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![Qiheng Lin](/assets/img/avatar_default.png)
GCC reports the following warning with W=1: drivers/net/ethernet/mediatek/mtk_ppe_debugfs.c:80:9: warning: variable 'count' set but not used [-Wunused-but-set-variable] 80 | int i, count; | ^~~~~ This variable is not used in function , this commit remove it to fix the warning. Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Qiheng Lin <linqiheng@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
217 lines
5.1 KiB
C
217 lines
5.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/* Copyright (C) 2020 Felix Fietkau <nbd@nbd.name> */
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#include <linux/kernel.h>
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#include <linux/debugfs.h>
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#include "mtk_eth_soc.h"
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struct mtk_flow_addr_info
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{
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void *src, *dest;
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u16 *src_port, *dest_port;
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bool ipv6;
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};
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static const char *mtk_foe_entry_state_str(int state)
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{
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static const char * const state_str[] = {
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[MTK_FOE_STATE_INVALID] = "INV",
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[MTK_FOE_STATE_UNBIND] = "UNB",
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[MTK_FOE_STATE_BIND] = "BND",
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[MTK_FOE_STATE_FIN] = "FIN",
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};
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if (state >= ARRAY_SIZE(state_str) || !state_str[state])
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return "UNK";
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return state_str[state];
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}
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static const char *mtk_foe_pkt_type_str(int type)
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{
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static const char * const type_str[] = {
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[MTK_PPE_PKT_TYPE_IPV4_HNAPT] = "IPv4 5T",
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[MTK_PPE_PKT_TYPE_IPV4_ROUTE] = "IPv4 3T",
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[MTK_PPE_PKT_TYPE_BRIDGE] = "L2",
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[MTK_PPE_PKT_TYPE_IPV4_DSLITE] = "DS-LITE",
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[MTK_PPE_PKT_TYPE_IPV6_ROUTE_3T] = "IPv6 3T",
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[MTK_PPE_PKT_TYPE_IPV6_ROUTE_5T] = "IPv6 5T",
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[MTK_PPE_PKT_TYPE_IPV6_6RD] = "6RD",
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};
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if (type >= ARRAY_SIZE(type_str) || !type_str[type])
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return "UNKNOWN";
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return type_str[type];
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}
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static void
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mtk_print_addr(struct seq_file *m, u32 *addr, bool ipv6)
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{
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u32 n_addr[4];
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int i;
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if (!ipv6) {
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seq_printf(m, "%pI4h", addr);
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return;
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}
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for (i = 0; i < ARRAY_SIZE(n_addr); i++)
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n_addr[i] = htonl(addr[i]);
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seq_printf(m, "%pI6", n_addr);
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}
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static void
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mtk_print_addr_info(struct seq_file *m, struct mtk_flow_addr_info *ai)
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{
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mtk_print_addr(m, ai->src, ai->ipv6);
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if (ai->src_port)
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seq_printf(m, ":%d", *ai->src_port);
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seq_printf(m, "->");
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mtk_print_addr(m, ai->dest, ai->ipv6);
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if (ai->dest_port)
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seq_printf(m, ":%d", *ai->dest_port);
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}
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static int
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mtk_ppe_debugfs_foe_show(struct seq_file *m, void *private, bool bind)
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{
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struct mtk_ppe *ppe = m->private;
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int i;
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for (i = 0; i < MTK_PPE_ENTRIES; i++) {
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struct mtk_foe_entry *entry = &ppe->foe_table[i];
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struct mtk_foe_mac_info *l2;
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struct mtk_flow_addr_info ai = {};
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unsigned char h_source[ETH_ALEN];
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unsigned char h_dest[ETH_ALEN];
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int type, state;
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u32 ib2;
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state = FIELD_GET(MTK_FOE_IB1_STATE, entry->ib1);
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if (!state)
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continue;
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if (bind && state != MTK_FOE_STATE_BIND)
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continue;
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type = FIELD_GET(MTK_FOE_IB1_PACKET_TYPE, entry->ib1);
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seq_printf(m, "%05x %s %7s", i,
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mtk_foe_entry_state_str(state),
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mtk_foe_pkt_type_str(type));
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switch (type) {
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case MTK_PPE_PKT_TYPE_IPV4_HNAPT:
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case MTK_PPE_PKT_TYPE_IPV4_DSLITE:
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ai.src_port = &entry->ipv4.orig.src_port;
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ai.dest_port = &entry->ipv4.orig.dest_port;
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fallthrough;
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case MTK_PPE_PKT_TYPE_IPV4_ROUTE:
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ai.src = &entry->ipv4.orig.src_ip;
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ai.dest = &entry->ipv4.orig.dest_ip;
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break;
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case MTK_PPE_PKT_TYPE_IPV6_ROUTE_5T:
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ai.src_port = &entry->ipv6.src_port;
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ai.dest_port = &entry->ipv6.dest_port;
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fallthrough;
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case MTK_PPE_PKT_TYPE_IPV6_ROUTE_3T:
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case MTK_PPE_PKT_TYPE_IPV6_6RD:
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ai.src = &entry->ipv6.src_ip;
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ai.dest = &entry->ipv6.dest_ip;
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ai.ipv6 = true;
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break;
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}
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seq_printf(m, " orig=");
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mtk_print_addr_info(m, &ai);
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switch (type) {
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case MTK_PPE_PKT_TYPE_IPV4_HNAPT:
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case MTK_PPE_PKT_TYPE_IPV4_DSLITE:
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ai.src_port = &entry->ipv4.new.src_port;
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ai.dest_port = &entry->ipv4.new.dest_port;
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fallthrough;
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case MTK_PPE_PKT_TYPE_IPV4_ROUTE:
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ai.src = &entry->ipv4.new.src_ip;
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ai.dest = &entry->ipv4.new.dest_ip;
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seq_printf(m, " new=");
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mtk_print_addr_info(m, &ai);
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break;
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}
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if (type >= MTK_PPE_PKT_TYPE_IPV4_DSLITE) {
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l2 = &entry->ipv6.l2;
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ib2 = entry->ipv6.ib2;
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} else {
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l2 = &entry->ipv4.l2;
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ib2 = entry->ipv4.ib2;
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}
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*((__be32 *)h_source) = htonl(l2->src_mac_hi);
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*((__be16 *)&h_source[4]) = htons(l2->src_mac_lo);
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*((__be32 *)h_dest) = htonl(l2->dest_mac_hi);
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*((__be16 *)&h_dest[4]) = htons(l2->dest_mac_lo);
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seq_printf(m, " eth=%pM->%pM etype=%04x"
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" vlan=%d,%d ib1=%08x ib2=%08x\n",
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h_source, h_dest, ntohs(l2->etype),
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l2->vlan1, l2->vlan2, entry->ib1, ib2);
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}
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return 0;
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}
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static int
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mtk_ppe_debugfs_foe_show_all(struct seq_file *m, void *private)
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{
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return mtk_ppe_debugfs_foe_show(m, private, false);
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}
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static int
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mtk_ppe_debugfs_foe_show_bind(struct seq_file *m, void *private)
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{
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return mtk_ppe_debugfs_foe_show(m, private, true);
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}
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static int
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mtk_ppe_debugfs_foe_open_all(struct inode *inode, struct file *file)
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{
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return single_open(file, mtk_ppe_debugfs_foe_show_all,
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inode->i_private);
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}
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static int
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mtk_ppe_debugfs_foe_open_bind(struct inode *inode, struct file *file)
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{
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return single_open(file, mtk_ppe_debugfs_foe_show_bind,
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inode->i_private);
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}
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int mtk_ppe_debugfs_init(struct mtk_ppe *ppe)
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{
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static const struct file_operations fops_all = {
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.open = mtk_ppe_debugfs_foe_open_all,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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};
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static const struct file_operations fops_bind = {
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.open = mtk_ppe_debugfs_foe_open_bind,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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};
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struct dentry *root;
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root = debugfs_create_dir("mtk_ppe", NULL);
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if (!root)
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return -ENOMEM;
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debugfs_create_file("entries", S_IRUGO, root, ppe, &fops_all);
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debugfs_create_file("bind", S_IRUGO, root, ppe, &fops_bind);
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return 0;
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}
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