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34#include <linux/module.h>
35#include <linux/init.h>
36#include <linux/errno.h>
37
38#include <rdma/ib_user_verbs.h>
39#include <rdma/ib_addr.h>
40
41#include "usnic_common_util.h"
42#include "usnic_ib.h"
43#include "usnic_ib_qp_grp.h"
44#include "usnic_vnic.h"
45#include "usnic_ib_verbs.h"
46#include "usnic_log.h"
47
48static ssize_t usnic_ib_show_fw_ver(struct device *device,
49 struct device_attribute *attr,
50 char *buf)
51{
52 struct usnic_ib_dev *us_ibdev =
53 container_of(device, struct usnic_ib_dev, ib_dev.dev);
54 struct ethtool_drvinfo info;
55
56 mutex_lock(&us_ibdev->usdev_lock);
57 us_ibdev->netdev->ethtool_ops->get_drvinfo(us_ibdev->netdev, &info);
58 mutex_unlock(&us_ibdev->usdev_lock);
59
60 return scnprintf(buf, PAGE_SIZE, "%s\n", info.fw_version);
61}
62
63static ssize_t usnic_ib_show_board(struct device *device,
64 struct device_attribute *attr,
65 char *buf)
66{
67 struct usnic_ib_dev *us_ibdev =
68 container_of(device, struct usnic_ib_dev, ib_dev.dev);
69 unsigned short subsystem_device_id;
70
71 mutex_lock(&us_ibdev->usdev_lock);
72 subsystem_device_id = us_ibdev->pdev->subsystem_device;
73 mutex_unlock(&us_ibdev->usdev_lock);
74
75 return scnprintf(buf, PAGE_SIZE, "%hu\n", subsystem_device_id);
76}
77
78
79
80
81static ssize_t
82usnic_ib_show_config(struct device *device, struct device_attribute *attr,
83 char *buf)
84{
85 struct usnic_ib_dev *us_ibdev;
86 char *ptr;
87 unsigned left;
88 unsigned n;
89 enum usnic_vnic_res_type res_type;
90
91 us_ibdev = container_of(device, struct usnic_ib_dev, ib_dev.dev);
92
93
94 ptr = buf;
95 left = PAGE_SIZE;
96
97 mutex_lock(&us_ibdev->usdev_lock);
98 if (atomic_read(&us_ibdev->vf_cnt.refcount) > 0) {
99 char *busname;
100
101
102
103
104
105 busname = us_ibdev->pdev->bus->name;
106 if (strncmp(busname, "PCI Bus ", 8) == 0)
107 busname += 8;
108
109 n = scnprintf(ptr, left,
110 "%s: %s:%d.%d, %s, %pM, %u VFs\n Per VF:",
111 us_ibdev->ib_dev.name,
112 busname,
113 PCI_SLOT(us_ibdev->pdev->devfn),
114 PCI_FUNC(us_ibdev->pdev->devfn),
115 netdev_name(us_ibdev->netdev),
116 us_ibdev->ufdev->mac,
117 atomic_read(&us_ibdev->vf_cnt.refcount));
118 UPDATE_PTR_LEFT(n, ptr, left);
119
120 for (res_type = USNIC_VNIC_RES_TYPE_EOL;
121 res_type < USNIC_VNIC_RES_TYPE_MAX;
122 res_type++) {
123 if (us_ibdev->vf_res_cnt[res_type] == 0)
124 continue;
125 n = scnprintf(ptr, left, " %d %s%s",
126 us_ibdev->vf_res_cnt[res_type],
127 usnic_vnic_res_type_to_str(res_type),
128 (res_type < (USNIC_VNIC_RES_TYPE_MAX - 1)) ?
129 "," : "");
130 UPDATE_PTR_LEFT(n, ptr, left);
131 }
132 n = scnprintf(ptr, left, "\n");
133 UPDATE_PTR_LEFT(n, ptr, left);
134 } else {
135 n = scnprintf(ptr, left, "%s: no VFs\n",
136 us_ibdev->ib_dev.name);
137 UPDATE_PTR_LEFT(n, ptr, left);
138 }
139 mutex_unlock(&us_ibdev->usdev_lock);
140
141 return ptr - buf;
142}
143
144static ssize_t
145usnic_ib_show_iface(struct device *device, struct device_attribute *attr,
146 char *buf)
147{
148 struct usnic_ib_dev *us_ibdev;
149
150 us_ibdev = container_of(device, struct usnic_ib_dev, ib_dev.dev);
151
152 return scnprintf(buf, PAGE_SIZE, "%s\n",
153 netdev_name(us_ibdev->netdev));
154}
155
156static ssize_t
157usnic_ib_show_max_vf(struct device *device, struct device_attribute *attr,
158 char *buf)
159{
160 struct usnic_ib_dev *us_ibdev;
161
162 us_ibdev = container_of(device, struct usnic_ib_dev, ib_dev.dev);
163
164 return scnprintf(buf, PAGE_SIZE, "%u\n",
165 atomic_read(&us_ibdev->vf_cnt.refcount));
166}
167
168static ssize_t
169usnic_ib_show_qp_per_vf(struct device *device, struct device_attribute *attr,
170 char *buf)
171{
172 struct usnic_ib_dev *us_ibdev;
173 int qp_per_vf;
174
175 us_ibdev = container_of(device, struct usnic_ib_dev, ib_dev.dev);
176 qp_per_vf = max(us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_WQ],
177 us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_RQ]);
178
179 return scnprintf(buf, PAGE_SIZE,
180 "%d\n", qp_per_vf);
181}
182
183static ssize_t
184usnic_ib_show_cq_per_vf(struct device *device, struct device_attribute *attr,
185 char *buf)
186{
187 struct usnic_ib_dev *us_ibdev;
188
189 us_ibdev = container_of(device, struct usnic_ib_dev, ib_dev.dev);
190
191 return scnprintf(buf, PAGE_SIZE, "%d\n",
192 us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_CQ]);
193}
194
195static DEVICE_ATTR(fw_ver, S_IRUGO, usnic_ib_show_fw_ver, NULL);
196static DEVICE_ATTR(board_id, S_IRUGO, usnic_ib_show_board, NULL);
197static DEVICE_ATTR(config, S_IRUGO, usnic_ib_show_config, NULL);
198static DEVICE_ATTR(iface, S_IRUGO, usnic_ib_show_iface, NULL);
199static DEVICE_ATTR(max_vf, S_IRUGO, usnic_ib_show_max_vf, NULL);
200static DEVICE_ATTR(qp_per_vf, S_IRUGO, usnic_ib_show_qp_per_vf, NULL);
201static DEVICE_ATTR(cq_per_vf, S_IRUGO, usnic_ib_show_cq_per_vf, NULL);
202
203static struct device_attribute *usnic_class_attributes[] = {
204 &dev_attr_fw_ver,
205 &dev_attr_board_id,
206 &dev_attr_config,
207 &dev_attr_iface,
208 &dev_attr_max_vf,
209 &dev_attr_qp_per_vf,
210 &dev_attr_cq_per_vf,
211};
212
213struct qpn_attribute {
214 struct attribute attr;
215 ssize_t (*show)(struct usnic_ib_qp_grp *, char *buf);
216};
217
218
219
220
221static ssize_t
222usnic_ib_qpn_attr_show(struct kobject *kobj, struct attribute *attr, char *buf)
223{
224 struct usnic_ib_qp_grp *qp_grp;
225 struct qpn_attribute *qpn_attr;
226
227 qp_grp = container_of(kobj, struct usnic_ib_qp_grp, kobj);
228 qpn_attr = container_of(attr, struct qpn_attribute, attr);
229
230 return qpn_attr->show(qp_grp, buf);
231}
232
233static const struct sysfs_ops usnic_ib_qpn_sysfs_ops = {
234 .show = usnic_ib_qpn_attr_show
235};
236
237#define QPN_ATTR_RO(NAME) \
238struct qpn_attribute qpn_attr_##NAME = __ATTR_RO(NAME)
239
240static ssize_t context_show(struct usnic_ib_qp_grp *qp_grp, char *buf)
241{
242 return scnprintf(buf, PAGE_SIZE, "0x%p\n", qp_grp->ctx);
243}
244
245static ssize_t summary_show(struct usnic_ib_qp_grp *qp_grp, char *buf)
246{
247 int i, j, n;
248 int left;
249 char *ptr;
250 struct usnic_vnic_res_chunk *res_chunk;
251 struct usnic_vnic_res *vnic_res;
252
253 left = PAGE_SIZE;
254 ptr = buf;
255
256 n = scnprintf(ptr, left,
257 "QPN: %d State: (%s) PID: %u VF Idx: %hu ",
258 qp_grp->ibqp.qp_num,
259 usnic_ib_qp_grp_state_to_string(qp_grp->state),
260 qp_grp->owner_pid,
261 usnic_vnic_get_index(qp_grp->vf->vnic));
262 UPDATE_PTR_LEFT(n, ptr, left);
263
264 for (i = 0; qp_grp->res_chunk_list[i]; i++) {
265 res_chunk = qp_grp->res_chunk_list[i];
266 for (j = 0; j < res_chunk->cnt; j++) {
267 vnic_res = res_chunk->res[j];
268 n = scnprintf(ptr, left, "%s[%d] ",
269 usnic_vnic_res_type_to_str(vnic_res->type),
270 vnic_res->vnic_idx);
271 UPDATE_PTR_LEFT(n, ptr, left);
272 }
273 }
274
275 n = scnprintf(ptr, left, "\n");
276 UPDATE_PTR_LEFT(n, ptr, left);
277
278 return ptr - buf;
279}
280
281static QPN_ATTR_RO(context);
282static QPN_ATTR_RO(summary);
283
284static struct attribute *usnic_ib_qpn_default_attrs[] = {
285 &qpn_attr_context.attr,
286 &qpn_attr_summary.attr,
287 NULL
288};
289
290static struct kobj_type usnic_ib_qpn_type = {
291 .sysfs_ops = &usnic_ib_qpn_sysfs_ops,
292 .default_attrs = usnic_ib_qpn_default_attrs
293};
294
295int usnic_ib_sysfs_register_usdev(struct usnic_ib_dev *us_ibdev)
296{
297 int i;
298 int err;
299 for (i = 0; i < ARRAY_SIZE(usnic_class_attributes); ++i) {
300 err = device_create_file(&us_ibdev->ib_dev.dev,
301 usnic_class_attributes[i]);
302 if (err) {
303 usnic_err("Failed to create device file %d for %s eith err %d",
304 i, us_ibdev->ib_dev.name, err);
305 return -EINVAL;
306 }
307 }
308
309
310 kobject_get(&us_ibdev->ib_dev.dev.kobj);
311 us_ibdev->qpn_kobj = kobject_create_and_add("qpn",
312 &us_ibdev->ib_dev.dev.kobj);
313 if (us_ibdev->qpn_kobj == NULL) {
314 kobject_put(&us_ibdev->ib_dev.dev.kobj);
315 return -ENOMEM;
316 }
317
318 return 0;
319}
320
321void usnic_ib_sysfs_unregister_usdev(struct usnic_ib_dev *us_ibdev)
322{
323 int i;
324 for (i = 0; i < ARRAY_SIZE(usnic_class_attributes); ++i) {
325 device_remove_file(&us_ibdev->ib_dev.dev,
326 usnic_class_attributes[i]);
327 }
328
329 kobject_put(us_ibdev->qpn_kobj);
330}
331
332void usnic_ib_sysfs_qpn_add(struct usnic_ib_qp_grp *qp_grp)
333{
334 struct usnic_ib_dev *us_ibdev;
335 int err;
336
337 us_ibdev = qp_grp->vf->pf;
338
339 err = kobject_init_and_add(&qp_grp->kobj, &usnic_ib_qpn_type,
340 kobject_get(us_ibdev->qpn_kobj),
341 "%d", qp_grp->grp_id);
342 if (err) {
343 kobject_put(us_ibdev->qpn_kobj);
344 return;
345 }
346}
347
348void usnic_ib_sysfs_qpn_remove(struct usnic_ib_qp_grp *qp_grp)
349{
350 struct usnic_ib_dev *us_ibdev;
351
352 us_ibdev = qp_grp->vf->pf;
353
354 kobject_put(&qp_grp->kobj);
355 kobject_put(us_ibdev->qpn_kobj);
356}
357
