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netfilter: nf_tables: Introduce new 64-bit helper register functions

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Introduce new helper functions to load/store 64-bit values onto/from
registers:

 - nft_reg_store64
 - nft_reg_load64

This commit also re-orders all these helpers from smallest to largest
target bit size.

Signed-off-by: Ander Juaristi <a@juaristi.eus>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Ander Juaristi
2019-08-17 13:17:52 +02:00
committed by Pablo Neira Ayuso
parent 0846e1616f
commit a1b840adaf
2 changed files with 25 additions and 13 deletions
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9
net/netfilter/nft_byteorder.c
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@@ -43,14 +43,15 @@ void nft_byteorder_eval(const struct nft_expr *expr,
switch (priv->op) {
case NFT_BYTEORDER_NTOH:
for (i = 0; i < priv->len / 8; i++) {
src64 = get_unaligned((u64 *)&src[i]);
put_unaligned_be64(src64, &dst[i]);
src64 = nft_reg_load64(&src[i]);
nft_reg_store64(&dst[i], be64_to_cpu(src64));
}
break;
case NFT_BYTEORDER_HTON:
for (i = 0; i < priv->len / 8; i++) {
src64 = get_unaligned_be64(&src[i]);
put_unaligned(src64, (u64 *)&dst[i]);
src64 = (__force __u64)
cpu_to_be64(nft_reg_load64(&src[i]));
nft_reg_store64(&dst[i], src64);
}
break;
}