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/mac.c | 1 +
drivers/net/wireless/ath/ath12k/wmi.c | 148 ++++++++++++++++++++
drivers/net/wireless/ath/ath12k/wmi.h | 66 +++++++++
drivers/net/wireless/ath/ath12k/wow.c | 191 ++++++++++++++++++++++++++
4 files changed, 406 insertions(+)
diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
index 56221100c430..e400a9a29e0e 100644
--- a/drivers/net/wireless/ath/ath12k/mac.c
+++ b/drivers/net/wireless/ath/ath12k/mac.c
@@ -6,6 +6,7 @@
#include <net/mac80211.h>
#include <linux/etherdevice.h>
+
#include "mac.h"
#include "core.h"
#include "debug.h"
diff --git a/drivers/net/wireless/ath/ath12k/wmi.c b/drivers/net/wireless/ath/ath12k/wmi.c
index be9cf360262c..aa920af4310a 100644
--- a/drivers/net/wireless/ath/ath12k/wmi.c
+++ b/drivers/net/wireless/ath/ath12k/wmi.c
@@ -7781,3 +7781,151 @@ 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 wmi_arp_ns_offload_arg *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 wmi_arp_ns_offload_arg *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,
+ struct wmi_arp_ns_offload_arg *offload,
+ bool enable)
+{
+ 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;
+
+ 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 477e2a37eb9c..0542d599d33d 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.
@@ -5316,6 +5317,66 @@ struct wmi_hw_data_filter_arg {
u32 hw_filter_bitmap;
};
+#define WMI_IPV6_UC_TYPE 0
+#define WMI_IPV6_AC_TYPE 1
+
+#define WMI_IPV6_MAX_COUNT 16
+#define WMI_IPV4_MAX_COUNT 2
+
+struct wmi_arp_ns_offload_arg {
+ u8 ipv4_addr[WMI_IPV4_MAX_COUNT][4];
+ u32 ipv4_count;
+ u32 ipv6_count;
+ u8 ipv6_addr[WMI_IPV6_MAX_COUNT][16];
+ u8 self_ipv6_addr[WMI_IPV6_MAX_COUNT][16];
+ u8 ipv6_type[WMI_IPV6_MAX_COUNT];
+ bool ipv6_valid[WMI_IPV6_MAX_COUNT];
+ u8 mac_addr[ETH_ALEN];
+};
+
+#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,
@@ -5481,4 +5542,9 @@ 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,
+ struct wmi_arp_ns_offload_arg *offload,
+ bool enable);
+
#endif
diff --git a/drivers/net/wireless/ath/ath12k/wow.c b/drivers/net/wireless/ath/ath12k/wow.c
index 77658a01bb41..39092f71b6a2 100644
--- a/drivers/net/wireless/ath/ath12k/wow.c
+++ b/drivers/net/wireless/ath/ath12k/wow.c
@@ -5,6 +5,10 @@
*/
#include <linux/delay.h>
+#include <linux/inetdevice.h>
+#include <net/addrconf.h>
+#include <net/if_inet6.h>
+#include <net/ipv6.h>
#include "mac.h"
@@ -591,6 +595,179 @@ static int ath12k_wow_clear_hw_filter(struct ath12k *ar)
return 0;
}
+static void ath12k_wow_generate_ns_mc_addr(struct ath12k_base *ab,
+ struct wmi_arp_ns_offload_arg *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(ab, ATH12K_DBG_WOW, "NS solicited addr %pI6\n",
+ offload->self_ipv6_addr[i]);
+ }
+}
+
+static void ath12k_wow_prepare_ns_offload(struct ath12k_vif *arvif,
+ struct wmi_arp_ns_offload_arg *offload)
+{
+ struct net_device *ndev = ieee80211_vif_to_wdev(arvif->vif)->netdev;
+ struct ath12k_base *ab = arvif->ar->ab;
+ struct inet6_ifaddr *ifa6;
+ struct ifacaddr6 *ifaca6;
+ struct inet6_dev *idev;
+ u32 count = 0, scope;
+
+ if (!ndev)
+ return;
+
+ idev = in6_dev_get(ndev);
+ if (!idev)
+ return;
+
+ ath12k_dbg(ab, ATH12K_DBG_WOW, "wow prepare ns offload\n");
+
+ read_lock_bh(&idev->lock);
+
+ /* get unicast address */
+ list_for_each_entry(ifa6, &idev->addr_list, if_list) {
+ if (count >= WMI_IPV6_MAX_COUNT)
+ goto unlock;
+
+ 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(ab, ATH12K_DBG_WOW,
+ "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] = WMI_IPV6_UC_TYPE;
+ ath12k_dbg(ab, ATH12K_DBG_WOW, "mac count %d ipv6 uc %pI6 scope %d\n",
+ count, offload->ipv6_addr[count],
+ scope);
+ count++;
+ }
+
+ /* get anycast address */
+ rcu_read_lock();
+
+ for (ifaca6 = rcu_dereference(idev->ac_list); ifaca6;
+ ifaca6 = rcu_dereference(ifaca6->aca_next)) {
+ if (count >= WMI_IPV6_MAX_COUNT) {
+ rcu_read_unlock();
+ goto unlock;
+ }
+
+ scope = ipv6_addr_src_scope(&ifaca6->aca_addr);
+ if (scope != IPV6_ADDR_SCOPE_LINKLOCAL &&
+ scope != IPV6_ADDR_SCOPE_GLOBAL) {
+ ath12k_dbg(ab, ATH12K_DBG_WOW,
+ "Unsupported ipv scope: %d\n", scope);
+ continue;
+ }
+
+ memcpy(offload->ipv6_addr[count], &ifaca6->aca_addr,
+ sizeof(ifaca6->aca_addr));
+ offload->ipv6_type[count] = WMI_IPV6_AC_TYPE;
+ ath12k_dbg(ab, ATH12K_DBG_WOW, "mac count %d ipv6 ac %pI6 scope %d\n",
+ count, offload->ipv6_addr[count],
+ scope);
+ count++;
+ }
+
+ rcu_read_unlock();
+
+unlock:
+ read_unlock_bh(&idev->lock);
+
+ in6_dev_put(idev);
+
+ offload->ipv6_count = count;
+ ath12k_wow_generate_ns_mc_addr(ab, offload);
+}
+
+static void ath12k_wow_prepare_arp_offload(struct ath12k_vif *arvif,
+ struct wmi_arp_ns_offload_arg *offload)
+{
+ struct ieee80211_vif *vif = arvif->vif;
+ struct ieee80211_vif_cfg vif_cfg = vif->cfg;
+ struct ath12k_base *ab = arvif->ar->ab;
+ u32 ipv4_cnt;
+
+ ath12k_dbg(ab, ATH12K_DBG_WOW, "wow prepare arp offload\n");
+
+ ipv4_cnt = min(vif_cfg.arp_addr_cnt, WMI_IPV4_MAX_COUNT);
+ memcpy(offload->ipv4_addr, vif_cfg.arp_addr_list, ipv4_cnt * sizeof(u32));
+ offload->ipv4_count = ipv4_cnt;
+
+ ath12k_dbg(ab, ATH12K_DBG_WOW,
+ "wow arp_addr_cnt %d vif->addr %pM, offload_addr %pI4\n",
+ vif_cfg.arp_addr_cnt, vif->addr, offload->ipv4_addr);
+}
+
+static int ath12k_wow_arp_ns_offload(struct ath12k *ar, bool enable)
+{
+ struct wmi_arp_ns_offload_arg *offload;
+ struct ath12k_vif *arvif;
+ int ret;
+
+ lockdep_assert_held(&ar->conf_mutex);
+
+ offload = kmalloc(sizeof(*offload), GFP_KERNEL);
+ if (!offload)
+ return -ENOMEM;
+
+ list_for_each_entry(arvif, &ar->arvifs, list) {
+ if (arvif->vdev_type != WMI_VDEV_TYPE_STA)
+ continue;
+
+ memset(offload, 0, sizeof(*offload));
+
+ memcpy(offload->mac_addr, arvif->vif->addr, ETH_ALEN);
+ ath12k_wow_prepare_ns_offload(arvif, offload);
+ ath12k_wow_prepare_arp_offload(arvif, offload);
+
+ ret = ath12k_wmi_arp_ns_offload(ar, arvif, offload, 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;
+ }
+ }
+
+ kfree(offload);
+
+ 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 +791,13 @@ 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;
+ }
+
ret = ath12k_mac_wait_tx_complete(ar);
if (ret) {
ath12k_warn(ar->ab, "failed to wait tx complete: %d\n", ret);
@@ -700,6 +884,13 @@ 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
