diff options
Diffstat (limited to 'net/bridge/netfilter/ebt_arp.c')
| -rw-r--r-- | net/bridge/netfilter/ebt_arp.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/net/bridge/netfilter/ebt_arp.c b/net/bridge/netfilter/ebt_arp.c index 18141392a9b..933433ede38 100644 --- a/net/bridge/netfilter/ebt_arp.c +++ b/net/bridge/netfilter/ebt_arp.c @@ -18,8 +18,9 @@ static int ebt_filter_arp(const struct sk_buff *skb, const struct net_device *in, const struct net_device *out, const void *data, unsigned int datalen) { - struct ebt_arp_info *info = (struct ebt_arp_info *)data; - struct arphdr _arph, *ah; + const struct ebt_arp_info *info = data; + const struct arphdr *ah; + struct arphdr _arph; ah = skb_header_pointer(skb, 0, sizeof(_arph), &_arph); if (ah == NULL) @@ -35,7 +36,8 @@ static int ebt_filter_arp(const struct sk_buff *skb, const struct net_device *in return EBT_NOMATCH; if (info->bitmask & (EBT_ARP_SRC_IP | EBT_ARP_DST_IP | EBT_ARP_GRAT)) { - __be32 saddr, daddr, *sap, *dap; + const __be32 *sap, *dap; + __be32 saddr, daddr; if (ah->ar_pln != sizeof(__be32) || ah->ar_pro != htons(ETH_P_IP)) return EBT_NOMATCH; @@ -61,7 +63,8 @@ static int ebt_filter_arp(const struct sk_buff *skb, const struct net_device *in } if (info->bitmask & (EBT_ARP_SRC_MAC | EBT_ARP_DST_MAC)) { - unsigned char _mac[ETH_ALEN], *mp; + const unsigned char *mp; + unsigned char _mac[ETH_ALEN]; uint8_t verdict, i; if (ah->ar_hln != ETH_ALEN || ah->ar_hrd != htons(ARPHRD_ETHER)) @@ -100,7 +103,7 @@ static int ebt_filter_arp(const struct sk_buff *skb, const struct net_device *in static int ebt_arp_check(const char *tablename, unsigned int hookmask, const struct ebt_entry *e, void *data, unsigned int datalen) { - struct ebt_arp_info *info = (struct ebt_arp_info *)data; + const struct ebt_arp_info *info = data; if (datalen != EBT_ALIGN(sizeof(struct ebt_arp_info))) return -EINVAL; |