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app/testpmd: create mbuf based on max supported segments

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Configuring buffer size based following parameters:
- max-pkt-len
- max supported segments per MTU

Buffer size are configured as given below:
- If platform supports infinite segments per packet then default
  buffer size is used.
- If platform supports nb_mtu_seg_max segments then buffer size
  is configured as (max-pkt-len / nb_mtu_seg_max) + headroom

Signed-off-by: Sunil Kumar Kori <skori@marvell.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
This commit is contained in:
Sunil Kumar Kori 2019-05-27 14:05:29 +05:30 committed by Ferruh Yigit
parent a79e3088ca
commit 33f9630fc2
1 changed files with 21 additions and 0 deletions
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21
app/test-pmd/testpmd.c
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@ -1101,6 +1101,8 @@ init_config(void)
uint8_t port_per_socket[RTE_MAX_NUMA_NODES];
struct rte_gro_param gro_param;
uint32_t gso_types;
uint16_t data_size;
bool warning = 0;
int k;
memset(port_per_socket,0,RTE_MAX_NUMA_NODES);
@ -1168,8 +1170,27 @@ init_config(void)
port->need_reconfig = 1;
port->need_reconfig_queues = 1;
port->tx_metadata = 0;
/* Check for maximum number of segments per MTU. Accordingly
* update the mbuf data size.
*/
if (port->dev_info.rx_desc_lim.nb_mtu_seg_max != UINT16_MAX) {
data_size = rx_mode.max_rx_pkt_len /
port->dev_info.rx_desc_lim.nb_mtu_seg_max;
if ((data_size + RTE_PKTMBUF_HEADROOM) >
mbuf_data_size) {
mbuf_data_size = data_size +
RTE_PKTMBUF_HEADROOM;
warning = 1;
}
}
}
if (warning)
TESTPMD_LOG(WARNING, "Configured mbuf size %hu\n",
mbuf_data_size);
/*
* Create pools of mbuf.
* If NUMA support is disabled, create a single pool of mbuf in