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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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28
src/include/ipxe/netdevice.h
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@@ -66,20 +66,23 @@ struct net_protocol {
/**
* Process received packet
*
* @v iobuf I/O buffer
* @v netdev Network device
* @v ll_dest Link-layer destination address
* @v ll_source Link-layer source address
* @v iobuf I/O buffer
* @v netdev Network device
* @v ll_dest Link-layer destination address
* @v ll_source Link-layer source address
* @v flags Packet flags
* @ret rc Return status code
*
* This method takes ownership of the I/O buffer.
*/
int ( * rx ) ( struct io_buffer *iobuf, struct net_device *netdev,
const void *ll_dest, const void *ll_source );
const void *ll_dest, const void *ll_source,
unsigned int flags );
/**
* Transcribe network-layer address
*
* @v net_addr Network-layer address
* @ret string Human-readable transcription of address
* @v net_addr Network-layer address
* @ret string Human-readable transcription of address
*
* This method should convert the network-layer address into a
* human-readable format (e.g. dotted quad notation for IPv4).
@@ -97,6 +100,12 @@ struct net_protocol {
uint8_t net_addr_len;
};
/** Packet is a multicast (including broadcast) packet */
#define LL_MULTICAST 0x0001
/** Packet is a broadcast packet */
#define LL_BROADCAST 0x0002
/**
* A link-layer protocol
*
@@ -125,11 +134,12 @@ struct ll_protocol {
* @ret ll_dest Link-layer destination address
* @ret ll_source Source link-layer address
* @ret net_proto Network-layer protocol, in network-byte order
* @ret flags Packet flags
* @ret rc Return status code
*/
int ( * pull ) ( struct net_device *netdev, struct io_buffer *iobuf,
const void **ll_dest, const void **ll_source,
uint16_t *net_proto );
uint16_t *net_proto, unsigned int *flags );
/**
* Initialise link-layer address
*
@@ -611,7 +621,7 @@ extern int net_tx ( struct io_buffer *iobuf, struct net_device *netdev,
const void *ll_source );
extern int net_rx ( struct io_buffer *iobuf, struct net_device *netdev,
uint16_t net_proto, const void *ll_dest,
const void *ll_source );
const void *ll_source, unsigned int flags );
extern void net_poll ( void );
/**