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[netdevice] Add MAX_NET_HEADER_LEN and MAX_LL_NET_HEADER_LEN

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Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown 2010-11-19 15:45:01 +00:00
parent fb78d086f1
commit 0d7839678b
1 changed files with 10 additions and 0 deletions
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10
src/include/ipxe/netdevice.h
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@ -45,6 +45,16 @@ struct device;
/** Maximum length of a network-layer address */
#define MAX_NET_ADDR_LEN 4
/** Maximum length of a network-layer header
*
* The longest currently-supported network-layer header is for IPv6 at
* 40 bytes.
*/
#define MAX_NET_HEADER_LEN 40
/** Maximum combined length of a link-layer and network-layer header */
#define MAX_LL_NET_HEADER_LEN ( MAX_LL_HEADER_LEN + MAX_NET_HEADER_LEN )
/**
* A network-layer protocol
*