This series add two improvements for the XSKMAP, used by AF_XDP sockets. 1. Automatic cleanup when an AF_XDP socket goes out of scope. Instead of manually cleaning out the "released" state socket from the map, this is done automatically. This mimics the SOCKMAP behavior; Each socket tracks which maps it resides in, and remove itself from those maps at relase. 2. The XSKMAP did not honor the BPF_EXIST/BPF_NOEXIST flag on insert, which this patch addresses. Song, this v3 of the series doesn't have any code changes, it's just a rebase onto the latest bpf-next. You had some questions on the map_entry pointer, but the thread died after that. Thanks, Björn v1->v2: Fixed deadlock and broken cleanup. (Daniel) v2->v3: Rebased onto bpf-next Björn Töpel (2): xsk: remove AF_XDP socket from map when the socket is released xsk: support BPF_EXIST and BPF_NOEXIST flags in XSKMAP include/net/xdp_sock.h | 3 ++ kernel/bpf/xskmap.c | 117 +++++++++++++++++++++++++++++++++++------ net/xdp/xsk.c | 25 +++++++++ 3 files changed, 130 insertions(+), 15 deletions(-) -- 2.20.1
