[NETFILTER]: annotate xtables targets with const and remove casts

Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>

6 files changed, 18 insertions, 15 deletions

diff --git a/net/ipv4/netfilter/ipt_CLUSTERIP.c b/net/ipv4/netfilter/ipt_CLUSTERIP.c
index 965b08a7d73..2510d4fcdb5 100644
--- a/net/ipv4/netfilter/ipt_CLUSTERIP.c
+++ b/net/ipv4/netfilter/ipt_CLUSTERIP.c
@@ -142,7 +142,7 @@ clusterip_config_init_nodelist(struct clusterip_config *c,
 }
 
 static struct clusterip_config *
-clusterip_config_init(struct ipt_clusterip_tgt_info *i, __be32 ip,
+clusterip_config_init(const struct ipt_clusterip_tgt_info *i, __be32 ip,
 			struct net_device *dev)
 {
 	struct clusterip_config *c;
@@ -416,7 +416,7 @@ clusterip_tg_check(const char *tablename, const void *e_void,
 /* drop reference count of cluster config when rule is deleted */
 static void clusterip_tg_destroy(const struct xt_target *target, void *targinfo)
 {
-	struct ipt_clusterip_tgt_info *cipinfo = targinfo;
+	const struct ipt_clusterip_tgt_info *cipinfo = targinfo;
 
 	/* if no more entries are referencing the config, remove it
 	 * from the list and destroy the proc entry */
@@ -565,7 +565,7 @@ struct clusterip_seq_position {
 
 static void *clusterip_seq_start(struct seq_file *s, loff_t *pos)
 {
-	struct proc_dir_entry *pde = s->private;
+	const struct proc_dir_entry *pde = s->private;
 	struct clusterip_config *c = pde->data;
 	unsigned int weight;
 	u_int32_t local_nodes;
@@ -592,7 +592,7 @@ static void *clusterip_seq_start(struct seq_file *s, loff_t *pos)
 
 static void *clusterip_seq_next(struct seq_file *s, void *v, loff_t *pos)
 {
-	struct clusterip_seq_position *idx = (struct clusterip_seq_position *)v;
+	struct clusterip_seq_position *idx = v;
 
 	*pos = ++idx->pos;
 	if (*pos >= idx->weight) {
@@ -611,7 +611,7 @@ static void clusterip_seq_stop(struct seq_file *s, void *v)
 
 static int clusterip_seq_show(struct seq_file *s, void *v)
 {
-	struct clusterip_seq_position *idx = (struct clusterip_seq_position *)v;
+	struct clusterip_seq_position *idx = v;
 
 	if (idx->pos != 0)
 		seq_putc(s, ',');
@@ -667,7 +667,7 @@ static ssize_t clusterip_proc_write(struct file *file, const char __user *input,
 {
 #define PROC_WRITELEN	10
 	char buffer[PROC_WRITELEN+1];
-	struct proc_dir_entry *pde = PDE(file->f_path.dentry->d_inode);
+	const struct proc_dir_entry *pde = PDE(file->f_path.dentry->d_inode);
 	struct clusterip_config *c = pde->data;
 	unsigned long nodenum;
 
diff --git a/net/ipv4/netfilter/ipt_ECN.c b/net/ipv4/netfilter/ipt_ECN.c
index 21395bc2b27..d60139c134c 100644
--- a/net/ipv4/netfilter/ipt_ECN.c
+++ b/net/ipv4/netfilter/ipt_ECN.c
@@ -100,7 +100,7 @@ ecn_tg_check(const char *tablename, const void *e_void,
              const struct xt_target *target, void *targinfo,
              unsigned int hook_mask)
 {
-	const struct ipt_ECN_info *einfo = (struct ipt_ECN_info *)targinfo;
+	const struct ipt_ECN_info *einfo = targinfo;
 	const struct ipt_entry *e = e_void;
 
 	if (einfo->operation & IPT_ECN_OP_MASK) {
diff --git a/net/ipv4/netfilter/ipt_LOG.c b/net/ipv4/netfilter/ipt_LOG.c
index c40e233e271..0af14137137 100644
--- a/net/ipv4/netfilter/ipt_LOG.c
+++ b/net/ipv4/netfilter/ipt_LOG.c
@@ -76,7 +76,8 @@ static void dump_packet(const struct nf_loginfo *info,
 
 	if ((logflags & IPT_LOG_IPOPT)
 	    && ih->ihl * 4 > sizeof(struct iphdr)) {
-		unsigned char _opt[4 * 15 - sizeof(struct iphdr)], *op;
+		const unsigned char *op;
+		unsigned char _opt[4 * 15 - sizeof(struct iphdr)];
 		unsigned int i, optsize;
 
 		optsize = ih->ihl * 4 - sizeof(struct iphdr);
diff --git a/net/ipv4/netfilter/ipt_REJECT.c b/net/ipv4/netfilter/ipt_REJECT.c
index 22606e2baa1..2639872849d 100644
--- a/net/ipv4/netfilter/ipt_REJECT.c
+++ b/net/ipv4/netfilter/ipt_REJECT.c
@@ -35,8 +35,10 @@ MODULE_DESCRIPTION("Xtables: packet \"rejection\" target for IPv4");
 static void send_reset(struct sk_buff *oldskb, int hook)
 {
 	struct sk_buff *nskb;
-	struct iphdr *oiph, *niph;
-	struct tcphdr _otcph, *oth, *tcph;
+	const struct iphdr *oiph;
+	struct iphdr *niph;
+	const struct tcphdr *oth;
+	struct tcphdr _otcph, *tcph;
 	unsigned int addr_type;
 
 	/* IP header checks: fragment. */
diff --git a/net/ipv4/netfilter/ipt_recent.c b/net/ipv4/netfilter/ipt_recent.c
index 50e06690eb5..21cb053f5d7 100644
--- a/net/ipv4/netfilter/ipt_recent.c
+++ b/net/ipv4/netfilter/ipt_recent.c
@@ -340,7 +340,7 @@ static void *recent_seq_start(struct seq_file *seq, loff_t *pos)
 static void *recent_seq_next(struct seq_file *seq, void *v, loff_t *pos)
 {
 	struct recent_iter_state *st = seq->private;
-	struct recent_table *t = st->table;
+	const struct recent_table *t = st->table;
 	struct recent_entry *e = v;
 	struct list_head *head = e->list.next;
 
@@ -361,7 +361,7 @@ static void recent_seq_stop(struct seq_file *s, void *v)
 
 static int recent_seq_show(struct seq_file *seq, void *v)
 {
-	struct recent_entry *e = v;
+	const struct recent_entry *e = v;
 	unsigned int i;
 
 	i = (e->index - 1) % ip_pkt_list_tot;
@@ -396,7 +396,7 @@ static int recent_seq_open(struct inode *inode, struct file *file)
 static ssize_t recent_proc_write(struct file *file, const char __user *input,
 				 size_t size, loff_t *loff)
 {
-	struct proc_dir_entry *pde = PDE(file->f_path.dentry->d_inode);
+	const struct proc_dir_entry *pde = PDE(file->f_path.dentry->d_inode);
 	struct recent_table *t = pde->data;
 	struct recent_entry *e;
 	char buf[sizeof("+255.255.255.255")], *c = buf;
diff --git a/net/ipv4/netfilter/nf_nat_rule.c b/net/ipv4/netfilter/nf_nat_rule.c
index e330a2974de..ebe0c7903ae 100644
--- a/net/ipv4/netfilter/nf_nat_rule.c
+++ b/net/ipv4/netfilter/nf_nat_rule.c
@@ -143,7 +143,7 @@ static bool ipt_snat_checkentry(const char *tablename,
 				void *targinfo,
 				unsigned int hook_mask)
 {
-	struct nf_nat_multi_range_compat *mr = targinfo;
+	const struct nf_nat_multi_range_compat *mr = targinfo;
 
 	/* Must be a valid range */
 	if (mr->rangesize != 1) {
@@ -159,7 +159,7 @@ static bool ipt_dnat_checkentry(const char *tablename,
 				void *targinfo,
 				unsigned int hook_mask)
 {
-	struct nf_nat_multi_range_compat *mr = targinfo;
+	const struct nf_nat_multi_range_compat *mr = targinfo;
 
 	/* Must be a valid range */
 	if (mr->rangesize != 1) {