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mac80211: add p2p device type support

Browse Source 
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 <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2010-09-16 14:58:23 +02:00 committed by John W. Linville
parent 074ac8df9f
commit 2ca27bcff7
9 changed files with 117 additions and 43 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
drivers/net/wireless/mac80211_hwsim.c
View File

@ -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);

27
include/net/mac80211.h
View File

@ -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 */

25
net/mac80211/cfg.c
View File

@ -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;
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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);
}

6
net/mac80211/driver-ops.h
View File

@ -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;
}

21
net/mac80211/driver-trace.h
View File

@ -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 : "<nodev>")
#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 : "<nodev>")
#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" : ""
)
);

29
net/mac80211/iface.c
View File

@ -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. */

15
net/mac80211/main.c
View File

@ -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,

4
net/mac80211/rx.c
View File

@ -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;

18
net/mac80211/util.c
View File

@ -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;
}