提交 a48ce00f 编写于 作者: N Nikita V. Shirokov 提交者: Daniel Borkmann

bpf: make cavium thunder compatible w/ bpf_xdp_adjust_tail

w/ bpf_xdp_adjust_tail helper xdp's data_end pointer could be changed as
well (only "decrease" of pointer's location is going to be supported).
changing of this pointer will change packet's size.
for cavium's thunder driver we will just calculate packet's length
unconditionally
Acked-by: NAlexei Starovoitov <ast@kernel.org>
Signed-off-by: NNikita V. Shirokov <tehnerd@tehnerd.com>
Signed-off-by: NDaniel Borkmann <daniel@iogearbox.net>
上级 b968e735
......@@ -538,9 +538,9 @@ static inline bool nicvf_xdp_rx(struct nicvf *nic, struct bpf_prog *prog,
action = bpf_prog_run_xdp(prog, &xdp);
rcu_read_unlock();
len = xdp.data_end - xdp.data;
/* Check if XDP program has changed headers */
if (orig_data != xdp.data) {
len = xdp.data_end - xdp.data;
offset = orig_data - xdp.data;
dma_addr -= offset;
}
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册