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bpf: allow access to skb->len from offloads

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Since we are now doing strict checking of what offloads
may access, make sure skb->len is on that list.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jakub Kicinski
2017-10-16 16:40:56 -07:00
committed by David S. Miller
parent 4f9218aaf8
commit 29d1b33a2e
1 changed files with 2 additions and 0 deletions
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2
net/core/filter.c
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@@ -3738,6 +3738,8 @@ tc_cls_act_is_valid_access_analyzer(int off, int size,
struct bpf_insn_access_aux *info)
{
switch (off) {
case offsetof(struct sk_buff, len):
return true;
case offsetof(struct sk_buff, data):
info->reg_type = PTR_TO_PACKET;
return true;