Message ID | 20180417065131.3632-8-tehnerd@tehnerd.com |
---|---|
State | Changes Requested, archived |
Delegated to: | BPF Maintainers |
Headers | show |
Series | introduction of bpf_xdp_adjust_tail | expand |
On Mon, Apr 16, 2018 at 11:51:28PM -0700, Nikita V. Shirokov wrote: > 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 > > Signed-off-by: Nikita V. Shirokov <tehnerd@tehnerd.com> Acked-by: Alexei Starovoitov <ast@kernel.org>
diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_main.c b/drivers/net/ethernet/cavium/thunder/nicvf_main.c index 707db3304396..7135db45927e 100644 --- a/drivers/net/ethernet/cavium/thunder/nicvf_main.c +++ b/drivers/net/ethernet/cavium/thunder/nicvf_main.c @@ -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; }
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 Signed-off-by: Nikita V. Shirokov <tehnerd@tehnerd.com> --- drivers/net/ethernet/cavium/thunder/nicvf_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)