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df6cb09580
ENETC's MAC filter consists of hash MAC filter and exact MAC filter. Hash MAC filter is a 64-bit entry hash table consisting of two 32-bit registers. Exact MAC filter is implemented by configuring MAC address filter table through command BD ring. The table is stored in ENETC's internal memory and needs to be read through command BD ring. In order to facilitate debugging, added a debugfs interface to get the relevant information about MAC filter. Signed-off-by: Wei Fang <wei.fang@nxp.com> Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com> Link: https://patch.msgid.link/20250506080735.3444381-6-wei.fang@nxp.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
90 lines
2.3 KiB
C
90 lines
2.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/* Copyright 2025 NXP */
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#include <linux/device.h>
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#include <linux/debugfs.h>
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#include <linux/seq_file.h>
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#include <linux/string_choices.h>
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#include "enetc_pf.h"
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#include "enetc4_debugfs.h"
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static void enetc_show_si_mac_hash_filter(struct seq_file *s, int i)
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{
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struct enetc_si *si = s->private;
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struct enetc_hw *hw = &si->hw;
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u32 hash_h, hash_l;
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hash_l = enetc_port_rd(hw, ENETC4_PSIUMHFR0(i));
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hash_h = enetc_port_rd(hw, ENETC4_PSIUMHFR1(i));
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seq_printf(s, "SI %d unicast MAC hash filter: 0x%08x%08x\n",
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i, hash_h, hash_l);
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hash_l = enetc_port_rd(hw, ENETC4_PSIMMHFR0(i));
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hash_h = enetc_port_rd(hw, ENETC4_PSIMMHFR1(i));
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seq_printf(s, "SI %d multicast MAC hash filter: 0x%08x%08x\n",
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i, hash_h, hash_l);
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}
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static int enetc_mac_filter_show(struct seq_file *s, void *data)
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{
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struct enetc_si *si = s->private;
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struct enetc_hw *hw = &si->hw;
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struct maft_entry_data maft;
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struct enetc_pf *pf;
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int i, err, num_si;
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u32 val;
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pf = enetc_si_priv(si);
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num_si = pf->caps.num_vsi + 1;
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val = enetc_port_rd(hw, ENETC4_PSIPMMR);
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for (i = 0; i < num_si; i++) {
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seq_printf(s, "SI %d Unicast Promiscuous mode: %s\n", i,
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str_enabled_disabled(PSIPMMR_SI_MAC_UP(i) & val));
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seq_printf(s, "SI %d Multicast Promiscuous mode: %s\n", i,
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str_enabled_disabled(PSIPMMR_SI_MAC_MP(i) & val));
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}
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/* MAC hash filter table */
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for (i = 0; i < num_si; i++)
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enetc_show_si_mac_hash_filter(s, i);
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if (!pf->num_mfe)
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return 0;
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/* MAC address filter table */
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seq_puts(s, "MAC address filter table\n");
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for (i = 0; i < pf->num_mfe; i++) {
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memset(&maft, 0, sizeof(maft));
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err = ntmp_maft_query_entry(&si->ntmp_user, i, &maft);
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if (err)
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return err;
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seq_printf(s, "Entry %d, MAC: %pM, SI bitmap: 0x%04x\n", i,
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maft.keye.mac_addr, le16_to_cpu(maft.cfge.si_bitmap));
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}
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return 0;
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}
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DEFINE_SHOW_ATTRIBUTE(enetc_mac_filter);
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void enetc_create_debugfs(struct enetc_si *si)
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{
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struct net_device *ndev = si->ndev;
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struct dentry *root;
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root = debugfs_create_dir(netdev_name(ndev), NULL);
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if (IS_ERR(root))
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return;
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si->debugfs_root = root;
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debugfs_create_file("mac_filter", 0444, root, si, &enetc_mac_filter_fops);
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}
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void enetc_remove_debugfs(struct enetc_si *si)
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{
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debugfs_remove(si->debugfs_root);
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si->debugfs_root = NULL;
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}
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