[dpdk-dev] [PATCH 1/2] lib/librte_ethdev: add in default value of rte_eth_dev_info

[Mo, YufengX]

Hi, Sunil Kumar Kori

This series' patches have been merged on dpdk/master. They cause testpmd core dumped on intel nics.

./usertools/dpdk-devbind.py -b igb_uio 0000:xx:00.0 0000:xx:00.1
./x86_64-native-linuxapp-gcc/app/testpmd -v -c 0x3f -n 4  -- -i

Running environment as the following:

* OS:
fedora 20/22/27/30
3.16.4/4.4.14/5.1.0

* Compiler:
gcc version 5.3.1
gcc version 7.3.1
gcc version 4.8.3

* Hardware platform:
Broadwell-EP Xeon E5-2600
Intel(R) Xeon(R) CPU E5-2699 v4 @ 2.20GHz
Intel(R) Xeon(R) CPU E5-2680 v2 @ 2.80GHz
Intel(R) Xeon(R) Platinum 8160 CPU @ 2.10GHz

* NIC hardware:
fortville_spirit
Ethernet Controller XL710 for 40GbE QSFP+ 1583
version: 1.5.16
firmware-version: 6.01 0x800034a4 1.1747.0

fortville(25G 2 ports nic)
Ethernet Controller XXV710 for 25GbE SFP28 158b
driver: i40e
version: 2.1.14-k
firmware-version: 6.01 0x80003554 1.1747.0

fortville(10G 2 ports nic)
Ethernet Controller X710 for 10GbE SFP+ 1572
driver: i40e
version: 2.1.14-k
firmware-version: 6.01 0x800035b0 1.1747.0

niantic
Device_str: 82599ES 10-Gigabit SFI/SFP+ Network Connection
firmware: 0x61bf0001
ixgbe: 4.3.13
ixgbevf: 2.12.1-k


> -----Original Message-----
> From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Sunil Kumar Kori
> Sent: Monday, May 27, 2019 4:35 PM
> To: thomas at monjalon.net; Yigit, Ferruh <ferruh.yigit at intel.com>; arybchenko at solarflare.com; Lu, Wenzhuo <wenzhuo.lu at intel.com>;
> Wu, Jingjing <jingjing.wu at intel.com>; Iremonger, Bernard <bernard.iremonger at intel.com>
> Cc: dev at dpdk.org; Sunil Kumar Kori <skori at marvell.com>
> Subject: [dpdk-dev] [PATCH 1/2] lib/librte_ethdev: add in default value of rte_eth_dev_info
> 
> rte_eth_dev_info structure exposes, nb_seg_max & nb_mtu_seg_max
> to provide maximum number of supported segments for a given platform.
> 
> Defining UINT16_MAX as default value of above mentioned variables to
> expose support of infinite/maximum segments.
> 
> Based on above values, application can decide best size for buffers
> while creating mbuf pool.
> 
> Signed-off-by: Sunil Kumar Kori <skori at marvell.com>
> ---
>  lib/librte_ethdev/rte_ethdev.c | 2 ++
>  lib/librte_ethdev/rte_ethdev.h | 2 ++
>  2 files changed, 4 insertions(+)
> 
> diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
> index d7cfa3d..6933757 100644
> --- a/lib/librte_ethdev/rte_ethdev.c
> +++ b/lib/librte_ethdev/rte_ethdev.c
> @@ -2543,6 +2543,8 @@ struct rte_eth_dev *
>  		.nb_max = UINT16_MAX,
>  		.nb_min = 0,
>  		.nb_align = 1,
> +		.nb_seg_max = UINT16_MAX,
> +		.nb_mtu_seg_max = UINT16_MAX,
>  	};
> 
>  	RTE_ETH_VALID_PORTID_OR_RET(port_id);
> diff --git a/lib/librte_ethdev/rte_ethdev.h b/lib/librte_ethdev/rte_ethdev.h
> index 1f35e1d..6bd30b1 100644
> --- a/lib/librte_ethdev/rte_ethdev.h
> +++ b/lib/librte_ethdev/rte_ethdev.h
> @@ -2333,6 +2333,8 @@ int rte_eth_dev_set_rx_queue_stats_mapping(uint16_t port_id,
>   *      .nb_max = UINT16_MAX,
>   *      .nb_min = 0,
>   *      .nb_align = 1,
> + *	.nb_seg_max = UINT16_MAX,
> + *	.nb_mtu_seg_max = UINT16_MAX,
>   *  };
>   *
>   * device = dev->device
> --
> 1.8.3.1