1 /*- 2 * Copyright (c) 2007 Scott Long 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23 * SUCH DAMAGE. 24 */ 25 26 #include <sys/cdefs.h> 27 #include <sys/types.h> 28 #include <sys/fcntl.h> 29 #include <sys/ioctl.h> 30 #include <sys/uio.h> 31 32 #include </sys/dev/mfi/mfireg.h> 33 #include </sys/dev/mfi/mfi_ioctl.h> 34 35 #include <errno.h> 36 #include <stdio.h> 37 38 /* 39 * Simple program to print out the queue stats on the given queue index. 40 * See /sys/sys/mfi_ioctl.h for the definitions of each queue index. 41 */ 42 43 void 44 usage(void) 45 { 46 printf("Usage: mfi_checkq <queue_number>\n"); 47 exit(1); 48 } 49 50 int 51 main(int argc, char **argv) 52 { 53 union mfi_statrequest sr; 54 int fd, retval, queue; 55 56 if (argc != 2) 57 usage(); 58 59 fd = open("/dev/mfi0", O_RDWR); 60 if (fd == -1) { 61 printf("couldn't open mfi0: %s\n", strerror(errno)); 62 return (-1); 63 } 64 65 queue = atoi(argv[1]); 66 printf("Getting stats for queue %d\n", queue); 67 bzero(&sr, sizeof(union mfi_statrequest)); 68 sr.ms_item = queue; 69 retval = ioctl(fd, MFIIO_STATS, &sr); 70 if (retval == -1) { 71 printf("error on ioctl: %s\n", strerror(errno)); 72 return (-1); 73 } 74 75 printf("length= %d, max= %d\n",sr.ms_qstat.q_length, sr.ms_qstat.q_max); 76 77 close(fd); 78 return 0; 79 } 80