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| author | Björn Töpel <bjorn.topel@intel.com> | 2018-05-02 14:01:28 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2018-05-04 01:55:24 +0300 |
| commit | fbfc504a24f53f7ebe128ab55cb5dba634f4ece8 (patch) | |
| tree | d88b2d04cf60d5b77a5d794a3e0b006738c47e77 /include/uapi | |
| parent | c497176cb2e478f0a5713b0e05f242276e3194b5 (diff) | |
| download | linux-fbfc504a24f53f7ebe128ab55cb5dba634f4ece8.tar.xz | |
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>
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/linux/bpf.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index 8daef7326bb7..a3a495052511 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -116,6 +116,7 @@ enum bpf_map_type { BPF_MAP_TYPE_DEVMAP, BPF_MAP_TYPE_SOCKMAP, BPF_MAP_TYPE_CPUMAP, + BPF_MAP_TYPE_XSKMAP, }; enum bpf_prog_type { |