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 39intel_ioat_bdw = {'Class': '08', 'Vendor': '8086', 'Device': '6f20,6f21,6f22,6f23,6f24,6f25,6f26,6f27,6f2e,6f2f', 40 'SVendor': None, 'SDevice': None} 41intel_ioat_skx = {'Class': '08', 'Vendor': '8086', 'Device': '2021', 42 'SVendor': None, 'SDevice': None} 43 44network_devices = [network_class, cavium_pkx, avp_vnic, ifpga_class] 45crypto_devices = [encryption_class, intel_processor_class] 46eventdev_devices = [cavium_sso, cavium_tim, octeontx2_sso] 47mempool_devices = [cavium_fpa, octeontx2_npa] 48compress_devices = [cavium_zip] 49misc_devices = [intel_ioat_bdw, intel_ioat_skx] 50 51# global dict ethernet devices present. Dictionary indexed by PCI address. 52# Each device within this is itself a dictionary of device properties 53devices = {} 54# list of supported DPDK drivers 55dpdk_drivers = ["igb_uio", "vfio-pci", "uio_pci_generic"] 56 57# command-line arg flags 58b_flag = None 59status_flag = False 60force_flag = False 61args = [] 62 63 64def usage(): 65 '''Print usage information for the program''' 66 argv0 = basename(sys.argv[0]) 67 print(""" 68Usage: 69------ 70 71 %(argv0)s [options] DEVICE1 DEVICE2 .... 72 73where DEVICE1, DEVICE2 etc, are specified via PCI "domain:bus:slot.func" syntax 74or "bus:slot.func" syntax. For devices bound to Linux kernel drivers, they may 75also be referred to by Linux interface name e.g. eth0, eth1, em0, em1, etc. 76 77Options: 78 --help, --usage: 79 Display usage information and quit 80 81 -s, --status: 82 Print the current status of all known network, crypto, event 83 and mempool devices. 84 For each device, it displays the PCI domain, bus, slot and function, 85 along with a text description of the device. Depending upon whether the 86 device is being used by a kernel driver, the igb_uio driver, or no 87 driver, other relevant information will be displayed: 88 * the Linux interface name e.g. if=eth0 89 * the driver being used e.g. drv=igb_uio 90 * any suitable drivers not currently using that device 91 e.g. unused=igb_uio 92 NOTE: if this flag is passed along with a bind/unbind option, the 93 status display will always occur after the other operations have taken 94 place. 95 96 --status-dev: 97 Print the status of given device group. Supported device groups are: 98 "net", "crypto", "event", "mempool" and "compress" 99 100 -b driver, --bind=driver: 101 Select the driver to use or \"none\" to unbind the device 102 103 -u, --unbind: 104 Unbind a device (Equivalent to \"-b none\") 105 106 --force: 107 By default, network devices which are used by Linux - as indicated by 108 having routes in the routing table - cannot be modified. Using the 109 --force flag overrides this behavior, allowing active links to be 110 forcibly unbound. 111 WARNING: This can lead to loss of network connection and should be used 112 with caution. 113 114Examples: 115--------- 116 117To display current device status: 118 %(argv0)s --status 119 120To display current network device status: 121 %(argv0)s --status-dev net 122 123To bind eth1 from the current driver and move to use igb_uio 124 %(argv0)s --bind=igb_uio eth1 125 126To unbind 0000:01:00.0 from using any driver 127 %(argv0)s -u 0000:01:00.0 128 129To bind 0000:02:00.0 and 0000:02:00.1 to the ixgbe kernel driver 130 %(argv0)s -b ixgbe 02:00.0 02:00.1 131 132 """ % locals()) # replace items from local variables 133 134 135# This is roughly compatible with check_output function in subprocess module 136# which is only available in python 2.7. 137def check_output(args, stderr=None): 138 '''Run a command and capture its output''' 139 return subprocess.Popen(args, stdout=subprocess.PIPE, 140 stderr=stderr).communicate()[0] 141 142 143def check_modules(): 144 '''Checks that igb_uio is loaded''' 145 global dpdk_drivers 146 147 # list of supported modules 148 mods = [{"Name": driver, "Found": False} for driver in dpdk_drivers] 149 150 # first check if module is loaded 151 try: 152 # Get list of sysfs modules (both built-in and dynamically loaded) 153 sysfs_path = '/sys/module/' 154 155 # Get the list of directories in sysfs_path 156 sysfs_mods = [os.path.join(sysfs_path, o) for o 157 in os.listdir(sysfs_path) 158 if os.path.isdir(os.path.join(sysfs_path, o))] 159 160 # Extract the last element of '/sys/module/abc' in the array 161 sysfs_mods = [a.split('/')[-1] for a in sysfs_mods] 162 163 # special case for vfio_pci (module is named vfio-pci, 164 # but its .ko is named vfio_pci) 165 sysfs_mods = [a if a != 'vfio_pci' else 'vfio-pci' for a in sysfs_mods] 166 167 for mod in mods: 168 if mod["Name"] in sysfs_mods: 169 mod["Found"] = True 170 except: 171 pass 172 173 # check if we have at least one loaded module 174 if True not in [mod["Found"] for mod in mods] and b_flag is not None: 175 if b_flag in dpdk_drivers: 176 print("Error - no supported modules(DPDK driver) are loaded") 177 sys.exit(1) 178 else: 179 print("Warning - no supported modules(DPDK driver) are loaded") 180 181 # change DPDK driver list to only contain drivers that are loaded 182 dpdk_drivers = [mod["Name"] for mod in mods if mod["Found"]] 183 184 185def has_driver(dev_id): 186 '''return true if a device is assigned to a driver. False otherwise''' 187 return "Driver_str" in devices[dev_id] 188 189 190def get_pci_device_details(dev_id, probe_lspci): 191 '''This function gets additional details for a PCI device''' 192 device = {} 193 194 if probe_lspci: 195 extra_info = check_output(["lspci", "-vmmks", dev_id]).splitlines() 196 197 # parse lspci details 198 for line in extra_info: 199 if len(line) == 0: 200 continue 201 name, value = line.decode().split("\t", 1) 202 name = name.strip(":") + "_str" 203 device[name] = value 204 # check for a unix interface name 205 device["Interface"] = "" 206 for base, dirs, _ in os.walk("/sys/bus/pci/devices/%s/" % dev_id): 207 if "net" in dirs: 208 device["Interface"] = \ 209 ",".join(os.listdir(os.path.join(base, "net"))) 210 break 211 # check if a port is used for ssh connection 212 device["Ssh_if"] = False 213 device["Active"] = "" 214 215 return device 216 217def clear_data(): 218 '''This function clears any old data''' 219 devices = {} 220 221def get_device_details(devices_type): 222 '''This function populates the "devices" dictionary. The keys used are 223 the pci addresses (domain:bus:slot.func). The values are themselves 224 dictionaries - one for each NIC.''' 225 global devices 226 global dpdk_drivers 227 228 # first loop through and read details for all devices 229 # request machine readable format, with numeric IDs and String 230 dev = {} 231 dev_lines = check_output(["lspci", "-Dvmmnnk"]).splitlines() 232 for dev_line in dev_lines: 233 if len(dev_line) == 0: 234 if device_type_match(dev, devices_type): 235 # Replace "Driver" with "Driver_str" to have consistency of 236 # of dictionary key names 237 if "Driver" in dev.keys(): 238 dev["Driver_str"] = dev.pop("Driver") 239 if "Module" in dev.keys(): 240 dev["Module_str"] = dev.pop("Module") 241 # use dict to make copy of dev 242 devices[dev["Slot"]] = dict(dev) 243 # Clear previous device's data 244 dev = {} 245 else: 246 name, value = dev_line.decode().split("\t", 1) 247 value_list = value.rsplit(' ', 1) 248 if len(value_list) > 1: 249 # String stored in <name>_str 250 dev[name.rstrip(":") + '_str'] = value_list[0] 251 # Numeric IDs 252 dev[name.rstrip(":")] = value_list[len(value_list) - 1] \ 253 .rstrip("]").lstrip("[") 254 255 if devices_type == network_devices: 256 # check what is the interface if any for an ssh connection if 257 # any to this host, so we can mark it later. 258 ssh_if = [] 259 route = check_output(["ip", "-o", "route"]) 260 # filter out all lines for 169.254 routes 261 route = "\n".join(filter(lambda ln: not ln.startswith("169.254"), 262 route.decode().splitlines())) 263 rt_info = route.split() 264 for i in range(len(rt_info) - 1): 265 if rt_info[i] == "dev": 266 ssh_if.append(rt_info[i+1]) 267 268 # based on the basic info, get extended text details 269 for d in devices.keys(): 270 if not device_type_match(devices[d], devices_type): 271 continue 272 273 # get additional info and add it to existing data 274 devices[d] = devices[d].copy() 275 # No need to probe lspci 276 devices[d].update(get_pci_device_details(d, False).items()) 277 278 if devices_type == network_devices: 279 for _if in ssh_if: 280 if _if in devices[d]["Interface"].split(","): 281 devices[d]["Ssh_if"] = True 282 devices[d]["Active"] = "*Active*" 283 break 284 285 # add igb_uio to list of supporting modules if needed 286 if "Module_str" in devices[d]: 287 for driver in dpdk_drivers: 288 if driver not in devices[d]["Module_str"]: 289 devices[d]["Module_str"] = \ 290 devices[d]["Module_str"] + ",%s" % driver 291 else: 292 devices[d]["Module_str"] = ",".join(dpdk_drivers) 293 294 # make sure the driver and module strings do not have any duplicates 295 if has_driver(d): 296 modules = devices[d]["Module_str"].split(",") 297 if devices[d]["Driver_str"] in modules: 298 modules.remove(devices[d]["Driver_str"]) 299 devices[d]["Module_str"] = ",".join(modules) 300 301 302def device_type_match(dev, devices_type): 303 for i in range(len(devices_type)): 304 param_count = len( 305 [x for x in devices_type[i].values() if x is not None]) 306 match_count = 0 307 if dev["Class"][0:2] == devices_type[i]["Class"]: 308 match_count = match_count + 1 309 for key in devices_type[i].keys(): 310 if key != 'Class' and devices_type[i][key]: 311 value_list = devices_type[i][key].split(',') 312 for value in value_list: 313 if value.strip(' ') == dev[key]: 314 match_count = match_count + 1 315 # count must be the number of non None parameters to match 316 if match_count == param_count: 317 return True 318 return False 319 320def dev_id_from_dev_name(dev_name): 321 '''Take a device "name" - a string passed in by user to identify a NIC 322 device, and determine the device id - i.e. the domain:bus:slot.func - for 323 it, which can then be used to index into the devices array''' 324 325 # check if it's already a suitable index 326 if dev_name in devices: 327 return dev_name 328 # check if it's an index just missing the domain part 329 elif "0000:" + dev_name in devices: 330 return "0000:" + dev_name 331 else: 332 # check if it's an interface name, e.g. eth1 333 for d in devices.keys(): 334 if dev_name in devices[d]["Interface"].split(","): 335 return devices[d]["Slot"] 336 # if nothing else matches - error 337 print("Unknown device: %s. " 338 "Please specify device in \"bus:slot.func\" format" % dev_name) 339 sys.exit(1) 340 341 342def unbind_one(dev_id, force): 343 '''Unbind the device identified by "dev_id" from its current driver''' 344 dev = devices[dev_id] 345 if not has_driver(dev_id): 346 print("%s %s %s is not currently managed by any driver\n" % 347 (dev["Slot"], dev["Device_str"], dev["Interface"])) 348 return 349 350 # prevent us disconnecting ourselves 351 if dev["Ssh_if"] and not force: 352 print("Routing table indicates that interface %s is active. " 353 "Skipping unbind" % (dev_id)) 354 return 355 356 # write to /sys to unbind 357 filename = "/sys/bus/pci/drivers/%s/unbind" % dev["Driver_str"] 358 try: 359 f = open(filename, "a") 360 except: 361 print("Error: unbind failed for %s - Cannot open %s" 362 % (dev_id, filename)) 363 sys.exit(1) 364 f.write(dev_id) 365 f.close() 366 367 368def bind_one(dev_id, driver, force): 369 '''Bind the device given by "dev_id" to the driver "driver". If the device 370 is already bound to a different driver, it will be unbound first''' 371 dev = devices[dev_id] 372 saved_driver = None # used to rollback any unbind in case of failure 373 374 # prevent disconnection of our ssh session 375 if dev["Ssh_if"] and not force: 376 print("Routing table indicates that interface %s is active. " 377 "Not modifying" % (dev_id)) 378 return 379 380 # unbind any existing drivers we don't want 381 if has_driver(dev_id): 382 if dev["Driver_str"] == driver: 383 print("%s already bound to driver %s, skipping\n" 384 % (dev_id, driver)) 385 return 386 else: 387 saved_driver = dev["Driver_str"] 388 unbind_one(dev_id, force) 389 dev["Driver_str"] = "" # clear driver string 390 391 # For kernels >= 3.15 driver_override can be used to specify the driver 392 # for a device rather than relying on the driver to provide a positive 393 # match of the device. The existing process of looking up 394 # the vendor and device ID, adding them to the driver new_id, 395 # will erroneously bind other devices too which has the additional burden 396 # of unbinding those devices 397 if driver in dpdk_drivers: 398 filename = "/sys/bus/pci/devices/%s/driver_override" % dev_id 399 if os.path.exists(filename): 400 try: 401 f = open(filename, "w") 402 except: 403 print("Error: bind failed for %s - Cannot open %s" 404 % (dev_id, filename)) 405 return 406 try: 407 f.write("%s" % driver) 408 f.close() 409 except: 410 print("Error: bind failed for %s - Cannot write driver %s to " 411 "PCI ID " % (dev_id, driver)) 412 return 413 # For kernels < 3.15 use new_id to add PCI id's to the driver 414 else: 415 filename = "/sys/bus/pci/drivers/%s/new_id" % driver 416 try: 417 f = open(filename, "w") 418 except: 419 print("Error: bind failed for %s - Cannot open %s" 420 % (dev_id, filename)) 421 return 422 try: 423 # Convert Device and Vendor Id to int to write to new_id 424 f.write("%04x %04x" % (int(dev["Vendor"],16), 425 int(dev["Device"], 16))) 426 f.close() 427 except: 428 print("Error: bind failed for %s - Cannot write new PCI ID to " 429 "driver %s" % (dev_id, driver)) 430 return 431 432 # do the bind by writing to /sys 433 filename = "/sys/bus/pci/drivers/%s/bind" % driver 434 try: 435 f = open(filename, "a") 436 except: 437 print("Error: bind failed for %s - Cannot open %s" 438 % (dev_id, filename)) 439 if saved_driver is not None: # restore any previous driver 440 bind_one(dev_id, saved_driver, force) 441 return 442 try: 443 f.write(dev_id) 444 f.close() 445 except: 446 # for some reason, closing dev_id after adding a new PCI ID to new_id 447 # results in IOError. however, if the device was successfully bound, 448 # we don't care for any errors and can safely ignore IOError 449 tmp = get_pci_device_details(dev_id, True) 450 if "Driver_str" in tmp and tmp["Driver_str"] == driver: 451 return 452 print("Error: bind failed for %s - Cannot bind to driver %s" 453 % (dev_id, driver)) 454 if saved_driver is not None: # restore any previous driver 455 bind_one(dev_id, saved_driver, force) 456 return 457 458 # For kernels > 3.15 driver_override is used to bind a device to a driver. 459 # Before unbinding it, overwrite driver_override with empty string so that 460 # the device can be bound to any other driver 461 filename = "/sys/bus/pci/devices/%s/driver_override" % dev_id 462 if os.path.exists(filename): 463 try: 464 f = open(filename, "w") 465 except: 466 print("Error: unbind failed for %s - Cannot open %s" 467 % (dev_id, filename)) 468 sys.exit(1) 469 try: 470 f.write("\00") 471 f.close() 472 except: 473 print("Error: unbind failed for %s - Cannot open %s" 474 % (dev_id, filename)) 475 sys.exit(1) 476 477 478def unbind_all(dev_list, force=False): 479 """Unbind method, takes a list of device locations""" 480 481 if dev_list[0] == "dpdk": 482 for d in devices.keys(): 483 if "Driver_str" in devices[d]: 484 if devices[d]["Driver_str"] in dpdk_drivers: 485 unbind_one(devices[d]["Slot"], force) 486 return 487 488 dev_list = map(dev_id_from_dev_name, dev_list) 489 for d in dev_list: 490 unbind_one(d, force) 491 492 493def bind_all(dev_list, driver, force=False): 494 """Bind method, takes a list of device locations""" 495 global devices 496 497 dev_list = map(dev_id_from_dev_name, dev_list) 498 499 for d in dev_list: 500 bind_one(d, driver, force) 501 502 # For kernels < 3.15 when binding devices to a generic driver 503 # (i.e. one that doesn't have a PCI ID table) using new_id, some devices 504 # that are not bound to any other driver could be bound even if no one has 505 # asked them to. hence, we check the list of drivers again, and see if 506 # some of the previously-unbound devices were erroneously bound. 507 if not os.path.exists("/sys/bus/pci/devices/%s/driver_override" % d): 508 for d in devices.keys(): 509 # skip devices that were already bound or that we know should be bound 510 if "Driver_str" in devices[d] or d in dev_list: 511 continue 512 513 # update information about this device 514 devices[d] = dict(devices[d].items() + 515 get_pci_device_details(d, True).items()) 516 517 # check if updated information indicates that the device was bound 518 if "Driver_str" in devices[d]: 519 unbind_one(d, force) 520 521 522def display_devices(title, dev_list, extra_params=None): 523 '''Displays to the user the details of a list of devices given in 524 "dev_list". The "extra_params" parameter, if given, should contain a string 525 with %()s fields in it for replacement by the named fields in each 526 device's dictionary.''' 527 strings = [] # this holds the strings to print. We sort before printing 528 print("\n%s" % title) 529 print("="*len(title)) 530 if len(dev_list) == 0: 531 strings.append("<none>") 532 else: 533 for dev in dev_list: 534 if extra_params is not None: 535 strings.append("%s '%s %s' %s" % (dev["Slot"], 536 dev["Device_str"], 537 dev["Device"], 538 extra_params % dev)) 539 else: 540 strings.append("%s '%s'" % (dev["Slot"], dev["Device_str"])) 541 # sort before printing, so that the entries appear in PCI order 542 strings.sort() 543 print("\n".join(strings)) # print one per line 544 545def show_device_status(devices_type, device_name): 546 global dpdk_drivers 547 kernel_drv = [] 548 dpdk_drv = [] 549 no_drv = [] 550 551 # split our list of network devices into the three categories above 552 for d in devices.keys(): 553 if device_type_match(devices[d], devices_type): 554 if not has_driver(d): 555 no_drv.append(devices[d]) 556 continue 557 if devices[d]["Driver_str"] in dpdk_drivers: 558 dpdk_drv.append(devices[d]) 559 else: 560 kernel_drv.append(devices[d]) 561 562 n_devs = len(dpdk_drv) + len(kernel_drv) + len(no_drv) 563 564 # don't bother displaying anything if there are no devices 565 if n_devs == 0: 566 msg = "No '%s' devices detected" % device_name 567 print("") 568 print(msg) 569 print("".join('=' * len(msg))) 570 return 571 572 # print each category separately, so we can clearly see what's used by DPDK 573 if len(dpdk_drv) != 0: 574 display_devices("%s devices using DPDK-compatible driver" % device_name, 575 dpdk_drv, "drv=%(Driver_str)s unused=%(Module_str)s") 576 if len(kernel_drv) != 0: 577 display_devices("%s devices using kernel driver" % device_name, kernel_drv, 578 "if=%(Interface)s drv=%(Driver_str)s " 579 "unused=%(Module_str)s %(Active)s") 580 if len(no_drv) != 0: 581 display_devices("Other %s devices" % device_name, no_drv, 582 "unused=%(Module_str)s") 583 584def show_status(): 585 '''Function called when the script is passed the "--status" option. 586 Displays to the user what devices are bound to the igb_uio driver, the 587 kernel driver or to no driver''' 588 589 if status_dev == "net" or status_dev == "all": 590 show_device_status(network_devices, "Network") 591 592 if status_dev == "crypto" or status_dev == "all": 593 show_device_status(crypto_devices, "Crypto") 594 595 if status_dev == "event" or status_dev == "all": 596 show_device_status(eventdev_devices, "Eventdev") 597 598 if status_dev == "mempool" or status_dev == "all": 599 show_device_status(mempool_devices, "Mempool") 600 601 if status_dev == "compress" or status_dev == "all": 602 show_device_status(compress_devices , "Compress") 603 604 if status_dev == "misc" or status_dev == "all": 605 show_device_status(misc_devices, "Misc (rawdev)") 606 607def parse_args(): 608 '''Parses the command-line arguments given by the user and takes the 609 appropriate action for each''' 610 global b_flag 611 global status_flag 612 global status_dev 613 global force_flag 614 global args 615 if len(sys.argv) <= 1: 616 usage() 617 sys.exit(0) 618 619 try: 620 opts, args = getopt.getopt(sys.argv[1:], "b:us", 621 ["help", "usage", "status", "status-dev=", 622 "force", "bind=", "unbind", ]) 623 except getopt.GetoptError as error: 624 print(str(error)) 625 print("Run '%s --usage' for further information" % sys.argv[0]) 626 sys.exit(1) 627 628 for opt, arg in opts: 629 if opt == "--help" or opt == "--usage": 630 usage() 631 sys.exit(0) 632 if opt == "--status-dev": 633 status_flag = True 634 status_dev = arg 635 if opt == "--status" or opt == "-s": 636 status_flag = True 637 status_dev = "all" 638 if opt == "--force": 639 force_flag = True 640 if opt == "-b" or opt == "-u" or opt == "--bind" or opt == "--unbind": 641 if b_flag is not None: 642 print("Error - Only one bind or unbind may be specified\n") 643 sys.exit(1) 644 if opt == "-u" or opt == "--unbind": 645 b_flag = "none" 646 else: 647 b_flag = arg 648 649 650def do_arg_actions(): 651 '''do the actual action requested by the user''' 652 global b_flag 653 global status_flag 654 global force_flag 655 global args 656 657 if b_flag is None and not status_flag: 658 print("Error: No action specified for devices." 659 "Please give a -b or -u option") 660 print("Run '%s --usage' for further information" % sys.argv[0]) 661 sys.exit(1) 662 663 if b_flag is not None and len(args) == 0: 664 print("Error: No devices specified.") 665 print("Run '%s --usage' for further information" % sys.argv[0]) 666 sys.exit(1) 667 668 if b_flag == "none" or b_flag == "None": 669 unbind_all(args, force_flag) 670 elif b_flag is not None: 671 bind_all(args, b_flag, force_flag) 672 if status_flag: 673 if b_flag is not None: 674 clear_data() 675 # refresh if we have changed anything 676 get_device_details(network_devices) 677 get_device_details(crypto_devices) 678 get_device_details(eventdev_devices) 679 get_device_details(mempool_devices) 680 get_device_details(compress_devices) 681 get_device_details(misc_devices) 682 show_status() 683 684 685def main(): 686 '''program main function''' 687 # check if lspci is installed, suppress any output 688 with open(os.devnull, 'w') as devnull: 689 ret = subprocess.call(['which', 'lspci'], 690 stdout=devnull, stderr=devnull) 691 if ret != 0: 692 print("'lspci' not found - please install 'pciutils'") 693 sys.exit(1) 694 parse_args() 695 check_modules() 696 clear_data() 697 get_device_details(network_devices) 698 get_device_details(crypto_devices) 699 get_device_details(eventdev_devices) 700 get_device_details(mempool_devices) 701 get_device_details(compress_devices) 702 get_device_details(misc_devices) 703 do_arg_actions() 704 705if __name__ == "__main__": 706 main() 707