[dts] [PATCH] tests/pmd_bonded: stop forwarding before removing slaves

[Tu, Lijuan]

Applied, thanks

> -----Original Message-----
> From: dts [mailto:dts-bounces at dpdk.org] On Behalf Of Hyong Youb Kim
> Sent: Thursday, January 10, 2019 2:25 PM
> To: Liu, Yong <yong.liu at intel.com>
> Cc: dts at dpdk.org; Hyong Youb Kim <hyonkim at cisco.com>
> Subject: [dts] [PATCH] tests/pmd_bonded: stop forwarding before removing
> slaves
> 
> Currently, test_bound_promisc_opt often crashes when it tries to remove all
> slave ports from the bonding driver. The main thread removes slave ports while
> forwarding threads are still executing rx_burst on them. These threads share
> data structures within the bonding driver and cause races, which lead to crashes.
> So explicitly stop the forwarding threads first, and then remove slave ports.
> 
> Signed-off-by: Hyong Youb Kim <hyonkim at cisco.com>
> ---
>  tests/TestSuite_pmd_bonded.py | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/tests/TestSuite_pmd_bonded.py b/tests/TestSuite_pmd_bonded.py
> index a770b9b..928c53a 100644
> --- a/tests/TestSuite_pmd_bonded.py
> +++ b/tests/TestSuite_pmd_bonded.py
> @@ -1031,6 +1031,9 @@ UDP(sport=srcport,
> dport=destport)/Raw(load="\x50"*%s)], iface="%s", count=%d)'
>                          pkt_now[bond_port][0] == pkt_count,
>                          "RX or TX packet number not correct when promiscuous disabled")
> 
> +        # Stop fwd threads first before removing slaves from bond to avoid
> +        # races and crashes
> +        self.dut.send_expect("stop", "testpmd> ")
>          self.remove_all_slaves(bond_port)
>          self.dut.send_expect("quit", "# ")
>          self.launch_app()
> --
> 2.16.2