Support ARP and NS offload in WoW state.
Tested this way: put machine A with QCA6390 to WoW state,
ping/ping6 machine A from another machine B, check sniffer to see
any ARP response and Neighbor Advertisement from machine A.
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0-03427-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.15378.4
Signed-off-by: Baochen Qiang <quic_bqiang@xxxxxxxxxxx>
---
drivers/net/wireless/ath/ath12k/core.h | 18 +++
drivers/net/wireless/ath/ath12k/mac.c | 157 ++++++++++++++++++++++++-
drivers/net/wireless/ath/ath12k/wmi.c | 151 ++++++++++++++++++++++++
drivers/net/wireless/ath/ath12k/wmi.h | 47 ++++++++
drivers/net/wireless/ath/ath12k/wow.c | 51 ++++++++
5 files changed, 423 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/ath/ath12k/core.h b/drivers/net/wireless/ath/ath12k/core.h
index acd4db7daafb..6ab1a2962ff4 100644
--- a/drivers/net/wireless/ath/ath12k/core.h
+++ b/drivers/net/wireless/ath/ath12k/core.h
@@ -231,6 +231,23 @@ struct ath12k_vif_cache {
u32 bss_conf_changed;
};
+#define ATH12K_IPV6_UC_TYPE 0
+#define ATH12K_IPV6_AC_TYPE 1
+
+#define ATH12K_IPV6_MAX_COUNT 16
+#define ATH12K_IPV4_MAX_COUNT 2
+
+struct ath12k_arp_ns_offload {
+ u8 ipv4_addr[ATH12K_IPV4_MAX_COUNT][4];
+ u32 ipv4_count;
+ u32 ipv6_count;
+ u8 ipv6_addr[ATH12K_IPV6_MAX_COUNT][16];
+ u8 self_ipv6_addr[ATH12K_IPV6_MAX_COUNT][16];
+ u8 ipv6_type[ATH12K_IPV6_MAX_COUNT];
+ bool ipv6_valid[ATH12K_IPV6_MAX_COUNT];
+ u8 mac_addr[ETH_ALEN];
+};
+
struct ath12k_vif {
u32 vdev_id;
enum wmi_vdev_type vdev_type;
@@ -287,6 +304,7 @@ struct ath12k_vif {
u32 punct_bitmap;
bool ps;
struct ath12k_vif_cache *cache;
+ struct ath12k_arp_ns_offload *arp_ns_offload;
};
struct ath12k_vif_iter {
diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
index 37d4b72df4c5..7a9b75adae60 100644
--- a/drivers/net/wireless/ath/ath12k/mac.c
+++ b/drivers/net/wireless/ath/ath12k/mac.c
@@ -4,8 +4,13 @@
* Copyright (c) 2021-2024 Qualcomm Innovation Center, Inc. All rights reserved.
*/
-#include <net/mac80211.h>
+#include <linux/bitfield.h>
#include <linux/etherdevice.h>
+#include <linux/inetdevice.h>
+#include <net/if_inet6.h>
+#include <net/ipv6.h>
+#include <net/mac80211.h>
+
#include "mac.h"
#include "core.h"
#include "debug.h"
@@ -2801,6 +2806,22 @@ static void ath12k_mac_vif_setup_ps(struct ath12k_vif *arvif)
psmode, arvif->vdev_id, ret);
}
+static struct ath12k_arp_ns_offload *
+ath12k_mac_arvif_get_arp_ns_offload(struct ath12k_vif *arvif)
+{
+ if (!arvif->arp_ns_offload)
+ arvif->arp_ns_offload = kzalloc(sizeof(*arvif->arp_ns_offload),
+ GFP_KERNEL);
+
+ return arvif->arp_ns_offload;
+}
+
+static void ath12k_mac_arvif_put_arp_ns_offload(struct ath12k_vif *arvif)
+{
+ kfree(arvif->arp_ns_offload);
+ arvif->arp_ns_offload = NULL;
+}
+
static void ath12k_mac_bss_info_changed(struct ath12k *ar,
struct ath12k_vif *arvif,
struct ieee80211_bss_conf *info,
@@ -2808,11 +2829,13 @@ static void ath12k_mac_bss_info_changed(struct ath12k *ar,
{
struct ieee80211_vif *vif = arvif->vif;
struct ieee80211_vif_cfg *vif_cfg = &vif->cfg;
+ struct ath12k_arp_ns_offload *offload;
struct cfg80211_chan_def def;
u32 param_id, param_value;
enum nl80211_band band;
u32 vdev_param;
int mcast_rate;
+ u32 ipv4_cnt;
u32 preamble;
u16 hw_value;
u16 bitrate;
@@ -3083,6 +3106,25 @@ static void ath12k_mac_bss_info_changed(struct ath12k *ar,
arvif->ps = vif_cfg->ps;
ath12k_mac_vif_setup_ps(arvif);
}
+
+ if (changed & BSS_CHANGED_ARP_FILTER) {
+ offload = ath12k_mac_arvif_get_arp_ns_offload(arvif);
+ if (offload) {
+ ipv4_cnt = min(vif_cfg->arp_addr_cnt, ATH12K_IPV4_MAX_COUNT);
+ memcpy(offload->ipv4_addr, vif_cfg->arp_addr_list,
+ ipv4_cnt * sizeof(u32));
+ memcpy(offload->mac_addr, vif->addr, ETH_ALEN);
+ offload->ipv4_count = ipv4_cnt;
+
+ ath12k_dbg(ar->ab, ATH12K_DBG_MAC,
+ "mac arp_addr_cnt %d vif->addr %pM, offload_addr %pI4\n",
+ vif_cfg->arp_addr_cnt,
+ vif->addr, offload->ipv4_addr);
+ } else {
+ ath12k_warn(ar->ab, "failed to get arp ns offload for vdev %u\n",
+ arvif->vdev_id);
+ }
+ }
}
static struct ath12k_vif_cache *ath12k_arvif_get_cache(struct ath12k_vif *arvif)
@@ -6528,6 +6570,8 @@ static void ath12k_mac_op_remove_interface(struct ieee80211_hw *hw,
struct ath12k *ar;
int ret;
+ ath12k_mac_arvif_put_arp_ns_offload(arvif);
+
if (!arvif->is_created) {
/* if we cached some config but never received assign chanctx,
* free the allocated cache.
@@ -8214,6 +8258,113 @@ static int ath12k_mac_op_remain_on_channel(struct ieee80211_hw *hw,
return ret;
}
+static void ath12k_mac_generate_ns_mc_addr(struct ath12k *ar,
+ struct ath12k_arp_ns_offload *offload)
+{
+ int i;
+
+ for (i = 0; i < offload->ipv6_count; i++) {
+ offload->self_ipv6_addr[i][0] = 0xff;
+ offload->self_ipv6_addr[i][1] = 0x02;
+ offload->self_ipv6_addr[i][11] = 0x01;
+ offload->self_ipv6_addr[i][12] = 0xff;
+ offload->self_ipv6_addr[i][13] =
+ offload->ipv6_addr[i][13];
+ offload->self_ipv6_addr[i][14] =
+ offload->ipv6_addr[i][14];
+ offload->self_ipv6_addr[i][15] =
+ offload->ipv6_addr[i][15];
+ ath12k_dbg(ar->ab, ATH12K_DBG_MAC, "NS solicited addr %pI6\n",
+ offload->self_ipv6_addr[i]);
+ }
+}
+
+static __maybe_unused void ath12k_mac_op_ipv6_changed(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct inet6_dev *idev)
+{
+ struct ath12k_vif *arvif = ath12k_vif_to_arvif(vif);
+ struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
+ struct ath12k *ar = ath12k_ah_to_ar(ah, 0);
+ struct ath12k_arp_ns_offload *offload;
+ struct inet6_ifaddr *ifa6;
+ struct ifacaddr6 *ifaca6;
+ struct list_head *p;
+ u32 count, scope;
+
+ ath12k_dbg(ar->ab, ATH12K_DBG_MAC, "mac op ipv6 changed\n");
+
+ offload = ath12k_mac_arvif_get_arp_ns_offload(arvif);
+ if (!offload) {
+ ath12k_warn(ar->ab, "failed to get arp ns offload for vdev %u\n",
+ arvif->vdev_id);
+ return;
+ }
+
+ count = 0;
+
+ memset(offload->ipv6_addr, 0, sizeof(offload->ipv6_addr));
+ memset(offload->self_ipv6_addr, 0, sizeof(offload->self_ipv6_addr));
+ memcpy(offload->mac_addr, vif->addr, ETH_ALEN);
+
+ read_lock_bh(&idev->lock);
+
+ /* get unicast address */
+ list_for_each(p, &idev->addr_list) {
+ if (count >= ATH12K_IPV6_MAX_COUNT)
+ goto unlock;
+
+ ifa6 = list_entry(p, struct inet6_ifaddr, if_list);
+ if (ifa6->flags & IFA_F_DADFAILED)
+ continue;
+
+ scope = ipv6_addr_src_scope(&ifa6->addr);
+ if (scope != IPV6_ADDR_SCOPE_LINKLOCAL &&
+ scope != IPV6_ADDR_SCOPE_GLOBAL) {
+ ath12k_dbg(ar->ab, ATH12K_DBG_MAC,
+ "Unsupported ipv6 scope: %d\n", scope);
+ continue;
+ }
+
+ memcpy(offload->ipv6_addr[count], &ifa6->addr.s6_addr,
+ sizeof(ifa6->addr.s6_addr));
+ offload->ipv6_type[count] = ATH12K_IPV6_UC_TYPE;
+ ath12k_dbg(ar->ab, ATH12K_DBG_MAC, "mac count %d ipv6 uc %pI6 scope %d\n",
+ count, offload->ipv6_addr[count],
+ scope);
+ count++;
+ }
+
+ /* get anycast address */
+ for (ifaca6 = rcu_dereference(idev->ac_list); ifaca6;
+ ifaca6 = rcu_dereference(ifaca6->aca_next)) {
+ if (count >= ATH12K_IPV6_MAX_COUNT)
+ goto unlock;
+
+ scope = ipv6_addr_src_scope(&ifaca6->aca_addr);
+ if (scope != IPV6_ADDR_SCOPE_LINKLOCAL &&
+ scope != IPV6_ADDR_SCOPE_GLOBAL) {
+ ath12k_dbg(ar->ab, ATH12K_DBG_MAC,
+ "Unsupported ipv scope: %d\n", scope);
+ continue;
+ }
+
+ memcpy(offload->ipv6_addr[count], &ifaca6->aca_addr,
+ sizeof(ifaca6->aca_addr));
+ offload->ipv6_type[count] = ATH12K_IPV6_AC_TYPE;
+ ath12k_dbg(ar->ab, ATH12K_DBG_MAC, "mac count %d ipv6 ac %pI6 scope %d\n",
+ count, offload->ipv6_addr[count],
+ scope);
+ count++;
+ }
+
+unlock:
+ read_unlock_bh(&idev->lock);
+
+ offload->ipv6_count = count;
+ ath12k_mac_generate_ns_mc_addr(ar, offload);
+}
+
static const struct ieee80211_ops ath12k_ops = {
.tx = ath12k_mac_op_tx,
.wake_tx_queue = ieee80211_handle_wake_tx_queue,
@@ -8256,6 +8407,10 @@ static const struct ieee80211_ops ath12k_ops = {
.resume = ath12k_wow_op_resume,
.set_wakeup = ath12k_wow_op_set_wakeup,
#endif
+
+#if IS_ENABLED(CONFIG_IPV6)
+ .ipv6_addr_change = ath12k_mac_op_ipv6_changed,
+#endif
};
static void ath12k_mac_update_ch_list(struct ath12k *ar,
diff --git a/drivers/net/wireless/ath/ath12k/wmi.c b/drivers/net/wireless/ath/ath12k/wmi.c
index b59949cc1a93..6e4e02640198 100644
--- a/drivers/net/wireless/ath/ath12k/wmi.c
+++ b/drivers/net/wireless/ath/ath12k/wmi.c
@@ -7750,3 +7750,154 @@ int ath12k_wmi_wow_config_pno(struct ath12k *ar, u32 vdev_id,
return ath12k_wmi_cmd_send(ar->wmi, skb, WMI_NETWORK_LIST_OFFLOAD_CONFIG_CMDID);
}
+
+static void ath12k_wmi_fill_ns_offload(struct ath12k *ar,
+ struct ath12k_arp_ns_offload *offload,
+ void **ptr,
+ bool enable,
+ bool ext)
+{
+ struct wmi_ns_offload_params *ns;
+ struct wmi_tlv *tlv;
+ void *buf_ptr = *ptr;
+ u32 ns_cnt, ns_ext_tuples;
+ int i, max_offloads;
+
+ ns_cnt = offload->ipv6_count;
+
+ tlv = buf_ptr;
+
+ if (ext) {
+ ns_ext_tuples = offload->ipv6_count - WMI_MAX_NS_OFFLOADS;
+ tlv->header = ath12k_wmi_tlv_hdr(WMI_TAG_ARRAY_STRUCT,
+ ns_ext_tuples * sizeof(*ns));
+ i = WMI_MAX_NS_OFFLOADS;
+ max_offloads = offload->ipv6_count;
+ } else {
+ tlv->header = ath12k_wmi_tlv_hdr(WMI_TAG_ARRAY_STRUCT,
+ WMI_MAX_NS_OFFLOADS * sizeof(*ns));
+ i = 0;
+ max_offloads = WMI_MAX_NS_OFFLOADS;
+ }
+
+ buf_ptr += sizeof(*tlv);
+
+ for (; i < max_offloads; i++) {
+ ns = buf_ptr;
+ ns->tlv_header = ath12k_wmi_tlv_cmd_hdr(WMI_TAG_NS_OFFLOAD_TUPLE,
+ sizeof(*ns));
+
+ if (enable) {
+ if (i < ns_cnt)
+ ns->flags |= cpu_to_le32(WMI_NSOL_FLAGS_VALID);
+
+ memcpy(ns->target_ipaddr[0], offload->ipv6_addr[i], 16);
+ memcpy(ns->solicitation_ipaddr, offload->self_ipv6_addr[i], 16);
+
+ if (offload->ipv6_type[i])
+ ns->flags |= cpu_to_le32(WMI_NSOL_FLAGS_IS_IPV6_ANYCAST);
+
+ memcpy(ns->target_mac.addr, offload->mac_addr, ETH_ALEN);
+
+ if (!is_zero_ether_addr(ns->target_mac.addr))
+ ns->flags |= cpu_to_le32(WMI_NSOL_FLAGS_MAC_VALID);
+
+ ath12k_dbg(ar->ab, ATH12K_DBG_WMI,
+ "wmi index %d ns_solicited %pI6 target %pI6",
+ i, ns->solicitation_ipaddr,
+ ns->target_ipaddr[0]);
+ }
+
+ buf_ptr += sizeof(*ns);
+ }
+
+ *ptr = buf_ptr;
+}
+
+static void ath12k_wmi_fill_arp_offload(struct ath12k *ar,
+ struct ath12k_arp_ns_offload *offload,
+ void **ptr,
+ bool enable)
+{
+ struct wmi_arp_offload_params *arp;
+ struct wmi_tlv *tlv;
+ void *buf_ptr = *ptr;
+ int i;
+
+ /* fill arp tuple */
+ tlv = buf_ptr;
+ tlv->header = ath12k_wmi_tlv_hdr(WMI_TAG_ARRAY_STRUCT,
+ WMI_MAX_ARP_OFFLOADS * sizeof(*arp));
+ buf_ptr += sizeof(*tlv);
+
+ for (i = 0; i < WMI_MAX_ARP_OFFLOADS; i++) {
+ arp = buf_ptr;
+ arp->tlv_header = ath12k_wmi_tlv_cmd_hdr(WMI_TAG_ARP_OFFLOAD_TUPLE,
+ sizeof(*arp));
+
+ if (enable && i < offload->ipv4_count) {
+ /* Copy the target ip addr and flags */
+ arp->flags = cpu_to_le32(WMI_ARPOL_FLAGS_VALID);
+ memcpy(arp->target_ipaddr, offload->ipv4_addr[i], 4);
+
+ ath12k_dbg(ar->ab, ATH12K_DBG_WMI, "wmi arp offload address %pI4",
+ arp->target_ipaddr);
+ }
+
+ buf_ptr += sizeof(*arp);
+ }
+
+ *ptr = buf_ptr;
+}
+
+int ath12k_wmi_arp_ns_offload(struct ath12k *ar,
+ struct ath12k_vif *arvif, bool enable)
+{
+ struct ath12k_arp_ns_offload *offload;
+ struct wmi_set_arp_ns_offload_cmd *cmd;
+ struct wmi_tlv *tlv;
+ struct sk_buff *skb;
+ void *buf_ptr;
+ size_t len;
+ u8 ns_cnt, ns_ext_tuples = 0;
+
+ offload = arvif->arp_ns_offload;
+ if (!offload)
+ return 0;
+
+ ns_cnt = offload->ipv6_count;
+
+ len = sizeof(*cmd) +
+ sizeof(*tlv) +
+ WMI_MAX_NS_OFFLOADS * sizeof(struct wmi_ns_offload_params) +
+ sizeof(*tlv) +
+ WMI_MAX_ARP_OFFLOADS * sizeof(struct wmi_arp_offload_params);
+
+ if (ns_cnt > WMI_MAX_NS_OFFLOADS) {
+ ns_ext_tuples = ns_cnt - WMI_MAX_NS_OFFLOADS;
+ len += sizeof(*tlv) +
+ ns_ext_tuples * sizeof(struct wmi_ns_offload_params);
+ }
+
+ skb = ath12k_wmi_alloc_skb(ar->wmi->wmi_ab, len);
+ if (!skb)
+ return -ENOMEM;
+
+ buf_ptr = skb->data;
+ cmd = buf_ptr;
+ cmd->tlv_header = ath12k_wmi_tlv_cmd_hdr(WMI_TAG_SET_ARP_NS_OFFLOAD_CMD,
+ sizeof(*cmd));
+ cmd->flags = cpu_to_le32(0);
+ cmd->vdev_id = cpu_to_le32(arvif->vdev_id);
+ cmd->num_ns_ext_tuples = cpu_to_le32(ns_ext_tuples);
+
+ buf_ptr += sizeof(*cmd);
+
+ ath12k_wmi_fill_ns_offload(ar, offload, &buf_ptr, enable, 0);
+ ath12k_wmi_fill_arp_offload(ar, offload, &buf_ptr, enable);
+
+ if (ns_ext_tuples)
+ ath12k_wmi_fill_ns_offload(ar, offload, &buf_ptr, enable, 1);
+
+ return ath12k_wmi_cmd_send(ar->wmi, skb, WMI_SET_ARP_NS_OFFLOAD_CMDID);
+}
diff --git a/drivers/net/wireless/ath/ath12k/wmi.h b/drivers/net/wireless/ath/ath12k/wmi.h
index 96460116c072..57707b741f80 100644
--- a/drivers/net/wireless/ath/ath12k/wmi.h
+++ b/drivers/net/wireless/ath/ath12k/wmi.h
@@ -24,6 +24,7 @@
struct ath12k_base;
struct ath12k;
+struct ath12k_vif;
/* There is no signed version of __le32, so for a temporary solution come
* up with our own version. The idea is from fs/ntfs/endian.h.
@@ -5282,6 +5283,49 @@ struct wmi_hw_data_filter_arg {
u32 hw_filter_bitmap;
};
+#define WMI_MAX_NS_OFFLOADS 2
+#define WMI_MAX_ARP_OFFLOADS 2
+
+#define WMI_ARPOL_FLAGS_VALID BIT(0)
+#define WMI_ARPOL_FLAGS_MAC_VALID BIT(1)
+#define WMI_ARPOL_FLAGS_REMOTE_IP_VALID BIT(2)
+
+struct wmi_arp_offload_params {
+ __le32 tlv_header;
+ __le32 flags;
+ u8 target_ipaddr[4];
+ u8 remote_ipaddr[4];
+ struct ath12k_wmi_mac_addr_params target_mac;
+} __packed;
+
+#define WMI_NSOL_FLAGS_VALID BIT(0)
+#define WMI_NSOL_FLAGS_MAC_VALID BIT(1)
+#define WMI_NSOL_FLAGS_REMOTE_IP_VALID BIT(2)
+#define WMI_NSOL_FLAGS_IS_IPV6_ANYCAST BIT(3)
+
+#define WMI_NSOL_MAX_TARGET_IPS 2
+
+struct wmi_ns_offload_params {
+ __le32 tlv_header;
+ __le32 flags;
+ u8 target_ipaddr[WMI_NSOL_MAX_TARGET_IPS][16];
+ u8 solicitation_ipaddr[16];
+ u8 remote_ipaddr[16];
+ struct ath12k_wmi_mac_addr_params target_mac;
+} __packed;
+
+struct wmi_set_arp_ns_offload_cmd {
+ __le32 tlv_header;
+ __le32 flags;
+ __le32 vdev_id;
+ __le32 num_ns_ext_tuples;
+ /* The TLVs follow:
+ * wmi_ns_offload_params ns[WMI_MAX_NS_OFFLOADS];
+ * wmi_arp_offload_params arp[WMI_MAX_ARP_OFFLOADS];
+ * wmi_ns_offload_params ns_ext[num_ns_ext_tuples];
+ */
+} __packed;
+
void ath12k_wmi_init_qcn9274(struct ath12k_base *ab,
struct ath12k_wmi_resource_config_arg *config);
void ath12k_wmi_init_wcn7850(struct ath12k_base *ab,
@@ -5447,4 +5491,7 @@ int ath12k_wmi_wow_config_pno(struct ath12k *ar, u32 vdev_id,
struct wmi_pno_scan_req_arg *pno_scan);
int ath12k_wmi_hw_data_filter_cmd(struct ath12k *ar,
struct wmi_hw_data_filter_arg *arg);
+int ath12k_wmi_arp_ns_offload(struct ath12k *ar,
+ struct ath12k_vif *arvif, bool enable);
+
#endif
diff --git a/drivers/net/wireless/ath/ath12k/wow.c b/drivers/net/wireless/ath/ath12k/wow.c
index 968bd884687f..d15e1a5ee8c4 100644
--- a/drivers/net/wireless/ath/ath12k/wow.c
+++ b/drivers/net/wireless/ath/ath12k/wow.c
@@ -591,6 +591,42 @@ static int ath12k_wow_clear_hw_filter(struct ath12k *ar)
return 0;
}
+static int ath12k_wow_arp_ns_offload(struct ath12k *ar, bool enable)
+{
+ struct ath12k_vif *arvif;
+ int ret;
+
+ lockdep_assert_held(&ar->conf_mutex);
+
+ list_for_each_entry(arvif, &ar->arvifs, list) {
+ if (arvif->vdev_type != WMI_VDEV_TYPE_STA)
+ continue;
+
+ ret = ath12k_wmi_arp_ns_offload(ar, arvif, enable);
+ if (ret) {
+ ath12k_warn(ar->ab, "failed to set arp ns offload vdev %i: enable %d, ret %d\n",
+ arvif->vdev_id, enable, ret);
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static int ath12k_wow_protocol_offload(struct ath12k *ar, bool enable)
+{
+ int ret;
+
+ ret = ath12k_wow_arp_ns_offload(ar, enable);
+ if (ret) {
+ ath12k_warn(ar->ab, "failed to offload ARP and NS %d %d\n",
+ enable, ret);
+ return ret;
+ }
+
+ return 0;
+}
+
int ath12k_wow_op_suspend(struct ieee80211_hw *hw,
struct cfg80211_wowlan *wowlan)
{
@@ -614,6 +650,14 @@ int ath12k_wow_op_suspend(struct ieee80211_hw *hw,
goto cleanup;
}
+ ret = ath12k_wow_protocol_offload(ar, true);
+ if (ret) {
+ ath12k_warn(ar->ab, "failed to set wow protocol offload events: %d\n",
+ ret);
+ goto cleanup;
+ }
+
+ ath12k_mac_drain_tx(ar);
ret = ath12k_mac_wait_tx_complete(ar);
if (ret) {
ath12k_warn(ar->ab, "failed to wait tx complete: %d\n", ret);
@@ -700,6 +744,13 @@ int ath12k_wow_op_resume(struct ieee80211_hw *hw)
goto exit;
}
+ ret = ath12k_wow_protocol_offload(ar, false);
+ if (ret) {
+ ath12k_warn(ar->ab, "failed to clear wow protocol offload events: %d\n",
+ ret);
+ goto exit;
+ }
+
exit:
if (ret) {
switch (ah->state) {
--
2.25.1
