/* we shouldn't be updating rules on a disabled interface */ if (!FM10K_VF_FLAG_ENABLED(vf_info))
err = FM10K_ERR_PARAM;
if (!err && !!results[FM10K_MAC_VLAN_MSG_VLAN]) {
result = results[FM10K_MAC_VLAN_MSG_VLAN];
/* record VLAN id requested */
err = fm10k_tlv_attr_get_u32(result, &vid); if (err) return err;
set = !(vid & FM10K_VLAN_CLEAR);
vid &= ~FM10K_VLAN_CLEAR;
/* if the length field has been set, this is a multi-bit *updaterequest.Formulti-bitrequests,simplydisallow *themwhenthepf_vidhasbeenset.Inthiscase,thePF *shouldhavealreadyclearedtheVLAN_TABLE,andifwe *allowedthem,itcouldallowarogueVFtoreceivetraffic *onaVLANitwasnotassigned.Inthesingle-bitcase,we *needtomodifyrequestsforVLAN0tousethedefaultPFor *SWvidwhenassigned.
*/
if (vid >> 16) { /* prevent multi-bit requests when PF has *administrativelysettheVLANforthisVF
*/ if (vf_info->pf_vid) return FM10K_ERR_PARAM;
} else {
err = fm10k_iov_select_vid(vf_info, (u16)vid); if (err < 0) return err;
vid = err;
}
/* update VSI info for VF in regards to VLAN table */
err = hw->mac.ops.update_vlan(hw, vid, vf_info->vsi, set);
}
if (!err && !!results[FM10K_MAC_VLAN_MSG_MAC]) {
result = results[FM10K_MAC_VLAN_MSG_MAC];
/* record unicast MAC address requested */
err = fm10k_tlv_attr_get_mac_vlan(result, mac, &vlan); if (err) return err;
/* block attempts to set MAC for a locked device */ if (is_valid_ether_addr(vf_info->mac) &&
!ether_addr_equal(mac, vf_info->mac)) return FM10K_ERR_PARAM;
set = !(vlan & FM10K_VLAN_CLEAR);
vlan &= ~FM10K_VLAN_CLEAR;
err = fm10k_iov_select_vid(vf_info, vlan); if (err < 0) return err;
vlan = (u16)err;
/* Add this request to the MAC/VLAN queue */
err = fm10k_queue_mac_request(interface, vf_info->glort,
mac, vlan, set);
}
if (!err && !!results[FM10K_MAC_VLAN_MSG_MULTICAST]) {
result = results[FM10K_MAC_VLAN_MSG_MULTICAST];
/* record multicast MAC address requested */
err = fm10k_tlv_attr_get_mac_vlan(result, mac, &vlan); if (err) return err;
/* verify that the VF is allowed to request multicast */ if (!(vf_info->vf_flags & FM10K_VF_FLAG_MULTI_ENABLED)) return FM10K_ERR_PARAM;
set = !(vlan & FM10K_VLAN_CLEAR);
vlan &= ~FM10K_VLAN_CLEAR;
err = fm10k_iov_select_vid(vf_info, vlan); if (err < 0) return err;
vlan = (u16)err;
/* Add this request to the MAC/VLAN queue */
err = fm10k_queue_mac_request(interface, vf_info->glort,
mac, vlan, set);
}
/* if there is no iov_data then there is no mailbox to process */ if (!READ_ONCE(interface->iov_data)) return0;
rcu_read_lock();
iov_data = interface->iov_data;
/* check again now that we are in the RCU block */ if (!iov_data) goto read_unlock;
if (!(fm10k_read_reg(hw, FM10K_EICR) & FM10K_EICR_VFLR)) goto read_unlock;
/* read VFLRE to determine if any VFs have been reset */
vflre = fm10k_read_reg(hw, FM10K_PFVFLRE(1));
vflre <<= 32;
vflre |= fm10k_read_reg(hw, FM10K_PFVFLRE(0));
/* if there is no iov_data then there is no mailbox to process */ if (!READ_ONCE(interface->iov_data)) return0;
rcu_read_lock();
iov_data = interface->iov_data;
/* check again now that we are in the RCU block */ if (!iov_data) goto read_unlock;
/* lock the mailbox for transmit and receive */
fm10k_mbx_lock(interface);
/* Most VF messages sent to the PF cause the PF to respond by *requestingfromtheSMmailbox.ThismeansthattoomanyVF *messagesprocessedatoncecouldcauseamailboxtimeoutonthePF. *Topreventthis,storeapointertothenextVFmbxtoprocess.Use *thatasthestartoftheloopsothatwedon'tstarvewhicheverVF *gotignoredonthepreviousrun.
*/
process_mbx: for (i = iov_data->next_vf_mbx ? : iov_data->num_vfs; i--;) { struct fm10k_vf_info *vf_info = &iov_data->vf_info[i]; struct fm10k_mbx_info *mbx = &vf_info->mbx;
u16 glort = vf_info->glort;
/* process the SM mailbox first to drain outgoing messages */
hw->mbx.ops.process(hw, &hw->mbx);
/* verify port mapping is valid, if not reset port */ if (vf_info->vf_flags && !fm10k_glort_valid_pf(hw, glort)) {
hw->iov.ops.reset_lport(hw, vf_info);
fm10k_clear_macvlan_queue(interface, glort, false);
}
/* reset VFs that have mailbox timed out */ if (!mbx->timeout) {
hw->iov.ops.reset_resources(hw, vf_info);
mbx->ops.connect(hw, mbx);
}
/* guarantee we have free space in the SM mailbox */ if (hw->mbx.state == FM10K_STATE_OPEN &&
!hw->mbx.ops.tx_ready(&hw->mbx, FM10K_VFMBX_MSG_MTU)) { /* keep track of how many times this occurs */
interface->hw_sm_mbx_full++;
/* make sure we try again momentarily */
fm10k_service_event_schedule(interface);
break;
}
/* cleanup mailbox and process received messages */
mbx->ops.process(hw, mbx);
}
/* if we stopped processing mailboxes early, update next_vf_mbx. *Otherwise,resetnext_vf_mbx,andrestartloopsothatweprocess *theremainingmailboxesweskippedatthestart.
*/ if (i >= 0) {
iov_data->next_vf_mbx = i + 1;
} elseif (iov_data->next_vf_mbx) {
iov_data->next_vf_mbx = 0; goto process_mbx;
}
/* no IOV support, not our message to process */ if (!iov_data) return FM10K_ERR_PARAM;
/* glort outside our range, not our message to process */ if (vf_idx >= iov_data->num_vfs) return FM10K_ERR_PARAM;
/* determine if an update has occurred and if so notify the VF */
vf_info = &iov_data->vf_info[vf_idx]; if (vf_info->sw_vid != pvid) {
vf_info->sw_vid = pvid;
hw->iov.ops.assign_default_mac_vlan(hw, vf_info);
}
/* return error if iov_data is already populated */ if (iov_data) return -EBUSY;
/* The PF should always be able to assign resources */ if (!hw->iov.ops.assign_resources) return -ENODEV;
/* nothing to do if no VFs are requested */ if (!num_vfs) return0;
/* allocate memory for VF storage */
size = offsetof(struct fm10k_iov_data, vf_info[num_vfs]);
iov_data = kzalloc(size, GFP_KERNEL); if (!iov_data) return -ENOMEM;
/* record number of VFs */
iov_data->num_vfs = num_vfs;
/* loop through vf_info structures initializing each entry */ for (i = 0; i < num_vfs; i++) { struct fm10k_vf_info *vf_info = &iov_data->vf_info[i]; int err;
/* Record VF VSI value */
vf_info->vsi = i + 1;
vf_info->vf_idx = i;
/* verify SR-IOV is active and that vf idx is valid */ if (!iov_data || vf_idx >= iov_data->num_vfs) return -EINVAL;
/* QOS is unsupported and VLAN IDs accepted range 0-4094 */ if (qos || (vid > (VLAN_VID_MASK - 1))) return -EINVAL;
/* VF VLAN Protocol part to default is unsupported */ if (vlan_proto != htons(ETH_P_8021Q)) return -EPROTONOSUPPORT;
vf_info = &iov_data->vf_info[vf_idx];
/* exit if there is nothing to do */ if (vf_info->pf_vid == vid) return0;
/* record default VLAN ID for VF */
vf_info->pf_vid = vid;
/* Clear the VLAN table for the VF */
hw->mac.ops.update_vlan(hw, FM10K_VLAN_ALL, vf_info->vsi, false);
fm10k_reset_vf_info(interface, vf_info);
return0;
}
int fm10k_ndo_set_vf_bw(struct net_device *netdev, int vf_idx, int __always_unused min_rate, int max_rate)
{ struct fm10k_intfc *interface = netdev_priv(netdev); struct fm10k_iov_data *iov_data = interface->iov_data; struct fm10k_hw *hw = &interface->hw;
/* verify SR-IOV is active and that vf idx is valid */ if (!iov_data || vf_idx >= iov_data->num_vfs) return -EINVAL;
/* rate limit cannot be less than 10Mbs or greater than link speed */ if (max_rate &&
(max_rate < FM10K_VF_TC_MIN || max_rate > FM10K_VF_TC_MAX)) return -EINVAL;
/* store values */
iov_data->vf_info[vf_idx].rate = max_rate;
Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.
Bemerkung:
Die farbliche Syntaxdarstellung und die Messung sind noch experimentell.