bpf, samples: Remove AF_XDP samples

Remove the AF_XDP samples from samples/bpf/ as they are dependent on
the AF_XDP support in libbpf. This support has now been removed in the
1.0 release, so these samples cannot be compiled anymore. Please start
to use libxdp instead. It is backwards compatible with the AF_XDP
support that was offered in libbpf. New samples can be found in the
various xdp-project repositories connected to libxdp and by googling.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Link: https://lore.kernel.org/bpf/20220630093717.8664-1-magnus.karlsson@gmail.com

1 files changed, 0 insertions, 24 deletions

diff --git a/samples/bpf/xdpsock_kern.c b/samples/bpf/xdpsock_kern.c
deleted file mode 100644
index 05430484375c..000000000000
--- a/samples/bpf/xdpsock_kern.c
+++ /dev/null
@@ -1,24 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/bpf.h>
-#include <bpf/bpf_helpers.h>
-#include "xdpsock.h"
-
-/* This XDP program is only needed for the XDP_SHARED_UMEM mode.
- * If you do not use this mode, libbpf can supply an XDP program for you.
- */
-
-struct {
-	__uint(type, BPF_MAP_TYPE_XSKMAP);
-	__uint(max_entries, MAX_SOCKS);
-	__uint(key_size, sizeof(int));
-	__uint(value_size, sizeof(int));
-} xsks_map SEC(".maps");
-
-static unsigned int rr;
-
-SEC("xdp_sock") int xdp_sock_prog(struct xdp_md *ctx)
-{
-	rr = (rr + 1) & (MAX_SOCKS - 1);
-
-	return bpf_redirect_map(&xsks_map, rr, XDP_DROP);
-}