fix error when use exclude port in tc

[xlgao-zju]

Signed-off-by: Xianglin Gao xianglingao@tencent.com

Describe what this PR does / why we need it

When I run network loss experiment with exclude port. I find following log:

time="2023-02-01 11:15:24.317567738 CST" level=debug msg="Command Result, output: /bin/sh: line 4: ,: command not found\n/bin/sh: line 6: ,: command not found\n/bin/sh: line 8: ,: command not found\n/bin/sh: line 10: ,: command not found\n/bin/sh: line 12: ,: command not found\n/bin/sh: line 14: ,: command not found\n/bin/sh: line 16: ,: command not found\n, err: <nil>"

When I look at the code, I found out an extra , in

chaosblade-exec-os/exec/network/tc/network_tc.go

Line 197 in e2893ec

tc filter add dev %s parent 1: prio 4 protocol ip u32 match ip dport %s 0xffff flowid 1:4 && \,

After I remove the ,, it worked fine.

Does this pull request fix one issue?

Describe how you did it

Remove the ,

Describe how to verify it

Run network loss experiment with exclude ports, and it worked fine.

Special notes for reviews