Re: ConnectX4 100GbE - Compilation problem

[Adrien Mazarguil <adrien.mazarguil@6wind.com>]

Hi George,

On Thu, Aug 18, 2016 at 05:41:38PM +0200, george.dit@gmail.com wrote:
> Hi,
> 
> I have a single port Mellanox ConnectX 4 100GbE NIC and I want to test its
> Rx/Tx capabilites  using DPDK.
> My system runs a Linux kernel 4.4 compiled from sources.
> 
> I found the PMD driver for this NIC as provided by Mellanox here
> <http://www.mellanox.com/page/products_dyn?product_family=209&mtag=pmd_for_dpdk>
> .
> Following this
> <http://www.mellanox.com/related-docs/prod_software/MLNX_DPDK_Quick_Start_Guide_v2.2_2.7.pdf>
> guideline, I put my NIC in Ethernet mode, configured the 3 options
> regarding mlx5 in the config/common_linuxapp file and applied 'make install
> T=x86_64-native-linuxapp-gcc'.

Please note this is a third party package maintained by Mellanox, therefore
this mailing list is not the right place to discuss related errors, unless
they can be reproduced with a version downloaded from dpdk.org.

> Then, I stumbled upon a compilation problem in the mlx4 module.
> The compiler's output is as follows:
> 
> == Build drivers/net/mlx4
>   CC mlx4.o
> In file included from /usr/include/linux/if.h:31:0,
>                  from /opt/MLNX_DPDK_2.2_2.7/drivers/net/mlx4/mlx4.c:57:
> /usr/include/linux/hdlc/ioctl.h:73:14: error: ‘IFNAMSIZ’ undeclared here
> (not in a function)
>   char master[IFNAMSIZ]; /* Name of master FRAD device */
>               ^
> /opt/MLNX_DPDK_2.2_2.7/drivers/net/mlx4/mlx4.c:612:53: error: ‘struct
> ifreq’ declared inside parameter list [-Werror]
>  priv_ifreq(const struct priv *priv, int req, struct ifreq *ifr)
>                                                      ^
> /opt/MLNX_DPDK_2.2_2.7/drivers/net/mlx4/mlx4.c:612:53: error: its scope is
> only this definition or declaration, which is probably not what you want
> [-Werror]
> /opt/MLNX_DPDK_2.2_2.7/drivers/net/mlx4/mlx4.c: In function ‘priv_ifreq’:
> /opt/MLNX_DPDK_2.2_2.7/drivers/net/mlx4/mlx4.c:619:32: error: dereferencing
> pointer to incomplete type ‘struct ifreq’
>   if (priv_get_ifname(priv, &ifr->ifr_name) == 0)
>                                 ^
> /opt/MLNX_DPDK_2.2_2.7/drivers/net/mlx4/mlx4.c: In function ‘rxq_setup’:
> /opt/MLNX_DPDK_2.2_2.7/drivers/net/mlx4/mlx4.c:3735:29: error: unused
> parameter ‘inactive’ [-Werror=unused-parameter]
>     unsigned int socket, int inactive, const struct rte_eth_rxconf *conf,
>                              ^
> /opt/MLNX_DPDK_2.2_2.7/drivers/net/mlx4/mlx4.c: In function
> ‘mlx4_link_update_unlocked’:
> /opt/MLNX_DPDK_2.2_2.7/drivers/net/mlx4/mlx4.c:4712:15: error: storage size
> of ‘ifr’ isn’t known
>   struct ifreq ifr;
>                ^
> /opt/MLNX_DPDK_2.2_2.7/drivers/net/mlx4/mlx4.c:4724:43: error: ‘IFF_UP’
> undeclared (first use in this function)
>   dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
>                                            ^
> /opt/MLNX_DPDK_2.2_2.7/drivers/net/mlx4/mlx4.c:4724:43: note: each
> undeclared identifier is reported only once for each function it appears in
> /opt/MLNX_DPDK_2.2_2.7/drivers/net/mlx4/mlx4.c:4725:22: error:
> ‘IFF_RUNNING’ undeclared (first use in this function)
>      (ifr.ifr_flags & IFF_RUNNING));
>                       ^
> /opt/MLNX_DPDK_2.2_2.7/drivers/net/mlx4/mlx4.c:4712:15: error: unused
> variable ‘ifr’ [-Werror=unused-variable]
>   struct ifreq ifr;
>                ^
> /opt/MLNX_DPDK_2.2_2.7/drivers/net/mlx4/mlx4.c: In function
> ‘mlx4_dev_get_flow_ctrl’:
> /opt/MLNX_DPDK_2.2_2.7/drivers/net/mlx4/mlx4.c:4880:15: error: storage size
> of ‘ifr’ isn’t known
>   struct ifreq ifr;
>                ^
> /opt/MLNX_DPDK_2.2_2.7/drivers/net/mlx4/mlx4.c:4880:15: error: unused
> variable ‘ifr’ [-Werror=unused-variable]
> /opt/MLNX_DPDK_2.2_2.7/drivers/net/mlx4/mlx4.c: In function
> ‘mlx4_dev_set_flow_ctrl’:
> /opt/MLNX_DPDK_2.2_2.7/drivers/net/mlx4/mlx4.c:4930:15: error: storage size
> of ‘ifr’ isn’t known
>   struct ifreq ifr;
>                ^
> /opt/MLNX_DPDK_2.2_2.7/drivers/net/mlx4/mlx4.c:4930:15: error: unused
> variable ‘ifr’ [-Werror=unused-variable]
> /opt/MLNX_DPDK_2.2_2.7/drivers/net/mlx4/mlx4.c: In function ‘priv_get_mac’:
> /opt/MLNX_DPDK_2.2_2.7/drivers/net/mlx4/mlx4.c:5184:15: error: storage size
> of ‘request’ isn’t known
>   struct ifreq request;
>                ^
> /opt/MLNX_DPDK_2.2_2.7/drivers/net/mlx4/mlx4.c:5184:15: error: unused
> variable ‘request’ [-Werror=unused-variable]
> /opt/MLNX_DPDK_2.2_2.7/drivers/net/mlx4/mlx4.c: In function
> ‘mlx4_pci_devinit’:
> /opt/MLNX_DPDK_2.2_2.7/drivers/net/mlx4/mlx4.c:5725:25: error: ‘IFF_UP’
> undeclared (first use in this function)
>    priv_set_flags(priv, ~IFF_UP, IFF_UP);
>                          ^
> cc1: all warnings being treated as errors
> /opt/MLNX_DPDK_2.2_2.7/mk/internal/rte.compile-pre.mk:126: recipe for
> target 'mlx4.o' failed
> 
> Iwould appreciate any suggestions and guidance.

Well fortunately these errors are also present in v2.2.0 and should have
been addressed since v16.07 by the following commit:

 http://dpdk.org/browse/dpdk/commit/?id=d06c608c013c36711e7a693b3fece68a93ae4369

You can either upgrade to v16.07, back-port this commit yourself or wait for
an update from Mellanox.

-- 
Adrien Mazarguil
6WIND