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[netdevice] Allow link layer to report broadcast/multicast packets via pull()

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Allow the link layer to directly report whether or not a packet is
multicast or broadcast at the time of calling pull(), rather than
relying on heuristics to determine this at a later stage.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2011-07-15 18:48:46 +01:00
parent 69b7d57265
commit a667bf044a
17 changed files with 99 additions and 43 deletions
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10
src/net/80211/net80211.c
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@@ -135,7 +135,8 @@ static int net80211_ll_push ( struct net_device *netdev,
const void *ll_source, uint16_t net_proto );
static int net80211_ll_pull ( struct net_device *netdev,
struct io_buffer *iobuf, const void **ll_dest,
const void **ll_source, uint16_t * net_proto );
const void **ll_source, uint16_t * net_proto,
unsigned int *flags );
/** @} */
/**
@@ -529,6 +530,7 @@ static int net80211_ll_push ( struct net_device *netdev,
* @ret ll_dest Link-layer destination address
* @ret ll_source Link-layer source
* @ret net_proto Network-layer protocol, in network byte order
* @ret flags Packet flags
* @ret rc Return status code
*
* This expects and removes both the 802.11 frame header and the 802.2
@@ -537,7 +539,7 @@ static int net80211_ll_push ( struct net_device *netdev,
static int net80211_ll_pull ( struct net_device *netdev __unused,
struct io_buffer *iobuf,
const void **ll_dest, const void **ll_source,
uint16_t * net_proto )
uint16_t * net_proto, unsigned int *flags )
{
struct ieee80211_frame *hdr = iobuf->data;
struct ieee80211_llc_snap_header *lhdr =
@@ -586,6 +588,10 @@ static int net80211_ll_pull ( struct net_device *netdev __unused,
*ll_dest = hdr->addr1;
*ll_source = hdr->addr3;
*net_proto = lhdr->ethertype;
*flags = ( ( is_multicast_ether_addr ( hdr->addr1 ) ?
LL_MULTICAST : 0 ) |
( is_broadcast_ether_addr ( hdr->addr1 ) ?
LL_BROADCAST : 0 ) );
return 0;
}