Re: [dpdk-dev] [EXT] RE: [PATCH v3 13/13] examples/ipsec-secgw: make number of buffers dynamic

[Lukas Bartosik <lbartosik@marvell.com>]

Hi Konstantin,

Please see inline.

Thanks,
Lukasz

On 05.02.2020 14:42, Ananyev, Konstantin wrote:
> External Email
> 
> ----------------------------------------------------------------------
> 
> Hi Lukasz,
>  
>> Make number of buffers in a pool nb_mbuf_in_pool dependent on number
>> of ports, cores and crypto queues. Add command line option -s which
>> when used overrides dynamic calculation of number of buffers in a pool.
>>
>> Signed-off-by: Anoob Joseph <anoobj@marvell.com>
>> Signed-off-by: Lukasz Bartosik <lbartosik@marvell.com>
>> ---
>>  examples/ipsec-secgw/ipsec-secgw.c | 59 +++++++++++++++++++++++++++++++-------
>>  1 file changed, 48 insertions(+), 11 deletions(-)
>>
>> diff --git a/examples/ipsec-secgw/ipsec-secgw.c b/examples/ipsec-secgw/ipsec-secgw.c
>> index 862a7f0..f7acb52 100644
>> --- a/examples/ipsec-secgw/ipsec-secgw.c
>> +++ b/examples/ipsec-secgw/ipsec-secgw.c
>> @@ -59,8 +59,6 @@ volatile bool force_quit;
>>
>>  #define MEMPOOL_CACHE_SIZE 256
>>
>> -#define NB_MBUF	(32000)
>> -
>>  #define CDEV_QUEUE_DESC 2048
>>  #define CDEV_MAP_ENTRIES 16384
>>  #define CDEV_MP_NB_OBJS 1024
>> @@ -163,6 +161,7 @@ static int32_t promiscuous_on = 1;
>>  static int32_t numa_on = 1; /**< NUMA is enabled by default. */
>>  static uint32_t nb_lcores;
>>  static uint32_t single_sa;
>> +static uint32_t nb_bufs_in_pool;
>>
>>  /*
>>   * RX/TX HW offload capabilities to enable/use on ethernet ports.
>> @@ -1259,6 +1258,7 @@ print_usage(const char *prgname)
>>  		" [-w REPLAY_WINDOW_SIZE]"
>>  		" [-e]"
>>  		" [-a]"
>> +		" [-s NUMBER_OF_MBUFS_IN_PKT_POOL]"
>>  		" -f CONFIG_FILE"
>>  		" --config (port,queue,lcore)[,(port,queue,lcore)]"
>>  		" [--single-sa SAIDX]"
>> @@ -1280,6 +1280,7 @@ print_usage(const char *prgname)
>>  		"     size for each SA\n"
>>  		"  -e enables ESN\n"
>>  		"  -a enables SA SQN atomic behaviour\n"
>> +		"  -s number of mbufs in packet pool (default 8192)\n"
>>  		"  -f CONFIG_FILE: Configuration file\n"
>>  		"  --config (port,queue,lcore): Rx queue configuration\n"
>>  		"  --single-sa SAIDX: In poll mode use single SA index for\n"
>> @@ -1479,7 +1480,7 @@ parse_args(int32_t argc, char **argv, struct eh_conf *eh_conf)
>>
>>  	argvopt = argv;
>>
>> -	while ((opt = getopt_long(argc, argvopt, "aelp:Pu:f:j:w:",
>> +	while ((opt = getopt_long(argc, argvopt, "aelp:Pu:f:j:w:s:",
>>  				lgopts, &option_index)) != EOF) {
>>
>>  		switch (opt) {
>> @@ -1513,6 +1514,19 @@ parse_args(int32_t argc, char **argv, struct eh_conf *eh_conf)
>>  			cfgfile = optarg;
>>  			f_present = 1;
>>  			break;
>> +
>> +		case 's':
>> +			ret = parse_decimal(optarg);
>> +			if (ret < 0) {
>> +				printf("Invalid number of buffers in a pool: "
>> +					"%s\n", optarg);
>> +				print_usage(prgname);
>> +				return -1;
>> +			}
>> +
>> +			nb_bufs_in_pool = ret;
>> +			break;
>> +
>>  		case 'j':
>>  			ret = parse_decimal(optarg);
>>  			if (ret < RTE_MBUF_DEFAULT_BUF_SIZE ||
>> @@ -1876,12 +1890,12 @@ check_cryptodev_mask(uint8_t cdev_id)
>>  	return -1;
>>  }
>>
>> -static int32_t
>> +static uint16_t
>>  cryptodevs_init(void)
>>  {
>>  	struct rte_cryptodev_config dev_conf;
>>  	struct rte_cryptodev_qp_conf qp_conf;
>> -	uint16_t idx, max_nb_qps, qp, i;
>> +	uint16_t idx, max_nb_qps, qp, total_nb_qps, i;
>>  	int16_t cdev_id;
>>  	struct rte_hash_parameters params = { 0 };
>>
>> @@ -1909,6 +1923,7 @@ cryptodevs_init(void)
>>  	printf("lcore/cryptodev/qp mappings:\n");
>>
>>  	idx = 0;
>> +	total_nb_qps = 0;
>>  	for (cdev_id = 0; cdev_id < rte_cryptodev_count(); cdev_id++) {
>>  		struct rte_cryptodev_info cdev_info;
>>
>> @@ -1942,6 +1957,7 @@ cryptodevs_init(void)
>>  		if (qp == 0)
>>  			continue;
>>
>> +		total_nb_qps += qp;
>>  		dev_conf.socket_id = rte_cryptodev_socket_id(cdev_id);
>>  		dev_conf.nb_queue_pairs = qp;
>>  		dev_conf.ff_disable = RTE_CRYPTODEV_FF_ASYMMETRIC_CRYPTO;
>> @@ -1974,7 +1990,7 @@ cryptodevs_init(void)
>>
>>  	printf("\n");
>>
>> -	return 0;
>> +	return total_nb_qps;
>>  }
>>
>>  static void
>> @@ -2607,16 +2623,18 @@ int32_t
>>  main(int32_t argc, char **argv)
>>  {
>>  	int32_t ret;
>> -	uint32_t lcore_id;
>> +	uint32_t lcore_id, nb_txq, nb_rxq = 0;
>>  	uint32_t cdev_id;
>>  	uint32_t i;
>>  	uint8_t socket_id;
>> -	uint16_t portid;
>> +	uint16_t portid, nb_crypto_qp, nb_ports = 0;
>>  	uint64_t req_rx_offloads[RTE_MAX_ETHPORTS];
>>  	uint64_t req_tx_offloads[RTE_MAX_ETHPORTS];
>>  	struct eh_conf *eh_conf = NULL;
>>  	size_t sess_sz;
>>
>> +	nb_bufs_in_pool = 0;
>> +
>>  	/* init EAL */
>>  	ret = rte_eal_init(argc, argv);
>>  	if (ret < 0)
>> @@ -2665,6 +2683,26 @@ main(int32_t argc, char **argv)
>>
>>  	sess_sz = max_session_size();
>>
>> +	nb_crypto_qp = cryptodevs_init();
>> +
>> +	if (nb_bufs_in_pool == 0) {
>> +		RTE_ETH_FOREACH_DEV(portid) {
>> +			if ((enabled_port_mask & (1 << portid)) == 0)
>> +				continue;
>> +			nb_ports++;
>> +			nb_rxq += get_port_nb_rx_queues(portid);
>> +		}
>> +
>> +		nb_txq = nb_lcores;
>> +
>> +		nb_bufs_in_pool = RTE_MAX((nb_rxq*nb_rxd +
>> +					   nb_ports*nb_lcores*MAX_PKT_BURST +
>> +					   nb_ports*nb_txq*nb_txd +
>> +					   nb_lcores*MEMPOOL_CACHE_SIZE +
>> +					   nb_crypto_qp*CDEV_QUEUE_DESC),
> 
> I think you forgot to take into account possible reassemble table:
> @@ -2699,7 +2699,9 @@ main(int32_t argc, char **argv)
>                                            nb_ports*nb_lcores*MAX_PKT_BURST +
>                                            nb_ports*nb_txq*nb_txd +
>                                            nb_lcores*MEMPOOL_CACHE_SIZE +
> -                                          nb_crypto_qp*CDEV_QUEUE_DESC),
> +                                          nb_crypto_qp*CDEV_QUEUE_DESC +
> +                                          nb_lcores * frag_tbl_sz *
> +                                          FRAG_TBL_BUCKET_ENTRIES),
>                                           8192U);

[Lukasz] I will add it in V4.

> 
> 
> Also it might be worth for better readability to put code for nb_bufs_in_pool calculation
> in a separate  function (and add spaces between '*' and its' operands).
> Apart from that - whole series LGTM.
> Konstantin

[Lukasz] Thank you for reviewing the changes. I will resolve your comment in V4.

> 
> 
>> +					  8192U);
>> +	}
>> +
>>  	for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
>>  		if (rte_lcore_is_enabled(lcore_id) == 0)
>>  			continue;
>> @@ -2678,11 +2716,12 @@ main(int32_t argc, char **argv)
>>  		if (socket_ctx[socket_id].mbuf_pool)
>>  			continue;
>>
>> -		pool_init(&socket_ctx[socket_id], socket_id, NB_MBUF);
>> +		pool_init(&socket_ctx[socket_id], socket_id, nb_bufs_in_pool);
>>  		session_pool_init(&socket_ctx[socket_id], socket_id, sess_sz);
>>  		session_priv_pool_init(&socket_ctx[socket_id], socket_id,
>>  			sess_sz);
>>  	}
>> +	printf("Number of mbufs in packet pool %d\n", nb_bufs_in_pool);
>>
>>  	RTE_ETH_FOREACH_DEV(portid) {
>>  		if ((enabled_port_mask & (1 << portid)) == 0)
>> @@ -2694,8 +2733,6 @@ main(int32_t argc, char **argv)
>>  				req_tx_offloads[portid]);
>>  	}
>>
>> -	cryptodevs_init();
>> -
>>  	/*
>>  	 * Set the enabled port mask in helper config for use by helper
>>  	 * sub-system. This will be used while initializing devices using
>> --
>> 2.7.4
>