/*
* 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 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* DL_IB MAC Type plugin for the Nemo mac module
*/
#include <sys/types.h>
#include <sys/modctl.h>
#include <sys/dlpi.h>
#include <sys/ib/clients/ibd/ibd.h>
#include <sys/mac.h>
#include <sys/mac_ib.h>
#include <sys/dls.h>
#include <sys/byteorder.h>
#include <sys/strsun.h>
#include <inet/common.h>
#include <sys/note.h>
static uint8_t ib_brdcst[] = { 0x00, 0xff, 0xff, 0xff,
0xff, 0x10, 0x40, 0x1b, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff };
static struct modlmisc mac_ib_modlmisc = {
&mod_miscops,
"Infiniband MAC Type plugin 1.0"
};
static struct modlinkage mac_ib_modlinkage = {
MODREV_1,
&mac_ib_modlmisc,
NULL
};
static mactype_ops_t mac_ib_type_ops;
int
_init(void)
{
mactype_register_t *mtrp;
int err;
if ((mtrp = mactype_alloc(MACTYPE_VERSION)) == NULL)
return (ENOTSUP);
mtrp->mtr_ident = MAC_PLUGIN_IDENT_IB;
mtrp->mtr_ops = &mac_ib_type_ops;
mtrp->mtr_mactype = DL_IB;
mtrp->mtr_nativetype = DL_IB;
mtrp->mtr_addrlen = IPOIB_ADDRL;
mtrp->mtr_brdcst_addr = ib_brdcst;
/*
* So far, generic stats maintained by GLDv3 are sufficient for IB.
*/
mtrp->mtr_stats = NULL;
mtrp->mtr_statcount = 0;
if ((err = mactype_register(mtrp)) == 0) {
if ((err = mod_install(&mac_ib_modlinkage)) != 0)
(void) mactype_unregister(MAC_PLUGIN_IDENT_IB);
}
mactype_free(mtrp);
return (err);
}
int
_fini(void)
{
int err;
if ((err = mactype_unregister(MAC_PLUGIN_IDENT_IB)) != 0)
return (err);
return (mod_remove(&mac_ib_modlinkage));
}
int
_info(struct modinfo *modinfop)
{
return (mod_info(&mac_ib_modlinkage, modinfop));
}
/*
* MAC Type plugin operations
*/
/* ARGSUSED */
int
mac_ib_unicst_verify(const void *addr, void *mac_pdata)
{
ipoib_mac_t *ibaddr = (ipoib_mac_t *)addr;
/*
* The address must not be a multicast address.
*/
return (ntohl(ibaddr->ipoib_qpn) == IB_MC_QPN ? EINVAL : 0);
}
int
mac_ib_multicst_verify(const void *addr, void *mac_pdata)
{
ipoib_mac_t *ibaddr = (ipoib_mac_t *)addr;
uint8_t *p_gid = (uint8_t *)addr + sizeof (ipoib_mac_t)
- MAC_IB_GID_SIZE;
uint32_t bcst_gid[3] = { 0x0, 0x0, MAC_IB_BROADCAST_GID };
_NOTE(ARGUNUSED(mac_pdata));
/*
* The address must be a multicast address.
*/
if ((ntohl(ibaddr->ipoib_qpn) & IB_QPN_MASK) != IB_MC_QPN)
return (EINVAL);
/*
* The address must not be the broadcast address.
*/
if (bcmp(p_gid, (uint8_t *)bcst_gid + sizeof (bcst_gid) -
MAC_IB_GID_SIZE, MAC_IB_GID_SIZE) == 0)
return (EINVAL);
return (0);
}
/*
* Check the legality of a SAP value. The following values are
* allowed, as specified by PSARC 2003/150:
*
* min-ethertype-sap (256).. EtherType max(65535) ethertype semantics
* (0) .. max-802-sap(255) IEEE 802 semantics
*/
boolean_t
mac_ib_sap_verify(uint32_t sap, uint32_t *bind_sap, void *mac_pdata)
{
_NOTE(ARGUNUSED(mac_pdata));
if (sap > MAC_IB_MAX_802_SAP && sap <= MAC_IB_ETHERTYPE_MAX) {
if (bind_sap != NULL)
*bind_sap = sap;
return (B_TRUE);
}
if (sap <= MAC_IB_MAX_802_SAP) {
if (bind_sap != NULL)
*bind_sap = DLS_SAP_LLC;
return (B_TRUE);
}
return (B_FALSE);
}
/* ARGSUSED */
mblk_t *
mac_ib_header(const void *saddr, const void *daddr, uint32_t sap,
void *mac_pdata, mblk_t *payload, size_t extra_len)
{
ib_header_info_t *ibhp;
mblk_t *mp;
if (!mac_ib_sap_verify(sap, NULL, NULL))
return (NULL);
mp = allocb(sizeof (ib_header_info_t) + extra_len, BPRI_HI);
if (mp == NULL)
return (NULL);
ibhp = (void *)mp->b_rptr;
ibhp->ipib_rhdr.ipoib_type = htons(sap);
ibhp->ipib_rhdr.ipoib_mbz = 0;
bcopy(daddr, &ibhp->ib_dst, IPOIB_ADDRL);
mp->b_wptr += sizeof (ib_header_info_t);
return (mp);
}
int
mac_ib_header_info(mblk_t *mp, void *mac_pdata, mac_header_info_t *hdr_info)
{
ib_header_info_t *ibhp;
uint16_t sap;
if (MBLKL(mp) < sizeof (ib_header_info_t))
return (EINVAL);
ibhp = (void *)mp->b_rptr;
hdr_info->mhi_hdrsize = sizeof (ib_header_info_t);
hdr_info->mhi_daddr = (const uint8_t *)&(ibhp->ib_dst);
if (ibhp->ib_grh.ipoib_vertcflow != 0)
hdr_info->mhi_saddr = (const uint8_t *)&(ibhp->ib_src);
else
hdr_info->mhi_saddr = NULL;
if (mac_ib_unicst_verify(hdr_info->mhi_daddr, mac_pdata) == 0) {
hdr_info->mhi_dsttype = MAC_ADDRTYPE_UNICAST;
} else if (mac_ib_multicst_verify(hdr_info->mhi_daddr,
mac_pdata) == 0) {
hdr_info->mhi_dsttype = MAC_ADDRTYPE_MULTICAST;
} else {
hdr_info->mhi_dsttype = MAC_ADDRTYPE_BROADCAST;
}
sap = ntohs(ibhp->ipib_rhdr.ipoib_type);
hdr_info->mhi_origsap = hdr_info->mhi_bindsap = sap;
hdr_info->mhi_pktsize = 0;
return (0);
}
/*
* Take the provided `mp' (which is expected to have a header "dst + type"),
* and return a pointer to an mblk_t with a header "GRH + type".
* If the conversion cannot be performed, return NULL.
*/
static mblk_t *
mac_ib_header_cook(mblk_t *mp, void *pdata)
{
ipoib_ptxhdr_t *orig_hp;
mblk_t *llmp;
if (MBLKL(mp) < sizeof (ipoib_ptxhdr_t))
return (NULL);
orig_hp = (void *)mp->b_rptr;
llmp = mac_ib_header(NULL, &orig_hp->ipoib_dest,
ntohs(orig_hp->ipoib_rhdr.ipoib_type), pdata, NULL, 0);
if (llmp == NULL)
return (NULL);
/*
* The plugin framework guarantees that we have the only reference
* to the mblk_t, so we can safely modify it.
*/
ASSERT(DB_REF(mp) == 1);
mp->b_rptr += sizeof (ipoib_ptxhdr_t);
llmp->b_cont = mp;
return (llmp);
}
/*
* Take the provided `mp' (which is expected to have a header "GRH + type"),
* and return a pointer to an mblk_t with a header "type". If the conversion
* cannot be performed, return NULL.
*/
static mblk_t *
mac_ib_header_uncook(mblk_t *mp, void *pdata)
{
_NOTE(ARGUNUSED(pdata));
/*
* The plugin framework guarantees that we have the only reference to
* the mblk_t and the underlying dblk_t, so we can safely modify it.
*/
ASSERT(DB_REF(mp) == 1);
mp->b_rptr += sizeof (ib_addrs_t);
return (mp);
}
void
mac_ib_link_details(char *buf, size_t sz, mac_handle_t mh, void *mac_pdata)
{
uint64_t speed;
_NOTE(ARGUNUSED(mac_pdata));
speed = mac_stat_get(mh, MAC_STAT_IFSPEED);
/* convert to Mbps */
speed /= 1000000;
buf[0] = 0;
(void) snprintf(buf, sz, "%u Mbps", (uint32_t)speed);
}
static mactype_ops_t mac_ib_type_ops = {
MTOPS_HEADER_COOK | MTOPS_HEADER_UNCOOK | MTOPS_LINK_DETAILS,
mac_ib_unicst_verify,
mac_ib_multicst_verify,
mac_ib_sap_verify,
mac_ib_header,
mac_ib_header_info,
NULL,
mac_ib_header_cook,
mac_ib_header_uncook,
mac_ib_link_details
};