On Wed, Oct 19, 2022 at 09:36:04PM +0800, Geliang Tang wrote:
> This patch implements the redundant BPF MPTCP scheduler, named bpf_red,
> which sends all packets redundantly on all available subflows.
>
> Signed-off-by: Geliang Tang <geliang.tang@suse.com>
> ---
> .../selftests/bpf/progs/mptcp_bpf_red.c | 37 +++++++++++++++++++
> 1 file changed, 37 insertions(+)
> create mode 100644 tools/testing/selftests/bpf/progs/mptcp_bpf_red.c
>
> diff --git a/tools/testing/selftests/bpf/progs/mptcp_bpf_red.c b/tools/testing/selftests/bpf/progs/mptcp_bpf_red.c
> new file mode 100644
> index 000000000000..f8a9b4d1630d
> --- /dev/null
> +++ b/tools/testing/selftests/bpf/progs/mptcp_bpf_red.c
> @@ -0,0 +1,37 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/* Copyright (c) 2022, SUSE. */
> +
> +#include <linux/bpf.h>
> +#include "bpf_tcp_helpers.h"
> +
> +char _license[] SEC("license") = "GPL";
> +
> +SEC("struct_ops/mptcp_sched_red_init")
> +void BPF_PROG(mptcp_sched_red_init, const struct mptcp_sock *msk)
> +{
> +}
> +
> +SEC("struct_ops/mptcp_sched_red_release")
> +void BPF_PROG(mptcp_sched_red_release, const struct mptcp_sock *msk)
> +{
> +}
> +
> +void BPF_STRUCT_OPS(bpf_red_get_subflow, const struct mptcp_sock *msk,
> + struct mptcp_sched_data *data)
> +{
> + for (int i = 0; i < MPTCP_SUBFLOWS_MAX; i++) {
> + if (!data->contexts[i])
> + break;
> +
> + mptcp_subflow_set_scheduled(data->contexts[i], true);
> + }
> +}
> +
> +SEC(".struct_ops")
> +struct mptcp_sched_ops red = {
> + .init = (void *)mptcp_sched_red_init,
> + .release = (void *)mptcp_sched_red_release,
> + .data_init = (void *)bpf_red_data_init,
This line should be dropped. Will update in v15.
-Geliang
> + .get_subflow = (void *)bpf_red_get_subflow,
> + .name = "bpf_red",
> +};
> --
> 2.35.3
>