From: Thomas Monjalon <thomas.monjalon@6wind.com>
To: Neil Horman <nhorman@tuxdriver.com>
Cc: dev@dpdk.org, Bruce Richardson <bruce.richardson@intel.com>,
Stephen Hemminger <stephen@networkplumber.org>,
Panu Matilainen <pmatilai@redhat.com>
Subject: Re: [dpdk-dev] [PATCHv4 1/5] pmdinfogen: Add buildtools and pmdinfogen utility
Date: Wed, 25 May 2016 15:21:19 +0200 [thread overview]
Message-ID: <12522566.xGRn81iLRB@xps13> (raw)
In-Reply-To: <1464118912-19658-2-git-send-email-nhorman@tuxdriver.com>
2016-05-24 15:41, Neil Horman:
> pmdinfogen is a tool used to parse object files and build json strings for use in
> later determining hardware support in a dso or application binary. pmdinfo
> looks for the non-exported symbol names this_pmd_name<n> and this_pmd_tbl<n>
> (where n is a integer counter). It records the name of each of these tuples,
> using the later to find the symbolic name of the pci_table for physical devices
> that the object supports. With this information, it outputs a C file with a
> single line of the form:
>
> static char *<pmd_name>_driver_info[] __attribute__((used)) = " \
> PMD_DRIVER_INFO=<json string>";
>
> Where <pmd_name> is the arbitrary name of the pmd, and <json_string> is the json
> encoded string that hold relevant pmd information, including the pmd name, type
> and optional array of pci device/vendor ids that the driver supports.
>
> This c file is suitable for compiling to object code, then relocatably linking
> into the parent file from which the C was generated. This creates an entry in
> the string table of the object that can inform a later tool about hardware
> support.
This description is helpful and should be in the doc:
doc/guides/prog_guide/dev_kit_build_system.rst
> --- a/GNUmakefile
> +++ b/GNUmakefile
> -ROOTDIRS-y := lib drivers app
> +ROOTDIRS-y := buildtools lib drivers app
Why a new directory?
It is not a script nor an end-user tool, I guess.
I feel strange to build an app for the build system.
For information, do you know some Python lib to do this kind of tool?
> +++ b/buildtools/pmdinfogen/Makefile
> +#CFLAGS += $(WERROR_FLAGS) -g
> +CFLAGS += -g
Please choose one line or the other or none of them.
> +include $(RTE_SDK)/mk/rte.buildtools.mk
Why a new Makefile? Can you use rte.hostapp.mk?
> +++ b/buildtools/pmdinfogen/pmdinfogen.c
[...]
> + /*
> + * If this returns NULL, then this is a PMD_VDEV, because
> + * it has no pci table reference
> + */
We can imagine physical PMD not using PCI.
I think this comment should be removed.
> + if (!tmpsym) {
> + drv->pci_tbl = NULL;
> + return 0;
> + }
[...]
> +
> +
> + return 0;
> +
> +}
That's a lot of blank lines ;)
[...]
> + fprintf(ofd,"\\\"type\\\" : \\\"%s\\\", ", drv->pci_tbl ? "PMD_PDEV" : "PMD_VDEV");
Please forget the naming PDEV/VDEV.
[...]
> + if (info.drivers) {
> + output_pmd_info_string(&info, argv[2]);
> + rc = 0;
> + } else {
> + fprintf(stderr, "Hmm, Appears to be a driver but no drivers registered\n");
Why it appears to be a driver?
What means "no drivers registered" exactly?
> +++ b/buildtools/pmdinfogen/pmdinfogen.h
[...]
> +#define Elf_Ehdr Elf64_Ehdr
> +#define Elf_Shdr Elf64_Shdr
> +#define Elf_Sym Elf64_Sym
> +#define Elf_Addr Elf64_Addr
> +#define Elf_Sword Elf64_Sxword
> +#define Elf_Section Elf64_Half
> +#define ELF_ST_BIND ELF64_ST_BIND
> +#define ELF_ST_TYPE ELF64_ST_TYPE
> +
> +#define Elf_Rel Elf64_Rel
> +#define Elf_Rela Elf64_Rela
> +#define ELF_R_SYM ELF64_R_SYM
> +#define ELF_R_TYPE ELF64_R_TYPE
Why these defines are needed?
> +#define TO_NATIVE(x) (x)
Nice :) Why?
> +struct rte_pci_id {
> + uint16_t vendor_id; /**< Vendor ID or PCI_ANY_ID. */
> + uint16_t device_id; /**< Device ID or PCI_ANY_ID. */
> + uint16_t subsystem_vendor_id; /**< Subsystem vendor ID or PCI_ANY_ID. */
> + uint16_t subsystem_device_id; /**< Subsystem device ID or PCI_ANY_ID. */
> +};
[...]
> +struct pmd_driver {
> + Elf_Sym *name_sym;
> + const char *name;
> + struct rte_pci_id *pci_tbl;
> + struct pmd_driver *next;
> +
> + const char* opt_vals[PMD_OPT_MAX];
> +};
Are you duplicating some structures from EAL?
It will be out of sync easily.
> +struct elf_info {
> + unsigned long size;
> + Elf_Ehdr *hdr;
> + Elf_Shdr *sechdrs;
> + Elf_Sym *symtab_start;
> + Elf_Sym *symtab_stop;
> + Elf_Section export_sec;
> + Elf_Section export_unused_sec;
> + Elf_Section export_gpl_sec;
> + Elf_Section export_unused_gpl_sec;
> + Elf_Section export_gpl_future_sec;
> + char *strtab;
> + char *modinfo;
> + unsigned int modinfo_len;
Why these fields?
> +++ b/mk/rte.buildtools.mk
This file must be removed I think.
We are going to be sick after digesting so much makefiles ;)
Last comment,
The MAINTAINERS file must be updated for this tool.
Thanks for taking care of tooling.
next prev parent reply other threads:[~2016-05-25 13:21 UTC|newest]
Thread overview: 166+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-16 20:41 [dpdk-dev] [PATCH 0/4] Implement pmd hardware support exports Neil Horman
2016-05-16 20:41 ` [dpdk-dev] [PATCH 1/4] pmdinfo: Add buildtools and pmdinfo utility Neil Horman
2016-05-16 20:41 ` [dpdk-dev] [PATCH 2/4] drivers: Update driver registration macro usage Neil Horman
2016-05-16 20:41 ` [dpdk-dev] [PATCH 3/4] Makefile: Do post processing on objects that register a driver Neil Horman
2016-05-16 20:41 ` [dpdk-dev] [PATCH 4/4] pmd_hw_support.py: Add tool to query binaries for hw support information Neil Horman
2016-05-18 11:48 ` Panu Matilainen
2016-05-18 12:03 ` Neil Horman
2016-05-18 12:48 ` Panu Matilainen
2016-05-18 13:48 ` Neil Horman
2016-05-19 6:08 ` Panu Matilainen
2016-05-19 13:26 ` Neil Horman
2016-05-20 7:30 ` Panu Matilainen
2016-05-20 14:06 ` Neil Horman
2016-05-23 11:56 ` Panu Matilainen
2016-05-23 13:55 ` Neil Horman
2016-05-24 6:15 ` Panu Matilainen
2016-05-24 14:55 ` Neil Horman
2016-05-18 12:38 ` Thomas Monjalon
2016-05-18 13:09 ` Panu Matilainen
2016-05-18 13:26 ` Thomas Monjalon
2016-05-18 13:54 ` Neil Horman
2016-05-18 21:08 ` [dpdk-dev] [PATCHv2 0/4] Implement pmd hardware support exports Neil Horman
2016-05-18 21:08 ` [dpdk-dev] [PATCHv2 1/4] pmdinfogen: Add buildtools and pmdinfogen utility Neil Horman
2016-05-19 7:51 ` Panu Matilainen
2016-05-19 12:00 ` Neil Horman
2016-05-18 21:08 ` [dpdk-dev] [PATCHv2 2/4] drivers: Update driver registration macro usage Neil Horman
2016-05-19 7:58 ` Panu Matilainen
2016-05-19 10:45 ` Neil Horman
2016-05-19 10:51 ` [dpdk-dev] [dpdk-dev, PATCHv2, " Jan Viktorin
[not found] ` <20160519124650.060aa09a@pcviktorin.fit.vutbr.cz>
2016-05-19 11:40 ` Neil Horman
2016-05-18 21:08 ` [dpdk-dev] [PATCHv2 3/4] Makefile: Do post processing on objects that register a driver Neil Horman
2016-05-18 21:08 ` [dpdk-dev] [PATCHv2 4/4] pmdinfo.py: Add tool to query binaries for hw and other support information Neil Horman
2016-05-19 9:02 ` Panu Matilainen
2016-05-19 12:00 ` Neil Horman
2016-05-20 5:22 ` Panu Matilainen
2016-05-20 8:55 ` Thomas Monjalon
2016-05-20 9:12 ` Panu Matilainen
2016-05-20 14:22 ` Neil Horman
2016-05-20 14:20 ` Neil Horman
2016-05-20 17:24 ` [dpdk-dev] [PATCHv3 0/5] Implement pmd hardware support exports Neil Horman
2016-05-20 17:24 ` [dpdk-dev] [PATCHv3 1/5] pmdinfogen: Add buildtools and pmdinfogen utility Neil Horman
2016-05-20 17:24 ` [dpdk-dev] [PATCHv3 2/5] drivers: Update driver registration macro usage Neil Horman
2016-05-24 6:57 ` Panu Matilainen
2016-05-24 13:21 ` Neil Horman
2016-05-20 17:24 ` [dpdk-dev] [PATCHv3 3/5] eal: Add an export symbol to expose the autoload path to external tools Neil Horman
2016-05-20 17:24 ` [dpdk-dev] [PATCHv3 4/5] Makefile: Do post processing on objects that register a driver Neil Horman
2016-05-20 17:24 ` [dpdk-dev] [PATCHv3 5/5] pmdinfo.py: Add tool to query binaries for hw and other support information Neil Horman
2016-05-24 7:41 ` Panu Matilainen
2016-05-24 15:17 ` Neil Horman
2016-05-24 8:34 ` Panu Matilainen
2016-05-24 19:41 ` [dpdk-dev] [PATCHv4 0/5] Implement pmd hardware support exports Neil Horman
2016-05-24 19:41 ` [dpdk-dev] [PATCHv4 1/5] pmdinfogen: Add buildtools and pmdinfogen utility Neil Horman
2016-05-25 13:21 ` Thomas Monjalon [this message]
2016-05-25 17:22 ` Neil Horman
2016-05-25 17:39 ` Thomas Monjalon
2016-05-25 19:13 ` Neil Horman
2016-05-25 19:39 ` Thomas Monjalon
2016-05-25 19:57 ` Neil Horman
2016-05-24 19:41 ` [dpdk-dev] [PATCHv4 2/5] drivers: Update driver registration macro usage Neil Horman
2016-05-25 16:20 ` Thomas Monjalon
2016-05-25 17:35 ` Neil Horman
2016-05-24 19:41 ` [dpdk-dev] [PATCHv4 3/5] eal: Add an export symbol to expose the autoload path to external tools Neil Horman
2016-05-24 19:41 ` [dpdk-dev] [PATCHv4 4/5] Makefile: Do post processing on objects that register a driver Neil Horman
2016-05-25 17:08 ` Thomas Monjalon
2016-05-25 17:40 ` Neil Horman
2016-05-25 18:56 ` Thomas Monjalon
2016-05-25 19:43 ` Neil Horman
2016-05-25 20:04 ` Thomas Monjalon
2016-05-25 20:16 ` Neil Horman
2016-05-24 19:41 ` [dpdk-dev] [PATCHv4 5/5] pmdinfo.py: Add tool to query binaries for hw and other support information Neil Horman
2016-05-25 17:22 ` Thomas Monjalon
2016-05-25 17:47 ` Neil Horman
2016-05-25 18:58 ` Thomas Monjalon
2016-05-27 9:16 ` Panu Matilainen
2016-05-27 11:35 ` Neil Horman
2016-05-27 12:46 ` Panu Matilainen
2016-05-25 8:32 ` [dpdk-dev] [PATCHv4 0/5] Implement pmd hardware support exports Panu Matilainen
2016-05-25 11:27 ` Neil Horman
2016-05-26 17:17 ` [dpdk-dev] [PATCHv5 0/6] " Neil Horman
2016-05-26 17:17 ` [dpdk-dev] [PATCHv5 1/6] pmdinfogen: Add buildtools and pmdinfogen utility Neil Horman
2016-05-26 17:17 ` [dpdk-dev] [PATCHv5 2/6] drivers: Update driver registration macro usage Neil Horman
2016-05-26 17:17 ` [dpdk-dev] [PATCHv5 3/6] eal: Add an export symbol to expose the autoload path to external tools Neil Horman
2016-05-26 17:17 ` [dpdk-dev] [PATCHv5 4/6] Makefile: Do post processing on objects that register a driver Neil Horman
2016-05-26 17:17 ` [dpdk-dev] [PATCHv5 5/6] pmdinfo.py: Add tool to query binaries for hw and other support information Neil Horman
2016-05-27 14:38 ` Mcnamara, John
2016-05-27 19:56 ` Neil Horman
2016-05-26 17:17 ` [dpdk-dev] [PATCHv5 6/6] remove rte.hostapp.mk Neil Horman
2016-05-31 13:57 ` [dpdk-dev] [PATCHv6 0/7] Implement pmd hardware support exports Neil Horman
2016-05-31 13:57 ` [dpdk-dev] [PATCHv6 1/7] pmdinfogen: Add buildtools and pmdinfogen utility Neil Horman
2016-06-07 9:57 ` Thomas Monjalon
2016-06-07 12:04 ` Neil Horman
2016-06-07 12:53 ` Thomas Monjalon
2016-06-07 13:03 ` Neil Horman
2016-06-07 13:24 ` Thomas Monjalon
2016-06-07 13:49 ` Neil Horman
2016-06-07 14:09 ` Thomas Monjalon
2016-05-31 13:57 ` [dpdk-dev] [PATCHv6 2/7] drivers: Update driver registration macro usage Neil Horman
2016-05-31 13:57 ` [dpdk-dev] [PATCHv6 3/7] eal: Add an export symbol to expose the autoload path to external tools Neil Horman
2016-05-31 13:57 ` [dpdk-dev] [PATCHv6 4/7] Makefile: Do post processing on objects that register a driver Neil Horman
2016-05-31 13:57 ` [dpdk-dev] [PATCHv6 5/7] pmdinfo.py: Add tool to query binaries for hw and other support information Neil Horman
2016-05-31 13:57 ` [dpdk-dev] [PATCHv6 6/7] remove rte.hostapp.mk Neil Horman
2016-05-31 13:57 ` [dpdk-dev] [PATCHv6 7/7] doc: Add prog_guide section documenting pmdinfo script Neil Horman
2016-06-08 17:14 ` Mcnamara, John
2016-06-09 17:31 ` Neil Horman
2016-06-05 0:20 ` [dpdk-dev] [PATCHv6 0/7] Implement pmd hardware support exports Neil Horman
2016-06-07 9:34 ` Thomas Monjalon
2016-06-07 12:08 ` Neil Horman
2016-06-07 12:27 ` Thomas Monjalon
2016-06-09 17:46 ` [dpdk-dev] [PATCHv7 0/6] " Neil Horman
2016-06-09 17:46 ` [dpdk-dev] [PATCHv7 1/6] pmdinfogen: Add buildtools and pmdinfogen utility Neil Horman
2016-06-16 12:29 ` Panu Matilainen
2016-06-16 13:33 ` Neil Horman
2016-06-16 14:06 ` Panu Matilainen
2016-06-16 14:41 ` Neil Horman
2016-06-09 17:46 ` [dpdk-dev] [PATCHv7 2/6] drivers: Update driver registration macro usage Neil Horman
2016-06-09 17:46 ` [dpdk-dev] [PATCHv7 3/6] eal: Add an export symbol to expose the autoload path to external tools Neil Horman
2016-06-09 17:46 ` [dpdk-dev] [PATCHv7 4/6] Makefile: Do post processing on objects that register a driver Neil Horman
2016-06-09 17:47 ` [dpdk-dev] [PATCHv7 5/6] pmdinfo.py: Add tool to query binaries for hw and other support information Neil Horman
2016-06-16 12:32 ` Panu Matilainen
2016-06-09 17:47 ` [dpdk-dev] [PATCHv7 6/6] doc: Add prog_guide section documenting pmdinfo script Neil Horman
2016-06-09 19:55 ` Mcnamara, John
2016-06-17 18:46 ` [dpdk-dev] [PATCHv8 0/6] Implement pmd hardware support exports Neil Horman
2016-06-17 18:46 ` [dpdk-dev] [PATCHv8 1/6] pmdinfogen: Add buildtools and pmdinfogen utility Neil Horman
2016-06-17 18:46 ` [dpdk-dev] [PATCHv8 2/6] drivers: Update driver registration macro usage Neil Horman
2016-07-07 11:00 ` De Lara Guarch, Pablo
2016-07-07 11:39 ` Neil Horman
2016-07-07 15:37 ` [dpdk-dev] [PATCH] crypto: normalize cryptodev pmd names with macros Neil Horman
2016-07-08 9:09 ` De Lara Guarch, Pablo
2016-07-08 12:17 ` Neil Horman
2016-07-08 12:40 ` Thomas Monjalon
2016-07-08 13:42 ` Neil Horman
2016-07-08 19:03 ` Mcnamara, John
2016-07-09 13:34 ` Neil Horman
2016-07-09 16:04 ` Mcnamara, John
2016-07-08 14:00 ` De Lara Guarch, Pablo
2016-07-08 14:14 ` Neil Horman
2016-07-08 10:03 ` Thomas Monjalon
2016-07-08 16:34 ` [dpdk-dev] [PATCH v2] " Pablo de Lara
2016-07-08 16:46 ` [dpdk-dev] [PATCH v3] " Pablo de Lara
2016-07-08 17:14 ` Thomas Monjalon
2016-06-17 18:46 ` [dpdk-dev] [PATCHv8 3/6] eal: Add an export symbol to expose the autoload path to external tools Neil Horman
2016-06-17 18:46 ` [dpdk-dev] [PATCHv8 4/6] Makefile: Do post processing on objects that register a driver Neil Horman
2016-06-17 18:46 ` [dpdk-dev] [PATCHv8 5/6] pmdinfo.py: Add tool to query binaries for hw and other support information Neil Horman
2016-06-29 15:12 ` Remy Horton
2016-06-29 16:18 ` Neil Horman
2016-06-30 7:45 ` Remy Horton
2016-06-17 18:46 ` [dpdk-dev] [PATCHv8 6/6] doc: Add prog_guide section documenting pmdinfo script Neil Horman
2016-06-29 9:18 ` [dpdk-dev] [PATCHv8 0/6] Implement pmd hardware support exports Remy Horton
2016-06-29 11:31 ` Neil Horman
2016-06-30 7:45 ` Remy Horton
2016-07-06 21:21 ` Thomas Monjalon
2016-07-04 1:13 ` [dpdk-dev] [PATCH v9 0/7] export PMD infos Thomas Monjalon
2016-07-04 1:13 ` [dpdk-dev] [PATCH v9 1/7] drivers: export infos as string symbols Thomas Monjalon
2016-07-04 1:14 ` [dpdk-dev] [PATCH v9 2/7] mk: remove recipe for tool library Thomas Monjalon
2016-07-04 1:14 ` [dpdk-dev] [PATCH v9 3/7] mk: refresh recipe for any host application Thomas Monjalon
2016-07-04 1:14 ` [dpdk-dev] [PATCH v9 4/7] pmdinfogen: parse driver to generate code to export Thomas Monjalon
2016-07-04 1:14 ` [dpdk-dev] [PATCH v9 5/7] mk: link infos generated by pmdinfogen Thomas Monjalon
2016-07-04 1:14 ` [dpdk-dev] [PATCH v9 6/7] eal: export default plugin path to external tools Thomas Monjalon
2016-07-04 1:14 ` [dpdk-dev] [PATCH v9 7/7] tools: query binaries for support information Thomas Monjalon
2016-07-04 12:34 ` [dpdk-dev] [PATCH v9 0/7] export PMD infos Neil Horman
2016-07-04 13:10 ` Thomas Monjalon
2016-07-04 16:41 ` Neil Horman
2016-07-04 20:10 ` Thomas Monjalon
2016-07-05 20:08 ` Neil Horman
2016-07-06 15:33 ` Thomas Monjalon
2016-07-04 15:22 ` Bruce Richardson
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