[dpdk-dev] [PATCH v1] [app/procinfo] fix memory leak - PCAP & service

[Van Haaren, Harry]

> From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Vipin Varghese
> Sent: Sunday, December 31, 2017 3:54 PM
> To: dev at dpdk.org
> Cc: Hunt, David <david.hunt at intel.com>; Jain, Deepak K
> <deepak.k.jain at intel.com>; Varghese, Vipin <vipin.varghese at intel.com>
> Subject: [dpdk-dev] [PATCH v1] [app/procinfo] fix memory leak - PCAP &
> service
> 
> When procinfo uses the PCAP PMD it is not detached. The library service
> also makes of memory but never releases at exit of application. These leads
> to memory leak, on multiple runs.
> 
> The patch add check for libpcap PMD check and detaches the same. The patch
> also frees the service library memory too.
> 
> Signed-off-by: Vipin Varghese <vipin.varghese at intel.com>

Hi,

There are two fixes in this patch, please split into two patches:
1) PCAP PMD detach
2) service library deinit()

For service library half of patch only, you can add:
Acked-by: Harry van Haaren <harry.van.haaren at intel.com>

For Ack of PCAP part, please CC PCAP maintainer.

Regards, -Harry

> ---
>  app/proc_info/main.c | 20 ++++++++++++++++++++
>  1 file changed, 20 insertions(+)
> 
> diff --git a/app/proc_info/main.c b/app/proc_info/main.c
> index 64fbbd0..44d9af9 100644
> --- a/app/proc_info/main.c
> +++ b/app/proc_info/main.c
> @@ -58,6 +58,7 @@
>  #include <rte_branch_prediction.h>
>  #include <rte_string_fns.h>
>  #include <rte_metrics.h>
> +#include <rte_service.h>
> 
>  /* Maximum long option length for option parsing. */
>  #define MAX_LONG_OPT_SZ 64
> @@ -689,5 +690,24 @@ static void collectd_resolve_cnt_type(char *cnt_type,
> size_t cnt_type_len,
>  	if (enable_metrics)
>  		metrics_display(RTE_METRICS_GLOBAL);
> 
> +	for (i = 0; i < nb_ports; i++) {
> +		struct rte_eth_dev_info dev_info = {0};
> +		char name[RTE_DEV_NAME_MAX_LEN] = {0};
> +
> +		rte_eth_dev_info_get(i, &dev_info);
> +		if (strncmp(dev_info.driver_name, "net_pcap", 8) == 0) {
> +			printf("port: %d driver_name: %s\n",
> +				i, dev_info.driver_name);
> +			rte_eth_dev_stop(i);
> +			rte_eth_dev_close(i);
> +
> +			ret = rte_eth_dev_detach(i, name);
> +			if (ret)
> +				rte_panic("Failed to detach %s\n", name);
> +		}
> +	}
> +
> +	rte_service_deinit();
> +
>  	return 0;
>  }
> --
> 1.9.1