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2019-11-10samples/bpf: Add XDP_SHARED_UMEM support to xdpsockMagnus Karlsson
Add support for the XDP_SHARED_UMEM mode to the xdpsock sample application. As libbpf does not have a built in XDP program for this mode, we use an explicitly loaded XDP program. This also serves as an example on how to write your own XDP program that can route to an AF_XDP socket. Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Tested-by: William Tu <u9012063@gmail.com> Acked-by: Jonathan Lemon <jonathan.lemon@gmail.com> Link: https://lore.kernel.org/bpf/1573148860-30254-3-git-send-email-magnus.karlsson@intel.com
2019-02-25samples/bpf: convert xdpsock to use libbpf for AF_XDP accessMagnus Karlsson
This commit converts the xdpsock sample application to use the AF_XDP functions present in libbpf. This cuts down the size of it by nearly 300 lines of code. The default ring sizes plus the batch size has been increased and the size of the umem area has decreased. This so that the sample application will provide higher throughput. Note also that the shared umem code has been removed from the sample as this is not supported by libbpf at this point in time. Tested-by: Björn Töpel <bjorn.topel@intel.com> Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-09-01samples/bpf: xdpsock, minor fixesPrashant Bhole
- xsks_map size was fixed to 4, changed it MAX_SOCKS - Remove redundant definition of MAX_SOCKS in xdpsock_user.c - In dump_stats(), add NULL check for xsks[i] Signed-off-by: Prashant Bhole <bhole_prashant_q7@lab.ntt.co.jp> Acked-by: Björn Töpel <bjorn.topel@intel.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-05-03samples/bpf: sample application and documentation for AF_XDP socketsMagnus Karlsson
This is a sample application for AF_XDP sockets. The application supports three different modes of operation: rxdrop, txonly and l2fwd. To show-case a simple round-robin load-balancing between a set of sockets in an xskmap, set the RR_LB compile time define option to 1 in "xdpsock.h". v2: The entries variable was calculated twice in {umem,xq}_nb_avail. Co-authored-by: Björn Töpel <bjorn.topel@intel.com> Signed-off-by: Björn Töpel <bjorn.topel@intel.com> Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>