Commit c06b0229 authored Jun 23, 2020 by Yonghong Song Committed by Alexei Starovoitov Jun 24, 2020

bpf: Support 'X' in bpf_seq_printf() helper



'X' tells kernel to print hex with upper case letters.
/proc/net/tcp{4,6} seq_file show() used this, and
supports it in bpf_seq_printf() helper too.

Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/20200623230807.3988014-1-yhs@fb.com

parent 52d87d5f

kernel/trace/bpf_trace.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -681,7 +681,8 @@ BPF_CALL_5(bpf_seq_printf, struct seq_file , m, char , fmt, u32, fmt_size,
		}

		if (fmt[i] != 'i' && fmt[i] != 'd' &&
		fmt[i] != 'u' && fmt[i] != 'x') {
		fmt[i] != 'u' && fmt[i] != 'x' &&
		fmt[i] != 'X') {
		err = -EINVAL;
		goto out;
		}

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