1#!/usr/bin/env python3 2# SPDX-License-Identifier: BSD-3-Clause 3# Copyright(c) 2010-2014 Intel Corporation 4# 5 6import sys 7import os 8import subprocess 9import argparse 10import platform 11 12from glob import glob 13from os.path import exists, basename 14from os.path import join as path_join 15 16# The PCI base class for all devices 17network_class = {'Class': '02', 'Vendor': None, 'Device': None, 18 'SVendor': None, 'SDevice': None} 19acceleration_class = {'Class': '12', 'Vendor': None, 'Device': None, 20 'SVendor': None, 'SDevice': None} 21ifpga_class = {'Class': '12', 'Vendor': '8086', 'Device': '0b30', 22 'SVendor': None, 'SDevice': None} 23encryption_class = {'Class': '10', 'Vendor': None, 'Device': None, 24 'SVendor': None, 'SDevice': None} 25intel_processor_class = {'Class': '0b', 'Vendor': '8086', 'Device': None, 26 'SVendor': None, 'SDevice': None} 27cavium_sso = {'Class': '08', 'Vendor': '177d', 'Device': 'a04b,a04d', 28 'SVendor': None, 'SDevice': None} 29cavium_fpa = {'Class': '08', 'Vendor': '177d', 'Device': 'a053', 30 'SVendor': None, 'SDevice': None} 31cavium_pkx = {'Class': '08', 'Vendor': '177d', 'Device': 'a0dd,a049', 32 'SVendor': None, 'SDevice': None} 33cavium_tim = {'Class': '08', 'Vendor': '177d', 'Device': 'a051', 34 'SVendor': None, 'SDevice': None} 35cavium_zip = {'Class': '12', 'Vendor': '177d', 'Device': 'a037', 36 'SVendor': None, 'SDevice': None} 37avp_vnic = {'Class': '05', 'Vendor': '1af4', 'Device': '1110', 38 'SVendor': None, 'SDevice': None} 39 40octeontx2_sso = {'Class': '08', 'Vendor': '177d', 'Device': 'a0f9,a0fa', 41 'SVendor': None, 'SDevice': None} 42octeontx2_npa = {'Class': '08', 'Vendor': '177d', 'Device': 'a0fb,a0fc', 43 'SVendor': None, 'SDevice': None} 44octeontx2_dma = {'Class': '08', 'Vendor': '177d', 'Device': 'a081', 45 'SVendor': None, 'SDevice': None} 46octeontx2_ree = {'Class': '08', 'Vendor': '177d', 'Device': 'a0f4', 47 'SVendor': None, 'SDevice': None} 48 49intel_ioat_bdw = {'Class': '08', 'Vendor': '8086', 50 'Device': '6f20,6f21,6f22,6f23,6f24,6f25,6f26,6f27,6f2e,6f2f', 51 'SVendor': None, 'SDevice': None} 52intel_ioat_skx = {'Class': '08', 'Vendor': '8086', 'Device': '2021', 53 'SVendor': None, 'SDevice': None} 54intel_ioat_icx = {'Class': '08', 'Vendor': '8086', 'Device': '0b00', 55 'SVendor': None, 'SDevice': None} 56intel_idxd_spr = {'Class': '08', 'Vendor': '8086', 'Device': '0b25', 57 'SVendor': None, 'SDevice': None} 58intel_ntb_skx = {'Class': '06', 'Vendor': '8086', 'Device': '201c', 59 'SVendor': None, 'SDevice': None} 60intel_ntb_icx = {'Class': '06', 'Vendor': '8086', 'Device': '347e', 61 'SVendor': None, 'SDevice': None} 62 63network_devices = [network_class, cavium_pkx, avp_vnic, ifpga_class] 64baseband_devices = [acceleration_class] 65crypto_devices = [encryption_class, intel_processor_class] 66eventdev_devices = [cavium_sso, cavium_tim, octeontx2_sso] 67mempool_devices = [cavium_fpa, octeontx2_npa] 68compress_devices = [cavium_zip] 69regex_devices = [octeontx2_ree] 70misc_devices = [intel_ioat_bdw, intel_ioat_skx, intel_ioat_icx, intel_idxd_spr, 71 intel_ntb_skx, intel_ntb_icx, 72 octeontx2_dma] 73 74# global dict ethernet devices present. Dictionary indexed by PCI address. 75# Each device within this is itself a dictionary of device properties 76devices = {} 77# list of supported DPDK drivers 78dpdk_drivers = ["igb_uio", "vfio-pci", "uio_pci_generic"] 79# list of currently loaded kernel modules 80loaded_modules = None 81 82# command-line arg flags 83b_flag = None 84status_flag = False 85force_flag = False 86args = [] 87 88# check if a specific kernel module is loaded 89def module_is_loaded(module): 90 global loaded_modules 91 92 if module == 'vfio_pci': 93 module = 'vfio-pci' 94 95 if loaded_modules: 96 return module in loaded_modules 97 98 # Get list of sysfs modules (both built-in and dynamically loaded) 99 sysfs_path = '/sys/module/' 100 101 # Get the list of directories in sysfs_path 102 sysfs_mods = [m for m in os.listdir(sysfs_path) 103 if os.path.isdir(os.path.join(sysfs_path, m))] 104 105 # special case for vfio_pci (module is named vfio-pci, 106 # but its .ko is named vfio_pci) 107 sysfs_mods = [a if a != 'vfio_pci' else 'vfio-pci' for a in sysfs_mods] 108 109 loaded_modules = sysfs_mods 110 111 # add built-in modules as loaded 112 release = platform.uname().release 113 filename = os.path.join("/lib/modules/", release, "modules.builtin") 114 if os.path.exists(filename): 115 try: 116 with open(filename) as f: 117 loaded_modules += [os.path.splitext(os.path.basename(mod))[0] for mod in f] 118 except IOError: 119 print("Warning: cannot read list of built-in kernel modules") 120 121 return module in loaded_modules 122 123 124def check_modules(): 125 '''Checks that igb_uio is loaded''' 126 global dpdk_drivers 127 128 # list of supported modules 129 mods = [{"Name": driver, "Found": False} for driver in dpdk_drivers] 130 131 # first check if module is loaded 132 for mod in mods: 133 if module_is_loaded(mod["Name"]): 134 mod["Found"] = True 135 136 # check if we have at least one loaded module 137 if True not in [mod["Found"] for mod in mods] and b_flag is not None: 138 print("Warning: no supported DPDK kernel modules are loaded", file=sys.stderr) 139 140 # change DPDK driver list to only contain drivers that are loaded 141 dpdk_drivers = [mod["Name"] for mod in mods if mod["Found"]] 142 143 144def has_driver(dev_id): 145 '''return true if a device is assigned to a driver. False otherwise''' 146 return "Driver_str" in devices[dev_id] 147 148 149def get_pci_device_details(dev_id, probe_lspci): 150 '''This function gets additional details for a PCI device''' 151 device = {} 152 153 if probe_lspci: 154 extra_info = subprocess.check_output(["lspci", "-vmmks", dev_id]).splitlines() 155 # parse lspci details 156 for line in extra_info: 157 if not line: 158 continue 159 name, value = line.decode("utf8").split("\t", 1) 160 name = name.strip(":") + "_str" 161 device[name] = value 162 # check for a unix interface name 163 device["Interface"] = "" 164 for base, dirs, _ in os.walk("/sys/bus/pci/devices/%s/" % dev_id): 165 if "net" in dirs: 166 device["Interface"] = \ 167 ",".join(os.listdir(os.path.join(base, "net"))) 168 break 169 # check if a port is used for ssh connection 170 device["Ssh_if"] = False 171 device["Active"] = "" 172 173 return device 174 175def clear_data(): 176 '''This function clears any old data''' 177 global devices 178 devices = {} 179 180def get_device_details(devices_type): 181 '''This function populates the "devices" dictionary. The keys used are 182 the pci addresses (domain:bus:slot.func). The values are themselves 183 dictionaries - one for each NIC.''' 184 global devices 185 global dpdk_drivers 186 187 # first loop through and read details for all devices 188 # request machine readable format, with numeric IDs and String 189 dev = {} 190 dev_lines = subprocess.check_output(["lspci", "-Dvmmnnk"]).splitlines() 191 for dev_line in dev_lines: 192 if not dev_line: 193 if device_type_match(dev, devices_type): 194 # Replace "Driver" with "Driver_str" to have consistency of 195 # of dictionary key names 196 if "Driver" in dev.keys(): 197 dev["Driver_str"] = dev.pop("Driver") 198 if "Module" in dev.keys(): 199 dev["Module_str"] = dev.pop("Module") 200 # use dict to make copy of dev 201 devices[dev["Slot"]] = dict(dev) 202 # Clear previous device's data 203 dev = {} 204 else: 205 name, value = dev_line.decode("utf8").split("\t", 1) 206 value_list = value.rsplit(' ', 1) 207 if value_list: 208 # String stored in <name>_str 209 dev[name.rstrip(":") + '_str'] = value_list[0] 210 # Numeric IDs 211 dev[name.rstrip(":")] = value_list[len(value_list) - 1] \ 212 .rstrip("]").lstrip("[") 213 214 if devices_type == network_devices: 215 # check what is the interface if any for an ssh connection if 216 # any to this host, so we can mark it later. 217 ssh_if = [] 218 route = subprocess.check_output(["ip", "-o", "route"]) 219 # filter out all lines for 169.254 routes 220 route = "\n".join(filter(lambda ln: not ln.startswith("169.254"), 221 route.decode().splitlines())) 222 rt_info = route.split() 223 for i in range(len(rt_info) - 1): 224 if rt_info[i] == "dev": 225 ssh_if.append(rt_info[i+1]) 226 227 # based on the basic info, get extended text details 228 for d in devices.keys(): 229 if not device_type_match(devices[d], devices_type): 230 continue 231 232 # get additional info and add it to existing data 233 devices[d] = devices[d].copy() 234 # No need to probe lspci 235 devices[d].update(get_pci_device_details(d, False).items()) 236 237 if devices_type == network_devices: 238 for _if in ssh_if: 239 if _if in devices[d]["Interface"].split(","): 240 devices[d]["Ssh_if"] = True 241 devices[d]["Active"] = "*Active*" 242 break 243 244 # add igb_uio to list of supporting modules if needed 245 if "Module_str" in devices[d]: 246 for driver in dpdk_drivers: 247 if driver not in devices[d]["Module_str"]: 248 devices[d]["Module_str"] = \ 249 devices[d]["Module_str"] + ",%s" % driver 250 else: 251 devices[d]["Module_str"] = ",".join(dpdk_drivers) 252 253 # make sure the driver and module strings do not have any duplicates 254 if has_driver(d): 255 modules = devices[d]["Module_str"].split(",") 256 if devices[d]["Driver_str"] in modules: 257 modules.remove(devices[d]["Driver_str"]) 258 devices[d]["Module_str"] = ",".join(modules) 259 260 261def device_type_match(dev, devices_type): 262 for i in range(len(devices_type)): 263 param_count = len( 264 [x for x in devices_type[i].values() if x is not None]) 265 match_count = 0 266 if dev["Class"][0:2] == devices_type[i]["Class"]: 267 match_count = match_count + 1 268 for key in devices_type[i].keys(): 269 if key != 'Class' and devices_type[i][key]: 270 value_list = devices_type[i][key].split(',') 271 for value in value_list: 272 if value.strip(' ') == dev[key]: 273 match_count = match_count + 1 274 # count must be the number of non None parameters to match 275 if match_count == param_count: 276 return True 277 return False 278 279def dev_id_from_dev_name(dev_name): 280 '''Take a device "name" - a string passed in by user to identify a NIC 281 device, and determine the device id - i.e. the domain:bus:slot.func - for 282 it, which can then be used to index into the devices array''' 283 284 # check if it's already a suitable index 285 if dev_name in devices: 286 return dev_name 287 # check if it's an index just missing the domain part 288 if "0000:" + dev_name in devices: 289 return "0000:" + dev_name 290 291 # check if it's an interface name, e.g. eth1 292 for d in devices.keys(): 293 if dev_name in devices[d]["Interface"].split(","): 294 return devices[d]["Slot"] 295 # if nothing else matches - error 296 raise ValueError("Unknown device: %s. " 297 "Please specify device in \"bus:slot.func\" format" % dev_name) 298 299 300def unbind_one(dev_id, force): 301 '''Unbind the device identified by "dev_id" from its current driver''' 302 dev = devices[dev_id] 303 if not has_driver(dev_id): 304 print("Notice: %s %s %s is not currently managed by any driver" % 305 (dev["Slot"], dev["Device_str"], dev["Interface"]), file=sys.stderr) 306 return 307 308 # prevent us disconnecting ourselves 309 if dev["Ssh_if"] and not force: 310 print("Warning: routing table indicates that interface %s is active. " 311 "Skipping unbind" % dev_id, file=sys.stderr) 312 return 313 314 # write to /sys to unbind 315 filename = "/sys/bus/pci/drivers/%s/unbind" % dev["Driver_str"] 316 try: 317 f = open(filename, "a") 318 except: 319 sys.exit("Error: unbind failed for %s - Cannot open %s" % 320 (dev_id, filename)) 321 f.write(dev_id) 322 f.close() 323 324 325def bind_one(dev_id, driver, force): 326 '''Bind the device given by "dev_id" to the driver "driver". If the device 327 is already bound to a different driver, it will be unbound first''' 328 dev = devices[dev_id] 329 saved_driver = None # used to rollback any unbind in case of failure 330 331 # prevent disconnection of our ssh session 332 if dev["Ssh_if"] and not force: 333 print("Warning: routing table indicates that interface %s is active. " 334 "Not modifying" % dev_id, file=sys.stderr) 335 return 336 337 # unbind any existing drivers we don't want 338 if has_driver(dev_id): 339 if dev["Driver_str"] == driver: 340 print("Notice: %s already bound to driver %s, skipping" % 341 (dev_id, driver), file=sys.stderr) 342 return 343 saved_driver = dev["Driver_str"] 344 unbind_one(dev_id, force) 345 dev["Driver_str"] = "" # clear driver string 346 347 # For kernels >= 3.15 driver_override can be used to specify the driver 348 # for a device rather than relying on the driver to provide a positive 349 # match of the device. The existing process of looking up 350 # the vendor and device ID, adding them to the driver new_id, 351 # will erroneously bind other devices too which has the additional burden 352 # of unbinding those devices 353 if driver in dpdk_drivers: 354 filename = "/sys/bus/pci/devices/%s/driver_override" % dev_id 355 if exists(filename): 356 try: 357 f = open(filename, "w") 358 except: 359 print("Error: bind failed for %s - Cannot open %s" 360 % (dev_id, filename), file=sys.stderr) 361 return 362 try: 363 f.write("%s" % driver) 364 f.close() 365 except: 366 print("Error: bind failed for %s - Cannot write driver %s to " 367 "PCI ID " % (dev_id, driver), file=sys.stderr) 368 return 369 # For kernels < 3.15 use new_id to add PCI id's to the driver 370 else: 371 filename = "/sys/bus/pci/drivers/%s/new_id" % driver 372 try: 373 f = open(filename, "w") 374 except: 375 print("Error: bind failed for %s - Cannot open %s" 376 % (dev_id, filename), file=sys.stderr) 377 return 378 try: 379 # Convert Device and Vendor Id to int to write to new_id 380 f.write("%04x %04x" % (int(dev["Vendor"], 16), 381 int(dev["Device"], 16))) 382 f.close() 383 except: 384 print("Error: bind failed for %s - Cannot write new PCI ID to " 385 "driver %s" % (dev_id, driver), file=sys.stderr) 386 return 387 388 # do the bind by writing to /sys 389 filename = "/sys/bus/pci/drivers/%s/bind" % driver 390 try: 391 f = open(filename, "a") 392 except: 393 print("Error: bind failed for %s - Cannot open %s" 394 % (dev_id, filename), file=sys.stderr) 395 if saved_driver is not None: # restore any previous driver 396 bind_one(dev_id, saved_driver, force) 397 return 398 try: 399 f.write(dev_id) 400 f.close() 401 except: 402 # for some reason, closing dev_id after adding a new PCI ID to new_id 403 # results in IOError. however, if the device was successfully bound, 404 # we don't care for any errors and can safely ignore IOError 405 tmp = get_pci_device_details(dev_id, True) 406 if "Driver_str" in tmp and tmp["Driver_str"] == driver: 407 return 408 print("Error: bind failed for %s - Cannot bind to driver %s" 409 % (dev_id, driver), file=sys.stderr) 410 if saved_driver is not None: # restore any previous driver 411 bind_one(dev_id, saved_driver, force) 412 return 413 414 # For kernels > 3.15 driver_override is used to bind a device to a driver. 415 # Before unbinding it, overwrite driver_override with empty string so that 416 # the device can be bound to any other driver 417 filename = "/sys/bus/pci/devices/%s/driver_override" % dev_id 418 if exists(filename): 419 try: 420 f = open(filename, "w") 421 except: 422 sys.exit("Error: unbind failed for %s - Cannot open %s" 423 % (dev_id, filename)) 424 try: 425 f.write("\00") 426 f.close() 427 except: 428 sys.exit("Error: unbind failed for %s - Cannot open %s" 429 % (dev_id, filename)) 430 431 432def unbind_all(dev_list, force=False): 433 """Unbind method, takes a list of device locations""" 434 435 if dev_list[0] == "dpdk": 436 for d in devices.keys(): 437 if "Driver_str" in devices[d]: 438 if devices[d]["Driver_str"] in dpdk_drivers: 439 unbind_one(devices[d]["Slot"], force) 440 return 441 442 try: 443 dev_list = map(dev_id_from_dev_name, dev_list) 444 except ValueError as ex: 445 print(ex) 446 sys.exit(1) 447 448 for d in dev_list: 449 unbind_one(d, force) 450 451 452def bind_all(dev_list, driver, force=False): 453 """Bind method, takes a list of device locations""" 454 global devices 455 456 # a common user error is to forget to specify the driver the devices need to 457 # be bound to. check if the driver is a valid device, and if it is, show 458 # a meaningful error. 459 try: 460 dev_id_from_dev_name(driver) 461 # if we've made it this far, this means that the "driver" was a valid 462 # device string, so it's probably not a valid driver name. 463 sys.exit("Error: Driver '%s' does not look like a valid driver. " \ 464 "Did you forget to specify the driver to bind devices to?" % driver) 465 except ValueError: 466 # driver generated error - it's not a valid device ID, so all is well 467 pass 468 469 # check if we're attempting to bind to a driver that isn't loaded 470 if not module_is_loaded(driver.replace('-', '_')): 471 sys.exit("Error: Driver '%s' is not loaded." % driver) 472 473 try: 474 dev_list = map(dev_id_from_dev_name, dev_list) 475 except ValueError as ex: 476 sys.exit(ex) 477 478 for d in dev_list: 479 bind_one(d, driver, force) 480 481 # For kernels < 3.15 when binding devices to a generic driver 482 # (i.e. one that doesn't have a PCI ID table) using new_id, some devices 483 # that are not bound to any other driver could be bound even if no one has 484 # asked them to. hence, we check the list of drivers again, and see if 485 # some of the previously-unbound devices were erroneously bound. 486 if not exists("/sys/bus/pci/devices/%s/driver_override" % d): 487 for d in devices.keys(): 488 # skip devices that were already bound or that we know should be bound 489 if "Driver_str" in devices[d] or d in dev_list: 490 continue 491 492 # update information about this device 493 devices[d] = dict(devices[d].items() + 494 get_pci_device_details(d, True).items()) 495 496 # check if updated information indicates that the device was bound 497 if "Driver_str" in devices[d]: 498 unbind_one(d, force) 499 500 501def display_devices(title, dev_list, extra_params=None): 502 '''Displays to the user the details of a list of devices given in 503 "dev_list". The "extra_params" parameter, if given, should contain a string 504 with %()s fields in it for replacement by the named fields in each 505 device's dictionary.''' 506 strings = [] # this holds the strings to print. We sort before printing 507 print("\n%s" % title) 508 print("="*len(title)) 509 if not dev_list: 510 strings.append("<none>") 511 else: 512 for dev in dev_list: 513 if extra_params is not None: 514 strings.append("%s '%s %s' %s" % (dev["Slot"], 515 dev["Device_str"], 516 dev["Device"], 517 extra_params % dev)) 518 else: 519 strings.append("%s '%s'" % (dev["Slot"], dev["Device_str"])) 520 # sort before printing, so that the entries appear in PCI order 521 strings.sort() 522 print("\n".join(strings)) # print one per line 523 524def show_device_status(devices_type, device_name, if_field=False): 525 global dpdk_drivers 526 kernel_drv = [] 527 dpdk_drv = [] 528 no_drv = [] 529 530 # split our list of network devices into the three categories above 531 for d in devices.keys(): 532 if device_type_match(devices[d], devices_type): 533 if not has_driver(d): 534 no_drv.append(devices[d]) 535 continue 536 if devices[d]["Driver_str"] in dpdk_drivers: 537 dpdk_drv.append(devices[d]) 538 else: 539 kernel_drv.append(devices[d]) 540 541 n_devs = len(dpdk_drv) + len(kernel_drv) + len(no_drv) 542 543 # don't bother displaying anything if there are no devices 544 if n_devs == 0: 545 msg = "No '%s' devices detected" % device_name 546 print("") 547 print(msg) 548 print("".join('=' * len(msg))) 549 return 550 551 # print each category separately, so we can clearly see what's used by DPDK 552 if dpdk_drv: 553 display_devices("%s devices using DPDK-compatible driver" % device_name, 554 dpdk_drv, "drv=%(Driver_str)s unused=%(Module_str)s") 555 if kernel_drv: 556 if_text = "" 557 if if_field: 558 if_text = "if=%(Interface)s " 559 display_devices("%s devices using kernel driver" % device_name, kernel_drv, 560 if_text + "drv=%(Driver_str)s " 561 "unused=%(Module_str)s %(Active)s") 562 if no_drv: 563 display_devices("Other %s devices" % device_name, no_drv, 564 "unused=%(Module_str)s") 565 566def show_status(): 567 '''Function called when the script is passed the "--status" option. 568 Displays to the user what devices are bound to the igb_uio driver, the 569 kernel driver or to no driver''' 570 571 if status_dev in ["net", "all"]: 572 show_device_status(network_devices, "Network", if_field=True) 573 574 if status_dev in ["baseband", "all"]: 575 show_device_status(baseband_devices, "Baseband") 576 577 if status_dev in ["crypto", "all"]: 578 show_device_status(crypto_devices, "Crypto") 579 580 if status_dev in ["event", "all"]: 581 show_device_status(eventdev_devices, "Eventdev") 582 583 if status_dev in ["mempool", "all"]: 584 show_device_status(mempool_devices, "Mempool") 585 586 if status_dev in ["compress", "all"]: 587 show_device_status(compress_devices, "Compress") 588 589 if status_dev in ["misc", "all"]: 590 show_device_status(misc_devices, "Misc (rawdev)") 591 592 if status_dev in ["regex", "all"]: 593 show_device_status(regex_devices, "Regex") 594 595 596def pci_glob(arg): 597 '''Returns a list containing either: 598 * List of PCI B:D:F matching arg, using shell wildcards e.g. 80:04.* 599 * Only the passed arg if matching list is empty''' 600 sysfs_path = "/sys/bus/pci/devices" 601 for _glob in [arg, '0000:' + arg]: 602 paths = [basename(path) for path in glob(path_join(sysfs_path, _glob))] 603 if paths: 604 return paths 605 return [arg] 606 607 608def parse_args(): 609 '''Parses the command-line arguments given by the user and takes the 610 appropriate action for each''' 611 global b_flag 612 global status_flag 613 global status_dev 614 global force_flag 615 global args 616 617 parser = argparse.ArgumentParser( 618 description='Utility to bind and unbind devices from Linux kernel', 619 formatter_class=argparse.RawDescriptionHelpFormatter, 620 epilog=""" 621Examples: 622--------- 623 624To display current device status: 625 %(prog)s --status 626 627To display current network device status: 628 %(prog)s --status-dev net 629 630To bind eth1 from the current driver and move to use vfio-pci 631 %(prog)s --bind=vfio-pci eth1 632 633To unbind 0000:01:00.0 from using any driver 634 %(prog)s -u 0000:01:00.0 635 636To bind 0000:02:00.0 and 0000:02:00.1 to the ixgbe kernel driver 637 %(prog)s -b ixgbe 02:00.0 02:00.1 638""") 639 640 parser.add_argument( 641 '-s', 642 '--status', 643 action='store_true', 644 help="Print the current status of all known devices.") 645 parser.add_argument( 646 '--status-dev', 647 help="Print the status of given device group.", 648 choices=['baseband', 'compress', 'crypto', 'event', 649 'mempool', 'misc', 'net', 'regex']) 650 bind_group = parser.add_mutually_exclusive_group() 651 bind_group.add_argument( 652 '-b', 653 '--bind', 654 metavar='DRIVER', 655 help="Select the driver to use or \"none\" to unbind the device") 656 bind_group.add_argument( 657 '-u', 658 '--unbind', 659 action='store_true', 660 help="Unbind a device (equivalent to \"-b none\")") 661 parser.add_argument( 662 '--force', 663 action='store_true', 664 help=""" 665Override restriction on binding devices in use by Linux" 666WARNING: This can lead to loss of network connection and should be used with caution. 667""") 668 parser.add_argument( 669 'devices', 670 metavar='DEVICE', 671 nargs='*', 672 help=""" 673Device specified as PCI "domain:bus:slot.func" syntax or "bus:slot.func" syntax. 674For devices bound to Linux kernel drivers, they may be referred to by interface name. 675""") 676 677 opt = parser.parse_args() 678 679 if opt.status_dev: 680 status_flag = True 681 status_dev = opt.status_dev 682 if opt.status: 683 status_flag = True 684 status_dev = "all" 685 if opt.force: 686 force_flag = True 687 if opt.bind: 688 b_flag = opt.bind 689 elif opt.unbind: 690 b_flag = "none" 691 args = opt.devices 692 693 if not b_flag and not status_flag: 694 print("Error: No action specified for devices. " 695 "Please give a --bind, --ubind or --status option", 696 file=sys.stderr) 697 parser.print_usage() 698 sys.exit(1) 699 700 if b_flag and not args: 701 print("Error: No devices specified.", file=sys.stderr) 702 parser.print_usage() 703 sys.exit(1) 704 705 # resolve any PCI globs in the args 706 new_args = [] 707 for arg in args: 708 new_args.extend(pci_glob(arg)) 709 args = new_args 710 711def do_arg_actions(): 712 '''do the actual action requested by the user''' 713 global b_flag 714 global status_flag 715 global force_flag 716 global args 717 718 if b_flag in ["none", "None"]: 719 unbind_all(args, force_flag) 720 elif b_flag is not None: 721 bind_all(args, b_flag, force_flag) 722 if status_flag: 723 if b_flag is not None: 724 clear_data() 725 # refresh if we have changed anything 726 get_device_details(network_devices) 727 get_device_details(baseband_devices) 728 get_device_details(crypto_devices) 729 get_device_details(eventdev_devices) 730 get_device_details(mempool_devices) 731 get_device_details(compress_devices) 732 get_device_details(regex_devices) 733 get_device_details(misc_devices) 734 show_status() 735 736 737def main(): 738 '''program main function''' 739 # check if lspci is installed, suppress any output 740 with open(os.devnull, 'w') as devnull: 741 ret = subprocess.call(['which', 'lspci'], 742 stdout=devnull, stderr=devnull) 743 if ret != 0: 744 sys.exit("'lspci' not found - please install 'pciutils'") 745 parse_args() 746 check_modules() 747 clear_data() 748 get_device_details(network_devices) 749 get_device_details(baseband_devices) 750 get_device_details(crypto_devices) 751 get_device_details(eventdev_devices) 752 get_device_details(mempool_devices) 753 get_device_details(compress_devices) 754 get_device_details(regex_devices) 755 get_device_details(misc_devices) 756 do_arg_actions() 757 758if __name__ == "__main__": 759 main() 760