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#include <sys/neti.h> #include <sys/hook.h> #include <sys/hook_event.h>
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
net_data_t hne_family; phy_if_t hpe_ifp; phy_if_t hpe_ofp; void *hpe_hdr; mblk_t *hpe_mp; mblk_t *hpe_mb; uint32_t hpe_flags;
The following fields are set for each event:
hne_family
The protocol family for this packet. This value matches the corresponding value returned from a call to net_protocol_lookup(9F).
hpe_ifp
The inbound interface for a packet.
hpe_ofp
The outbound interface for a packet.
hpe_hdr
Pointer to the start of the network protocol header within an mblk_t structure.
hpe_mp
Pointer to the mblk_t pointer that points to the first mblk_t structure in this packet.
hpe_mb
Pointer to the mblk_t structure that contains hpe_hdr.
hpe_flags
This field is used to carry additional properties of packets. The current collection of defined bits available is:
HPE_BROADCAST
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.
HPE_MULTICAST
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 Stability | Committed |
net_protocol_lookup(9F), netinfo(9F)