diff options
Diffstat (limited to 'drivers/s390/net/ctcm_sysfs.c')
| -rw-r--r-- | drivers/s390/net/ctcm_sysfs.c | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/drivers/s390/net/ctcm_sysfs.c b/drivers/s390/net/ctcm_sysfs.c new file mode 100644 index 00000000000..bb2d13721d3 --- /dev/null +++ b/drivers/s390/net/ctcm_sysfs.c @@ -0,0 +1,210 @@ +/* + * drivers/s390/net/ctcm_sysfs.c + * + * Copyright IBM Corp. 2007, 2007 + * Authors: Peter Tiedemann (ptiedem@de.ibm.com) + * + */ + +#undef DEBUG +#undef DEBUGDATA +#undef DEBUGCCW + +#include <linux/sysfs.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); +} + +static ssize_t ctcm_buffer_write(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct net_device *ndev; + int bs1; + struct ctcm_priv *priv = dev_get_drvdata(dev); + + if (!(priv && priv->channel[READ] && + (ndev = priv->channel[READ]->netdev))) { + CTCM_DBF_TEXT(SETUP, CTC_DBF_ERROR, "bfnondev"); + return -ENODEV; + } + + sscanf(buf, "%u", &bs1); + 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[READ]->max_bufsize = bs1; + priv->channel[WRITE]->max_bufsize = bs1; + if (!(ndev->flags & IFF_RUNNING)) + ndev->mtu = bs1 - LL_HEADER_LENGTH - 2; + priv->channel[READ]->flags |= CHANNEL_FLAGS_BUFSIZE_CHANGED; + priv->channel[WRITE]->flags |= CHANNEL_FLAGS_BUFSIZE_CHANGED; + + CTCM_DBF_DEV(SETUP, ndev, buf); + return count; + +einval: + CTCM_DBF_DEV(SETUP, ndev, "buff_err"); + return -EINVAL; +} + +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[READ]->fsm)); + p += sprintf(p, " TX channel FSM state: %s\n", + fsm_getstate_str(priv->channel[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: %ld\n", + priv->channel[WRITE]->prof.tx_time); + + printk(KERN_INFO "Statistics for %s:\n%s", + priv->channel[WRITE]->netdev->name, sbuf); + kfree(sbuf); + return; +} + +static ssize_t stats_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct ctcm_priv *priv = dev_get_drvdata(dev); + if (!priv) + return -ENODEV; + ctcm_print_statistics(priv); + return sprintf(buf, "0\n"); +} + +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[WRITE]->prof)); + return count; +} + +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); +} + +static ssize_t ctcm_proto_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + int value; + struct ctcm_priv *priv = dev_get_drvdata(dev); + + if (!priv) + return -ENODEV; + sscanf(buf, "%u", &value); + if (!((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; +} + +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", + cu3088_type[cgdev->cdev[0]->id.driver_info]); +} + +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, + NULL, +}; + +static struct attribute_group ctcm_attr_group = { + .attrs = ctcm_attr, +}; + +int ctcm_add_attributes(struct device *dev) +{ + int rc; + + rc = device_create_file(dev, &dev_attr_stats); + + return rc; +} + +void ctcm_remove_attributes(struct device *dev) +{ + device_remove_file(dev, &dev_attr_stats); +} + +int ctcm_add_files(struct device *dev) +{ + return sysfs_create_group(&dev->kobj, &ctcm_attr_group); +} + +void ctcm_remove_files(struct device *dev) +{ + sysfs_remove_group(&dev->kobj, &ctcm_attr_group); +} + |