pkt_sched: sch_api: Move away from NLMSG_NEW().

And use nlmsg_data() while we're here too, as well as remove
a useless cast.

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

diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index 085ce53..a08b4ab 100644 (file)
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -973,7 +973,7 @@ check_loop_fn(struct Qdisc *q, unsigned long cl, struct qdisc_walker *w)
 static int tc_get_qdisc(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
 {
        struct net *net = sock_net(skb->sk);
-       struct tcmsg *tcm = NLMSG_DATA(n);
+       struct tcmsg *tcm = nlmsg_data(n);
        struct nlattr *tca[TCA_MAX + 1];
        struct net_device *dev;
        u32 clid = tcm->tcm_parent;
@@ -1046,7 +1046,7 @@ static int tc_modify_qdisc(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
 
 replay:
        /* Reinit, just in case something touches this. */
-       tcm = NLMSG_DATA(n);
+       tcm = nlmsg_data(n);
        clid = tcm->tcm_parent;
        q = p = NULL;
 
@@ -1193,8 +1193,10 @@ static int tc_fill_qdisc(struct sk_buff *skb, struct Qdisc *q, u32 clid,
        struct gnet_dump d;
        struct qdisc_size_table *stab;
 
-       nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(*tcm), flags);
-       tcm = NLMSG_DATA(nlh);
+       nlh = nlmsg_put(skb, pid, seq, event, sizeof(*tcm), flags);
+       if (!nlh)
+               goto out_nlmsg_trim;
+       tcm = nlmsg_data(nlh);
        tcm->tcm_family = AF_UNSPEC;
        tcm->tcm__pad1 = 0;
        tcm->tcm__pad2 = 0;
@@ -1230,7 +1232,7 @@ static int tc_fill_qdisc(struct sk_buff *skb, struct Qdisc *q, u32 clid,
        nlh->nlmsg_len = skb_tail_pointer(skb) - b;
        return skb->len;
 
-nlmsg_failure:
+out_nlmsg_trim:
 nla_put_failure:
        nlmsg_trim(skb, b);
        return -1;
@@ -1366,7 +1368,7 @@ done:
 static int tc_ctl_tclass(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
 {
        struct net *net = sock_net(skb->sk);
-       struct tcmsg *tcm = NLMSG_DATA(n);
+       struct tcmsg *tcm = nlmsg_data(n);
        struct nlattr *tca[TCA_MAX + 1];
        struct net_device *dev;
        struct Qdisc *q = NULL;
@@ -1498,8 +1500,10 @@ static int tc_fill_tclass(struct sk_buff *skb, struct Qdisc *q,
        struct gnet_dump d;
        const struct Qdisc_class_ops *cl_ops = q->ops->cl_ops;
 
-       nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(*tcm), flags);
-       tcm = NLMSG_DATA(nlh);
+       nlh = nlmsg_put(skb, pid, seq, event, sizeof(*tcm), flags);
+       if (!nlh)
+               goto out_nlmsg_trim;
+       tcm = nlmsg_data(nlh);
        tcm->tcm_family = AF_UNSPEC;
        tcm->tcm__pad1 = 0;
        tcm->tcm__pad2 = 0;
@@ -1525,7 +1529,7 @@ static int tc_fill_tclass(struct sk_buff *skb, struct Qdisc *q,
        nlh->nlmsg_len = skb_tail_pointer(skb) - b;
        return skb->len;
 
-nlmsg_failure:
+out_nlmsg_trim:
 nla_put_failure:
        nlmsg_trim(skb, b);
        return -1;
@@ -1616,7 +1620,7 @@ static int tc_dump_tclass_root(struct Qdisc *root, struct sk_buff *skb,
 
 static int tc_dump_tclass(struct sk_buff *skb, struct netlink_callback *cb)
 {
-       struct tcmsg *tcm = (struct tcmsg *)NLMSG_DATA(cb->nlh);
+       struct tcmsg *tcm = nlmsg_data(cb->nlh);
        struct net *net = sock_net(skb->sk);
        struct netdev_queue *dev_queue;
        struct net_device *dev;