Re: [PATCH REPOST v5 iproute2 0/8] RDMAtool

Stephen Hemminger
2017-08-18T01:01:18Z

On Thu, 17 Aug 2017 09:56:06 +0300
Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org> wrote:

> This is fifth revision of series implementing the RDAMtool - the tool
> to configure RDMA devices.
>
> It looks like everyone who was interested to read cover letter already did it,
> so I'll start from the changelog:
>
> Changelog:
> v4->v5:
> * Rebased to latest net-next branch
> * Moved BIT() macro from devlink to general utils.h file - Patch #1.
> * Changed the order of patches - moved man pages to be last patch.
> * Rewrote all switch->case->return_string constructions to be static
> tables with help of David's macro magic. Thanks a lot.
> * Dropped dependency on exported device and port properties. Now tool depends
> on RDMA netlink only and all needed code is already in Doug's for-next.
> * Added two OPA specific physical link states, because their names is
> too broad - TEST and OFFLINE, I named it as OPA_TEST and OPA_OFFLINE.
> v3->v4:
> * Rebased to latest net-next branch
> * Added JSON output -j (json) and -p (pretty output)
> * Exported and reused kernel UAPIs and defines instead of hard coded
> version.
> v2->v3:
> * Removed MAX()
> * Reduced scope of rd_argv_match
> * Removed return from rdma_free_devmap
> * Added extra break at rdma_send_msg
> v1->v2:
> * Squashed multiple (and similar) patches to be one patch for dev object
> and one patch for link object.
> * Removed port_map struct
> * Removed global netlink dump during initialization, it removed the need to store
> the intermediate variables and reuse ability of netlink to signal if variable
> exists or doesn't.
> * Added "-d" --details option and put all CAPs under it.
>
> v0->v1:
> * Moved hunk with changes in man/Makefile from first patch to the last patch
> * Removed the "unknown command" from the examples in commit messages
> * Removed special "caps" parsing command and put it to be part of general "show" command
> * Changed parsed capability format to be similar to iproute2 suite
> * Added FW version as an output of show command.
> * Added forgotten CAP_FLAGS to the nla_policy list
> RFC->v0:
> * Removed everything that is not implemented yet.
> * Abandoned sysfs interfaces in favor of netlink.
>
> -----
> The initial proposal was sent as RFC [1] and was based on sysfs entries as POC.
>
> The current series was rewritten completely to work with RDMA netlinks as
> a source of user<->kernel communications. In order to achieve that, the
> RDMA netlinks were extensively refactored and modernized [2, 3, 4 and 5].
>
> The Doug's for-next tag includes most of the needed patches for this tool.
>
> The following is an example of various runs on my machine with 5 devices
> (4 in IB mode and one in Ethernet mode).
>
> ### Without parameters
> $ rdma
> Usage: rdma [ OPTIONS ] OBJECT { COMMAND | help }
> where OBJECT := { dev | link | help }
> OPTIONS := { -V[ersion] | -d[etails] | -j[son] | -p[retty]}
>
> ### With unspecified device name
> $ rdma dev
> 1: mlx5_0: node_type ca fw 2.8.9999 node_guid 5254:00c0:fe12:3457 sys_image_guid 5254:00c0:fe12:3457
> 2: mlx5_1: node_type ca fw 2.8.9999 node_guid 5254:00c0:fe12:3458 sys_image_guid 5254:00c0:fe12:3458
> 3: mlx5_2: node_type ca fw 2.8.9999 node_guid 5254:00c0:fe12:3459 sys_image_guid 5254:00c0:fe12:3459
> 4: mlx5_3: node_type ca fw 2.8.9999 node_guid 5254:00c0:fe12:345a sys_image_guid 5254:00c0:fe12:345a
> 5: mlx5_4: node_type ca fw 2.8.9999 node_guid 5254:00c0:fe12:345b sys_image_guid 5254:00c0:fe12:345b
>
> ### Detailed mode
> $ rdma -d dev
> 1: mlx5_0: node_type ca fw 2.8.9999 node_guid 5254:00c0:fe12:3457 sys_image_guid 5254:00c0:fe12:3457
> caps: <BAD_PKEY_CNTR, BAD_QKEY_CNTR, CHANGE_PHY_POR, PORT_ACTIVE_EVENT, SYS_IMAGE_GUID, RC_RNR_NAK_GEN, MEM_WINDOW, UD_IP_CSUM, UD_TSO, XRC, MEM_MGT_EXTENSIONS, BLOCK_MULTICAST_LOOPBACK, MEM_WINDOW_TYPE_2B, RAW_IP_CSUM, MANAGED_FLOW_STEERING, RESIZE_MAX_WR>
> 2: mlx5_1: node_type ca fw 2.8.9999 node_guid 5254:00c0:fe12:3458 sys_image_guid 5254:00c0:fe12:3458
> caps: <BAD_PKEY_CNTR, BAD_QKEY_CNTR, CHANGE_PHY_POR, PORT_ACTIVE_EVENT, SYS_IMAGE_GUID, RC_RNR_NAK_GEN, MEM_WINDOW, UD_IP_CSUM, UD_TSO, XRC, MEM_MGT_EXTENSIONS, BLOCK_MULTICAST_LOOPBACK, MEM_WINDOW_TYPE_2B, RAW_IP_CSUM, MANAGED_FLOW_STEERING, RESIZE_MAX_WR>
> 3: mlx5_2: node_type ca fw 2.8.9999 node_guid 5254:00c0:fe12:3459 sys_image_guid 5254:00c0:fe12:3459
> caps: <BAD_PKEY_CNTR, BAD_QKEY_CNTR, CHANGE_PHY_POR, PORT_ACTIVE_EVENT, SYS_IMAGE_GUID, RC_RNR_NAK_GEN, MEM_WINDOW, UD_IP_CSUM, UD_TSO, XRC, MEM_MGT_EXTENSIONS, BLOCK_MULTICAST_LOOPBACK, MEM_WINDOW_TYPE_2B, RAW_IP_CSUM, MANAGED_FLOW_STEERING, RESIZE_MAX_WR>
> 4: mlx5_3: node_type ca fw 2.8.9999 node_guid 5254:00c0:fe12:345a sys_image_guid 5254:00c0:fe12:345a
> caps: <BAD_PKEY_CNTR, BAD_QKEY_CNTR, CHANGE_PHY_POR, PORT_ACTIVE_EVENT, SYS_IMAGE_GUID, RC_RNR_NAK_GEN, MEM_WINDOW, UD_IP_CSUM, UD_TSO, XRC, MEM_MGT_EXTENSIONS, BLOCK_MULTICAST_LOOPBACK, MEM_WINDOW_TYPE_2B, RAW_IP_CSUM, MANAGED_FLOW_STEERING, RESIZE_MAX_WR>
> 5: mlx5_4: node_type ca fw 2.8.9999 node_guid 5254:00c0:fe12:345b sys_image_guid 5254:00c0:fe12:345b
> caps: <BAD_PKEY_CNTR, BAD_QKEY_CNTR, CHANGE_PHY_POR, PORT_ACTIVE_EVENT, SYS_IMAGE_GUID, RC_RNR_NAK_GEN, MEM_WINDOW, UD_IP_CSUM, UD_TSO, XRC, MEM_MGT_EXTENSIONS, BLOCK_MULTICAST_LOOPBACK, MEM_WINDOW_TYPE_2B, RAW_IP_CSUM, MANAGED_FLOW_STEERING, RESIZE_MAX_WR>
>
> ### Specific device
> $ rdma dev show mlx5_4
> 5: mlx5_4: node_type ca fw 2.8.9999 node_guid 5254:00c0:fe12:345b sys_image_guid 5254:00c0:fe12:345b
>
> ### Specific device in detailed mode
> $ rdma dev show mlx5_4 -d
> 5: mlx5_4: node_type ca fw 2.8.9999 node_guid 5254:00c0:fe12:345b sys_image_guid 5254:00c0:fe12:345b
> caps: <BAD_PKEY_CNTR, BAD_QKEY_CNTR, CHANGE_PHY_POR, PORT_ACTIVE_EVENT, SYS_IMAGE_GUID, RC_RNR_NAK_GEN, MEM_WINDOW, UD_IP_CSUM, UD_TSO, XRC, MEM_MGT_EXTENSIONS, BLOCK_MULTICAST_LOOPBACK, MEM_WINDOW_TYPE_2B, RAW_IP_CSUM, MANAGED_FLOW_STEERING, RESIZE_MAX_WR>
>
> ### Unknown command (caps)
> $ rdma dev show mlx5_4 caps
> Unknown parameter 'caps'.
>
> ### Link properties without device name
> $ rdma link
> 1/1: mlx5_0/1: subnet_prefix fe80:0000:0000:0000 lid 13399 sm_lid 49151 lmc 0 state ACTIVE physical_state LINK_UP
> 2/1: mlx5_1/1: subnet_prefix fe80:0000:0000:0000 lid 13400 sm_lid 49151 lmc 0 state ACTIVE physical_state LINK_UP
> 3/1: mlx5_2/1: subnet_prefix fe80:0000:0000:0000 lid 13401 sm_lid 49151 lmc 0 state ACTIVE physical_state LINK_UP
> 4/1: mlx5_3/1: state DOWN physical_state DISABLED
> 5/1: mlx5_4/1: subnet_prefix fe80:0000:0000:0000 lid 13403 sm_lid 49151 lmc 0 state ACTIVE physical_state LINK_UP
>
> ### Link properties in detailed mode
> $ rdma link -d
> 1/1: mlx5_0/1: subnet_prefix fe80:0000:0000:0000 lid 13399 sm_lid 49151 lmc 0 state ACTIVE physical_state LINK_UP
> caps: <AUTO_MIGR>
> 2/1: mlx5_1/1: subnet_prefix fe80:0000:0000:0000 lid 13400 sm_lid 49151 lmc 0 state ACTIVE physical_state LINK_UP
> caps: <AUTO_MIGR>
> 3/1: mlx5_2/1: subnet_prefix fe80:0000:0000:0000 lid 13401 sm_lid 49151 lmc 0 state ACTIVE physical_state LINK_UP
> caps: <AUTO_MIGR>
> 4/1: mlx5_3/1: state DOWN physical_state DISABLED
> caps: <CM, IP_BASED_GIDS>
> 5/1: mlx5_4/1: subnet_prefix fe80:0000:0000:0000 lid 13403 sm_lid 49151 lmc 0 state ACTIVE physical_state LINK_UP
> caps: <AUTO_MIGR>
>
> ### All links for specific device
> $ rdma link show mlx5_3
> 1/1: mlx5_0/1: subnet_prefix fe80:0000:0000:0000 lid 13399 sm_lid 49151 lmc 0 state ACTIVE physical_state LINK_UP
>
> ### Detailed link properties for specific device
> $ rdma link -d show mlx5_3
> 1/1: mlx5_0/1: subnet_prefix fe80:0000:0000:0000 lid 13399 sm_lid 49151 lmc 0 state ACTIVE physical_state LINK_UP
> caps: <AUTO_MIGR>
>
> ### Specific port for specific device
> $ rdma link show mlx5_4/1
> 1/1: mlx5_0/1: subnet_prefix fe80:0000:0000:0000 lid 13399 sm_lid 49151 lmc 0 state ACTIVE physical_state LINK_UP
>
> ### Unknown parameter
> $ rdma link show mlx5_4/1 caps
> Unknown parameter 'caps'.
>
> Thanks
>
> Available in the "topic/rdmatool-netlink-v5" topic branch of this git repo:
> git://git.kernel.org/pub/scm/linux/kernel/git/leon/iproute2.git
>
> Or for browsing:
> https://git.kernel.org/cgit/linux/kernel/git/leon/iproute2.git/log/?h=topic/rdmatool-netlink-v5
>
> Thanks
>
> [1] https://www.spinics.net/lists/linux-rdma/msg49575.html
> [2] https://patchwork.kernel.org/patch/9752865/
> [3] https://www.spinics.net/lists/linux-rdma/msg50827.html
> [4] https://www.spinics.net/lists/linux-rdma/msg51210.html
> [5] https://patchwork.kernel.org/patch/9811729/ and https://patchwork.kernel.org/patch/9811731/]
>
> Cc: Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
> Cc: Dennis Dalessandro <dennis.dalessandro-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
> Cc: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
> Cc: Jiri Pirko <jiri-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
> Cc: Ariel Almog <ariela-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
> Cc: David Laight <David.Laight-ZS65k/vG3HxXrIkS9f7CXA@public.gmane.org>
> Cc: Linux Netdev <netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
>
> Leon Romanovsky (8):
> utils: Move BIT macro to common header
> rdma: Add basic infrastructure for RDMA tool
> rdma: Add dev object
> rdma: Add link object
> rdma: Add json and pretty outputs
> rdma: Implement json output for dev object
> rdma: Add json output to link object
> rdma: Add initial manual for the tool
>
> Makefile | 2 +-
> devlink/devlink.c | 2 +-
> include/utils.h | 2 +
> man/man8/rdma-dev.8 | 55 +++++++++
> man/man8/rdma-link.8 | 55 +++++++++
> man/man8/rdma.8 | 102 +++++++++++++++
> rdma/.gitignore | 1 +
> rdma/Makefile | 22 ++++
> rdma/dev.c | 284 ++++++++++++++++++++++++++++++++++++++++++
> rdma/link.c | 343 +++++++++++++++++++++++++++++++++++++++++++++++++++
> rdma/rdma.c | 143 +++++++++++++++++++++
> rdma/rdma.h | 93 ++++++++++++++
> rdma/utils.c | 266 +++++++++++++++++++++++++++++++++++++++
> 13 files changed, 1368 insertions(+), 2 deletions(-)
> create mode 100644 man/man8/rdma-dev.8
> create mode 100644 man/man8/rdma-link.8
> create mode 100644 man/man8/rdma.8
> create mode 100644 rdma/.gitignore
> create mode 100644 rdma/Makefile
> create mode 100644 rdma/dev.c
> create mode 100644 rdma/link.c
> create mode 100644 rdma/rdma.c
> create mode 100644 rdma/rdma.h
> create mode 100644 rdma/utils.c
>
> --
> 2.14.1
>

Wanted to apply this (to net-next), but build fails:

rdma
make[1]: Entering directory '/var/src/iproute2-net-next/rdma'
CC rdma.o
rdma.c: In function ‘rd_init’:
rdma.c:64:21: error: ‘RDMA_NLDEV_CMD_GET’ undeclared (first use in this function)
rd_prepare_msg(rd, RDMA_NLDEV_CMD_GET,
^~~~~~~~~~~~~~~~~~

I think you are depending on some header file that has a more recent version
on your system. Iproute2 has its own include/ directory to deal with this
type of override. Already have headers for kernel and iptables.
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