linux/include/rdma, branch v6.4

RDMA/cma: Always set static rate to 0 for RoCE

2023-06-11T08:26:02Z

Set static rate to 0 as it should be discovered by path query and has no meaning for RoCE. This also avoid of using the rtnl lock and ethtool API, which is a bottleneck when try to setup many rdma-cm connections at the same time, especially with multiple processes. Fixes: 3c86aa70bf67 ("RDMA/cm: Add RDMA CM support for IBoE devices") Signed-off-by: Mark Zhang Link: https://lore.kernel.org/r/f72a4f8b667b803aee9fa794069f61afb5839ce4.1685960567.git.leon@kernel.org Signed-off-by: Leon Romanovsky

RDMA: Add ib_virt_dma_to_page()

2023-04-16T08:08:07Z

Make it clearer what is going on by adding a function to go back from the "virtual" dma_addr to a kva and another to a struct page. This is used in the ib_uses_virt_dma() style drivers (siw, rxe, hfi, qib). Call them instead of a naked casting and virt_to_page() when working with dma_addr values encoded by the various ib_map functions. This also fixes the virt_to_page() casting problem Linus Walleij has been chasing. Cc: Linus Walleij Signed-off-by: Jason Gunthorpe Link: https://lore.kernel.org/r/0-v2-05ea785520ed+10-ib_virt_page_jgg@nvidia.com Signed-off-by: Leon Romanovsky

RDMA/umem: Remove unused 'work' member from struct ib_umem

2023-02-12T18:25:25Z

It is not used now. Fixes: b95df5e3e459 ("drivers/IB,core: reduce scope of mmap_sem") Signed-off-by: Jason Gunthorpe Link: https://lore.kernel.org/r/0-v1-22a2667fa089+a3-umem_work_jgg@nvidia.com Reviewed-by: Devesh Sharma Signed-off-by: Leon Romanovsky

RDMA/restrack: Correct spelling

2023-02-07T09:25:10Z

Fix spelling errors. Signed-off-by: Deming Wang Link: https://lore.kernel.org/r/20230206085725.1507-1-wangdeming@inspur.com Signed-off-by: Leon Romanovsky

RDMA/mlx: Calling qp event handler in workqueue context

2023-01-15T10:23:10Z

Move the call of qp event handler from atomic to workqueue context, so that the handler is able to block. This is needed by following patches. Signed-off-by: Mark Zhang Reviewed-by: Patrisious Haddad Link: https://lore.kernel.org/r/0cd17b8331e445f03942f4bb28d447f24ac5669d.1672821186.git.leonro@nvidia.com Signed-off-by: Leon Romanovsky

RDMA/cma: Refactor the inbound/outbound path records process flow

2023-01-10T08:49:50Z

Refactors based on comments [1] of the multiple path records support patchset: - Return failure if not able to set inbound/outbound PRs; - Simplify the flow when receiving the PRs from netlink channel: When a good PR response is received, unpack it and call the path_query callback directly. This saves two memory allocations; - Define RDMA_PRIMARY_PATH_MAX_REC_NUM in a proper place. [1] https://lore.kernel.org/linux-rdma/Yyxp9E9pJtUids2o@nvidia.com/ Signed-off-by: Mark Zhang Reviewed-by: Bart Van Assche #srp Link: https://lore.kernel.org/r/7610025d57342b8b6da0f19516c9612f9c3fdc37.1672819376.git.leonro@nvidia.com Signed-off-by: Leon Romanovsky

RDMA: Extend RDMA kernel verbs ABI to support flush

2022-12-09T23:36:01Z

This commit extends the RDMA kernel verbs ABI to support the flush operation defined in IBA A19.4.1. These changes are backward compatible with the existing RDMA kernel verbs ABI. It makes device/HCA support new FLUSH attributes/capabilities, and it also makes memory region support new FLUSH access flags. Users can use ibv_reg_mr(3) to register flush access flags. Only the access flags also supported by device's capabilities can be registered successfully. Once registered successfully, it means the MR is flushable. Similarly, A flushable MR should also have one or both of GLOBAL_VISIBILITY and PERSISTENT attributes/capabilities like device/HCA. Link: https://lore.kernel.org/r/20221206130201.30986-3-lizhijian@fujitsu.com Reviewed-by: Zhu Yanjun Signed-off-by: Li Zhijian Signed-off-by: Jason Gunthorpe

RDMA: Extend RDMA kernel ABI to support atomic write

2022-12-01T23:51:09Z

1) Define new atomic write request/completion in kernel. 2) Define new atomic write capability in kernel. 3) Define new atomic write opcode for RC service in packet. Link: https://lore.kernel.org/r/1669905432-14-3-git-send-email-yangx.jy@fujitsu.com Signed-off-by: Xiao Yang Signed-off-by: Jason Gunthorpe

RDMA: Add netdevice_tracker to ib_device_set_netdev()

2022-11-28T09:58:19Z

This will cause an informative backtrace to print if the user of ib_device_set_netdev() isn't careful about tearing down the ibdevice before its the netdevice parent is destroyed. Such as like this: unregister_netdevice: waiting for vlan0 to become free. Usage count = 2 leaked reference. ib_device_set_netdev+0x266/0x730 siw_newlink+0x4e0/0xfd0 nldev_newlink+0x35c/0x5c0 rdma_nl_rcv_msg+0x36d/0x690 rdma_nl_rcv+0x2ee/0x430 netlink_unicast+0x543/0x7f0 netlink_sendmsg+0x918/0xe20 sock_sendmsg+0xcf/0x120 ____sys_sendmsg+0x70d/0x8b0 ___sys_sendmsg+0x11d/0x1b0 __sys_sendmsg+0xfa/0x1d0 do_syscall_64+0x35/0xb0 entry_SYSCALL_64_after_hwframe+0x63/0xcd This will help debug the issues syzkaller is seeing. Signed-off-by: Jason Gunthorpe Link: https://lore.kernel.org/r/0-v1-a7c81b3842ce+e5-netdev_tracker_jgg@nvidia.com Signed-off-by: Leon Romanovsky

RDMA/opa_vnic: fix spelling typo in comment

2022-10-19T07:02:37Z

Fix spelling typo in comment. Reported-by: k2ci Signed-off-by: Jiangshan Yi Link: https://lore.kernel.org/r/20221009081047.2643471-1-13667453960@163.com Signed-off-by: Leon Romanovsky