kernel/net/xdp/Makefile, branch linux-5.1.y

xsk: add sock_diag interface for AF_XDP

2019-01-25T00:50:03Z

This patch adds the sock_diag interface for querying sockets from user space. Tools like iproute2 ss(8) can use this interface to list open AF_XDP sockets. The user-space ABI is defined in linux/xdp_diag.h and includes netlink request and response structs. The request can query sockets and the response contains socket information about the rings, umems, inode and more. Signed-off-by: Björn Töpel Signed-off-by: Daniel Borkmann

xsk: remove newline at end of file

2018-05-18T14:07:02Z

Minor cleanup, remove newline at end of Makefile. Signed-off-by: Björn Töpel Signed-off-by: Daniel Borkmann

xsk: add umem fill queue support and mmap

2018-05-03T22:55:23Z

Here, we add another setsockopt for registered user memory (umem) called XDP_UMEM_FILL_QUEUE. Using this socket option, the process can ask the kernel to allocate a queue (ring buffer) and also mmap it (XDP_UMEM_PGOFF_FILL_QUEUE) into the process. The queue is used to explicitly pass ownership of umem frames from the user process to the kernel. These frames will in a later patch be filled in with Rx packet data by the kernel. v2: Fixed potential crash in xsk_mmap. Signed-off-by: Magnus Karlsson Signed-off-by: Alexei Starovoitov

xsk: add user memory registration support sockopt

2018-05-03T22:55:23Z

In this commit the base structure of the AF_XDP address family is set up. Further, we introduce the abilty register a window of user memory to the kernel via the XDP_UMEM_REG setsockopt syscall. The memory window is viewed by an AF_XDP socket as a set of equally large frames. After a user memory registration all frames are "owned" by the user application, and not the kernel. v2: More robust checks on umem creation and unaccount on error. Call set_page_dirty_lock on cleanup. Simplified xdp_umem_reg. Co-authored-by: Magnus Karlsson Signed-off-by: Magnus Karlsson Signed-off-by: Björn Töpel Signed-off-by: Alexei Starovoitov