1#! /usr/bin/env python 2# 3# BSD LICENSE 4# 5# Copyright(c) 2010-2014 Intel Corporation. All rights reserved. 6# All rights reserved. 7# 8# Redistribution and use in source and binary forms, with or without 9# modification, are permitted provided that the following conditions 10# are met: 11# 12# * Redistributions of source code must retain the above copyright 13# notice, this list of conditions and the following disclaimer. 14# * Redistributions in binary form must reproduce the above copyright 15# notice, this list of conditions and the following disclaimer in 16# the documentation and/or other materials provided with the 17# distribution. 18# * Neither the name of Intel Corporation nor the names of its 19# contributors may be used to endorse or promote products derived 20# from this software without specific prior written permission. 21# 22# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 23# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 24# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 25# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 26# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 27# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 28# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 29# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 30# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 31# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 32# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33# 34 35import sys 36import os 37import getopt 38import subprocess 39from os.path import exists, abspath, dirname, basename 40 41# The PCI base class for all devices 42network_class = {'Class': '02', 'Vendor': None, 'Device': None, 43 'SVendor': None, 'SDevice': None} 44encryption_class = {'Class': '10', 'Vendor': None, 'Device': None, 45 'SVendor': None, 'SDevice': None} 46intel_processor_class = {'Class': '0b', 'Vendor': '8086', 'Device': None, 47 'SVendor': None, 'SDevice': None} 48cavium_sso = {'Class': '08', 'Vendor': '177d', 'Device': 'a04b,a04d', 49 'SVendor': None, 'SDevice': None} 50cavium_fpa = {'Class': '08', 'Vendor': '177d', 'Device': 'a053', 51 'SVendor': None, 'SDevice': None} 52cavium_pkx = {'Class': '08', 'Vendor': '177d', 'Device': 'a0dd,a049', 53 'SVendor': None, 'SDevice': None} 54 55network_devices = [network_class, cavium_pkx] 56crypto_devices = [encryption_class, intel_processor_class] 57eventdev_devices = [cavium_sso] 58mempool_devices = [cavium_fpa] 59 60# global dict ethernet devices present. Dictionary indexed by PCI address. 61# Each device within this is itself a dictionary of device properties 62devices = {} 63# list of supported DPDK drivers 64dpdk_drivers = ["igb_uio", "vfio-pci", "uio_pci_generic"] 65 66# command-line arg flags 67b_flag = None 68status_flag = False 69force_flag = False 70args = [] 71 72 73def usage(): 74 '''Print usage information for the program''' 75 argv0 = basename(sys.argv[0]) 76 print(""" 77Usage: 78------ 79 80 %(argv0)s [options] DEVICE1 DEVICE2 .... 81 82where DEVICE1, DEVICE2 etc, are specified via PCI "domain:bus:slot.func" syntax 83or "bus:slot.func" syntax. For devices bound to Linux kernel drivers, they may 84also be referred to by Linux interface name e.g. eth0, eth1, em0, em1, etc. 85 86Options: 87 --help, --usage: 88 Display usage information and quit 89 90 -s, --status: 91 Print the current status of all known network, crypto, event 92 and mempool devices. 93 For each device, it displays the PCI domain, bus, slot and function, 94 along with a text description of the device. Depending upon whether the 95 device is being used by a kernel driver, the igb_uio driver, or no 96 driver, other relevant information will be displayed: 97 * the Linux interface name e.g. if=eth0 98 * the driver being used e.g. drv=igb_uio 99 * any suitable drivers not currently using that device 100 e.g. unused=igb_uio 101 NOTE: if this flag is passed along with a bind/unbind option, the 102 status display will always occur after the other operations have taken 103 place. 104 105 --status-dev: 106 Print the status of given device group. Supported device groups are: 107 "net", "crypto", "event" and "mempool" 108 109 -b driver, --bind=driver: 110 Select the driver to use or \"none\" to unbind the device 111 112 -u, --unbind: 113 Unbind a device (Equivalent to \"-b none\") 114 115 --force: 116 By default, network devices which are used by Linux - as indicated by 117 having routes in the routing table - cannot be modified. Using the 118 --force flag overrides this behavior, allowing active links to be 119 forcibly unbound. 120 WARNING: This can lead to loss of network connection and should be used 121 with caution. 122 123Examples: 124--------- 125 126To display current device status: 127 %(argv0)s --status 128 129To display current network device status: 130 %(argv0)s --status-dev net 131 132To bind eth1 from the current driver and move to use igb_uio 133 %(argv0)s --bind=igb_uio eth1 134 135To unbind 0000:01:00.0 from using any driver 136 %(argv0)s -u 0000:01:00.0 137 138To bind 0000:02:00.0 and 0000:02:00.1 to the ixgbe kernel driver 139 %(argv0)s -b ixgbe 02:00.0 02:00.1 140 141 """ % locals()) # replace items from local variables 142 143 144# This is roughly compatible with check_output function in subprocess module 145# which is only available in python 2.7. 146def check_output(args, stderr=None): 147 '''Run a command and capture its output''' 148 return subprocess.Popen(args, stdout=subprocess.PIPE, 149 stderr=stderr).communicate()[0] 150 151 152def find_module(mod): 153 '''find the .ko file for kernel module named mod. 154 Searches the $RTE_SDK/$RTE_TARGET directory, the kernel 155 modules directory and finally under the parent directory of 156 the script ''' 157 # check $RTE_SDK/$RTE_TARGET directory 158 if 'RTE_SDK' in os.environ and 'RTE_TARGET' in os.environ: 159 path = "%s/%s/kmod/%s.ko" % (os.environ['RTE_SDK'], 160 os.environ['RTE_TARGET'], mod) 161 if exists(path): 162 return path 163 164 # check using depmod 165 try: 166 with open(os.devnull, "w") as fnull: 167 path = check_output(["modinfo", "-n", mod], stderr=fnull).strip() 168 169 if path and exists(path): 170 return path 171 except: # if modinfo can't find module, it fails, so continue 172 pass 173 174 # check for a copy based off current path 175 tools_dir = dirname(abspath(sys.argv[0])) 176 if tools_dir.endswith("tools"): 177 base_dir = dirname(tools_dir) 178 find_out = check_output(["find", base_dir, "-name", mod + ".ko"]) 179 if len(find_out) > 0: # something matched 180 path = find_out.splitlines()[0] 181 if exists(path): 182 return path 183 184 185def check_modules(): 186 '''Checks that igb_uio is loaded''' 187 global dpdk_drivers 188 189 # list of supported modules 190 mods = [{"Name": driver, "Found": False} for driver in dpdk_drivers] 191 192 # first check if module is loaded 193 try: 194 # Get list of sysfs modules (both built-in and dynamically loaded) 195 sysfs_path = '/sys/module/' 196 197 # Get the list of directories in sysfs_path 198 sysfs_mods = [os.path.join(sysfs_path, o) for o 199 in os.listdir(sysfs_path) 200 if os.path.isdir(os.path.join(sysfs_path, o))] 201 202 # Extract the last element of '/sys/module/abc' in the array 203 sysfs_mods = [a.split('/')[-1] for a in sysfs_mods] 204 205 # special case for vfio_pci (module is named vfio-pci, 206 # but its .ko is named vfio_pci) 207 sysfs_mods = map(lambda a: 208 a if a != 'vfio_pci' else 'vfio-pci', sysfs_mods) 209 210 for mod in mods: 211 if mod["Name"] in sysfs_mods: 212 mod["Found"] = True 213 except: 214 pass 215 216 # check if we have at least one loaded module 217 if True not in [mod["Found"] for mod in mods] and b_flag is not None: 218 if b_flag in dpdk_drivers: 219 print("Error - no supported modules(DPDK driver) are loaded") 220 sys.exit(1) 221 else: 222 print("Warning - no supported modules(DPDK driver) are loaded") 223 224 # change DPDK driver list to only contain drivers that are loaded 225 dpdk_drivers = [mod["Name"] for mod in mods if mod["Found"]] 226 227 228def has_driver(dev_id): 229 '''return true if a device is assigned to a driver. False otherwise''' 230 return "Driver_str" in devices[dev_id] 231 232 233def get_pci_device_details(dev_id, probe_lspci): 234 '''This function gets additional details for a PCI device''' 235 device = {} 236 237 if probe_lspci: 238 extra_info = check_output(["lspci", "-vmmks", dev_id]).splitlines() 239 240 # parse lspci details 241 for line in extra_info: 242 if len(line) == 0: 243 continue 244 name, value = line.decode().split("\t", 1) 245 name = name.strip(":") + "_str" 246 device[name] = value 247 # check for a unix interface name 248 device["Interface"] = "" 249 for base, dirs, _ in os.walk("/sys/bus/pci/devices/%s/" % dev_id): 250 if "net" in dirs: 251 device["Interface"] = \ 252 ",".join(os.listdir(os.path.join(base, "net"))) 253 break 254 # check if a port is used for ssh connection 255 device["Ssh_if"] = False 256 device["Active"] = "" 257 258 return device 259 260def clear_data(): 261 '''This function clears any old data''' 262 devices = {} 263 264def get_device_details(devices_type): 265 '''This function populates the "devices" dictionary. The keys used are 266 the pci addresses (domain:bus:slot.func). The values are themselves 267 dictionaries - one for each NIC.''' 268 global devices 269 global dpdk_drivers 270 271 # first loop through and read details for all devices 272 # request machine readable format, with numeric IDs and String 273 dev = {} 274 dev_lines = check_output(["lspci", "-Dvmmnnk"]).splitlines() 275 for dev_line in dev_lines: 276 if len(dev_line) == 0: 277 if device_type_match(dev, devices_type): 278 # Replace "Driver" with "Driver_str" to have consistency of 279 # of dictionary key names 280 if "Driver" in dev.keys(): 281 dev["Driver_str"] = dev.pop("Driver") 282 # use dict to make copy of dev 283 devices[dev["Slot"]] = dict(dev) 284 # Clear previous device's data 285 dev = {} 286 else: 287 name, value = dev_line.decode().split("\t", 1) 288 value_list = value.rsplit(' ', 1) 289 if len(value_list) > 1: 290 # String stored in <name>_str 291 dev[name.rstrip(":") + '_str'] = value_list[0] 292 # Numeric IDs 293 dev[name.rstrip(":")] = value_list[len(value_list) - 1] \ 294 .rstrip("]").lstrip("[") 295 296 if devices_type == network_devices: 297 # check what is the interface if any for an ssh connection if 298 # any to this host, so we can mark it later. 299 ssh_if = [] 300 route = check_output(["ip", "-o", "route"]) 301 # filter out all lines for 169.254 routes 302 route = "\n".join(filter(lambda ln: not ln.startswith("169.254"), 303 route.decode().splitlines())) 304 rt_info = route.split() 305 for i in range(len(rt_info) - 1): 306 if rt_info[i] == "dev": 307 ssh_if.append(rt_info[i+1]) 308 309 # based on the basic info, get extended text details 310 for d in devices.keys(): 311 if not device_type_match(devices[d], devices_type): 312 continue 313 314 # get additional info and add it to existing data 315 devices[d] = devices[d].copy() 316 # No need to probe lspci 317 devices[d].update(get_pci_device_details(d, False).items()) 318 319 if devices_type == network_devices: 320 for _if in ssh_if: 321 if _if in devices[d]["Interface"].split(","): 322 devices[d]["Ssh_if"] = True 323 devices[d]["Active"] = "*Active*" 324 break 325 326 # add igb_uio to list of supporting modules if needed 327 if "Module_str" in devices[d]: 328 for driver in dpdk_drivers: 329 if driver not in devices[d]["Module_str"]: 330 devices[d]["Module_str"] = \ 331 devices[d]["Module_str"] + ",%s" % driver 332 else: 333 devices[d]["Module_str"] = ",".join(dpdk_drivers) 334 335 # make sure the driver and module strings do not have any duplicates 336 if has_driver(d): 337 modules = devices[d]["Module_str"].split(",") 338 if devices[d]["Driver_str"] in modules: 339 modules.remove(devices[d]["Driver_str"]) 340 devices[d]["Module_str"] = ",".join(modules) 341 342 343def device_type_match(dev, devices_type): 344 for i in range(len(devices_type)): 345 param_count = len( 346 [x for x in devices_type[i].values() if x is not None]) 347 match_count = 0 348 if dev["Class"][0:2] == devices_type[i]["Class"]: 349 match_count = match_count + 1 350 for key in devices_type[i].keys(): 351 if key != 'Class' and devices_type[i][key]: 352 value_list = devices_type[i][key].split(',') 353 for value in value_list: 354 if value.strip(' ') == dev[key]: 355 match_count = match_count + 1 356 # count must be the number of non None parameters to match 357 if match_count == param_count: 358 return True 359 return False 360 361def dev_id_from_dev_name(dev_name): 362 '''Take a device "name" - a string passed in by user to identify a NIC 363 device, and determine the device id - i.e. the domain:bus:slot.func - for 364 it, which can then be used to index into the devices array''' 365 366 # check if it's already a suitable index 367 if dev_name in devices: 368 return dev_name 369 # check if it's an index just missing the domain part 370 elif "0000:" + dev_name in devices: 371 return "0000:" + dev_name 372 else: 373 # check if it's an interface name, e.g. eth1 374 for d in devices.keys(): 375 if dev_name in devices[d]["Interface"].split(","): 376 return devices[d]["Slot"] 377 # if nothing else matches - error 378 print("Unknown device: %s. " 379 "Please specify device in \"bus:slot.func\" format" % dev_name) 380 sys.exit(1) 381 382 383def unbind_one(dev_id, force): 384 '''Unbind the device identified by "dev_id" from its current driver''' 385 dev = devices[dev_id] 386 if not has_driver(dev_id): 387 print("%s %s %s is not currently managed by any driver\n" % 388 (dev["Slot"], dev["Device_str"], dev["Interface"])) 389 return 390 391 # prevent us disconnecting ourselves 392 if dev["Ssh_if"] and not force: 393 print("Routing table indicates that interface %s is active. " 394 "Skipping unbind" % (dev_id)) 395 return 396 397 # write to /sys to unbind 398 filename = "/sys/bus/pci/drivers/%s/unbind" % dev["Driver_str"] 399 try: 400 f = open(filename, "a") 401 except: 402 print("Error: unbind failed for %s - Cannot open %s" 403 % (dev_id, filename)) 404 sys.exit(1) 405 f.write(dev_id) 406 f.close() 407 408 409def bind_one(dev_id, driver, force): 410 '''Bind the device given by "dev_id" to the driver "driver". If the device 411 is already bound to a different driver, it will be unbound first''' 412 dev = devices[dev_id] 413 saved_driver = None # used to rollback any unbind in case of failure 414 415 # prevent disconnection of our ssh session 416 if dev["Ssh_if"] and not force: 417 print("Routing table indicates that interface %s is active. " 418 "Not modifying" % (dev_id)) 419 return 420 421 # unbind any existing drivers we don't want 422 if has_driver(dev_id): 423 if dev["Driver_str"] == driver: 424 print("%s already bound to driver %s, skipping\n" 425 % (dev_id, driver)) 426 return 427 else: 428 saved_driver = dev["Driver_str"] 429 unbind_one(dev_id, force) 430 dev["Driver_str"] = "" # clear driver string 431 432 # For kernels >= 3.15 driver_override can be used to specify the driver 433 # for a device rather than relying on the driver to provide a positive 434 # match of the device. The existing process of looking up 435 # the vendor and device ID, adding them to the driver new_id, 436 # will erroneously bind other devices too which has the additional burden 437 # of unbinding those devices 438 if driver in dpdk_drivers: 439 filename = "/sys/bus/pci/devices/%s/driver_override" % dev_id 440 if os.path.exists(filename): 441 try: 442 f = open(filename, "w") 443 except: 444 print("Error: bind failed for %s - Cannot open %s" 445 % (dev_id, filename)) 446 return 447 try: 448 f.write("%s" % driver) 449 f.close() 450 except: 451 print("Error: bind failed for %s - Cannot write driver %s to " 452 "PCI ID " % (dev_id, driver)) 453 return 454 # For kernels < 3.15 use new_id to add PCI id's to the driver 455 else: 456 filename = "/sys/bus/pci/drivers/%s/new_id" % driver 457 try: 458 f = open(filename, "w") 459 except: 460 print("Error: bind failed for %s - Cannot open %s" 461 % (dev_id, filename)) 462 return 463 try: 464 # Convert Device and Vendor Id to int to write to new_id 465 f.write("%04x %04x" % (int(dev["Vendor"],16), 466 int(dev["Device"], 16))) 467 f.close() 468 except: 469 print("Error: bind failed for %s - Cannot write new PCI ID to " 470 "driver %s" % (dev_id, driver)) 471 return 472 473 # do the bind by writing to /sys 474 filename = "/sys/bus/pci/drivers/%s/bind" % driver 475 try: 476 f = open(filename, "a") 477 except: 478 print("Error: bind failed for %s - Cannot open %s" 479 % (dev_id, filename)) 480 if saved_driver is not None: # restore any previous driver 481 bind_one(dev_id, saved_driver, force) 482 return 483 try: 484 f.write(dev_id) 485 f.close() 486 except: 487 # for some reason, closing dev_id after adding a new PCI ID to new_id 488 # results in IOError. however, if the device was successfully bound, 489 # we don't care for any errors and can safely ignore IOError 490 tmp = get_pci_device_details(dev_id, True) 491 if "Driver_str" in tmp and tmp["Driver_str"] == driver: 492 return 493 print("Error: bind failed for %s - Cannot bind to driver %s" 494 % (dev_id, driver)) 495 if saved_driver is not None: # restore any previous driver 496 bind_one(dev_id, saved_driver, force) 497 return 498 499 # For kernels > 3.15 driver_override is used to bind a device to a driver. 500 # Before unbinding it, overwrite driver_override with empty string so that 501 # the device can be bound to any other driver 502 filename = "/sys/bus/pci/devices/%s/driver_override" % dev_id 503 if os.path.exists(filename): 504 try: 505 f = open(filename, "w") 506 except: 507 print("Error: unbind failed for %s - Cannot open %s" 508 % (dev_id, filename)) 509 sys.exit(1) 510 try: 511 f.write("\00") 512 f.close() 513 except: 514 print("Error: unbind failed for %s - Cannot open %s" 515 % (dev_id, filename)) 516 sys.exit(1) 517 518 519def unbind_all(dev_list, force=False): 520 """Unbind method, takes a list of device locations""" 521 dev_list = map(dev_id_from_dev_name, dev_list) 522 for d in dev_list: 523 unbind_one(d, force) 524 525 526def bind_all(dev_list, driver, force=False): 527 """Bind method, takes a list of device locations""" 528 global devices 529 530 dev_list = map(dev_id_from_dev_name, dev_list) 531 532 for d in dev_list: 533 bind_one(d, driver, force) 534 535 # For kenels < 3.15 when binding devices to a generic driver 536 # (i.e. one that doesn't have a PCI ID table) using new_id, some devices 537 # that are not bound to any other driver could be bound even if no one has 538 # asked them to. hence, we check the list of drivers again, and see if 539 # some of the previously-unbound devices were erroneously bound. 540 if not os.path.exists("/sys/bus/pci/devices/%s/driver_override" % d): 541 for d in devices.keys(): 542 # skip devices that were already bound or that we know should be bound 543 if "Driver_str" in devices[d] or d in dev_list: 544 continue 545 546 # update information about this device 547 devices[d] = dict(devices[d].items() + 548 get_pci_device_details(d, True).items()) 549 550 # check if updated information indicates that the device was bound 551 if "Driver_str" in devices[d]: 552 unbind_one(d, force) 553 554 555def display_devices(title, dev_list, extra_params=None): 556 '''Displays to the user the details of a list of devices given in 557 "dev_list". The "extra_params" parameter, if given, should contain a string 558 with %()s fields in it for replacement by the named fields in each 559 device's dictionary.''' 560 strings = [] # this holds the strings to print. We sort before printing 561 print("\n%s" % title) 562 print("="*len(title)) 563 if len(dev_list) == 0: 564 strings.append("<none>") 565 else: 566 for dev in dev_list: 567 if extra_params is not None: 568 strings.append("%s '%s %s' %s" % (dev["Slot"], 569 dev["Device_str"], 570 dev["Device"], 571 extra_params % dev)) 572 else: 573 strings.append("%s '%s'" % (dev["Slot"], dev["Device_str"])) 574 # sort before printing, so that the entries appear in PCI order 575 strings.sort() 576 print("\n".join(strings)) # print one per line 577 578def show_device_status(devices_type, device_name): 579 global dpdk_drivers 580 kernel_drv = [] 581 dpdk_drv = [] 582 no_drv = [] 583 584 # split our list of network devices into the three categories above 585 for d in devices.keys(): 586 if device_type_match(devices[d], devices_type): 587 if not has_driver(d): 588 no_drv.append(devices[d]) 589 continue 590 if devices[d]["Driver_str"] in dpdk_drivers: 591 dpdk_drv.append(devices[d]) 592 else: 593 kernel_drv.append(devices[d]) 594 595 # print each category separately, so we can clearly see what's used by DPDK 596 display_devices("%s devices using DPDK-compatible driver" % device_name, 597 dpdk_drv, "drv=%(Driver_str)s unused=%(Module_str)s") 598 display_devices("%s devices using kernel driver" % device_name, kernel_drv, 599 "if=%(Interface)s drv=%(Driver_str)s " 600 "unused=%(Module_str)s %(Active)s") 601 display_devices("Other %s devices" % device_name, no_drv, 602 "unused=%(Module_str)s") 603 604def show_status(): 605 '''Function called when the script is passed the "--status" option. 606 Displays to the user what devices are bound to the igb_uio driver, the 607 kernel driver or to no driver''' 608 609 if status_dev == "net" or status_dev == "all": 610 show_device_status(network_devices, "Network") 611 612 if status_dev == "crypto" or status_dev == "all": 613 show_device_status(crypto_devices, "Crypto") 614 615 if status_dev == "event" or status_dev == "all": 616 show_device_status(eventdev_devices, "Eventdev") 617 618 if status_dev == "mempool" or status_dev == "all": 619 show_device_status(mempool_devices, "Mempool") 620 621def parse_args(): 622 '''Parses the command-line arguments given by the user and takes the 623 appropriate action for each''' 624 global b_flag 625 global status_flag 626 global status_dev 627 global force_flag 628 global args 629 if len(sys.argv) <= 1: 630 usage() 631 sys.exit(0) 632 633 try: 634 opts, args = getopt.getopt(sys.argv[1:], "b:us", 635 ["help", "usage", "status", "status-dev=", 636 "force", "bind=", "unbind", ]) 637 except getopt.GetoptError as error: 638 print(str(error)) 639 print("Run '%s --usage' for further information" % sys.argv[0]) 640 sys.exit(1) 641 642 for opt, arg in opts: 643 if opt == "--help" or opt == "--usage": 644 usage() 645 sys.exit(0) 646 if opt == "--status-dev": 647 status_flag = True 648 status_dev = arg 649 if opt == "--status" or opt == "-s": 650 status_flag = True 651 status_dev = "all" 652 if opt == "--force": 653 force_flag = True 654 if opt == "-b" or opt == "-u" or opt == "--bind" or opt == "--unbind": 655 if b_flag is not None: 656 print("Error - Only one bind or unbind may be specified\n") 657 sys.exit(1) 658 if opt == "-u" or opt == "--unbind": 659 b_flag = "none" 660 else: 661 b_flag = arg 662 663 664def do_arg_actions(): 665 '''do the actual action requested by the user''' 666 global b_flag 667 global status_flag 668 global force_flag 669 global args 670 671 if b_flag is None and not status_flag: 672 print("Error: No action specified for devices." 673 "Please give a -b or -u option") 674 print("Run '%s --usage' for further information" % sys.argv[0]) 675 sys.exit(1) 676 677 if b_flag is not None and len(args) == 0: 678 print("Error: No devices specified.") 679 print("Run '%s --usage' for further information" % sys.argv[0]) 680 sys.exit(1) 681 682 if b_flag == "none" or b_flag == "None": 683 unbind_all(args, force_flag) 684 elif b_flag is not None: 685 bind_all(args, b_flag, force_flag) 686 if status_flag: 687 if b_flag is not None: 688 clear_data() 689 # refresh if we have changed anything 690 get_device_details(network_devices) 691 get_device_details(crypto_devices) 692 get_device_details(eventdev_devices) 693 get_device_details(mempool_devices) 694 show_status() 695 696 697def main(): 698 '''program main function''' 699 parse_args() 700 check_modules() 701 clear_data() 702 get_device_details(network_devices) 703 get_device_details(crypto_devices) 704 get_device_details(eventdev_devices) 705 get_device_details(mempool_devices) 706 do_arg_actions() 707 708if __name__ == "__main__": 709 main() 710