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79c0c4689b
Add read only access to the 32-entry MAC address TCAM via debugfs. BMC filtering shares the same table so this is quite useful to access during debug. See next commit for an example output. Signed-off-by: Alexander Duyck <alexanderduyck@meta.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20250204010038.1404268-1-kuba@kernel.org Signed-off-by: Paolo Abeni <pabeni@redhat.com>
105 lines
2.7 KiB
C
105 lines
2.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/* Copyright (c) Meta Platforms, Inc. and affiliates. */
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#include <linux/debugfs.h>
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#include <linux/pci.h>
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#include <linux/rtnetlink.h>
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#include <linux/seq_file.h>
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#include "fbnic.h"
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static struct dentry *fbnic_dbg_root;
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static void fbnic_dbg_desc_break(struct seq_file *s, int i)
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{
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while (i--)
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seq_putc(s, '-');
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seq_putc(s, '\n');
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}
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static int fbnic_dbg_mac_addr_show(struct seq_file *s, void *v)
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{
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struct fbnic_dev *fbd = s->private;
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char hdr[80];
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int i;
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/* Generate Header */
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snprintf(hdr, sizeof(hdr), "%3s %s %-17s %s\n",
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"Idx", "S", "TCAM Bitmap", "Addr/Mask");
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seq_puts(s, hdr);
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fbnic_dbg_desc_break(s, strnlen(hdr, sizeof(hdr)));
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for (i = 0; i < FBNIC_RPC_TCAM_MACDA_NUM_ENTRIES; i++) {
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struct fbnic_mac_addr *mac_addr = &fbd->mac_addr[i];
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seq_printf(s, "%02d %d %64pb %pm\n",
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i, mac_addr->state, mac_addr->act_tcam,
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mac_addr->value.addr8);
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seq_printf(s, " %pm\n",
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mac_addr->mask.addr8);
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}
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return 0;
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}
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DEFINE_SHOW_ATTRIBUTE(fbnic_dbg_mac_addr);
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static int fbnic_dbg_pcie_stats_show(struct seq_file *s, void *v)
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{
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struct fbnic_dev *fbd = s->private;
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rtnl_lock();
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fbnic_get_hw_stats(fbd);
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seq_printf(s, "ob_rd_tlp: %llu\n", fbd->hw_stats.pcie.ob_rd_tlp.value);
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seq_printf(s, "ob_rd_dword: %llu\n",
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fbd->hw_stats.pcie.ob_rd_dword.value);
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seq_printf(s, "ob_wr_tlp: %llu\n", fbd->hw_stats.pcie.ob_wr_tlp.value);
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seq_printf(s, "ob_wr_dword: %llu\n",
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fbd->hw_stats.pcie.ob_wr_dword.value);
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seq_printf(s, "ob_cpl_tlp: %llu\n",
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fbd->hw_stats.pcie.ob_cpl_tlp.value);
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seq_printf(s, "ob_cpl_dword: %llu\n",
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fbd->hw_stats.pcie.ob_cpl_dword.value);
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seq_printf(s, "ob_rd_no_tag: %llu\n",
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fbd->hw_stats.pcie.ob_rd_no_tag.value);
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seq_printf(s, "ob_rd_no_cpl_cred: %llu\n",
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fbd->hw_stats.pcie.ob_rd_no_cpl_cred.value);
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seq_printf(s, "ob_rd_no_np_cred: %llu\n",
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fbd->hw_stats.pcie.ob_rd_no_np_cred.value);
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rtnl_unlock();
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return 0;
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}
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DEFINE_SHOW_ATTRIBUTE(fbnic_dbg_pcie_stats);
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void fbnic_dbg_fbd_init(struct fbnic_dev *fbd)
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{
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struct pci_dev *pdev = to_pci_dev(fbd->dev);
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const char *name = pci_name(pdev);
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fbd->dbg_fbd = debugfs_create_dir(name, fbnic_dbg_root);
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debugfs_create_file("pcie_stats", 0400, fbd->dbg_fbd, fbd,
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&fbnic_dbg_pcie_stats_fops);
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debugfs_create_file("mac_addr", 0400, fbd->dbg_fbd, fbd,
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&fbnic_dbg_mac_addr_fops);
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}
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void fbnic_dbg_fbd_exit(struct fbnic_dev *fbd)
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{
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debugfs_remove_recursive(fbd->dbg_fbd);
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fbd->dbg_fbd = NULL;
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}
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void fbnic_dbg_init(void)
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{
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fbnic_dbg_root = debugfs_create_dir(fbnic_driver_name, NULL);
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}
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void fbnic_dbg_exit(void)
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{
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debugfs_remove_recursive(fbnic_dbg_root);
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fbnic_dbg_root = NULL;
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}
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