[net-next PATCH v7 06/10] octeontx2-pf: Get VF stats via representor

Geetha sowjanya
2024-06-28T13:35:50Z

Adds support to export VF port statistics via representor
netdev. Defines new mbox "NIX_LF_STATS" to fetch VF hw stats.

Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Reviewed-by: Simon Horman <horms@kernel.org>
---
.../net/ethernet/marvell/octeontx2/af/mbox.h | 32 +++++++++
.../ethernet/marvell/octeontx2/af/rvu_rep.c | 43 ++++++++++++
.../net/ethernet/marvell/octeontx2/nic/rep.c | 65 +++++++++++++++++++
.../net/ethernet/marvell/octeontx2/nic/rep.h | 14 ++++
4 files changed, 154 insertions(+)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
index a7c32f1cc924..d293a3c35b6b 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
@@ -321,6 +321,7 @@ M(NIX_MCAST_GRP_DESTROY, 0x802c, nix_mcast_grp_destroy, nix_mcast_grp_destroy_re
M(NIX_MCAST_GRP_UPDATE, 0x802d, nix_mcast_grp_update, \
nix_mcast_grp_update_req, \
nix_mcast_grp_update_rsp) \
+M(NIX_LF_STATS, 0x802e, nix_lf_stats, nix_stats_req, nix_stats_rsp) \
/* MCS mbox IDs (range 0xA000 - 0xBFFF) */ \
M(MCS_ALLOC_RESOURCES, 0xa000, mcs_alloc_resources, mcs_alloc_rsrc_req, \
mcs_alloc_rsrc_rsp) \
@@ -1366,6 +1367,37 @@ struct nix_bandprof_get_hwinfo_rsp {
u32 policer_timeunit;
};

+struct nix_stats_req {
+ struct mbox_msghdr hdr;
+ u8 reset;
+ u16 pcifunc;
+ u64 rsvd;
+};
+
+struct nix_stats_rsp {
+ struct mbox_msghdr hdr;
+ u16 pcifunc;
+ struct {
+ u64 octs;
+ u64 ucast;
+ u64 bcast;
+ u64 mcast;
+ u64 drop;
+ u64 drop_octs;
+ u64 drop_mcast;
+ u64 drop_bcast;
+ u64 err;
+ u64 rsvd[5];
+ } rx;
+ struct {
+ u64 ucast;
+ u64 bcast;
+ u64 mcast;
+ u64 drop;
+ u64 octs;
+ } tx;
+};
+
/* NPC mbox message structs */

#define NPC_MCAM_ENTRY_INVALID 0xFFFF
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c
index 5f2e2cbd165a..6bc867dea42e 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c
@@ -13,6 +13,49 @@
#include "rvu.h"
#include "rvu_reg.h"

+#define RVU_LF_RX_STATS(reg) \
+ rvu_read64(rvu, blkaddr, NIX_AF_LFX_RX_STATX(nixlf, reg))
+
+#define RVU_LF_TX_STATS(reg) \
+ rvu_read64(rvu, blkaddr, NIX_AF_LFX_TX_STATX(nixlf, reg))
+
+int rvu_mbox_handler_nix_lf_stats(struct rvu *rvu,
+ struct nix_stats_req *req,
+ struct nix_stats_rsp *rsp)
+{
+ u16 pcifunc = req->pcifunc;
+ int nixlf, blkaddr, err;
+ struct msg_req rst_req;
+ struct msg_rsp rst_rsp;
+
+ err = nix_get_nixlf(rvu, pcifunc, &nixlf, &blkaddr);
+ if (err)
+ return 0;
+
+ if (req->reset) {
+ rst_req.hdr.pcifunc = pcifunc;
+ return rvu_mbox_handler_nix_stats_rst(rvu, &rst_req, &rst_rsp);
+ }
+ rsp->rx.octs = RVU_LF_RX_STATS(RX_OCTS);
+ rsp->rx.ucast = RVU_LF_RX_STATS(RX_UCAST);
+ rsp->rx.bcast = RVU_LF_RX_STATS(RX_BCAST);
+ rsp->rx.mcast = RVU_LF_RX_STATS(RX_MCAST);
+ rsp->rx.drop = RVU_LF_RX_STATS(RX_DROP);
+ rsp->rx.err = RVU_LF_RX_STATS(RX_ERR);
+ rsp->rx.drop_octs = RVU_LF_RX_STATS(RX_DROP_OCTS);
+ rsp->rx.drop_mcast = RVU_LF_RX_STATS(RX_DRP_MCAST);
+ rsp->rx.drop_bcast = RVU_LF_RX_STATS(RX_DRP_BCAST);
+
+ rsp->tx.octs = RVU_LF_TX_STATS(TX_OCTS);
+ rsp->tx.ucast = RVU_LF_TX_STATS(TX_UCAST);
+ rsp->tx.bcast = RVU_LF_TX_STATS(TX_BCAST);
+ rsp->tx.mcast = RVU_LF_TX_STATS(TX_MCAST);
+ rsp->tx.drop = RVU_LF_TX_STATS(TX_DROP);
+
+ rsp->pcifunc = req->pcifunc;
+ return 0;
+}
+
static u16 rvu_rep_get_vlan_id(struct rvu *rvu, u16 pcifunc)
{
int id;
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/rep.c b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
index b993b03622dd..d4e90b13db71 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
@@ -28,6 +28,68 @@ MODULE_DESCRIPTION(DRV_STRING);
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(pci, rvu_rep_id_table);

+static void rvu_rep_get_stats(struct work_struct *work)
+{
+ struct delayed_work *del_work = to_delayed_work(work);
+ struct nix_stats_req *req;
+ struct nix_stats_rsp *rsp;
+ struct rep_stats *stats;
+ struct otx2_nic *priv;
+ struct rep_dev *rep;
+ int err;
+
+ rep = container_of(del_work, struct rep_dev, stats_wrk);
+ priv = rep->mdev;
+
+ mutex_lock(&priv->mbox.lock);
+ req = otx2_mbox_alloc_msg_nix_lf_stats(&priv->mbox);
+ if (!req) {
+ mutex_unlock(&priv->mbox.lock);
+ return;
+ }
+ req->pcifunc = rep->pcifunc;
+ err = otx2_sync_mbox_msg_busy_poll(&priv->mbox);
+ if (err)
+ goto exit;
+
+ rsp = (struct nix_stats_rsp *)
+ otx2_mbox_get_rsp(&priv->mbox.mbox, 0, &req->hdr);
+
+ if (IS_ERR(rsp)) {
+ err = PTR_ERR(rsp);
+ goto exit;
+ }
+
+ stats = &rep->stats;
+ stats->rx_bytes = rsp->rx.octs;
+ stats->rx_frames = rsp->rx.ucast + rsp->rx.bcast +
+ rsp->rx.mcast;
+ stats->rx_drops = rsp->rx.drop;
+ stats->rx_mcast_frames = rsp->rx.mcast;
+ stats->tx_bytes = rsp->tx.octs;
+ stats->tx_frames = rsp->tx.ucast + rsp->tx.bcast + rsp->tx.mcast;
+ stats->tx_drops = rsp->tx.drop;
+exit:
+ mutex_unlock(&priv->mbox.lock);
+}
+
+static void rvu_rep_get_stats64(struct net_device *dev,
+ struct rtnl_link_stats64 *stats)
+{
+ struct rep_dev *rep = netdev_priv(dev);
+
+ stats->rx_packets = rep->stats.rx_frames;
+ stats->rx_bytes = rep->stats.rx_bytes;
+ stats->rx_dropped = rep->stats.rx_drops;
+ stats->multicast = rep->stats.rx_mcast_frames;
+
+ stats->tx_packets = rep->stats.tx_frames;
+ stats->tx_bytes = rep->stats.tx_bytes;
+ stats->tx_dropped = rep->stats.tx_drops;
+
+ schedule_delayed_work(&rep->stats_wrk, msecs_to_jiffies(100));
+}
+
static int rvu_eswitch_config(struct otx2_nic *priv, u8 ena)
{
struct esw_cfg_req *req;
@@ -87,6 +149,7 @@ static const struct net_device_ops rvu_rep_netdev_ops = {
.ndo_open = rvu_rep_open,
.ndo_stop = rvu_rep_stop,
.ndo_start_xmit = rvu_rep_xmit,
+ .ndo_get_stats64 = rvu_rep_get_stats64,
};

static int rvu_rep_napi_init(struct otx2_nic *priv,
@@ -233,6 +296,8 @@ int rvu_rep_create(struct otx2_nic *priv, struct netlink_ext_ack *extack)
free_netdev(ndev);
goto exit;
}
+
+ INIT_DELAYED_WORK(&rep->stats_wrk, rvu_rep_get_stats);
}
err = rvu_rep_napi_init(priv, extack);
if (err)
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/rep.h b/drivers/net/ethernet/marvell/octeontx2/nic/rep.h
index c04874c4d4c6..5d39bf636655 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/rep.h
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/rep.h
@@ -17,9 +17,23 @@
#define PCI_DEVID_RVU_REP 0xA0E0

#define RVU_MAX_REP OTX2_MAX_CQ_CNT
+
+struct rep_stats {
+ u64 rx_bytes;
+ u64 rx_frames;
+ u64 rx_drops;
+ u64 rx_mcast_frames;
+
+ u64 tx_bytes;
+ u64 tx_frames;
+ u64 tx_drops;
+};
+
struct rep_dev {
struct otx2_nic *mdev;
struct net_device *netdev;
+ struct rep_stats stats;
+ struct delayed_work stats_wrk;
u16 rep_id;
u16 pcifunc;
};
--
2.25.1