Align BPF TCP CCs implementing cong_control() with non-BPF CCs #3135
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Master branch: d352bd8 |
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At least one diff in series https://patchwork.kernel.org/project/netdevbpf/list/?series=648595 expired. Closing PR. |
A CC that implements tcp_congestion_ops.cong_control() should be able to control sk_pacing_rate and set sk_pacing_status, since tcp_update_pacing_rate() is never called in this case. A built-in CC or one from a kernel module is already able to write to both struct sock members. For a BPF program, write access has not been allowed, yet. Signed-off-by: Jörn-Thorben Hinz <jthinz@mailbox.tu-berlin.de>
Remove the check for required and optional functions in a struct tcp_congestion_ops from bpf_tcp_ca.c. Rely on tcp_register_congestion_control() to reject a BPF CC that does not implement all required functions, as it will do for a non-BPF CC. When a CC implements tcp_congestion_ops.cong_control(), the alternate cong_avoid() is not in use in the TCP stack. Previously, a BPF CC was still forced to implement cong_avoid() as a no-op since it was non-optional in bpf_tcp_ca.c. Signed-off-by: Jörn-Thorben Hinz <jthinz@mailbox.tu-berlin.de>
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Master branch: fe92833 |
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At least one diff in series https://patchwork.kernel.org/project/netdevbpf/list/?series=648987 expired. Closing PR. |
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Pull request for series with
subject: Align BPF TCP CCs implementing cong_control() with non-BPF CCs
version: 1
url: https://patchwork.kernel.org/project/netdevbpf/list/?series=648595