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Commit fad136ea authored by Patrick McHardy's avatar Patrick McHardy Committed by Pablo Neira Ayuso
Browse files

netfilter: nf_tables: convert expressions to u32 register pointers 



Simple conversion to use u32 pointers to the beginning of the registers
to keep follow up patches smaller.

Signed-off-by: default avatarPatrick McHardy <kaber@trash.net>
Signed-off-by: default avatarPablo Neira Ayuso <pablo@netfilter.org>
parent 1ca2e170

net/bridge/netfilter/nft_meta_bridge.c

+2 −2
Original line number Diff line number Diff line
@@ -24,7 +24,7 @@ static void nft_meta_bridge_get_eval(const struct nft_expr *expr, 
{

	const struct nft_meta *priv = nft_expr_priv(expr);

	const struct net_device *in = pkt->in, *out = pkt->out;

	struct nft_data *dest = &regs->data[priv->dreg];

	u32 *dest = &regs->data[priv->dreg].data[0];

	const struct net_bridge_port *p;



	switch (priv->key) {
@@ -40,7 +40,7 @@ static void nft_meta_bridge_get_eval(const struct nft_expr *expr, 
		goto out;

	}



	strncpy((char *)dest->data, p->br->dev->name, sizeof(dest->data));

	strncpy((char *)dest, p->br->dev->name, IFNAMSIZ);

	return;

out:

	return nft_meta_get_eval(expr, regs, pkt);

net/netfilter/nf_tables_core.c

+4 −4
Original line number Diff line number Diff line
@@ -81,7 +81,7 @@ static bool nft_payload_fast_eval(const struct nft_expr *expr, 
{

	const struct nft_payload *priv = nft_expr_priv(expr);

	const struct sk_buff *skb = pkt->skb;

	struct nft_data *dest = &regs->data[priv->dreg];

	u32 *dest = &regs->data[priv->dreg].data[0];

	unsigned char *ptr;



	if (priv->base == NFT_PAYLOAD_NETWORK_HEADER)
@@ -95,11 +95,11 @@ static bool nft_payload_fast_eval(const struct nft_expr *expr, 
		return false;



	if (priv->len == 2)

		*(u16 *)dest->data = *(u16 *)ptr;

		*(u16 *)dest = *(u16 *)ptr;

	else if (priv->len == 4)

		*(u32 *)dest->data = *(u32 *)ptr;

		*(u32 *)dest = *(u32 *)ptr;

	else

		*(u8 *)dest->data = *(u8 *)ptr;

		*(u8 *)dest = *(u8 *)ptr;

	return true;

}

net/netfilter/nft_bitwise.c

+4 −6
Original line number Diff line number Diff line
@@ -30,14 +30,12 @@ static void nft_bitwise_eval(const struct nft_expr *expr, 
			     const struct nft_pktinfo *pkt)

{

	const struct nft_bitwise *priv = nft_expr_priv(expr);

	const struct nft_data *src = &regs->data[priv->sreg];

	struct nft_data *dst = &regs->data[priv->dreg];

	const u32  *src = &regs->data[priv->sreg].data[0];

	u32 *dst = &regs->data[priv->dreg].data[0];

	unsigned int i;



	for (i = 0; i < DIV_ROUND_UP(priv->len, 4); i++) {

		dst->data[i] = (src->data[i] & priv->mask.data[i]) ^

			       priv->xor.data[i];

	}

	for (i = 0; i < DIV_ROUND_UP(priv->len, 4); i++)

		dst[i] = (src[i] & priv->mask.data[i]) ^ priv->xor.data[i];

}



static const struct nla_policy nft_bitwise_policy[NFTA_BITWISE_MAX + 1] = {

net/netfilter/nft_byteorder.c

+4 −4
Original line number Diff line number Diff line
@@ -30,13 +30,13 @@ static void nft_byteorder_eval(const struct nft_expr *expr, 
			       const struct nft_pktinfo *pkt)

{

	const struct nft_byteorder *priv = nft_expr_priv(expr);

	struct nft_data *src = &regs->data[priv->sreg];

	struct nft_data *dst = &regs->data[priv->dreg];

	u32 *src = &regs->data[priv->sreg].data[0];

	u32 *dst = &regs->data[priv->dreg].data[0];

	union { u32 u32; u16 u16; } *s, *d;

	unsigned int i;



	s = (void *)src->data;

	d = (void *)dst->data;

	s = (void *)src;

	d = (void *)dst;



	switch (priv->size) {

	case 4:

net/netfilter/nft_ct.c

+19 −19
Original line number Diff line number Diff line
@@ -35,7 +35,7 @@ static void nft_ct_get_eval(const struct nft_expr *expr, 
			    const struct nft_pktinfo *pkt)

{

	const struct nft_ct *priv = nft_expr_priv(expr);

	struct nft_data *dest = &regs->data[priv->dreg];

	u32 *dest = &regs->data[priv->dreg].data[0];

	enum ip_conntrack_info ctinfo;

	const struct nf_conn *ct;

	const struct nf_conn_help *help;
@@ -54,7 +54,7 @@ static void nft_ct_get_eval(const struct nft_expr *expr, 
			state = NF_CT_STATE_UNTRACKED_BIT;

		else

			state = NF_CT_STATE_BIT(ctinfo);

		dest->data[0] = state;

		*dest = state;

		return;

	default:

		break;
@@ -65,26 +65,26 @@ static void nft_ct_get_eval(const struct nft_expr *expr, 


	switch (priv->key) {

	case NFT_CT_DIRECTION:

		dest->data[0] = CTINFO2DIR(ctinfo);

		*dest = CTINFO2DIR(ctinfo);

		return;

	case NFT_CT_STATUS:

		dest->data[0] = ct->status;

		*dest = ct->status;

		return;

#ifdef CONFIG_NF_CONNTRACK_MARK

	case NFT_CT_MARK:

		dest->data[0] = ct->mark;

		*dest = ct->mark;

		return;

#endif

#ifdef CONFIG_NF_CONNTRACK_SECMARK

	case NFT_CT_SECMARK:

		dest->data[0] = ct->secmark;

		*dest = ct->secmark;

		return;

#endif

	case NFT_CT_EXPIRATION:

		diff = (long)jiffies - (long)ct->timeout.expires;

		if (diff < 0)

			diff = 0;

		dest->data[0] = jiffies_to_msecs(diff);

		*dest = jiffies_to_msecs(diff);

		return;

	case NFT_CT_HELPER:

		if (ct->master == NULL)
@@ -95,7 +95,7 @@ static void nft_ct_get_eval(const struct nft_expr *expr, 
		helper = rcu_dereference(help->helper);

		if (helper == NULL)

			goto err;

		strncpy((char *)dest->data, helper->name, sizeof(dest->data));

		strncpy((char *)dest, helper->name, NF_CT_HELPER_NAME_LEN);

		return;

#ifdef CONFIG_NF_CONNTRACK_LABELS

	case NFT_CT_LABELS: {
@@ -103,15 +103,15 @@ static void nft_ct_get_eval(const struct nft_expr *expr, 
		unsigned int size;



		if (!labels) {

			memset(dest->data, 0, sizeof(dest->data));

			memset(dest, 0, NF_CT_LABELS_MAX_SIZE);

			return;

		}



		size = labels->words * sizeof(long);

		memcpy(dest->data, labels->bits, size);

		if (size < sizeof(dest->data))

			memset(((char *) dest->data) + size, 0,

			       sizeof(dest->data) - size);

		memcpy(dest, labels->bits, size);

		if (size < NF_CT_LABELS_MAX_SIZE)

			memset(((char *) dest) + size, 0,

			       NF_CT_LABELS_MAX_SIZE - size);

		return;

	}

#endif
@@ -122,24 +122,24 @@ static void nft_ct_get_eval(const struct nft_expr *expr, 
	tuple = &ct->tuplehash[priv->dir].tuple;

	switch (priv->key) {

	case NFT_CT_L3PROTOCOL:

		dest->data[0] = nf_ct_l3num(ct);

		*dest = nf_ct_l3num(ct);

		return;

	case NFT_CT_SRC:

		memcpy(dest->data, tuple->src.u3.all,

		memcpy(dest, tuple->src.u3.all,

		       nf_ct_l3num(ct) == NFPROTO_IPV4 ? 4 : 16);

		return;

	case NFT_CT_DST:

		memcpy(dest->data, tuple->dst.u3.all,

		memcpy(dest, tuple->dst.u3.all,

		       nf_ct_l3num(ct) == NFPROTO_IPV4 ? 4 : 16);

		return;

	case NFT_CT_PROTOCOL:

		dest->data[0] = nf_ct_protonum(ct);

		*dest = nf_ct_protonum(ct);

		return;

	case NFT_CT_PROTO_SRC:

		dest->data[0] = (__force __u16)tuple->src.u.all;

		*dest = (__force __u16)tuple->src.u.all;

		return;

	case NFT_CT_PROTO_DST:

		dest->data[0] = (__force __u16)tuple->dst.u.all;

		*dest = (__force __u16)tuple->dst.u.all;

		return;

	default:

		break;