Re: [dpdk-dev] [PATCH v1 2/4] eventdev: improve err handling for Rx adapter queue add/del

[Jerin Jacob <jerin.jacob@caviumnetworks.com>]

-----Original Message-----
> Date: Fri, 8 Jun 2018 23:45:15 +0530
> From: Nikhil Rao <nikhil.rao@intel.com>
> To: jerin.jacob@caviumnetworks.com
> CC: dev@dpdk.org, Nikhil Rao <nikhil.rao@intel.com>
> Subject: [PATCH v1 2/4] eventdev: improve err handling for Rx adapter queue
>  add/del
> X-Mailer: git-send-email 1.8.3.1
> 
> The new WRR sequence applicable after queue add/del is set
> up after setting the new queue state, so a memory allocation
> failure will leave behind an incorrect state.
> 
> This change separates the memory sizing + allocation for the
> Rx poll and WRR array from calculation of the WRR sequence.
> If there is a memory allocation failure, existing Rx queue
> configuration remains unchanged.
> 
> Signed-off-by: Nikhil Rao <nikhil.rao@intel.com>
> ---
> @@ -995,7 +1177,6 @@ static int rxa_sw_add(struct rte_event_eth_rx_adapter *rx_adapter,
>  	struct rte_event_eth_rx_adapter *rx_adapter;
>  	struct rte_eventdev *dev;
>  	struct eth_device_info *dev_info;
> -	int start_service;
>  
>  	RTE_EVENT_ETH_RX_ADAPTER_ID_VALID_OR_ERR_RET(id, -EINVAL);
>  	RTE_ETH_VALID_PORTID_OR_ERR_RET(eth_dev_id, -EINVAL);
> @@ -1038,7 +1219,6 @@ static int rxa_sw_add(struct rte_event_eth_rx_adapter *rx_adapter,
>  		return -EINVAL;
>  	}
>  
> -	start_service = 0;
>  	dev_info = &rx_adapter->eth_devices[eth_dev_id];
>  
>  	if (cap & RTE_EVENT_ETH_RX_ADAPTER_CAP_INTERNAL_PORT) {
> @@ -1072,16 +1252,13 @@ static int rxa_sw_add(struct rte_event_eth_rx_adapter *rx_adapter,
>  			ret = rxa_sw_add(rx_adapter, eth_dev_id, rx_queue_id,
>  					queue_conf);
>  		rte_spinlock_unlock(&rx_adapter->rx_lock);
> -		if (ret == 0)
> -			start_service =
> -				!!rxa_sw_adapter_queue_count(rx_adapter);
>  	}
>  
>  	if (ret)
>  		return ret;
>  
> -	if (start_service)
> -		rte_service_component_runstate_set(rx_adapter->service_id, 1);
> +	rte_service_component_runstate_set(rx_adapter->service_id,
> +				rxa_sw_adapter_queue_count(rx_adapter));

Please move this logic under above !cap & RTE_EVENT_ETH_RX_ADAPTER_CAP_INTERNAL_PORT
condition as rte_service not valid for internal ports.


>