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hook_pkt_event(9s)
Kernel & Driver Data Structures hook_pkt_event(9S)
NAME
hook_pkt_event - packet event structure passed through to hooks
SYNOPSIS
#include <sys/neti.h>
#include <sys/hook.h>
#include <sys/hook_event.h>
INTERFACE LEVEL
Solaris DDI specific (Solaris DDI).
DESCRIPTION
The hook_pkt_event structure contains fields that relate to a packet in
a network protocol handler. This structure is passed through to a call‐
back 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
STRUCTURE MEMBERS
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_pro‐
tocol_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 possi‐
ble 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.
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) ATTRIBUTE TYPEAT‐
TRIBUTE VALUE _ Interface StabilityCommitted
SEE ALSO
net_protocol_lookup(9F), netinfo(9F)
Oracle Solaris 11.4 1 May 2008 hook_pkt_event(9S)