Merge branch 'Align BPF TCP CCs implementing cong_control() with non-BPF CCs'

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Jörn-Thorben Hinz says:

====================

This series corrects some inconveniences for a BPF TCP CC that
implements and uses tcp_congestion_ops.cong_control(). Until now, such a
CC did not have all necessary write access to struct sock and
unnecessarily needed to implement cong_avoid().

v4:
 - Remove braces around single statements after if
 - Don’t check pointer passed to bpf_link__destroy()
v3:
 - Add a selftest writing sk_pacing_*
 - Add a selftest with incomplete tcp_congestion_ops
 - Add a selftest with unsupported get_info()
 - Remove an unused variable
 - Reword a comment about reg() in bpf_struct_ops_map_update_elem()
v2:
 - Drop redundant check for required functions and just rely on
   tcp_register_congestion_control() (Martin KaFai Lau)
====================

Reviewed-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

...

This commit is contained in:

Alexei Starovoitov 2022-06-23 09:49:58 -07:00

parent 9676feccac f14a3f644a

commit bb7a425789

6 changed files with 186 additions and 37 deletions

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7

kernel/bpf/bpf_struct_ops.c

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39

net/ipv4/bpf_tcp_ca.c

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61

tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c

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35

tools/testing/selftests/bpf/progs/tcp_ca_incompl_cong_ops.c

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21

tools/testing/selftests/bpf/progs/tcp_ca_unsupp_cong_op.c

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60

tools/testing/selftests/bpf/progs/tcp_ca_write_sk_pacing.c

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