BMC/Intel-BMC/linux.git/include/rdma/opa_vnic.h, branch dev-5.7

RDMA: Replace zero-length array with flexible-array member

2020-02-20T17:33:51+00:00

The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertently introduced[3] to the codebase from now on. Also, notice that, dynamic memory allocations won't be affected by this change: "Flexible array members have incomplete type, and so the sizeof operator may not be applied. As a quirk of the original implementation of zero-length arrays, sizeof evaluates to zero."[1] This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732932f ("cxgb3/l2t: Fix undefined behaviour") Link: https://lore.kernel.org/r/20200213010425.GA13068@embeddedor.com Signed-off-by: Gustavo A. R. Silva Signed-off-by: Jason Gunthorpe # added a few more

IB/hfi1: Add support to receive 16B bypass packets

2017-08-22T18:22:37+00:00

We introduce a struct hfi1_16b_header to support 16B headers. 16B bypass packets are received by the driver and processed similar to 9B packets. Add basic support to handle 16B packets. Reviewed-by: Dennis Dalessandro Signed-off-by: Don Hiatt Signed-off-by: Dennis Dalessandro Signed-off-by: Doug Ledford

IB/opa-vnic: Virtual Network Interface Controller (VNIC) interface

2017-04-20T16:01:38+00:00

Define OPA VNIC interface between hardware independent VNIC functionality and the hardware dependent VNIC functionality. Reviewed-by: Dennis Dalessandro Reviewed-by: Ira Weiny Signed-off-by: Niranjana Vishwanathapura Signed-off-by: Doug Ledford