| 1 | // SPDX-License-Identifier: GPL-2.0 |
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| 2 | /* Copyright (c) 2021 Facebook */ |
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| 3 | |
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| 4 | #include <stddef.h> |
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| 5 | #include <linux/bpf.h> |
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| 6 | #include <linux/types.h> |
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| 7 | #include <linux/stddef.h> |
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| 8 | #include <linux/tcp.h> |
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| 9 | #include <bpf/bpf_helpers.h> |
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| 10 | #include <bpf/bpf_tracing.h> |
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| 11 | #include "bpf_tcp_helpers.h" |
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| 12 | |
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| 13 | char _license[] SEC("license" ) = "GPL" ; |
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| 14 | const char cubic[] = "cubic" ; |
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| 15 | |
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| 16 | void BPF_STRUCT_OPS(dctcp_nouse_release, struct sock *sk) |
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| 17 | { |
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| 18 | bpf_setsockopt(sk, SOL_TCP, TCP_CONGESTION, |
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| 19 | (void *)cubic, sizeof(cubic)); |
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| 20 | } |
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| 21 | |
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| 22 | SEC(".struct_ops" ) |
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| 23 | struct tcp_congestion_ops dctcp_rel = { |
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| 24 | .release = (void *)dctcp_nouse_release, |
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| 25 | .name = "bpf_dctcp_rel" , |
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| 26 | }; |
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| 27 | |
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