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0001-6lowpan-Refactor-packet-delivery-into-a-function.patch
76 lines (67 loc) · 2 KB
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0001-6lowpan-Refactor-packet-delivery-into-a-function.patch
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From 7d1bc2acfa93363ce83701174bd53989dde86fdb Mon Sep 17 00:00:00 2001
From: Alan Ott <alan@signal11.us>
Date: Wed, 16 Jan 2013 19:09:47 +0000
Subject: [PATCH 01/23] 6lowpan: Refactor packet delivery into a function
Refactor the handing of the skb's to the individual lowpan devices into a
function.
Signed-off-by: Alan Ott <alan@signal11.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net/ieee802154/6lowpan.c | 38 ++++++++++++++++++++++++--------------
1 file changed, 24 insertions(+), 14 deletions(-)
diff --git a/net/ieee802154/6lowpan.c b/net/ieee802154/6lowpan.c
index 76c3d0a..9d39f5b 100644
--- a/net/ieee802154/6lowpan.c
+++ b/net/ieee802154/6lowpan.c
@@ -594,10 +594,32 @@ static int lowpan_header_create(struct sk_buff *skb,
}
}
+static int lowpan_give_skb_to_devices(struct sk_buff *skb)
+{
+ struct lowpan_dev_record *entry;
+ struct sk_buff *skb_cp;
+ int stat = NET_RX_SUCCESS;
+
+ 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) {
+ stat = -ENOMEM;
+ break;
+ }
+
+ skb_cp->dev = entry->ldev;
+ stat = netif_rx(skb_cp);
+ }
+ rcu_read_unlock();
+
+ return stat;
+}
+
static int lowpan_skb_deliver(struct sk_buff *skb, struct ipv6hdr *hdr)
{
struct sk_buff *new;
- struct lowpan_dev_record *entry;
int stat = NET_RX_SUCCESS;
new = skb_copy_expand(skb, sizeof(struct ipv6hdr), skb_tailroom(skb),
@@ -614,19 +636,7 @@ static int lowpan_skb_deliver(struct sk_buff *skb, struct ipv6hdr *hdr)
new->protocol = htons(ETH_P_IPV6);
new->pkt_type = PACKET_HOST;
- rcu_read_lock();
- list_for_each_entry_rcu(entry, &lowpan_devices, list)
- if (lowpan_dev_info(entry->ldev)->real_dev == new->dev) {
- skb = skb_copy(new, GFP_ATOMIC);
- if (!skb) {
- stat = -ENOMEM;
- break;
- }
-
- skb->dev = entry->ldev;
- stat = netif_rx(skb);
- }
- rcu_read_unlock();
+ stat = lowpan_give_skb_to_devices(new);
kfree_skb(new);
--
1.8.2.1