kernel/linux.git/include/linux/mlx4/qp.h, branch v2.6.32

IB/mlx4: Add strong ordering to local inval and fast reg work requests

2009-06-05T17:36:24+00:00

The ConnectX Programmer's Reference Manual states that the "SO" bit must be set when posting Fast Register and Local Invalidate send work requests. When this bit is set, the work request will be executed only after all previous work requests on the send queue have been executed. (If the bit is not set, Fast Register and Local Invalidate WQEs may begin execution too early, which violates the defined semantics for these operations) This fixes the issue with NFS/RDMA reported in Signed-off-by: Jack Morgenstein Cc: Signed-off-by: Roland Dreier

mlx4_core: Add VLAN tag field to WQE control segment struct

2008-07-25T17:30:06+00:00

Add fields for VLAN tag and insert VLAN tag flag to the control section struct. These fields will be used for sending ethernet packets. Signed-off-by: Yevgeny Petrilin Signed-off-by: Roland Dreier

IB/mlx4: Add support for memory management extensions and local DMA L_Key

2008-07-23T15:12:26+00:00

Add support for the following operations to mlx4 when device firmware supports them: - Send with invalidate and local invalidate send queue work requests; - Allocate/free fast register MRs; - Allocate/free fast register MR page lists; - Fast register MR send queue work requests; - Local DMA L_Key. Signed-off-by: Roland Dreier

IB/mlx4: Rename struct mlx4_lso_seg to mlx4_wqe_lso_seg

2008-07-22T21:19:39+00:00

Make the struct name consistent with other WQE segment struct types defined in . Signed-off-by: Roland Dreier

mlx4_core: Add helper to move QP to ready-to-send

2008-04-25T21:52:32+00:00

Avoid duplicating code in ethernet and FC modules. Signed-off-by: Yevgeny Petrilin Signed-off-by: Roland Dreier

IB/mlx4: Add IPoIB LSO support

2008-04-17T04:09:27+00:00

Add TSO support to the mlx4_ib driver. Signed-off-by: Eli Cohen Signed-off-by: Roland Dreier

IB/mlx4: Add IPoIB checksum offload support

2008-04-17T04:01:10+00:00

ConnectX devices support checksum generation and verification of TCP and UDP packets for UD IPoIB messages. This patch checks if the HCA supports this and sets the IB_DEVICE_UD_IP_CSUM capability flag if it does. It implements support for handling the IB_SEND_IP_CSUM send flag and setting the csum_ok field in receive work completions. Signed-off-by: Eli Cohen Signed-off-by: Ali Ayub Signed-off-by: Roland Dreier

IB/mlx4: Use multiple WQ blocks to post smaller send WQEs

2008-02-08T21:30:02+00:00

ConnectX HCA supports shrinking WQEs, so that a single work request can be made of multiple units of wqe_shift. This way, WRs can differ in size, and do not have to be a power of 2 in size, saving memory and speeding up send WR posting. Unfortunately, if we do this then the wqe_index field in CQEs can't be used to look up the WR ID anymore, so our implementation does this only if selective signaling is off. Further, on 32-bit platforms, we can't use vmap() to make the QP buffer virtually contigious. Thus we have to use constant-sized WRs to make sure a WR is always fully within a single page-sized chunk. Finally, we use WRs with the NOP opcode to avoid wrapping around the queue buffer in the middle of posting a WR, and we set the NoErrorCompletion bit to avoid getting completions with error for NOP WRs. However, NEC is only supported starting with firmware 2.2.232, so we use constant-sized WRs for older firmware. And, since MLX QPs only support SEND, we use constant-sized WRs in this case. When stamping during NOP posting, do stamping following setting of the NOP WQE valid bit. Signed-off-by: Michael S. Tsirkin Signed-off-by: Jack Morgenstein Signed-off-by: Roland Dreier

IB/mlx4: Implement query QP

2007-07-12T22:41:00+00:00

Signed-off-by: Jack Morgenstein Signed-off-by: Roland Dreier

IB/mlx4: Make sure inline data segments don't cross a 64 byte boundary

2007-06-18T16:23:47+00:00

Inline data segments in send WQEs are not allowed to cross a 64 byte boundary. We use inline data segments to hold the UD headers for MLX QPs (QP0 and QP1). A send with GRH on QP1 will have a UD header that is too big to fit in a single inline data segment without crossing a 64 byte boundary, so split the header into two inline data segments. Signed-off-by: Roland Dreier