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The 'tc actions' subcommand has a problem:
# tc actions add action pedit munge ip sport set 666
# tc actions list action pedit
action order 0: pedit action pass keys 1
index 1 ref 1 bind 0
key #0 at 20: val 029a0000 mask 0000ffff
# tc actions del action pedit index 1
<does not return>
This is fixed by a recent upstream commit:
commit 83cf5bc73b858608d59c3c6126a9f37e793e15dd
Author: Chris Mi <chrism>
Date: Thu Dec 14 18:09:00 2017 +0900
tc: fix command "tc actions del" hang issue
If command is RTM_DELACTION, a non-NULL pointer is passed to rtnl_talk().
Then flag NLM_F_ACK is not set on n->nlmsg_flags and netlink_ack() will
not be called. Command tc will wait for the reply for ever.
Fixes: 86bf43c7c2fd ("lib/libnetlink: update rtnl_talk to support malloc buff at run time")
Reviewed-by: Jiri Pirko <jiri>
Signed-off-by: Chris Mi <chrism>
Signed-off-by: Stephen Hemminger <stephen>
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHEA-2018:0815
The 'tc actions' subcommand has a problem: # tc actions add action pedit munge ip sport set 666 # tc actions list action pedit action order 0: pedit action pass keys 1 index 1 ref 1 bind 0 key #0 at 20: val 029a0000 mask 0000ffff # tc actions del action pedit index 1 <does not return> This is fixed by a recent upstream commit: commit 83cf5bc73b858608d59c3c6126a9f37e793e15dd Author: Chris Mi <chrism> Date: Thu Dec 14 18:09:00 2017 +0900 tc: fix command "tc actions del" hang issue If command is RTM_DELACTION, a non-NULL pointer is passed to rtnl_talk(). Then flag NLM_F_ACK is not set on n->nlmsg_flags and netlink_ack() will not be called. Command tc will wait for the reply for ever. Fixes: 86bf43c7c2fd ("lib/libnetlink: update rtnl_talk to support malloc buff at run time") Reviewed-by: Jiri Pirko <jiri> Signed-off-by: Chris Mi <chrism> Signed-off-by: Stephen Hemminger <stephen>