#define IEEE80211_MAX_MESH_ID_LEN 32
+#define IEEE80211_FIRST_TSPEC_TSID 8
#define IEEE80211_NUM_TIDS 16
+/* number of user priorities 802.11 uses */
+#define IEEE80211_NUM_UPS 8
+
#define IEEE80211_QOS_CTL_LEN 2
/* 1d tag mask */
#define IEEE80211_QOS_CTL_TAG1D_MASK 0x0007
* @set_ap_chanwidth: Set the AP (including P2P GO) mode channel width for the
* given interface This is used e.g. for dynamic HT 20/40 MHz channel width
* changes during the lifetime of the BSS.
+ *
+ * @add_tx_ts: validate (if admitted_time is 0) or add a TX TS to the device
+ * with the given parameters; action frame exchange has been handled by
+ * userspace so this just has to modify the TX path to take the TS into
+ * account.
+ * If the admitted time is 0 just validate the parameters to make sure
+ * the session can be created at all; it is valid to just always return
+ * success for that but that may result in inefficient behaviour (handshake
+ * with the peer followed by immediate teardown when the addition is later
+ * rejected)
+ * @del_tx_ts: remove an existing TX TS
*/
struct cfg80211_ops {
int (*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow);
int (*set_ap_chanwidth)(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_chan_def *chandef);
+
+ int (*add_tx_ts)(struct wiphy *wiphy, struct net_device *dev,
+ u8 tsid, const u8 *peer, u8 user_prio,
+ u16 admitted_time);
+ int (*del_tx_ts)(struct wiphy *wiphy, struct net_device *dev,
+ u8 tsid, const u8 *peer);
};
/*
* @WIPHY_FLAG_SUPPORTS_5_10_MHZ: Device supports 5 MHz and 10 MHz channels.
* @WIPHY_FLAG_HAS_CHANNEL_SWITCH: Device supports channel switch in
* beaconing mode (AP, IBSS, Mesh, ...).
+ * @WIPHY_FLAG_SUPPORTS_WMM_ADMISSION: the device supports setting up WMM
+ * TSPEC sessions (TID aka TSID 0-7) with the NL80211_CMD_ADD_TX_TS
+ * command. Standard IEEE 802.11 TSPEC setup is not yet supported, it
+ * needs to be able to handle Block-Ack agreements and other things.
*/
enum wiphy_flags {
- /* use hole at 0 */
+ WIPHY_FLAG_SUPPORTS_WMM_ADMISSION = BIT(0),
/* use hole at 1 */
/* use hole at 2 */
WIPHY_FLAG_NETNS_OK = BIT(3),
* QoS mapping is relevant for IP packets, it is only valid during an
* association. This is cleared on disassociation and AP restart.
*
+ * @NL80211_CMD_ADD_TX_TS: Ask the kernel to add a traffic stream for the given
+ * %NL80211_ATTR_TSID and %NL80211_ATTR_MAC with %NL80211_ATTR_USER_PRIO
+ * and %NL80211_ATTR_ADMITTED_TIME parameters.
+ * Note that the action frame handshake with the AP shall be handled by
+ * userspace via the normal management RX/TX framework, this only sets
+ * up the TX TS in the driver/device.
+ * If the admitted time attribute is not added then the request just checks
+ * if a subsequent setup could be successful, the intent is to use this to
+ * avoid setting up a session with the AP when local restrictions would
+ * make that impossible. However, the subsequent "real" setup may still
+ * fail even if the check was successful.
+ * @NL80211_CMD_DEL_TX_TS: Remove an existing TS with the %NL80211_ATTR_TSID
+ * and %NL80211_ATTR_MAC parameters. It isn't necessary to call this
+ * before removing a station entry entirely, or before disassociating
+ * or similar, cleanup will happen in the driver/device in this case.
+ *
* @NL80211_CMD_MAX: highest used command number
* @__NL80211_CMD_AFTER_LAST: internal use
*/
NL80211_CMD_SET_QOS_MAP,
+ NL80211_CMD_ADD_TX_TS,
+ NL80211_CMD_DEL_TX_TS,
+
/* add new commands above here */
/* used to define NL80211_CMD_MAX below */
* drivers to indicate dynack capability. Dynack is automatically disabled
* setting valid value for coverage class.
*
+ * @NL80211_ATTR_TSID: a TSID value (u8 attribute)
+ * @NL80211_ATTR_USER_PRIO: user priority value (u8 attribute)
+ * @NL80211_ATTR_ADMITTED_TIME: admitted time in units of 32 microseconds
+ * (per second) (u16 attribute)
+ *
* @NL80211_ATTR_MAX: highest attribute number currently defined
* @__NL80211_ATTR_AFTER_LAST: internal use
*/
NL80211_ATTR_WIPHY_DYN_ACK,
+ NL80211_ATTR_TSID,
+ NL80211_ATTR_USER_PRIO,
+ NL80211_ATTR_ADMITTED_TIME,
+
/* add attributes here, update the policy in nl80211.c */
__NL80211_ATTR_AFTER_LAST,
[NL80211_ATTR_IFACE_SOCKET_OWNER] = { .type = NLA_FLAG },
[NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
[NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
+ [NL80211_ATTR_TSID] = { .type = NLA_U8 },
+ [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
+ [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
};
/* policy for the key attributes */
if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
CMD(channel_switch, CHANNEL_SWITCH);
CMD(set_qos_map, SET_QOS_MAP);
+ if (rdev->wiphy.flags &
+ WIPHY_FLAG_SUPPORTS_WMM_ADMISSION)
+ CMD(add_tx_ts, ADD_TX_TS);
}
/* add into the if now */
#undef CMD
return ret;
}
+static int nl80211_add_tx_ts(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;
+ const u8 *peer;
+ u8 tsid, up;
+ u16 admitted_time = 0;
+ int err;
+
+ if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_WMM_ADMISSION))
+ return -EOPNOTSUPP;
+
+ if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
+ !info->attrs[NL80211_ATTR_USER_PRIO])
+ return -EINVAL;
+
+ tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
+ if (tsid >= IEEE80211_NUM_TIDS)
+ return -EINVAL;
+
+ up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
+ if (up >= IEEE80211_NUM_UPS)
+ return -EINVAL;
+
+ /* WMM uses TIDs 0-7 even for TSPEC */
+ if (tsid < IEEE80211_FIRST_TSPEC_TSID) {
+ if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_WMM_ADMISSION))
+ return -EINVAL;
+ } else {
+ /* TODO: handle 802.11 TSPEC/admission control
+ * need more attributes for that (e.g. BA session requirement)
+ */
+ return -EINVAL;
+ }
+
+ peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
+
+ if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
+ admitted_time =
+ nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
+ if (!admitted_time)
+ return -EINVAL;
+ }
+
+ wdev_lock(wdev);
+ switch (wdev->iftype) {
+ case NL80211_IFTYPE_STATION:
+ case NL80211_IFTYPE_P2P_CLIENT:
+ if (wdev->current_bss)
+ break;
+ err = -ENOTCONN;
+ goto out;
+ default:
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+
+ err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
+
+ out:
+ wdev_unlock(wdev);
+ return err;
+}
+
+static int nl80211_del_tx_ts(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;
+ const u8 *peer;
+ u8 tsid;
+ int err;
+
+ if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
+ return -EINVAL;
+
+ tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
+ peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
+
+ wdev_lock(wdev);
+ err = rdev_del_tx_ts(rdev, dev, tsid, peer);
+ wdev_unlock(wdev);
+
+ return err;
+}
+
#define NL80211_FLAG_NEED_WIPHY 0x01
#define NL80211_FLAG_NEED_NETDEV 0x02
#define NL80211_FLAG_NEED_RTNL 0x04
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
+ {
+ .cmd = NL80211_CMD_ADD_TX_TS,
+ .doit = nl80211_add_tx_ts,
+ .policy = nl80211_policy,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
+ NL80211_FLAG_NEED_RTNL,
+ },
+ {
+ .cmd = NL80211_CMD_DEL_TX_TS,
+ .doit = nl80211_del_tx_ts,
+ .policy = nl80211_policy,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
+ NL80211_FLAG_NEED_RTNL,
+ },
};
/* notification functions */
return ret;
}
+static inline int
+rdev_add_tx_ts(struct cfg80211_registered_device *rdev,
+ struct net_device *dev, u8 tsid, const u8 *peer,
+ u8 user_prio, u16 admitted_time)
+{
+ int ret = -EOPNOTSUPP;
+
+ trace_rdev_add_tx_ts(&rdev->wiphy, dev, tsid, peer,
+ user_prio, admitted_time);
+ if (rdev->ops->add_tx_ts)
+ ret = rdev->ops->add_tx_ts(&rdev->wiphy, dev, tsid, peer,
+ user_prio, admitted_time);
+ trace_rdev_return_int(&rdev->wiphy, ret);
+
+ return ret;
+}
+
+static inline int
+rdev_del_tx_ts(struct cfg80211_registered_device *rdev,
+ struct net_device *dev, u8 tsid, const u8 *peer)
+{
+ int ret = -EOPNOTSUPP;
+
+ trace_rdev_del_tx_ts(&rdev->wiphy, dev, tsid, peer);
+ if (rdev->ops->del_tx_ts)
+ ret = rdev->ops->del_tx_ts(&rdev->wiphy, dev, tsid, peer);
+ trace_rdev_return_int(&rdev->wiphy, ret);
+
+ return ret;
+}
+
#endif /* __CFG80211_RDEV_OPS */
WIPHY_PR_ARG, NETDEV_PR_ARG, CHAN_DEF_PR_ARG)
);
+TRACE_EVENT(rdev_add_tx_ts,
+ TP_PROTO(struct wiphy *wiphy, struct net_device *netdev,
+ u8 tsid, const u8 *peer, u8 user_prio, u16 admitted_time),
+ TP_ARGS(wiphy, netdev, tsid, peer, user_prio, admitted_time),
+ TP_STRUCT__entry(
+ WIPHY_ENTRY
+ NETDEV_ENTRY
+ MAC_ENTRY(peer)
+ __field(u8, tsid)
+ __field(u8, user_prio)
+ __field(u16, admitted_time)
+ ),
+ TP_fast_assign(
+ WIPHY_ASSIGN;
+ NETDEV_ASSIGN;
+ MAC_ASSIGN(peer, peer);
+ __entry->tsid = tsid;
+ __entry->user_prio = user_prio;
+ __entry->admitted_time = admitted_time;
+ ),
+ TP_printk(WIPHY_PR_FMT ", " NETDEV_PR_FMT ", " MAC_PR_FMT ", TSID %d, UP %d, time %d",
+ WIPHY_PR_ARG, NETDEV_PR_ARG, MAC_PR_ARG(peer),
+ __entry->tsid, __entry->user_prio, __entry->admitted_time)
+);
+
+TRACE_EVENT(rdev_del_tx_ts,
+ TP_PROTO(struct wiphy *wiphy, struct net_device *netdev,
+ u8 tsid, const u8 *peer),
+ TP_ARGS(wiphy, netdev, tsid, peer),
+ TP_STRUCT__entry(
+ WIPHY_ENTRY
+ NETDEV_ENTRY
+ MAC_ENTRY(peer)
+ __field(u8, tsid)
+ ),
+ TP_fast_assign(
+ WIPHY_ASSIGN;
+ NETDEV_ASSIGN;
+ MAC_ASSIGN(peer, peer);
+ __entry->tsid = tsid;
+ ),
+ TP_printk(WIPHY_PR_FMT ", " NETDEV_PR_FMT ", " MAC_PR_FMT ", TSID %d",
+ WIPHY_PR_ARG, NETDEV_PR_ARG, MAC_PR_ARG(peer), __entry->tsid)
+);
+
/*************************************************************
* cfg80211 exported functions traces *
*************************************************************/
projects / users / jedix / linux-maple.git / commitdiff