Re: [PATCH v3 3/5] app/testpmd: fix port status of slave device

["Min Hu (Connor)" <humin29@huawei.com>]

Hi, Konstantin,

在 2022/5/4 7:39, Konstantin Ananyev 写道:
> 03/05/2022 11:02, Min Hu (Connor) пишет:
>> From: Huisong Li <lihuisong@huawei.com>
>>
>> Starting or stopping a bonded port also starts or stops all active slaves
>> under the bonded port. If this port is a bonded device, we need to modify
>> the port status of all slaves.
>>
>> 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>
>> Acked-by: Aman Singh <aman.deep.singh@intel.com>
>> ---
>>   app/test-pmd/cmdline.c |  1 +
>>   app/test-pmd/testpmd.c | 74 +++++++++++++++++++++++++++++++++++++++---
>>   app/test-pmd/testpmd.h |  3 +-
>>   3 files changed, 73 insertions(+), 5 deletions(-)
>>
>> diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c
>> index 6ffea8e21a..d9fc7a88bd 100644
>> --- a/app/test-pmd/cmdline.c
>> +++ b/app/test-pmd/cmdline.c
>> @@ -6671,6 +6671,7 @@ static void cmd_create_bonded_device_parsed(void 
>> *parsed_result,
>>                   "Failed to enable promiscuous mode for port %u: %s - 
>> ignore\n",
>>                   port_id, rte_strerror(-ret));
>> +        ports[port_id].bond_flag = 1;
>>           ports[port_id].need_setup = 0;
>>           ports[port_id].port_status = RTE_PORT_STOPPED;
>>       }
>> diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
>> index fe2ce19f99..dc90600787 100644
>> --- a/app/test-pmd/testpmd.c
>> +++ b/app/test-pmd/testpmd.c
>> @@ -66,6 +66,9 @@
>>   #ifdef RTE_EXEC_ENV_WINDOWS
>>   #include <process.h>
>>   #endif
>> +#ifdef RTE_NET_BOND
>> +#include <rte_eth_bond.h>
>> +#endif
>>   #include "testpmd.h"
>> @@ -597,11 +600,57 @@ eth_dev_configure_mp(uint16_t port_id, uint16_t 
>> nb_rx_q, uint16_t nb_tx_q,
>>       return 0;
>>   }
>> +#ifdef RTE_NET_BOND
>> +static int
>> +change_bonding_slave_port_status(portid_t bond_pid, bool is_stop)
>> +{
>> +    portid_t slave_pids[RTE_MAX_ETHPORTS];
>> +    struct rte_port *port;
>> +    int num_slaves;
>> +    portid_t slave_pid;
>> +    int i;
>> +
>> +    num_slaves = rte_eth_bond_slaves_get(bond_pid, slave_pids,
>> +                        RTE_MAX_ETHPORTS);
>> +    if (num_slaves < 0) {
>> +        fprintf(stderr, "Failed to get slave list for port = %u\n",
>> +            bond_pid);
>> +        return num_slaves;
>> +    }
>> +
>> +    for (i = 0; i < num_slaves; i++) {
>> +        slave_pid = slave_pids[i];
>> +        port = &ports[slave_pid];
>> +        port->port_status =
>> +            is_stop ? RTE_PORT_STOPPED : RTE_PORT_STARTED;
>> +    }
>> +
>> +    return 0;
>> +}
>> +#endif
>> +
>>   static int
>>   eth_dev_start_mp(uint16_t port_id)
>>   {
>> -    if (is_proc_primary())
>> -        return rte_eth_dev_start(port_id);
>> +    int ret;
>> +
>> +    if (is_proc_primary()) {
>> +        ret = rte_eth_dev_start(port_id);
>> +        if (ret != 0)
>> +            return ret;
>> +
>> +#ifdef RTE_NET_BOND
>> +        struct rte_port *port = &ports[port_id];
>> +
>> +        /*
>> +         * Starting a bonded port also starts all slaves under the 
>> bonded
>> +         * device. So if this port is bond device, we need to modify the
>> +         * port status of these slaves.
>> +         */
>> +        if (port->bond_flag == 1)
>> +            return change_bonding_slave_port_status(port_id, false);
>> +#endif
>> +    }
>>       return 0;
>>   }
>> @@ -609,8 +658,25 @@ eth_dev_start_mp(uint16_t port_id)
>>   static int
>>   eth_dev_stop_mp(uint16_t port_id)
>>   {
>> -    if (is_proc_primary())
>> -        return rte_eth_dev_stop(port_id);
>> +    int ret;
>> +
>> +    if (is_proc_primary()) {
>> +        ret = rte_eth_dev_stop(port_id);
>> +        if (ret != 0)
>> +            return ret;
>> +
>> +#ifdef RTE_NET_BOND
> 
> Here and in other places - probably no need to pollute the code
> with all these 'ifdef RTE_NET_BOND'.
> I suppose this logic (for checking is bonding API present or not)
> can be hidden inside change_bonding_slave_port_status() itself.
> 
I think it does not pollute the code. anyone can tell according to
the flag 'ifdef RTE_NET_BOND'.
if hiddle inside 'change_bonding_slave_port_status', it will be weird.
For example, if the port is not bonding port, It will also invoke 
'change_bonding_slave_port_status'. That is unreasonable.


> 
>> +        struct rte_port *port = &ports[port_id];
>> +
>> +        /*
>> +         * Stopping a bonded port also stops all slaves under the bonded
>> +         * device. So if this port is bond device, we need to modify the
>> +         * port status of these slaves.
>> +         */
>> +        if (port->bond_flag == 1)
>> +            return change_bonding_slave_port_status(port_id, true);
>> +#endif
>> +    }
>>       return 0;
>>   }
>> diff --git a/app/test-pmd/testpmd.h b/app/test-pmd/testpmd.h
>> index 31f766c965..67f253b30e 100644
>> --- a/app/test-pmd/testpmd.h
>> +++ b/app/test-pmd/testpmd.h
>> @@ -266,7 +266,8 @@ struct rte_port {
>>       uint32_t                mc_addr_nb; /**< nb. of addr. in 
>> mc_addr_pool */
>>       queueid_t               queue_nb; /**< nb. of queues for flow 
>> rules */
>>       uint32_t                queue_sz; /**< size of a queue for flow 
>> rules */
>> -    uint8_t                 slave_flag; /**< bonding slave port */
>> +    uint8_t                 slave_flag : 1, /**< bonding slave port */
>> +                bond_flag : 1; /**< port is bond device */
>>       struct port_template    *pattern_templ_list; /**< Pattern 
>> templates. */
>>       struct port_template    *actions_templ_list; /**< Actions 
>> templates. */
>>       struct port_table       *table_list; /**< Flow tables. */
> 
> .