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The "struct mana_cfg_rx_steer_req_v2" uses a dynamically sized set of trailing elements. Specifically, it uses a "mana_handle_t" array. So, use the preferred way in the kernel declaring a flexible array [1]. At the same time, prepare for the coming implementation by GCC and Clang of the __counted_by attribute. Flexible array members annotated with __counted_by can have their accesses bounds-checked at run-time via CONFIG_UBSAN_BOUNDS (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family functions). This is a previous step to refactor the two consumers of this structure. drivers/infiniband/hw/mana/qp.c drivers/net/ethernet/microsoft/mana/mana_en.c The ultimate goal is to avoid the open-coded arithmetic in the memory allocator functions [2] using the "struct_size" macro. Link: https://www.kernel.org/doc/html/next/process/deprecated.html#zero-length-and-one-element-arrays [1] Link: https://www.kernel.org/doc/html/next/process/deprecated.html#open-coded-arithmetic-in-allocator-arguments [2] Signed-off-by: Erick Archer <erick.archer@outlook.com> Link: https://lore.kernel.org/r/AS8PR02MB7237E2900247571C9CB84C678B022@AS8PR02MB7237.eurprd02.prod.outlook.com Reviewed-by: Long Li <longli@microsoft.com> Reviewed-by: Justin Stitt <justinstitt@google.com> Signed-off-by: Leon Romanovsky <leon@kernel.org> |
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