1#! /usr/bin/env python 2# SPDX-License-Identifier: BSD-3-Clause 3# Copyright(c) 2010-2014 Intel Corporation 4# 5 6import sys 7import os 8import getopt 9import subprocess 10from os.path import exists, abspath, dirname, basename 11 12# The PCI base class for all devices 13network_class = {'Class': '02', 'Vendor': None, 'Device': None, 14 'SVendor': None, 'SDevice': None} 15ifpga_class = {'Class': '12', 'Vendor': '8086', 'Device': '0b30', 16 'SVendor': None, 'SDevice': None} 17encryption_class = {'Class': '10', 'Vendor': None, 'Device': None, 18 'SVendor': None, 'SDevice': None} 19intel_processor_class = {'Class': '0b', 'Vendor': '8086', 'Device': None, 20 'SVendor': None, 'SDevice': None} 21cavium_sso = {'Class': '08', 'Vendor': '177d', 'Device': 'a04b,a04d', 22 'SVendor': None, 'SDevice': None} 23cavium_fpa = {'Class': '08', 'Vendor': '177d', 'Device': 'a053', 24 'SVendor': None, 'SDevice': None} 25cavium_pkx = {'Class': '08', 'Vendor': '177d', 'Device': 'a0dd,a049', 26 'SVendor': None, 'SDevice': None} 27cavium_tim = {'Class': '08', 'Vendor': '177d', 'Device': 'a051', 28 'SVendor': None, 'SDevice': None} 29cavium_zip = {'Class': '12', 'Vendor': '177d', 'Device': 'a037', 30 'SVendor': None, 'SDevice': None} 31avp_vnic = {'Class': '05', 'Vendor': '1af4', 'Device': '1110', 32 'SVendor': None, 'SDevice': None} 33 34octeontx2_sso = {'Class': '08', 'Vendor': '177d', 'Device': 'a0f9,a0fa', 35 'SVendor': None, 'SDevice': None} 36octeontx2_npa = {'Class': '08', 'Vendor': '177d', 'Device': 'a0fb,a0fc', 37 'SVendor': None, 'SDevice': None} 38 39network_devices = [network_class, cavium_pkx, avp_vnic, ifpga_class] 40crypto_devices = [encryption_class, intel_processor_class] 41eventdev_devices = [cavium_sso, cavium_tim, octeontx2_sso] 42mempool_devices = [cavium_fpa, octeontx2_npa] 43compress_devices = [cavium_zip] 44 45# global dict ethernet devices present. Dictionary indexed by PCI address. 46# Each device within this is itself a dictionary of device properties 47devices = {} 48# list of supported DPDK drivers 49dpdk_drivers = ["igb_uio", "vfio-pci", "uio_pci_generic"] 50 51# command-line arg flags 52b_flag = None 53status_flag = False 54force_flag = False 55args = [] 56 57 58def usage(): 59 '''Print usage information for the program''' 60 argv0 = basename(sys.argv[0]) 61 print(""" 62Usage: 63------ 64 65 %(argv0)s [options] DEVICE1 DEVICE2 .... 66 67where DEVICE1, DEVICE2 etc, are specified via PCI "domain:bus:slot.func" syntax 68or "bus:slot.func" syntax. For devices bound to Linux kernel drivers, they may 69also be referred to by Linux interface name e.g. eth0, eth1, em0, em1, etc. 70 71Options: 72 --help, --usage: 73 Display usage information and quit 74 75 -s, --status: 76 Print the current status of all known network, crypto, event 77 and mempool devices. 78 For each device, it displays the PCI domain, bus, slot and function, 79 along with a text description of the device. Depending upon whether the 80 device is being used by a kernel driver, the igb_uio driver, or no 81 driver, other relevant information will be displayed: 82 * the Linux interface name e.g. if=eth0 83 * the driver being used e.g. drv=igb_uio 84 * any suitable drivers not currently using that device 85 e.g. unused=igb_uio 86 NOTE: if this flag is passed along with a bind/unbind option, the 87 status display will always occur after the other operations have taken 88 place. 89 90 --status-dev: 91 Print the status of given device group. Supported device groups are: 92 "net", "crypto", "event", "mempool" and "compress" 93 94 -b driver, --bind=driver: 95 Select the driver to use or \"none\" to unbind the device 96 97 -u, --unbind: 98 Unbind a device (Equivalent to \"-b none\") 99 100 --force: 101 By default, network devices which are used by Linux - as indicated by 102 having routes in the routing table - cannot be modified. Using the 103 --force flag overrides this behavior, allowing active links to be 104 forcibly unbound. 105 WARNING: This can lead to loss of network connection and should be used 106 with caution. 107 108Examples: 109--------- 110 111To display current device status: 112 %(argv0)s --status 113 114To display current network device status: 115 %(argv0)s --status-dev net 116 117To bind eth1 from the current driver and move to use igb_uio 118 %(argv0)s --bind=igb_uio eth1 119 120To unbind 0000:01:00.0 from using any driver 121 %(argv0)s -u 0000:01:00.0 122 123To bind 0000:02:00.0 and 0000:02:00.1 to the ixgbe kernel driver 124 %(argv0)s -b ixgbe 02:00.0 02:00.1 125 126 """ % locals()) # replace items from local variables 127 128 129# This is roughly compatible with check_output function in subprocess module 130# which is only available in python 2.7. 131def check_output(args, stderr=None): 132 '''Run a command and capture its output''' 133 return subprocess.Popen(args, stdout=subprocess.PIPE, 134 stderr=stderr).communicate()[0] 135 136 137def check_modules(): 138 '''Checks that igb_uio is loaded''' 139 global dpdk_drivers 140 141 # list of supported modules 142 mods = [{"Name": driver, "Found": False} for driver in dpdk_drivers] 143 144 # first check if module is loaded 145 try: 146 # Get list of sysfs modules (both built-in and dynamically loaded) 147 sysfs_path = '/sys/module/' 148 149 # Get the list of directories in sysfs_path 150 sysfs_mods = [os.path.join(sysfs_path, o) for o 151 in os.listdir(sysfs_path) 152 if os.path.isdir(os.path.join(sysfs_path, o))] 153 154 # Extract the last element of '/sys/module/abc' in the array 155 sysfs_mods = [a.split('/')[-1] for a in sysfs_mods] 156 157 # special case for vfio_pci (module is named vfio-pci, 158 # but its .ko is named vfio_pci) 159 sysfs_mods = [a if a != 'vfio_pci' else 'vfio-pci' for a in sysfs_mods] 160 161 for mod in mods: 162 if mod["Name"] in sysfs_mods: 163 mod["Found"] = True 164 except: 165 pass 166 167 # check if we have at least one loaded module 168 if True not in [mod["Found"] for mod in mods] and b_flag is not None: 169 if b_flag in dpdk_drivers: 170 print("Error - no supported modules(DPDK driver) are loaded") 171 sys.exit(1) 172 else: 173 print("Warning - no supported modules(DPDK driver) are loaded") 174 175 # change DPDK driver list to only contain drivers that are loaded 176 dpdk_drivers = [mod["Name"] for mod in mods if mod["Found"]] 177 178 179def has_driver(dev_id): 180 '''return true if a device is assigned to a driver. False otherwise''' 181 return "Driver_str" in devices[dev_id] 182 183 184def get_pci_device_details(dev_id, probe_lspci): 185 '''This function gets additional details for a PCI device''' 186 device = {} 187 188 if probe_lspci: 189 extra_info = check_output(["lspci", "-vmmks", dev_id]).splitlines() 190 191 # parse lspci details 192 for line in extra_info: 193 if len(line) == 0: 194 continue 195 name, value = line.decode().split("\t", 1) 196 name = name.strip(":") + "_str" 197 device[name] = value 198 # check for a unix interface name 199 device["Interface"] = "" 200 for base, dirs, _ in os.walk("/sys/bus/pci/devices/%s/" % dev_id): 201 if "net" in dirs: 202 device["Interface"] = \ 203 ",".join(os.listdir(os.path.join(base, "net"))) 204 break 205 # check if a port is used for ssh connection 206 device["Ssh_if"] = False 207 device["Active"] = "" 208 209 return device 210 211def clear_data(): 212 '''This function clears any old data''' 213 devices = {} 214 215def get_device_details(devices_type): 216 '''This function populates the "devices" dictionary. The keys used are 217 the pci addresses (domain:bus:slot.func). The values are themselves 218 dictionaries - one for each NIC.''' 219 global devices 220 global dpdk_drivers 221 222 # first loop through and read details for all devices 223 # request machine readable format, with numeric IDs and String 224 dev = {} 225 dev_lines = check_output(["lspci", "-Dvmmnnk"]).splitlines() 226 for dev_line in dev_lines: 227 if len(dev_line) == 0: 228 if device_type_match(dev, devices_type): 229 # Replace "Driver" with "Driver_str" to have consistency of 230 # of dictionary key names 231 if "Driver" in dev.keys(): 232 dev["Driver_str"] = dev.pop("Driver") 233 if "Module" in dev.keys(): 234 dev["Module_str"] = dev.pop("Module") 235 # use dict to make copy of dev 236 devices[dev["Slot"]] = dict(dev) 237 # Clear previous device's data 238 dev = {} 239 else: 240 name, value = dev_line.decode().split("\t", 1) 241 value_list = value.rsplit(' ', 1) 242 if len(value_list) > 1: 243 # String stored in <name>_str 244 dev[name.rstrip(":") + '_str'] = value_list[0] 245 # Numeric IDs 246 dev[name.rstrip(":")] = value_list[len(value_list) - 1] \ 247 .rstrip("]").lstrip("[") 248 249 if devices_type == network_devices: 250 # check what is the interface if any for an ssh connection if 251 # any to this host, so we can mark it later. 252 ssh_if = [] 253 route = check_output(["ip", "-o", "route"]) 254 # filter out all lines for 169.254 routes 255 route = "\n".join(filter(lambda ln: not ln.startswith("169.254"), 256 route.decode().splitlines())) 257 rt_info = route.split() 258 for i in range(len(rt_info) - 1): 259 if rt_info[i] == "dev": 260 ssh_if.append(rt_info[i+1]) 261 262 # based on the basic info, get extended text details 263 for d in devices.keys(): 264 if not device_type_match(devices[d], devices_type): 265 continue 266 267 # get additional info and add it to existing data 268 devices[d] = devices[d].copy() 269 # No need to probe lspci 270 devices[d].update(get_pci_device_details(d, False).items()) 271 272 if devices_type == network_devices: 273 for _if in ssh_if: 274 if _if in devices[d]["Interface"].split(","): 275 devices[d]["Ssh_if"] = True 276 devices[d]["Active"] = "*Active*" 277 break 278 279 # add igb_uio to list of supporting modules if needed 280 if "Module_str" in devices[d]: 281 for driver in dpdk_drivers: 282 if driver not in devices[d]["Module_str"]: 283 devices[d]["Module_str"] = \ 284 devices[d]["Module_str"] + ",%s" % driver 285 else: 286 devices[d]["Module_str"] = ",".join(dpdk_drivers) 287 288 # make sure the driver and module strings do not have any duplicates 289 if has_driver(d): 290 modules = devices[d]["Module_str"].split(",") 291 if devices[d]["Driver_str"] in modules: 292 modules.remove(devices[d]["Driver_str"]) 293 devices[d]["Module_str"] = ",".join(modules) 294 295 296def device_type_match(dev, devices_type): 297 for i in range(len(devices_type)): 298 param_count = len( 299 [x for x in devices_type[i].values() if x is not None]) 300 match_count = 0 301 if dev["Class"][0:2] == devices_type[i]["Class"]: 302 match_count = match_count + 1 303 for key in devices_type[i].keys(): 304 if key != 'Class' and devices_type[i][key]: 305 value_list = devices_type[i][key].split(',') 306 for value in value_list: 307 if value.strip(' ') == dev[key]: 308 match_count = match_count + 1 309 # count must be the number of non None parameters to match 310 if match_count == param_count: 311 return True 312 return False 313 314def dev_id_from_dev_name(dev_name): 315 '''Take a device "name" - a string passed in by user to identify a NIC 316 device, and determine the device id - i.e. the domain:bus:slot.func - for 317 it, which can then be used to index into the devices array''' 318 319 # check if it's already a suitable index 320 if dev_name in devices: 321 return dev_name 322 # check if it's an index just missing the domain part 323 elif "0000:" + dev_name in devices: 324 return "0000:" + dev_name 325 else: 326 # check if it's an interface name, e.g. eth1 327 for d in devices.keys(): 328 if dev_name in devices[d]["Interface"].split(","): 329 return devices[d]["Slot"] 330 # if nothing else matches - error 331 print("Unknown device: %s. " 332 "Please specify device in \"bus:slot.func\" format" % dev_name) 333 sys.exit(1) 334 335 336def unbind_one(dev_id, force): 337 '''Unbind the device identified by "dev_id" from its current driver''' 338 dev = devices[dev_id] 339 if not has_driver(dev_id): 340 print("%s %s %s is not currently managed by any driver\n" % 341 (dev["Slot"], dev["Device_str"], dev["Interface"])) 342 return 343 344 # prevent us disconnecting ourselves 345 if dev["Ssh_if"] and not force: 346 print("Routing table indicates that interface %s is active. " 347 "Skipping unbind" % (dev_id)) 348 return 349 350 # write to /sys to unbind 351 filename = "/sys/bus/pci/drivers/%s/unbind" % dev["Driver_str"] 352 try: 353 f = open(filename, "a") 354 except: 355 print("Error: unbind failed for %s - Cannot open %s" 356 % (dev_id, filename)) 357 sys.exit(1) 358 f.write(dev_id) 359 f.close() 360 361 362def bind_one(dev_id, driver, force): 363 '''Bind the device given by "dev_id" to the driver "driver". If the device 364 is already bound to a different driver, it will be unbound first''' 365 dev = devices[dev_id] 366 saved_driver = None # used to rollback any unbind in case of failure 367 368 # prevent disconnection of our ssh session 369 if dev["Ssh_if"] and not force: 370 print("Routing table indicates that interface %s is active. " 371 "Not modifying" % (dev_id)) 372 return 373 374 # unbind any existing drivers we don't want 375 if has_driver(dev_id): 376 if dev["Driver_str"] == driver: 377 print("%s already bound to driver %s, skipping\n" 378 % (dev_id, driver)) 379 return 380 else: 381 saved_driver = dev["Driver_str"] 382 unbind_one(dev_id, force) 383 dev["Driver_str"] = "" # clear driver string 384 385 # For kernels >= 3.15 driver_override can be used to specify the driver 386 # for a device rather than relying on the driver to provide a positive 387 # match of the device. The existing process of looking up 388 # the vendor and device ID, adding them to the driver new_id, 389 # will erroneously bind other devices too which has the additional burden 390 # of unbinding those devices 391 if driver in dpdk_drivers: 392 filename = "/sys/bus/pci/devices/%s/driver_override" % dev_id 393 if os.path.exists(filename): 394 try: 395 f = open(filename, "w") 396 except: 397 print("Error: bind failed for %s - Cannot open %s" 398 % (dev_id, filename)) 399 return 400 try: 401 f.write("%s" % driver) 402 f.close() 403 except: 404 print("Error: bind failed for %s - Cannot write driver %s to " 405 "PCI ID " % (dev_id, driver)) 406 return 407 # For kernels < 3.15 use new_id to add PCI id's to the driver 408 else: 409 filename = "/sys/bus/pci/drivers/%s/new_id" % driver 410 try: 411 f = open(filename, "w") 412 except: 413 print("Error: bind failed for %s - Cannot open %s" 414 % (dev_id, filename)) 415 return 416 try: 417 # Convert Device and Vendor Id to int to write to new_id 418 f.write("%04x %04x" % (int(dev["Vendor"],16), 419 int(dev["Device"], 16))) 420 f.close() 421 except: 422 print("Error: bind failed for %s - Cannot write new PCI ID to " 423 "driver %s" % (dev_id, driver)) 424 return 425 426 # do the bind by writing to /sys 427 filename = "/sys/bus/pci/drivers/%s/bind" % driver 428 try: 429 f = open(filename, "a") 430 except: 431 print("Error: bind failed for %s - Cannot open %s" 432 % (dev_id, filename)) 433 if saved_driver is not None: # restore any previous driver 434 bind_one(dev_id, saved_driver, force) 435 return 436 try: 437 f.write(dev_id) 438 f.close() 439 except: 440 # for some reason, closing dev_id after adding a new PCI ID to new_id 441 # results in IOError. however, if the device was successfully bound, 442 # we don't care for any errors and can safely ignore IOError 443 tmp = get_pci_device_details(dev_id, True) 444 if "Driver_str" in tmp and tmp["Driver_str"] == driver: 445 return 446 print("Error: bind failed for %s - Cannot bind to driver %s" 447 % (dev_id, driver)) 448 if saved_driver is not None: # restore any previous driver 449 bind_one(dev_id, saved_driver, force) 450 return 451 452 # For kernels > 3.15 driver_override is used to bind a device to a driver. 453 # Before unbinding it, overwrite driver_override with empty string so that 454 # the device can be bound to any other driver 455 filename = "/sys/bus/pci/devices/%s/driver_override" % dev_id 456 if os.path.exists(filename): 457 try: 458 f = open(filename, "w") 459 except: 460 print("Error: unbind failed for %s - Cannot open %s" 461 % (dev_id, filename)) 462 sys.exit(1) 463 try: 464 f.write("\00") 465 f.close() 466 except: 467 print("Error: unbind failed for %s - Cannot open %s" 468 % (dev_id, filename)) 469 sys.exit(1) 470 471 472def unbind_all(dev_list, force=False): 473 """Unbind method, takes a list of device locations""" 474 475 if dev_list[0] == "dpdk": 476 for d in devices.keys(): 477 if "Driver_str" in devices[d]: 478 if devices[d]["Driver_str"] in dpdk_drivers: 479 unbind_one(devices[d]["Slot"], force) 480 return 481 482 dev_list = map(dev_id_from_dev_name, dev_list) 483 for d in dev_list: 484 unbind_one(d, force) 485 486 487def bind_all(dev_list, driver, force=False): 488 """Bind method, takes a list of device locations""" 489 global devices 490 491 dev_list = map(dev_id_from_dev_name, dev_list) 492 493 for d in dev_list: 494 bind_one(d, driver, force) 495 496 # For kernels < 3.15 when binding devices to a generic driver 497 # (i.e. one that doesn't have a PCI ID table) using new_id, some devices 498 # that are not bound to any other driver could be bound even if no one has 499 # asked them to. hence, we check the list of drivers again, and see if 500 # some of the previously-unbound devices were erroneously bound. 501 if not os.path.exists("/sys/bus/pci/devices/%s/driver_override" % d): 502 for d in devices.keys(): 503 # skip devices that were already bound or that we know should be bound 504 if "Driver_str" in devices[d] or d in dev_list: 505 continue 506 507 # update information about this device 508 devices[d] = dict(devices[d].items() + 509 get_pci_device_details(d, True).items()) 510 511 # check if updated information indicates that the device was bound 512 if "Driver_str" in devices[d]: 513 unbind_one(d, force) 514 515 516def display_devices(title, dev_list, extra_params=None): 517 '''Displays to the user the details of a list of devices given in 518 "dev_list". The "extra_params" parameter, if given, should contain a string 519 with %()s fields in it for replacement by the named fields in each 520 device's dictionary.''' 521 strings = [] # this holds the strings to print. We sort before printing 522 print("\n%s" % title) 523 print("="*len(title)) 524 if len(dev_list) == 0: 525 strings.append("<none>") 526 else: 527 for dev in dev_list: 528 if extra_params is not None: 529 strings.append("%s '%s %s' %s" % (dev["Slot"], 530 dev["Device_str"], 531 dev["Device"], 532 extra_params % dev)) 533 else: 534 strings.append("%s '%s'" % (dev["Slot"], dev["Device_str"])) 535 # sort before printing, so that the entries appear in PCI order 536 strings.sort() 537 print("\n".join(strings)) # print one per line 538 539def show_device_status(devices_type, device_name): 540 global dpdk_drivers 541 kernel_drv = [] 542 dpdk_drv = [] 543 no_drv = [] 544 545 # split our list of network devices into the three categories above 546 for d in devices.keys(): 547 if device_type_match(devices[d], devices_type): 548 if not has_driver(d): 549 no_drv.append(devices[d]) 550 continue 551 if devices[d]["Driver_str"] in dpdk_drivers: 552 dpdk_drv.append(devices[d]) 553 else: 554 kernel_drv.append(devices[d]) 555 556 n_devs = len(dpdk_drv) + len(kernel_drv) + len(no_drv) 557 558 # don't bother displaying anything if there are no devices 559 if n_devs == 0: 560 msg = "No '%s' devices detected" % device_name 561 print("") 562 print(msg) 563 print("".join('=' * len(msg))) 564 return 565 566 # print each category separately, so we can clearly see what's used by DPDK 567 if len(dpdk_drv) != 0: 568 display_devices("%s devices using DPDK-compatible driver" % device_name, 569 dpdk_drv, "drv=%(Driver_str)s unused=%(Module_str)s") 570 if len(kernel_drv) != 0: 571 display_devices("%s devices using kernel driver" % device_name, kernel_drv, 572 "if=%(Interface)s drv=%(Driver_str)s " 573 "unused=%(Module_str)s %(Active)s") 574 if len(no_drv) != 0: 575 display_devices("Other %s devices" % device_name, no_drv, 576 "unused=%(Module_str)s") 577 578def show_status(): 579 '''Function called when the script is passed the "--status" option. 580 Displays to the user what devices are bound to the igb_uio driver, the 581 kernel driver or to no driver''' 582 583 if status_dev == "net" or status_dev == "all": 584 show_device_status(network_devices, "Network") 585 586 if status_dev == "crypto" or status_dev == "all": 587 show_device_status(crypto_devices, "Crypto") 588 589 if status_dev == "event" or status_dev == "all": 590 show_device_status(eventdev_devices, "Eventdev") 591 592 if status_dev == "mempool" or status_dev == "all": 593 show_device_status(mempool_devices, "Mempool") 594 595 if status_dev == "compress" or status_dev == "all": 596 show_device_status(compress_devices , "Compress") 597 598 599def parse_args(): 600 '''Parses the command-line arguments given by the user and takes the 601 appropriate action for each''' 602 global b_flag 603 global status_flag 604 global status_dev 605 global force_flag 606 global args 607 if len(sys.argv) <= 1: 608 usage() 609 sys.exit(0) 610 611 try: 612 opts, args = getopt.getopt(sys.argv[1:], "b:us", 613 ["help", "usage", "status", "status-dev=", 614 "force", "bind=", "unbind", ]) 615 except getopt.GetoptError as error: 616 print(str(error)) 617 print("Run '%s --usage' for further information" % sys.argv[0]) 618 sys.exit(1) 619 620 for opt, arg in opts: 621 if opt == "--help" or opt == "--usage": 622 usage() 623 sys.exit(0) 624 if opt == "--status-dev": 625 status_flag = True 626 status_dev = arg 627 if opt == "--status" or opt == "-s": 628 status_flag = True 629 status_dev = "all" 630 if opt == "--force": 631 force_flag = True 632 if opt == "-b" or opt == "-u" or opt == "--bind" or opt == "--unbind": 633 if b_flag is not None: 634 print("Error - Only one bind or unbind may be specified\n") 635 sys.exit(1) 636 if opt == "-u" or opt == "--unbind": 637 b_flag = "none" 638 else: 639 b_flag = arg 640 641 642def do_arg_actions(): 643 '''do the actual action requested by the user''' 644 global b_flag 645 global status_flag 646 global force_flag 647 global args 648 649 if b_flag is None and not status_flag: 650 print("Error: No action specified for devices." 651 "Please give a -b or -u option") 652 print("Run '%s --usage' for further information" % sys.argv[0]) 653 sys.exit(1) 654 655 if b_flag is not None and len(args) == 0: 656 print("Error: No devices specified.") 657 print("Run '%s --usage' for further information" % sys.argv[0]) 658 sys.exit(1) 659 660 if b_flag == "none" or b_flag == "None": 661 unbind_all(args, force_flag) 662 elif b_flag is not None: 663 bind_all(args, b_flag, force_flag) 664 if status_flag: 665 if b_flag is not None: 666 clear_data() 667 # refresh if we have changed anything 668 get_device_details(network_devices) 669 get_device_details(crypto_devices) 670 get_device_details(eventdev_devices) 671 get_device_details(mempool_devices) 672 get_device_details(compress_devices) 673 show_status() 674 675 676def main(): 677 '''program main function''' 678 # check if lspci is installed, suppress any output 679 with open(os.devnull, 'w') as devnull: 680 ret = subprocess.call(['which', 'lspci'], 681 stdout=devnull, stderr=devnull) 682 if ret != 0: 683 print("'lspci' not found - please install 'pciutils'") 684 sys.exit(1) 685 parse_args() 686 check_modules() 687 clear_data() 688 get_device_details(network_devices) 689 get_device_details(crypto_devices) 690 get_device_details(eventdev_devices) 691 get_device_details(mempool_devices) 692 get_device_details(compress_devices) 693 do_arg_actions() 694 695if __name__ == "__main__": 696 main() 697