From 2ca27bcff7127da1aa7dd39cd2a6f7cb187e327f Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 16 Sep 2010 14:58:23 +0200 Subject: [PATCH] mac80211: add p2p device type support When a driver advertises p2p device support, mac80211 will handle it, but internally it will rewrite the interface type to STA/AP rather than P2P-STA/GO since otherwise a lot of paths need to be touched that are otherwise identical. A p2p boolean tells drivers whether or not a given interface will be used for p2p or not. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- drivers/net/wireless/mac80211_hwsim.c | 15 +++++++++++---- include/net/mac80211.h | 27 ++++++++++++++++++++++++++- net/mac80211/cfg.c | 25 ++++++++++++++++++------- net/mac80211/driver-ops.h | 6 +++--- net/mac80211/driver-trace.h | 21 +++++++++++++-------- net/mac80211/iface.c | 29 ++++++++++++++++++++++++++--- net/mac80211/main.c | 15 +++++++++++++++ net/mac80211/rx.c | 4 +--- net/mac80211/util.c | 18 ++++-------------- 9 files changed, 117 insertions(+), 43 deletions(-) diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c index 92b486d..7eaaa3b 100644 --- a/drivers/net/wireless/mac80211_hwsim.c +++ b/drivers/net/wireless/mac80211_hwsim.c @@ -595,7 +595,8 @@ static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) { wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n", - __func__, vif->type, vif->addr); + __func__, ieee80211_vif_type_p2p(vif), + vif->addr); hwsim_set_magic(vif); return 0; } @@ -603,11 +604,14 @@ static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw, static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif, - enum nl80211_iftype newtype) + enum nl80211_iftype newtype, + bool newp2p) { + newtype = ieee80211_iftype_p2p(newtype, newp2p); wiphy_debug(hw->wiphy, "%s (old type=%d, new type=%d, mac_addr=%pM)\n", - __func__, vif->type, newtype, vif->addr); + __func__, ieee80211_vif_type_p2p(vif), + newtype, vif->addr); hwsim_check_magic(vif); return 0; @@ -617,7 +621,8 @@ static void mac80211_hwsim_remove_interface( struct ieee80211_hw *hw, struct ieee80211_vif *vif) { wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n", - __func__, vif->type, vif->addr); + __func__, ieee80211_vif_type_p2p(vif), + vif->addr); hwsim_check_magic(vif); hwsim_clear_magic(vif); } @@ -1310,6 +1315,8 @@ static int __init init_mac80211_hwsim(void) hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP) | + BIT(NL80211_IFTYPE_P2P_CLIENT) | + BIT(NL80211_IFTYPE_P2P_GO) | BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_MESH_POINT); diff --git a/include/net/mac80211.h b/include/net/mac80211.h index 19a5cb4..12a49f0 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -769,6 +769,8 @@ struct ieee80211_channel_switch { * @bss_conf: BSS configuration for this interface, either our own * or the BSS we're associated to * @addr: address of this interface + * @p2p: indicates whether this AP or STA interface is a p2p + * interface, i.e. a GO or p2p-sta respectively * @drv_priv: data area for driver use, will always be aligned to * sizeof(void *). */ @@ -776,6 +778,7 @@ struct ieee80211_vif { enum nl80211_iftype type; struct ieee80211_bss_conf bss_conf; u8 addr[ETH_ALEN]; + bool p2p; /* must be last */ u8 drv_priv[0] __attribute__((__aligned__(sizeof(void *)))); }; @@ -1701,7 +1704,7 @@ struct ieee80211_ops { struct ieee80211_vif *vif); int (*change_interface)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, - enum nl80211_iftype new_type); + enum nl80211_iftype new_type, bool p2p); void (*remove_interface)(struct ieee80211_hw *hw, struct ieee80211_vif *vif); int (*config)(struct ieee80211_hw *hw, u32 changed); @@ -2721,4 +2724,26 @@ conf_is_ht(struct ieee80211_conf *conf) return conf->channel_type != NL80211_CHAN_NO_HT; } +static inline enum nl80211_iftype +ieee80211_iftype_p2p(enum nl80211_iftype type, bool p2p) +{ + if (p2p) { + switch (type) { + case NL80211_IFTYPE_STATION: + return NL80211_IFTYPE_P2P_CLIENT; + case NL80211_IFTYPE_AP: + return NL80211_IFTYPE_P2P_GO; + default: + break; + } + } + return type; +} + +static inline enum nl80211_iftype +ieee80211_vif_type_p2p(struct ieee80211_vif *vif) +{ + return ieee80211_iftype_p2p(vif->type, vif->p2p); +} + #endif /* MAC80211_H */ diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 171e8ff..c981604 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -1151,15 +1151,26 @@ static int ieee80211_scan(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_scan_request *req) { - struct ieee80211_sub_if_data *sdata; - - sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); - if (sdata->vif.type != NL80211_IFTYPE_STATION && - sdata->vif.type != NL80211_IFTYPE_ADHOC && - sdata->vif.type != NL80211_IFTYPE_MESH_POINT && - (sdata->vif.type != NL80211_IFTYPE_AP || sdata->u.ap.beacon)) + switch (ieee80211_vif_type_p2p(&sdata->vif)) { + case NL80211_IFTYPE_STATION: + case NL80211_IFTYPE_ADHOC: + case NL80211_IFTYPE_MESH_POINT: + case NL80211_IFTYPE_P2P_CLIENT: + break; + case NL80211_IFTYPE_P2P_GO: + if (sdata->local->ops->hw_scan) + break; + /* FIXME: implement NoA while scanning in software */ + return -EOPNOTSUPP; + case NL80211_IFTYPE_AP: + if (sdata->u.ap.beacon) + return -EOPNOTSUPP; + break; + default: return -EOPNOTSUPP; + } return ieee80211_request_scan(sdata, req); } diff --git a/net/mac80211/driver-ops.h b/net/mac80211/driver-ops.h index 6064b7b..1698382 100644 --- a/net/mac80211/driver-ops.h +++ b/net/mac80211/driver-ops.h @@ -56,14 +56,14 @@ static inline int drv_add_interface(struct ieee80211_local *local, static inline int drv_change_interface(struct ieee80211_local *local, struct ieee80211_sub_if_data *sdata, - enum nl80211_iftype type) + enum nl80211_iftype type, bool p2p) { int ret; might_sleep(); - trace_drv_change_interface(local, sdata, type); - ret = local->ops->change_interface(&local->hw, &sdata->vif, type); + trace_drv_change_interface(local, sdata, type, p2p); + ret = local->ops->change_interface(&local->hw, &sdata->vif, type, p2p); trace_drv_return_int(local, ret); return ret; } diff --git a/net/mac80211/driver-trace.h b/net/mac80211/driver-trace.h index f6f3d89..6831fb1 100644 --- a/net/mac80211/driver-trace.h +++ b/net/mac80211/driver-trace.h @@ -25,12 +25,14 @@ static inline void trace_ ## name(proto) {} #define STA_PR_FMT " sta:%pM" #define STA_PR_ARG __entry->sta_addr -#define VIF_ENTRY __field(enum nl80211_iftype, vif_type) __field(void *, sdata) \ +#define VIF_ENTRY __field(enum nl80211_iftype, vif_type) __field(void *, sdata) \ + __field(bool, p2p) \ __string(vif_name, sdata->dev ? sdata->dev->name : "") -#define VIF_ASSIGN __entry->vif_type = sdata->vif.type; __entry->sdata = sdata; \ +#define VIF_ASSIGN __entry->vif_type = sdata->vif.type; __entry->sdata = sdata; \ + __entry->p2p = sdata->vif.p2p; \ __assign_str(vif_name, sdata->dev ? sdata->dev->name : "") -#define VIF_PR_FMT " vif:%s(%d)" -#define VIF_PR_ARG __get_str(vif_name), __entry->vif_type +#define VIF_PR_FMT " vif:%s(%d%s)" +#define VIF_PR_ARG __get_str(vif_name), __entry->vif_type, __entry->p2p ? "/p2p" : "" /* * Tracing for driver callbacks. @@ -139,25 +141,28 @@ TRACE_EVENT(drv_add_interface, TRACE_EVENT(drv_change_interface, TP_PROTO(struct ieee80211_local *local, struct ieee80211_sub_if_data *sdata, - enum nl80211_iftype type), + enum nl80211_iftype type, bool p2p), - TP_ARGS(local, sdata, type), + TP_ARGS(local, sdata, type, p2p), TP_STRUCT__entry( LOCAL_ENTRY VIF_ENTRY __field(u32, new_type) + __field(bool, new_p2p) ), TP_fast_assign( LOCAL_ASSIGN; VIF_ASSIGN; __entry->new_type = type; + __entry->new_p2p = p2p; ), TP_printk( - LOCAL_PR_FMT VIF_PR_FMT " new type:%d", - LOCAL_PR_ARG, VIF_PR_ARG, __entry->new_type + LOCAL_PR_FMT VIF_PR_FMT " new type:%d%s", + LOCAL_PR_ARG, VIF_PR_ARG, __entry->new_type, + __entry->new_p2p ? "/p2p" : "" ) ); diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index 95908aa..6678573 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -188,6 +188,8 @@ static int ieee80211_do_open(struct net_device *dev, bool coming_up) break; case NL80211_IFTYPE_UNSPECIFIED: case NUM_NL80211_IFTYPES: + case NL80211_IFTYPE_P2P_CLIENT: + case NL80211_IFTYPE_P2P_GO: /* cannot happen */ WARN_ON(1); break; @@ -844,6 +846,7 @@ static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, /* and set some type-dependent values */ sdata->vif.type = type; + sdata->vif.p2p = false; sdata->dev->netdev_ops = &ieee80211_dataif_ops; sdata->wdev.iftype = type; @@ -857,10 +860,20 @@ static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, INIT_WORK(&sdata->work, ieee80211_iface_work); switch (type) { + case NL80211_IFTYPE_P2P_GO: + type = NL80211_IFTYPE_AP; + sdata->vif.type = type; + sdata->vif.p2p = true; + /* fall through */ case NL80211_IFTYPE_AP: skb_queue_head_init(&sdata->u.ap.ps_bc_buf); INIT_LIST_HEAD(&sdata->u.ap.vlans); break; + case NL80211_IFTYPE_P2P_CLIENT: + type = NL80211_IFTYPE_STATION; + sdata->vif.type = type; + sdata->vif.p2p = true; + /* fall through */ case NL80211_IFTYPE_STATION: ieee80211_sta_setup_sdata(sdata); break; @@ -894,6 +907,8 @@ static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata, { struct ieee80211_local *local = sdata->local; int ret, err; + enum nl80211_iftype internal_type = type; + bool p2p = false; ASSERT_RTNL(); @@ -926,11 +941,19 @@ static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata, * code isn't prepared to handle). */ break; + case NL80211_IFTYPE_P2P_CLIENT: + p2p = true; + internal_type = NL80211_IFTYPE_STATION; + break; + case NL80211_IFTYPE_P2P_GO: + p2p = true; + internal_type = NL80211_IFTYPE_AP; + break; default: return -EBUSY; } - ret = ieee80211_check_concurrent_iface(sdata, type); + ret = ieee80211_check_concurrent_iface(sdata, internal_type); if (ret) return ret; @@ -938,7 +961,7 @@ static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata, ieee80211_teardown_sdata(sdata->dev); - ret = drv_change_interface(local, sdata, type); + ret = drv_change_interface(local, sdata, internal_type, p2p); if (ret) type = sdata->vif.type; @@ -957,7 +980,7 @@ int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, ASSERT_RTNL(); - if (type == sdata->vif.type) + if (type == ieee80211_vif_type_p2p(&sdata->vif)) return 0; /* Setting ad-hoc mode on non-IBSS channel is not supported. */ diff --git a/net/mac80211/main.c b/net/mac80211/main.c index 7fb1148..18fdeca 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -459,6 +459,21 @@ ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = { BIT(IEEE80211_STYPE_DEAUTH >> 4) | BIT(IEEE80211_STYPE_ACTION >> 4), }, + [NL80211_IFTYPE_P2P_CLIENT] = { + .tx = 0xffff, + .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | + BIT(IEEE80211_STYPE_PROBE_REQ >> 4), + }, + [NL80211_IFTYPE_P2P_GO] = { + .tx = 0xffff, + .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | + BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | + BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | + BIT(IEEE80211_STYPE_DISASSOC >> 4) | + BIT(IEEE80211_STYPE_AUTH >> 4) | + BIT(IEEE80211_STYPE_DEAUTH >> 4) | + BIT(IEEE80211_STYPE_ACTION >> 4), + }, }; struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index ac205a3..c036815 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -2588,9 +2588,7 @@ static int prepare_for_handlers(struct ieee80211_sub_if_data *sdata, if (compare_ether_addr(sdata->u.wds.remote_addr, hdr->addr2)) return 0; break; - case NL80211_IFTYPE_MONITOR: - case NL80211_IFTYPE_UNSPECIFIED: - case NUM_NL80211_IFTYPES: + default: /* should never get here */ WARN_ON(1); break; diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 9f21a69..737f426 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -474,16 +474,10 @@ void ieee80211_iterate_active_interfaces( list_for_each_entry(sdata, &local->interfaces, list) { switch (sdata->vif.type) { - case NUM_NL80211_IFTYPES: - case NL80211_IFTYPE_UNSPECIFIED: case NL80211_IFTYPE_MONITOR: case NL80211_IFTYPE_AP_VLAN: continue; - case NL80211_IFTYPE_AP: - case NL80211_IFTYPE_STATION: - case NL80211_IFTYPE_ADHOC: - case NL80211_IFTYPE_WDS: - case NL80211_IFTYPE_MESH_POINT: + default: break; } if (ieee80211_sdata_running(sdata)) @@ -508,16 +502,10 @@ void ieee80211_iterate_active_interfaces_atomic( list_for_each_entry_rcu(sdata, &local->interfaces, list) { switch (sdata->vif.type) { - case NUM_NL80211_IFTYPES: - case NL80211_IFTYPE_UNSPECIFIED: case NL80211_IFTYPE_MONITOR: case NL80211_IFTYPE_AP_VLAN: continue; - case NL80211_IFTYPE_AP: - case NL80211_IFTYPE_STATION: - case NL80211_IFTYPE_ADHOC: - case NL80211_IFTYPE_WDS: - case NL80211_IFTYPE_MESH_POINT: + default: break; } if (ieee80211_sdata_running(sdata)) @@ -1193,6 +1181,8 @@ int ieee80211_reconfig(struct ieee80211_local *local) break; case NL80211_IFTYPE_UNSPECIFIED: case NUM_NL80211_IFTYPES: + case NL80211_IFTYPE_P2P_CLIENT: + case NL80211_IFTYPE_P2P_GO: WARN_ON(1); break; } -- 2.7.4