vf_tx_rsvd = vf_tx_rings;
 
 		req.fid = cpu_to_le16(pf->first_vf_id + i);
@@ -593,12 +605,15 @@ static int bnxt_hwrm_func_cfg(struct bnxt *bp, int num_vfs)
 		if (rc)
 			break;
 		pf->active_vfs = i + 1;
-		pf->vf[i].fw_fid = le16_to_cpu(req.fid);
-		rc = __bnxt_hwrm_get_tx_rings(bp, pf->vf[i].fw_fid,
-					      &vf_tx_rsvd);
+		vf->fw_fid = le16_to_cpu(req.fid);
+		rc = __bnxt_hwrm_get_tx_rings(bp, vf->fw_fid, &vf_tx_rsvd);
 		if (rc)
 			break;
 		total_vf_tx_rings += vf_tx_rsvd;
+		vf->min_tx_rings = vf_tx_rsvd;
+		vf->max_tx_rings = vf_tx_rsvd;
+		vf->min_rx_rings = vf_rx_rings;
+		vf->max_rx_rings = vf_rx_rings;
 	}
 	mutex_unlock(&bp->hwrm_cmd_lock);
 	if (rc)
-- 
1.8.3.1