bnxt_en: add debugfs support for DIM (cabfb09d) · Commits · 戴 / test

drivers/net/ethernet/broadcom/bnxt/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -2,3 +2,4 @@ obj-$(CONFIG_BNXT) += bnxt_en.o

		bnxt_en-y := bnxt.o bnxt_sriov.o bnxt_ethtool.o bnxt_dcb.o bnxt_ulp.o bnxt_xdp.o bnxt_vfr.o bnxt_devlink.o bnxt_dim.o
		bnxt_en-$(CONFIG_BNXT_FLOWER_OFFLOAD) += bnxt_tc.o
		bnxt_en-$(CONFIG_DEBUG_FS) += bnxt_debugfs.o

drivers/net/ethernet/broadcom/bnxt/bnxt.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -62,6 +62,7 @@
		#include "bnxt_vfr.h"
		#include "bnxt_tc.h"
		#include "bnxt_devlink.h"
		#include "bnxt_debugfs.h"

		#define BNXT_TX_TIMEOUT (5 * HZ)

		@@ -6870,6 +6871,7 @@ static int __bnxt_open_nic(struct bnxt *bp, bool irq_re_init, bool link_re_init)
		}

		bnxt_enable_napi(bp);
		bnxt_debug_dev_init(bp);

		rc = bnxt_init_nic(bp, irq_re_init);
		if (rc) {
		@@ -6902,6 +6904,7 @@ static int __bnxt_open_nic(struct bnxt *bp, bool irq_re_init, bool link_re_init)
		return 0;

		open_err:
		bnxt_debug_dev_exit(bp);
		bnxt_disable_napi(bp);
		bnxt_del_napi(bp);

		@@ -6995,6 +6998,7 @@ static void __bnxt_close_nic(struct bnxt *bp, bool irq_re_init,

		/* TODO CHIMP_FW: Link/PHY related cleanup if (link_re_init) */

		bnxt_debug_dev_exit(bp);
		bnxt_disable_napi(bp);
		del_timer_sync(&bp->timer);
		bnxt_free_skbs(bp);
		@@ -9071,6 +9075,7 @@ static struct pci_driver bnxt_pci_driver = {

		static int __init bnxt_init(void)
		{
		bnxt_debug_init();
		return pci_register_driver(&bnxt_pci_driver);
		}

		@@ -9079,6 +9084,7 @@ static void __exit bnxt_exit(void)
		pci_unregister_driver(&bnxt_pci_driver);
		if (bnxt_pf_wq)
		destroy_workqueue(bnxt_pf_wq);
		bnxt_debug_exit();
		}

		module_init(bnxt_init);

drivers/net/ethernet/broadcom/bnxt/bnxt.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -1391,6 +1391,8 @@ struct bnxt {
		u16 cfa_code_map; / cfa_code -> vf_idx map */
		u8 switch_id[8];
		struct bnxt_tc_info *tc_info;
		struct dentry *debugfs_pdev;
		struct dentry *debugfs_dim;
		};

		#define BNXT_RX_STATS_OFFSET(counter) \

drivers/net/ethernet/broadcom/bnxt/bnxt_debugfs.c

0 → 100644

+124 −0

Original line number	Diff line number	Diff line
		/* Broadcom NetXtreme-C/E network driver.
		*
		* Copyright (c) 2017-2018 Broadcom Limited
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License as published by
		* the Free Software Foundation.
		*/

		#include <linux/debugfs.h>
		#include <linux/module.h>
		#include <linux/pci.h>
		#include "bnxt_hsi.h"
		#include <linux/net_dim.h>
		#include "bnxt.h"
		#include "bnxt_debugfs.h"

		static struct dentry *bnxt_debug_mnt;

		static ssize_t debugfs_dim_read(struct file *filep,
		char __user *buffer,
		size_t count, loff_t *ppos)
		{
		struct net_dim *dim = filep->private_data;
		int len;
		char *buf;

		if (*ppos)
		return 0;
		if (!dim)
		return -ENODEV;
		buf = kasprintf(GFP_KERNEL,
		"state = %d\n" \
		"profile_ix = %d\n" \
		"mode = %d\n" \
		"tune_state = %d\n" \
		"steps_right = %d\n" \
		"steps_left = %d\n" \
		"tired = %d\n",
		dim->state,
		dim->profile_ix,
		dim->mode,
		dim->tune_state,
		dim->steps_right,
		dim->steps_left,
		dim->tired);
		if (!buf)
		return -ENOMEM;
		if (count < strlen(buf)) {
		kfree(buf);
		return -ENOSPC;
		}
		len = simple_read_from_buffer(buffer, count, ppos, buf, strlen(buf));
		kfree(buf);
		return len;
		}

		static const struct file_operations debugfs_dim_fops = {
		.owner = THIS_MODULE,
		.open = simple_open,
		.read = debugfs_dim_read,
		};

		static struct dentry debugfs_dim_ring_init(struct net_dim dim, int ring_idx,
		struct dentry *dd)
		{
		static char qname[16];

		snprintf(qname, 10, "%d", ring_idx);
		return debugfs_create_file(qname, 0600, dd,
		dim, &debugfs_dim_fops);
		}

		void bnxt_debug_dev_init(struct bnxt *bp)
		{
		const char *pname = pci_name(bp->pdev);
		struct dentry *pdevf;
		int i;

		bp->debugfs_pdev = debugfs_create_dir(pname, bnxt_debug_mnt);
		if (bp->debugfs_pdev) {
		pdevf = debugfs_create_dir("dim", bp->debugfs_pdev);
		if (!pdevf) {
		pr_err("failed to create debugfs entry %s/dim\n",
		pname);
		return;
		}
		bp->debugfs_dim = pdevf;
		/* create files for each rx ring */
		for (i = 0; i < bp->cp_nr_rings; i++) {
		struct bnxt_cp_ring_info *cpr = &bp->bnapi[i]->cp_ring;

		if (cpr && bp->bnapi[i]->rx_ring) {
		pdevf = debugfs_dim_ring_init(&cpr->dim, i,
		bp->debugfs_dim);
		if (!pdevf)
		pr_err("failed to create debugfs entry %s/dim/%d\n",
		pname, i);
		}
		}
		} else {
		pr_err("failed to create debugfs entry %s\n", pname);
		}
		}

		void bnxt_debug_dev_exit(struct bnxt *bp)
		{
		if (bp) {
		debugfs_remove_recursive(bp->debugfs_pdev);
		bp->debugfs_pdev = NULL;
		}
		}

		void bnxt_debug_init(void)
		{
		bnxt_debug_mnt = debugfs_create_dir("bnxt_en", NULL);
		if (!bnxt_debug_mnt)
		pr_err("failed to init bnxt_en debugfs\n");
		}

		void bnxt_debug_exit(void)
		{
		debugfs_remove_recursive(bnxt_debug_mnt);
		}

drivers/net/ethernet/broadcom/bnxt/bnxt_debugfs.h

0 → 100644

+23 −0

Original line number	Diff line number	Diff line
		/* Broadcom NetXtreme-C/E network driver.
		*
		* Copyright (c) 2017-2018 Broadcom Limited
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License as published by
		* the Free Software Foundation.
		*/

		#include "bnxt_hsi.h"
		#include "bnxt.h"

		#ifdef CONFIG_DEBUG_FS
		void bnxt_debug_init(void);
		void bnxt_debug_exit(void);
		void bnxt_debug_dev_init(struct bnxt *bp);
		void bnxt_debug_dev_exit(struct bnxt *bp);
		#else
		static inline void bnxt_debug_init(void) {}
		static inline void bnxt_debug_exit(void) {}
		static inline void bnxt_debug_dev_init(struct bnxt *bp) {}
		static inline void bnxt_debug_dev_exit(struct bnxt *bp) {}
		#endif

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