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Decode bytes before running string operations on the same #85

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@rohit-mundra rohit-mundra commented Mar 5, 2024

Post execution of grep on vlan information for interface and when tc tool is executed get qdisc information for the device, the bytes must be converted to string to run split and regex.

resolve: #84

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Looks good to me. This would uncover in certain conditions where vlan is enabled. Otherwise code path is not exercised.

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The code change resolves #84 impacting Socket Priority to User Priority mapping for a parent PF device of the VLAN device.

@rohit-mundra rohit-mundra force-pushed the py3_tc_wrap_issue84 branch from c71b0d1 to fb4c658 Compare March 7, 2024 23:31
@tzafrir-mellanox
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When removing spaces, you also removed useful spaces. Please fix that.

@rohit-mundra
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rohit-mundra commented Mar 20, 2024

When removing spaces, you also removed useful spaces. Please fix that.

Not able to find which space I have removed, as I have added just the decode calls to line variable.

[rohit.mundra@rohit-mundra mlnx-tools]$ git diff HEAD~2

diff --git a/python/tc_wrap.py b/python/tc_wrap.py
index b6fbe5e..54180bc 100755
--- a/python/tc_wrap.py
+++ b/python/tc_wrap.py
@@ -53,7 +53,7 @@ class skprio2up:
                                "* 2> /dev/null", shell=True, bufsize=4096,
                                stdout=PIPE).stdout
                for line in output:
-                       param, val=line.strip().split(":", 1)
+                       param, val=line.decode("utf-8").strip().split(":", 1)
                        vlan = param.split('.')[-1]
                        for item in val.split(":", 1)[1].split():
                                skprio, up = item.split(':')
@@ -150,7 +150,7 @@ class tcnum_mqprio(tcnum):

                for line in output:
                        empty=False
-                       m = re.search(r'tc (\d)', line)
+                       m = re.search(r'tc (\d)', line.decode("utf-8"))
                        if m:
                                self.tc_num = m.group(1)

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tc_wrap.py is failing due to use of string operation on bytes object
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