From: Paolo Pisati paolo.pisati@canonical.com
With this change, bpf_csum_diff behave homogeneously among different checksum calculation code / csum_partial() (tested on x86-64, arm64 and arm).
Signed-off-by: Paolo Pisati paolo.pisati@canonical.com --- net/core/filter.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/core/filter.c b/net/core/filter.c index f615e42cf4ef..8db7f58f1ea1 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -1990,7 +1990,7 @@ BPF_CALL_5(bpf_csum_diff, __be32 *, from, u32, from_size, for (i = 0; i < to_size / sizeof(__be32); i++, j++) sp->diff[j] = to[i];
- return csum_partial(sp->diff, diff_size, seed); + return csum_fold(csum_partial(sp->diff, diff_size, seed)); }
static const struct bpf_func_proto bpf_csum_diff_proto = {