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8
9#undef DEBUG
10#undef DEBUGDATA
11#undef DEBUGCCW
12
13#define KMSG_COMPONENT "ctcm"
14#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
15
16#include <linux/sysfs.h>
17#include "ctcm_main.h"
18
19
20
21
22
23static ssize_t ctcm_buffer_show(struct device *dev,
24 struct device_attribute *attr, char *buf)
25{
26 struct ctcm_priv *priv = dev_get_drvdata(dev);
27
28 if (!priv)
29 return -ENODEV;
30 return sprintf(buf, "%d\n", priv->buffer_size);
31}
32
33static ssize_t ctcm_buffer_write(struct device *dev,
34 struct device_attribute *attr, const char *buf, size_t count)
35{
36 struct net_device *ndev;
37 int bs1;
38 struct ctcm_priv *priv = dev_get_drvdata(dev);
39
40 if (!(priv && priv->channel[READ] &&
41 (ndev = priv->channel[READ]->netdev))) {
42 CTCM_DBF_TEXT(SETUP, CTC_DBF_ERROR, "bfnondev");
43 return -ENODEV;
44 }
45
46 sscanf(buf, "%u", &bs1);
47 if (bs1 > CTCM_BUFSIZE_LIMIT)
48 goto einval;
49 if (bs1 < (576 + LL_HEADER_LENGTH + 2))
50 goto einval;
51 priv->buffer_size = bs1;
52
53 if ((ndev->flags & IFF_RUNNING) &&
54 (bs1 < (ndev->mtu + LL_HEADER_LENGTH + 2)))
55 goto einval;
56
57 priv->channel[READ]->max_bufsize = bs1;
58 priv->channel[WRITE]->max_bufsize = bs1;
59 if (!(ndev->flags & IFF_RUNNING))
60 ndev->mtu = bs1 - LL_HEADER_LENGTH - 2;
61 priv->channel[READ]->flags |= CHANNEL_FLAGS_BUFSIZE_CHANGED;
62 priv->channel[WRITE]->flags |= CHANNEL_FLAGS_BUFSIZE_CHANGED;
63
64 CTCM_DBF_DEV(SETUP, ndev, buf);
65 return count;
66
67einval:
68 CTCM_DBF_DEV(SETUP, ndev, "buff_err");
69 return -EINVAL;
70}
71
72static void ctcm_print_statistics(struct ctcm_priv *priv)
73{
74 char *sbuf;
75 char *p;
76
77 if (!priv)
78 return;
79 sbuf = kmalloc(2048, GFP_KERNEL);
80 if (sbuf == NULL)
81 return;
82 p = sbuf;
83
84 p += sprintf(p, " Device FSM state: %s\n",
85 fsm_getstate_str(priv->fsm));
86 p += sprintf(p, " RX channel FSM state: %s\n",
87 fsm_getstate_str(priv->channel[READ]->fsm));
88 p += sprintf(p, " TX channel FSM state: %s\n",
89 fsm_getstate_str(priv->channel[WRITE]->fsm));
90 p += sprintf(p, " Max. TX buffer used: %ld\n",
91 priv->channel[WRITE]->prof.maxmulti);
92 p += sprintf(p, " Max. chained SKBs: %ld\n",
93 priv->channel[WRITE]->prof.maxcqueue);
94 p += sprintf(p, " TX single write ops: %ld\n",
95 priv->channel[WRITE]->prof.doios_single);
96 p += sprintf(p, " TX multi write ops: %ld\n",
97 priv->channel[WRITE]->prof.doios_multi);
98 p += sprintf(p, " Netto bytes written: %ld\n",
99 priv->channel[WRITE]->prof.txlen);
100 p += sprintf(p, " Max. TX IO-time: %ld\n",
101 priv->channel[WRITE]->prof.tx_time);
102
103 printk(KERN_INFO "Statistics for %s:\n%s",
104 priv->channel[WRITE]->netdev->name, sbuf);
105 kfree(sbuf);
106 return;
107}
108
109static ssize_t stats_show(struct device *dev,
110 struct device_attribute *attr, char *buf)
111{
112 struct ctcm_priv *priv = dev_get_drvdata(dev);
113 if (!priv)
114 return -ENODEV;
115 ctcm_print_statistics(priv);
116 return sprintf(buf, "0\n");
117}
118
119static ssize_t stats_write(struct device *dev, struct device_attribute *attr,
120 const char *buf, size_t count)
121{
122 struct ctcm_priv *priv = dev_get_drvdata(dev);
123 if (!priv)
124 return -ENODEV;
125
126 memset(&priv->channel[WRITE]->prof, 0,
127 sizeof(priv->channel[WRITE]->prof));
128 return count;
129}
130
131static ssize_t ctcm_proto_show(struct device *dev,
132 struct device_attribute *attr, char *buf)
133{
134 struct ctcm_priv *priv = dev_get_drvdata(dev);
135 if (!priv)
136 return -ENODEV;
137
138 return sprintf(buf, "%d\n", priv->protocol);
139}
140
141static ssize_t ctcm_proto_store(struct device *dev,
142 struct device_attribute *attr, const char *buf, size_t count)
143{
144 int value;
145 struct ctcm_priv *priv = dev_get_drvdata(dev);
146
147 if (!priv)
148 return -ENODEV;
149 sscanf(buf, "%u", &value);
150 if (!((value == CTCM_PROTO_S390) ||
151 (value == CTCM_PROTO_LINUX) ||
152 (value == CTCM_PROTO_MPC) ||
153 (value == CTCM_PROTO_OS390)))
154 return -EINVAL;
155 priv->protocol = value;
156 CTCM_DBF_DEV(SETUP, dev, buf);
157
158 return count;
159}
160
161static ssize_t ctcm_type_show(struct device *dev,
162 struct device_attribute *attr, char *buf)
163{
164 struct ccwgroup_device *cgdev;
165
166 cgdev = to_ccwgroupdev(dev);
167 if (!cgdev)
168 return -ENODEV;
169
170 return sprintf(buf, "%s\n",
171 cu3088_type[cgdev->cdev[0]->id.driver_info]);
172}
173
174static DEVICE_ATTR(buffer, 0644, ctcm_buffer_show, ctcm_buffer_write);
175static DEVICE_ATTR(protocol, 0644, ctcm_proto_show, ctcm_proto_store);
176static DEVICE_ATTR(type, 0444, ctcm_type_show, NULL);
177static DEVICE_ATTR(stats, 0644, stats_show, stats_write);
178
179static struct attribute *ctcm_attr[] = {
180 &dev_attr_protocol.attr,
181 &dev_attr_type.attr,
182 &dev_attr_buffer.attr,
183 NULL,
184};
185
186static struct attribute_group ctcm_attr_group = {
187 .attrs = ctcm_attr,
188};
189
190int ctcm_add_attributes(struct device *dev)
191{
192 int rc;
193
194 rc = device_create_file(dev, &dev_attr_stats);
195
196 return rc;
197}
198
199void ctcm_remove_attributes(struct device *dev)
200{
201 device_remove_file(dev, &dev_attr_stats);
202}
203
204int ctcm_add_files(struct device *dev)
205{
206 return sysfs_create_group(&dev->kobj, &ctcm_attr_group);
207}
208
209void ctcm_remove_files(struct device *dev)
210{
211 sysfs_remove_group(&dev->kobj, &ctcm_attr_group);
212}
213
214
