/* Intel(R) Ethernet Connection E800 Series Linux Driver */
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <generated/utsrelease.h> #include <linux/crash_dump.h> #include"ice.h" #include"ice_base.h" #include"ice_lib.h" #include"ice_fltr.h" #include"ice_dcb_lib.h" #include"ice_dcb_nl.h" #include"devlink/devlink.h" #include"devlink/port.h" #include"ice_sf_eth.h" #include"ice_hwmon.h" /* Including ice_trace.h with CREATE_TRACE_POINTS defined will generate the * ice tracepoint functions. This must be done exactly once across the * ice driver.
*/ #define CREATE_TRACE_POINTS #include"ice_trace.h" #include"ice_eswitch.h" #include"ice_tc_lib.h" #include"ice_vsi_vlan_ops.h" #include <net/xdp_sock_drv.h>
/** * ice_hw_to_dev - Get device pointer from the hardware structure * @hw: pointer to the device HW structure * * Used to access the device pointer from compilation units which can't easily * include the definition of struct ice_pf without leading to circular header * dependencies.
*/ struct device *ice_hw_to_dev(struct ice_hw *hw)
{ struct ice_pf *pf = container_of(hw, struct ice_pf, hw);
/** * ice_get_tx_pending - returns number of Tx descriptors not processed * @ring: the ring of descriptors
*/ static u16 ice_get_tx_pending(struct ice_tx_ring *ring)
{
u16 head, tail;
head = ring->next_to_clean;
tail = ring->next_to_use;
if (!tx_ring) continue; if (ice_ring_ch_enabled(tx_ring)) continue;
ring_stats = tx_ring->ring_stats; if (!ring_stats) continue;
if (tx_ring->desc) { /* If packet counter has not changed the queue is * likely stalled, so force an interrupt for this * queue. * * prev_pkt would be negative if there was no * pending work.
*/
packets = ring_stats->stats.pkts & INT_MAX; if (ring_stats->tx_stats.prev_pkt == packets) { /* Trigger sw interrupt to revive the queue */
ice_trigger_sw_intr(hw, tx_ring->q_vector); continue;
}
/* Memory barrier between read of packet count and call * to ice_get_tx_pending()
*/
smp_rmb();
ring_stats->tx_stats.prev_pkt =
ice_get_tx_pending(tx_ring) ? packets : -1;
}
}
}
/** * ice_init_mac_fltr - Set initial MAC filters * @pf: board private structure * * Set initial set of MAC filters for PF VSI; configure filters for permanent * address and broadcast address. If an error is encountered, netdevice will be * unregistered.
*/ staticint ice_init_mac_fltr(struct ice_pf *pf)
{ struct ice_vsi *vsi;
u8 *perm_addr;
vsi = ice_get_main_vsi(pf); if (!vsi) return -EINVAL;
/** * ice_add_mac_to_sync_list - creates list of MAC addresses to be synced * @netdev: the net device on which the sync is happening * @addr: MAC address to sync * * This is a callback function which is called by the in kernel device sync * functions (like __dev_uc_sync, __dev_mc_sync, etc). This function only * populates the tmp_sync_list, which is later used by ice_add_mac to add the * MAC filters from the hardware.
*/ staticint ice_add_mac_to_sync_list(struct net_device *netdev, const u8 *addr)
{ struct ice_netdev_priv *np = netdev_priv(netdev); struct ice_vsi *vsi = np->vsi;
if (ice_fltr_add_mac_to_list(vsi, &vsi->tmp_sync_list, addr,
ICE_FWD_TO_VSI)) return -EINVAL;
return 0;
}
/** * ice_add_mac_to_unsync_list - creates list of MAC addresses to be unsynced * @netdev: the net device on which the unsync is happening * @addr: MAC address to unsync * * This is a callback function which is called by the in kernel device unsync * functions (like __dev_uc_unsync, __dev_mc_unsync, etc). This function only * populates the tmp_unsync_list, which is later used by ice_remove_mac to * delete the MAC filters from the hardware.
*/ staticint ice_add_mac_to_unsync_list(struct net_device *netdev, const u8 *addr)
{ struct ice_netdev_priv *np = netdev_priv(netdev); struct ice_vsi *vsi = np->vsi;
/* Under some circumstances, we might receive a request to delete our * own device address from our uc list. Because we store the device * address in the VSI's MAC filter list, we need to ignore such * requests and not delete our device address from this list.
*/ if (ether_addr_equal(addr, netdev->dev_addr)) return 0;
if (ice_fltr_add_mac_to_list(vsi, &vsi->tmp_unsync_list, addr,
ICE_FWD_TO_VSI)) return -EINVAL;
return 0;
}
/** * ice_vsi_fltr_changed - check if filter state changed * @vsi: VSI to be checked * * returns true if filter state has changed, false otherwise.
*/ staticbool ice_vsi_fltr_changed(struct ice_vsi *vsi)
{ return test_bit(ICE_VSI_UMAC_FLTR_CHANGED, vsi->state) ||
test_bit(ICE_VSI_MMAC_FLTR_CHANGED, vsi->state);
}
/** * ice_set_promisc - Enable promiscuous mode for a given PF * @vsi: the VSI being configured * @promisc_m: mask of promiscuous config bits *
*/ staticint ice_set_promisc(struct ice_vsi *vsi, u8 promisc_m)
{ int status;
if (vsi->type != ICE_VSI_PF) return 0;
if (ice_vsi_has_non_zero_vlans(vsi)) {
promisc_m |= (ICE_PROMISC_VLAN_RX | ICE_PROMISC_VLAN_TX);
status = ice_fltr_set_vlan_vsi_promisc(&vsi->back->hw, vsi,
promisc_m);
} else {
status = ice_fltr_set_vsi_promisc(&vsi->back->hw, vsi->idx,
promisc_m, 0);
} if (status && status != -EEXIST) return status;
netdev_dbg(vsi->netdev, "set promisc filter bits for VSI %i: 0x%x\n",
vsi->vsi_num, promisc_m); return 0;
}
/** * ice_clear_promisc - Disable promiscuous mode for a given PF * @vsi: the VSI being configured * @promisc_m: mask of promiscuous config bits *
*/ staticint ice_clear_promisc(struct ice_vsi *vsi, u8 promisc_m)
{ int status;
if (vsi->type != ICE_VSI_PF) return 0;
if (ice_vsi_has_non_zero_vlans(vsi)) {
promisc_m |= (ICE_PROMISC_VLAN_RX | ICE_PROMISC_VLAN_TX);
status = ice_fltr_clear_vlan_vsi_promisc(&vsi->back->hw, vsi,
promisc_m);
} else {
status = ice_fltr_clear_vsi_promisc(&vsi->back->hw, vsi->idx,
promisc_m, 0);
}
netdev_dbg(vsi->netdev, "clear promisc filter bits for VSI %i: 0x%x\n",
vsi->vsi_num, promisc_m); return status;
}
/** * ice_vsi_sync_fltr - Update the VSI filter list to the HW * @vsi: ptr to the VSI * * Push any outstanding VSI filter changes through the AdminQ.
*/ staticint ice_vsi_sync_fltr(struct ice_vsi *vsi)
{ struct ice_vsi_vlan_ops *vlan_ops = ice_get_compat_vsi_vlan_ops(vsi); struct device *dev = ice_pf_to_dev(vsi->back); struct net_device *netdev = vsi->netdev; bool promisc_forced_on = false; struct ice_pf *pf = vsi->back; struct ice_hw *hw = &pf->hw;
u32 changed_flags = 0; int err;
if (!vsi->netdev) return -EINVAL;
while (test_and_set_bit(ICE_CFG_BUSY, vsi->state))
usleep_range(1000, 2000);
/* Remove MAC addresses in the unsync list */
err = ice_fltr_remove_mac_list(vsi, &vsi->tmp_unsync_list);
ice_fltr_free_list(dev, &vsi->tmp_unsync_list); if (err) {
netdev_err(netdev, "Failed to delete MAC filters\n"); /* if we failed because of alloc failures, just bail */ if (err == -ENOMEM) goto out;
}
/* Add MAC addresses in the sync list */
err = ice_fltr_add_mac_list(vsi, &vsi->tmp_sync_list);
ice_fltr_free_list(dev, &vsi->tmp_sync_list); /* If filter is added successfully or already exists, do not go into * 'if' condition and report it as error. Instead continue processing * rest of the function.
*/ if (err && err != -EEXIST) {
netdev_err(netdev, "Failed to add MAC filters\n"); /* If there is no more space for new umac filters, VSI * should go into promiscuous mode. There should be some * space reserved for promiscuous filters.
*/ if (hw->adminq.sq_last_status == LIBIE_AQ_RC_ENOSPC &&
!test_and_set_bit(ICE_FLTR_OVERFLOW_PROMISC,
vsi->state)) {
promisc_forced_on = true;
netdev_warn(netdev, "Reached MAC filter limit, forcing promisc mode on VSI %d\n",
vsi->vsi_num);
} else { goto out;
}
}
err = 0; /* check for changes in promiscuous modes */ if (changed_flags & IFF_ALLMULTI) { if (vsi->current_netdev_flags & IFF_ALLMULTI) {
err = ice_set_promisc(vsi, ICE_MCAST_PROMISC_BITS); if (err) {
vsi->current_netdev_flags &= ~IFF_ALLMULTI; goto out_promisc;
}
} else { /* !(vsi->current_netdev_flags & IFF_ALLMULTI) */
err = ice_clear_promisc(vsi, ICE_MCAST_PROMISC_BITS); if (err) {
vsi->current_netdev_flags |= IFF_ALLMULTI; goto out_promisc;
}
}
}
if (((changed_flags & IFF_PROMISC) || promisc_forced_on) ||
test_bit(ICE_VSI_PROMISC_CHANGED, vsi->state)) {
clear_bit(ICE_VSI_PROMISC_CHANGED, vsi->state); if (vsi->current_netdev_flags & IFF_PROMISC) { /* Apply Rx filter rule to get traffic from wire */ if (!ice_is_dflt_vsi_in_use(vsi->port_info)) {
err = ice_set_dflt_vsi(vsi); if (err && err != -EEXIST) {
netdev_err(netdev, "Error %d setting default VSI %i Rx rule\n",
err, vsi->vsi_num);
vsi->current_netdev_flags &=
~IFF_PROMISC; goto out_promisc;
}
err = 0;
vlan_ops->dis_rx_filtering(vsi);
/* promiscuous mode implies allmulticast so * that VSIs that are in promiscuous mode are * subscribed to multicast packets coming to * the port
*/
err = ice_set_promisc(vsi,
ICE_MCAST_PROMISC_BITS); if (err) goto out_promisc;
}
} else { /* Clear Rx filter to remove traffic from wire */ if (ice_is_vsi_dflt_vsi(vsi)) {
err = ice_clear_dflt_vsi(vsi); if (err) {
netdev_err(netdev, "Error %d clearing default VSI %i Rx rule\n",
err, vsi->vsi_num);
vsi->current_netdev_flags |=
IFF_PROMISC; goto out_promisc;
} if (vsi->netdev->features &
NETIF_F_HW_VLAN_CTAG_FILTER)
vlan_ops->ena_rx_filtering(vsi);
}
/* disable allmulti here, but only if allmulti is not * still enabled for the netdev
*/ if (!(vsi->current_netdev_flags & IFF_ALLMULTI)) {
err = ice_clear_promisc(vsi,
ICE_MCAST_PROMISC_BITS); if (err) {
netdev_err(netdev, "Error %d clearing multicast promiscuous on VSI %i\n",
err, vsi->vsi_num);
}
}
}
} gotoexit;
out_promisc:
set_bit(ICE_VSI_PROMISC_CHANGED, vsi->state); gotoexit;
out: /* if something went wrong then set the changed flag so we try again */
set_bit(ICE_VSI_UMAC_FLTR_CHANGED, vsi->state);
set_bit(ICE_VSI_MMAC_FLTR_CHANGED, vsi->state); exit:
clear_bit(ICE_CFG_BUSY, vsi->state); return err;
}
/** * ice_sync_fltr_subtask - Sync the VSI filter list with HW * @pf: board private structure
*/ staticvoid ice_sync_fltr_subtask(struct ice_pf *pf)
{ int v;
if (!pf || !(test_bit(ICE_FLAG_FLTR_SYNC, pf->flags))) return;
clear_bit(ICE_FLAG_FLTR_SYNC, pf->flags);
ice_for_each_vsi(pf, v) if (pf->vsi[v] && ice_vsi_fltr_changed(pf->vsi[v]) &&
ice_vsi_sync_fltr(pf->vsi[v])) { /* come back and try again later */
set_bit(ICE_FLAG_FLTR_SYNC, pf->flags); break;
}
}
/** * ice_pf_dis_all_vsi - Pause all VSIs on a PF * @pf: the PF * @locked: is the rtnl_lock already held
*/ staticvoid ice_pf_dis_all_vsi(struct ice_pf *pf, bool locked)
{ int node; int v;
ice_for_each_vsi(pf, v) if (pf->vsi[v])
ice_dis_vsi(pf->vsi[v], locked);
/* already prepared for reset */ if (test_bit(ICE_PREPARED_FOR_RESET, pf->state)) return;
synchronize_irq(pf->oicr_irq.virq);
ice_unplug_aux_dev(pf);
/* Notify VFs of impending reset */ if (ice_check_sq_alive(hw, &hw->mailboxq))
ice_vc_notify_reset(pf);
/* Disable VFs until reset is completed */
mutex_lock(&pf->vfs.table_lock);
ice_for_each_vf(pf, bkt, vf)
ice_set_vf_state_dis(vf);
mutex_unlock(&pf->vfs.table_lock);
if (ice_is_eswitch_mode_switchdev(pf)) {
rtnl_lock();
ice_eswitch_br_fdb_flush(pf->eswitch.br_offloads->bridge);
rtnl_unlock();
}
/* release ADQ specific HW and SW resources */
vsi = ice_get_main_vsi(pf); if (!vsi) goto skip;
/* to be on safe side, reset orig_rss_size so that normal flow * of deciding rss_size can take precedence
*/
vsi->orig_rss_size = 0;
if (test_bit(ICE_FLAG_TC_MQPRIO, pf->flags)) { if (reset_type == ICE_RESET_PFR) {
vsi->old_ena_tc = vsi->all_enatc;
vsi->old_numtc = vsi->all_numtc;
} else {
ice_remove_q_channels(vsi, true);
/* for other reset type, do not support channel rebuild * hence reset needed info
*/
vsi->old_ena_tc = 0;
vsi->all_enatc = 0;
vsi->old_numtc = 0;
vsi->all_numtc = 0;
vsi->req_txq = 0;
vsi->req_rxq = 0;
clear_bit(ICE_FLAG_TC_MQPRIO, pf->flags);
memset(&vsi->mqprio_qopt, 0, sizeof(vsi->mqprio_qopt));
}
}
if (vsi->netdev)
netif_device_detach(vsi->netdev);
skip:
/* clear SW filtering DB */
ice_clear_hw_tbls(hw); /* disable the VSIs and their queues that are not already DOWN */
set_bit(ICE_VSI_REBUILD_PENDING, ice_get_main_vsi(pf)->state);
ice_pf_dis_all_vsi(pf, false);
if (test_bit(ICE_FLAG_PTP_SUPPORTED, pf->flags))
ice_ptp_prepare_for_reset(pf, reset_type);
if (ice_is_feature_supported(pf, ICE_F_GNSS))
ice_gnss_exit(pf);
if (hw->port_info)
ice_sched_clear_port(hw->port_info);
ice_shutdown_all_ctrlq(hw, false);
set_bit(ICE_PREPARED_FOR_RESET, pf->state);
}
/** * ice_do_reset - Initiate one of many types of resets * @pf: board private structure * @reset_type: reset type requested before this function was called.
*/ staticvoid ice_do_reset(struct ice_pf *pf, enum ice_reset_req reset_type)
{ struct device *dev = ice_pf_to_dev(pf); struct ice_hw *hw = &pf->hw;
/* PFR is a bit of a special case because it doesn't result in an OICR * interrupt. So for PFR, rebuild after the reset and clear the reset- * associated state bits.
*/ if (reset_type == ICE_RESET_PFR) {
pf->pfr_count++;
ice_rebuild(pf, reset_type);
clear_bit(ICE_PREPARED_FOR_RESET, pf->state);
clear_bit(ICE_PFR_REQ, pf->state);
wake_up(&pf->reset_wait_queue);
ice_reset_all_vfs(pf);
}
}
/** * ice_reset_subtask - Set up for resetting the device and driver * @pf: board private structure
*/ staticvoid ice_reset_subtask(struct ice_pf *pf)
{ enum ice_reset_req reset_type = ICE_RESET_INVAL;
/* When a CORER/GLOBR/EMPR is about to happen, the hardware triggers an * OICR interrupt. The OICR handler (ice_misc_intr) determines what type * of reset is pending and sets bits in pf->state indicating the reset * type and ICE_RESET_OICR_RECV. So, if the latter bit is set * prepare for pending reset if not already (for PF software-initiated * global resets the software should already be prepared for it as * indicated by ICE_PREPARED_FOR_RESET; for global resets initiated * by firmware or software on other PFs, that bit is not set so prepare * for the reset now), poll for reset done, rebuild and return.
*/ if (test_bit(ICE_RESET_OICR_RECV, pf->state)) { /* Perform the largest reset requested */ if (test_and_clear_bit(ICE_CORER_RECV, pf->state))
reset_type = ICE_RESET_CORER; if (test_and_clear_bit(ICE_GLOBR_RECV, pf->state))
reset_type = ICE_RESET_GLOBR; if (test_and_clear_bit(ICE_EMPR_RECV, pf->state))
reset_type = ICE_RESET_EMPR; /* return if no valid reset type requested */ if (reset_type == ICE_RESET_INVAL) return;
ice_prepare_for_reset(pf, reset_type);
/* make sure we are ready to rebuild */ if (ice_check_reset(&pf->hw)) {
set_bit(ICE_RESET_FAILED, pf->state);
} else { /* done with reset. start rebuild */
pf->hw.reset_ongoing = false;
ice_rebuild(pf, reset_type); /* clear bit to resume normal operations, but * ICE_NEEDS_RESTART bit is set in case rebuild failed
*/
clear_bit(ICE_RESET_OICR_RECV, pf->state);
clear_bit(ICE_PREPARED_FOR_RESET, pf->state);
clear_bit(ICE_PFR_REQ, pf->state);
clear_bit(ICE_CORER_REQ, pf->state);
clear_bit(ICE_GLOBR_REQ, pf->state);
wake_up(&pf->reset_wait_queue);
ice_reset_all_vfs(pf);
}
return;
}
/* No pending resets to finish processing. Check for new resets */ if (test_bit(ICE_PFR_REQ, pf->state)) {
reset_type = ICE_RESET_PFR; if (pf->lag && pf->lag->bonded) {
dev_dbg(ice_pf_to_dev(pf), "PFR on a bonded interface, promoting to CORER\n");
reset_type = ICE_RESET_CORER;
}
} if (test_bit(ICE_CORER_REQ, pf->state))
reset_type = ICE_RESET_CORER; if (test_bit(ICE_GLOBR_REQ, pf->state))
reset_type = ICE_RESET_GLOBR; /* If no valid reset type requested just return */ if (reset_type == ICE_RESET_INVAL) return;
/* reset if not already down or busy */ if (!test_bit(ICE_DOWN, pf->state) &&
!test_bit(ICE_CFG_BUSY, pf->state)) {
ice_do_reset(pf, reset_type);
}
}
/** * ice_print_topo_conflict - print topology conflict message * @vsi: the VSI whose topology status is being checked
*/ staticvoid ice_print_topo_conflict(struct ice_vsi *vsi)
{ switch (vsi->port_info->phy.link_info.topo_media_conflict) { case ICE_AQ_LINK_TOPO_CONFLICT: case ICE_AQ_LINK_MEDIA_CONFLICT: case ICE_AQ_LINK_TOPO_UNREACH_PRT: case ICE_AQ_LINK_TOPO_UNDRUTIL_PRT: case ICE_AQ_LINK_TOPO_UNDRUTIL_MEDIA:
netdev_info(vsi->netdev, "Potential misconfiguration of the Ethernet port detected. If it was not intended, please use the Intel (R) Ethernet Port Configuration Tool to address the issue.\n"); break; case ICE_AQ_LINK_TOPO_UNSUPP_MEDIA: if (test_bit(ICE_FLAG_LINK_LENIENT_MODE_ENA, vsi->back->flags))
netdev_warn(vsi->netdev, "An unsupported module type was detected. Refer to the Intel(R) Ethernet Adapters and Devices User Guide for a list of supported modules\n"); else
netdev_err(vsi->netdev, "Rx/Tx is disabled on this device because an unsupported module type was detected. Refer to the Intel(R) Ethernet Adapters and Devices User Guide for a list of supported modules.\n"); break; default: break;
}
}
/** * ice_print_link_msg - print link up or down message * @vsi: the VSI whose link status is being queried * @isup: boolean for if the link is now up or down
*/ void ice_print_link_msg(struct ice_vsi *vsi, bool isup)
{ struct ice_aqc_get_phy_caps_data *caps; constchar *an_advertised; constchar *fec_req; constchar *speed; constchar *fec; constchar *fc; constchar *an; int status;
if (!vsi) return;
if (vsi->current_isup == isup) return;
vsi->current_isup = isup;
if (!isup) {
netdev_info(vsi->netdev, "NIC Link is Down\n"); return;
}
switch (vsi->port_info->phy.link_info.link_speed) { case ICE_AQ_LINK_SPEED_200GB:
speed = "200 G"; break; case ICE_AQ_LINK_SPEED_100GB:
speed = "100 G"; break; case ICE_AQ_LINK_SPEED_50GB:
speed = "50 G"; break; case ICE_AQ_LINK_SPEED_40GB:
speed = "40 G"; break; case ICE_AQ_LINK_SPEED_25GB:
speed = "25 G"; break; case ICE_AQ_LINK_SPEED_20GB:
speed = "20 G"; break; case ICE_AQ_LINK_SPEED_10GB:
speed = "10 G"; break; case ICE_AQ_LINK_SPEED_5GB:
speed = "5 G"; break; case ICE_AQ_LINK_SPEED_2500MB:
speed = "2.5 G"; break; case ICE_AQ_LINK_SPEED_1000MB:
speed = "1 G"; break; case ICE_AQ_LINK_SPEED_100MB:
speed = "100 M"; break; default:
speed = "Unknown "; break;
}
switch (vsi->port_info->fc.current_mode) { case ICE_FC_FULL:
fc = "Rx/Tx"; break; case ICE_FC_TX_PAUSE:
fc = "Tx"; break; case ICE_FC_RX_PAUSE:
fc = "Rx"; break; case ICE_FC_NONE:
fc = "None"; break; default:
fc = "Unknown"; break;
}
/* Get FEC mode based on negotiated link info */ switch (vsi->port_info->phy.link_info.fec_info) { case ICE_AQ_LINK_25G_RS_528_FEC_EN: case ICE_AQ_LINK_25G_RS_544_FEC_EN:
fec = "RS-FEC"; break; case ICE_AQ_LINK_25G_KR_FEC_EN:
fec = "FC-FEC/BASE-R"; break; default:
fec = "NONE"; break;
}
/* check if autoneg completed, might be false due to not supported */ if (vsi->port_info->phy.link_info.an_info & ICE_AQ_AN_COMPLETED)
an = "True"; else
an = "False";
/* Get FEC mode requested based on PHY caps last SW configuration */
caps = kzalloc(sizeof(*caps), GFP_KERNEL); if (!caps) {
fec_req = "Unknown";
an_advertised = "Unknown"; goto done;
}
status = ice_aq_get_phy_caps(vsi->port_info, false,
ICE_AQC_REPORT_ACTIVE_CFG, caps, NULL); if (status)
netdev_info(vsi->netdev, "Get phy capability failed.\n");
done:
netdev_info(vsi->netdev, "NIC Link is up %sbps Full Duplex, Requested FEC: %s, Negotiated FEC: %s, Autoneg Advertised: %s, Autoneg Negotiated: %s, Flow Control: %s\n",
speed, fec_req, fec, an_advertised, an, fc);
ice_print_topo_conflict(vsi);
}
/** * ice_vsi_link_event - update the VSI's netdev * @vsi: the VSI on which the link event occurred * @link_up: whether or not the VSI needs to be set up or down
*/ staticvoid ice_vsi_link_event(struct ice_vsi *vsi, bool link_up)
{ if (!vsi) return;
if (test_bit(ICE_VSI_DOWN, vsi->state) || !vsi->netdev) return;
if (vsi->type == ICE_VSI_PF) { if (link_up == netif_carrier_ok(vsi->netdev)) return;
/** * ice_set_dflt_mib - send a default config MIB to the FW * @pf: private PF struct * * This function sends a default configuration MIB to the FW. * * If this function errors out at any point, the driver is still able to * function. The main impact is that LFC may not operate as expected. * Therefore an error state in this function should be treated with a DBG * message and continue on with driver rebuild/reenable.
*/ staticvoid ice_set_dflt_mib(struct ice_pf *pf)
{ struct device *dev = ice_pf_to_dev(pf);
u8 mib_type, *buf, *lldpmib = NULL;
u16 len, typelen, offset = 0; struct ice_lldp_org_tlv *tlv; struct ice_hw *hw = &pf->hw;
u32 ouisubtype;
mib_type = SET_LOCAL_MIB_TYPE_LOCAL_MIB;
lldpmib = kzalloc(ICE_LLDPDU_SIZE, GFP_KERNEL); if (!lldpmib) {
dev_dbg(dev, "%s Failed to allocate MIB memory\n",
__func__); return;
}
/* First octet of buf is reserved * Octets 1 - 4 map UP to TC - all UPs map to zero * Octets 5 - 12 are BW values - set TC 0 to 100%. * Octets 13 - 20 are TSA value - leave as zeros
*/
buf[5] = 0x64;
offset += len + 2;
tlv = (struct ice_lldp_org_tlv *)
((char *)tlv + sizeof(tlv->typelen) + len);
/* Octet 1 left as all zeros - PFC disabled */
buf[0] = 0x08;
len = FIELD_GET(ICE_LLDP_TLV_LEN_M, typelen);
offset += len + 2;
if (ice_aq_set_lldp_mib(hw, mib_type, (void *)lldpmib, offset, NULL))
dev_dbg(dev, "%s Failed to set default LLDP MIB\n", __func__);
kfree(lldpmib);
}
/** * ice_check_phy_fw_load - check if PHY FW load failed * @pf: pointer to PF struct * @link_cfg_err: bitmap from the link info structure * * check if external PHY FW load failed and print an error message if it did
*/ staticvoid ice_check_phy_fw_load(struct ice_pf *pf, u8 link_cfg_err)
{ if (!(link_cfg_err & ICE_AQ_LINK_EXTERNAL_PHY_LOAD_FAILURE)) {
clear_bit(ICE_FLAG_PHY_FW_LOAD_FAILED, pf->flags); return;
}
if (test_bit(ICE_FLAG_PHY_FW_LOAD_FAILED, pf->flags)) return;
if (link_cfg_err & ICE_AQ_LINK_EXTERNAL_PHY_LOAD_FAILURE) {
dev_err(ice_pf_to_dev(pf), "Device failed to load the FW for the external PHY. Please download and install the latest NVM for your device and try again\n");
set_bit(ICE_FLAG_PHY_FW_LOAD_FAILED, pf->flags);
}
}
/** * ice_check_module_power * @pf: pointer to PF struct * @link_cfg_err: bitmap from the link info structure * * check module power level returned by a previous call to aq_get_link_info * and print error messages if module power level is not supported
*/ staticvoid ice_check_module_power(struct ice_pf *pf, u8 link_cfg_err)
{ /* if module power level is supported, clear the flag */ if (!(link_cfg_err & (ICE_AQ_LINK_INVAL_MAX_POWER_LIMIT |
ICE_AQ_LINK_MODULE_POWER_UNSUPPORTED))) {
clear_bit(ICE_FLAG_MOD_POWER_UNSUPPORTED, pf->flags); return;
}
/* if ICE_FLAG_MOD_POWER_UNSUPPORTED was previously set and the * above block didn't clear this bit, there's nothing to do
*/ if (test_bit(ICE_FLAG_MOD_POWER_UNSUPPORTED, pf->flags)) return;
if (link_cfg_err & ICE_AQ_LINK_INVAL_MAX_POWER_LIMIT) {
dev_err(ice_pf_to_dev(pf), "The installed module is incompatible with the device's NVM image. Cannot start link\n");
set_bit(ICE_FLAG_MOD_POWER_UNSUPPORTED, pf->flags);
} elseif (link_cfg_err & ICE_AQ_LINK_MODULE_POWER_UNSUPPORTED) {
dev_err(ice_pf_to_dev(pf), "The module's power requirements exceed the device's power supply. Cannot start link\n");
set_bit(ICE_FLAG_MOD_POWER_UNSUPPORTED, pf->flags);
}
}
/** * ice_check_link_cfg_err - check if link configuration failed * @pf: pointer to the PF struct * @link_cfg_err: bitmap from the link info structure * * print if any link configuration failure happens due to the value in the * link_cfg_err parameter in the link info structure
*/ staticvoid ice_check_link_cfg_err(struct ice_pf *pf, u8 link_cfg_err)
{
ice_check_module_power(pf, link_cfg_err);
ice_check_phy_fw_load(pf, link_cfg_err);
}
/** * ice_link_event - process the link event * @pf: PF that the link event is associated with * @pi: port_info for the port that the link event is associated with * @link_up: true if the physical link is up and false if it is down * @link_speed: current link speed received from the link event * * Returns 0 on success and negative on failure
*/ staticint
ice_link_event(struct ice_pf *pf, struct ice_port_info *pi, bool link_up,
u16 link_speed)
{ struct device *dev = ice_pf_to_dev(pf); struct ice_phy_info *phy_info; struct ice_vsi *vsi;
u16 old_link_speed; bool old_link; int status;
/* update the link info structures and re-enable link events, * don't bail on failure due to other book keeping needed
*/
status = ice_update_link_info(pi); if (status)
dev_dbg(dev, "Failed to update link status on port %d, err %d aq_err %s\n",
pi->lport, status,
libie_aq_str(pi->hw->adminq.sq_last_status));
/* Check if the link state is up after updating link info, and treat * this event as an UP event since the link is actually UP now.
*/ if (phy_info->link_info.link_info & ICE_AQ_LINK_UP)
link_up = true;
vsi = ice_get_main_vsi(pf); if (!vsi || !vsi->port_info) return -EINVAL;
/* turn off PHY if media was removed */ if (!test_bit(ICE_FLAG_NO_MEDIA, pf->flags) &&
!(pi->phy.link_info.link_info & ICE_AQ_MEDIA_AVAILABLE)) {
set_bit(ICE_FLAG_NO_MEDIA, pf->flags);
ice_set_link(vsi, false);
}
/* if the old link up/down and speed is the same as the new */ if (link_up == old_link && link_speed == old_link_speed) return 0;
if (!link_up && old_link)
pf->link_down_events++;
ice_ptp_link_change(pf, link_up);
if (ice_is_dcb_active(pf)) { if (test_bit(ICE_FLAG_DCB_ENA, pf->flags))
ice_dcb_rebuild(pf);
} else { if (link_up)
ice_set_dflt_mib(pf);
}
ice_vsi_link_event(vsi, link_up);
ice_print_link_msg(vsi, link_up);
ice_vc_notify_link_state(pf);
return 0;
}
/** * ice_watchdog_subtask - periodic tasks not using event driven scheduling * @pf: board private structure
*/ staticvoid ice_watchdog_subtask(struct ice_pf *pf)
{ int i;
/* if interface is down do nothing */ if (test_bit(ICE_DOWN, pf->state) ||
test_bit(ICE_CFG_BUSY, pf->state)) return;
/* make sure we don't do these things too often */ if (time_before(jiffies,
pf->serv_tmr_prev + pf->serv_tmr_period)) return;
pf->serv_tmr_prev = jiffies;
/* Update the stats for active netdevs so the network stack * can look at updated numbers whenever it cares to
*/
ice_update_pf_stats(pf);
ice_for_each_vsi(pf, i) if (pf->vsi[i] && pf->vsi[i]->netdev)
ice_update_vsi_stats(pf->vsi[i]);
}
/** * ice_init_link_events - enable/initialize link events * @pi: pointer to the port_info instance * * Returns -EIO on failure, 0 on success
*/ staticint ice_init_link_events(struct ice_port_info *pi)
{
u16 mask;
if (ice_aq_set_event_mask(pi->hw, pi->lport, mask, NULL)) {
dev_dbg(ice_hw_to_dev(pi->hw), "Failed to set link event mask for port %d\n",
pi->lport); return -EIO;
}
if (ice_aq_get_link_info(pi, true, NULL, NULL)) {
dev_dbg(ice_hw_to_dev(pi->hw), "Failed to enable link events for port %d\n",
pi->lport); return -EIO;
}
return 0;
}
/** * ice_handle_link_event - handle link event via ARQ * @pf: PF that the link event is associated with * @event: event structure containing link status info
*/ staticint
ice_handle_link_event(struct ice_pf *pf, struct ice_rq_event_info *event)
{ struct ice_aqc_get_link_status_data *link_data; struct ice_port_info *port_info; int status;
status = ice_link_event(pf, port_info,
!!(link_data->link_info & ICE_AQ_LINK_UP),
le16_to_cpu(link_data->link_speed)); if (status)
dev_dbg(ice_pf_to_dev(pf), "Could not process link event, error %d\n",
status);
return status;
}
/** * ice_get_fwlog_data - copy the FW log data from ARQ event * @pf: PF that the FW log event is associated with * @event: event structure containing FW log data
*/ staticvoid
ice_get_fwlog_data(struct ice_pf *pf, struct ice_rq_event_info *event)
{ struct ice_fwlog_data *fwlog; struct ice_hw *hw = &pf->hw;
if (ice_fwlog_ring_full(&hw->fwlog_ring)) { /* the rings are full so bump the head to create room */
ice_fwlog_ring_increment(&hw->fwlog_ring.head,
hw->fwlog_ring.size);
}
}
/** * ice_aq_prep_for_event - Prepare to wait for an AdminQ event from firmware * @pf: pointer to the PF private structure * @task: intermediate helper storage and identifier for waiting * @opcode: the opcode to wait for * * Prepares to wait for a specific AdminQ completion event on the ARQ for * a given PF. Actual wait would be done by a call to ice_aq_wait_for_event(). * * Calls are separated to allow caller registering for event before sending * the command, which mitigates a race between registering and FW responding. * * To obtain only the descriptor contents, pass an task->event with null * msg_buf. If the complete data buffer is desired, allocate the * task->event.msg_buf with enough space ahead of time.
*/ void ice_aq_prep_for_event(struct ice_pf *pf, struct ice_aq_task *task,
u16 opcode)
{
INIT_HLIST_NODE(&task->entry);
task->opcode = opcode;
task->state = ICE_AQ_TASK_WAITING;
/** * ice_aq_wait_for_event - Wait for an AdminQ event from firmware * @pf: pointer to the PF private structure * @task: ptr prepared by ice_aq_prep_for_event() * @timeout: how long to wait, in jiffies * * Waits for a specific AdminQ completion event on the ARQ for a given PF. The * current thread will be put to sleep until the specified event occurs or * until the given timeout is reached. * * Returns: zero on success, or a negative error code on failure.
*/ int ice_aq_wait_for_event(struct ice_pf *pf, struct ice_aq_task *task, unsignedlong timeout)
{ enum ice_aq_task_state *state = &task->state; struct device *dev = ice_pf_to_dev(pf); unsignedlong start = jiffies; long ret; int err;
ret = wait_event_interruptible_timeout(pf->aq_wait_queue,
*state != ICE_AQ_TASK_WAITING,
timeout); switch (*state) { case ICE_AQ_TASK_NOT_PREPARED:
WARN(1, "call to %s without ice_aq_prep_for_event()", __func__);
err = -EINVAL; break; case ICE_AQ_TASK_WAITING:
err = ret < 0 ? ret : -ETIMEDOUT; break; case ICE_AQ_TASK_CANCELED:
err = ret < 0 ? ret : -ECANCELED; break; case ICE_AQ_TASK_COMPLETE:
err = ret < 0 ? ret : 0; break; default:
WARN(1, "Unexpected AdminQ wait task state %u", *state);
err = -EINVAL; break;
}
dev_dbg(dev, "Waited %u msecs (max %u msecs) for firmware response to op 0x%04x\n",
jiffies_to_msecs(jiffies - start),
jiffies_to_msecs(timeout),
task->opcode);
/** * ice_aq_check_events - Check if any thread is waiting for an AdminQ event * @pf: pointer to the PF private structure * @opcode: the opcode of the event * @event: the event to check * * Loops over the current list of pending threads waiting for an AdminQ event. * For each matching task, copy the contents of the event into the task * structure and wake up the thread. * * If multiple threads wait for the same opcode, they will all be woken up. * * Note that event->msg_buf will only be duplicated if the event has a buffer * with enough space already allocated. Otherwise, only the descriptor and * message length will be copied. * * Returns: true if an event was found, false otherwise
*/ staticvoid ice_aq_check_events(struct ice_pf *pf, u16 opcode, struct ice_rq_event_info *event)
{ struct ice_rq_event_info *task_ev; struct ice_aq_task *task; bool found = false;
spin_lock_bh(&pf->aq_wait_lock);
hlist_for_each_entry(task, &pf->aq_wait_list, entry) { if (task->state != ICE_AQ_TASK_WAITING) continue; if (task->opcode != opcode) continue;
/* Only copy the data buffer if a destination was set */ if (task_ev->msg_buf && task_ev->buf_len >= event->buf_len) {
memcpy(task_ev->msg_buf, event->msg_buf,
event->buf_len);
task_ev->buf_len = event->buf_len;
}
task->state = ICE_AQ_TASK_COMPLETE;
found = true;
}
spin_unlock_bh(&pf->aq_wait_lock);
if (found)
wake_up(&pf->aq_wait_queue);
}
/** * ice_aq_cancel_waiting_tasks - Immediately cancel all waiting tasks * @pf: the PF private structure * * Set all waiting tasks to ICE_AQ_TASK_CANCELED, and wake up their threads. * This will then cause ice_aq_wait_for_event to exit with -ECANCELED.
*/ staticvoid ice_aq_cancel_waiting_tasks(struct ice_pf *pf)
{ struct ice_aq_task *task;
/** * __ice_clean_ctrlq - helper function to clean controlq rings * @pf: ptr to struct ice_pf * @q_type: specific Control queue type
*/ staticint __ice_clean_ctrlq(struct ice_pf *pf, enum ice_ctl_q q_type)
{ struct device *dev = ice_pf_to_dev(pf); struct ice_rq_event_info event; struct ice_hw *hw = &pf->hw; struct ice_ctl_q_info *cq;
u16 pending, i = 0; constchar *qtype;
u32 oldval, val;
/* Do not clean control queue if/when PF reset fails */ if (test_bit(ICE_RESET_FAILED, pf->state)) return 0;
switch (q_type) { case ICE_CTL_Q_ADMIN:
cq = &hw->adminq;
qtype = "Admin"; break; case ICE_CTL_Q_SB:
cq = &hw->sbq;
qtype = "Sideband"; break; case ICE_CTL_Q_MAILBOX:
cq = &hw->mailboxq;
qtype = "Mailbox"; /* we are going to try to detect a malicious VF, so set the * state to begin detection
*/
hw->mbx_snapshot.mbx_buf.state = ICE_MAL_VF_DETECT_STATE_NEW_SNAPSHOT; break; default:
dev_warn(dev, "Unknown control queue type 0x%x\n", q_type); return 0;
}
/* check for error indications - PF_xx_AxQLEN register layout for * FW/MBX/SB are identical so just use defines for PF_FW_AxQLEN.
*/
val = rd32(hw, cq->rq.len); if (val & (PF_FW_ARQLEN_ARQVFE_M | PF_FW_ARQLEN_ARQOVFL_M |
PF_FW_ARQLEN_ARQCRIT_M)) {
oldval = val; if (val & PF_FW_ARQLEN_ARQVFE_M)
dev_dbg(dev, "%s Receive Queue VF Error detected\n",
qtype); if (val & PF_FW_ARQLEN_ARQOVFL_M) {
dev_dbg(dev, "%s Receive Queue Overflow Error detected\n",
qtype);
} if (val & PF_FW_ARQLEN_ARQCRIT_M)
dev_dbg(dev, "%s Receive Queue Critical Error detected\n",
qtype);
val &= ~(PF_FW_ARQLEN_ARQVFE_M | PF_FW_ARQLEN_ARQOVFL_M |
PF_FW_ARQLEN_ARQCRIT_M); if (oldval != val)
wr32(hw, cq->rq.len, val);
}
val = rd32(hw, cq->sq.len); if (val & (PF_FW_ATQLEN_ATQVFE_M | PF_FW_ATQLEN_ATQOVFL_M |
PF_FW_ATQLEN_ATQCRIT_M)) {
oldval = val; if (val & PF_FW_ATQLEN_ATQVFE_M)
dev_dbg(dev, "%s Send Queue VF Error detected\n",
qtype); if (val & PF_FW_ATQLEN_ATQOVFL_M) {
dev_dbg(dev, "%s Send Queue Overflow Error detected\n",
qtype);
} if (val & PF_FW_ATQLEN_ATQCRIT_M)
dev_dbg(dev, "%s Send Queue Critical Error detected\n",
qtype);
val &= ~(PF_FW_ATQLEN_ATQVFE_M | PF_FW_ATQLEN_ATQOVFL_M |
PF_FW_ATQLEN_ATQCRIT_M); if (oldval != val)
wr32(hw, cq->sq.len, val);
}
do { struct ice_mbx_data data = {};
u16 opcode; int ret;
ret = ice_clean_rq_elem(hw, cq, &event, &pending); if (ret == -EALREADY) break; if (ret) {
dev_err(dev, "%s Receive Queue event error %d\n", qtype,
ret); break;
}
opcode = le16_to_cpu(event.desc.opcode);
/* Notify any thread that might be waiting for this event */
ice_aq_check_events(pf, opcode, &event);
switch (opcode) { case ice_aqc_opc_get_link_status: if (ice_handle_link_event(pf, &event))
dev_err(dev, "Could not handle link event\n"); break; case ice_aqc_opc_event_lan_overflow:
ice_vf_lan_overflow_event(pf, &event); break; case ice_mbx_opc_send_msg_to_pf: if (ice_is_feature_supported(pf, ICE_F_MBX_LIMIT)) {
ice_vc_process_vf_msg(pf, &event, NULL);
ice_mbx_vf_dec_trig_e830(hw, &event);
} else {
u16 val = hw->mailboxq.num_rq_entries;
ice_vc_process_vf_msg(pf, &event, &data);
} break; case ice_aqc_opc_fw_logs_event:
ice_get_fwlog_data(pf, &event); break; case ice_aqc_opc_lldp_set_mib_change:
ice_dcb_process_lldp_set_mib_change(pf, &event); break; case ice_aqc_opc_get_health_status:
ice_process_health_status_event(pf, &event); break; default:
dev_dbg(dev, "%s Receive Queue unknown event 0x%04x ignored\n",
qtype, opcode); break;
}
} while (pending && (i++ < ICE_DFLT_IRQ_WORK));
kfree(event.msg_buf);
return pending && (i == ICE_DFLT_IRQ_WORK);
}
/** * ice_ctrlq_pending - check if there is a difference between ntc and ntu * @hw: pointer to hardware info * @cq: control queue information * * returns true if there are pending messages in a queue, false if there aren't
*/ staticbool ice_ctrlq_pending(struct ice_hw *hw, struct ice_ctl_q_info *cq)
{
u16 ntu;
if (!test_bit(ICE_ADMINQ_EVENT_PENDING, pf->state)) return;
if (__ice_clean_ctrlq(pf, ICE_CTL_Q_ADMIN)) return;
clear_bit(ICE_ADMINQ_EVENT_PENDING, pf->state);
/* There might be a situation where new messages arrive to a control * queue between processing the last message and clearing the * EVENT_PENDING bit. So before exiting, check queue head again (using * ice_ctrlq_pending) and process new messages if any.
*/ if (ice_ctrlq_pending(hw, &hw->adminq))
__ice_clean_ctrlq(pf, ICE_CTL_Q_ADMIN);
/* if mac_type is not generic, sideband is not supported * and there's nothing to do here
*/ if (!ice_is_generic_mac(hw)) {
clear_bit(ICE_SIDEBANDQ_EVENT_PENDING, pf->state); return;
}
if (!test_bit(ICE_SIDEBANDQ_EVENT_PENDING, pf->state)) return;
if (ice_ctrlq_pending(hw, &hw->sbq))
__ice_clean_ctrlq(pf, ICE_CTL_Q_SB);
ice_flush(hw);
}
/** * ice_service_task_schedule - schedule the service task to wake up * @pf: board private structure * * If not already scheduled, this puts the task into the work queue.
*/ void ice_service_task_schedule(struct ice_pf *pf)
{ if (!test_bit(ICE_SERVICE_DIS, pf->state) &&
!test_and_set_bit(ICE_SERVICE_SCHED, pf->state) &&
!test_bit(ICE_NEEDS_RESTART, pf->state))
queue_work(ice_wq, &pf->serv_task);
}
/** * ice_service_task_complete - finish up the service task * @pf: board private structure
*/ staticvoid ice_service_task_complete(struct ice_pf *pf)
{
WARN_ON(!test_bit(ICE_SERVICE_SCHED, pf->state));
/* force memory (pf->state) to sync before next service task */
smp_mb__before_atomic();
clear_bit(ICE_SERVICE_SCHED, pf->state);
}
/** * ice_service_task_stop - stop service task and cancel works * @pf: board private structure * * Return 0 if the ICE_SERVICE_DIS bit was not already set, * 1 otherwise.
*/ staticint ice_service_task_stop(struct ice_pf *pf)
{ int ret;
ret = test_and_set_bit(ICE_SERVICE_DIS, pf->state);
if (pf->serv_tmr.function)
timer_delete_sync(&pf->serv_tmr); if (pf->serv_task.func)
cancel_work_sync(&pf->serv_task);
/** * ice_service_task_restart - restart service task and schedule works * @pf: board private structure * * This function is needed for suspend and resume works (e.g WoL scenario)
*/ staticvoid ice_service_task_restart(struct ice_pf *pf)
{
clear_bit(ICE_SERVICE_DIS, pf->state);
ice_service_task_schedule(pf);
}
/** * ice_service_timer - timer callback to schedule service task * @t: pointer to timer_list
*/ staticvoid ice_service_timer(struct timer_list *t)
{ struct ice_pf *pf = timer_container_of(pf, t, serv_tmr);
/** * ice_mdd_maybe_reset_vf - reset VF after MDD event * @pf: pointer to the PF structure * @vf: pointer to the VF structure * @reset_vf_tx: whether Tx MDD has occurred * @reset_vf_rx: whether Rx MDD has occurred * * Since the queue can get stuck on VF MDD events, the PF can be configured to * automatically reset the VF by enabling the private ethtool flag * mdd-auto-reset-vf.
*/ staticvoid ice_mdd_maybe_reset_vf(struct ice_pf *pf, struct ice_vf *vf, bool reset_vf_tx, bool reset_vf_rx)
{ struct device *dev = ice_pf_to_dev(pf);
if (!test_bit(ICE_FLAG_MDD_AUTO_RESET_VF, pf->flags)) return;
/* VF MDD event counters will be cleared by reset, so print the event * prior to reset.
*/ if (reset_vf_tx)
ice_print_vf_tx_mdd_event(vf);
if (reset_vf_rx)
ice_print_vf_rx_mdd_event(vf);
dev_info(dev, "PF-to-VF reset on PF %d VF %d due to MDD event\n",
pf->hw.pf_id, vf->vf_id);
ice_reset_vf(vf, ICE_VF_RESET_NOTIFY | ICE_VF_RESET_LOCK);
}
/** * ice_handle_mdd_event - handle malicious driver detect event * @pf: pointer to the PF structure * * Called from service task. OICR interrupt handler indicates MDD event. * VF MDD logging is guarded by net_ratelimit. Additional PF and VF log * messages are wrapped by netif_msg_[rx|tx]_err. Since VF Rx MDD events * disable the queue, the PF can be configured to reset the VF using ethtool * private flag mdd-auto-reset-vf.
*/ staticvoid ice_handle_mdd_event(struct ice_pf *pf)
{ struct device *dev = ice_pf_to_dev(pf); struct ice_hw *hw = &pf->hw; struct ice_vf *vf; unsignedint bkt;
u32 reg;
if (!test_and_clear_bit(ICE_MDD_EVENT_PENDING, pf->state)) { /* Since the VF MDD event logging is rate limited, check if * there are pending MDD events.
*/
ice_print_vfs_mdd_events(pf); return;
}
/* check to see if this PF caused an MDD event */
reg = rd32(hw, PF_MDET_TX_PQM); if (reg & PF_MDET_TX_PQM_VALID_M) {
wr32(hw, PF_MDET_TX_PQM, 0xFFFF); if (netif_msg_tx_err(pf))
dev_info(dev, "Malicious Driver Detection event TX_PQM detected on PF\n");
}
reg = rd32(hw, PF_MDET_TX_TCLAN_BY_MAC(hw)); if (reg & PF_MDET_TX_TCLAN_VALID_M) {
wr32(hw, PF_MDET_TX_TCLAN_BY_MAC(hw), 0xffff); if (netif_msg_tx_err(pf))
dev_info(dev, "Malicious Driver Detection event TX_TCLAN detected on PF\n");
}
reg = rd32(hw, PF_MDET_RX); if (reg & PF_MDET_RX_VALID_M) {
wr32(hw, PF_MDET_RX, 0xFFFF); if (netif_msg_rx_err(pf))
dev_info(dev, "Malicious Driver Detection event RX detected on PF\n");
}
/* Check to see if one of the VFs caused an MDD event, and then * increment counters and set print pending
*/
mutex_lock(&pf->vfs.table_lock);
ice_for_each_vf(pf, bkt, vf) { bool reset_vf_tx = false, reset_vf_rx = false;
reg = rd32(hw, VP_MDET_TX_PQM(vf->vf_id)); if (reg & VP_MDET_TX_PQM_VALID_M) {
wr32(hw, VP_MDET_TX_PQM(vf->vf_id), 0xFFFF);
vf->mdd_tx_events.count++;
set_bit(ICE_MDD_VF_PRINT_PENDING, pf->state); if (netif_msg_tx_err(pf))
dev_info(dev, "Malicious Driver Detection event TX_PQM detected on VF %d\n",
vf->vf_id);
reset_vf_tx = true;
}
reg = rd32(hw, VP_MDET_TX_TCLAN(vf->vf_id)); if (reg & VP_MDET_TX_TCLAN_VALID_M) {
wr32(hw, VP_MDET_TX_TCLAN(vf->vf_id), 0xFFFF);
vf->mdd_tx_events.count++;
set_bit(ICE_MDD_VF_PRINT_PENDING, pf->state); if (netif_msg_tx_err(pf))
dev_info(dev, "Malicious Driver Detection event TX_TCLAN detected on VF %d\n",
vf->vf_id);
reset_vf_tx = true;
}
reg = rd32(hw, VP_MDET_TX_TDPU(vf->vf_id)); if (reg & VP_MDET_TX_TDPU_VALID_M) {
wr32(hw, VP_MDET_TX_TDPU(vf->vf_id), 0xFFFF);
vf->mdd_tx_events.count++;
set_bit(ICE_MDD_VF_PRINT_PENDING, pf->state); if (netif_msg_tx_err(pf))
dev_info(dev, "Malicious Driver Detection event TX_TDPU detected on VF %d\n",
vf->vf_id);
reset_vf_tx = true;
}
reg = rd32(hw, VP_MDET_RX(vf->vf_id)); if (reg & VP_MDET_RX_VALID_M) {
wr32(hw, VP_MDET_RX(vf->vf_id), 0xFFFF);
vf->mdd_rx_events.count++;
set_bit(ICE_MDD_VF_PRINT_PENDING, pf->state); if (netif_msg_rx_err(pf))
dev_info(dev, "Malicious Driver Detection event RX detected on VF %d\n",
vf->vf_id);
reset_vf_rx = true;
}
if (reset_vf_tx || reset_vf_rx)
ice_mdd_maybe_reset_vf(pf, vf, reset_vf_tx,
reset_vf_rx);
}
mutex_unlock(&pf->vfs.table_lock);
ice_print_vfs_mdd_events(pf);
}
/** * ice_force_phys_link_state - Force the physical link state * @vsi: VSI to force the physical link state to up/down * @link_up: true/false indicates to set the physical link to up/down * * Force the physical link state by getting the current PHY capabilities from * hardware and setting the PHY config based on the determined capabilities. If * link changes a link event will be triggered because both the Enable Automatic * Link Update and LESM Enable bits are set when setting the PHY capabilities. * * Returns 0 on success, negative on failure
*/ staticint ice_force_phys_link_state(struct ice_vsi *vsi, bool link_up)
{ struct ice_aqc_get_phy_caps_data *pcaps; struct ice_aqc_set_phy_cfg_data *cfg; struct ice_port_info *pi; struct device *dev; int retcode;
if (!vsi || !vsi->port_info || !vsi->back) return -EINVAL; if (vsi->type != ICE_VSI_PF) return 0;
dev = ice_pf_to_dev(vsi->back);
pi = vsi->port_info;
pcaps = kzalloc(sizeof(*pcaps), GFP_KERNEL); if (!pcaps) return -ENOMEM;
retcode = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_ACTIVE_CFG, pcaps,
NULL); if (retcode) {
dev_err(dev, "Failed to get phy capabilities, VSI %d error %d\n",
vsi->vsi_num, retcode);
retcode = -EIO; goto out;
}
/* No change in link */ if (link_up == !!(pcaps->caps & ICE_AQC_PHY_EN_LINK) &&
link_up == !!(pi->phy.link_info.link_info & ICE_AQ_LINK_UP)) goto out;
/* Use the current user PHY configuration. The current user PHY * configuration is initialized during probe from PHY capabilities * software mode, and updated on set PHY configuration.
*/
cfg = kmemdup(&pi->phy.curr_user_phy_cfg, sizeof(*cfg), GFP_KERNEL); if (!cfg) {
retcode = -ENOMEM; goto out;
}
retcode = ice_aq_set_phy_cfg(&vsi->back->hw, pi, cfg, NULL); if (retcode) {
dev_err(dev, "Failed to set phy config, VSI %d error %d\n",
vsi->vsi_num, retcode);
retcode = -EIO;
}
kfree(cfg);
out:
kfree(pcaps); return retcode;
}
/** * ice_init_nvm_phy_type - Initialize the NVM PHY type * @pi: port info structure * * Initialize nvm_phy_type_[low|high] for link lenient mode support
*/ staticint ice_init_nvm_phy_type(struct ice_port_info *pi)
{ struct ice_aqc_get_phy_caps_data *pcaps; struct ice_pf *pf = pi->hw->back; int err;
pcaps = kzalloc(sizeof(*pcaps), GFP_KERNEL); if (!pcaps) return -ENOMEM;
/** * ice_init_link_dflt_override - Initialize link default override * @pi: port info structure * * Initialize link default override and PHY total port shutdown during probe
*/ staticvoid ice_init_link_dflt_override(struct ice_port_info *pi)
{ struct ice_link_default_override_tlv *ldo; struct ice_pf *pf = pi->hw->back;
ldo = &pf->link_dflt_override; if (ice_get_link_default_override(ldo, pi)) return;
if (!(ldo->options & ICE_LINK_OVERRIDE_PORT_DIS)) return;
/* Enable Total Port Shutdown (override/replace link-down-on-close * ethtool private flag) for ports with Port Disable bit set.
*/
set_bit(ICE_FLAG_TOTAL_PORT_SHUTDOWN_ENA, pf->flags);
set_bit(ICE_FLAG_LINK_DOWN_ON_CLOSE_ENA, pf->flags);
}
/** * ice_init_phy_cfg_dflt_override - Initialize PHY cfg default override settings * @pi: port info structure * * If default override is enabled, initialize the user PHY cfg speed and FEC * settings using the default override mask from the NVM. * * The PHY should only be configured with the default override settings the * first time media is available. The ICE_LINK_DEFAULT_OVERRIDE_PENDING state * is used to indicate that the user PHY cfg default override is initialized * and the PHY has not been configured with the default override settings. The * state is set here, and cleared in ice_configure_phy the first time the PHY is * configured. * * This function should be called only if the FW doesn't support default * configuration mode, as reported by ice_fw_supports_report_dflt_cfg.
*/ staticvoid ice_init_phy_cfg_dflt_override(struct ice_port_info *pi)
{ struct ice_link_default_override_tlv *ldo; struct ice_aqc_set_phy_cfg_data *cfg; struct ice_phy_info *phy = &pi->phy; struct ice_pf *pf = pi->hw->back;
ldo = &pf->link_dflt_override;
/* If link default override is enabled, use to mask NVM PHY capabilities * for speed and FEC default configuration.
*/
cfg = &phy->curr_user_phy_cfg;
/** * ice_init_phy_user_cfg - Initialize the PHY user configuration * @pi: port info structure * * Initialize the current user PHY configuration, speed, FEC, and FC requested * mode to default. The PHY defaults are from get PHY capabilities topology * with media so call when media is first available. An error is returned if * called when media is not available. The PHY initialization completed state is * set here. * * These configurations are used when setting PHY * configuration. The user PHY configuration is updated on set PHY * configuration. Returns 0 on success, negative on failure
*/ staticint ice_init_phy_user_cfg(struct ice_port_info *pi)
{ struct ice_aqc_get_phy_caps_data *pcaps; struct ice_phy_info *phy = &pi->phy; struct ice_pf *pf = pi->hw->back; int err;
if (!(phy->link_info.link_info & ICE_AQ_MEDIA_AVAILABLE)) return -EIO;
pcaps = kzalloc(sizeof(*pcaps), GFP_KERNEL); if (!pcaps) return -ENOMEM;
/* check if lenient mode is supported and enabled */ if (ice_fw_supports_link_override(pi->hw) &&
!(pcaps->module_compliance_enforcement &
ICE_AQC_MOD_ENFORCE_STRICT_MODE)) {
set_bit(ICE_FLAG_LINK_LENIENT_MODE_ENA, pf->flags);
/* if the FW supports default PHY configuration mode, then the driver * does not have to apply link override settings. If not, * initialize user PHY configuration with link override values
*/ if (!ice_fw_supports_report_dflt_cfg(pi->hw) &&
(pf->link_dflt_override.options & ICE_LINK_OVERRIDE_EN)) {
ice_init_phy_cfg_dflt_override(pi); goto out;
}
}
/* if link default override is not enabled, set user flow control and * FEC settings based on what get_phy_caps returned
*/
phy->curr_user_fec_req = ice_caps_to_fec_mode(pcaps->caps,
pcaps->link_fec_options);
phy->curr_user_fc_req = ice_caps_to_fc_mode(pcaps->caps);
/** * ice_configure_phy - configure PHY * @vsi: VSI of PHY * * Set the PHY configuration. If the current PHY configuration is the same as * the curr_user_phy_cfg, then do nothing to avoid link flap. Otherwise * configure the based get PHY capabilities for topology with media.
*/ staticint ice_configure_phy(struct ice_vsi *vsi)
{ struct device *dev = ice_pf_to_dev(vsi->back); struct ice_port_info *pi = vsi->port_info; struct ice_aqc_get_phy_caps_data *pcaps; struct ice_aqc_set_phy_cfg_data *cfg; struct ice_phy_info *phy = &pi->phy; struct ice_pf *pf = vsi->back; int err;
/* Ensure we have media as we cannot configure a medialess port */ if (!(phy->link_info.link_info & ICE_AQ_MEDIA_AVAILABLE)) return -ENOMEDIUM;
ice_print_topo_conflict(vsi);
if (!test_bit(ICE_FLAG_LINK_LENIENT_MODE_ENA, pf->flags) &&
phy->link_info.topo_media_conflict == ICE_AQ_LINK_TOPO_UNSUPP_MEDIA) return -EPERM;
if (test_bit(ICE_FLAG_LINK_DOWN_ON_CLOSE_ENA, pf->flags)) return ice_force_phys_link_state(vsi, true);
pcaps = kzalloc(sizeof(*pcaps), GFP_KERNEL); if (!pcaps) return -ENOMEM;
/* Get current PHY config */
err = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_ACTIVE_CFG, pcaps,
NULL); if (err) {
dev_err(dev, "Failed to get PHY configuration, VSI %d error %d\n",
vsi->vsi_num, err); goto done;
}
/* If PHY enable link is configured and configuration has not changed, * there's nothing to do
*/ if (pcaps->caps & ICE_AQC_PHY_EN_LINK &&
ice_phy_caps_equals_cfg(pcaps, &phy->curr_user_phy_cfg)) goto done;
/* Use PHY topology as baseline for configuration */
memset(pcaps, 0, sizeof(*pcaps)); if (ice_fw_supports_report_dflt_cfg(pi->hw))
err = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_DFLT_CFG,
pcaps, NULL); else
err = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_TOPO_CAP_MEDIA,
pcaps, NULL); if (err) {
dev_err(dev, "Failed to get PHY caps, VSI %d error %d\n",
vsi->vsi_num, err); goto done;
}
/* Speed - If default override pending, use curr_user_phy_cfg set in * ice_init_phy_user_cfg_ldo.
*/ if (test_and_clear_bit(ICE_LINK_DEFAULT_OVERRIDE_PENDING,
vsi->back->state)) {
cfg->phy_type_low = phy->curr_user_phy_cfg.phy_type_low;
--> --------------------
--> maximum size reached
--> --------------------
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