[PPP] pppoe: Fill in header directly in __pppoe_xmit

This patch removes the hdr variable (which is copied into the skb)
and instead sets the header directly in the skb.

It also uses __skb_push instead of skb_push since we've just checked
using skb_cow for enough head room.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/pppoe.c b/drivers/net/pppoe.c
index 8818253..bac3654 100644 (file)
--- a/drivers/net/pppoe.c
+++ b/drivers/net/pppoe.c
@@ -848,19 +848,12 @@ static int __pppoe_xmit(struct sock *sk, struct sk_buff *skb)
 {
        struct pppox_sock *po = pppox_sk(sk);
        struct net_device *dev = po->pppoe_dev;
-       struct pppoe_hdr hdr;
        struct pppoe_hdr *ph;
        int data_len = skb->len;
 
        if (sock_flag(sk, SOCK_DEAD) || !(sk->sk_state & PPPOX_CONNECTED))
                goto abort;
 
-       hdr.ver = 1;
-       hdr.type = 1;
-       hdr.code = 0;
-       hdr.sid = po->num;
-       hdr.length = htons(skb->len);
-
        if (!dev)
                goto abort;
 
@@ -870,12 +863,17 @@ static int __pppoe_xmit(struct sock *sk, struct sk_buff *skb)
        if (skb_cow(skb, sizeof(*ph) + dev->hard_header_len))
                goto abort;
 
-       ph = (struct pppoe_hdr *) skb_push(skb, sizeof(struct pppoe_hdr));
-       memcpy(ph, &hdr, sizeof(struct pppoe_hdr));
-       skb->protocol = __constant_htons(ETH_P_PPP_SES);
-
+       __skb_push(skb, sizeof(*ph));
        skb_reset_network_header(skb);
 
+       ph = pppoe_hdr(skb);
+       ph->ver = 1;
+       ph->type = 1;
+       ph->code = 0;
+       ph->sid = po->num;
+       ph->length = htons(data_len);
+
+       skb->protocol = __constant_htons(ETH_P_PPP_SES);
        skb->dev = dev;
 
        dev->hard_header(skb, dev, ETH_P_PPP_SES,