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tools: fix binding to unsupported driver

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The dpdk_nic_bind script will not allow ports to be bound or unbound if none of the
kernel modules supported by DPDK is loaded. This patch relaxes this restriction by
checking if a DPDK module is actually requested. The example below illustrates this
problem:

In virtio test, on the guest
1. Bind virtio port to igb_uio driver;
2. Remove igb_uio module;
3. Bind virtio port to virtio-pci driver, it fails and reports:
   "Error - no supported modules are loaded"

The script should check the to-be-bound driver flag, if it is dpdk driver(igb_uio, vfio etc),
and the corresponding module is not loaded, then exit, otherwise, just report a warning,
and continue to bind the non-dpdk driver(like virtio-pci) to dev.

Signed-off-by: Changchun Ouyang <changchun.ouyang@intel.com>
Tested-by: Qian Xu <qian.q.xu@intel.com>
Acked-by: Michael Qiu <michael.qiu@intel.com>
This commit is contained in:
Ouyang Changchun 2015-03-04 10:55:35 +08:00 committed by Thomas Monjalon
parent d8b8517893
commit 92ff8cf229
1 changed files with 5 additions and 2 deletions
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7
tools/dpdk_nic_bind.py
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@ -175,8 +175,11 @@ def check_modules():
# check if we have at least one loaded module
if True not in [mod["Found"] for mod in mods] and b_flag is not None:
print "Error - no supported modules are loaded"
sys.exit(1)
if b_flag in dpdk_drivers:
print "Error - no supported modules(DPDK driver) are loaded"
sys.exit(1)
else:
print "Warning - no supported modules(DPDK driver) are loaded"
# change DPDK driver list to only contain drivers that are loaded
dpdk_drivers = [mod["Name"] for mod in mods if mod["Found"]]