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Diffstat (limited to 'net/ieee802154')
-rw-r--r--net/ieee802154/6lowpan/tx.c27
1 files changed, 17 insertions, 10 deletions
diff --git a/net/ieee802154/6lowpan/tx.c b/net/ieee802154/6lowpan/tx.c
index 5ecf8af7154b..3b665e12cf2b 100644
--- a/net/ieee802154/6lowpan/tx.c
+++ b/net/ieee802154/6lowpan/tx.c
@@ -79,7 +79,7 @@ int lowpan_header_create(struct sk_buff *skb, struct net_device *ldev,
static struct sk_buff*
lowpan_alloc_frag(struct sk_buff *skb, int size,
- const struct ieee802154_hdr *master_hdr)
+ const struct ieee802154_hdr *master_hdr, bool frag1)
{
struct net_device *wdev = lowpan_dev_info(skb->dev)->wdev;
struct sk_buff *frag;
@@ -95,11 +95,17 @@ lowpan_alloc_frag(struct sk_buff *skb, int size,
skb_reset_network_header(frag);
*mac_cb(frag) = *mac_cb(skb);
- rc = wpan_dev_hard_header(frag, wdev, &master_hdr->dest,
- &master_hdr->source, size);
- if (rc < 0) {
- kfree_skb(frag);
- return ERR_PTR(rc);
+ if (frag1) {
+ memcpy(skb_put(frag, skb->mac_len),
+ skb_mac_header(skb), skb->mac_len);
+ } else {
+ rc = wpan_dev_hard_header(frag, wdev,
+ &master_hdr->dest,
+ &master_hdr->source, size);
+ if (rc < 0) {
+ kfree_skb(frag);
+ return ERR_PTR(rc);
+ }
}
} else {
frag = ERR_PTR(-ENOMEM);
@@ -111,13 +117,13 @@ lowpan_alloc_frag(struct sk_buff *skb, int size,
static int
lowpan_xmit_fragment(struct sk_buff *skb, const struct ieee802154_hdr *wpan_hdr,
u8 *frag_hdr, int frag_hdrlen,
- int offset, int len)
+ int offset, int len, bool frag1)
{
struct sk_buff *frag;
raw_dump_inline(__func__, " fragment header", frag_hdr, frag_hdrlen);
- frag = lowpan_alloc_frag(skb, frag_hdrlen + len, wpan_hdr);
+ frag = lowpan_alloc_frag(skb, frag_hdrlen + len, wpan_hdr, frag1);
if (IS_ERR(frag))
return PTR_ERR(frag);
@@ -156,7 +162,8 @@ lowpan_xmit_fragmented(struct sk_buff *skb, struct net_device *ldev,
rc = lowpan_xmit_fragment(skb, wpan_hdr, frag_hdr,
LOWPAN_FRAG1_HEAD_SIZE, 0,
- frag_len + skb_network_header_len(skb));
+ frag_len + skb_network_header_len(skb),
+ true);
if (rc) {
pr_debug("%s unable to send FRAG1 packet (tag: %d)",
__func__, ntohs(frag_tag));
@@ -177,7 +184,7 @@ lowpan_xmit_fragmented(struct sk_buff *skb, struct net_device *ldev,
rc = lowpan_xmit_fragment(skb, wpan_hdr, frag_hdr,
LOWPAN_FRAGN_HEAD_SIZE, skb_offset,
- frag_len);
+ frag_len, false);
if (rc) {
pr_debug("%s unable to send a FRAGN packet. (tag: %d, offset: %d)\n",
__func__, ntohs(frag_tag), skb_offset);