diff options
| author | Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de> | 2014-03-14 21:24:03 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-03-14 22:15:26 -0400 |
| commit | a13061ec04e9168625427a591235b167d5499bc6 (patch) | |
| tree | 153f6ffdc04fcc15746c69e7155de73c0de78b0f /net/ieee802154/reassembly.c | |
| parent | ae531b9475f62c5e1863508604cd6b3faf362d56 (diff) | |
| download | linux-a13061ec04e9168625427a591235b167d5499bc6.tar.bz2 | |
6lowpan: move lowpan frag_info out of 802.15.4 headers
Fragmentation and reassembly information for 6lowpan is independent from
the 802.15.4 stack and used only by the 6lowpan reassembly process. Move
the ieee802154_frag_info struct to a private are, it needn't be in the
802.15.4 skb control block.
Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ieee802154/reassembly.c')
| -rw-r--r-- | net/ieee802154/reassembly.c | 27 |
1 files changed, 18 insertions, 9 deletions
diff --git a/net/ieee802154/reassembly.c b/net/ieee802154/reassembly.c index a2b9e4e533f8..ef2d54372b13 100644 --- a/net/ieee802154/reassembly.c +++ b/net/ieee802154/reassembly.c @@ -30,6 +30,17 @@ #include "reassembly.h" +struct lowpan_frag_info { + __be16 d_tag; + u16 d_size; + u8 d_offset; +}; + +struct lowpan_frag_info *lowpan_cb(struct sk_buff *skb) +{ + return (struct lowpan_frag_info *)skb->cb; +} + static struct inet_frags lowpan_frags; static int lowpan_frag_reasm(struct lowpan_frag_queue *fq, @@ -102,7 +113,7 @@ out: } static inline struct lowpan_frag_queue * -fq_find(struct net *net, const struct ieee802154_frag_info *frag_info, +fq_find(struct net *net, const struct lowpan_frag_info *frag_info, const struct ieee802154_addr *src, const struct ieee802154_addr *dst) { @@ -137,8 +148,8 @@ static int lowpan_frag_queue(struct lowpan_frag_queue *fq, if (fq->q.last_in & INET_FRAG_COMPLETE) goto err; - offset = mac_cb(skb)->frag_info.d_offset << 3; - end = mac_cb(skb)->frag_info.d_size; + offset = lowpan_cb(skb)->d_offset << 3; + end = lowpan_cb(skb)->d_size; /* Is this the final fragment? */ if (offset + skb->len == end) { @@ -164,15 +175,13 @@ static int lowpan_frag_queue(struct lowpan_frag_queue *fq, * this fragment, right? */ prev = fq->q.fragments_tail; - if (!prev || mac_cb(prev)->frag_info.d_offset < - mac_cb(skb)->frag_info.d_offset) { + if (!prev || lowpan_cb(prev)->d_offset < lowpan_cb(skb)->d_offset) { next = NULL; goto found; } prev = NULL; for (next = fq->q.fragments; next != NULL; next = next->next) { - if (mac_cb(next)->frag_info.d_offset >= - mac_cb(skb)->frag_info.d_offset) + if (lowpan_cb(next)->d_offset >= lowpan_cb(skb)->d_offset) break; /* bingo! */ prev = next; } @@ -319,7 +328,7 @@ out_oom: } static int lowpan_get_frag_info(struct sk_buff *skb, const u8 frag_type, - struct ieee802154_frag_info *frag_info) + struct lowpan_frag_info *frag_info) { bool fail; u8 pattern = 0, low = 0; @@ -346,7 +355,7 @@ int lowpan_frag_rcv(struct sk_buff *skb, const u8 frag_type) { struct lowpan_frag_queue *fq; struct net *net = dev_net(skb->dev); - struct ieee802154_frag_info *frag_info = &mac_cb(skb)->frag_info; + struct lowpan_frag_info *frag_info = lowpan_cb(skb); struct ieee802154_addr source, dest; int err; |