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