UPSTREAM: 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.

Change-Id: I7c88f9f2c9088a6acb3b2085988de50535b970e6
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
Signed-off-by: Tashfin Shakeer Rhythm <tashfinshakeerrhythm@gmail.com>
This commit is contained in:
Yonghong Song 2020-06-23 16:08:07 -07:00 • committed by basamaryan
commit 3150a87b86
No known key found for this signature in database
GPG key ID: 210D5384FB2A5885

View file

@ -735,7 +735,8 @@ 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;
}