From a48ce00f9aeb6ce1227e291c36a0fa4995273144 Mon Sep 17 00:00:00 2001 From: "Nikita V. Shirokov" Date: Tue, 17 Apr 2018 21:42:17 -0700 Subject: 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: Alexei Starovoitov Signed-off-by: Nikita V. Shirokov Signed-off-by: Daniel Borkmann --- drivers/net/ethernet/cavium/thunder/nicvf_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/net/ethernet/cavium/thunder/nicvf_main.c') 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; } -- cgit v1.2.3-59-g8ed1b