[NETFILTER]: nf_conntrack_sane: annotate SANE helper with const

Annotate nf_conntrack_sane variables with const qualifier and remove
a few casts.

Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/netfilter/nf_conntrack_sane.c b/net/netfilter/nf_conntrack_sane.c
index b5a16c6e21c297df32297abfce82c4e894a31fe4..a70051d741a7014827c8c98aa7e2c0e05358ceb6 100644 (file)
--- a/net/netfilter/nf_conntrack_sane.c
+++ b/net/netfilter/nf_conntrack_sane.c
@@ -62,8 +62,9 @@ static int help(struct sk_buff *skb,
                enum ip_conntrack_info ctinfo)
 {
        unsigned int dataoff, datalen;
-       struct tcphdr _tcph, *th;
-       char *sb_ptr;
+       const struct tcphdr *th;
+       struct tcphdr _tcph;
+       void *sb_ptr;
        int ret = NF_ACCEPT;
        int dir = CTINFO2DIR(ctinfo);
        struct nf_ct_sane_master *ct_sane_info;
@@ -99,7 +100,7 @@ static int help(struct sk_buff *skb,
                if (datalen != sizeof(struct sane_request))
                        goto out;
 
-               req = (struct sane_request *)sb_ptr;
+               req = sb_ptr;
                if (req->RPC_code != htonl(SANE_NET_START)) {
                        /* Not an interesting command */
                        ct_sane_info->state = SANE_STATE_NORMAL;
@@ -123,7 +124,7 @@ static int help(struct sk_buff *skb,
                goto out;
        }
 
-       reply = (struct sane_reply_net_start *)sb_ptr;
+       reply = sb_ptr;
        if (reply->status != htonl(SANE_STATUS_SUCCESS)) {
                /* saned refused the command */
                pr_debug("nf_ct_sane: unsuccessful SANE_STATUS = %u\n",