^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * Copyright 2012 Cisco Systems, Inc. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * This program is free software; you may redistribute it and/or modify
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * it under the terms of the GNU General Public License as published by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * the Free Software Foundation; version 2 of the License.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * SOFTWARE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/debugfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/vmalloc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include "fnic.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) static struct dentry *fnic_trace_debugfs_root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) static struct dentry *fnic_trace_debugfs_file;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) static struct dentry *fnic_trace_enable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) static struct dentry *fnic_stats_debugfs_root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) static struct dentry *fnic_fc_trace_debugfs_file;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) static struct dentry *fnic_fc_rdata_trace_debugfs_file;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) static struct dentry *fnic_fc_trace_enable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) static struct dentry *fnic_fc_trace_clear;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) struct fc_trace_flag_type {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) u8 fc_row_file;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) u8 fc_normal_file;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) u8 fnic_trace;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) u8 fc_trace;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) u8 fc_clear;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) static struct fc_trace_flag_type *fc_trc_flag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) * fnic_debugfs_init - Initialize debugfs for fnic debug logging
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) * Description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) * When Debugfs is configured this routine sets up the fnic debugfs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) * file system. If not already created, this routine will create the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) * fnic directory and statistics directory for trace buffer and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) * stats logging.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) int fnic_debugfs_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) fnic_trace_debugfs_root = debugfs_create_dir("fnic", NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) fnic_stats_debugfs_root = debugfs_create_dir("statistics",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) fnic_trace_debugfs_root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) /* Allocate memory to structure */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) fc_trc_flag = (struct fc_trace_flag_type *)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) vmalloc(sizeof(struct fc_trace_flag_type));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) if (fc_trc_flag) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) fc_trc_flag->fc_row_file = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) fc_trc_flag->fc_normal_file = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) fc_trc_flag->fnic_trace = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) fc_trc_flag->fc_trace = 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) fc_trc_flag->fc_clear = 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) * fnic_debugfs_terminate - Tear down debugfs infrastructure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) * Description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) * When Debugfs is configured this routine removes debugfs file system
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) * elements that are specific to fnic.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) void fnic_debugfs_terminate(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) debugfs_remove(fnic_stats_debugfs_root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) fnic_stats_debugfs_root = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) debugfs_remove(fnic_trace_debugfs_root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) fnic_trace_debugfs_root = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) if (fc_trc_flag)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) vfree(fc_trc_flag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) * fnic_trace_ctrl_read -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) * Read trace_enable ,fc_trace_enable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) * or fc_trace_clear debugfs file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) * @filp: The file pointer to read from.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) * @ubuf: The buffer to copy the data to.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) * @cnt: The number of bytes to read.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) * @ppos: The position in the file to start reading from.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) * Description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) * This routine reads value of variable fnic_tracing_enabled or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) * fnic_fc_tracing_enabled or fnic_fc_trace_cleared
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) * and stores into local @buf.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) * It will start reading file at @ppos and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) * copy up to @cnt of data to @ubuf from @buf.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) * Returns:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) * This function returns the amount of data that was read.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) static ssize_t fnic_trace_ctrl_read(struct file *filp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) char __user *ubuf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) size_t cnt, loff_t *ppos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) char buf[64];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) int len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) u8 *trace_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) trace_type = (u8 *)filp->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) if (*trace_type == fc_trc_flag->fnic_trace)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) len = sprintf(buf, "%d\n", fnic_tracing_enabled);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) else if (*trace_type == fc_trc_flag->fc_trace)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) len = sprintf(buf, "%d\n", fnic_fc_tracing_enabled);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) else if (*trace_type == fc_trc_flag->fc_clear)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) len = sprintf(buf, "%d\n", fnic_fc_trace_cleared);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) pr_err("fnic: Cannot read to any debugfs file\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) return simple_read_from_buffer(ubuf, cnt, ppos, buf, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) * fnic_trace_ctrl_write -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) * Write to trace_enable, fc_trace_enable or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) * fc_trace_clear debugfs file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) * @filp: The file pointer to write from.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) * @ubuf: The buffer to copy the data from.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) * @cnt: The number of bytes to write.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) * @ppos: The position in the file to start writing to.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) * Description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) * This routine writes data from user buffer @ubuf to buffer @buf and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) * sets fc_trace_enable ,tracing_enable or fnic_fc_trace_cleared
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) * value as per user input.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) * Returns:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) * This function returns the amount of data that was written.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) static ssize_t fnic_trace_ctrl_write(struct file *filp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) const char __user *ubuf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) size_t cnt, loff_t *ppos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) char buf[64];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) unsigned long val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) u8 *trace_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) trace_type = (u8 *)filp->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) if (cnt >= sizeof(buf))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) if (copy_from_user(&buf, ubuf, cnt))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) buf[cnt] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) ret = kstrtoul(buf, 10, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) if (*trace_type == fc_trc_flag->fnic_trace)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) fnic_tracing_enabled = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) else if (*trace_type == fc_trc_flag->fc_trace)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) fnic_fc_tracing_enabled = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) else if (*trace_type == fc_trc_flag->fc_clear)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) fnic_fc_trace_cleared = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) pr_err("fnic: cannot write to any debugfs file\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) (*ppos)++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) return cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) static const struct file_operations fnic_trace_ctrl_fops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) .open = simple_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) .read = fnic_trace_ctrl_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) .write = fnic_trace_ctrl_write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) * fnic_trace_debugfs_open - Open the fnic trace log
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) * @inode: The inode pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) * @file: The file pointer to attach the log output
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) * Description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) * This routine is the entry point for the debugfs open file operation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) * It allocates the necessary buffer for the log, fills the buffer from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) * the in-memory log and then returns a pointer to that log in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) * the private_data field in @file.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) * Returns:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) * This function returns zero if successful. On error it will return
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) * a negative error value.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) static int fnic_trace_debugfs_open(struct inode *inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) struct file *file)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) fnic_dbgfs_t *fnic_dbg_prt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) u8 *rdata_ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) rdata_ptr = (u8 *)inode->i_private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) fnic_dbg_prt = kzalloc(sizeof(fnic_dbgfs_t), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) if (!fnic_dbg_prt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) if (*rdata_ptr == fc_trc_flag->fnic_trace) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) fnic_dbg_prt->buffer = vmalloc(array3_size(3, trace_max_pages,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) PAGE_SIZE));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) if (!fnic_dbg_prt->buffer) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) kfree(fnic_dbg_prt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) memset((void *)fnic_dbg_prt->buffer, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 3 * (trace_max_pages * PAGE_SIZE));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) fnic_dbg_prt->buffer_len = fnic_get_trace_data(fnic_dbg_prt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) fnic_dbg_prt->buffer =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) vmalloc(array3_size(3, fnic_fc_trace_max_pages,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) PAGE_SIZE));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) if (!fnic_dbg_prt->buffer) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) kfree(fnic_dbg_prt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) memset((void *)fnic_dbg_prt->buffer, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 3 * (fnic_fc_trace_max_pages * PAGE_SIZE));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) fnic_dbg_prt->buffer_len =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) fnic_fc_trace_get_data(fnic_dbg_prt, *rdata_ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) file->private_data = fnic_dbg_prt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) * fnic_trace_debugfs_lseek - Seek through a debugfs file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) * @file: The file pointer to seek through.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) * @offset: The offset to seek to or the amount to seek by.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) * @howto: Indicates how to seek.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) * Description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) * This routine is the entry point for the debugfs lseek file operation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) * The @howto parameter indicates whether @offset is the offset to directly
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) * seek to, or if it is a value to seek forward or reverse by. This function
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) * figures out what the new offset of the debugfs file will be and assigns
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) * that value to the f_pos field of @file.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) * Returns:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) * This function returns the new offset if successful and returns a negative
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) * error if unable to process the seek.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) static loff_t fnic_trace_debugfs_lseek(struct file *file,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) loff_t offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) int howto)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) fnic_dbgfs_t *fnic_dbg_prt = file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) return fixed_size_llseek(file, offset, howto,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) fnic_dbg_prt->buffer_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) * fnic_trace_debugfs_read - Read a debugfs file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) * @file: The file pointer to read from.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) * @ubuf: The buffer to copy the data to.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) * @nbytes: The number of bytes to read.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) * @pos: The position in the file to start reading from.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) * Description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) * This routine reads data from the buffer indicated in the private_data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) * field of @file. It will start reading at @pos and copy up to @nbytes of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) * data to @ubuf.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) * Returns:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) * This function returns the amount of data that was read (this could be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) * less than @nbytes if the end of the file was reached).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) static ssize_t fnic_trace_debugfs_read(struct file *file,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) char __user *ubuf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) size_t nbytes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) loff_t *pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) fnic_dbgfs_t *fnic_dbg_prt = file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) rc = simple_read_from_buffer(ubuf, nbytes, pos,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) fnic_dbg_prt->buffer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) fnic_dbg_prt->buffer_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) * fnic_trace_debugfs_release - Release the buffer used to store
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) * debugfs file data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) * @inode: The inode pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) * @file: The file pointer that contains the buffer to release
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) * Description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) * This routine frees the buffer that was allocated when the debugfs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) * file was opened.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) * Returns:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) * This function returns zero.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) static int fnic_trace_debugfs_release(struct inode *inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) struct file *file)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) fnic_dbgfs_t *fnic_dbg_prt = file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) vfree(fnic_dbg_prt->buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) kfree(fnic_dbg_prt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) static const struct file_operations fnic_trace_debugfs_fops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) .open = fnic_trace_debugfs_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) .llseek = fnic_trace_debugfs_lseek,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) .read = fnic_trace_debugfs_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) .release = fnic_trace_debugfs_release,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) * fnic_trace_debugfs_init - Initialize debugfs for fnic trace logging
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) * Description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) * When Debugfs is configured this routine sets up the fnic debugfs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) * file system. If not already created, this routine will create the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) * create file trace to log fnic trace buffer output into debugfs and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) * it will also create file trace_enable to control enable/disable of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) * trace logging into trace buffer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) void fnic_trace_debugfs_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) fnic_trace_enable = debugfs_create_file("tracing_enable",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) S_IFREG|S_IRUGO|S_IWUSR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) fnic_trace_debugfs_root,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) &(fc_trc_flag->fnic_trace),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) &fnic_trace_ctrl_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) fnic_trace_debugfs_file = debugfs_create_file("trace",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) S_IFREG|S_IRUGO|S_IWUSR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) fnic_trace_debugfs_root,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) &(fc_trc_flag->fnic_trace),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) &fnic_trace_debugfs_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) * fnic_trace_debugfs_terminate - Tear down debugfs infrastructure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) * Description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) * When Debugfs is configured this routine removes debugfs file system
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) * elements that are specific to fnic trace logging.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) void fnic_trace_debugfs_terminate(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) debugfs_remove(fnic_trace_debugfs_file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) fnic_trace_debugfs_file = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) debugfs_remove(fnic_trace_enable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) fnic_trace_enable = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) * fnic_fc_trace_debugfs_init -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) * Initialize debugfs for fnic control frame trace logging
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) * Description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) * When Debugfs is configured this routine sets up the fnic_fc debugfs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) * file system. If not already created, this routine will create the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) * create file trace to log fnic fc trace buffer output into debugfs and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) * it will also create file fc_trace_enable to control enable/disable of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) * trace logging into trace buffer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) void fnic_fc_trace_debugfs_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) fnic_fc_trace_enable = debugfs_create_file("fc_trace_enable",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) S_IFREG|S_IRUGO|S_IWUSR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) fnic_trace_debugfs_root,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) &(fc_trc_flag->fc_trace),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) &fnic_trace_ctrl_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) fnic_fc_trace_clear = debugfs_create_file("fc_trace_clear",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) S_IFREG|S_IRUGO|S_IWUSR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) fnic_trace_debugfs_root,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) &(fc_trc_flag->fc_clear),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) &fnic_trace_ctrl_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) fnic_fc_rdata_trace_debugfs_file =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) debugfs_create_file("fc_trace_rdata",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) S_IFREG|S_IRUGO|S_IWUSR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) fnic_trace_debugfs_root,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) &(fc_trc_flag->fc_normal_file),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) &fnic_trace_debugfs_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) fnic_fc_trace_debugfs_file =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) debugfs_create_file("fc_trace",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) S_IFREG|S_IRUGO|S_IWUSR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) fnic_trace_debugfs_root,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) &(fc_trc_flag->fc_row_file),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) &fnic_trace_debugfs_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) * fnic_fc_trace_debugfs_terminate - Tear down debugfs infrastructure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) * Description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) * When Debugfs is configured this routine removes debugfs file system
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) * elements that are specific to fnic_fc trace logging.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) void fnic_fc_trace_debugfs_terminate(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) debugfs_remove(fnic_fc_trace_debugfs_file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) fnic_fc_trace_debugfs_file = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) debugfs_remove(fnic_fc_rdata_trace_debugfs_file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) fnic_fc_rdata_trace_debugfs_file = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) debugfs_remove(fnic_fc_trace_enable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) fnic_fc_trace_enable = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) debugfs_remove(fnic_fc_trace_clear);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) fnic_fc_trace_clear = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) * fnic_reset_stats_open - Open the reset_stats file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) * @inode: The inode pointer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) * @file: The file pointer to attach the stats reset flag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) * Description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) * This routine opens a debugsfs file reset_stats and stores i_private data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) * to debug structure to retrieve later for while performing other
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) * file oprations.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) * Returns:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) * This function returns zero if successful.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) static int fnic_reset_stats_open(struct inode *inode, struct file *file)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) struct stats_debug_info *debug;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) debug = kzalloc(sizeof(struct stats_debug_info), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) if (!debug)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) debug->i_private = inode->i_private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) file->private_data = debug;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) * fnic_reset_stats_read - Read a reset_stats debugfs file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) * @filp: The file pointer to read from.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) * @ubuf: The buffer to copy the data to.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) * @cnt: The number of bytes to read.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) * @ppos: The position in the file to start reading from.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) * Description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) * This routine reads value of variable reset_stats
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) * and stores into local @buf. It will start reading file at @ppos and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) * copy up to @cnt of data to @ubuf from @buf.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) * Returns:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) * This function returns the amount of data that was read.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) static ssize_t fnic_reset_stats_read(struct file *file,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) char __user *ubuf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) size_t cnt, loff_t *ppos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) struct stats_debug_info *debug = file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) struct fnic *fnic = (struct fnic *)debug->i_private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) char buf[64];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) int len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) len = sprintf(buf, "%u\n", fnic->reset_stats);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) return simple_read_from_buffer(ubuf, cnt, ppos, buf, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) * fnic_reset_stats_write - Write to reset_stats debugfs file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) * @filp: The file pointer to write from.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) * @ubuf: The buffer to copy the data from.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) * @cnt: The number of bytes to write.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) * @ppos: The position in the file to start writing to.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) * Description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) * This routine writes data from user buffer @ubuf to buffer @buf and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) * resets cumulative stats of fnic.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) * Returns:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) * This function returns the amount of data that was written.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) static ssize_t fnic_reset_stats_write(struct file *file,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) const char __user *ubuf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) size_t cnt, loff_t *ppos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) struct stats_debug_info *debug = file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) struct fnic *fnic = (struct fnic *)debug->i_private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) struct fnic_stats *stats = &fnic->fnic_stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) u64 *io_stats_p = (u64 *)&stats->io_stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) u64 *fw_stats_p = (u64 *)&stats->fw_stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) char buf[64];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) unsigned long val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) if (cnt >= sizeof(buf))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) if (copy_from_user(&buf, ubuf, cnt))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) buf[cnt] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) ret = kstrtoul(buf, 10, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) fnic->reset_stats = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) if (fnic->reset_stats) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) /* Skip variable is used to avoid descrepancies to Num IOs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) * and IO Completions stats. Skip incrementing No IO Compls
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) * for pending active IOs after reset stats
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) atomic64_set(&fnic->io_cmpl_skip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) atomic64_read(&stats->io_stats.active_ios));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) memset(&stats->abts_stats, 0, sizeof(struct abort_stats));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) memset(&stats->term_stats, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) sizeof(struct terminate_stats));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) memset(&stats->reset_stats, 0, sizeof(struct reset_stats));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) memset(&stats->misc_stats, 0, sizeof(struct misc_stats));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) memset(&stats->vlan_stats, 0, sizeof(struct vlan_stats));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) memset(io_stats_p+1, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) sizeof(struct io_path_stats) - sizeof(u64));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) memset(fw_stats_p+1, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) sizeof(struct fw_stats) - sizeof(u64));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) ktime_get_real_ts64(&stats->stats_timestamps.last_reset_time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) (*ppos)++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) return cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) * fnic_reset_stats_release - Release the buffer used to store
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) * debugfs file data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) * @inode: The inode pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) * @file: The file pointer that contains the buffer to release
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) * Description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) * This routine frees the buffer that was allocated when the debugfs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) * file was opened.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) * Returns:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) * This function returns zero.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) static int fnic_reset_stats_release(struct inode *inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) struct file *file)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) struct stats_debug_info *debug = file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) kfree(debug);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) * fnic_stats_debugfs_open - Open the stats file for specific host
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) * and get fnic stats.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) * @inode: The inode pointer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) * @file: The file pointer to attach the specific host statistics.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) * Description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) * This routine opens a debugsfs file stats of specific host and print
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) * fnic stats.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) * Returns:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) * This function returns zero if successful.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) static int fnic_stats_debugfs_open(struct inode *inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) struct file *file)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) struct fnic *fnic = inode->i_private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) struct fnic_stats *fnic_stats = &fnic->fnic_stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) struct stats_debug_info *debug;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) int buf_size = 2 * PAGE_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) debug = kzalloc(sizeof(struct stats_debug_info), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) if (!debug)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) debug->debug_buffer = vmalloc(buf_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) if (!debug->debug_buffer) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) kfree(debug);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) debug->buf_size = buf_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) memset((void *)debug->debug_buffer, 0, buf_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) debug->buffer_len = fnic_get_stats_data(debug, fnic_stats);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) file->private_data = debug;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) * fnic_stats_debugfs_read - Read a debugfs file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) * @file: The file pointer to read from.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) * @ubuf: The buffer to copy the data to.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) * @nbytes: The number of bytes to read.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) * @pos: The position in the file to start reading from.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) * Description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) * This routine reads data from the buffer indicated in the private_data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) * field of @file. It will start reading at @pos and copy up to @nbytes of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) * data to @ubuf.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) * Returns:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) * This function returns the amount of data that was read (this could be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) * less than @nbytes if the end of the file was reached).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) static ssize_t fnic_stats_debugfs_read(struct file *file,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) char __user *ubuf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) size_t nbytes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) loff_t *pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) struct stats_debug_info *debug = file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) rc = simple_read_from_buffer(ubuf, nbytes, pos,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) debug->debug_buffer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) debug->buffer_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) * fnic_stats_stats_release - Release the buffer used to store
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) * debugfs file data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) * @inode: The inode pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) * @file: The file pointer that contains the buffer to release
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) * Description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) * This routine frees the buffer that was allocated when the debugfs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) * file was opened.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) * Returns:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) * This function returns zero.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) static int fnic_stats_debugfs_release(struct inode *inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) struct file *file)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) struct stats_debug_info *debug = file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) vfree(debug->debug_buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) kfree(debug);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) static const struct file_operations fnic_stats_debugfs_fops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) .open = fnic_stats_debugfs_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) .read = fnic_stats_debugfs_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) .release = fnic_stats_debugfs_release,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) static const struct file_operations fnic_reset_debugfs_fops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) .open = fnic_reset_stats_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) .read = fnic_reset_stats_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) .write = fnic_reset_stats_write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) .release = fnic_reset_stats_release,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) * fnic_stats_init - Initialize stats struct and create stats file per fnic
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) * Description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) * When Debugfs is configured this routine sets up the stats file per fnic
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) * It will create file stats and reset_stats under statistics/host# directory
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) * to log per fnic stats.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) void fnic_stats_debugfs_init(struct fnic *fnic)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) char name[16];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) snprintf(name, sizeof(name), "host%d", fnic->lport->host->host_no);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) fnic->fnic_stats_debugfs_host = debugfs_create_dir(name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) fnic_stats_debugfs_root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) fnic->fnic_stats_debugfs_file = debugfs_create_file("stats",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) S_IFREG|S_IRUGO|S_IWUSR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) fnic->fnic_stats_debugfs_host,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) fnic,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) &fnic_stats_debugfs_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) fnic->fnic_reset_debugfs_file = debugfs_create_file("reset_stats",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) S_IFREG|S_IRUGO|S_IWUSR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) fnic->fnic_stats_debugfs_host,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) fnic,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) &fnic_reset_debugfs_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) * fnic_stats_debugfs_remove - Tear down debugfs infrastructure of stats
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) * Description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) * When Debugfs is configured this routine removes debugfs file system
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) * elements that are specific to fnic stats.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) void fnic_stats_debugfs_remove(struct fnic *fnic)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) if (!fnic)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) debugfs_remove(fnic->fnic_stats_debugfs_file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) fnic->fnic_stats_debugfs_file = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) debugfs_remove(fnic->fnic_reset_debugfs_file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) fnic->fnic_reset_debugfs_file = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) debugfs_remove(fnic->fnic_stats_debugfs_host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) fnic->fnic_stats_debugfs_host = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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