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Diffstat (limited to 'net/core/netpoll.c')
-rw-r--r--net/core/netpoll.c30
1 files changed, 21 insertions, 9 deletions
diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index da1019451ccb..b316435b0e2a 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -86,7 +86,7 @@ static __sum16 checksum_udp(struct sk_buff *skb, struct udphdr *uh,
{
__wsum psum;
- if (uh->check == 0 || skb->ip_summed == CHECKSUM_UNNECESSARY)
+ if (uh->check == 0 || skb_csum_unnecessary(skb))
return 0;
psum = csum_tcpudp_nofold(saddr, daddr, ulen, IPPROTO_UDP, 0);
@@ -293,10 +293,12 @@ void netpoll_send_udp(struct netpoll *np, const char *msg, int len)
if (!skb)
return;
- memcpy(skb->data, msg, len);
+ skb_copy_to_linear_data(skb, msg, len);
skb->len += len;
- skb->h.uh = udph = (struct udphdr *) skb_push(skb, sizeof(*udph));
+ skb_push(skb, sizeof(*udph));
+ skb_reset_transport_header(skb);
+ udph = udp_hdr(skb);
udph->source = htons(np->local_port);
udph->dest = htons(np->remote_port);
udph->len = htons(udp_len);
@@ -308,7 +310,9 @@ void netpoll_send_udp(struct netpoll *np, const char *msg, int len)
if (udph->check == 0)
udph->check = CSUM_MANGLED_0;
- skb->nh.iph = iph = (struct iphdr *)skb_push(skb, sizeof(*iph));
+ skb_push(skb, sizeof(*iph));
+ skb_reset_network_header(skb);
+ iph = ip_hdr(skb);
/* iph->version = 4; iph->ihl = 5; */
put_unaligned(0x45, (unsigned char *)iph);
@@ -324,7 +328,7 @@ void netpoll_send_udp(struct netpoll *np, const char *msg, int len)
iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
eth = (struct ethhdr *) skb_push(skb, ETH_HLEN);
- skb->mac.raw = skb->data;
+ skb_reset_mac_header(skb);
skb->protocol = eth->h_proto = htons(ETH_P_IP);
memcpy(eth->h_source, np->local_mac, 6);
memcpy(eth->h_dest, np->remote_mac, 6);
@@ -359,8 +363,9 @@ static void arp_reply(struct sk_buff *skb)
(2 * sizeof(u32)))))
return;
- skb->h.raw = skb->nh.raw = skb->data;
- arp = skb->nh.arph;
+ skb_reset_network_header(skb);
+ skb_reset_transport_header(skb);
+ arp = arp_hdr(skb);
if ((arp->ar_hrd != htons(ARPHRD_ETHER) &&
arp->ar_hrd != htons(ARPHRD_IEEE802)) ||
@@ -389,7 +394,7 @@ static void arp_reply(struct sk_buff *skb)
if (!send_skb)
return;
- send_skb->nh.raw = send_skb->data;
+ skb_reset_network_header(send_skb);
arp = (struct arphdr *) skb_put(send_skb, size);
send_skb->dev = skb->dev;
send_skb->protocol = htons(ETH_P_ARP);
@@ -443,7 +448,7 @@ int __netpoll_rx(struct sk_buff *skb)
goto out;
/* check if netpoll clients need ARP */
- if (skb->protocol == __constant_htons(ETH_P_ARP) &&
+ if (skb->protocol == htons(ETH_P_ARP) &&
atomic_read(&trapped)) {
skb_queue_tail(&npi->arp_tx, skb);
return 1;
@@ -471,6 +476,13 @@ int __netpoll_rx(struct sk_buff *skb)
if (skb->len < len || len < iph->ihl*4)
goto out;
+ /*
+ * Our transport medium may have padded the buffer out.
+ * Now We trim to the true length of the frame.
+ */
+ if (pskb_trim_rcsum(skb, len))
+ goto out;
+
if (iph->protocol != IPPROTO_UDP)
goto out;