From 9370bb92b2d16684ee45cf24e879c93c509162da Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Thu, 19 Dec 2024 01:47:39 +0000
Subject: [PATCH] add wifi6 8852be driver
---
kernel/drivers/net/ethernet/cavium/thunder/nicvf_main.c | 164 ++++++++++++++++++++++++++++++++----------------------
1 files changed, 98 insertions(+), 66 deletions(-)
diff --git a/kernel/drivers/net/ethernet/cavium/thunder/nicvf_main.c b/kernel/drivers/net/ethernet/cavium/thunder/nicvf_main.c
index 0fbb0de..488da76 100644
--- a/kernel/drivers/net/ethernet/cavium/thunder/nicvf_main.c
+++ b/kernel/drivers/net/ethernet/cavium/thunder/nicvf_main.c
@@ -1,9 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2015 Cavium, Inc.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License
- * as published by the Free Software Foundation.
*/
#include <linux/module.h>
@@ -75,9 +72,6 @@
MODULE_PARM_DESC(cpi_alg,
"PFC algorithm (0=none, 1=VLAN, 2=VLAN16, 3=IP Diffserv)");
-/* workqueue for handling kernel ndo_set_rx_mode() calls */
-static struct workqueue_struct *nicvf_rx_mode_wq;
-
static inline u8 nicvf_netdev_qidx(struct nicvf *nic, u8 qidx)
{
if (nic->sqs_mode)
@@ -132,34 +126,39 @@
int nicvf_send_msg_to_pf(struct nicvf *nic, union nic_mbx *mbx)
{
- int timeout = NIC_MBOX_MSG_TIMEOUT;
- int sleep = 10;
+ unsigned long timeout;
+ int ret = 0;
+
+ mutex_lock(&nic->rx_mode_mtx);
nic->pf_acked = false;
nic->pf_nacked = false;
nicvf_write_to_mbx(nic, mbx);
+ timeout = jiffies + msecs_to_jiffies(NIC_MBOX_MSG_TIMEOUT);
/* Wait for previous message to be acked, timeout 2sec */
while (!nic->pf_acked) {
if (nic->pf_nacked) {
netdev_err(nic->netdev,
"PF NACK to mbox msg 0x%02x from VF%d\n",
(mbx->msg.msg & 0xFF), nic->vf_id);
- return -EINVAL;
+ ret = -EINVAL;
+ break;
}
- msleep(sleep);
+ usleep_range(8000, 10000);
if (nic->pf_acked)
break;
- timeout -= sleep;
- if (!timeout) {
+ if (time_after(jiffies, timeout)) {
netdev_err(nic->netdev,
"PF didn't ACK to mbox msg 0x%02x from VF%d\n",
(mbx->msg.msg & 0xFF), nic->vf_id);
- return -EBUSY;
+ ret = -EBUSY;
+ break;
}
}
- return 0;
+ mutex_unlock(&nic->rx_mode_mtx);
+ return ret;
}
/* Checks if VF is able to comminicate with PF
@@ -246,21 +245,24 @@
break;
case NIC_MBOX_MSG_BGX_LINK_CHANGE:
nic->pf_acked = true;
- nic->link_up = mbx.link_status.link_up;
- nic->duplex = mbx.link_status.duplex;
- nic->speed = mbx.link_status.speed;
- nic->mac_type = mbx.link_status.mac_type;
- if (nic->link_up) {
- netdev_info(nic->netdev, "Link is Up %d Mbps %s duplex\n",
- nic->speed,
- nic->duplex == DUPLEX_FULL ?
- "Full" : "Half");
- netif_carrier_on(nic->netdev);
- netif_tx_start_all_queues(nic->netdev);
- } else {
- netdev_info(nic->netdev, "Link is Down\n");
- netif_carrier_off(nic->netdev);
- netif_tx_stop_all_queues(nic->netdev);
+ if (nic->link_up != mbx.link_status.link_up) {
+ nic->link_up = mbx.link_status.link_up;
+ nic->duplex = mbx.link_status.duplex;
+ nic->speed = mbx.link_status.speed;
+ nic->mac_type = mbx.link_status.mac_type;
+ if (nic->link_up) {
+ netdev_info(nic->netdev,
+ "Link is Up %d Mbps %s duplex\n",
+ nic->speed,
+ nic->duplex == DUPLEX_FULL ?
+ "Full" : "Half");
+ netif_carrier_on(nic->netdev);
+ netif_tx_start_all_queues(nic->netdev);
+ } else {
+ netdev_info(nic->netdev, "Link is Down\n");
+ netif_carrier_off(nic->netdev);
+ netif_tx_stop_all_queues(nic->netdev);
+ }
}
break;
case NIC_MBOX_MSG_ALLOC_SQS:
@@ -550,6 +552,7 @@
xdp_set_data_meta_invalid(&xdp);
xdp.data_end = xdp.data + len;
xdp.rxq = &rq->xdp_rxq;
+ xdp.frame_sz = RCV_FRAG_LEN + XDP_PACKET_HEADROOM;
orig_data = xdp.data;
rcu_read_lock();
@@ -591,10 +594,10 @@
return true;
default:
bpf_warn_invalid_xdp_action(action);
- /* fall through */
+ fallthrough;
case XDP_ABORTED:
trace_xdp_exception(nic->netdev, prog, action);
- /* fall through */
+ fallthrough;
case XDP_DROP:
/* Check if it's a recycled page, if not
* unmap the DMA mapping.
@@ -982,9 +985,9 @@
*
* As of now only CQ errors are handled
*/
-static void nicvf_handle_qs_err(unsigned long data)
+static void nicvf_handle_qs_err(struct tasklet_struct *t)
{
- struct nicvf *nic = (struct nicvf *)data;
+ struct nicvf *nic = from_tasklet(nic, t, qs_err_task);
struct queue_set *qs = nic->qs;
int qidx;
u64 status;
@@ -1329,6 +1332,12 @@
struct nicvf_cq_poll *cq_poll = NULL;
union nic_mbx mbx = {};
+ /* wait till all queued set_rx_mode tasks completes */
+ if (nic->nicvf_rx_mode_wq) {
+ cancel_delayed_work_sync(&nic->link_change_work);
+ drain_workqueue(nic->nicvf_rx_mode_wq);
+ }
+
mbx.msg.msg = NIC_MBOX_MSG_SHUTDOWN;
nicvf_send_msg_to_pf(nic, &mbx);
@@ -1428,12 +1437,28 @@
return nicvf_send_msg_to_pf(nic, &mbx);
}
+static void nicvf_link_status_check_task(struct work_struct *work_arg)
+{
+ struct nicvf *nic = container_of(work_arg,
+ struct nicvf,
+ link_change_work.work);
+ union nic_mbx mbx = {};
+ mbx.msg.msg = NIC_MBOX_MSG_BGX_LINK_CHANGE;
+ nicvf_send_msg_to_pf(nic, &mbx);
+ queue_delayed_work(nic->nicvf_rx_mode_wq,
+ &nic->link_change_work, 2 * HZ);
+}
+
int nicvf_open(struct net_device *netdev)
{
int cpu, err, qidx;
struct nicvf *nic = netdev_priv(netdev);
struct queue_set *qs = nic->qs;
struct nicvf_cq_poll *cq_poll = NULL;
+
+ /* wait till all queued set_rx_mode tasks completes if any */
+ if (nic->nicvf_rx_mode_wq)
+ drain_workqueue(nic->nicvf_rx_mode_wq);
netif_carrier_off(netdev);
@@ -1468,12 +1493,10 @@
}
/* Init tasklet for handling Qset err interrupt */
- tasklet_init(&nic->qs_err_task, nicvf_handle_qs_err,
- (unsigned long)nic);
+ tasklet_setup(&nic->qs_err_task, nicvf_handle_qs_err);
/* Init RBDR tasklet which will refill RBDR */
- tasklet_init(&nic->rbdr_task, nicvf_rbdr_task,
- (unsigned long)nic);
+ tasklet_setup(&nic->rbdr_task, nicvf_rbdr_task);
INIT_DELAYED_WORK(&nic->rbdr_work, nicvf_rbdr_work);
/* Configure CPI alorithm */
@@ -1530,6 +1553,13 @@
/* Send VF config done msg to PF */
nicvf_send_cfg_done(nic);
+
+ if (nic->nicvf_rx_mode_wq) {
+ INIT_DELAYED_WORK(&nic->link_change_work,
+ nicvf_link_status_check_task);
+ queue_delayed_work(nic->nicvf_rx_mode_wq,
+ &nic->link_change_work, 0);
+ }
return 0;
cleanup:
@@ -1709,7 +1739,7 @@
}
-static void nicvf_tx_timeout(struct net_device *dev)
+static void nicvf_tx_timeout(struct net_device *dev, unsigned int txqueue)
{
struct nicvf *nic = netdev_priv(dev);
@@ -1844,13 +1874,8 @@
if (nic->xdp_prog) {
/* Attach BPF program */
- nic->xdp_prog = bpf_prog_add(nic->xdp_prog, nic->rx_queues - 1);
- if (!IS_ERR(nic->xdp_prog)) {
- bpf_attached = true;
- } else {
- ret = PTR_ERR(nic->xdp_prog);
- nic->xdp_prog = NULL;
- }
+ bpf_prog_add(nic->xdp_prog, nic->rx_queues - 1);
+ bpf_attached = true;
}
/* Calculate Tx queues needed for XDP and network stack */
@@ -1879,9 +1904,6 @@
switch (xdp->command) {
case XDP_SETUP_PROG:
return nicvf_xdp_setup(nic, xdp->prog);
- case XDP_QUERY_PROG:
- xdp->prog_id = nic->xdp_prog ? nic->xdp_prog->aux->id : 0;
- return 0;
default:
return -EINVAL;
}
@@ -1976,7 +1998,7 @@
* its' own LMAC to the filter to accept packets for it.
*/
mbx.xcast.msg = NIC_MBOX_MSG_ADD_MCAST;
- mbx.xcast.data.mac = 0;
+ mbx.xcast.mac = 0;
if (nicvf_send_msg_to_pf(nic, &mbx) < 0)
goto free_mc;
}
@@ -1986,7 +2008,7 @@
/* now go through kernel list of MACs and add them one by one */
for (idx = 0; idx < mc_addrs->count; idx++) {
mbx.xcast.msg = NIC_MBOX_MSG_ADD_MCAST;
- mbx.xcast.data.mac = mc_addrs->mc[idx];
+ mbx.xcast.mac = mc_addrs->mc[idx];
if (nicvf_send_msg_to_pf(nic, &mbx) < 0)
goto free_mc;
}
@@ -1994,7 +2016,7 @@
/* and finally set rx mode for PF accordingly */
mbx.xcast.msg = NIC_MBOX_MSG_SET_XCAST;
- mbx.xcast.data.mode = mode;
+ mbx.xcast.mode = mode;
nicvf_send_msg_to_pf(nic, &mbx);
free_mc:
@@ -2004,7 +2026,7 @@
static void nicvf_set_rx_mode_task(struct work_struct *work_arg)
{
struct nicvf_work *vf_work = container_of(work_arg, struct nicvf_work,
- work.work);
+ work);
struct nicvf *nic = container_of(vf_work, struct nicvf, rx_mode_work);
u8 mode;
struct xcast_addr_list *mc;
@@ -2043,8 +2065,8 @@
mode |= BGX_XCAST_MCAST_FILTER;
/* here we need to copy mc addrs */
if (netdev_mc_count(netdev)) {
- mc_list = kmalloc(offsetof(typeof(*mc_list),
- mc[netdev_mc_count(netdev)]),
+ mc_list = kmalloc(struct_size(mc_list, mc,
+ netdev_mc_count(netdev)),
GFP_ATOMIC);
if (unlikely(!mc_list))
return;
@@ -2061,7 +2083,7 @@
kfree(nic->rx_mode_work.mc);
nic->rx_mode_work.mc = mc_list;
nic->rx_mode_work.mode = mode;
- queue_delayed_work(nicvf_rx_mode_wq, &nic->rx_mode_work.work, 0);
+ queue_work(nic->nicvf_rx_mode_wq, &nic->rx_mode_work.work);
spin_unlock(&nic->rx_mode_wq_lock);
}
@@ -2153,6 +2175,9 @@
nic->max_queues *= 2;
nic->ptp_clock = ptp_clock;
+ /* Initialize mutex that serializes usage of VF's mailbox */
+ mutex_init(&nic->rx_mode_mtx);
+
/* MAP VF's configuration registers */
nic->reg_base = pcim_iomap(pdev, PCI_CFG_REG_BAR_NUM, 0);
if (!nic->reg_base) {
@@ -2218,13 +2243,22 @@
INIT_WORK(&nic->reset_task, nicvf_reset_task);
- INIT_DELAYED_WORK(&nic->rx_mode_work.work, nicvf_set_rx_mode_task);
+ nic->nicvf_rx_mode_wq = alloc_ordered_workqueue("nicvf_rx_mode_wq_VF%d",
+ WQ_MEM_RECLAIM,
+ nic->vf_id);
+ if (!nic->nicvf_rx_mode_wq) {
+ err = -ENOMEM;
+ dev_err(dev, "Failed to allocate work queue\n");
+ goto err_unregister_interrupts;
+ }
+
+ INIT_WORK(&nic->rx_mode_work.work, nicvf_set_rx_mode_task);
spin_lock_init(&nic->rx_mode_wq_lock);
err = register_netdev(netdev);
if (err) {
dev_err(dev, "Failed to register netdevice\n");
- goto err_unregister_interrupts;
+ goto err_destroy_workqueue;
}
nic->msg_enable = debug;
@@ -2233,6 +2267,8 @@
return 0;
+err_destroy_workqueue:
+ destroy_workqueue(nic->nicvf_rx_mode_wq);
err_unregister_interrupts:
nicvf_unregister_interrupts(nic);
err_free_netdev:
@@ -2259,13 +2295,15 @@
nic = netdev_priv(netdev);
pnetdev = nic->pnicvf->netdev;
- cancel_delayed_work_sync(&nic->rx_mode_work.work);
-
/* Check if this Qset is assigned to different VF.
* If yes, clean primary and all secondary Qsets.
*/
if (pnetdev && (pnetdev->reg_state == NETREG_REGISTERED))
unregister_netdev(pnetdev);
+ if (nic->nicvf_rx_mode_wq) {
+ destroy_workqueue(nic->nicvf_rx_mode_wq);
+ nic->nicvf_rx_mode_wq = NULL;
+ }
nicvf_unregister_interrupts(nic);
pci_set_drvdata(pdev, NULL);
if (nic->drv_stats)
@@ -2292,17 +2330,11 @@
static int __init nicvf_init_module(void)
{
pr_info("%s, ver %s\n", DRV_NAME, DRV_VERSION);
- nicvf_rx_mode_wq = alloc_ordered_workqueue("nicvf_generic",
- WQ_MEM_RECLAIM);
return pci_register_driver(&nicvf_driver);
}
static void __exit nicvf_cleanup_module(void)
{
- if (nicvf_rx_mode_wq) {
- destroy_workqueue(nicvf_rx_mode_wq);
- nicvf_rx_mode_wq = NULL;
- }
pci_unregister_driver(&nicvf_driver);
}
--
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