Re: [PATCH v4] app/testpmd: fix slave device isn't released

[Dongdong Liu <liudongdong3@huawei.com>]

Hi Ferruh

Many thanks for your review.
On 2022/6/7 22:31, Ferruh Yigit wrote:
> On 6/7/2022 9:10 AM, Dongdong Liu wrote:
>> From: Huisong Li <lihuisong@huawei.com>
>>
>> Currently, some eth devices are added to bond device, these devices
>> are not
>> released when the quit command is executed in testpmd. This patch adds
>> the
>> release operation for all active slaves under a bond device.
>>
>> Fixes: 0e545d3047fe ("app/testpmd: check stopping port is not in
>> bonding")
>> Cc: stable@dpdk.org
>>
>> Signed-off-by: Huisong Li <lihuisong@huawei.com>
>> Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
>> Signed-off-by: Dongdong Liu <liudongdong3@huawei.com>
>> ---
>>   app/test-pmd/cmdline.c |  1 +
>>   app/test-pmd/testpmd.c | 46 ++++++++++++++++++++++++++++++++++++++++++
>>   app/test-pmd/testpmd.h |  2 ++
>>   3 files changed, 49 insertions(+)
>>
>> diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c
>> index fdd0cada3b..6c58b02650 100644
>> --- a/app/test-pmd/cmdline.c
>> +++ b/app/test-pmd/cmdline.c
>> @@ -8915,6 +8915,7 @@ static void cmd_quit_parsed(__rte_unused void
>> *parsed_result,
>>                   __rte_unused void *data)
>>   {
>>       cmdline_quit(cl);
>> +    cl_quit = 1;
>>   }
>>     static cmdline_parse_token_string_t cmd_quit_quit =
>> diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
>> index fc1b64b60d..2b16551a26 100644
>> --- a/app/test-pmd/testpmd.c
>> +++ b/app/test-pmd/testpmd.c
>> @@ -229,6 +229,7 @@ unsigned int xstats_display_num; /**< Size of
>> extended statistics to show */
>>    * option. Set flag to exit stats period loop after received
>> SIGINT/SIGTERM.
>>    */
>>   uint8_t f_quit;
>> +uint8_t cl_quit; /* Quit testpmd from cmdline. */
>>     /*
>>    * Max Rx frame size, set by '--max-pkt-len' parameter.
>> @@ -3201,11 +3202,44 @@ remove_invalid_ports(void)
>>       nb_cfg_ports = nb_fwd_ports;
>>   }
>>   +static void
>> +clear_bonding_slave_device(portid_t *slave_pids, uint16_t num_slaves)
>> +{
>> +#ifdef RTE_NET_BOND
>> +    struct rte_port *port;
>> +    portid_t slave_pid;
>> +    uint16_t i;
>> +
>> +    for (i = 0; i < num_slaves; i++) {
>> +        slave_pid = slave_pids[i];
>> +        if (port_is_started(slave_pid) == 1) {
>> +            if (rte_eth_dev_stop(slave_pid) != 0)
>> +                fprintf(stderr, "rte_eth_dev_stop failed for port %u\n",
>> +                    slave_pid);
>> +
>> +            port = &ports[slave_pid];
>> +            port->port_status = RTE_PORT_STOPPED;
>> +        }
>> +
>> +        clear_port_slave_flag(slave_pid);
>> +
>> +        /* Close slave device when testpmd quit or is killed. */
>> +        if (cl_quit == 1 || f_quit == 1)
>> +            rte_eth_dev_close(slave_pid);
>> +    }
>> +#else
>> +    RTE_SET_USED(slave_pids);
>> +    RTE_SET_USED(num_slaves);
>> +#endif
>
> Do we need this #ifdef, everything is already available in compile time.

Although it can be compiled ok without this #ifdef,
I think we still need this #ifdef as this is bond related
implementation.

This patch does the similar #ifdef grouping done in 3/5 patch.

Thanks,
Dongdong
>
>> +}
>> +
>>   void
>>   close_port(portid_t pid)
>>   {
>>       portid_t pi;
>>       struct rte_port *port;
>> +    portid_t slave_pids[RTE_MAX_ETHPORTS];
>> +    int num_slaves = 0;
>>         if (port_id_is_invalid(pid, ENABLED_WARN))
>>           return;
>> @@ -3240,7 +3274,19 @@ close_port(portid_t pid)
>>               port_flow_flush(pi);
>>               port_flex_item_flush(pi);
>>               port_action_handle_flush(pi);
>> +#ifdef RTE_NET_BOND
>> +            if (port->bond_flag == 1)
>> +                num_slaves = rte_eth_bond_slaves_get(pi,
>> +                        slave_pids, RTE_MAX_ETHPORTS);
>> +#endif
>>               rte_eth_dev_close(pi);
>> +            /*
>> +            * If this port is bonded device, all slaves under the
>> +            * device need to be removed or closed.
>> +            */
>> +            if (port->bond_flag == 1 && num_slaves > 0)
>> +                clear_bonding_slave_device(slave_pids,
>> +                            num_slaves);
>>           }
>>             free_xstats_display_info(pi);
>> diff --git a/app/test-pmd/testpmd.h b/app/test-pmd/testpmd.h
>> index 6693813dda..b44d5dd5ac 100644
>> --- a/app/test-pmd/testpmd.h
>> +++ b/app/test-pmd/testpmd.h
>> @@ -38,6 +38,8 @@
>>   #define RTE_PORT_CLOSED         (uint16_t)2
>>   #define RTE_PORT_HANDLING       (uint16_t)3
>>   +extern uint8_t cl_quit;
>> +
>>   /*
>>    * It is used to allocate the memory for hash key.
>>    * The hash key size is NIC dependent.
>
> .
>