Revision tags: v6.6.25, v6.6.24, v6.6.23, v6.6.16, v6.6.15, v6.6.14, v6.6.13, v6.6.12, v6.6.11, v6.6.10, v6.6.9, v6.6.8, v6.6.7, v6.6.6, v6.6.5, v6.6.4, v6.6.3, v6.6.2, v6.5.11, v6.6.1, v6.5.10, v6.6, v6.5.9, v6.5.8, v6.5.7, v6.5.6, v6.5.5, v6.5.4, v6.5.3, v6.5.2, v6.1.51, v6.5.1, v6.1.50, v6.5, v6.1.49, v6.1.48, v6.1.46, v6.1.45, v6.1.44, v6.1.43, v6.1.42, v6.1.41, v6.1.40, v6.1.39, v6.1.38, v6.1.37, v6.1.36, v6.4, v6.1.35, v6.1.34, v6.1.33, v6.1.32, v6.1.31, v6.1.30, v6.1.29, v6.1.28, v6.1.27, v6.1.26, v6.3, v6.1.25, v6.1.24, v6.1.23, v6.1.22, v6.1.21 |
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c0ba8611 |
| 20-Mar-2023 |
Jakub Kicinski <kuba@kernel.org> |
net: skbuff: move the fields BPF cares about directly next to the offset marker
To avoid more possible BPF dependencies with moving bitfields around keep the fields BPF cares about right next to the
net: skbuff: move the fields BPF cares about directly next to the offset marker
To avoid more possible BPF dependencies with moving bitfields around keep the fields BPF cares about right next to the offset marker.
Signed-off-by: Jakub Kicinski <kuba@kernel.org> Link: https://lore.kernel.org/r/20230321014115.997841-4-kuba@kernel.org Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
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04aae213 |
| 20-Mar-2023 |
Jakub Kicinski <kuba@kernel.org> |
net: skbuff: rename __pkt_vlan_present_offset to __mono_tc_offset
vlan_present is gone since commit 354259fa73e2 ("net: remove skb->vlan_present") rename the offset field to what BPF is currently lo
net: skbuff: rename __pkt_vlan_present_offset to __mono_tc_offset
vlan_present is gone since commit 354259fa73e2 ("net: remove skb->vlan_present") rename the offset field to what BPF is currently looking for in this byte - mono_delivery_time and tc_at_ingress.
Signed-off-by: Jakub Kicinski <kuba@kernel.org> Link: https://lore.kernel.org/r/20230321014115.997841-2-kuba@kernel.org Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
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Revision tags: v6.1.20, v6.1.19, v6.1.18, v6.1.17, v6.1.16 |
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71cf4d02 |
| 03-Mar-2023 |
Eduard Zingerman <eddyz87@gmail.com> |
selftests/bpf: Disassembler tests for verifier.c:convert_ctx_access()
Function verifier.c:convert_ctx_access() applies some rewrites to BPF instructions that read or write BPF program context. This
selftests/bpf: Disassembler tests for verifier.c:convert_ctx_access()
Function verifier.c:convert_ctx_access() applies some rewrites to BPF instructions that read or write BPF program context. This commit adds machinery to allow test cases that inspect BPF program after these rewrites are applied.
An example of a test case:
{ // Shorthand for field offset and size specification N(CGROUP_SOCKOPT, struct bpf_sockopt, retval),
// Pattern generated for field read .read = "$dst = *(u64 *)($ctx + bpf_sockopt_kern::current_task);" "$dst = *(u64 *)($dst + task_struct::bpf_ctx);" "$dst = *(u32 *)($dst + bpf_cg_run_ctx::retval);",
// Pattern generated for field write .write = "*(u64 *)($ctx + bpf_sockopt_kern::tmp_reg) = r9;" "r9 = *(u64 *)($ctx + bpf_sockopt_kern::current_task);" "r9 = *(u64 *)(r9 + task_struct::bpf_ctx);" "*(u32 *)(r9 + bpf_cg_run_ctx::retval) = $src;" "r9 = *(u64 *)($ctx + bpf_sockopt_kern::tmp_reg);" , },
For each test case, up to three programs are created: - One that uses BPF_LDX_MEM to read the context field. - One that uses BPF_STX_MEM to write to the context field. - One that uses BPF_ST_MEM to write to the context field.
The disassembly of each program is compared with the pattern specified in the test case.
Kernel code for disassembly is reused (as is in the bpftool). To keep Makefile changes to the minimum, symbolic links to `kernel/bpf/disasm.c` and `kernel/bpf/disasm.h ` are added.
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://lore.kernel.org/r/20230304011247.566040-4-eddyz87@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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