From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Nikita V. Shirokov" Subject: [PATCH bpf-next v2 04/11] bpf: make bnxt compatible w/ bpf_xdp_adjust_tail Date: Tue, 17 Apr 2018 21:29:44 -0700 Message-ID: <20180418042951.17183-5-tehnerd@tehnerd.com> References: <20180418042951.17183-1-tehnerd@tehnerd.com> Cc: netdev@vger.kernel.org, "Nikita V. Shirokov" To: Alexei Starovoitov , Daniel Borkmann , Michael Chan Return-path: Received: from mail-pf0-f179.google.com ([209.85.192.179]:44996 "EHLO mail-pf0-f179.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752741AbeDRGFx (ORCPT ); Wed, 18 Apr 2018 02:05:53 -0400 Received: by mail-pf0-f179.google.com with SMTP id p15so366756pff.11 for ; Tue, 17 Apr 2018 23:05:53 -0700 (PDT) In-Reply-To: <20180418042951.17183-1-tehnerd@tehnerd.com> Sender: netdev-owner@vger.kernel.org List-ID: 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 --- drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c index 1389ab5e05df..1f0e872d0667 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c @@ -113,10 +113,10 @@ bool bnxt_rx_xdp(struct bnxt *bp, struct bnxt_rx_ring_info *rxr, u16 cons, 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: -- 2.15.1