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| author | Tony Cheneau <tony.cheneau@amnesiak.org> | 2013-03-25 21:59:28 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-03-26 20:37:57 +0400 |
| commit | d4ac32365dcbfd341a87eae444c26679f889249a (patch) | |
| tree | 7457f5ee540426d6e16081209368445af9aeae7d | |
| parent | 9da2924c4ba8da5f41285c98eb1ba9aee99344a4 (diff) | |
| download | linux-d4ac32365dcbfd341a87eae444c26679f889249a.tar.xz | |
6lowpan: store fragment tag values per device instead of net stack wide
Signed-off-by: Tony Cheneau <tony.cheneau@amnesiak.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/ieee802154/6lowpan.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/net/ieee802154/6lowpan.c b/net/ieee802154/6lowpan.c index 61eee9d0dd21..f9524513847a 100644 --- a/net/ieee802154/6lowpan.c +++ b/net/ieee802154/6lowpan.c @@ -104,6 +104,7 @@ static const u8 lowpan_llprefix[] = {0xfe, 0x80}; struct lowpan_dev_info { struct net_device *real_dev; /* real WPAN device ptr */ struct mutex dev_list_mtx; /* mutex for list ops */ + unsigned short fragment_tag; }; struct lowpan_dev_record { @@ -120,7 +121,6 @@ struct lowpan_fragment { struct list_head list; /* fragments list */ }; -static unsigned short fragment_tag; static LIST_HEAD(lowpan_fragments); static DEFINE_SPINLOCK(flist_lock); @@ -1027,14 +1027,14 @@ lowpan_fragment_xmit(struct sk_buff *skb, u8 *head, } static int -lowpan_skb_fragmentation(struct sk_buff *skb) +lowpan_skb_fragmentation(struct sk_buff *skb, struct net_device *dev) { int err, header_length, payload_length, tag, offset = 0; u8 head[5]; header_length = lowpan_get_mac_header_length(skb); payload_length = skb->len - header_length; - tag = fragment_tag++; + tag = lowpan_dev_info(dev)->fragment_tag++; /* first fragment header */ head[0] = LOWPAN_DISPATCH_FRAG1 | ((payload_length >> 8) & 0x7); @@ -1099,7 +1099,7 @@ static netdev_tx_t lowpan_xmit(struct sk_buff *skb, struct net_device *dev) } pr_debug("frame is too big, fragmentation is needed\n"); - err = lowpan_skb_fragmentation(skb); + err = lowpan_skb_fragmentation(skb, dev); error: dev_kfree_skb(skb); out: @@ -1243,6 +1243,7 @@ static int lowpan_newlink(struct net *src_net, struct net_device *dev, return -ENODEV; lowpan_dev_info(dev)->real_dev = real_dev; + lowpan_dev_info(dev)->fragment_tag = 0; mutex_init(&lowpan_dev_info(dev)->dev_list_mtx); entry = kzalloc(sizeof(struct lowpan_dev_record), GFP_KERNEL); |