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Diffstat (limited to 'net/ieee802154/6lowpan/rx.c')
-rw-r--r--net/ieee802154/6lowpan/rx.c45
1 files changed, 12 insertions, 33 deletions
diff --git a/net/ieee802154/6lowpan/rx.c b/net/ieee802154/6lowpan/rx.c
index 4be1d289ab2d..12e10201d263 100644
--- a/net/ieee802154/6lowpan/rx.c
+++ b/net/ieee802154/6lowpan/rx.c
@@ -15,36 +15,14 @@
#include "6lowpan_i.h"
-static int lowpan_give_skb_to_devices(struct sk_buff *skb,
- struct net_device *dev)
+static int lowpan_give_skb_to_device(struct sk_buff *skb,
+ struct net_device *dev)
{
- struct lowpan_dev_record *entry;
- struct sk_buff *skb_cp;
- int stat = NET_RX_SUCCESS;
-
+ skb->dev = dev->ieee802154_ptr->lowpan_dev;
skb->protocol = htons(ETH_P_IPV6);
skb->pkt_type = PACKET_HOST;
- rcu_read_lock();
- list_for_each_entry_rcu(entry, &lowpan_devices, list)
- if (lowpan_dev_info(entry->ldev)->real_dev == skb->dev) {
- skb_cp = skb_copy(skb, GFP_ATOMIC);
- if (!skb_cp) {
- kfree_skb(skb);
- rcu_read_unlock();
- return NET_RX_DROP;
- }
-
- skb_cp->dev = entry->ldev;
- stat = netif_rx(skb_cp);
- if (stat == NET_RX_DROP)
- break;
- }
- rcu_read_unlock();
-
- consume_skb(skb);
-
- return stat;
+ return netif_rx(skb);
}
static int
@@ -89,6 +67,10 @@ static int lowpan_rcv(struct sk_buff *skb, struct net_device *dev,
struct ieee802154_hdr hdr;
int ret;
+ if (dev->type != ARPHRD_IEEE802154 ||
+ !dev->ieee802154_ptr->lowpan_dev)
+ goto drop;
+
skb = skb_share_check(skb, GFP_ATOMIC);
if (!skb)
goto drop;
@@ -99,9 +81,6 @@ static int lowpan_rcv(struct sk_buff *skb, struct net_device *dev,
if (skb->pkt_type == PACKET_OTHERHOST)
goto drop_skb;
- if (dev->type != ARPHRD_IEEE802154)
- goto drop_skb;
-
if (ieee802154_hdr_peek_addrs(skb, &hdr) < 0)
goto drop_skb;
@@ -109,7 +88,7 @@ static int lowpan_rcv(struct sk_buff *skb, struct net_device *dev,
if (skb->data[0] == LOWPAN_DISPATCH_IPV6) {
/* Pull off the 1-byte of 6lowpan header. */
skb_pull(skb, 1);
- return lowpan_give_skb_to_devices(skb, NULL);
+ return lowpan_give_skb_to_device(skb, dev);
} else {
switch (skb->data[0] & 0xe0) {
case LOWPAN_DISPATCH_IPHC: /* ipv6 datagram */
@@ -117,7 +96,7 @@ static int lowpan_rcv(struct sk_buff *skb, struct net_device *dev,
if (ret < 0)
goto drop_skb;
- return lowpan_give_skb_to_devices(skb, NULL);
+ return lowpan_give_skb_to_device(skb, dev);
case LOWPAN_DISPATCH_FRAG1: /* first fragment header */
ret = lowpan_frag_rcv(skb, LOWPAN_DISPATCH_FRAG1);
if (ret == 1) {
@@ -125,7 +104,7 @@ static int lowpan_rcv(struct sk_buff *skb, struct net_device *dev,
if (ret < 0)
goto drop_skb;
- return lowpan_give_skb_to_devices(skb, NULL);
+ return lowpan_give_skb_to_device(skb, dev);
} else if (ret == -1) {
return NET_RX_DROP;
} else {
@@ -138,7 +117,7 @@ static int lowpan_rcv(struct sk_buff *skb, struct net_device *dev,
if (ret < 0)
goto drop_skb;
- return lowpan_give_skb_to_devices(skb, NULL);
+ return lowpan_give_skb_to_device(skb, dev);
} else if (ret == -1) {
return NET_RX_DROP;
} else {