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From: Bruce Richardson <bruce.richardson@intel.com>
To: Shahaf Shuler <shahafs@mellanox.com>
Cc: nelio.laranjeiro@6wind.com, yskoh@mellanox.com,
	matan@mellanox.com, bluca@debian.org, dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH v5] net/mlx: add meson build support
Date: Fri, 7 Sep 2018 11:34:29 +0100	[thread overview]
Message-ID: <20180907103429.GA12540@bricha3-MOBL.ger.corp.intel.com> (raw)
In-Reply-To: <20180905114746.117936-1-shahafs@mellanox.com>

On Wed, Sep 05, 2018 at 02:47:46PM +0300, Shahaf Shuler wrote:
> From: Nelio Laranjeiro <nelio.laranjeiro@6wind.com>
> 
> Compile Mellanox drivers when their external dependencies are met.  A
> glue version of the driver can still be requested by using the
> -Denable_driver_mlx_glue=true
> 
> To avoid modifying the whole sources and keep the compatibility with
> current build systems (e.g. make), the mlx{4,5}_autoconf.h is still
> generated.
> 
> Meson will try to find the required external libraries.  When they are
> not installed system wide, they can be provided though CFLAGS, LDFLAGS
> and LD_LIBRARY_PATH environment variables, example (considering
> RDMA-Core is installed in /tmp/rdma-core):
> 
>  # CLFAGS=-I/tmp/rdma-core/build/include \
>    LDFLAGS=-L/tmp/rdma-core/build/lib \
>    LD_LIBRARY_PATH=/tmp/rdma-core/build/lib \
>    meson output
>  # LD_LIBRARY_PATH=/tmp/rdma-core/build/lib \
>    ninja -C output install
> 
> Note: LD_LIBRARY_PATH before ninja is necessary when the meson
> configuration has changed (e.g. meson configure has been called), in
> such situation the LD_LIBRARY_PATH is necessary to invoke the
> autoconfiguration script.
> 
> Signed-off-by: Nelio Laranjeiro <nelio.laranjeiro@6wind.com>
> Signed-off-by: Shahaf Shuler <shahafs@mellanox.com>
> Acked-by: Bruce Richardson <bruce.richardson@intel.com>
> ---
> Changes in v5:
> 
> - use meson tool to generate Mellanox config file instead of DPDK custom scripts.
> 

<snip>

> +        # To maintain the compatibility with the make build system
> +        # mlx5_autoconf.h file is still generated.
> +        # input array for meson symbol search:
> +        # [ "MACRO to define if found", "header for the search",
> +        #   "type/enum/define", "symbol to search",
> +        #   "struct member to search (type only)]
> +        #
> +        args = [
> +                [ 'HAVE_IBV_DEVICE_STRIDING_RQ_SUPPORT', 'infiniband/mlx5dv.h',
> +                  'enum', 'MLX5DV_CQE_RES_FORMAT_CSUM_STRIDX' ],
> +                [ 'HAVE_IBV_DEVICE_TUNNEL_SUPPORT', 'infiniband/mlx5dv.h',
> +                  'enum', 'MLX5DV_CONTEXT_MASK_TUNNEL_OFFLOADS' ],
> +                [ 'HAVE_IBV_MLX5_MOD_MPW', 'infiniband/mlx5dv.h',
> +                  'enum', 'MLX5DV_CONTEXT_FLAGS_MPW_ALLOWED' ],
> +                [ 'HAVE_IBV_MLX5_MOD_SWP', 'infiniband/mlx5dv.h',
> +                  'type', 'struct mlx5dv_sw_parsing_caps',
> +                  'sw_parsing_offloads' ],
> +                [ 'HAVE_IBV_MLX5_MOD_CQE_128B_COMP', 'infiniband/mlx5dv.h',
> +                  'enum', 'MLX5DV_CONTEXT_FLAGS_CQE_128B_COMP' ],
> +                [ 'HAVE_IBV_DEVICE_MPLS_SUPPORT', 'infiniband/verbs.h',
> +                  'enum', 'IBV_FLOW_SPEC_MPLS' ],
> +                [ 'HAVE_IBV_WQ_FLAG_RX_END_PADDING', 'infiniband/verbs.h',
> +                  'enum', 'IBV_WQ_FLAG_RX_END_PADDING' ],
> +                [ 'HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT', 'infiniband/verbs.h',
> +                  'type', 'struct ibv_counter_set_init_attr',
> +                  'counter_set_id' ],
> +                [ 'HAVE_SUPPORTED_40000baseKR4_Full', 'linux/ethtool.h',
> +                  'define', 'SUPPORTED_40000baseKR4_Full' ],
> +                [ 'HAVE_SUPPORTED_40000baseCR4_Full', 'linux/ethtool.h',
> +                  'define', 'SUPPORTED_40000baseCR4_Full' ],
> +                [ 'HAVE_SUPPORTED_40000baseSR4_Full', 'linux/ethtool.h',
> +                  'define', 'SUPPORTED_40000baseSR4_Full' ],
> +                [ 'HAVE_SUPPORTED_40000baseLR4_Full', 'linux/ethtool.h',
> +                  'define', 'SUPPORTED_40000baseLR4_Full' ],
> +                [ 'HAVE_SUPPORTED_56000baseKR4_Full', 'linux/ethtool.h',
> +                  'define', 'SUPPORTED_56000baseKR4_Full' ],
> +                [ 'HAVE_SUPPORTED_56000baseCR4_Full', 'linux/ethtool.h',
> +                  'define', 'SUPPORTED_56000baseCR4_Full' ],
> +                [ 'HAVE_SUPPORTED_56000baseSR4_Full', 'linux/ethtool.h',
> +                  'define', 'SUPPORTED_56000baseSR4_Full' ],
> +                [ 'HAVE_SUPPORTED_56000baseLR4_Full', 'linux/ethtool.h',
> +                  'define', 'SUPPORTED_56000baseLR4_Full' ],
> +                [ 'HAVE_ETHTOOL_LINK_MODE_25G', 'linux/ethtool.h',
> +                  'enum', 'ETHTOOL_LINK_MODE_25000baseCR_Full_BIT' ],
> +                [ 'HAVE_ETHTOOL_LINK_MODE_50G', 'linux/ethtool.h',
> +                  'enum', 'ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT' ],
> +                [ 'HAVE_ETHTOOL_LINK_MODE_100G', 'linux/ethtool.h',
> +                  'enum', 'ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT' ],
> +                [ 'HAVE_IFLA_PHYS_SWITCH_ID', 'linux/if_link.h',
> +                  'enum', 'IFLA_PHYS_SWITCH_ID' ],
> +                [ 'HAVE_IFLA_PHYS_PORT_NAME', 'linux/if_link.h',
> +                  'enum', 'IFLA_PHYS_PORT_NAME' ],
> +                [ 'HAVE_TCA_FLOWER_ACT', 'linux/pkt_cls.h',
> +                  'enum', 'TCA_FLOWER_ACT' ],
> +                [ 'HAVE_TCA_FLOWER_FLAGS', 'linux/pkt_cls.h',
> +                  'enum', 'TCA_FLOWER_FLAGS' ],
> +                [ 'HAVE_TCA_FLOWER_KEY_ETH_TYPE', 'linux/pkt_cls.h',
> +                  'enum', 'TCA_FLOWER_KEY_ETH_TYPE' ],
> +                [ 'HAVE_TCA_FLOWER_KEY_ETH_DST', 'linux/pkt_cls.h',
> +                  'enum', 'TCA_FLOWER_KEY_ETH_DST' ],
> +                [ 'HAVE_TCA_FLOWER_KEY_ETH_DST_MASK', 'linux/pkt_cls.h',
> +                  'enum', 'TCA_FLOWER_KEY_ETH_DST_MASK' ],
> +                [ 'HAVE_TCA_FLOWER_KEY_ETH_SRC', 'linux/pkt_cls.h',
> +                  'enum', 'TCA_FLOWER_KEY_ETH_SRC' ],
> +                [ 'HAVE_TCA_FLOWER_KEY_ETH_SRC_MASK', 'linux/pkt_cls.h',
> +                  'enum', 'TCA_FLOWER_KEY_ETH_SRC_MASK' ],
> +                [ 'HAVE_TCA_FLOWER_KEY_IP_PROTO', 'linux/pkt_cls.h',
> +                  'enum', 'TCA_FLOWER_KEY_IP_PROTO' ],
> +                [ 'HAVE_TCA_FLOWER_KEY_IPV4_SRC', 'linux/pkt_cls.h',
> +                  'enum', 'TCA_FLOWER_KEY_IPV4_SRC' ],
> +                [ 'HAVE_TCA_FLOWER_KEY_IPV4_SRC_MASK', 'linux/pkt_cls.h',
> +                  'enum', 'TCA_FLOWER_KEY_IPV4_SRC_MASK' ],
> +                [ 'HAVE_TCA_FLOWER_KEY_IPV4_DST', 'linux/pkt_cls.h',
> +                  'enum', 'TCA_FLOWER_KEY_IPV4_DST' ],
> +                [ 'HAVE_TCA_FLOWER_KEY_IPV4_DST_MASK', 'linux/pkt_cls.h',
> +                  'enum', 'TCA_FLOWER_KEY_IPV4_DST_MASK' ],
> +                [ 'HAVE_TCA_FLOWER_KEY_IPV6_SRC', 'linux/pkt_cls.h',
> +                  'enum', 'TCA_FLOWER_KEY_IPV6_SRC' ],
> +                [ 'HAVE_TCA_FLOWER_KEY_IPV6_SRC_MASK', 'linux/pkt_cls.h',
> +                  'enum', 'TCA_FLOWER_KEY_IPV6_SRC_MASK' ],
> +                [ 'HAVE_TCA_FLOWER_KEY_IPV6_DST', 'linux/pkt_cls.h',
> +                  'enum', 'TCA_FLOWER_KEY_IPV6_DST' ],
> +                [ 'HAVE_TCA_FLOWER_KEY_IPV6_DST_MASK', 'linux/pkt_cls.h',
> +                  'enum', 'TCA_FLOWER_KEY_IPV6_DST_MASK' ],
> +                [ 'HAVE_TCA_FLOWER_KEY_TCP_SRC', 'linux/pkt_cls.h',
> +                  'enum', 'TCA_FLOWER_KEY_TCP_SRC' ],
> +                [ 'HAVE_TCA_FLOWER_KEY_TCP_SRC_MASK', 'linux/pkt_cls.h',
> +                  'enum', 'TCA_FLOWER_KEY_TCP_SRC_MASK' ],
> +                [ 'HAVE_TCA_FLOWER_KEY_TCP_DST', 'linux/pkt_cls.h',
> +                  'enum', 'TCA_FLOWER_KEY_TCP_DST' ],
> +                [ 'HAVE_TCA_FLOWER_KEY_TCP_DST_MASK', 'linux/pkt_cls.h',
> +                  'enum', 'TCA_FLOWER_KEY_TCP_DST_MASK' ],
> +                [ 'HAVE_TCA_FLOWER_KEY_UDP_SRC', 'linux/pkt_cls.h',
> +                  'enum', 'TCA_FLOWER_KEY_UDP_SRC' ],
> +                [ 'HAVE_TCA_FLOWER_KEY_UDP_SRC_MASK', 'linux/pkt_cls.h',
> +                  'enum', 'TCA_FLOWER_KEY_UDP_SRC_MASK' ],
> +                [ 'HAVE_TCA_FLOWER_KEY_UDP_DST', 'linux/pkt_cls.h',
> +                  'enum', 'TCA_FLOWER_KEY_UDP_DST' ],
> +                [ 'HAVE_TCA_FLOWER_KEY_UDP_DST_MASK', 'linux/pkt_cls.h',
> +                  'enum', 'TCA_FLOWER_KEY_UDP_DST_MASK' ],
> +                [ 'HAVE_TCA_FLOWER_KEY_VLAN_ID', 'linux/pkt_cls.h',
> +                  'enum', 'TCA_FLOWER_KEY_VLAN_ID' ],
> +                [ 'HAVE_TCA_FLOWER_KEY_VLAN_PRIO', 'linux/pkt_cls.h',
> +                  'enum', 'TCA_FLOWER_KEY_VLAN_PRIO' ],
> +                [ 'HAVE_TCA_FLOWER_KEY_VLAN_ETH_TYPE', 'linux/pkt_cls.h',
> +                  'enum', 'TCA_FLOWER_KEY_VLAN_ETH_TYPE' ],
> +                [ 'HAVE_TC_ACT_VLAN', 'linux/tc_act/tc_vlan.h', 'enum',
> +                  'TCA_VLAN_PUSH_VLAN_PRIORITY' ],
> +                [ 'HAVE_RDMA_NL_NLDEV', 'rdma/rdma_netlink.h', 'enum',
> +                  'RDMA_NL_NLDEV' ],
> +                [ 'HAVE_RDMA_NLDEV_CMD_GET', 'rdma/rdma_netlink.h', 'enum',
> +                  'RDMA_NLDEV_CMD_GET' ],
> +                [ 'HAVE_RDMA_NLDEV_CMD_PORT_GET', 'rdma/rdma_netlink.h',
> +                  'enum', 'RDMA_NLDEV_CMD_PORT_GET' ],
> +                [ 'HAVE_RDMA_NLDEV_ATTR_DEV_INDEX', 'rdma/rdma_netlink.h',
> +                  'enum', 'RDMA_NLDEV_ATTR_DEV_INDEX' ],
> +                [ 'HAVE_RDMA_NLDEV_ATTR_DEV_NAME', 'rdma/rdma_netlink.h',
> +                  'enum', 'RDMA_NLDEV_ATTR_DEV_NAME' ],
> +                [ 'HAVE_RDMA_NLDEV_ATTR_PORT_INDEX', 'rdma/rdma_netlink.h',
> +                  'enum', 'RDMA_NLDEV_ATTR_PORT_INDEX' ],
> +                [ 'HAVE_RDMA_NLDEV_ATTR_NDEV_INDEX', 'rdma/rdma_netlink.h',
> +                  'enum', 'RDMA_NLDEV_ATTR_NDEV_INDEX' ],
> +        ]
> +        run_command('rm', '-f', meson.current_build_dir() + '/mlx5_autoconf.h')
> +        config = configuration_data()
> +        foreach arg:args
> +		if arg[2] == 'type'
> +			file_prefix = '#include<' + arg[1] + '>'
> +			has = cc.has_member(arg[3], arg[4], prefix : file_prefix)
> +		else
> +			has = cc.has_header_symbol(arg[1], arg[3])
> +		endif
> +		if has
> +			config.set(arg[0], 1)
> +		endif
> +        endforeach
> +        configure_file(output : 'mlx5_autoconf.h', configuration : config)
> +endif

couple of minor points:
* These new additions use tab rather than space for indent. The standard
  with meson I think is normally spaces, but I (inadvertently) added all
  other DPDK meson.build files with tabs, so for consistency I think it
  would be good if the whole file used tabs i.e. change all the other lines
  apart from your new ones in v5.

* is the "rm" command really necessary? I would expect the configure_file()
  function to just do the right thing here when replacing the file.

* Would you consider splitting the args array into two arrays, one for the
  "type" values and another for the enum/define ones? This would mean
  having two loops, but the loops themselves would be clearer and shorter -
  as would the arrays.  Especially since according to
  http://mesonbuild.com/Configuration.html
  a boolean false converts to an "undef", rather than a 0/1 value.
  For example:

	foreach arg:has_sym_args
		config.set(arg[0], cc.has_header_symbol(arg[1], arg[3]))
	endforeach
 
* Very minor suggestion: is it neater to use "args: '-include ' + arg[1]",
  instead of using prefix with the #include syntax? [Assuming the former
  works]

Thanks,
/Bruce

  reply	other threads:[~2018-09-07 10:34 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <Message-Id: <7812af2267017898332783e934bef9478814ae96.1535361299.git.nelio.laranjeiro@6wind.com>
2018-08-27 12:42 ` [dpdk-dev] [PATCH v2] " Nelio Laranjeiro
2018-08-28 15:45   ` Bruce Richardson
2018-08-29  9:34     ` Nélio Laranjeiro
2018-08-29 10:01       ` Bruce Richardson
2018-08-29 12:44         ` Nélio Laranjeiro
2018-08-29 10:00     ` Luca Boccassi
2018-08-29 11:59       ` Nélio Laranjeiro
2018-08-29 12:28         ` Luca Boccassi
2018-08-31 16:24         ` Luca Boccassi
2018-08-29 13:48   ` [dpdk-dev] [PATCH v3] " Nelio Laranjeiro
2018-08-30 14:46     ` Bruce Richardson
2018-08-31  7:05       ` Nélio Laranjeiro
2018-08-31  7:16     ` [dpdk-dev] [PATCH v4] " Nelio Laranjeiro
2018-09-05 11:47       ` [dpdk-dev] [PATCH v5] " Shahaf Shuler
2018-09-07 10:34         ` Bruce Richardson [this message]
2018-09-13  9:22           ` Bruce Richardson
2018-09-13 10:12             ` Shahaf Shuler
2018-09-13 10:51               ` Bruce Richardson
2018-09-13 12:11         ` [dpdk-dev] [PATCH v6 1/2] net/mlx5: support meson build Shahaf Shuler
2018-09-13 12:41           ` Bruce Richardson
2018-09-16  9:01             ` Shahaf Shuler
2018-09-13 12:11         ` [dpdk-dev] [PATCH v6 2/2] net/mlx4: " Shahaf Shuler
2018-08-27 11:10 [dpdk-dev] [PATCH 1/2] build: add extra cflags ldflags to meson option Nelio Laranjeiro
2018-08-27 11:10 ` [dpdk-dev] [PATCH 2/2] net/mlx: add meson build support Nelio Laranjeiro
2018-08-27 11:24 ` [dpdk-dev] [PATCH 1/2] build: add extra cflags ldflags to meson option Bruce Richardson
2018-08-27 12:20   ` Nélio Laranjeiro

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