diff mbox series

[bpf-next,1/4] bpf: Disable bh in bpf_test_run for xdp and tc prog

Message ID 20230217004150.2980689-2-martin.lau@linux.dev (mailing list archive)
State Accepted
Delegated to: BPF
Headers show
Series bpf: A fix and a change to bpf_fib_lookup | expand

Checks

Context Check Description
bpf/vmtest-bpf-next-PR success PR summary
netdev/tree_selection success Clearly marked for bpf-next, async
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 36 this patch: 36
netdev/cc_maintainers warning 12 maintainers not CCed: john.fastabend@gmail.com pabeni@redhat.com sdf@google.com kuba@kernel.org jolsa@kernel.org edumazet@google.com song@kernel.org haoluo@google.com yhs@fb.com hawk@kernel.org kpsingh@kernel.org davem@davemloft.net
netdev/build_clang success Errors and warnings before: 1 this patch: 1
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 36 this patch: 36
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 12 lines checked
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Commit Message

Martin KaFai Lau Feb. 17, 2023, 12:41 a.m. UTC 
From: Martin KaFai Lau <martin.lau@kernel.org>

Some of the bpf helpers require bh disabled. eg. The bpf_fib_lookup
helper that will be used in a latter selftest. In particular, it
calls ___neigh_lookup_noref that expects the bh disabled.

This patch disables bh before calling bpf_prog_run[_xdp], so
the testing prog can also use those helpers.

Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
---
 net/bpf/test_run.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/net/bpf/test_run.c b/net/bpf/test_run.c
index 1ab396a2b87f..982e81bba6cf 100644
--- a/net/bpf/test_run.c
+++ b/net/bpf/test_run.c
@@ -413,10 +413,12 @@  static int bpf_test_run(struct bpf_prog *prog, void *ctx, u32 repeat,
 	old_ctx = bpf_set_run_ctx(&run_ctx.run_ctx);
 	do {
 		run_ctx.prog_item = &item;
+		local_bh_disable();
 		if (xdp)
 			*retval = bpf_prog_run_xdp(prog, ctx);
 		else
 			*retval = bpf_prog_run(prog, ctx);
+		local_bh_enable();
 	} while (bpf_test_timer_continue(&t, 1, repeat, &ret, time));
 	bpf_reset_run_ctx(old_ctx);
 	bpf_test_timer_leave(&t);