[PATCH 4.2 122/134] IB/uverbs: reject invalid or unknown opcodes

4.2-stable review patch. If anyone has any objections, please let me know. -- From: Christoph Hellwig commit b632ffa7cee439ba5dce3b3bc4a5cbe2b3e20133 upstream. We have many WR opcodes that are only supported in kernel space and/or require optional information to be copied

[PATCH 4.2 122/134] IB/uverbs: reject invalid or unknown opcodes

4.2-stable review patch. If anyone has any objections, please let me know. -- From: Christoph Hellwig commit b632ffa7cee439ba5dce3b3bc4a5cbe2b3e20133 upstream. We have many WR opcodes that are only supported in kernel space and/or require optional information to