From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Nikita V. Shirokov" Subject: [PATCH bpf-next v2 06/11] bpf: make netronome nfp compatible w/ bpf_xdp_adjust_tail Date: Tue, 17 Apr 2018 21:29:46 -0700 Message-ID: <20180418042951.17183-7-tehnerd@tehnerd.com> References: <20180418042951.17183-1-tehnerd@tehnerd.com> Cc: netdev@vger.kernel.org, "Nikita V. Shirokov" To: Alexei Starovoitov , Daniel Borkmann , Jakub Kicinski Return-path: Received: from mail-pg0-f48.google.com ([74.125.83.48]:40418 "EHLO mail-pg0-f48.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752744AbeDRGFz (ORCPT ); Wed, 18 Apr 2018 02:05:55 -0400 Received: by mail-pg0-f48.google.com with SMTP id e9so350512pgr.7 for ; Tue, 17 Apr 2018 23:05:55 -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 nfp driver we will just calculate packet's length unconditionally Acked-by: Alexei Starovoitov Acked-by: Jakub Kicinski --- drivers/net/ethernet/netronome/nfp/nfp_net_common.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c index 1eb6549f2a54..d9111c077699 100644 --- a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c +++ b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c @@ -1722,7 +1722,7 @@ static int nfp_net_rx(struct nfp_net_rx_ring *rx_ring, int budget) act = bpf_prog_run_xdp(xdp_prog, &xdp); - pkt_len -= xdp.data - orig_data; + pkt_len = xdp.data_end - xdp.data; pkt_off += xdp.data - orig_data; switch (act) { -- 2.15.1