blob: 4d1fc48c9744b920609f9aa2f1059c60c62abeb1 [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2018, Intel Corporation. */
/* Intel(R) Ethernet Connection E800 Series Linux Driver */
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <generated/utsrelease.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 "ice_devlink.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"
#define DRV_SUMMARY "Intel(R) Ethernet Connection E800 Series Linux Driver"
static const char ice_driver_string[] = DRV_SUMMARY;
static const char ice_copyright[] = "Copyright (c) 2018, Intel Corporation.";
/* DDP Package file located in firmware search paths (e.g. /lib/firmware/) */
#define ICE_DDP_PKG_PATH "intel/ice/ddp/"
#define ICE_DDP_PKG_FILE ICE_DDP_PKG_PATH "ice.pkg"
MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
MODULE_DESCRIPTION(DRV_SUMMARY);
MODULE_LICENSE("GPL v2");
MODULE_FIRMWARE(ICE_DDP_PKG_FILE);
static int debug = -1;
module_param(debug, int, 0644);
#ifndef CONFIG_DYNAMIC_DEBUG
MODULE_PARM_DESC(debug, "netif level (0=none,...,16=all), hw debug_mask (0x8XXXXXXX)");
#else
MODULE_PARM_DESC(debug, "netif level (0=none,...,16=all)");
#endif /* !CONFIG_DYNAMIC_DEBUG */
static DEFINE_IDA(ice_aux_ida);
DEFINE_STATIC_KEY_FALSE(ice_xdp_locking_key);
EXPORT_SYMBOL(ice_xdp_locking_key);
static struct workqueue_struct *ice_wq;
static const struct net_device_ops ice_netdev_safe_mode_ops;
static const struct net_device_ops ice_netdev_ops;
static void ice_rebuild(struct ice_pf *pf, enum ice_reset_req reset_type);
static void ice_vsi_release_all(struct ice_pf *pf);
static int ice_rebuild_channels(struct ice_pf *pf);
static void ice_remove_q_channels(struct ice_vsi *vsi, bool rem_adv_fltr);
static int
ice_indr_setup_tc_cb(struct net_device *netdev, struct Qdisc *sch,
void *cb_priv, enum tc_setup_type type, void *type_data,
void *data,
void (*cleanup)(struct flow_block_cb *block_cb));
bool netif_is_ice(struct net_device *dev)
{
return dev && (dev->netdev_ops == &ice_netdev_ops);
}
/**
* 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 (head != tail)
return (head < tail) ?
tail - head : (tail + ring->count - head);
return 0;
}
/**
* ice_check_for_hang_subtask - check for and recover hung queues
* @pf: pointer to PF struct
*/
static void ice_check_for_hang_subtask(struct ice_pf *pf)
{
struct ice_vsi *vsi = NULL;
struct ice_hw *hw;
unsigned int i;
int packets;
u32 v;
ice_for_each_vsi(pf, v)
if (pf->vsi[v] && pf->vsi[v]->type == ICE_VSI_PF) {
vsi = pf->vsi[v];
break;
}
if (!vsi || test_bit(ICE_VSI_DOWN, vsi->state))
return;
if (!(vsi->netdev && netif_carrier_ok(vsi->netdev)))
return;
hw = &vsi->back->hw;
ice_for_each_txq(vsi, i) {
struct ice_tx_ring *tx_ring = vsi->tx_rings[i];
if (!tx_ring)
continue;
if (ice_ring_ch_enabled(tx_ring))
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 = tx_ring->stats.pkts & INT_MAX;
if (tx_ring->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();
tx_ring->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.
*/
static int ice_init_mac_fltr(struct ice_pf *pf)
{
enum ice_status status;
struct ice_vsi *vsi;
u8 *perm_addr;
vsi = ice_get_main_vsi(pf);
if (!vsi)
return -EINVAL;
perm_addr = vsi->port_info->mac.perm_addr;
status = ice_fltr_add_mac_and_broadcast(vsi, perm_addr, ICE_FWD_TO_VSI);
if (status)
return -EIO;
return 0;
}
/**
* 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.
*/
static int 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.
*/
static int 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.
*/
static bool 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) ||
test_bit(ICE_VSI_VLAN_FLTR_CHANGED, vsi->state);
}
/**
* ice_cfg_promisc - Enable or disable promiscuous mode for a given PF
* @vsi: the VSI being configured
* @promisc_m: mask of promiscuous config bits
* @set_promisc: enable or disable promisc flag request
*
*/
static int ice_cfg_promisc(struct ice_vsi *vsi, u8 promisc_m, bool set_promisc)
{
struct ice_hw *hw = &vsi->back->hw;
enum ice_status status = 0;
if (vsi->type != ICE_VSI_PF)
return 0;
if (vsi->num_vlan > 1) {
status = ice_set_vlan_vsi_promisc(hw, vsi->idx, promisc_m,
set_promisc);
} else {
if (set_promisc)
status = ice_set_vsi_promisc(hw, vsi->idx, promisc_m,
0);
else
status = ice_clear_vsi_promisc(hw, vsi->idx, promisc_m,
0);
}
if (status)
return -EIO;
return 0;
}
/**
* 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.
*/
static int ice_vsi_sync_fltr(struct ice_vsi *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;
enum ice_status status = 0;
u32 changed_flags = 0;
u8 promisc_m;
int err = 0;
if (!vsi->netdev)
return -EINVAL;
while (test_and_set_bit(ICE_CFG_BUSY, vsi->state))
usleep_range(1000, 2000);
changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
vsi->current_netdev_flags = vsi->netdev->flags;
INIT_LIST_HEAD(&vsi->tmp_sync_list);
INIT_LIST_HEAD(&vsi->tmp_unsync_list);
if (ice_vsi_fltr_changed(vsi)) {
clear_bit(ICE_VSI_UMAC_FLTR_CHANGED, vsi->state);
clear_bit(ICE_VSI_MMAC_FLTR_CHANGED, vsi->state);
clear_bit(ICE_VSI_VLAN_FLTR_CHANGED, vsi->state);
/* grab the netdev's addr_list_lock */
netif_addr_lock_bh(netdev);
__dev_uc_sync(netdev, ice_add_mac_to_sync_list,
ice_add_mac_to_unsync_list);
__dev_mc_sync(netdev, ice_add_mac_to_sync_list,
ice_add_mac_to_unsync_list);
/* our temp lists are populated. release lock */
netif_addr_unlock_bh(netdev);
}
/* Remove MAC addresses in the unsync list */
status = ice_fltr_remove_mac_list(vsi, &vsi->tmp_unsync_list);
ice_fltr_free_list(dev, &vsi->tmp_unsync_list);
if (status) {
netdev_err(netdev, "Failed to delete MAC filters\n");
/* if we failed because of alloc failures, just bail */
if (status == ICE_ERR_NO_MEMORY) {
err = -ENOMEM;
goto out;
}
}
/* Add MAC addresses in the sync list */
status = 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 (status && status != ICE_ERR_ALREADY_EXISTS) {
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 == ICE_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 {
err = -EIO;
goto out;
}
}
/* check for changes in promiscuous modes */
if (changed_flags & IFF_ALLMULTI) {
if (vsi->current_netdev_flags & IFF_ALLMULTI) {
if (vsi->num_vlan > 1)
promisc_m = ICE_MCAST_VLAN_PROMISC_BITS;
else
promisc_m = ICE_MCAST_PROMISC_BITS;
err = ice_cfg_promisc(vsi, promisc_m, true);
if (err) {
netdev_err(netdev, "Error setting Multicast promiscuous mode on VSI %i\n",
vsi->vsi_num);
vsi->current_netdev_flags &= ~IFF_ALLMULTI;
goto out_promisc;
}
} else {
/* !(vsi->current_netdev_flags & IFF_ALLMULTI) */
if (vsi->num_vlan > 1)
promisc_m = ICE_MCAST_VLAN_PROMISC_BITS;
else
promisc_m = ICE_MCAST_PROMISC_BITS;
err = ice_cfg_promisc(vsi, promisc_m, false);
if (err) {
netdev_err(netdev, "Error clearing Multicast promiscuous mode on VSI %i\n",
vsi->vsi_num);
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(pf->first_sw)) {
err = ice_set_dflt_vsi(pf->first_sw, 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;
}
ice_cfg_vlan_pruning(vsi, false);
}
} else {
/* Clear Rx filter to remove traffic from wire */
if (ice_is_vsi_dflt_vsi(pf->first_sw, vsi)) {
err = ice_clear_dflt_vsi(pf->first_sw);
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->num_vlan > 1)
ice_cfg_vlan_pruning(vsi, true);
}
}
}
goto exit;
out_promisc:
set_bit(ICE_VSI_PROMISC_CHANGED, vsi->state);
goto exit;
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
*/
static void 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
*/
static void 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);
for (node = 0; node < ICE_MAX_PF_AGG_NODES; node++)
pf->pf_agg_node[node].num_vsis = 0;
for (node = 0; node < ICE_MAX_VF_AGG_NODES; node++)
pf->vf_agg_node[node].num_vsis = 0;
}
/**
* ice_prepare_for_reset - prep for reset
* @pf: board private structure
* @reset_type: reset type requested
*
* Inform or close all dependent features in prep for reset.
*/
static void
ice_prepare_for_reset(struct ice_pf *pf, enum ice_reset_req reset_type)
{
struct ice_hw *hw = &pf->hw;
struct ice_vsi *vsi;
unsigned int i;
dev_dbg(ice_pf_to_dev(pf), "reset_type=%d\n", reset_type);
/* already prepared for reset */
if (test_bit(ICE_PREPARED_FOR_RESET, pf->state))
return;
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 */
ice_for_each_vf(pf, i)
ice_set_vf_state_qs_dis(&pf->vf[i]);
/* 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));
}
}
skip:
/* clear SW filtering DB */
ice_clear_hw_tbls(hw);
/* disable the VSIs and their queues that are not already DOWN */
ice_pf_dis_all_vsi(pf, false);
if (test_bit(ICE_FLAG_PTP_SUPPORTED, pf->flags))
ice_ptp_release(pf);
if (hw->port_info)
ice_sched_clear_port(hw->port_info);
ice_shutdown_all_ctrlq(hw);
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.
*/
static void 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;
dev_dbg(dev, "reset_type 0x%x requested\n", reset_type);
ice_prepare_for_reset(pf, reset_type);
/* trigger the reset */
if (ice_reset(hw, reset_type)) {
dev_err(dev, "reset %d failed\n", reset_type);
set_bit(ICE_RESET_FAILED, pf->state);
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);
return;
}
/* 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, true);
}
}
/**
* ice_reset_subtask - Set up for resetting the device and driver
* @pf: board private structure
*/
static void 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, true);
}
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 (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
*/
static void 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;
const char *an_advertised;
enum ice_status status;
const char *fec_req;
const char *speed;
const char *fec;
const char *fc;
const char *an;
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_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");
an_advertised = ice_is_phy_caps_an_enabled(caps) ? "On" : "Off";
if (caps->link_fec_options & ICE_AQC_PHY_FEC_25G_RS_528_REQ ||
caps->link_fec_options & ICE_AQC_PHY_FEC_25G_RS_544_REQ)
fec_req = "RS-FEC";
else if (caps->link_fec_options & ICE_AQC_PHY_FEC_10G_KR_40G_KR4_REQ ||
caps->link_fec_options & ICE_AQC_PHY_FEC_25G_KR_REQ)
fec_req = "FC-FEC/BASE-R";
else
fec_req = "NONE";
kfree(caps);
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
*/
static void 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;
if (link_up) {
netif_carrier_on(vsi->netdev);
netif_tx_wake_all_queues(vsi->netdev);
} else {
netif_carrier_off(vsi->netdev);
netif_tx_stop_all_queues(vsi->netdev);
}
}
}
/**
* 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.
*/
static void 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;
}
/* Add ETS CFG TLV */
tlv = (struct ice_lldp_org_tlv *)lldpmib;
typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
ICE_IEEE_ETS_TLV_LEN);
tlv->typelen = htons(typelen);
ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
ICE_IEEE_SUBTYPE_ETS_CFG);
tlv->ouisubtype = htonl(ouisubtype);
buf = tlv->tlvinfo;
buf[0] = 0;
/* ETS CFG all UPs map to TC 0. Next 4 (1 - 4) Octets = 0.
* Octets 5 - 12 are BW values, set octet 5 to 100% BW.
* Octets 13 - 20 are TSA values - leave as zeros
*/
buf[5] = 0x64;
len = (typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S;
offset += len + 2;
tlv = (struct ice_lldp_org_tlv *)
((char *)tlv + sizeof(tlv->typelen) + len);
/* Add ETS REC TLV */
buf = tlv->tlvinfo;
tlv->typelen = htons(typelen);
ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
ICE_IEEE_SUBTYPE_ETS_REC);
tlv->ouisubtype = htonl(ouisubtype);
/* 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);
/* Add PFC CFG TLV */
typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
ICE_IEEE_PFC_TLV_LEN);
tlv->typelen = htons(typelen);
ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
ICE_IEEE_SUBTYPE_PFC_CFG);
tlv->ouisubtype = htonl(ouisubtype);
/* Octet 1 left as all zeros - PFC disabled */
buf[0] = 0x08;
len = (typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S;
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
*/
static void 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
*/
static void 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);
} else if (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
*/
static void 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
*/
static int
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;
enum ice_status status;
struct ice_vsi *vsi;
u16 old_link_speed;
bool old_link;
phy_info = &pi->phy;
phy_info->link_info_old = phy_info->link_info;
old_link = !!(phy_info->link_info_old.link_info & ICE_AQ_LINK_UP);
old_link_speed = phy_info->link_info_old.link_speed;
/* 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 %s aq_err %s\n",
pi->lport, ice_stat_str(status),
ice_aq_str(pi->hw->adminq.sq_last_status));
ice_check_link_cfg_err(pf, pi->phy.link_info.link_cfg_err);
/* 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 (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
*/
static void 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
*/
static int ice_init_link_events(struct ice_port_info *pi)
{
u16 mask;
mask = ~((u16)(ICE_AQ_LINK_EVENT_UPDOWN | ICE_AQ_LINK_EVENT_MEDIA_NA |
ICE_AQ_LINK_EVENT_MODULE_QUAL_FAIL |
ICE_AQ_LINK_EVENT_PHY_FW_LOAD_FAIL));
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
*/
static int
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;
link_data = (struct ice_aqc_get_link_status_data *)event->msg_buf;
port_info = pf->hw.port_info;
if (!port_info)
return -EINVAL;
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;
}
enum ice_aq_task_state {
ICE_AQ_TASK_WAITING = 0,
ICE_AQ_TASK_COMPLETE,
ICE_AQ_TASK_CANCELED,
};
struct ice_aq_task {
struct hlist_node entry;
u16 opcode;
struct ice_rq_event_info *event;
enum ice_aq_task_state state;
};
/**
* ice_aq_wait_for_event - Wait for an AdminQ event from firmware
* @pf: pointer to the PF private structure
* @opcode: the opcode to wait for
* @timeout: how long to wait, in jiffies
* @event: storage for the event info
*
* 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.
*
* To obtain only the descriptor contents, pass an event without an allocated
* msg_buf. If the complete data buffer is desired, allocate the
* event->msg_buf with enough space ahead of time.
*
* Returns: zero on success, or a negative error code on failure.
*/
int ice_aq_wait_for_event(struct ice_pf *pf, u16 opcode, unsigned long timeout,
struct ice_rq_event_info *event)
{
struct device *dev = ice_pf_to_dev(pf);
struct ice_aq_task *task;
unsigned long start;
long ret;
int err;
task = kzalloc(sizeof(*task), GFP_KERNEL);
if (!task)
return -ENOMEM;
INIT_HLIST_NODE(&task->entry);
task->opcode = opcode;
task->event = event;
task->state = ICE_AQ_TASK_WAITING;
spin_lock_bh(&pf->aq_wait_lock);
hlist_add_head(&task->entry, &pf->aq_wait_list);
spin_unlock_bh(&pf->aq_wait_lock);
start = jiffies;
ret = wait_event_interruptible_timeout(pf->aq_wait_queue, task->state,
timeout);
switch (task->state) {
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", task->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),
opcode);
spin_lock_bh(&pf->aq_wait_lock);
hlist_del(&task->entry);
spin_unlock_bh(&pf->aq_wait_lock);
kfree(task);
return err;
}
/**
* 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
*/
static void ice_aq_check_events(struct ice_pf *pf, u16 opcode,
struct ice_rq_event_info *event)
{
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 || task->opcode != opcode)
continue;
memcpy(&task->event->desc, &event->desc, sizeof(event->desc));
task->event->msg_len = event->msg_len;
/* Only copy the data buffer if a destination was set */
if (task->event->msg_buf &&
task->event->buf_len > event->buf_len) {
memcpy(task->event->msg_buf, event->msg_buf,
event->buf_len);
task->event->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.
*/
static void ice_aq_cancel_waiting_tasks(struct ice_pf *pf)
{
struct ice_aq_task *task;
spin_lock_bh(&pf->aq_wait_lock);
hlist_for_each_entry(task, &pf->aq_wait_list, entry)
task->state = ICE_AQ_TASK_CANCELED;
spin_unlock_bh(&pf->aq_wait_lock);
wake_up(&pf->aq_wait_queue);
}
/**
* __ice_clean_ctrlq - helper function to clean controlq rings
* @pf: ptr to struct ice_pf
* @q_type: specific Control queue type
*/
static int __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;
const char *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);
}
event.buf_len = cq->rq_buf_size;
event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
if (!event.msg_buf)
return 0;
do {
enum ice_status ret;
u16 opcode;
ret = ice_clean_rq_elem(hw, cq, &event, &pending);
if (ret == ICE_ERR_AQ_NO_WORK)
break;
if (ret) {
dev_err(dev, "%s Receive Queue event error %s\n", qtype,
ice_stat_str(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_malicious_vf(pf, &event, i, pending))
ice_vc_process_vf_msg(pf, &event);
break;
case ice_aqc_opc_fw_logging:
ice_output_fw_log(hw, &event.desc, event.msg_buf);
break;
case ice_aqc_opc_lldp_set_mib_change:
ice_dcb_process_lldp_set_mib_change(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
*/
static bool ice_ctrlq_pending(struct ice_hw *hw, struct ice_ctl_q_info *cq)
{
u16 ntu;
ntu = (u16)(rd32(hw, cq->rq.head) & cq->rq.head_mask);
return cq->rq.next_to_clean != ntu;
}
/**
* ice_clean_adminq_subtask - clean the AdminQ rings
* @pf: board private structure
*/
static void ice_clean_adminq_subtask(struct ice_pf *pf)
{
struct ice_hw *hw = &pf->hw;
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);
ice_flush(hw);
}
/**
* ice_clean_mailboxq_subtask - clean the MailboxQ rings
* @pf: board private structure
*/
static void ice_clean_mailboxq_subtask(struct ice_pf *pf)
{
struct ice_hw *hw = &pf->hw;
if (!test_bit(ICE_MAILBOXQ_EVENT_PENDING, pf->state))
return;
if (__ice_clean_ctrlq(pf, ICE_CTL_Q_MAILBOX))
return;
clear_bit(ICE_MAILBOXQ_EVENT_PENDING, pf->state);
if (ice_ctrlq_pending(hw, &hw->mailboxq))
__ice_clean_ctrlq(pf, ICE_CTL_Q_MAILBOX);
ice_flush(hw);
}
/**
* ice_clean_sbq_subtask - clean the Sideband Queue rings
* @pf: board private structure
*/
static void ice_clean_sbq_subtask(struct ice_pf *pf)
{
struct ice_hw *hw = &pf->hw;
/* Nothing to do here if sideband queue is not supported */
if (!ice_is_sbq_supported(hw)) {
clear_bit(ICE_SIDEBANDQ_EVENT_PENDING, pf->state);
return;
}
if (!test_bit(ICE_SIDEBANDQ_EVENT_PENDING, pf->state))
return;
if (__ice_clean_ctrlq(pf, ICE_CTL_Q_SB))
return;
clear_bit(ICE_SIDEBANDQ_EVENT_PENDING, pf->state);
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
*/
static void 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.
*/
static int 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)
del_timer_sync(&pf->serv_tmr);
if (pf->serv_task.func)
cancel_work_sync(&pf->serv_task);
clear_bit(ICE_SERVICE_SCHED, pf->state);
return ret;
}
/**
* 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)
*/
static void 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
*/
static void ice_service_timer(struct timer_list *t)
{
struct ice_pf *pf = from_timer(pf, t, serv_tmr);
mod_timer(&pf->serv_tmr, round_jiffies(pf->serv_tmr_period + jiffies));
ice_service_task_schedule(pf);
}
/**
* 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.
*/
static void ice_handle_mdd_event(struct ice_pf *pf)
{
struct device *dev = ice_pf_to_dev(pf);
struct ice_hw *hw = &pf->hw;
unsigned int i;
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;
}
/* find what triggered an MDD event */
reg = rd32(hw, GL_MDET_TX_PQM);
if (reg & GL_MDET_TX_PQM_VALID_M) {
u8 pf_num = (reg & GL_MDET_TX_PQM_PF_NUM_M) >>
GL_MDET_TX_PQM_PF_NUM_S;
u16 vf_num = (reg & GL_MDET_TX_PQM_VF_NUM_M) >>
GL_MDET_TX_PQM_VF_NUM_S;
u8 event = (reg & GL_MDET_TX_PQM_MAL_TYPE_M) >>
GL_MDET_TX_PQM_MAL_TYPE_S;
u16 queue = ((reg & GL_MDET_TX_PQM_QNUM_M) >>
GL_MDET_TX_PQM_QNUM_S);
if (netif_msg_tx_err(pf))
dev_info(dev, "Malicious Driver Detection event %d on TX queue %d PF# %d VF# %d\n",
event, queue, pf_num, vf_num);
wr32(hw, GL_MDET_TX_PQM, 0xffffffff);
}
reg = rd32(hw, GL_MDET_TX_TCLAN);
if (reg & GL_MDET_TX_TCLAN_VALID_M) {
u8 pf_num = (reg & GL_MDET_TX_TCLAN_PF_NUM_M) >>
GL_MDET_TX_TCLAN_PF_NUM_S;
u16 vf_num = (reg & GL_MDET_TX_TCLAN_VF_NUM_M) >>
GL_MDET_TX_TCLAN_VF_NUM_S;
u8 event = (reg & GL_MDET_TX_TCLAN_MAL_TYPE_M) >>
GL_MDET_TX_TCLAN_MAL_TYPE_S;
u16 queue = ((reg & GL_MDET_TX_TCLAN_QNUM_M) >>
GL_MDET_TX_TCLAN_QNUM_S);
if (netif_msg_tx_err(pf))
dev_info(dev, "Malicious Driver Detection event %d on TX queue %d PF# %d VF# %d\n",
event, queue, pf_num, vf_num);
wr32(hw, GL_MDET_TX_TCLAN, 0xffffffff);
}
reg = rd32(hw, GL_MDET_RX);
if (reg & GL_MDET_RX_VALID_M) {
u8 pf_num = (reg & GL_MDET_RX_PF_NUM_M) >>
GL_MDET_RX_PF_NUM_S;
u16 vf_num = (reg & GL_MDET_RX_VF_NUM_M) >>
GL_MDET_RX_VF_NUM_S;
u8 event = (reg & GL_MDET_RX_MAL_TYPE_M) >>
GL_MDET_RX_MAL_TYPE_S;
u16 queue = ((reg & GL_MDET_RX_QNUM_M) >>
GL_MDET_RX_QNUM_S);
if (netif_msg_rx_err(pf))
dev_info(dev, "Malicious Driver Detection event %d on RX queue %d PF# %d VF# %d\n",
event, queue, pf_num, vf_num);
wr32(hw, GL_MDET_RX, 0xffffffff);
}
/* 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);
if (reg & PF_MDET_TX_TCLAN_VALID_M) {
wr32(hw, PF_MDET_TX_TCLAN, 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
*/
ice_for_each_vf(pf, i) {
struct ice_vf *vf = &pf->vf[i];
reg = rd32(hw, VP_MDET_TX_PQM(i));
if (reg & VP_MDET_TX_PQM_VALID_M) {
wr32(hw, VP_MDET_TX_PQM(i), 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",
i);
}
reg = rd32(hw, VP_MDET_TX_TCLAN(i));
if (reg & VP_MDET_TX_TCLAN_VALID_M) {
wr32(hw, VP_MDET_TX_TCLAN(i), 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",
i);
}
reg = rd32(hw, VP_MDET_TX_TDPU(i));
if (reg & VP_MDET_TX_TDPU_VALID_M) {
wr32(hw, VP_MDET_TX_TDPU(i), 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",
i);
}
reg = rd32(hw, VP_MDET_RX(i));
if (reg & VP_MDET_RX_VALID_M) {
wr32(hw, VP_MDET_RX(i), 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",
i);
/* Since the queue is disabled on VF Rx MDD events, the
* PF can be configured to reset the VF through ethtool
* private flag mdd-auto-reset-vf.
*/
if (test_bit(ICE_FLAG_MDD_AUTO_RESET_VF, pf->flags)) {
/* VF MDD event counters will be cleared by
* reset, so print the event prior to reset.
*/
ice_print_vf_rx_mdd_event(vf);
ice_reset_vf(&pf->vf[i], false);
}
}
}
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
*/
static int 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;
}
cfg->caps |= ICE_AQ_PHY_ENA_AUTO_LINK_UPDT;
if (link_up)
cfg->caps |= ICE_AQ_PHY_ENA_LINK;
else
cfg->caps &= ~ICE_AQ_PHY_ENA_LINK;
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
*/
static int 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;
enum ice_status status;
int err = 0;
pcaps = kzalloc(sizeof(*pcaps), GFP_KERNEL);
if (!pcaps)
return -ENOMEM;
status = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_TOPO_CAP_NO_MEDIA, pcaps,
NULL);
if (status) {
dev_err(ice_pf_to_dev(pf), "Get PHY capability failed.\n");
err = -EIO;
goto out;
}
pf->nvm_phy_type_hi = pcaps->phy_type_high;
pf->nvm_phy_type_lo = pcaps->phy_type_low;
out:
kfree(pcaps);
return err;
}
/**
* ice_init_link_dflt_override - Initialize link default override
* @pi: port info structure
*
* Initialize link default override and PHY total port shutdown during probe
*/
static void 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.
*/
static void 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;
if (ldo->phy_type_low || ldo->phy_type_high) {
cfg->phy_type_low = pf->nvm_phy_type_lo &
cpu_to_le64(ldo->phy_type_low);
cfg->phy_type_high = pf->nvm_phy_type_hi &
cpu_to_le64(ldo->phy_type_high);
}
cfg->link_fec_opt = ldo->fec_options;
phy->curr_user_fec_req = ICE_FEC_AUTO;
set_bit(ICE_LINK_DEFAULT_OVERRIDE_PENDING, pf->state);
}
/**
* 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
*/
static int 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;
enum ice_status status;
int err = 0;
if (!(phy->link_info.link_info & ICE_AQ_MEDIA_AVAILABLE))
return -EIO;
pcaps = kzalloc(sizeof(*pcaps), GFP_KERNEL);
if (!pcaps)
return -ENOMEM;
if (ice_fw_supports_report_dflt_cfg(pi->hw))
status = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_DFLT_CFG,
pcaps, NULL);
else
status = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_TOPO_CAP_MEDIA,
pcaps, NULL);
if (status) {
dev_err(ice_pf_to_dev(pf), "Get PHY capability failed.\n");
err = -EIO;
goto err_out;
}
ice_copy_phy_caps_to_cfg(pi, pcaps, &pi->phy.curr_user_phy_cfg);
/* 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);
out:
phy->curr_user_speed_req = ICE_AQ_LINK_SPEED_M;
set_bit(ICE_PHY_INIT_COMPLETE, pf->state);
err_out:
kfree(pcaps);
return err;
}
/**
* 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.
*/
static int 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;
enum ice_status status;
int err = 0;
/* Ensure we have media as we cannot configure a medialess port */
if (!(phy->link_info.link_info & ICE_AQ_MEDIA_AVAILABLE))
return -EPERM;
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 */
status = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_ACTIVE_CFG, pcaps,
NULL);
if (status) {
dev_err(dev, "Failed to get PHY configuration, VSI %d error %s\n",
vsi->vsi_num, ice_stat_str(status));
err = -EIO;
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))
status = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_DFLT_CFG,
pcaps, NULL);
else
status = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_TOPO_CAP_MEDIA,
pcaps, NULL);
if (status) {
dev_err(dev, "Failed to get PHY caps, VSI %d error %s\n",
vsi->vsi_num, ice_stat_str(status));
err = -EIO;
goto done;
}
cfg = kzalloc(sizeof(*cfg), GFP_KERNEL);
if (!cfg) {
err = -ENOMEM;
goto done;
}
ice_copy_phy_caps_to_cfg(pi, pcaps, cfg);
/* 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;
cfg->phy_type_high = phy->curr_user_phy_cfg.phy_type_high;
} else {
u64 phy_low = 0, phy_high = 0;
ice_update_phy_type(&phy_low, &phy_high,
pi->phy.curr_user_speed_req);
cfg->phy_type_low = pcaps->phy_type_low & cpu_to_le64(phy_low);
cfg->phy_type_high = pcaps->phy_type_high &
cpu_to_le64(phy_high);
}
/* Can't provide what was requested; use PHY capabilities */
if (!cfg->phy_type_low && !cfg->phy_type_high) {
cfg->phy_type_low = pcaps->phy_type_low;
cfg->phy_type_high = pcaps->phy_type_high;
}
/* FEC */
ice_cfg_phy_fec(pi, cfg, phy->curr_user_fec_req);
/* Can't provide what was requested; use PHY capabilities */
if (cfg->link_fec_opt !=
(cfg->link_fec_opt & pcaps->link_fec_options)) {
cfg->caps |= pcaps->caps & ICE_AQC_PHY_EN_AUTO_FEC;
cfg->link_fec_opt = pcaps->link_fec_options;
}
/* Flow Control - always supported; no need to check against
* capabilities
*/
ice_cfg_phy_fc(pi, cfg, phy->curr_user_fc_req);
/* Enable link and link update */
cfg->caps |= ICE_AQ_PHY_ENA_AUTO_LINK_UPDT | ICE_AQ_PHY_ENA_LINK;
status = ice_aq_set_phy_cfg(&pf->hw, pi, cfg, NULL);
if (status) {
dev_err(dev, "Failed to set phy config, VSI %d error %s\n",
vsi->vsi_num, ice_stat_str(status));
err = -EIO;
}
kfree(cfg);
done:
kfree(pcaps);
return err;
}
/**
* ice_check_media_subtask - Check for media
* @pf: pointer to PF struct
*
* If media is available, then initialize PHY user configuration if it is not
* been, and configure the PHY if the interface is up.
*/
static void ice_check_media_subtask(struct ice_pf *pf)
{
struct ice_port_info *pi;
struct ice_vsi *vsi;
int err;
/* No need to check for media if it's already present */
if (!test_bit(ICE_FLAG_NO_MEDIA, pf->flags))
return;
vsi = ice_get_main_vsi(pf);
if (!vsi)
return;
/* Refresh link info and check if media is present */
pi = vsi->port_info;
err = ice_update_link_info(pi);
if (err)
return;
ice_check_link_cfg_err(pf, pi->phy.link_info.link_cfg_err);
if (pi->phy.link_info.link_info & ICE_AQ_MEDIA_AVAILABLE) {
if (!test_bit(ICE_PHY_INIT_COMPLETE, pf->state))
ice_init_phy_user_cfg(pi);
/* PHY settings are reset on media insertion, reconfigure
* PHY to preserve settings.
*/
if (test_bit(ICE_VSI_DOWN, vsi->state) &&
test_bit(ICE_FLAG_LINK_DOWN_ON_CLOSE_ENA, vsi->back->flags))
return;
err = ice_configure_phy(vsi);
if (!err)
clear_bit(ICE_FLAG_NO_MEDIA, pf->flags);
/* A Link Status Event will be generated; the event handler
* will complete bringing the interface up
*/
}
}
/**
* ice_service_task - manage and run subtasks
* @work: pointer to work_struct contained by the PF struct
*/
static void ice_service_task(struct work_struct *work)
{
struct ice_pf *pf = container_of(work, struct ice_pf, serv_task);
unsigned long start_time = jiffies;
/* subtasks */
/* process reset requests first */
ice_reset_subtask(pf);
/* bail if a reset/recovery cycle is pending or rebuild failed */
if (ice_is_reset_in_progress(pf->state) ||
test_bit(ICE_SUSPENDED, pf->state) ||
test_bit(ICE_NEEDS_RESTART, pf->state)) {
ice_service_task_complete(pf);
return;
}
ice_clean_adminq_subtask(pf);
ice_check_media_subtask(pf);
ice_check_for_hang_subtask(pf);
ice_sync_fltr_subtask(pf);
ice_handle_mdd_event(pf);
ice_watchdog_subtask(pf);
if (ice_is_safe_mode(pf)) {
ice_service_task_complete(pf);
return;
}
ice_process_vflr_event(pf);
ice_clean_mailboxq_subtask(pf);
ice_clean_sbq_subtask(pf);
ice_sync_arfs_fltrs(pf);
ice_flush_fdir_ctx(pf);
/* Clear ICE_SERVICE_SCHED flag to allow scheduling next event */
ice_service_task_complete(pf);
/* If the tasks have taken longer than one service timer period
* or there is more work to be done, reset the service timer to
* schedule the service task now.
*/
if (time_after(jiffies, (start_time + pf->serv_tmr_period)) ||
test_bit(ICE_MDD_EVENT_PENDING, pf->state) ||
test_bit(ICE_VFLR_EVENT_PENDING, pf->state) ||
test_bit(ICE_MAILBOXQ_EVENT_PENDING, pf->state) ||
test_bit(ICE_FD_VF_FLUSH_CTX, pf->state) ||
test_bit(ICE_SIDEBANDQ_EVENT_PENDING, pf->state) ||
test_bit(ICE_ADMINQ_EVENT_PENDING, pf->state))
mod_timer(&pf->serv_tmr, jiffies);
}
/**
* ice_set_ctrlq_len - helper function to set controlq length
* @hw: pointer to the HW instance
*/
static void ice_set_ctrlq_len(struct ice_hw *hw)
{
hw->adminq.num_rq_entries = ICE_AQ_LEN;
hw->adminq.num_sq_entries = ICE_AQ_LEN;
hw->adminq.rq_buf_size = ICE_AQ_MAX_BUF_LEN;
hw->adminq.sq_buf_size = ICE_AQ_MAX_BUF_LEN;
hw->mailboxq.num_rq_entries = PF_MBX_ARQLEN_ARQLEN_M;
hw->mailboxq.num_sq_entries = ICE_MBXSQ_LEN;
hw->mailboxq.rq_buf_size = ICE_MBXQ_MAX_BUF_LEN;
hw->mailboxq.sq_buf_size = ICE_MBXQ_MAX_BUF_LEN;
hw->sbq.num_rq_entries = ICE_SBQ_LEN;
hw->sbq.num_sq_entries = ICE_SBQ_LEN;
hw->sbq.rq_buf_size = ICE_SBQ_MAX_BUF_LEN;
hw->sbq.sq_buf_size = ICE_SBQ_MAX_BUF_LEN;
}
/**
* ice_schedule_reset - schedule a reset
* @pf: board private structure
* @reset: reset being requested
*/
int ice_schedule_reset(struct ice_pf *pf, enum ice_reset_req reset)
{
struct device *dev = ice_pf_to_dev(pf);
/* bail out if earlier reset has failed */
if (test_bit(ICE_RESET_FAILED, pf->state)) {
dev_dbg(dev, "earlier reset has failed\n");
return -EIO;
}
/* bail if reset/recovery already in progress */
if (ice_is_reset_in_progress(pf->state)) {
dev_dbg(dev, "Reset already in progress\n");
return -EBUSY;
}
ice_unplug_aux_dev(pf);
switch (reset) {
case ICE_RESET_PFR:
set_bit(ICE_PFR_REQ, pf->state);
break;
case ICE_RESET_CORER:
set_bit(ICE_CORER_REQ, pf->state);
break;
case ICE_RESET_GLOBR:
set_bit(ICE_GLOBR_REQ, pf->state);
break;
default:
return -EINVAL;
}
ice_service_task_schedule(pf);
return 0;
}
/**
* ice_irq_affinity_notify - Callback for affinity changes
* @notify: context as to what irq was changed
* @mask: the new affinity mask
*
* This is a callback function used by the irq_set_affinity_notifier function
* so that we may register to receive changes to the irq affinity masks.
*/
static void
ice_irq_affinity_notify(struct irq_affinity_notify *notify,
const cpumask_t *mask)
{
struct ice_q_vector *q_vector =
container_of(notify, struct ice_q_vector, affinity_notify);
cpumask_copy(&q_vector->affinity_mask, mask);
}
/**
* ice_irq_affinity_release - Callback for affinity notifier release
* @ref: internal core kernel usage
*
* This is a callback function used by the irq_set_affinity_notifier function
* to inform the current notification subscriber that they will no longer
* receive notifications.
*/
static void ice_irq_affinity_release(struct kref __always_unused *ref) {}
/**
* ice_vsi_ena_irq - Enable IRQ for the given VSI
* @vsi: the VSI being configured
*/
static int ice_vsi_ena_irq(struct ice_vsi *vsi)
{
struct ice_hw *hw = &vsi->back->hw;
int i;
ice_for_each_q_vector(vsi, i)
ice_irq_dynamic_ena(hw, vsi, vsi->q_vectors[i]);
ice_flush(hw);
return 0;
}
/**
* ice_vsi_req_irq_msix - get MSI-X vectors from the OS for the VSI
* @vsi: the VSI being configured
* @basename: name for the vector
*/
static int ice_vsi_req_irq_msix(struct ice_vsi *vsi, char *basename)
{
int q_vectors = vsi->num_q_vectors;
struct ice_pf *pf = vsi->back;
int base = vsi->base_vector;
struct device *dev;
int rx_int_idx = 0;
int tx_int_idx = 0;
int vector, err;
int irq_num;
dev = ice_pf_to_dev(pf);
for (vector = 0; vector < q_vectors; vector++) {
struct ice_q_vector *q_vector = vsi->q_vectors[vector];
irq_num = pf->msix_entries[base + vector].vector;
if (q_vector->tx.tx_ring && q_vector->rx.rx_ring) {
snprintf(q_vector->name, sizeof(q_vector->name) - 1,
"%s-%s-%d", basename, "TxRx", rx_int_idx++);
tx_int_idx++;
} else if (q_vector->rx.rx_ring) {
snprintf(q_vector->name, sizeof(q_vector->name) - 1,
"%s-%s-%d", basename, "rx", rx_int_idx++);
} else if (q_vector->tx.tx_ring) {
snprintf(q_vector->name, sizeof(q_vector->name) - 1,
"%s-%s-%d", basename, "tx", tx_int_idx++);
} else {
/* skip this unused q_vector */
continue;
}
if (vsi->type == ICE_VSI_CTRL && vsi->vf_id != ICE_INVAL_VFID)
err = devm_request_irq(dev, irq_num, vsi->irq_handler,
IRQF_SHARED, q_vector->name,
q_vector);
else
err = devm_request_irq(dev, irq_num, vsi->irq_handler,
0, q_vector->name, q_vector);
if (err) {
netdev_err(vsi->netdev, "MSIX request_irq failed, error: %d\n",
err);
goto free_q_irqs;
}
/* register for affinity change notifications */
if (!IS_ENABLED(CONFIG_RFS_ACCEL)) {
struct irq_affinity_notify *affinity_notify;
affinity_notify = &q_vector->affinity_notify;
affinity_notify->notify = ice_irq_affinity_notify;
affinity_notify->release = ice_irq_affinity_release;
irq_set_affinity_notifier(irq_num, affinity_notify);
}
/* assign the mask for this irq */
irq_set_affinity_hint(irq_num, &q_vector->affinity_mask);
}
vsi->irqs_ready = true;
return 0;
free_q_irqs:
while (vector) {
vector--;
irq_num = pf->msix_entries[base + vector].vector;
if (!IS_ENABLED(CONFIG_RFS_ACCEL))
irq_set_affinity_notifier(irq_num, NULL);
irq_set_affinity_hint(irq_num, NULL);
devm_free_irq(dev, irq_num, &vsi->q_vectors[vector]);
}
return err;
}
/**
* ice_xdp_alloc_setup_rings - Allocate and setup Tx rings for XDP
* @vsi: VSI to setup Tx rings used by XDP
*
* Return 0 on success and negative value on error
*/
static int ice_xdp_alloc_setup_rings(struct ice_vsi *vsi)
{
struct device *dev = ice_pf_to_dev(vsi->back);
struct ice_tx_desc *tx_desc;
int i, j;
ice_for_each_xdp_txq(vsi, i) {
u16 xdp_q_idx = vsi->alloc_txq + i;
struct ice_tx_ring *xdp_ring;
xdp_ring = kzalloc(sizeof(*xdp_ring), GFP_KERNEL);
if (!xdp_ring)
goto free_xdp_rings;
xdp_ring->q_index = xdp_q_idx;
xdp_ring->reg_idx = vsi->txq_map[xdp_q_idx];
xdp_ring->vsi = vsi;
xdp_ring->netdev = NULL;
xdp_ring->next_dd = ICE_TX_THRESH - 1;
xdp_ring->next_rs = ICE_TX_THRESH - 1;
xdp_ring->dev = dev;
xdp_ring->count = vsi->num_tx_desc;
WRITE_ONCE(vsi->xdp_rings[i], xdp_ring);
if (ice_setup_tx_ring(xdp_ring))
goto free_xdp_rings;
ice_set_ring_xdp(xdp_ring);
xdp_ring->xsk_pool = ice_tx_xsk_pool(xdp_ring);
spin_lock_init(&xdp_ring->tx_lock);
for (j = 0; j < xdp_ring->count; j++) {
tx_desc = ICE_TX_DESC(xdp_ring, j);
tx_desc->cmd_type_offset_bsz = cpu_to_le64(ICE_TX_DESC_DTYPE_DESC_DONE);
}
}
ice_for_each_rxq(vsi, i) {
if (static_key_enabled(&ice_xdp_locking_key))
vsi->rx_rings[i]->xdp_ring = vsi->xdp_rings[i % vsi->num_xdp_txq];
else
vsi->rx_rings[i]->xdp_ring = vsi->xdp_rings[i];
}
return 0;
free_xdp_rings:
for (; i >= 0; i--)
if (vsi->xdp_rings[i] && vsi->xdp_rings[i]->desc)
ice_free_tx_ring(vsi->xdp_rings[i]);
return -ENOMEM;
}
/**
* ice_vsi_assign_bpf_prog - set or clear bpf prog pointer on VSI
* @vsi: VSI to set the bpf prog on
* @prog: the bpf prog pointer
*/
static void ice_vsi_assign_bpf_prog(struct ice_vsi *vsi, struct bpf_prog *prog)
{
struct bpf_prog *old_prog;
int i;
old_prog = xchg(&vsi->xdp_prog, prog);
if (old_prog)
bpf_prog_put(old_prog);
ice_for_each_rxq(vsi, i)
WRITE_ONCE(vsi->rx_rings[i]->xdp_prog, vsi->xdp_prog);
}
/**
* ice_prepare_xdp_rings - Allocate, configure and setup Tx rings for XDP
* @vsi: VSI to bring up Tx rings used by XDP
* @prog: bpf program that will be assigned to VSI
*
* Return 0 on success and negative value on error
*/
int ice_prepare_xdp_rings(struct ice_vsi *vsi, struct bpf_prog *prog)
{
u16 max_txqs[ICE_MAX_TRAFFIC_CLASS] = { 0 };
int xdp_rings_rem = vsi->num_xdp_txq;
struct ice_pf *pf = vsi->back;
struct ice_qs_cfg xdp_qs_cfg = {
.qs_mutex = &pf->avail_q_mutex,
.pf_map = pf->avail_txqs,
.pf_map_size = pf->max_pf_txqs,
.q_count = vsi->num_xdp_txq,
.scatter_count = ICE_MAX_SCATTER_TXQS,
.vsi_map = vsi->txq_map,
.vsi_map_offset = vsi->alloc_txq,
.mapping_mode = ICE_VSI_MAP_CONTIG
};
enum ice_status status;
struct device *dev;
int i, v_idx;
dev = ice_pf_to_dev(pf);
vsi->xdp_rings = devm_kcalloc(dev, vsi->num_xdp_txq,
sizeof(*vsi->xdp_rings), GFP_KERNEL);
if (!vsi->xdp_rings)
return -ENOMEM;
vsi->xdp_mapping_mode = xdp_qs_cfg.mapping_mode;
if (__ice_vsi_get_qs(&xdp_qs_cfg))
goto err_map_xdp;
if (static_key_enabled(&ice_xdp_locking_key))
netdev_warn(vsi->netdev,
"Could not allocate one XDP Tx ring per CPU, XDP_TX/XDP_REDIRECT actions will be slower\n");
if (ice_xdp_alloc_setup_rings(vsi))
goto clear_xdp_rings;
/* follow the logic from ice_vsi_map_rings_to_vectors */
ice_for_each_q_vector(vsi, v_idx) {
struct ice_q_vector *q_vector = vsi->q_vectors[v_idx];
int xdp_rings_per_v, q_id, q_base;
xdp_rings_per_v = DIV_ROUND_UP(xdp_rings_rem,
vsi->num_q_vectors - v_idx);
q_base = vsi->num_xdp_txq - xdp_rings_rem;
for (q_id = q_base; q_id < (q_base + xdp_rings_per_v); q_id++) {
struct ice_tx_ring *xdp_ring = vsi->xdp_rings[q_id];
xdp_ring->q_vector = q_vector;
xdp_ring->next = q_vector->tx.tx_ring;
q_vector->tx.tx_ring = xdp_ring;
}
xdp_rings_rem -= xdp_rings_per_v;
}
/* omit the scheduler update if in reset path; XDP queues will be
* taken into account at the end of ice_vsi_rebuild, where
* ice_cfg_vsi_lan is being called
*/
if (ice_is_reset_in_progress(pf->state))
return 0;
/* tell the Tx scheduler that right now we have
* additional queues
*/
for (i = 0; i < vsi->tc_cfg.numtc; i++)
max_txqs[i] = vsi->num_txq + vsi->num_xdp_txq;
status = ice_cfg_vsi_lan(vsi->port_info, vsi->idx, vsi->tc_cfg.ena_tc,
max_txqs);
if (status) {
dev_err(dev, "Failed VSI LAN queue config for XDP, error: %s\n",
ice_stat_str(status));
goto clear_xdp_rings;
}
/* assign the prog only when it's not already present on VSI;
* this flow is a subject of both ethtool -L and ndo_bpf flows;
* VSI rebuild that happens under ethtool -L can expose us to
* the bpf_prog refcount issues as we would be swapping same
* bpf_prog pointers from vsi->xdp_prog and calling bpf_prog_put
* on it as it would be treated as an 'old_prog'; for ndo_bpf
* this is not harmful as dev_xdp_install bumps the refcount
* before calling the op exposed by the driver;
*/
if (!ice_is_xdp_ena_vsi(vsi))
ice_vsi_assign_bpf_prog(vsi, prog);
return 0;
clear_xdp_rings:
ice_for_each_xdp_txq(vsi, i)
if (vsi->xdp_rings[i]) {
kfree_rcu(vsi->xdp_rings[i], rcu);
vsi->xdp_rings[i] = NULL;
}
err_map_xdp:
mutex_lock(&pf->avail_q_mutex);
ice_for_each_xdp_txq(vsi, i) {
clear_bit(vsi->txq_map[i + vsi->alloc_txq], pf->avail_txqs);
vsi->txq_map[i + vsi->alloc_txq] = ICE_INVAL_Q_INDEX;
}
mutex_unlock(&pf->avail_q_mutex);
devm_kfree(dev, vsi->xdp_rings);
return -ENOMEM;
}
/**
* ice_destroy_xdp_rings - undo the configuration made by ice_prepare_xdp_rings
* @vsi: VSI to remove XDP rings
*
* Detach XDP rings from irq vectors, clean up the PF bitmap and free
* resources
*/
int ice_destroy_xdp_rings(struct ice_vsi *vsi)
{
u16 max_txqs[ICE_MAX_TRAFFIC_CLASS] = { 0 };
struct ice_pf *pf = vsi->back;
int i, v_idx;
/* q_vectors are freed in reset path so there's no point in detaching
* rings; in case of rebuild being triggered not from reset bits
* in pf->state won't be set, so additionally check first q_vector
* against NULL
*/
if (ice_is_reset_in_progress(pf->state) || !vsi->q_vectors[0])
goto free_qmap;
ice_for_each_q_vector(vsi, v_idx) {
struct ice_q_vector *q_vector = vsi->q_vectors[v_idx];
struct ice_tx_ring *ring;
ice_for_each_tx_ring(ring, q_vector->tx)
if (!ring->tx_buf || !ice_ring_is_xdp(ring))
break;
/* restore the value of last node prior to XDP setup */
q_vector->tx.tx_ring = ring;
}
free_qmap:
mutex_lock(&pf->avail_q_mutex);
ice_for_each_xdp_txq(vsi, i) {
clear_bit(vsi->txq_map[i + vsi->alloc_txq], pf->avail_txqs);
vsi->txq_map[i + vsi->alloc_txq] = ICE_INVAL_Q_INDEX;
}
mutex_unlock(&pf->avail_q_mutex);
ice_for_each_xdp_txq(vsi, i)
if (vsi->xdp_rings[i]) {
if (vsi->xdp_rings[i]->desc)
ice_free_tx_ring(vsi->xdp_rings[i]);
kfree_rcu(vsi->xdp_rings[i], rcu);
vsi->xdp_rings[i] = NULL;
}
devm_kfree(ice_pf_to_dev(pf), vsi->xdp_rings);
vsi->xdp_rings = NULL;
if (static_key_enabled(&ice_xdp_locking_key))
static_branch_dec(&ice_xdp_locking_key);
if (ice_is_reset_in_progress(pf->state) || !vsi->q_vectors[0])
return 0;
ice_vsi_assign_bpf_prog(vsi, NULL);
/* notify Tx scheduler that we destroyed XDP queues and bring
* back the old number of child nodes
*/
for (i = 0; i < vsi->tc_cfg.numtc; i++)
max_txqs[i] = vsi->num_txq;
/* change number of XDP Tx queues to 0 */
vsi->num_xdp_txq = 0;
return ice_cfg_vsi_lan(vsi->port_info, vsi->idx, vsi->tc_cfg.ena_tc,
max_txqs);
}
/**
* ice_vsi_rx_napi_schedule - Schedule napi on RX queues from VSI
* @vsi: VSI to schedule napi on
*/
static void ice_vsi_rx_napi_schedule(struct ice_vsi *vsi)
{
int i;
ice_for_each_rxq(vsi, i) {
struct ice_rx_ring *rx_ring = vsi->rx_rings[i];
if (rx_ring->xsk_pool)
napi_schedule(&rx_ring->q_vector->napi);
}
}
/**
* ice_vsi_determine_xdp_res - figure out how many Tx qs can XDP have
* @vsi: VSI to determine the count of XDP Tx qs
*
* returns 0 if Tx qs count is higher than at least half of CPU count,
* -ENOMEM otherwise
*/
int ice_vsi_determine_xdp_res(struct ice_vsi *vsi)
{
u16 avail = ice_get_avail_txq_count(vsi->back);
u16 cpus = num_possible_cpus();
if (avail < cpus / 2)
return -ENOMEM;
vsi->num_xdp_txq = min_t(u16, avail, cpus);
if (vsi->num_xdp_txq < cpus)
static_branch_inc(&ice_xdp_locking_key);
return 0;
}
/**
* ice_xdp_setup_prog - Add or remove XDP eBPF program
* @vsi: VSI to setup XDP for
* @prog: XDP program
* @extack: netlink extended ack
*/
static int
ice_xdp_setup_prog(struct ice_vsi *vsi, struct bpf_prog *prog,
struct netlink_ext_ack *extack)
{
int frame_size = vsi->netdev->mtu + ICE_ETH_PKT_HDR_PAD;
bool if_running = netif_running(vsi->netdev);
int ret = 0, xdp_ring_err = 0;
if (frame_size > vsi->rx_buf_len) {
NL_SET_ERR_MSG_MOD(extack, "MTU too large for loading XDP");
return -EOPNOTSUPP;
}
/* need to stop netdev while setting up the program for Rx rings */
if (if_running && !test_and_set_bit(ICE_VSI_DOWN, vsi->state)) {
ret = ice_down(vsi);
if (ret) {
NL_SET_ERR_MSG_MOD(extack, "Preparing device for XDP attach failed");
return ret;
}
}
if (!ice_is_xdp_ena_vsi(vsi) && prog) {
xdp_ring_err = ice_vsi_determine_xdp_res(vsi);
if (xdp_ring_err) {
NL_SET_ERR_MSG_MOD(extack, "Not enough Tx resources for XDP");
} else {
xdp_ring_err = ice_prepare_xdp_rings(vsi, prog);
if (xdp_ring_err)
NL_SET_ERR_MSG_MOD(extack, "Setting up XDP Tx resources failed");
}
} else if (ice_is_xdp_ena_vsi(vsi) && !prog) {
xdp_ring_err = ice_destroy_xdp_rings(vsi);
if (xdp_ring_err)
NL_SET_ERR_MSG_MOD(extack, "Freeing XDP Tx resources failed");
} else {
/* safe to call even when prog == vsi->xdp_prog as
* dev_xdp_install in net/core/dev.c incremented prog's
* refcount so corresponding bpf_prog_put won't cause
* underflow
*/
ice_vsi_assign_bpf_prog(vsi, prog);
}
if (if_running)
ret = ice_up(vsi);
if (!ret && prog)
ice_vsi_rx_napi_schedule(vsi);
return (ret || xdp_ring_err) ? -ENOMEM : 0;
}
/**
* ice_xdp_safe_mode - XDP handler for safe mode
* @dev: netdevice
* @xdp: XDP command
*/
static int ice_xdp_safe_mode(struct net_device __always_unused *dev,
struct netdev_bpf *xdp)
{
NL_SET_ERR_MSG_MOD(xdp->extack,
"Please provide working DDP firmware package in order to use XDP\n"
"Refer to Documentation/networking/device_drivers/ethernet/intel/ice.rst");
return -EOPNOTSUPP;
}
/**
* ice_xdp - implements XDP handler
* @dev: netdevice
* @xdp: XDP command
*/
static int ice_xdp(struct net_device