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path: root/drivers/net/bareudp.c
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Diffstat (limited to 'drivers/net/bareudp.c')
-rw-r--r--drivers/net/bareudp.c50
1 files changed, 36 insertions, 14 deletions
diff --git a/drivers/net/bareudp.c b/drivers/net/bareudp.c
index d5c56ca91b77..e057526448d7 100644
--- a/drivers/net/bareudp.c
+++ b/drivers/net/bareudp.c
@@ -68,6 +68,7 @@ static int bareudp_udp_encap_recv(struct sock *sk, struct sk_buff *skb)
__be16 proto;
void *oiph;
int err;
+ int nh;
bareudp = rcu_dereference_sk_user_data(sk);
if (!bareudp)
@@ -83,7 +84,7 @@ static int bareudp_udp_encap_recv(struct sock *sk, struct sk_buff *skb)
if (skb_copy_bits(skb, BAREUDP_BASE_HLEN, &ipversion,
sizeof(ipversion))) {
- bareudp->dev->stats.rx_dropped++;
+ DEV_STATS_INC(bareudp->dev, rx_dropped);
goto drop;
}
ipversion >>= 4;
@@ -93,7 +94,7 @@ static int bareudp_udp_encap_recv(struct sock *sk, struct sk_buff *skb)
} else if (ipversion == 6 && bareudp->multi_proto_mode) {
proto = htons(ETH_P_IPV6);
} else {
- bareudp->dev->stats.rx_dropped++;
+ DEV_STATS_INC(bareudp->dev, rx_dropped);
goto drop;
}
} else if (bareudp->ethertype == htons(ETH_P_MPLS_UC)) {
@@ -107,7 +108,7 @@ static int bareudp_udp_encap_recv(struct sock *sk, struct sk_buff *skb)
ipv4_is_multicast(tunnel_hdr->daddr)) {
proto = htons(ETH_P_MPLS_MC);
} else {
- bareudp->dev->stats.rx_dropped++;
+ DEV_STATS_INC(bareudp->dev, rx_dropped);
goto drop;
}
} else {
@@ -123,7 +124,7 @@ static int bareudp_udp_encap_recv(struct sock *sk, struct sk_buff *skb)
(addr_type & IPV6_ADDR_MULTICAST)) {
proto = htons(ETH_P_MPLS_MC);
} else {
- bareudp->dev->stats.rx_dropped++;
+ DEV_STATS_INC(bareudp->dev, rx_dropped);
goto drop;
}
}
@@ -135,7 +136,7 @@ static int bareudp_udp_encap_recv(struct sock *sk, struct sk_buff *skb)
proto,
!net_eq(bareudp->net,
dev_net(bareudp->dev)))) {
- bareudp->dev->stats.rx_dropped++;
+ DEV_STATS_INC(bareudp->dev, rx_dropped);
goto drop;
}
@@ -143,15 +144,30 @@ static int bareudp_udp_encap_recv(struct sock *sk, struct sk_buff *skb)
tun_dst = udp_tun_rx_dst(skb, family, key, 0, 0);
if (!tun_dst) {
- bareudp->dev->stats.rx_dropped++;
+ DEV_STATS_INC(bareudp->dev, rx_dropped);
goto drop;
}
skb_dst_set(skb, &tun_dst->dst);
skb->dev = bareudp->dev;
- oiph = skb_network_header(skb);
- skb_reset_network_header(skb);
skb_reset_mac_header(skb);
+ /* Save offset of outer header relative to skb->head,
+ * because we are going to reset the network header to the inner header
+ * and might change skb->head.
+ */
+ nh = skb_network_header(skb) - skb->head;
+
+ skb_reset_network_header(skb);
+
+ if (!pskb_inet_may_pull(skb)) {
+ DEV_STATS_INC(bareudp->dev, rx_length_errors);
+ DEV_STATS_INC(bareudp->dev, rx_errors);
+ goto drop;
+ }
+
+ /* Get the outer header. */
+ oiph = skb->head + nh;
+
if (!ipv6_mod_enabled() || family == AF_INET)
err = IP_ECN_decapsulate(oiph, skb);
else
@@ -169,8 +185,8 @@ static int bareudp_udp_encap_recv(struct sock *sk, struct sk_buff *skb)
&((struct ipv6hdr *)oiph)->saddr);
}
if (err > 1) {
- ++bareudp->dev->stats.rx_frame_errors;
- ++bareudp->dev->stats.rx_errors;
+ DEV_STATS_INC(bareudp->dev, rx_frame_errors);
+ DEV_STATS_INC(bareudp->dev, rx_errors);
goto drop;
}
}
@@ -301,6 +317,9 @@ static int bareudp_xmit_skb(struct sk_buff *skb, struct net_device *dev,
__be32 saddr;
int err;
+ if (!skb_vlan_inet_prepare(skb, skb->protocol != htons(ETH_P_TEB)))
+ return -EINVAL;
+
if (!sock)
return -ESHUTDOWN;
@@ -368,6 +387,9 @@ static int bareudp6_xmit_skb(struct sk_buff *skb, struct net_device *dev,
__be16 sport;
int err;
+ if (!skb_vlan_inet_prepare(skb, skb->protocol != htons(ETH_P_TEB)))
+ return -EINVAL;
+
if (!sock)
return -ESHUTDOWN;
@@ -467,11 +489,11 @@ tx_error:
dev_kfree_skb(skb);
if (err == -ELOOP)
- dev->stats.collisions++;
+ DEV_STATS_INC(dev, collisions);
else if (err == -ENETUNREACH)
- dev->stats.tx_carrier_errors++;
+ DEV_STATS_INC(dev, tx_carrier_errors);
- dev->stats.tx_errors++;
+ DEV_STATS_INC(dev, tx_errors);
return NETDEV_TX_OK;
}
@@ -553,7 +575,6 @@ static void bareudp_setup(struct net_device *dev)
SET_NETDEV_DEVTYPE(dev, &bareudp_type);
dev->features |= NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_FRAGLIST;
dev->features |= NETIF_F_RXCSUM;
- dev->features |= NETIF_F_LLTX;
dev->features |= NETIF_F_GSO_SOFTWARE;
dev->hw_features |= NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_FRAGLIST;
dev->hw_features |= NETIF_F_RXCSUM;
@@ -566,6 +587,7 @@ static void bareudp_setup(struct net_device *dev)
dev->type = ARPHRD_NONE;
netif_keep_dst(dev);
dev->priv_flags |= IFF_NO_QUEUE;
+ dev->lltx = true;
dev->flags = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST;
dev->pcpu_stat_type = NETDEV_PCPU_STAT_TSTATS;
}