From: "Nikita V. Shirokov" <tehnerd@tehnerd.com>
Date: Tue, 17 Apr 2018 21:42:16 -0700
Subject: bpf: make bnxt compatible w/ bpf_xdp_adjust_tail
Patch-mainline: v4.18-rc1
Git-commit: b968e735c79767a3c91217fbae691581aa557d8d
References: bsc#1086282 FATE#324873
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 bnxt driver we will just calculate packet's length unconditionally
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Nikita V. Shirokov <tehnerd@tehnerd.com>
Acked-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
@@ -111,10 +111,10 @@ bool bnxt_rx_xdp(struct bnxt *bp, struct
if (tx_avail != bp->tx_ring_size)
*event &= ~BNXT_RX_EVENT;
+ *len = xdp.data_end - xdp.data;
if (orig_data != xdp.data) {
offset = xdp.data - xdp.data_hard_start;
*data_ptr = xdp.data_hard_start + offset;
- *len = xdp.data_end - xdp.data;
}
switch (act) {
case XDP_PASS: