svn commit: r279461 - in head/usr.sbin: . iovctl
Ryan Stone
rstone at FreeBSD.org
Sun Mar 1 00:52:43 UTC 2015
Author: rstone
Date: Sun Mar 1 00:52:41 2015
New Revision: 279461
URL: https://svnweb.freebsd.org/changeset/base/279461
Log:
Add main() for iovctl and hook iovctl into build
Differential Revision: https://reviews.freebsd.org/D87
Reviewed by: jhb
MFC after: 1 month
Sponsored by: Sandvine Inc.
Added:
head/usr.sbin/iovctl/Makefile (contents, props changed)
head/usr.sbin/iovctl/iovctl.c (contents, props changed)
head/usr.sbin/iovctl/iovctl.h (contents, props changed)
Modified:
head/usr.sbin/Makefile
Modified: head/usr.sbin/Makefile
==============================================================================
--- head/usr.sbin/Makefile Sun Mar 1 00:52:34 2015 (r279460)
+++ head/usr.sbin/Makefile Sun Mar 1 00:52:41 2015 (r279461)
@@ -35,6 +35,7 @@ SUBDIR= adduser \
i2c \
ifmcstat \
iostat \
+ iovctl \
kldxref \
mailwrapper \
makefs \
Added: head/usr.sbin/iovctl/Makefile
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/usr.sbin/iovctl/Makefile Sun Mar 1 00:52:41 2015 (r279461)
@@ -0,0 +1,17 @@
+# $FreeBSD$
+
+PROG= iovctl
+SRCS= iovctl.c parse.c validate.c
+LIBADD= nv ucl m
+
+CFLAGS+=-I${.CURDIR}/../../contrib/libucl/include
+
+WARNS?=6
+
+MAN= \
+ iovctl.8 \
+ iovctl.conf.5 \
+
+.include <bsd.own.mk>
+.include <bsd.prog.mk>
+
Added: head/usr.sbin/iovctl/iovctl.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/usr.sbin/iovctl/iovctl.c Sun Mar 1 00:52:41 2015 (r279461)
@@ -0,0 +1,403 @@
+/*-
+ * Copyright (c) 2013-2015 Sandvine Inc. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/iov.h>
+
+#include <dnv.h>
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <nv.h>
+#include <regex.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "iovctl.h"
+
+static void config_action(const char *filename, int dryrun);
+static void delete_action(const char *device, int dryrun);
+static void print_schema(const char *device);
+
+/*
+ * Fetch the config schema from the kernel via ioctl. This function has to
+ * call the ioctl twice: the first returns the amount of memory that we need
+ * to allocate for the schema, and the second actually fetches the schema.
+ */
+static nvlist_t *
+get_schema(int fd)
+{
+ struct pci_iov_schema arg;
+ nvlist_t *schema;
+ int error;
+
+ /* Do the ioctl() once to fetch the size of the schema. */
+ arg.schema = NULL;
+ arg.len = 0;
+ arg.error = 0;
+ error = ioctl(fd, IOV_GET_SCHEMA, &arg);
+ if (error != 0)
+ err(1, "Could not fetch size of config schema");
+
+ arg.schema = malloc(arg.len);
+ if (arg.schema == NULL)
+ err(1, "Could not allocate %zu bytes for schema",
+ arg.len);
+
+ /* Now do the ioctl() for real to get the schema. */
+ error = ioctl(fd, IOV_GET_SCHEMA, &arg);
+ if (error != 0 || arg.error != 0) {
+ if (arg.error != 0)
+ errno = arg.error;
+ err(1, "Could not fetch config schema");
+ }
+
+ schema = nvlist_unpack(arg.schema, arg.len);
+ if (schema == NULL)
+ err(1, "Could not unpack schema");
+
+ free(arg.schema);
+ return (schema);
+}
+
+/*
+ * Call the ioctl that activates SR-IOV and creates the VFs.
+ */
+static void
+config_iov(int fd, const char *dev_name, const nvlist_t *config, int dryrun)
+{
+ struct pci_iov_arg arg;
+ int error;
+
+ arg.config = nvlist_pack(config, &arg.len);
+ if (arg.config == NULL)
+ err(1, "Could not pack configuration");
+
+ if (dryrun) {
+ printf("Would enable SR-IOV on device '%s'.\n", dev_name);
+ printf(
+ "The following configuration parameters would be used:\n");
+ nvlist_fdump(config, stdout);
+ printf(
+ "The configuration parameters consume %zu bytes when packed.\n",
+ arg.len);
+ } else {
+ error = ioctl(fd, IOV_CONFIG, &arg);
+ if (error != 0)
+ err(1, "Failed to configure SR-IOV");
+ }
+
+ free(arg.config);
+}
+
+static int
+open_device(const char *dev_name)
+{
+ char *dev;
+ int fd;
+ size_t copied, size;
+ long path_max;
+
+ path_max = pathconf("/dev", _PC_PATH_MAX);
+ if (path_max < 0)
+ err(1, "Could not get maximum path length");
+
+ size = path_max;
+ dev = malloc(size);
+ if (dev == NULL)
+ err(1, "Could not allocate memory for device path");
+
+ if (dev_name[0] == '/')
+ copied = strlcpy(dev, dev_name, size);
+ else
+ copied = snprintf(dev, size, "/dev/iov/%s", dev_name);
+
+ /* >= to account for null terminator. */
+ if (copied >= size)
+ errx(1, "Provided file name too long");
+
+ fd = open(dev, O_RDWR);
+ if (fd < 0)
+ err(1, "Could not open device '%s'", dev);
+
+ free(dev);
+ return (fd);
+}
+
+static void
+usage(void)
+{
+
+ warnx("Usage: iovctl -C -f <config file> [-n]");
+ warnx(" iovctl -D [-d <PF device> | -f <config file>] [-n]");
+ warnx(" iovctl -S [-d <PF device> | -f <config file>]");
+ exit(1);
+
+}
+
+enum main_action {
+ NONE,
+ CONFIG,
+ DELETE,
+ PRINT_SCHEMA,
+};
+
+int
+main(int argc, char **argv)
+{
+ char *device;
+ const char *filename;
+ int ch, dryrun;
+ enum main_action action;
+
+ device = NULL;
+ filename = NULL;
+ dryrun = 0;
+ action = NONE;
+
+ while ((ch = getopt(argc, argv, "Cd:Df:nS")) != -1) {
+ switch (ch) {
+ case 'C':
+ if (action != NONE) {
+ warnx(
+ "Only one of -C, -D or -S may be specified");
+ usage();
+ }
+ action = CONFIG;
+ break;
+ case 'd':
+ device = strdup(optarg);
+ break;
+ case 'D':
+ if (action != NONE) {
+ warnx(
+ "Only one of -C, -D or -S may be specified");
+ usage();
+ }
+ action = DELETE;
+ break;
+ case 'f':
+ filename = optarg;
+ break;
+ case 'n':
+ dryrun = 1;
+ break;
+ case 'S':
+ if (action != NONE) {
+ warnx(
+ "Only one of -C, -D or -S may be specified");
+ usage();
+ }
+ action = PRINT_SCHEMA;
+ break;
+ case '?':
+ warnx("Unrecognized argument '-%c'\n", optopt);
+ usage();
+ break;
+ }
+ }
+
+ if (device != NULL && filename != NULL) {
+ warnx("Only one of the -d and -f flags may be specified");
+ usage();
+ }
+
+ if (device == NULL && filename == NULL) {
+ warnx("Either the -d or -f flag must be specified");
+ usage();
+ }
+
+ switch (action) {
+ case CONFIG:
+ if (filename == NULL) {
+ warnx("-d flag cannot be used with the -C flag");
+ usage();
+ }
+ config_action(filename, dryrun);
+ break;
+ case DELETE:
+ if (device == NULL)
+ device = find_device(filename);
+ delete_action(device, dryrun);
+ free(device);
+ break;
+ case PRINT_SCHEMA:
+ if (dryrun) {
+ warnx("-n flag cannot be used with the -S flag");
+ usage();
+ }
+ if (device == NULL)
+ device = find_device(filename);
+ print_schema(device);
+ free(device);
+ break;
+ default:
+ usage();
+ break;
+ }
+
+ exit(0);
+}
+
+static void
+config_action(const char *filename, int dryrun)
+{
+ char *dev;
+ nvlist_t *schema, *config;
+ int fd;
+
+ dev = find_device(filename);
+ fd = open(dev, O_RDWR);
+ if (fd < 0)
+ err(1, "Could not open device '%s'", dev);
+
+ schema = get_schema(fd);
+ config = parse_config_file(filename, schema);
+ if (config == NULL)
+ errx(1, "Could not parse config");
+
+ config_iov(fd, dev, config, dryrun);
+
+ nvlist_destroy(config);
+ nvlist_destroy(schema);
+ free(dev);
+ close(fd);
+}
+
+static void
+delete_action(const char *dev_name, int dryrun)
+{
+ int fd, error;
+
+ fd = open_device(dev_name);
+
+ if (dryrun)
+ printf("Would attempt to delete all VF children of '%s'\n",
+ dev_name);
+ else {
+ error = ioctl(fd, IOV_DELETE);
+ if (error != 0)
+ err(1, "Failed to delete VFs");
+ }
+
+ close(fd);
+}
+
+static void
+print_default_value(const nvlist_t *parameter, const char *type)
+{
+ const uint8_t *mac;
+ size_t size;
+
+ if (strcasecmp(type, "bool") == 0)
+ printf(" (default = %s)",
+ nvlist_get_bool(parameter, DEFAULT_SCHEMA_NAME) ? "true" :
+ "false");
+ else if (strcasecmp(type, "string") == 0)
+ printf(" (default = %s)",
+ nvlist_get_string(parameter, DEFAULT_SCHEMA_NAME));
+ else if (strcasecmp(type, "uint8_t") == 0)
+ printf(" (default = %ju)",
+ (uintmax_t)nvlist_get_number(parameter,
+ DEFAULT_SCHEMA_NAME));
+ else if (strcasecmp(type, "uint16_t") == 0)
+ printf(" (default = %ju)",
+ (uintmax_t)nvlist_get_number(parameter,
+ DEFAULT_SCHEMA_NAME));
+ else if (strcasecmp(type, "uint32_t") == 0)
+ printf(" (default = %ju)",
+ (uintmax_t)nvlist_get_number(parameter,
+ DEFAULT_SCHEMA_NAME));
+ else if (strcasecmp(type, "uint64_t") == 0)
+ printf(" (default = %ju)",
+ (uintmax_t)nvlist_get_number(parameter,
+ DEFAULT_SCHEMA_NAME));
+ else if (strcasecmp(type, "unicast-mac") == 0) {
+ mac = nvlist_get_binary(parameter, DEFAULT_SCHEMA_NAME, &size);
+ printf(" (default = %02x:%02x:%02x:%02x:%02x:%02x)", mac[0],
+ mac[1], mac[2], mac[3], mac[4], mac[5]);
+ } else
+ errx(1, "Unexpected type in schema: '%s'", type);
+}
+
+static void
+print_subsystem_schema(const nvlist_t * subsystem_schema)
+{
+ const char *name, *type;
+ const nvlist_t *parameter;
+ void *it;
+ int nvtype;
+
+ it = NULL;
+ while ((name = nvlist_next(subsystem_schema, &nvtype, &it)) != NULL) {
+ parameter = nvlist_get_nvlist(subsystem_schema, name);
+ type = nvlist_get_string(parameter, TYPE_SCHEMA_NAME);
+
+ printf("\t%s : %s", name, type);
+ if (dnvlist_get_bool(parameter, REQUIRED_SCHEMA_NAME, false))
+ printf(" (required)");
+ else if (nvlist_exists(parameter, DEFAULT_SCHEMA_NAME))
+ print_default_value(parameter, type);
+ else
+ printf(" (optional)");
+ printf("\n");
+ }
+}
+
+static void
+print_schema(const char *dev_name)
+{
+ nvlist_t *schema;
+ const nvlist_t *iov_schema, *driver_schema, *pf_schema, *vf_schema;
+ int fd;
+
+ fd = open_device(dev_name);
+ schema = get_schema(fd);
+
+ pf_schema = nvlist_get_nvlist(schema, PF_CONFIG_NAME);
+ iov_schema = nvlist_get_nvlist(pf_schema, IOV_CONFIG_NAME);
+ driver_schema = nvlist_get_nvlist(pf_schema, DRIVER_CONFIG_NAME);
+ printf(
+"The following configuration parameters may be configured on the PF:\n");
+ print_subsystem_schema(iov_schema);
+ print_subsystem_schema(driver_schema);
+
+ vf_schema = nvlist_get_nvlist(schema, VF_SCHEMA_NAME);
+ iov_schema = nvlist_get_nvlist(vf_schema, IOV_CONFIG_NAME);
+ driver_schema = nvlist_get_nvlist(vf_schema, DRIVER_CONFIG_NAME);
+ printf(
+"\nThe following configuration parameters may be configured on a VF:\n");
+ print_subsystem_schema(iov_schema);
+ print_subsystem_schema(driver_schema);
+
+ nvlist_destroy(schema);
+ close(fd);
+}
Added: head/usr.sbin/iovctl/iovctl.h
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/usr.sbin/iovctl/iovctl.h Sun Mar 1 00:52:41 2015 (r279461)
@@ -0,0 +1,37 @@
+/*-
+ * Copyright (c) 2013-2015 Sandvine Inc. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef IOVCTL_H
+#define IOVCTL_H
+
+char * find_device(const char *);
+nvlist_t * parse_config_file(const char *, const nvlist_t *);
+void validate_config(nvlist_t *, const nvlist_t *, const regex_t *);
+
+#endif
+
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