target/linux/ramips/files/drivers/net/ethernet/ralink/mtk_debugfs.c

   1 /*   This program is free software; you can redistribute it and/or modify
   2  *   it under the terms of the GNU General Public License as published by
   3  *   the Free Software Foundation; version 2 of the License
   4  *
   5  *   This program is distributed in the hope that it will be useful,
   6  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
   7  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   8  *   GNU General Public License for more details.
   9  *
  10  *   Copyright (C) 2014-2016 Sean Wang <sean.wang@mediatek.com>
  11  *   Copyright (C) 2016-2017 John Crispin <blogic@openwrt.org>
  12  */
  13
  14 #include "mtk_offload.h"
  15
  16 static const char *mtk_foe_entry_state_str[] = {
  17         "INVALID",
  18         "UNBIND",
  19         "BIND",
  20         "FIN"
  21 };
  22
  23 static const char *mtk_foe_packet_type_str[] = {
  24         "IPV4_HNAPT",
  25         "IPV4_HNAT",
  26         "IPV6_1T_ROUTE",
  27         "IPV4_DSLITE",
  28         "IPV6_3T_ROUTE",
  29         "IPV6_5T_ROUTE",
  30         "IPV6_6RD",
  31 };
  32
  33 #define IPV4_HNAPT                      0
  34 #define IPV4_HNAT                       1
  35 #define IS_IPV4_HNAPT(x)        (((x)->bfib1.pkt_type == IPV4_HNAPT) ? 1: 0)
  36 struct mtk_eth *_eth;
  37 #define es(entry)               (mtk_foe_entry_state_str[entry->bfib1.state])
  38 //#define ei(entry, end)                (MTK_PPE_TBL_SZ - (int)(end - entry))
  39 #define ei(entry, end)          (MTK_PPE_ENTRY_CNT - (int)(end - entry))
  40 #define pt(entry)               (mtk_foe_packet_type_str[entry->ipv4_hnapt.bfib1.pkt_type])
  41
  42 static int mtk_ppe_debugfs_foe_show(struct seq_file *m, void *private)
  43 {
  44         struct mtk_eth *eth = _eth;
  45         struct mtk_foe_entry *entry, *end;
  46         int i = 0;
  47
  48         entry = eth->foe_table;
  49         end = eth->foe_table + MTK_PPE_ENTRY_CNT;
  50
  51         while (entry < end) {
  52                 if (IS_IPV4_HNAPT(entry)) {
  53                         __be32 saddr = htonl(entry->ipv4_hnapt.sip);
  54                         __be32 daddr = htonl(entry->ipv4_hnapt.dip);
  55                         __be32 nsaddr = htonl(entry->ipv4_hnapt.new_sip);
  56                         __be32 ndaddr = htonl(entry->ipv4_hnapt.new_dip);
  57                         unsigned char h_dest[ETH_ALEN];
  58                         unsigned char h_source[ETH_ALEN];
  59
  60                         *((u32*) h_source) = swab32(entry->ipv4_hnapt.smac_hi);
  61                         *((u16*) &h_source[4]) = swab16(entry->ipv4_hnapt.smac_lo);
  62                         *((u32*) h_dest) = swab32(entry->ipv4_hnapt.dmac_hi);
  63                         *((u16*) &h_dest[4]) = swab16(entry->ipv4_hnapt.dmac_lo);
  64                         seq_printf(m,
  65                                    "(%x)0x%05x|state=%s|type=%s|"
  66                                    "%pI4:%d->%pI4:%d=>%pI4:%d->%pI4:%d|%pM=>%pM|"
  67                                    "etype=0x%04x|info1=0x%x|info2=0x%x|"
  68                                    "vlan1=%d|vlan2=%d\n",
  69                                    i,
  70                                    ei(entry, end), es(entry), pt(entry),
  71                                    &saddr, entry->ipv4_hnapt.sport,
  72                                    &daddr, entry->ipv4_hnapt.dport,
  73                                    &nsaddr, entry->ipv4_hnapt.new_sport,
  74                                    &ndaddr, entry->ipv4_hnapt.new_dport, h_source,
  75                                    h_dest, ntohs(entry->ipv4_hnapt.etype),
  76                                    entry->ipv4_hnapt.info_blk1,
  77                                    entry->ipv4_hnapt.info_blk2,
  78                                    entry->ipv4_hnapt.vlan1,
  79                                    entry->ipv4_hnapt.vlan2);
  80                 } else
  81                         seq_printf(m, "0x%05x state=%s\n",
  82                                    ei(entry, end), es(entry));
  83                 entry++;
  84                 i++;
  85         }
  86
  87         return 0;
  88 }
  89
  90 static int mtk_ppe_debugfs_foe_open(struct inode *inode, struct file *file)
  91 {
  92         return single_open(file, mtk_ppe_debugfs_foe_show, file->private_data);
  93 }
  94
  95 static const struct file_operations mtk_ppe_debugfs_foe_fops = {
  96         .open = mtk_ppe_debugfs_foe_open,
  97         .read = seq_read,
  98         .llseek = seq_lseek,
  99         .release = single_release,
 100 };
 101
 102 int mtk_ppe_debugfs_init(struct mtk_eth *eth)
 103 {
 104         struct dentry *root;
 105
 106         _eth = eth;
 107
 108         root = debugfs_create_dir("mtk_ppe", NULL);
 109         if (!root)
 110                 return -ENOMEM;
 111
 112         debugfs_create_file("all_entry", S_IRUGO, root, eth, &mtk_ppe_debugfs_foe_fops);
 113
 114         return 0;
 115 }