android_kernel_motorola_sm6225/net/xdp
Björn Töpel fbfc504a24 bpf: introduce new bpf AF_XDP map type BPF_MAP_TYPE_XSKMAP
The xskmap is yet another BPF map, very much inspired by
dev/cpu/sockmap, and is a holder of AF_XDP sockets. A user application
adds AF_XDP sockets into the map, and by using the bpf_redirect_map
helper, an XDP program can redirect XDP frames to an AF_XDP socket.

Note that a socket that is bound to certain ifindex/queue index will
*only* accept XDP frames from that netdev/queue index. If an XDP
program tries to redirect from a netdev/queue index other than what
the socket is bound to, the frame will not be received on the socket.

A socket can reside in multiple maps.

v3: Fixed race and simplified code.
v2: Removed one indirection in map lookup.

Signed-off-by: Björn Töpel <bjorn.topel@intel.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-05-03 15:55:24 -07:00
..
Kconfig
Makefile xsk: add umem fill queue support and mmap 2018-05-03 15:55:23 -07:00
xdp_umem.c xsk: add support for bind for Rx 2018-05-03 15:55:23 -07:00
xdp_umem.h xsk: add Rx receive functions and poll support 2018-05-03 15:55:24 -07:00
xdp_umem_props.h xsk: add user memory registration support sockopt 2018-05-03 15:55:23 -07:00
xsk.c bpf: introduce new bpf AF_XDP map type BPF_MAP_TYPE_XSKMAP 2018-05-03 15:55:24 -07:00
xsk_queue.c xsk: add support for bind for Rx 2018-05-03 15:55:23 -07:00
xsk_queue.h xsk: add Rx receive functions and poll support 2018-05-03 15:55:24 -07:00