From mboxrd@z Thu Jan 1 00:00:00 1970 From: Florian Westphal Subject: [PATCH -next] nftables: byteorder: provide 64bit le/be conversion Date: Fri, 8 Jan 2016 10:29:12 +0100 Message-ID: <1452245352-2899-1-git-send-email-fw@strlen.de> Cc: Florian Westphal To: Return-path: Received: from Chamillionaire.breakpoint.cc ([80.244.247.6]:47821 "EHLO Chamillionaire.breakpoint.cc" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752077AbcAHJgt (ORCPT ); Fri, 8 Jan 2016 04:36:49 -0500 Sender: netfilter-devel-owner@vger.kernel.org List-ID: Needed to convert the (64bit) conntrack counters to BE ordering. Signed-off-by: Florian Westphal --- Also needs a small nft change, will submit it soon as part of ct counter support series. net/netfilter/nft_byteorder.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/net/netfilter/nft_byteorder.c b/net/netfilter/nft_byteorder.c index fde5145..383c171 100644 --- a/net/netfilter/nft_byteorder.c +++ b/net/netfilter/nft_byteorder.c @@ -8,6 +8,7 @@ * Development of this code funded by Astaro AG (http://www.astaro.com/) */ +#include #include #include #include @@ -39,6 +40,27 @@ static void nft_byteorder_eval(const struct nft_expr *expr, d = (void *)dst; switch (priv->size) { + case 8: { + u64 src64; + + switch (priv->op) { + case NFT_BYTEORDER_NTOH: + for (i = 0; i < priv->len / 8; i++) { + src64 = get_unaligned_be64(&src[i]); + src64 = be64_to_cpu((__force __be64)src64); + put_unaligned_be64(src64, &dst[i]); + } + break; + case NFT_BYTEORDER_HTON: + for (i = 0; i < priv->len / 8; i++) { + src64 = get_unaligned_be64(&src[i]); + src64 = (__force u64)cpu_to_be64(src64); + put_unaligned_be64(src64, &dst[i]); + } + break; + } + break; + } case 4: switch (priv->op) { case NFT_BYTEORDER_NTOH: @@ -101,6 +123,7 @@ static int nft_byteorder_init(const struct nft_ctx *ctx, switch (priv->size) { case 2: case 4: + case 8: break; default: return -EINVAL; -- 2.4.10