cregit-Linux how code gets into the kernel

Release 4.11 drivers/s390/net/ctcm_sysfs.c

Directory: drivers/s390/net
/*
 * Copyright IBM Corp. 2007, 2007
 * Authors:     Peter Tiedemann (ptiedem@de.ibm.com)
 *
 */


#undef DEBUG

#undef DEBUGDATA

#undef DEBUGCCW


#define KMSG_COMPONENT "ctcm"

#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt

#include <linux/device.h>
#include <linux/sysfs.h>
#include <linux/slab.h>
#include "ctcm_main.h"

/*
 * sysfs attributes
 */


static ssize_t ctcm_buffer_show(struct device *dev, struct device_attribute *attr, char *buf) { struct ctcm_priv *priv = dev_get_drvdata(dev); if (!priv) return -ENODEV; return sprintf(buf, "%d\n", priv->buffer_size); }

Contributors

PersonTokensPropCommitsCommitProp
Peter Tiedemann51100.00%1100.00%
Total51100.00%1100.00%


static ssize_t ctcm_buffer_write(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct net_device *ndev; unsigned int bs1; struct ctcm_priv *priv = dev_get_drvdata(dev); int rc; ndev = priv->channel[CTCM_READ]->netdev; if (!(priv && priv->channel[CTCM_READ] && ndev)) { CTCM_DBF_TEXT(SETUP, CTC_DBF_ERROR, "bfnondev"); return -ENODEV; } rc = kstrtouint(buf, 0, &bs1); if (rc) goto einval; if (bs1 > CTCM_BUFSIZE_LIMIT) goto einval; if (bs1 < (576 + LL_HEADER_LENGTH + 2)) goto einval; priv->buffer_size = bs1; /* just to overwrite the default */ if ((ndev->flags & IFF_RUNNING) && (bs1 < (ndev->mtu + LL_HEADER_LENGTH + 2))) goto einval; priv->channel[CTCM_READ]->max_bufsize = bs1; priv->channel[CTCM_WRITE]->max_bufsize = bs1; if (!(ndev->flags & IFF_RUNNING)) ndev->mtu = bs1 - LL_HEADER_LENGTH - 2; priv->channel[CTCM_READ]->flags |= CHANNEL_FLAGS_BUFSIZE_CHANGED; priv->channel[CTCM_WRITE]->flags |= CHANNEL_FLAGS_BUFSIZE_CHANGED; CTCM_DBF_DEV(SETUP, ndev, buf); return count; einval: CTCM_DBF_DEV(SETUP, ndev, "buff_err"); return -EINVAL; }

Contributors

PersonTokensPropCommitsCommitProp
Peter Tiedemann22687.94%125.00%
Ursula Braun2911.28%250.00%
Thomas Richter20.78%125.00%
Total257100.00%4100.00%


static void ctcm_print_statistics(struct ctcm_priv *priv) { char *sbuf; char *p; if (!priv) return; sbuf = kmalloc(2048, GFP_KERNEL); if (sbuf == NULL) return; p = sbuf; p += sprintf(p, " Device FSM state: %s\n", fsm_getstate_str(priv->fsm)); p += sprintf(p, " RX channel FSM state: %s\n", fsm_getstate_str(priv->channel[CTCM_READ]->fsm)); p += sprintf(p, " TX channel FSM state: %s\n", fsm_getstate_str(priv->channel[CTCM_WRITE]->fsm)); p += sprintf(p, " Max. TX buffer used: %ld\n", priv->channel[WRITE]->prof.maxmulti); p += sprintf(p, " Max. chained SKBs: %ld\n", priv->channel[WRITE]->prof.maxcqueue); p += sprintf(p, " TX single write ops: %ld\n", priv->channel[WRITE]->prof.doios_single); p += sprintf(p, " TX multi write ops: %ld\n", priv->channel[WRITE]->prof.doios_multi); p += sprintf(p, " Netto bytes written: %ld\n", priv->channel[WRITE]->prof.txlen); p += sprintf(p, " Max. TX IO-time: %u\n", jiffies_to_usecs(priv->channel[WRITE]->prof.tx_time)); printk(KERN_INFO "Statistics for %s:\n%s", priv->channel[CTCM_WRITE]->netdev->name, sbuf); kfree(sbuf); return; }

Contributors

PersonTokensPropCommitsCommitProp
Peter Tiedemann24497.21%133.33%
Aya Mahfouz41.59%133.33%
Ursula Braun31.20%133.33%
Total251100.00%3100.00%


static ssize_t stats_show(struct device *dev, struct device_attribute *attr, char *buf) { struct ccwgroup_device *gdev = to_ccwgroupdev(dev); struct ctcm_priv *priv = dev_get_drvdata(dev); if (!priv || gdev->state != CCWGROUP_ONLINE) return -ENODEV; ctcm_print_statistics(priv); return sprintf(buf, "0\n"); }

Contributors

PersonTokensPropCommitsCommitProp
Peter Tiedemann5276.47%150.00%
Sebastian Ott1623.53%150.00%
Total68100.00%2100.00%


static ssize_t stats_write(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct ctcm_priv *priv = dev_get_drvdata(dev); if (!priv) return -ENODEV; /* Reset statistics */ memset(&priv->channel[WRITE]->prof, 0, sizeof(priv->channel[CTCM_WRITE]->prof)); return count; }

Contributors

PersonTokensPropCommitsCommitProp
Peter Tiedemann7398.65%150.00%
Ursula Braun11.35%150.00%
Total74100.00%2100.00%


static ssize_t ctcm_proto_show(struct device *dev, struct device_attribute *attr, char *buf) { struct ctcm_priv *priv = dev_get_drvdata(dev); if (!priv) return -ENODEV; return sprintf(buf, "%d\n", priv->protocol); }

Contributors

PersonTokensPropCommitsCommitProp
Peter Tiedemann51100.00%1100.00%
Total51100.00%1100.00%


static ssize_t ctcm_proto_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { int value, rc; struct ctcm_priv *priv = dev_get_drvdata(dev); if (!priv) return -ENODEV; rc = kstrtoint(buf, 0, &value); if (rc || !((value == CTCM_PROTO_S390) || (value == CTCM_PROTO_LINUX) || (value == CTCM_PROTO_MPC) || (value == CTCM_PROTO_OS390))) return -EINVAL; priv->protocol = value; CTCM_DBF_DEV(SETUP, dev, buf); return count; }

Contributors

PersonTokensPropCommitsCommitProp
Peter Tiedemann10592.92%133.33%
Ursula Braun65.31%133.33%
Thomas Richter21.77%133.33%
Total113100.00%3100.00%

static const char *ctcm_type[] = { "not a channel", "CTC/A", "FICON channel", "ESCON channel", "unknown channel type", "unsupported channel type", };
static ssize_t ctcm_type_show(struct device *dev, struct device_attribute *attr, char *buf) { struct ccwgroup_device *cgdev; cgdev = to_ccwgroupdev(dev); if (!cgdev) return -ENODEV; return sprintf(buf, "%s\n", ctcm_type[cgdev->cdev[0]->id.driver_info]); }

Contributors

PersonTokensPropCommitsCommitProp
Peter Tiedemann6298.41%150.00%
Ursula Braun11.59%150.00%
Total63100.00%2100.00%

static DEVICE_ATTR(buffer, 0644, ctcm_buffer_show, ctcm_buffer_write); static DEVICE_ATTR(protocol, 0644, ctcm_proto_show, ctcm_proto_store); static DEVICE_ATTR(type, 0444, ctcm_type_show, NULL); static DEVICE_ATTR(stats, 0644, stats_show, stats_write); static struct attribute *ctcm_attr[] = { &dev_attr_protocol.attr, &dev_attr_type.attr, &dev_attr_buffer.attr, &dev_attr_stats.attr, NULL, }; static struct attribute_group ctcm_attr_group = { .attrs = ctcm_attr, }; const struct attribute_group *ctcm_attr_groups[] = { &ctcm_attr_group, NULL, };

Overall Contributors

PersonTokensPropCommitsCommitProp
Peter Tiedemann98290.26%218.18%
Ursula Braun605.51%327.27%
Sebastian Ott333.03%19.09%
Thomas Richter40.37%19.09%
Aya Mahfouz40.37%19.09%
Tejun Heo30.28%19.09%
Heiko Carstens10.09%19.09%
Martin Schwidefsky10.09%19.09%
Total1088100.00%11100.00%
Directory: drivers/s390/net
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with cregit.