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| author |   Herbert Xu <herbert@gondor.apana.org.au> | 2007-09-16 16:20:21 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2007-09-16 16:20:21 -0700 |
| commit | 9355ec23397af32799038d0e8edbfa5b6f425c27 (patch) | |
| tree | 256b00fa1af6628896c0a1a18866384497e9c5bd /drivers/net/pppoe.c | |
| parent | [PPP] pppoe: Fix data clobbering in __pppoe_xmit and return value (diff) | |
| download | linux-dev-9355ec23397af32799038d0e8edbfa5b6f425c27.tar.xz linux-dev-9355ec23397af32799038d0e8edbfa5b6f425c27.zip | |
[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>
Diffstat (limited to 'drivers/net/pppoe.c')
| -rw-r--r-- | drivers/net/pppoe.c | 20 |
1 files changed, 9 insertions, 11 deletions
diff --git a/drivers/net/pppoe.c b/drivers/net/pppoe.c index 8818253102f2..bac36546e0bf 100644 --- 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, |