Man page of hook_pkt_event
Section: Data Structures for Drivers (9S)
Updated: 1 May 2008
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hook_pkt_event - packet event structure passed through to hooks
Solaris DDI specific (Solaris DDI).
The hook_pkt_event structure contains fields that relate to a packet in a network protocol handler. This structure is passed through to a callback for NH_PRE_ROUTING, NH_POST_ROUTING, NH_FORWARDING, NH_LOOPBACK_IN and NH_LOOPBACK_OUT events.
A callback may only modify the hpe_hdr, hpe_mp and hpe_mb fields.
The following table documents which fields can be safely used as a result of each event.
Event hpe_ifp hpe_ofp hpe_hdr hpe_mp hpe_mb
----- ------- ------- ------- ------ ------
NH_PRE_ROUTING yes yes yes yes
NH_POST_ROUTING yes yes yes yes
NH_FORWARDING yes yes yes yes yes
NH_LOOPBACK_IN yes yes yes yes
NH_LOOPBACK_OUT yes yes yes yes
The following fields are set for each event:
The protocol family for this packet. This value matches the corresponding value returned from a call to net_protocol_lookup(9F).
The inbound interface for a packet.
The outbound interface for a packet.
Pointer to the start of the network protocol header within an mblk_t structure.
Pointer to the mblk_t pointer that points to the first mblk_t structure in this packet.
Pointer to the mblk_t structure that contains hpe_hdr.
This field is used to carry additional properties of packets. The current collection of defined bits available is:
This bit is set if the packet was recognized as a broadcast packet from the link layer. The bit cannot be set if HPE_MULTICAST is set, currently only possible with physical in packet events.
This set if the packet was recognized as a multicast packet from the link layer. This bit cannot be set if HPE_BROADCAST is set, currently only possible with physical in packet events.
See attributes(5) for descriptions of the following attributes:
|ATTRIBUTE TYPE||ATTRIBUTE VALUE|
- INTERFACE LEVEL
- STRUCTURE MEMBERS
- SEE ALSO
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Time: 02:36:24 GMT, October 02, 2010