ath10k: implement sta keepalive command

New wmi-tlv firmware for qca6174 has STA keepalive
service available. The service can provide
automatic idle connection polling via NullFunc
frames to AP when acting as a client.

Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

4 files changed, 82 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath10k/wmi-ops.h b/drivers/net/wireless/ath/ath10k/wmi-ops.h
index 987414abc443..058f88b6ff53 100644
--- a/drivers/net/wireless/ath/ath10k/wmi-ops.h
+++ b/drivers/net/wireless/ath/ath10k/wmi-ops.h
@@ -143,6 +143,8 @@ struct wmi_ops {
                                               const u8 peer_addr[ETH_ALEN],
                                               const struct wmi_sta_uapsd_auto_trig_arg *args,
                                               u32 num_ac);
+        struct sk_buff *(*gen_sta_keepalive)(struct ath10k *ar,
+                                             const struct wmi_sta_keepalive_arg *arg);
 };
 
 int ath10k_wmi_cmd_send(struct ath10k *ar, struct sk_buff *skb, u32 cmd_id);
@@ -1034,4 +1036,22 @@ ath10k_wmi_p2p_go_bcn_ie(struct ath10k *ar, u32 vdev_id, const u8 *p2p_ie)
         return ath10k_wmi_cmd_send(ar, skb, ar->wmi.cmd->p2p_go_set_beacon_ie);
 }
 
+static inline int
+ath10k_wmi_sta_keepalive(struct ath10k *ar,
+                         const struct wmi_sta_keepalive_arg *arg)
+{
+        struct sk_buff *skb;
+        u32 cmd_id;
+
+        if (!ar->wmi.ops->gen_sta_keepalive)
+                return -EOPNOTSUPP;
+
+        skb = ar->wmi.ops->gen_sta_keepalive(ar, arg);
+        if (IS_ERR(skb))
+                return PTR_ERR(skb);
+
+        cmd_id = ar->wmi.cmd->sta_keepalive_cmd;
+        return ath10k_wmi_cmd_send(ar, skb, cmd_id);
+}
+
 #endif
diff --git a/drivers/net/wireless/ath/ath10k/wmi-tlv.c b/drivers/net/wireless/ath/ath10k/wmi-tlv.c
index 00ca544bc94d..be32db96701f 100644
--- a/drivers/net/wireless/ath/ath10k/wmi-tlv.c
+++ b/drivers/net/wireless/ath/ath10k/wmi-tlv.c
@@ -1636,6 +1636,50 @@ ath10k_wmi_tlv_op_gen_vdev_wmm_conf(struct ath10k *ar, u32 vdev_id,
 }
 
 static struct sk_buff *
+ath10k_wmi_tlv_op_gen_sta_keepalive(struct ath10k *ar,
+                                    const struct wmi_sta_keepalive_arg *arg)
+{
+        struct wmi_tlv_sta_keepalive_cmd *cmd;
+        struct wmi_sta_keepalive_arp_resp *arp;
+        struct sk_buff *skb;
+        struct wmi_tlv *tlv;
+        void *ptr;
+        size_t len;
+
+        len = sizeof(*tlv) + sizeof(*cmd) +
+              sizeof(*tlv) + sizeof(*arp);
+        skb = ath10k_wmi_alloc_skb(ar, len);
+        if (!skb)
+                return ERR_PTR(-ENOMEM);
+
+        ptr = (void *)skb->data;
+        tlv = ptr;
+        tlv->tag = __cpu_to_le16(WMI_TLV_TAG_STRUCT_STA_KEEPALIVE_CMD);
+        tlv->len = __cpu_to_le16(sizeof(*cmd));
+        cmd = (void *)tlv->value;
+        cmd->vdev_id = __cpu_to_le32(arg->vdev_id);
+        cmd->enabled = __cpu_to_le32(arg->enabled);
+        cmd->method = __cpu_to_le32(arg->method);
+        cmd->interval = __cpu_to_le32(arg->interval);
+
+        ptr += sizeof(*tlv);
+        ptr += sizeof(*cmd);
+
+        tlv = ptr;
+        tlv->tag = __cpu_to_le16(WMI_TLV_TAG_STRUCT_STA_KEEPALVE_ARP_RESPONSE);
+        tlv->len = __cpu_to_le16(sizeof(*arp));
+        arp = (void *)tlv->value;
+
+        arp->src_ip4_addr = arg->src_ip4_addr;
+        arp->dest_ip4_addr = arg->dest_ip4_addr;
+        ether_addr_copy(arp->dest_mac_addr.addr, arg->dest_mac_addr);
+
+        ath10k_dbg(ar, ATH10K_DBG_WMI, "wmi tlv sta keepalive vdev %d enabled %d method %d inverval %d\n",
+                   arg->vdev_id, arg->enabled, arg->method, arg->interval);
+        return skb;
+}
+
+static struct sk_buff *
 ath10k_wmi_tlv_op_gen_peer_create(struct ath10k *ar, u32 vdev_id,
                                   const u8 peer_addr[ETH_ALEN])
 {
@@ -2634,6 +2678,7 @@ static const struct wmi_ops wmi_tlv_ops = {
         .gen_prb_tmpl = ath10k_wmi_tlv_op_gen_prb_tmpl,
         .gen_p2p_go_bcn_ie = ath10k_wmi_tlv_op_gen_p2p_go_bcn_ie,
         .gen_vdev_sta_uapsd = ath10k_wmi_tlv_op_gen_vdev_sta_uapsd,
+        .gen_sta_keepalive = ath10k_wmi_tlv_op_gen_sta_keepalive,
 };
 
 /************/
diff --git a/drivers/net/wireless/ath/ath10k/wmi-tlv.h b/drivers/net/wireless/ath/ath10k/wmi-tlv.h
index 3dc43b90469d..de68fe76eae6 100644
--- a/drivers/net/wireless/ath/ath10k/wmi-tlv.h
+++ b/drivers/net/wireless/ath/ath10k/wmi-tlv.h
@@ -1432,6 +1432,13 @@ struct wmi_tlv_diag_data_ev {
         __le32 num_items;
 } __packed;
 
+struct wmi_tlv_sta_keepalive_cmd {
+        __le32 vdev_id;
+        __le32 enabled;
+        __le32 method; /* WMI_STA_KEEPALIVE_METHOD_ */
+        __le32 interval; /* in seconds */
+} __packed;
+
 void ath10k_wmi_tlv_attach(struct ath10k *ar);
 
 #endif
diff --git a/drivers/net/wireless/ath/ath10k/wmi.h b/drivers/net/wireless/ath/ath10k/wmi.h
index 3c48e0d21900..1a99a7dd0e95 100644
--- a/drivers/net/wireless/ath/ath10k/wmi.h
+++ b/drivers/net/wireless/ath/ath10k/wmi.h
@@ -4680,6 +4680,16 @@ struct wmi_sta_keepalive_cmd {
         struct wmi_sta_keepalive_arp_resp arp_resp;
 } __packed;
 
+struct wmi_sta_keepalive_arg {
+        u32 vdev_id;
+        u32 enabled;
+        u32 method;
+        u32 interval;
+        __be32 src_ip4_addr;
+        __be32 dest_ip4_addr;
+        const u8 dest_mac_addr[ETH_ALEN];
+};
+
 enum wmi_force_fw_hang_type {
         WMI_FORCE_FW_HANG_ASSERT = 1,
         WMI_FORCE_FW_HANG_NO_DETECT,