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'\" te .\" Copyright (c) 2008, 2020, Oracle and/or its affiliates. .TH hook_pkt_event 9S "1 May 2008" "Oracle Solaris 11.4" "Kernel & Driver Data Structures" .SH NAME hook_pkt_event \- packet event structure passed through to hooks .SH SYNOPSIS .LP .nf #include <sys/neti.h> #include <sys/hook.h> #include <sys/hook_event.h> .fi .SH INTERFACE LEVEL .sp .LP Solaris DDI specific (Solaris DDI). .SH DESCRIPTION .sp .LP The \fBhook_pkt_event\fR structure contains fields that relate to a packet in a network protocol handler. This structure is passed through to a callback for \fBNH_PRE_ROUTING\fR, \fBNH_POST_ROUTING\fR, \fBNH_FORWARDING\fR, \fBNH_LOOPBACK_IN\fR and \fBNH_LOOPBACK_OUT\fR events. .sp .LP A callback may only modify the \fBhpe_hdr\fR, \fBhpe_mp\fR and \fBhpe_mb\fR fields. .sp .LP The following table documents which fields can be safely used as a result of each event. .sp .in +2 .nf 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 .fi .in -2 .sp .SH STRUCTURE MEMBERS .sp .in +2 .nf 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; .fi .in -2 .sp .sp .LP The following fields are set for each event: .sp .ne 2 .mk .na \fB\fBhne_family\fR\fR .ad .RS 14n .rt The protocol family for this packet. This value matches the corresponding value returned from a call to \fBnet_protocol_lookup\fR(9F). .RE .sp .ne 2 .mk .na \fB\fBhpe_ifp\fR\fR .ad .RS 14n .rt The inbound interface for a packet. .RE .sp .ne 2 .mk .na \fB\fBhpe_ofp\fR\fR .ad .RS 14n .rt The outbound interface for a packet. .RE .sp .ne 2 .mk .na \fB\fBhpe_hdr\fR\fR .ad .RS 14n .rt Pointer to the start of the network protocol header within an \fBmblk_t\fR structure. .RE .sp .ne 2 .mk .na \fB\fBhpe_mp\fR\fR .ad .RS 14n .rt Pointer to the \fBmblk_t\fR pointer that points to the first \fBmblk_t\fR structure in this packet. .RE .sp .ne 2 .mk .na \fB\fBhpe_mb\fR\fR .ad .RS 14n .rt Pointer to the \fBmblk_t\fR structure that contains \fBhpe_hdr\fR. .RE .sp .ne 2 .mk .na \fB\fBhpe_flags\fR\fR .ad .RS 14n .rt This field is used to carry additional properties of packets. The current collection of defined bits available is: .sp .ne 2 .mk .na \fB\fBHPE_BROADCAST\fR\fR .ad .br .sp .6 .RS 4n This bit is set if the packet was recognized as a broadcast packet from the link layer. The bit cannot be set if \fBHPE_MULTICAST\fR is set, currently only possible with physical in packet events. .RE .sp .ne 2 .mk .na \fB\fBHPE_MULTICAST\fR\fR .ad .br .sp .6 .RS 4n This set if the packet was recognized as a multicast packet from the link layer. This bit cannot be set if \fBHPE_BROADCAST\fR is set, currently only possible with physical in packet events. .RE .RE .SH ATTRIBUTES .sp .LP See \fBattributes\fR(7) for descriptions of the following attributes: .sp .TS tab( ) box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) . ATTRIBUTE TYPE ATTRIBUTE VALUE _ Interface Stability Committed .TE .sp .SH SEE ALSO .sp .LP \fBnet_protocol_lookup\fR(9F), \fBnetinfo\fR(9F)