@@ -3501,6 +3501,9 @@ struct cfg80211_update_owe_info {
* @update_owe_info: Provide updated OWE info to driver. Driver implementing SME
* but offloading OWE processing to the user space will get the updated
* DH IE through this interface.
+ *
+ * @probe_mesh_link: Probe direct Mesh peer's link quality by sending data frame
+ * and overrule HWMP path selection algorithm.
*/
struct cfg80211_ops {
int (*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow);
@@ -3817,6 +3820,8 @@ struct cfg80211_ops {
struct cfg80211_pmsr_request *request);
int (*update_owe_info)(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_update_owe_info *owe_info);
+ int (*probe_mesh_link)(struct wiphy *wiphy, struct net_device *dev,
+ const u8 *buf, size_t len);
};
/*
@@ -1070,6 +1070,21 @@
* OWE AKM by the host drivers that implement SME but rely
* on the user space for the cryptographic/DH IE processing in AP mode.
*
+ * @NL80211_CMD_PROBE_MESH_LINK: The requirement for mesh link metric
+ * refreshing, is that from one mesh point we be able to send some data
+ * frames to other mesh points which are not currently selected as a
+ * primary traffic path, but which are only 1 hop away. The absence of
+ * the primary path to the chosen node makes it necessary to apply some
+ * form of marking on a chosen packet stream so that the packets can be
+ * properly steered to the selected node for testing, and not by the
+ * regular mesh path lookup. Further, the packets must be of type data
+ * so that the rate control (often embedded in firmware) is used for
+ * rate selection.
+ *
+ * Here attribute %NL80211_ATTR_MAC is used to specify connected mesh
+ * peer MAC address and %NL80211_ATTR_FRAME is used to specify the frame
+ * content. The frame is ethernet data.
+ *
* @NL80211_CMD_MAX: highest used command number
* @__NL80211_CMD_AFTER_LAST: internal use
*/
@@ -1292,6 +1307,8 @@ enum nl80211_commands {
NL80211_CMD_UPDATE_OWE_INFO,
+ NL80211_CMD_PROBE_MESH_LINK,
+
/* add new commands above here */
/* used to define NL80211_CMD_MAX below */
@@ -13405,6 +13405,52 @@ static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
return rdev_update_owe_info(rdev, dev, &owe_info);
}
+static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
+{
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
+ struct wireless_dev *wdev = dev->ieee80211_ptr;
+ struct station_info sinfo = {};
+ const u8 *buf;
+ size_t len;
+ u8 *dest;
+ int err;
+
+ if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
+ return -EOPNOTSUPP;
+
+ if (!info->attrs[NL80211_ATTR_MAC] ||
+ !info->attrs[NL80211_ATTR_FRAME]) {
+ GENL_SET_ERR_MSG(info, "Frame or MAC missing");
+ return -EINVAL;
+ }
+
+ wdev_lock(wdev);
+ if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
+ wdev_unlock(wdev);
+ err = -EOPNOTSUPP;
+ return err;
+ }
+ wdev_unlock(wdev);
+
+ dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
+ buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
+ len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
+
+ if (len < sizeof(struct ethhdr))
+ return -EINVAL;
+
+ if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
+ !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
+ return -EINVAL;
+
+ err = rdev_get_station(rdev, dev, dest, &sinfo);
+ if (err)
+ return err;
+
+ return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
+}
+
#define NL80211_FLAG_NEED_WIPHY 0x01
#define NL80211_FLAG_NEED_NETDEV 0x02
#define NL80211_FLAG_NEED_RTNL 0x04
@@ -14242,6 +14288,13 @@ static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
+ {
+ .cmd = NL80211_CMD_PROBE_MESH_LINK,
+ .doit = nl80211_probe_mesh_link,
+ .flags = GENL_UNS_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
+ NL80211_FLAG_NEED_RTNL,
+ },
};
static struct genl_family nl80211_fam __ro_after_init = {
@@ -1286,4 +1286,17 @@ static inline int rdev_update_owe_info(struct cfg80211_registered_device *rdev,
return ret;
}
+static inline int
+rdev_probe_mesh_link(struct cfg80211_registered_device *rdev,
+ struct net_device *dev, const u8 *dest,
+ const void *buf, size_t len)
+{
+ int ret;
+
+ trace_rdev_probe_mesh_link(&rdev->wiphy, dev, dest, buf, len);
+ ret = rdev->ops->probe_mesh_link(&rdev->wiphy, dev, buf, len);
+ trace_rdev_return_int(&rdev->wiphy, ret);
+ return ret;
+}
+
#endif /* __CFG80211_RDEV_OPS */
@@ -3421,6 +3421,24 @@
WIPHY_PR_ARG, NETDEV_PR_ARG, MAC_PR_ARG(peer))
);
+TRACE_EVENT(rdev_probe_mesh_link,
+ TP_PROTO(struct wiphy *wiphy, struct net_device *netdev,
+ const u8 *dest, const u8 *buf, size_t len),
+ TP_ARGS(wiphy, netdev, dest, buf, len),
+ TP_STRUCT__entry(
+ WIPHY_ENTRY
+ NETDEV_ENTRY
+ MAC_ENTRY(dest)
+ ),
+ TP_fast_assign(
+ WIPHY_ASSIGN;
+ NETDEV_ASSIGN;
+ MAC_ASSIGN(dest, dest);
+ ),
+ TP_printk(WIPHY_PR_FMT ", " NETDEV_PR_FMT ", " MAC_PR_FMT,
+ WIPHY_PR_ARG, NETDEV_PR_ARG, MAC_PR_ARG(dest))
+);
+
#endif /* !__RDEV_OPS_TRACE || TRACE_HEADER_MULTI_READ */
#undef TRACE_INCLUDE_PATH