On Thu, Oct 16, 2014 at 12:25:08PM +0200, Arturo Borrero Gonzalez wrote:
> diff --git a/net/netfilter/nft_redir.c b/net/netfilter/nft_redir.c
> new file mode 100644
> index 0000000..424cbf1
> --- /dev/null
> +++ b/net/netfilter/nft_redir.c
> @@ -0,0 +1,86 @@
> +/*
> + * Copyright (c) 2014 Arturo Borrero Gonzalez <arturo.borrero.glez@xxxxxxxxx>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +
> +#include <linux/kernel.h>
> +#include <linux/init.h>
> +#include <linux/module.h>
> +#include <linux/netlink.h>
> +#include <linux/netfilter.h>
> +#include <linux/netfilter/nf_tables.h>
> +#include <net/netfilter/nf_nat.h>
> +#include <net/netfilter/nf_tables.h>
> +#include <net/netfilter/nft_redir.h>
> +
> +const struct nla_policy nft_redir_policy[NFTA_REDIR_MAX + 1] = {
> + [NFTA_REDIR_REG_PROTO_MIN] = { .type = NLA_U32 },
> + [NFTA_REDIR_REG_PROTO_MAX] = { .type = NLA_U32 },
> + [NFTA_REDIR_FLAGS] = { .type = NLA_U16 },
> +};
> +EXPORT_SYMBOL_GPL(nft_redir_policy);
> +
> +int nft_redir_init(const struct nft_ctx *ctx,
> + const struct nft_expr *expr,
> + const struct nlattr * const tb[])
> +{
> + struct nft_redir *priv = nft_expr_priv(expr);
> + int err;
> +
> + if (tb[NFTA_REDIR_REG_PROTO_MIN]) {
> + priv->sreg_proto_min =
> + ntohl(nla_get_be32(tb[NFTA_REDIR_REG_PROTO_MIN]));
> + err = nft_validate_input_register(priv->sreg_proto_min);
> + if (err < 0)
> + return err;
Add the max handling here:
if (tb[NFTA_REDIR_REG_PROTO_MAX]) {
...
}
> + }
The idea is that NFTA_REDIR_REG_PROTO_MAX is only interpreted if
NFTA_REDIR_REG_PROTO_MIN is specified. I'll send a similar patch for
nft_nat.
Thanks Arturo.
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