| This directory contains logic for priviledged verbs aka user mode control |
| path to support libibverbs. It is based off linux-4.1.15 snapshot of |
| drivers/infiniband/hw/mlx4/. Changes on top of baseline are described |
| here. |
| |
| Some common reasons for changes to baseline source: |
| |
| HF1: Linux source code that #includes standard linux header files eg |
| linux/list.h, linux/idr.h had to be modified since these headers |
| are absent in akaros. |
| |
| HF2: Headers copied from Linux eg rdma/ib_verbs.h were placed in akaros |
| in linux/rdma/ib_verbs.h. |
| |
| HF3: Some changes were done to pull in lesser header files from Linux. |
| |
| Per file listing of changes: |
| |
| user.h, cq.c, doorbell.c, mr.c, srq.c, qp.c, mlx4_ib.h, main.c: HF1 |
| main.c: HF2 |
| mlx4_ib.h: HF3 (ib_sa.h) |
| |
| qp.c: Avoid compiling/linking big chunk of code, while providing |
| panic-stub mandatory function vectors (checked by |
| ib_device_check_mandatory()). |
| |
| main.c: Stubs to reduce including other mlx4/ source files. |
| Akaros version of mlx4_ib_mmap() |
| Akaros does not have dev->dev->persist->pdev->device |
| Akaros does not have dev->persist->pdev->bus->name |
| Sysfs elimination |
| Reduced uverbs_cmd_mask and mlx4 function vector for minimal support |
| No register_netdevice_notifier() and register_inetaddr_notifier() |
| No netdev/inet events ... generally no netdev hook up |
| Panic-stub eth_link_query_port() because dependencies on netdev |
| |
| Makefile: Compilation of this directory depends on CONFIG_MLX4_INFINIBAND, |
| which must be selected in build config. Use -Wno-pointer-sign (for |
| main.c mlx4_ib_add() mlx4_counter_alloc() call) and -include local |
| compatibility header file (sometimes overriding akaros compatibility |
| definitions). |
