kernel/include/uapi/rdma/efa-abi.h, branch linux-6.16.y

RDMA/efa: Add option to set QP service level on create

2024-10-21T16:58:07Z

Using modify QP with AH attributes and IB_QP_AV flag set doesn't make much sense for connectionless QP types like SRD. Add SL parameter to EFA create QP user ABI and pass it to the device. Link: https://patch.msgid.link/r/20241015174242.3490-3-mrgolin@amazon.com Reviewed-by: Firas Jahjah Reviewed-by: Yonatan Nachum Signed-off-by: Michael Margolin Signed-off-by: Jason Gunthorpe

RDMA/efa: Support QP with unsolicited write w/ imm. receive

2024-05-08T08:18:26Z

Add a new EFA flags attribute for QP creation, and support unsolicited write with immediate flag. QPs created with this flag set will not consume receive work requests for incoming RDMA write with immediate. Expose device capability bit for this feature support. Reviewed-by: Daniel Kranzdorf Reviewed-by: Firas Jahjah Signed-off-by: Michael Margolin Link: https://lore.kernel.org/r/20240506151829.6475-1-mrgolin@amazon.com Signed-off-by: Leon Romanovsky

RDMA/efa: Add EFA query MR support

2024-01-07T10:02:27Z

Add EFA driver uapi definitions and register a new query MR method that currently returns the physical interconnects the device is using to reach the MR. Update admin definitions and efa-abi accordingly. Reviewed-by: Anas Mousa Reviewed-by: Firas Jahjah Signed-off-by: Michael Margolin Link: https://lore.kernel.org/r/20240104095155.10676-1-mrgolin@amazon.com Signed-off-by: Leon Romanovsky

RDMA/efa: Add rdma write capability to device caps

2023-04-21T22:18:58Z

Add rdma write capability that is propagated from the device to rdma-core. Enable MR creation with remote write permissions according to this device capability. Link: https://lore.kernel.org/r/20230404154313.35194-1-ynachum@amazon.com Reviewed-by: Firas Jahjah Reviewed-by: Michael Margolin Signed-off-by: Yonatan Nachum Signed-off-by: Jason Gunthorpe

RDMA/efa: Add data polling capability feature bit

2023-03-22T17:41:58Z

Add feature bit to existing device caps field. EFA supports data polling of 128 bytes blocks. The flag indicates that the NIC guarentees that a 128 byte aligned block is written in order, ie that observing the last 8 bits of the block mean the prior 127 bytes are also written. It is useful for "last data polling" acceleration techniques. Link: https://lore.kernel.org/r/20230219081328.10419-1-mrgolin@amazon.com Reviewed-by: Yehuda Yitschak Reviewed-by: Yossi Leybovich Signed-off-by: Yonatan Nachum Signed-off-by: Michael Margolin Acked-by: Gal Pressman Signed-off-by: Jason Gunthorpe

RDMA/efa: Support CQ receive entries with source GID

2022-08-21T09:35:59Z

Add a parameter for create CQ admin command to set source address on receive completion descriptors. Report capability for this feature through query device verb. Link: https://lore.kernel.org/r/20220818140449.414-1-mrgolin@amazon.com Reviewed-by: Firas Jahjah Reviewed-by: Yossi Leybovich Signed-off-by: Daniel Kranzdorf Signed-off-by: Michael Margolin Signed-off-by: Leon Romanovsky

RDMA/efa: CQ notifications

2021-10-06T22:47:18Z

This patch adds support for CQ notifications through the standard verbs api. In order to achieve that, a new event queue (EQ) object is introduced, which is in charge of reporting completion events to the driver. On driver load, EQs are allocated and their affinity is set to a single cpu. When a user app creates a CQ with a completion channel, the completion vector number is converted to a EQ number, which is in charge of reporting the CQ events. In addition, the CQ creation admin command now returns an offset for the CQ doorbell, which is mapped to the userspace provider and is used to arm the CQ when requested by the user. The EQs use a single doorbell (located on the registers BAR), which encodes the EQ number and arm as part of the doorbell value. The EQs are polled by the driver on each new EQE, and arm it when the poll is completed. Link: https://lore.kernel.org/r/20211003105605.29222-1-galpress@amazon.com Reviewed-by: Firas JahJah Reviewed-by: Yossi Leybovich Signed-off-by: Gal Pressman Signed-off-by: Jason Gunthorpe

RDMA/efa: Introduce SRD RNR retry

2020-08-18T17:52:45Z

This patch introduces the ability to configure SRD QPs with the RNR retry parameter when issuing a modify QP command. In addition, a capability bit was added to report support to the userspace library. Link: https://lore.kernel.org/r/20200731060420.17053-5-galpress@amazon.com Reviewed-by: Firas JahJah Reviewed-by: Yossi Leybovich Signed-off-by: Gal Pressman Signed-off-by: Jason Gunthorpe

RDMA/efa: User/kernel compatibility handshake mechanism

2020-07-29T12:23:40Z

Introduce a mechanism that performs an handshake between the userspace provider and kernel driver which verifies that the user supports all required features in order to operate correctly. The handshake verifies the needed functionality by comparing the reported device caps and the provider caps. If the device reports a non-zero capability the appropriate comp mask is required from the userspace provider in order to allocate the context. Link: https://lore.kernel.org/r/20200722140312.3651-4-galpress@amazon.com Reviewed-by: Shadi Ammouri Reviewed-by: Yossi Leybovich Signed-off-by: Gal Pressman Signed-off-by: Jason Gunthorpe

RDMA/efa: Expose minimum SQ size

2020-07-29T12:23:39Z

The device reports the minimum SQ size required for creation. This patch queries the min SQ size and reports it back to the userspace library. Link: https://lore.kernel.org/r/20200722140312.3651-3-galpress@amazon.com Reviewed-by: Firas JahJah Reviewed-by: Shadi Ammouri Signed-off-by: Gal Pressman Signed-off-by: Jason Gunthorpe