/*
* Clients like aggr create pseudo rings (mac_ring_t) and expose them to
* their clients. There is a 1-1 mapping pseudo ring and the hardware
* ring. ddi interrupt handles are exported from the hardware ring to
* the pseudo ring. Thus when the interrupt handle changes, clients of
* aggr that are using the handle need to use the new handle and
* re-target their interrupts.
*/
static void
mac_pseudo_ring_intr_retarget(mac_impl_t *mip, mac_ring_t *ring,
ddi_intr_handle_t ddh)
{
mac_ring_t *pring;
mac_group_t *pgroup;
mac_impl_t *pmip;
char macname[MAXNAMELEN];
mac_perim_handle_t p_mph;
uint64_t saved_gen_num;
again:
pring = (mac_ring_t *)ring->mr_prh;
pgroup = (mac_group_t *)pring->mr_gh;
pmip = (mac_impl_t *)pgroup->mrg_mh;
saved_gen_num = ring->mr_gen_num;
(void) strlcpy(macname, pmip->mi_name, MAXNAMELEN);
/*
* We need to enter aggr's perimeter. The locking hierarchy
* dictates that aggr's perimeter should be entered first
* and then the port's perimeter. So drop the port's
* perimeter, enter aggr's and then re-enter port's
* perimeter.
*/
i_mac_perim_exit(mip);
/*
* While we know pmip is the aggr's mip, there is a
* possibility that aggr could have unregistered by
* the time we exit port's perimeter (mip) and
* enter aggr's perimeter (pmip). To avoid that
* scenario, enter aggr's perimeter using its name.
*/
if (mac_perim_enter_by_macname(macname, &p_mph) != 0)
return;
i_mac_perim_enter(mip);
/*
* Check if the ring got assigned to another aggregation before
* be could enter aggr's and the port's perimeter. When a ring
* gets deleted from an aggregation, it calls mac_stop_ring()
* which increments the generation number. So checking
* generation number will be enough.
*/
if (ring->mr_gen_num != saved_gen_num && ring->mr_prh != NULL) {
i_mac_perim_exit(mip);
mac_perim_exit(p_mph);
i_mac_perim_enter(mip);
goto again;
}
/* Check if pseudo ring is still present */
if (ring->mr_prh != NULL) {
pring->mr_info.mri_intr.mi_ddi_handle = ddh;
pring->mr_info.mri_intr.mi_ddi_shared =
ring->mr_info.mri_intr.mi_ddi_shared;
if (ddh != NULL)
mac_ring_intr_retarget(pgroup, pring);
}
i_mac_perim_exit(mip);
mac_perim_exit(p_mph);
}
/*
* DL_ENABMULTI_REQ
*/
static void
proto_enabmulti_req(dld_str_t *dsp, mblk_t *mp)
{
dl_enabmulti_req_t *dlp = (dl_enabmulti_req_t *)mp->b_rptr;
int err = 0;
t_uscalar_t dl_err;
queue_t *q = dsp->ds_wq;
mac_perim_handle_t mph;
if (dsp->ds_dlstate == DL_UNATTACHED ||
DL_ACK_PENDING(dsp->ds_dlstate)) {
dl_err = DL_OUTSTATE;
goto failed;
}
if (MBLKL(mp) < sizeof (dl_enabmulti_req_t) ||
!MBLKIN(mp, dlp->dl_addr_offset, dlp->dl_addr_length) ||
dlp->dl_addr_length != dsp->ds_mip->mi_addr_length) {
dl_err = DL_BADPRIM;
goto failed;
}
mac_perim_enter_by_mh(dsp->ds_mh, &mph);
if ((dsp->ds_dmap == NULL) && (err = dls_active_set(dsp)) != 0) {
dl_err = DL_SYSERR;
goto failed2;
}
err = dls_multicst_add(dsp, mp->b_rptr + dlp->dl_addr_offset);
if (err != 0) {
switch (err) {
case EINVAL:
dl_err = DL_BADADDR;
err = 0;
break;
case ENOSPC:
dl_err = DL_TOOMANY;
err = 0;
break;
default:
dl_err = DL_SYSERR;
break;
}
if (dsp->ds_dmap == NULL)
dls_active_clear(dsp, B_FALSE);
goto failed2;
}
mac_perim_exit(mph);
dlokack(q, mp, DL_ENABMULTI_REQ);
return;
failed2:
mac_perim_exit(mph);
failed:
dlerrorack(q, mp, DL_ENABMULTI_REQ, dl_err, (t_uscalar_t)err);
}
/*
* DL_UNBIND_REQ
*/
static void
proto_unbind_req(dld_str_t *dsp, mblk_t *mp)
{
queue_t *q = dsp->ds_wq;
t_uscalar_t dl_err;
mac_perim_handle_t mph;
if (MBLKL(mp) < sizeof (dl_unbind_req_t)) {
dl_err = DL_BADPRIM;
goto failed;
}
if (dsp->ds_dlstate != DL_IDLE) {
dl_err = DL_OUTSTATE;
goto failed;
}
mutex_enter(&dsp->ds_lock);
while (dsp->ds_datathr_cnt != 0)
cv_wait(&dsp->ds_datathr_cv, &dsp->ds_lock);
dsp->ds_dlstate = DL_UNBIND_PENDING;
mutex_exit(&dsp->ds_lock);
mac_perim_enter_by_mh(dsp->ds_mh, &mph);
/*
* Unbind the channel to stop packets being received.
*/
dls_unbind(dsp);
/*
* Disable polling mode, if it is enabled.
*/
(void) dld_capab_poll_disable(dsp, NULL);
/*
* Clear LSO flags.
*/
dsp->ds_lso = B_FALSE;
dsp->ds_lso_max = 0;
/*
* Clear the receive callback.
*/
dls_rx_set(dsp, NULL, NULL);
dsp->ds_direct = B_FALSE;
/*
* Set the mode back to the default (unitdata).
*/
dsp->ds_mode = DLD_UNITDATA;
dsp->ds_dlstate = DL_UNBOUND;
dls_active_clear(dsp, B_FALSE);
mac_perim_exit(mph);
dlokack(dsp->ds_wq, mp, DL_UNBIND_REQ);
return;
failed:
dlerrorack(q, mp, DL_UNBIND_REQ, dl_err, 0);
}
/* ARGSUSED */
static void vnic_m_propinfo(void *m_driver, const char *pr_name,
mac_prop_id_t pr_num, mac_prop_info_handle_t prh)
{
vnic_t *vn = m_driver;
switch (pr_num) {
case MAC_PROP_MTU:
if (vn->vn_link_id == DATALINK_INVALID_LINKID) {
mac_prop_info_set_range_uint32(prh,
ANCHOR_VNIC_MIN_MTU, ANCHOR_VNIC_MAX_MTU);
} else {
uint32_t max;
mac_perim_handle_t mph;
mac_propval_range_t range;
/*
* The valid range for a VNIC's MTU is the minimum that
* the device supports and the current value of the
* device. A VNIC cannot increase the current MTU of the
* device. Therefore we need to get the range from the
* propinfo endpoint and current mtu from the
* traditional property endpoint.
*/
mac_perim_enter_by_mh(vn->vn_lower_mh, &mph);
if (mac_get_prop(vn->vn_lower_mh, MAC_PROP_MTU, "mtu",
&max, sizeof (uint32_t)) != 0) {
mac_perim_exit(mph);
return;
}
range.mpr_count = 1;
if (mac_prop_info(vn->vn_lower_mh, MAC_PROP_MTU, "mtu",
NULL, 0, &range, NULL) != 0) {
mac_perim_exit(mph);
return;
}
mac_prop_info_set_default_uint32(prh, max);
mac_prop_info_set_range_uint32(prh,
range.mpr_range_uint32[0].mpur_min, max);
mac_perim_exit(mph);
}
break;
}
}
static int
mac_bpf_getzone(uintptr_t handle, zoneid_t *zip)
{
mac_perim_handle_t mph;
int error;
mac_perim_enter_by_mh((mac_handle_t)handle, &mph);
error = dls_link_getzid(mac_name((mac_handle_t)handle), zip);
mac_perim_exit(mph);
return (error);
}
/*
* pfp_open_index is an internal function used to open a MAC device by
* its index. Both a mac_handle_t and mac_client_handle_t are acquired
* because some of the interfaces provided by the mac layer require either
* only the mac_handle_t or both it and mac_handle_t.
*
* Whilst inside the kernel we can access data structures supporting any
* zone, access to interfaces from non-global zones is restricted to those
* interfaces (if any) that are exclusively assigned to a zone.
*/
static int
pfp_open_index(int index, mac_handle_t *mhp, mac_client_handle_t *mcip,
cred_t *cred)
{
mac_client_handle_t mch;
zoneid_t ifzoneid;
mac_handle_t mh;
zoneid_t zoneid;
int error;
mh = 0;
mch = 0;
error = mac_open_by_linkid(index, &mh);
if (error != 0)
goto bad_open;
error = mac_client_open(mh, &mch, NULL,
MAC_OPEN_FLAGS_USE_DATALINK_NAME);
if (error != 0)
goto bad_open;
zoneid = crgetzoneid(cred);
if (zoneid != GLOBAL_ZONEID) {
mac_perim_handle_t perim;
mac_perim_enter_by_mh(mh, &perim);
error = dls_link_getzid(mac_client_name(mch), &ifzoneid);
mac_perim_exit(perim);
if (error != 0)
goto bad_open;
if (ifzoneid != zoneid) {
error = EACCES;
goto bad_open;
}
}
*mcip = mch;
*mhp = mh;
return (0);
bad_open:
if (mch != 0)
mac_client_close(mch, 0);
if (mh != 0)
mac_close(mh);
return (error);
}
static int
dld_capab_perim(dld_str_t *dsp, void *data, uint_t flags)
{
switch (flags) {
case DLD_ENABLE:
mac_perim_enter_by_mh(dsp->ds_mh, (mac_perim_handle_t *)data);
return (0);
case DLD_DISABLE:
mac_perim_exit((mac_perim_handle_t)data);
return (0);
case DLD_QUERY:
return (mac_perim_held(dsp->ds_mh));
}
return (0);
}
/*
* DL_SET_PHYS_ADDR_REQ
*/
static void
proto_setphysaddr_req(dld_str_t *dsp, mblk_t *mp)
{
dl_set_phys_addr_req_t *dlp = (dl_set_phys_addr_req_t *)mp->b_rptr;
int err = 0;
t_uscalar_t dl_err;
queue_t *q = dsp->ds_wq;
mac_perim_handle_t mph;
if (dsp->ds_dlstate == DL_UNATTACHED ||
DL_ACK_PENDING(dsp->ds_dlstate)) {
dl_err = DL_OUTSTATE;
goto failed;
}
if (MBLKL(mp) < sizeof (dl_set_phys_addr_req_t) ||
!MBLKIN(mp, dlp->dl_addr_offset, dlp->dl_addr_length) ||
dlp->dl_addr_length != dsp->ds_mip->mi_addr_length) {
dl_err = DL_BADPRIM;
goto failed;
}
mac_perim_enter_by_mh(dsp->ds_mh, &mph);
if ((err = dls_active_set(dsp)) != 0) {
dl_err = DL_SYSERR;
goto failed2;
}
/*
* If mac-nospoof is enabled and the link is owned by a
* non-global zone, changing the mac address is not allowed.
*/
if (dsp->ds_dlp->dl_zid != GLOBAL_ZONEID &&
mac_protect_enabled(dsp->ds_mch, MPT_MACNOSPOOF)) {
dls_active_clear(dsp, B_FALSE);
err = EACCES;
goto failed2;
}
err = mac_unicast_primary_set(dsp->ds_mh,
mp->b_rptr + dlp->dl_addr_offset);
if (err != 0) {
switch (err) {
case EINVAL:
dl_err = DL_BADADDR;
err = 0;
break;
default:
dl_err = DL_SYSERR;
break;
}
dls_active_clear(dsp, B_FALSE);
goto failed2;
}
mac_perim_exit(mph);
dlokack(q, mp, DL_SET_PHYS_ADDR_REQ);
return;
failed2:
mac_perim_exit(mph);
failed:
dlerrorack(q, mp, DL_SET_PHYS_ADDR_REQ, dl_err, (t_uscalar_t)err);
}
/*
* DL_PROMISCOFF_REQ
*/
static void
proto_promiscoff_req(dld_str_t *dsp, mblk_t *mp)
{
dl_promiscoff_req_t *dlp = (dl_promiscoff_req_t *)mp->b_rptr;
int err = 0;
t_uscalar_t dl_err;
uint32_t promisc_saved;
queue_t *q = dsp->ds_wq;
mac_perim_handle_t mph;
if (MBLKL(mp) < sizeof (dl_promiscoff_req_t)) {
dl_err = DL_BADPRIM;
goto failed;
}
if (dsp->ds_dlstate == DL_UNATTACHED ||
DL_ACK_PENDING(dsp->ds_dlstate)) {
dl_err = DL_OUTSTATE;
goto failed;
}
promisc_saved = dsp->ds_promisc;
switch (dlp->dl_level) {
case DL_PROMISC_SAP:
if (!(dsp->ds_promisc & DLS_PROMISC_SAP)) {
dl_err = DL_NOTENAB;
goto failed;
}
dsp->ds_promisc &= ~DLS_PROMISC_SAP;
break;
case DL_PROMISC_MULTI:
if (!(dsp->ds_promisc & DLS_PROMISC_MULTI)) {
dl_err = DL_NOTENAB;
goto failed;
}
dsp->ds_promisc &= ~DLS_PROMISC_MULTI;
break;
case DL_PROMISC_PHYS:
if (!(dsp->ds_promisc & DLS_PROMISC_PHYS)) {
dl_err = DL_NOTENAB;
goto failed;
}
dsp->ds_promisc &= ~DLS_PROMISC_PHYS;
break;
default:
dl_err = DL_NOTSUPPORTED;
goto failed;
}
mac_perim_enter_by_mh(dsp->ds_mh, &mph);
/*
* Adjust channel promiscuity.
*/
err = dls_promisc(dsp, promisc_saved);
if (err != 0) {
mac_perim_exit(mph);
dl_err = DL_SYSERR;
goto failed;
}
if (dsp->ds_promisc == 0)
dls_active_clear(dsp, B_FALSE);
mac_perim_exit(mph);
dlokack(q, mp, DL_PROMISCOFF_REQ);
return;
failed:
dlerrorack(q, mp, DL_PROMISCOFF_REQ, dl_err, (t_uscalar_t)err);
}
/*
* DL_BIND_REQ
*/
static void
proto_bind_req(dld_str_t *dsp, mblk_t *mp)
{
dl_bind_req_t *dlp = (dl_bind_req_t *)mp->b_rptr;
int err = 0;
uint8_t dlsap_addr[MAXMACADDRLEN + sizeof (uint16_t)];
uint_t dlsap_addr_length;
t_uscalar_t dl_err;
t_scalar_t sap;
queue_t *q = dsp->ds_wq;
mac_perim_handle_t mph;
void *mdip;
int32_t intr_cpu;
if (MBLKL(mp) < sizeof (dl_bind_req_t)) {
dl_err = DL_BADPRIM;
goto failed;
}
if (dlp->dl_xidtest_flg != 0) {
dl_err = DL_NOAUTO;
goto failed;
}
if (dlp->dl_service_mode != DL_CLDLS) {
dl_err = DL_UNSUPPORTED;
goto failed;
}
if (dsp->ds_dlstate != DL_UNBOUND) {
dl_err = DL_OUTSTATE;
goto failed;
}
mac_perim_enter_by_mh(dsp->ds_mh, &mph);
if ((err = dls_active_set(dsp)) != 0) {
dl_err = DL_SYSERR;
goto failed2;
}
dsp->ds_dlstate = DL_BIND_PENDING;
/*
* Set the receive callback.
*/
dls_rx_set(dsp, (dsp->ds_mode == DLD_RAW) ?
dld_str_rx_raw : dld_str_rx_unitdata, dsp);
/*
* Bind the channel such that it can receive packets.
*/
sap = dlp->dl_sap;
dsp->ds_nonip = !check_mod_above(dsp->ds_rq, "ip") &&
!check_mod_above(dsp->ds_rq, "arp");
err = dls_bind(dsp, sap);
if (err != 0) {
switch (err) {
case EINVAL:
dl_err = DL_BADADDR;
err = 0;
break;
default:
dl_err = DL_SYSERR;
break;
}
dsp->ds_dlstate = DL_UNBOUND;
dls_active_clear(dsp, B_FALSE);
goto failed2;
}
intr_cpu = mac_client_intr_cpu(dsp->ds_mch);
mdip = mac_get_devinfo(dsp->ds_mh);
mac_perim_exit(mph);
/*
* We do this after we get out of the perim to avoid deadlocks
* etc. since part of mac_client_retarget_intr is to walk the
* device tree in order to find and retarget the interrupts.
*/
if (intr_cpu != -1)
mac_client_set_intr_cpu(mdip, dsp->ds_mch, intr_cpu);
/*
* Copy in MAC address.
*/
dlsap_addr_length = dsp->ds_mip->mi_addr_length;
mac_unicast_primary_get(dsp->ds_mh, dlsap_addr);
/*
* Copy in the SAP.
*/
*(uint16_t *)(dlsap_addr + dlsap_addr_length) = sap;
dlsap_addr_length += sizeof (uint16_t);
dsp->ds_dlstate = DL_IDLE;
dlbindack(q, mp, sap, dlsap_addr, dlsap_addr_length, 0, 0);
return;
failed2:
mac_perim_exit(mph);
failed:
dlerrorack(q, mp, DL_BIND_REQ, dl_err, (t_uscalar_t)err);
}