netfilter: nfnetlink_queue_core: Move away from NLMSG_PUT().

And use nlmsg_data() while we're here too.

Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/netfilter/nfnetlink_queue_core.c b/net/netfilter/nfnetlink_queue_core.c
index d36b95e..a0b6492 100644 (file)
--- a/net/netfilter/nfnetlink_queue_core.c
+++ b/net/netfilter/nfnetlink_queue_core.c
@@ -274,13 +274,17 @@ nfqnl_build_packet_message(struct nfqnl_instance *queue,
 
        skb = alloc_skb(size, GFP_ATOMIC);
        if (!skb)
-               goto nlmsg_failure;
+               return NULL;
 
        old_tail = skb->tail;
-       nlh = NLMSG_PUT(skb, 0, 0,
+       nlh = nlmsg_put(skb, 0, 0,
                        NFNL_SUBSYS_QUEUE << 8 | NFQNL_MSG_PACKET,
-                       sizeof(struct nfgenmsg));
-       nfmsg = NLMSG_DATA(nlh);
+                       sizeof(struct nfgenmsg), 0);
+       if (!nlh) {
+               kfree_skb(skb);
+               return NULL;
+       }
+       nfmsg = nlmsg_data(nlh);
        nfmsg->nfgen_family = entry->pf;
        nfmsg->version = NFNETLINK_V0;
        nfmsg->res_id = htons(queue->queue_num);
@@ -383,7 +387,8 @@ nfqnl_build_packet_message(struct nfqnl_instance *queue,
 
                if (skb_tailroom(skb) < nla_total_size(data_len)) {
                        printk(KERN_WARNING "nf_queue: no tailroom!\n");
-                       goto nlmsg_failure;
+                       kfree_skb(skb);
+                       return NULL;
                }
 
                nla = (struct nlattr *)skb_put(skb, nla_total_size(data_len));
@@ -400,7 +405,6 @@ nfqnl_build_packet_message(struct nfqnl_instance *queue,
        nlh->nlmsg_len = skb->tail - old_tail;
        return skb;
 
-nlmsg_failure:
 nla_put_failure:
        if (skb)
                kfree_skb(skb);
@@ -686,7 +690,7 @@ nfqnl_recv_verdict_batch(struct sock *ctnl, struct sk_buff *skb,
                   const struct nlmsghdr *nlh,
                   const struct nlattr * const nfqa[])
 {
-       struct nfgenmsg *nfmsg = NLMSG_DATA(nlh);
+       struct nfgenmsg *nfmsg = nlmsg_data(nlh);
        struct nf_queue_entry *entry, *tmp;
        unsigned int verdict, maxid;
        struct nfqnl_msg_verdict_hdr *vhdr;
@@ -732,7 +736,7 @@ nfqnl_recv_verdict(struct sock *ctnl, struct sk_buff *skb,
                   const struct nlmsghdr *nlh,
                   const struct nlattr * const nfqa[])
 {
-       struct nfgenmsg *nfmsg = NLMSG_DATA(nlh);
+       struct nfgenmsg *nfmsg = nlmsg_data(nlh);
        u_int16_t queue_num = ntohs(nfmsg->res_id);
 
        struct nfqnl_msg_verdict_hdr *vhdr;
@@ -806,7 +810,7 @@ nfqnl_recv_config(struct sock *ctnl, struct sk_buff *skb,
                  const struct nlmsghdr *nlh,
                  const struct nlattr * const nfqa[])
 {
-       struct nfgenmsg *nfmsg = NLMSG_DATA(nlh);
+       struct nfgenmsg *nfmsg = nlmsg_data(nlh);
        u_int16_t queue_num = ntohs(nfmsg->res_id);
        struct nfqnl_instance *queue;
        struct nfqnl_msg_config_cmd *cmd = NULL;