diff options
| 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/net/xdp_sock.h | |
| 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/net/xdp_sock.h')
| -rw-r--r-- | include/net/xdp_sock.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/net/xdp_sock.h b/include/net/xdp_sock.h index a0342dff6a4d..ce3a2ab16b8f 100644 --- a/include/net/xdp_sock.h +++ b/include/net/xdp_sock.h @@ -28,6 +28,7 @@ struct xdp_sock { struct xsk_queue *rx; struct net_device *dev; struct xdp_umem *umem; + struct list_head flush_node; u16 queue_id; /* Protects multiple processes in the control path */ struct mutex mutex; @@ -39,6 +40,7 @@ struct xdp_buff; int xsk_generic_rcv(struct xdp_sock *xs, struct xdp_buff *xdp); int xsk_rcv(struct xdp_sock *xs, struct xdp_buff *xdp); void xsk_flush(struct xdp_sock *xs); +bool xsk_is_setup_for_bpf_map(struct xdp_sock *xs); #else static inline int xsk_generic_rcv(struct xdp_sock *xs, struct xdp_buff *xdp) { @@ -53,6 +55,11 @@ static inline int xsk_rcv(struct xdp_sock *xs, struct xdp_buff *xdp) static inline void xsk_flush(struct xdp_sock *xs) { } + +static inline bool xsk_is_setup_for_bpf_map(struct xdp_sock *xs) +{ + return false; +} #endif /* CONFIG_XDP_SOCKETS */ #endif /* _LINUX_XDP_SOCK_H */ |