3 # -------------------------------------------------------------------------
5 # Utility to dump PMD_INFO_STRING support from an object file
7 # -------------------------------------------------------------------------
8 from __future__ import print_function
14 from elftools.common.exceptions import ELFError
15 from elftools.common.py3compat import (byte2int, bytes2str, str2bytes)
16 from elftools.elf.elffile import ELFFile
17 from optparse import OptionParser
19 # For running from development directory. It should take precedence over the
20 # installed pyelftools.
21 sys.path.insert(0, '.')
26 # ===========================================
31 Class for vendors. This is the top level class
32 for the devices belong to a specific vendor.
33 self.devices is the device dictionary
34 subdevices are in each device.
37 def __init__(self, vendorStr):
39 Class initializes with the raw line from pci.ids
40 Parsing takes place inside __init__
42 self.ID = vendorStr.split()[0]
43 self.name = vendorStr.replace("%s " % self.ID, "").rstrip()
46 def addDevice(self, deviceStr):
48 Adds a device to self.devices
49 takes the raw line from pci.ids
53 if devID in self.devices:
56 self.devices[devID] = Device(deviceStr)
59 print(self.ID, self.name)
60 for id, dev in self.devices.items():
63 def find_device(self, devid):
64 # convert to a hex string and remove 0x
65 devid = hex(devid)[2:]
67 return self.devices[devid]
69 return Device("%s Unknown Device" % devid)
74 def __init__(self, deviceStr):
76 Class for each device.
77 Each vendor has its own devices dictionary.
80 self.ID = s.split()[0]
81 self.name = s.replace("%s " % self.ID, "")
85 print("\t%s\t%s" % (self.ID, self.name))
86 for subID, subdev in self.subdevices.items():
89 def addSubDevice(self, subDeviceStr):
91 Adds a subvendor, subdevice to device.
92 Uses raw line from pci.ids
94 s = subDeviceStr.strip()
98 subDeviceName = s.split(" ")[-1]
99 devID = "%s:%s" % (subVendorID, subDeviceID)
100 self.subdevices[devID] = SubDevice(
101 subVendorID, subDeviceID, subDeviceName)
103 def find_subid(self, subven, subdev):
104 subven = hex(subven)[2:]
105 subdev = hex(subdev)[2:]
106 devid = "%s:%s" % (subven, subdev)
109 return self.subdevices[devid]
111 if (subven == "ffff" and subdev == "ffff"):
112 return SubDevice("ffff", "ffff", "(All Subdevices)")
114 return SubDevice(subven, subdev, "(Unknown Subdevice)")
119 Class for subdevices.
122 def __init__(self, vendor, device, name):
124 Class initializes with vendorid, deviceid and name
126 self.vendorID = vendor
127 self.deviceID = device
131 print("\t\t%s\t%s\t%s" % (self.vendorID, self.deviceID, self.name))
136 Top class for all pci.ids entries.
137 All queries will be asked to this class.
138 PCIIds.vendors["0e11"].devices["0046"].\
139 subdevices["0e11:4091"].name = "Smart Array 6i"
142 def __init__(self, filename):
144 Prepares the directories.
145 Checks local data file.
146 Tries to load from local, if not found, downloads from web
152 self.readLocal(filename)
155 def reportVendors(self):
156 """Reports the vendors
158 for vid, v in self.vendors.items():
161 def report(self, vendor=None):
163 Reports everything for all vendors or a specific vendor
164 PCIIds.report() reports everything
165 PCIIDs.report("0e11") reports only "Compaq Computer Corporation"
167 if vendor is not None:
168 self.vendors[vendor].report()
170 for vID, v in self.vendors.items():
173 def find_vendor(self, vid):
174 # convert vid to a hex string and remove the 0x
178 return self.vendors[vid]
180 return Vendor("%s Unknown Vendor" % (vid))
182 def findDate(self, content):
184 if l.find("Date:") > -1:
185 return l.split()[-2].replace("-", "")
189 if len(self.contents) < 1:
190 print("data/%s-pci.ids not found" % self.date)
194 for l in self.contents:
197 elif len(l.strip()) == 0:
200 if l.find("\t\t") == 0:
201 self.vendors[vendorID].devices[
202 deviceID].addSubDevice(l)
203 elif l.find("\t") == 0:
204 deviceID = l.strip().split()[0]
205 self.vendors[vendorID].addDevice(l)
207 vendorID = l.split()[0]
208 self.vendors[vendorID] = Vendor(l)
210 def readLocal(self, filename):
214 self.contents = open(filename).readlines()
215 self.date = self.findDate(self.contents)
219 Loads database from local. If there is no file,
220 it creates a new one from web
222 self.date = idsfile[0].split("/")[1].split("-")[0]
226 # =======================================
228 def search_file(filename, search_path):
229 """ Given a search path, find file with requested name """
230 for path in string.split(search_path, ":"):
231 candidate = os.path.join(path, filename)
232 if os.path.exists(candidate):
233 return os.path.abspath(candidate)
237 class ReadElf(object):
238 """ display_* methods are used to emit output into the output stream
241 def __init__(self, file, output):
243 stream object with the ELF file to read
246 output stream to write to
248 self.elffile = ELFFile(file)
251 # Lazily initialized if a debug dump is requested
252 self._dwarfinfo = None
254 self._versioninfo = None
256 def _section_from_spec(self, spec):
257 """ Retrieve a section given a "spec" (either number or name).
258 Return None if no such section exists in the file.
262 if num < self.elffile.num_sections():
263 return self.elffile.get_section(num)
267 # Not a number. Must be a name then
268 return self.elffile.get_section_by_name(str2bytes(spec))
270 def pretty_print_pmdinfo(self, pmdinfo):
273 for i in pmdinfo["pci_ids"]:
274 vendor = pcidb.find_vendor(i[0])
275 device = vendor.find_device(i[1])
276 subdev = device.find_subid(i[2], i[3])
277 print("%s (%s) : %s (%s) %s" %
278 (vendor.name, vendor.ID, device.name,
279 device.ID, subdev.name))
281 def parse_pmd_info_string(self, mystring):
285 optional_pmd_info = [
286 {'id': 'params', 'tag': 'PMD PARAMETERS'},
287 {'id': 'kmod', 'tag': 'PMD KMOD DEPENDENCIES'}
290 i = mystring.index("=")
291 mystring = mystring[i + 2:]
292 pmdinfo = json.loads(mystring)
295 print(json.dumps(pmdinfo))
298 print("PMD NAME: " + pmdinfo["name"])
299 for i in optional_pmd_info:
301 print("%s: %s" % (i['tag'], pmdinfo[i['id']]))
305 if (len(pmdinfo["pci_ids"]) != 0):
306 print("PMD HW SUPPORT:")
307 if pcidb is not None:
308 self.pretty_print_pmdinfo(pmdinfo)
310 print("VENDOR\t DEVICE\t SUBVENDOR\t SUBDEVICE")
311 for i in pmdinfo["pci_ids"]:
312 print("0x%04x\t 0x%04x\t 0x%04x\t\t 0x%04x" %
313 (i[0], i[1], i[2], i[3]))
317 def display_pmd_info_strings(self, section_spec):
318 """ Display a strings dump of a section. section_spec is either a
319 section number or a name.
321 section = self._section_from_spec(section_spec)
325 data = section.data()
328 while dataptr < len(data):
329 while (dataptr < len(data) and
330 not (32 <= byte2int(data[dataptr]) <= 127)):
333 if dataptr >= len(data):
337 while endptr < len(data) and byte2int(data[endptr]) != 0:
340 mystring = bytes2str(data[dataptr:endptr])
341 rc = mystring.find("PMD_INFO_STRING")
343 self.parse_pmd_info_string(mystring)
347 def find_librte_eal(self, section):
348 for tag in section.iter_tags():
349 if tag.entry.d_tag == 'DT_NEEDED':
350 if "librte_eal" in tag.needed:
354 def search_for_autoload_path(self):
359 section = self._section_from_spec(".dynamic")
361 eallib = self.find_librte_eal(section)
362 if eallib is not None:
363 ldlibpath = os.environ.get('LD_LIBRARY_PATH')
364 if ldlibpath is None:
366 dtr = self.get_dt_runpath(section)
367 library = search_file(eallib,
368 dtr + ":" + ldlibpath +
369 ":/usr/lib64:/lib64:/usr/lib:/lib")
372 if raw_output is False:
373 print("Scanning for autoload path in %s" % library)
374 scanfile = open(library, 'rb')
375 scanelf = ReadElf(scanfile, sys.stdout)
376 except AttributeError:
377 # Not a dynamic binary
383 section = scanelf._section_from_spec(".rodata")
385 if scanfile is not None:
389 data = section.data()
392 while dataptr < len(data):
393 while (dataptr < len(data) and
394 not (32 <= byte2int(data[dataptr]) <= 127)):
397 if dataptr >= len(data):
401 while endptr < len(data) and byte2int(data[endptr]) != 0:
404 mystring = bytes2str(data[dataptr:endptr])
405 rc = mystring.find("DPDK_PLUGIN_PATH")
407 rc = mystring.find("=")
408 return (mystring[rc + 1:], library)
411 if scanfile is not None:
415 def get_dt_runpath(self, dynsec):
416 for tag in dynsec.iter_tags():
417 if tag.entry.d_tag == 'DT_RUNPATH':
421 def process_dt_needed_entries(self):
422 """ Look to see if there are any DT_NEEDED entries in the binary
423 And process those if there are
427 ldlibpath = os.environ.get('LD_LIBRARY_PATH')
428 if ldlibpath is None:
431 dynsec = self._section_from_spec(".dynamic")
433 runpath = self.get_dt_runpath(dynsec)
434 except AttributeError:
435 # dynsec is None, just return
438 for tag in dynsec.iter_tags():
439 if tag.entry.d_tag == 'DT_NEEDED':
440 rc = tag.needed.find(b"librte_pmd")
442 library = search_file(tag.needed,
443 runpath + ":" + ldlibpath +
444 ":/usr/lib64:/lib64:/usr/lib:/lib")
445 if library is not None:
446 if raw_output is False:
447 print("Scanning %s for pmd information" % library)
448 with open(library, 'rb') as file:
450 libelf = ReadElf(file, sys.stdout)
452 print("%s is no an ELF file" % library)
454 libelf.process_dt_needed_entries()
455 libelf.display_pmd_info_strings(".rodata")
459 def scan_autoload_path(autoload_path):
462 if os.path.exists(autoload_path) is False:
466 dirs = os.listdir(autoload_path)
468 # Couldn't read the directory, give up
472 dpath = os.path.join(autoload_path, d)
473 if os.path.isdir(dpath):
474 scan_autoload_path(dpath)
475 if os.path.isfile(dpath):
477 file = open(dpath, 'rb')
478 readelf = ReadElf(file, sys.stdout)
480 # this is likely not an elf file, skip it
483 # No permission to read the file, skip it
486 if raw_output is False:
487 print("Hw Support for library %s" % d)
488 readelf.display_pmd_info_strings(".rodata")
492 def scan_for_autoload_pmds(dpdk_path):
494 search the specified application or path for a pmd autoload path
495 then scan said path for pmds and report hw support
499 if (os.path.isfile(dpdk_path) is False):
500 if raw_output is False:
501 print("Must specify a file name")
504 file = open(dpdk_path, 'rb')
506 readelf = ReadElf(file, sys.stdout)
508 if raw_output is False:
509 print("Unable to parse %s" % file)
512 (autoload_path, scannedfile) = readelf.search_for_autoload_path()
513 if (autoload_path is None or autoload_path is ""):
514 if (raw_output is False):
515 print("No autoload path configured in %s" % dpdk_path)
517 if (raw_output is False):
518 if (scannedfile is None):
519 scannedfile = dpdk_path
520 print("Found autoload path %s in %s" % (autoload_path, scannedfile))
523 if (raw_output is False):
524 print("Discovered Autoload HW Support:")
525 scan_autoload_path(autoload_path)
529 def main(stream=None):
533 pcifile_default = "./pci.ids" # For unknown OS's assume local file
534 if platform.system() == 'Linux':
535 pcifile_default = "/usr/share/hwdata/pci.ids"
536 elif platform.system() == 'FreeBSD':
537 pcifile_default = "/usr/local/share/pciids/pci.ids"
538 if not os.path.exists(pcifile_default):
539 pcifile_default = "/usr/share/misc/pci_vendors"
541 optparser = OptionParser(
542 usage='usage: %prog [-hrtp] [-d <pci id file] <elf-file>',
543 description="Dump pmd hardware support info",
544 add_help_option=True)
545 optparser.add_option('-r', '--raw',
546 action='store_true', dest='raw_output',
547 help='Dump raw json strings')
548 optparser.add_option("-d", "--pcidb", dest="pcifile",
549 help="specify a pci database "
550 "to get vendor names from",
551 default=pcifile_default, metavar="FILE")
552 optparser.add_option("-t", "--table", dest="tblout",
553 help="output information on hw support as a "
556 optparser.add_option("-p", "--plugindir", dest="pdir",
557 help="scan dpdk for autoload plugins",
560 options, args = optparser.parse_args()
562 if options.raw_output:
566 pcidb = PCIIds(options.pcifile)
568 print("Pci DB file not found")
572 options.pcifile = None
576 optparser.print_usage()
579 if options.pdir is True:
580 exit(scan_for_autoload_pmds(args[0]))
582 ldlibpath = os.environ.get('LD_LIBRARY_PATH')
583 if (ldlibpath is None):
586 if (os.path.exists(args[0]) is True):
589 myelffile = search_file(
590 args[0], ldlibpath + ":/usr/lib64:/lib64:/usr/lib:/lib")
592 if (myelffile is None):
593 print("File not found")
596 with open(myelffile, 'rb') as file:
598 readelf = ReadElf(file, sys.stdout)
599 readelf.process_dt_needed_entries()
600 readelf.display_pmd_info_strings(".rodata")
603 except ELFError as ex:
604 sys.stderr.write('ELF error: %s\n' % ex)
608 # -------------------------------------------------------------------------
609 if __name__ == '__main__':