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| author | Alexander Aring <alex.aring@gmail.com> | 2015-09-18 11:30:42 +0200 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2015-09-22 11:51:20 +0200 |
| commit | 838b83d63d2909f9136f3030dc4fffa8230c31da (patch) | |
| tree | 7efa76e2b2a2df882e4ad941ef01806ad0664e94 /net/ieee802154/6lowpan/tx.c | |
| parent | ieee802154: header_ops: fix frame control setting (diff) | |
| download | linux-838b83d63d2909f9136f3030dc4fffa8230c31da.tar.xz linux-838b83d63d2909f9136f3030dc4fffa8230c31da.zip | |
ieee802154: introduce wpan_dev_header_ops
The current header_ops callback structure of net device are used mostly
from 802.15.4 upper-layers. Because this callback structure is a very
generic one, which is also used by e.g. DGRAM AF_PACKET sockets, we
can't make this callback structure 802.15.4 specific which is currently
is.
I saw the smallest "constraint" for calling this callback with
dev_hard_header/dev_parse_header by AF_PACKET which assign a 8 byte
array for address void pointers. Currently 802.15.4 specific protocols
like af802154 and 6LoWPAN will assign the "struct ieee802154_addr" as
these parameters which is greater than 8 bytes. The current callback
implementation for header_ops.create assumes always a complete
"struct ieee802154_addr" which AF_PACKET can't never handled and is
greater than 8 bytes.
For that reason we introduce now a "generic" create/parse header_ops
callback which allows handling with intra-pan extended addresses only.
This allows a small use-case with AF_PACKET to send "somehow" a valid
dataframe over DGRAM.
To keeping the current dev_hard_header behaviour we introduce a similar
callback structure "wpan_dev_header_ops" which contains 802.15.4 specific
upper-layer header creation functionality, which can be called by
wpan_dev_hard_header.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net/ieee802154/6lowpan/tx.c')
| -rw-r--r-- | net/ieee802154/6lowpan/tx.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/net/ieee802154/6lowpan/tx.c b/net/ieee802154/6lowpan/tx.c index 54939d031ea5..6067e064a3fe 100644 --- a/net/ieee802154/6lowpan/tx.c +++ b/net/ieee802154/6lowpan/tx.c @@ -87,8 +87,8 @@ lowpan_alloc_frag(struct sk_buff *skb, int size, skb_reset_network_header(frag); *mac_cb(frag) = *mac_cb(skb); - rc = dev_hard_header(frag, wdev, 0, &master_hdr->dest, - &master_hdr->source, size); + rc = wpan_dev_hard_header(frag, wdev, &master_hdr->dest, + &master_hdr->source, size); if (rc < 0) { kfree_skb(frag); return ERR_PTR(rc); @@ -228,8 +228,8 @@ static int lowpan_header(struct sk_buff *skb, struct net_device *ldev, cb->ackreq = wpan_dev->ackreq; } - return dev_hard_header(skb, lowpan_dev_info(ldev)->wdev, ETH_P_IPV6, - (void *)&da, (void *)&sa, 0); + return wpan_dev_hard_header(skb, lowpan_dev_info(ldev)->wdev, &da, &sa, + 0); } netdev_tx_t lowpan_xmit(struct sk_buff *skb, struct net_device *ldev) |