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patches dpdk_nic_bind.py #3

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patches dpdk_nic_bind.py #3

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55 changes: 41 additions & 14 deletions scripts/dpdk_nic_bind.py
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Original file line number Diff line number Diff line change
Expand Up @@ -223,6 +223,13 @@ def get_loaded_modules():
loaded_mods = fd.readlines()
for line in loaded_mods:
loaded_modules.append(line.split()[0])

with open("/usr/lib/modules/%s/modules.builtin" % kernel_ver) as builtin:
builtin_mods = builtin.readlines()
for builtin_line in builtin_mods:
if "vfio-pci" in builtin_line:
loaded_modules.append("vfio-pci")

return loaded_modules

def check_modules():
Expand Down Expand Up @@ -666,19 +673,37 @@ def bind_one(dev_id, driver, force):

# if we are binding to one of DPDK drivers, add PCI id's to that driver
if driver in dpdk_drivers:
filename = "/sys/bus/pci/drivers/%s/new_id" % driver
try:
f = open(filename, "w")
except:
print("Error: bind failed for %s - Cannot open %s" % (dev_id, filename))
return
try:
f.write("%04x %04x" % (dev["Vendor"], dev["Device"]))
f.close()
except:
print("Error: bind failed for %s - Cannot write new PCI ID to " \
"driver %s" % (dev_id, driver))
return
filename = "/sys/bus/pci/devices/%s/driver_override" % dev_id
if exists(filename):
try:
f = open(filename, "w")
except OSError as err:
print("Error: bind failed for %s - Cannot open %s: %s"
% (dev_id, filename, err))
return
try:
f.write("%s" % driver)
f.close()
except OSError as err:
print("Error: bind failed for %s - Cannot write driver %s to "
"PCI ID: %s" % (dev_id, driver, err))
return
else:
filename = "/sys/bus/pci/drivers/%s/new_id" % driver
try:
f = open(filename, "w")
except:
print("Error: bind failed for %s - Cannot open %s" % (dev_id, filename))
return
try:
val = "%04x %04x" % (dev["Vendor"], dev["Device"])
print("Writing %s to %s." % (val, filename))
f.write(val)
f.close()
except OSError as err:
print("Error: bind failed for %s - Cannot write new PCI ID to " \
"driver %s: %s" % (dev_id, driver, err))
return

# do the bind by writing to /sys
filename = "/sys/bus/pci/drivers/%s/bind" % driver
Expand All @@ -690,10 +715,12 @@ def bind_one(dev_id, driver, force):
bind_one(dev_id, saved_driver, force)
return
try:
print("Writing %s to %s." % (dev_id, filename))
f.write(dev_id)
f.close()
return True
except:
except OSError as ioex:
print(ioex)
# for some reason, closing dev_id after adding a new PCI ID to new_id
# results in IOError. however, if the device was successfully bound,
# we don't care for any errors and can safely ignore IOError
Expand Down