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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include <sys/types.h>
#include <sys/stream.h>
#include <sys/dlpi.h>
#include <sys/strsun.h>
#include <netinet/in.h>
#include <netinet/ip6.h>
#include <inet/common.h>
#include <inet/ip.h>
#include <inet/ip6.h>
#include <inet/ip_if.h>
#include <ipp/dlcosmk/dlcosmk_impl.h>
/* Module to mark the 802.1d user priority field for a given packet */
/* Debug level */
int dlcosmk_debug = 0;
/*
* Given a packet, this module marks the mblk with the appropriate b_band or
* dl_max value so that the VLAN driver marks the outgoing frame with the
* configured 802.1D user_priority value. For non-VLAN devices or for inbound
* packets, this module does not do anything (i.e. the packet is processed by
* the next action in the list, if present).
* This module does not free any mblks or packets in case or errors.
*/
int
dlcosmk_process(mblk_t **mpp, dlcosmk_data_t *dlcosmk_data, uint32_t ill_index,
ip_proc_t proc)
{
ill_t *ill = NULL;
mblk_t *mp;
ASSERT((mpp != NULL) && (*mpp != NULL));
mp = *mpp;
/*
* The action module will receive an M_DATA or an M_CTL followed
* by an M_DATA. In the latter case skip the M_CTL.
*/
if (mp->b_datap->db_type != M_DATA) {
if ((mp->b_cont == NULL) ||
(mp->b_cont->b_datap->db_type != M_DATA)) {
atomic_inc_64(&dlcosmk_data->epackets);
dlcosmk0dbg(("dlcosmk_process: no data\n"));
return (EINVAL);
}
}
/* Update global stats */
atomic_inc_64(&dlcosmk_data->npackets);
/*
* This should only be called for outgoing packets. For inbound, just
* send it along.
*/
if ((proc == IPP_LOCAL_IN) || (proc == IPP_FWD_IN)) {
dlcosmk2dbg(("dlcosmk_process:cannot mark incoming packets\n"));
atomic_inc_64(&dlcosmk_data->ipackets);
return (0);
}
if ((ill_index == 0) ||
((ill = ill_lookup_on_ifindex_global_instance(ill_index,
B_FALSE)) == NULL)) {
dlcosmk2dbg(("dlcosmk_process:invalid ill index %u\n",
ill_index));
atomic_inc_64(&dlcosmk_data->ipackets);
return (0);
}
/*
* Check if the interface supports CoS marking. If not send it to the
* next action in the chain
*/
if (!(ill->ill_flags & ILLF_COS_ENABLED)) {
dlcosmk2dbg(("dlcosmk_process:ill %u does not support CoS\n",
ill_index));
atomic_inc_64(&dlcosmk_data->ipackets);
ill_refrele(ill);
return (0);
}
ill_refrele(ill);
/*
* Mark the b_band for fastpath messages or dl_priority.dl_max for
* DL_UNITDATA_REQ messages. For, others just pass it along.
*/
switch (DB_TYPE(mp)) {
case M_PROTO:
case M_PCPROTO:
{ /* DL_UNITDATA */
dl_unitdata_req_t *dlur;
dlur = (dl_unitdata_req_t *)mp->b_rptr;
/* DL_UNITDATA message?? */
if (dlur->dl_primitive == DL_UNITDATA_REQ) {
dlur->dl_priority.dl_max =
dlcosmk_data->dl_max;
} else {
atomic_inc_64(&dlcosmk_data->ipackets);
}
break;
}
case M_DATA:
/* fastpath message */
mp->b_band = dlcosmk_data->b_band;
break;
default:
atomic_inc_64(&dlcosmk_data->ipackets);
break;
}
return (0);
}
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