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2022-06-30selftests/xsk: Introduce XDP prog load based on existing AF_XDP socketMaciej Fijalkowski1-0/+1
Currently, xsk_setup_xdp_prog() uses anonymous xsk_socket struct which means that during xsk_create_bpf_link() call, xsk->config.xdp_flags is always 0. This in turn means that from xdpxceiver it is impossible to use xdpgeneric attachment, so since commit 3b22523bca02 ("selftests, xsk: Fix bpf_res cleanup test") we were not testing SKB mode at all. To fix this, introduce a function, called xsk_setup_xdp_prog_xsk(), that will load XDP prog based on the existing xsk_socket, so that xsk context's refcount is correctly bumped and flags from application side are respected. Use this from xdpxceiver side so we get coverage of generic and native XDP program attach points. Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Magnus Karlsson <magnus.karlsson@intel.com> Link: https://lore.kernel.org/bpf/20220629143458.934337-3-maciej.fijalkowski@intel.com
2022-06-28libbpf: move xsk.{c,h} into selftests/bpfAndrii Nakryiko1-0/+315
Remove deprecated xsk APIs from libbpf. But given we have selftests relying on this, move those files (with minimal adjustments to make them compilable) under selftests/bpf. We also remove all the removed APIs from libbpf.map, while overall keeping version inheritance chain, as most APIs are backwards compatible so there is no need to reassign them as LIBBPF_1.0.0 versions. Cc: Magnus Karlsson <magnus.karlsson@gmail.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/r/20220627211527.2245459-2-andrii@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org>