aa617aa956
For large incoming packets > PAGE_SIZE/2 qeth creates a fragmented skb by adding pointers to qdio pages to the fragment list of the skb. This avoids allocating big chunks of consecutive memory. Also copying data from the qdio buffer to the skb is economized. Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: Ursula Braun <braunu@de.ibm.com> Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
316 lines
8.8 KiB
C
316 lines
8.8 KiB
C
/*
|
|
*
|
|
* linux/drivers/s390/net/qeth_fs.c
|
|
*
|
|
* Linux on zSeries OSA Express and HiperSockets support
|
|
* This file contains code related to procfs.
|
|
*
|
|
* Copyright 2000,2003 IBM Corporation
|
|
*
|
|
* Author(s): Thomas Spatzier <tspat@de.ibm.com>
|
|
*
|
|
*/
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/proc_fs.h>
|
|
#include <linux/seq_file.h>
|
|
#include <linux/list.h>
|
|
#include <linux/rwsem.h>
|
|
|
|
#include "qeth.h"
|
|
#include "qeth_mpc.h"
|
|
#include "qeth_fs.h"
|
|
|
|
/***** /proc/qeth *****/
|
|
#define QETH_PROCFILE_NAME "qeth"
|
|
static struct proc_dir_entry *qeth_procfile;
|
|
|
|
static int
|
|
qeth_procfile_seq_match(struct device *dev, void *data)
|
|
{
|
|
return(dev ? 1 : 0);
|
|
}
|
|
|
|
static void *
|
|
qeth_procfile_seq_start(struct seq_file *s, loff_t *offset)
|
|
{
|
|
struct device *dev = NULL;
|
|
loff_t nr = 0;
|
|
|
|
if (*offset == 0)
|
|
return SEQ_START_TOKEN;
|
|
while (1) {
|
|
dev = driver_find_device(&qeth_ccwgroup_driver.driver, dev,
|
|
NULL, qeth_procfile_seq_match);
|
|
if (++nr == *offset)
|
|
break;
|
|
put_device(dev);
|
|
}
|
|
return dev;
|
|
}
|
|
|
|
static void
|
|
qeth_procfile_seq_stop(struct seq_file *s, void* it)
|
|
{
|
|
}
|
|
|
|
static void *
|
|
qeth_procfile_seq_next(struct seq_file *s, void *it, loff_t *offset)
|
|
{
|
|
struct device *prev, *next;
|
|
|
|
if (it == SEQ_START_TOKEN)
|
|
prev = NULL;
|
|
else
|
|
prev = (struct device *) it;
|
|
next = driver_find_device(&qeth_ccwgroup_driver.driver,
|
|
prev, NULL, qeth_procfile_seq_match);
|
|
(*offset)++;
|
|
return (void *) next;
|
|
}
|
|
|
|
static inline const char *
|
|
qeth_get_router_str(struct qeth_card *card, int ipv)
|
|
{
|
|
enum qeth_routing_types routing_type = NO_ROUTER;
|
|
|
|
if (ipv == 4) {
|
|
routing_type = card->options.route4.type;
|
|
} else {
|
|
#ifdef CONFIG_QETH_IPV6
|
|
routing_type = card->options.route6.type;
|
|
#else
|
|
return "n/a";
|
|
#endif /* CONFIG_QETH_IPV6 */
|
|
}
|
|
|
|
switch (routing_type){
|
|
case PRIMARY_ROUTER:
|
|
return "pri";
|
|
case SECONDARY_ROUTER:
|
|
return "sec";
|
|
case MULTICAST_ROUTER:
|
|
if (card->info.broadcast_capable == QETH_BROADCAST_WITHOUT_ECHO)
|
|
return "mc+";
|
|
return "mc";
|
|
case PRIMARY_CONNECTOR:
|
|
if (card->info.broadcast_capable == QETH_BROADCAST_WITHOUT_ECHO)
|
|
return "p+c";
|
|
return "p.c";
|
|
case SECONDARY_CONNECTOR:
|
|
if (card->info.broadcast_capable == QETH_BROADCAST_WITHOUT_ECHO)
|
|
return "s+c";
|
|
return "s.c";
|
|
default: /* NO_ROUTER */
|
|
return "no";
|
|
}
|
|
}
|
|
|
|
static int
|
|
qeth_procfile_seq_show(struct seq_file *s, void *it)
|
|
{
|
|
struct device *device;
|
|
struct qeth_card *card;
|
|
char tmp[12]; /* for qeth_get_prioq_str */
|
|
|
|
if (it == SEQ_START_TOKEN){
|
|
seq_printf(s, "devices CHPID interface "
|
|
"cardtype port chksum prio-q'ing rtr4 "
|
|
"rtr6 fsz cnt\n");
|
|
seq_printf(s, "-------------------------- ----- ---------- "
|
|
"-------------- ---- ------ ---------- ---- "
|
|
"---- ----- -----\n");
|
|
} else {
|
|
device = (struct device *) it;
|
|
card = device->driver_data;
|
|
seq_printf(s, "%s/%s/%s x%02X %-10s %-14s %-4i ",
|
|
CARD_RDEV_ID(card),
|
|
CARD_WDEV_ID(card),
|
|
CARD_DDEV_ID(card),
|
|
card->info.chpid,
|
|
QETH_CARD_IFNAME(card),
|
|
qeth_get_cardname_short(card),
|
|
card->info.portno);
|
|
if (card->lan_online)
|
|
seq_printf(s, "%-6s %-10s %-4s %-4s %-5s %-5i\n",
|
|
qeth_get_checksum_str(card),
|
|
qeth_get_prioq_str(card, tmp),
|
|
qeth_get_router_str(card, 4),
|
|
qeth_get_router_str(card, 6),
|
|
qeth_get_bufsize_str(card),
|
|
card->qdio.in_buf_pool.buf_count);
|
|
else
|
|
seq_printf(s, " +++ LAN OFFLINE +++\n");
|
|
put_device(device);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static struct seq_operations qeth_procfile_seq_ops = {
|
|
.start = qeth_procfile_seq_start,
|
|
.stop = qeth_procfile_seq_stop,
|
|
.next = qeth_procfile_seq_next,
|
|
.show = qeth_procfile_seq_show,
|
|
};
|
|
|
|
static int
|
|
qeth_procfile_open(struct inode *inode, struct file *file)
|
|
{
|
|
return seq_open(file, &qeth_procfile_seq_ops);
|
|
}
|
|
|
|
static const struct file_operations qeth_procfile_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = qeth_procfile_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = seq_release,
|
|
};
|
|
|
|
/***** /proc/qeth_perf *****/
|
|
#define QETH_PERF_PROCFILE_NAME "qeth_perf"
|
|
static struct proc_dir_entry *qeth_perf_procfile;
|
|
|
|
static int
|
|
qeth_perf_procfile_seq_show(struct seq_file *s, void *it)
|
|
{
|
|
struct device *device;
|
|
struct qeth_card *card;
|
|
|
|
|
|
if (it == SEQ_START_TOKEN)
|
|
return 0;
|
|
|
|
device = (struct device *) it;
|
|
card = device->driver_data;
|
|
seq_printf(s, "For card with devnos %s/%s/%s (%s):\n",
|
|
CARD_RDEV_ID(card),
|
|
CARD_WDEV_ID(card),
|
|
CARD_DDEV_ID(card),
|
|
QETH_CARD_IFNAME(card)
|
|
);
|
|
if (!card->options.performance_stats)
|
|
seq_printf(s, "Performance statistics are deactivated.\n");
|
|
seq_printf(s, " Skb's/buffers received : %lu/%u\n"
|
|
" Skb's/buffers sent : %lu/%u\n\n",
|
|
card->stats.rx_packets -
|
|
card->perf_stats.initial_rx_packets,
|
|
card->perf_stats.bufs_rec,
|
|
card->stats.tx_packets -
|
|
card->perf_stats.initial_tx_packets,
|
|
card->perf_stats.bufs_sent
|
|
);
|
|
seq_printf(s, " Skb's/buffers sent without packing : %lu/%u\n"
|
|
" Skb's/buffers sent with packing : %u/%u\n\n",
|
|
card->stats.tx_packets - card->perf_stats.initial_tx_packets
|
|
- card->perf_stats.skbs_sent_pack,
|
|
card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack,
|
|
card->perf_stats.skbs_sent_pack,
|
|
card->perf_stats.bufs_sent_pack
|
|
);
|
|
seq_printf(s, " Skbs sent in SG mode : %u\n"
|
|
" Skb fragments sent in SG mode : %u\n\n",
|
|
card->perf_stats.sg_skbs_sent,
|
|
card->perf_stats.sg_frags_sent);
|
|
seq_printf(s, " Skbs received in SG mode : %u\n"
|
|
" Skb fragments received in SG mode : %u\n"
|
|
" Page allocations for rx SG mode : %u\n\n",
|
|
card->perf_stats.sg_skbs_rx,
|
|
card->perf_stats.sg_frags_rx,
|
|
card->perf_stats.sg_alloc_page_rx);
|
|
seq_printf(s, " large_send tx (in Kbytes) : %u\n"
|
|
" large_send count : %u\n\n",
|
|
card->perf_stats.large_send_bytes >> 10,
|
|
card->perf_stats.large_send_cnt);
|
|
seq_printf(s, " Packing state changes no pkg.->packing : %u/%u\n"
|
|
" Watermarks L/H : %i/%i\n"
|
|
" Current buffer usage (outbound q's) : "
|
|
"%i/%i/%i/%i\n\n",
|
|
card->perf_stats.sc_dp_p, card->perf_stats.sc_p_dp,
|
|
QETH_LOW_WATERMARK_PACK, QETH_HIGH_WATERMARK_PACK,
|
|
atomic_read(&card->qdio.out_qs[0]->used_buffers),
|
|
(card->qdio.no_out_queues > 1)?
|
|
atomic_read(&card->qdio.out_qs[1]->used_buffers)
|
|
: 0,
|
|
(card->qdio.no_out_queues > 2)?
|
|
atomic_read(&card->qdio.out_qs[2]->used_buffers)
|
|
: 0,
|
|
(card->qdio.no_out_queues > 3)?
|
|
atomic_read(&card->qdio.out_qs[3]->used_buffers)
|
|
: 0
|
|
);
|
|
seq_printf(s, " Inbound handler time (in us) : %u\n"
|
|
" Inbound handler count : %u\n"
|
|
" Inbound do_QDIO time (in us) : %u\n"
|
|
" Inbound do_QDIO count : %u\n\n"
|
|
" Outbound handler time (in us) : %u\n"
|
|
" Outbound handler count : %u\n\n"
|
|
" Outbound time (in us, incl QDIO) : %u\n"
|
|
" Outbound count : %u\n"
|
|
" Outbound do_QDIO time (in us) : %u\n"
|
|
" Outbound do_QDIO count : %u\n\n",
|
|
card->perf_stats.inbound_time,
|
|
card->perf_stats.inbound_cnt,
|
|
card->perf_stats.inbound_do_qdio_time,
|
|
card->perf_stats.inbound_do_qdio_cnt,
|
|
card->perf_stats.outbound_handler_time,
|
|
card->perf_stats.outbound_handler_cnt,
|
|
card->perf_stats.outbound_time,
|
|
card->perf_stats.outbound_cnt,
|
|
card->perf_stats.outbound_do_qdio_time,
|
|
card->perf_stats.outbound_do_qdio_cnt
|
|
);
|
|
put_device(device);
|
|
return 0;
|
|
}
|
|
|
|
static struct seq_operations qeth_perf_procfile_seq_ops = {
|
|
.start = qeth_procfile_seq_start,
|
|
.stop = qeth_procfile_seq_stop,
|
|
.next = qeth_procfile_seq_next,
|
|
.show = qeth_perf_procfile_seq_show,
|
|
};
|
|
|
|
static int
|
|
qeth_perf_procfile_open(struct inode *inode, struct file *file)
|
|
{
|
|
return seq_open(file, &qeth_perf_procfile_seq_ops);
|
|
}
|
|
|
|
static const struct file_operations qeth_perf_procfile_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = qeth_perf_procfile_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = seq_release,
|
|
};
|
|
|
|
int __init
|
|
qeth_create_procfs_entries(void)
|
|
{
|
|
qeth_procfile = create_proc_entry(QETH_PROCFILE_NAME,
|
|
S_IFREG | 0444, NULL);
|
|
if (qeth_procfile)
|
|
qeth_procfile->proc_fops = &qeth_procfile_fops;
|
|
|
|
qeth_perf_procfile = create_proc_entry(QETH_PERF_PROCFILE_NAME,
|
|
S_IFREG | 0444, NULL);
|
|
if (qeth_perf_procfile)
|
|
qeth_perf_procfile->proc_fops = &qeth_perf_procfile_fops;
|
|
|
|
if (qeth_procfile &&
|
|
qeth_perf_procfile)
|
|
return 0;
|
|
else
|
|
return -ENOMEM;
|
|
}
|
|
|
|
void __exit
|
|
qeth_remove_procfs_entries(void)
|
|
{
|
|
if (qeth_procfile)
|
|
remove_proc_entry(QETH_PROCFILE_NAME, NULL);
|
|
if (qeth_perf_procfile)
|
|
remove_proc_entry(QETH_PERF_PROCFILE_NAME, NULL);
|
|
}
|
|
|