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| author | Björn Töpel <bjorn.topel@intel.com> | 2021-03-08 12:29:06 +0100 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2021-03-10 01:06:34 +0100 |
| commit | e6a4750ffe9d701c4d55212b14b615e63571d235 (patch) | |
| tree | 0e807fb18dde8e4d6c7eb0495f25be9183bfdb2c /include/net/xdp_sock.h | |
| parent | 11d39cfeecfc9d92a5faa2a55c228e796478e0cb (diff) | |
| download | linux-e6a4750ffe9d701c4d55212b14b615e63571d235.tar.gz linux-e6a4750ffe9d701c4d55212b14b615e63571d235.tar.bz2 linux-e6a4750ffe9d701c4d55212b14b615e63571d235.zip | |
bpf, xdp: Make bpf_redirect_map() a map operation
Currently the bpf_redirect_map() implementation dispatches to the
correct map-lookup function via a switch-statement. To avoid the
dispatching, this change adds bpf_redirect_map() as a map
operation. Each map provides its bpf_redirect_map() version, and
correct function is automatically selected by the BPF verifier.
A nice side-effect of the code movement is that the map lookup
functions are now local to the map implementation files, which removes
one additional function call.
Signed-off-by: Björn Töpel <bjorn.topel@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://lore.kernel.org/bpf/20210308112907.559576-2-bjorn.topel@gmail.com
Diffstat (limited to 'include/net/xdp_sock.h')
| -rw-r--r-- | include/net/xdp_sock.h | 19 |
1 files changed, 0 insertions, 19 deletions
diff --git a/include/net/xdp_sock.h b/include/net/xdp_sock.h index cc17bc957548..9c0722c6d7ac 100644 --- a/include/net/xdp_sock.h +++ b/include/net/xdp_sock.h @@ -80,19 +80,6 @@ int xsk_generic_rcv(struct xdp_sock *xs, struct xdp_buff *xdp); int __xsk_map_redirect(struct xdp_sock *xs, struct xdp_buff *xdp); void __xsk_map_flush(void); -static inline struct xdp_sock *__xsk_map_lookup_elem(struct bpf_map *map, - u32 key) -{ - struct xsk_map *m = container_of(map, struct xsk_map, map); - struct xdp_sock *xs; - - if (key >= map->max_entries) - return NULL; - - xs = READ_ONCE(m->xsk_map[key]); - return xs; -} - #else static inline int xsk_generic_rcv(struct xdp_sock *xs, struct xdp_buff *xdp) @@ -109,12 +96,6 @@ static inline void __xsk_map_flush(void) { } -static inline struct xdp_sock *__xsk_map_lookup_elem(struct bpf_map *map, - u32 key) -{ - return NULL; -} - #endif /* CONFIG_XDP_SOCKETS */ #endif /* _LINUX_XDP_SOCK_H */ |