drivers/s390/net/qeth_proc.c

   1 /*
   2  *
   3  * linux/drivers/s390/net/qeth_fs.c
   4  *
   5  * Linux on zSeries OSA Express and HiperSockets support
   6  * This file contains code related to procfs.
   7  *
   8  * Copyright 2000,2003 IBM Corporation
   9  *
  10  * Author(s): Thomas Spatzier <tspat@de.ibm.com>
  11  *
  12  */
  13 #include <linux/module.h>
  14 #include <linux/init.h>
  15 #include <linux/proc_fs.h>
  16 #include <linux/seq_file.h>
  17 #include <linux/list.h>
  18 #include <linux/rwsem.h>
  19
  20 #include "qeth.h"
  21 #include "qeth_mpc.h"
  22 #include "qeth_fs.h"
  23
  24 /***** /proc/qeth *****/
  25 #define QETH_PROCFILE_NAME "qeth"
  26 static struct proc_dir_entry *qeth_procfile;
  27
  28 static int
  29 qeth_procfile_seq_match(struct device *dev, void *data)
  30 {
  31         return(dev ? 1 : 0);
  32 }
  33
  34 static void *
  35 qeth_procfile_seq_start(struct seq_file *s, loff_t *offset)
  36 {
  37         struct device *dev = NULL;
  38         loff_t nr = 0;
  39
  40         if (*offset == 0)
  41                 return SEQ_START_TOKEN;
  42         while (1) {
  43                 dev = driver_find_device(&qeth_ccwgroup_driver.driver, dev,
  44                                          NULL, qeth_procfile_seq_match);
  45                 if (++nr == *offset)
  46                         break;
  47                 put_device(dev);
  48         }
  49         return dev;
  50 }
  51
  52 static void
  53 qeth_procfile_seq_stop(struct seq_file *s, void* it)
  54 {
  55 }
  56
  57 static void *
  58 qeth_procfile_seq_next(struct seq_file *s, void *it, loff_t *offset)
  59 {
  60         struct device *prev, *next;
  61
  62         if (it == SEQ_START_TOKEN)
  63                 prev = NULL;
  64         else
  65                 prev = (struct device *) it;
  66         next = driver_find_device(&qeth_ccwgroup_driver.driver,
  67                                   prev, NULL, qeth_procfile_seq_match);
  68         (*offset)++;
  69         return (void *) next;
  70 }
  71
  72 static inline const char *
  73 qeth_get_router_str(struct qeth_card *card, int ipv)
  74 {
  75         enum qeth_routing_types routing_type = NO_ROUTER;
  76
  77         if (ipv == 4) {
  78                 routing_type = card->options.route4.type;
  79         } else {
  80 #ifdef CONFIG_QETH_IPV6
  81                 routing_type = card->options.route6.type;
  82 #else
  83                 return "n/a";
  84 #endif /* CONFIG_QETH_IPV6 */
  85         }
  86
  87         switch (routing_type){
  88         case PRIMARY_ROUTER:
  89                 return "pri";
  90         case SECONDARY_ROUTER:
  91                 return "sec";
  92         case MULTICAST_ROUTER:
  93                 if (card->info.broadcast_capable == QETH_BROADCAST_WITHOUT_ECHO)
  94                         return "mc+";
  95                 return "mc";
  96         case PRIMARY_CONNECTOR:
  97                 if (card->info.broadcast_capable == QETH_BROADCAST_WITHOUT_ECHO)
  98                         return "p+c";
  99                 return "p.c";
 100         case SECONDARY_CONNECTOR:
 101                 if (card->info.broadcast_capable == QETH_BROADCAST_WITHOUT_ECHO)
 102                         return "s+c";
 103                 return "s.c";
 104         default:   /* NO_ROUTER */
 105                 return "no";
 106         }
 107 }
 108
 109 static int
 110 qeth_procfile_seq_show(struct seq_file *s, void *it)
 111 {
 112         struct device *device;
 113         struct qeth_card *card;
 114         char tmp[12]; /* for qeth_get_prioq_str */
 115
 116         if (it == SEQ_START_TOKEN){
 117                 seq_printf(s, "devices                    CHPID interface  "
 118                               "cardtype       port chksum prio-q'ing rtr4 "
 119                               "rtr6 fsz   cnt\n");
 120                 seq_printf(s, "-------------------------- ----- ---------- "
 121                               "-------------- ---- ------ ---------- ---- "
 122                               "---- ----- -----\n");
 123         } else {
 124                 device = (struct device *) it;
 125                 card = device->driver_data;
 126                 seq_printf(s, "%s/%s/%s x%02X   %-10s %-14s %-4i ",
 127                                 CARD_RDEV_ID(card),
 128                                 CARD_WDEV_ID(card),
 129                                 CARD_DDEV_ID(card),
 130                                 card->info.chpid,
 131                                 QETH_CARD_IFNAME(card),
 132                                 qeth_get_cardname_short(card),
 133                                 card->info.portno);
 134                 if (card->lan_online)
 135                         seq_printf(s, "%-6s %-10s %-4s %-4s %-5s %-5i\n",
 136                                         qeth_get_checksum_str(card),
 137                                         qeth_get_prioq_str(card, tmp),
 138                                         qeth_get_router_str(card, 4),
 139                                         qeth_get_router_str(card, 6),
 140                                         qeth_get_bufsize_str(card),
 141                                         card->qdio.in_buf_pool.buf_count);
 142                 else
 143                         seq_printf(s, "  +++ LAN OFFLINE +++\n");
 144                 put_device(device);
 145         }
 146         return 0;
 147 }
 148
 149 static const struct seq_operations qeth_procfile_seq_ops = {
 150         .start = qeth_procfile_seq_start,
 151         .stop  = qeth_procfile_seq_stop,
 152         .next  = qeth_procfile_seq_next,
 153         .show  = qeth_procfile_seq_show,
 154 };
 155
 156 static int
 157 qeth_procfile_open(struct inode *inode, struct file *file)
 158 {
 159         return seq_open(file, &qeth_procfile_seq_ops);
 160 }
 161
 162 static const struct file_operations qeth_procfile_fops = {
 163         .owner   = THIS_MODULE,
 164         .open    = qeth_procfile_open,
 165         .read    = seq_read,
 166         .llseek  = seq_lseek,
 167         .release = seq_release,
 168 };
 169
 170 /***** /proc/qeth_perf *****/
 171 #define QETH_PERF_PROCFILE_NAME "qeth_perf"
 172 static struct proc_dir_entry *qeth_perf_procfile;
 173
 174 static int
 175 qeth_perf_procfile_seq_show(struct seq_file *s, void *it)
 176 {
 177         struct device *device;
 178         struct qeth_card *card;
 179
 180
 181         if (it == SEQ_START_TOKEN)
 182                 return 0;
 183
 184         device = (struct device *) it;
 185         card = device->driver_data;
 186         seq_printf(s, "For card with devnos %s/%s/%s (%s):\n",
 187                         CARD_RDEV_ID(card),
 188                         CARD_WDEV_ID(card),
 189                         CARD_DDEV_ID(card),
 190                         QETH_CARD_IFNAME(card)
 191                   );
 192         if (!card->options.performance_stats)
 193                 seq_printf(s, "Performance statistics are deactivated.\n");
 194         seq_printf(s, "  Skb's/buffers received                 : %lu/%u\n"
 195                       "  Skb's/buffers sent                     : %lu/%u\n\n",
 196                         card->stats.rx_packets -
 197                                 card->perf_stats.initial_rx_packets,
 198                         card->perf_stats.bufs_rec,
 199                         card->stats.tx_packets -
 200                                 card->perf_stats.initial_tx_packets,
 201                         card->perf_stats.bufs_sent
 202                   );
 203         seq_printf(s, "  Skb's/buffers sent without packing     : %lu/%u\n"
 204                       "  Skb's/buffers sent with packing        : %u/%u\n\n",
 205                    card->stats.tx_packets - card->perf_stats.initial_tx_packets
 206                                           - card->perf_stats.skbs_sent_pack,
 207                    card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack,
 208                    card->perf_stats.skbs_sent_pack,
 209                    card->perf_stats.bufs_sent_pack
 210                   );
 211         seq_printf(s, "  Skbs sent in SG mode                   : %u\n"
 212                       "  Skb fragments sent in SG mode          : %u\n\n",
 213                       card->perf_stats.sg_skbs_sent,
 214                       card->perf_stats.sg_frags_sent);
 215         seq_printf(s, "  Skbs received in SG mode               : %u\n"
 216                       "  Skb fragments received in SG mode      : %u\n"
 217                       "  Page allocations for rx SG mode        : %u\n\n",
 218                       card->perf_stats.sg_skbs_rx,
 219                       card->perf_stats.sg_frags_rx,
 220                       card->perf_stats.sg_alloc_page_rx);
 221         seq_printf(s, "  large_send tx (in Kbytes)              : %u\n"
 222                       "  large_send count                       : %u\n\n",
 223                       card->perf_stats.large_send_bytes >> 10,
 224                       card->perf_stats.large_send_cnt);
 225         seq_printf(s, "  Packing state changes no pkg.->packing : %u/%u\n"
 226                       "  Watermarks L/H                         : %i/%i\n"
 227                       "  Current buffer usage (outbound q's)    : "
 228                       "%i/%i/%i/%i\n\n",
 229                         card->perf_stats.sc_dp_p, card->perf_stats.sc_p_dp,
 230                         QETH_LOW_WATERMARK_PACK, QETH_HIGH_WATERMARK_PACK,
 231                         atomic_read(&card->qdio.out_qs[0]->used_buffers),
 232                         (card->qdio.no_out_queues > 1)?
 233                                 atomic_read(&card->qdio.out_qs[1]->used_buffers)
 234                                 : 0,
 235                         (card->qdio.no_out_queues > 2)?
 236                                 atomic_read(&card->qdio.out_qs[2]->used_buffers)
 237                                 : 0,
 238                         (card->qdio.no_out_queues > 3)?
 239                                 atomic_read(&card->qdio.out_qs[3]->used_buffers)
 240                                 : 0
 241                   );
 242         seq_printf(s, "  Inbound handler time (in us)           : %u\n"
 243                       "  Inbound handler count                  : %u\n"
 244                       "  Inbound do_QDIO time (in us)           : %u\n"
 245                       "  Inbound do_QDIO count                  : %u\n\n"
 246                       "  Outbound handler time (in us)          : %u\n"
 247                       "  Outbound handler count                 : %u\n\n"
 248                       "  Outbound time (in us, incl QDIO)       : %u\n"
 249                       "  Outbound count                         : %u\n"
 250                       "  Outbound do_QDIO time (in us)          : %u\n"
 251                       "  Outbound do_QDIO count                 : %u\n\n",
 252                         card->perf_stats.inbound_time,
 253                         card->perf_stats.inbound_cnt,
 254                         card->perf_stats.inbound_do_qdio_time,
 255                         card->perf_stats.inbound_do_qdio_cnt,
 256                         card->perf_stats.outbound_handler_time,
 257                         card->perf_stats.outbound_handler_cnt,
 258                         card->perf_stats.outbound_time,
 259                         card->perf_stats.outbound_cnt,
 260                         card->perf_stats.outbound_do_qdio_time,
 261                         card->perf_stats.outbound_do_qdio_cnt
 262                   );
 263         put_device(device);
 264         return 0;
 265 }
 266
 267 static const struct seq_operations qeth_perf_procfile_seq_ops = {
 268         .start = qeth_procfile_seq_start,
 269         .stop  = qeth_procfile_seq_stop,
 270         .next  = qeth_procfile_seq_next,
 271         .show  = qeth_perf_procfile_seq_show,
 272 };
 273
 274 static int
 275 qeth_perf_procfile_open(struct inode *inode, struct file *file)
 276 {
 277         return seq_open(file, &qeth_perf_procfile_seq_ops);
 278 }
 279
 280 static const struct file_operations qeth_perf_procfile_fops = {
 281         .owner   = THIS_MODULE,
 282         .open    = qeth_perf_procfile_open,
 283         .read    = seq_read,
 284         .llseek  = seq_lseek,
 285         .release = seq_release,
 286 };
 287
 288 int __init
 289 qeth_create_procfs_entries(void)
 290 {
 291         qeth_procfile = create_proc_entry(QETH_PROCFILE_NAME,
 292                                            S_IFREG | 0444, NULL);
 293         if (qeth_procfile)
 294                 qeth_procfile->proc_fops = &qeth_procfile_fops;
 295
 296         qeth_perf_procfile = create_proc_entry(QETH_PERF_PROCFILE_NAME,
 297                                            S_IFREG | 0444, NULL);
 298         if (qeth_perf_procfile)
 299                 qeth_perf_procfile->proc_fops = &qeth_perf_procfile_fops;
 300
 301         if (qeth_procfile &&
 302             qeth_perf_procfile)
 303                 return 0;
 304         else
 305                 return -ENOMEM;
 306 }
 307
 308 void __exit
 309 qeth_remove_procfs_entries(void)
 310 {
 311         if (qeth_procfile)
 312                 remove_proc_entry(QETH_PROCFILE_NAME, NULL);
 313         if (qeth_perf_procfile)
 314                 remove_proc_entry(QETH_PERF_PROCFILE_NAME, NULL);
 315 }
 316