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authorJohn W. Linville <linville@tuxdriver.com>2011-08-29 14:52:20 -0400
committerJohn W. Linville <linville@tuxdriver.com>2011-08-29 14:52:20 -0400
commitba6e5eb107b4b26444cb67ce6fb8eb0973a97964 (patch)
tree9377baf652e0cd8360372020b0386e238d07a30d /net
parentf3116f62cb56ef5efd172371fab688bb27529f69 (diff)
parenta508a6ea234571e0e7d1e9f2455fc1eca54d1fef (diff)
downloadop-kernel-dev-ba6e5eb107b4b26444cb67ce6fb8eb0973a97964.zip
op-kernel-dev-ba6e5eb107b4b26444cb67ce6fb8eb0973a97964.tar.gz
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem
Diffstat (limited to 'net')
-rw-r--r--net/mac80211/Kconfig13
-rw-r--r--net/mac80211/agg-tx.c2
-rw-r--r--net/mac80211/cfg.c19
-rw-r--r--net/mac80211/debugfs_netdev.c8
-rw-r--r--net/mac80211/ieee80211_i.h1
-rw-r--r--net/mac80211/mesh.c259
-rw-r--r--net/mac80211/mesh.h36
-rw-r--r--net/mac80211/mesh_hwmp.c130
-rw-r--r--net/mac80211/mesh_pathtbl.c305
-rw-r--r--net/mac80211/mesh_plink.c241
-rw-r--r--net/mac80211/mlme.c59
-rw-r--r--net/mac80211/rx.c48
-rw-r--r--net/mac80211/sta_info.c330
-rw-r--r--net/mac80211/sta_info.h30
-rw-r--r--net/mac80211/status.c18
-rw-r--r--net/mac80211/tx.c14
-rw-r--r--net/nfc/core.c6
-rw-r--r--net/nfc/rawsock.c13
-rw-r--r--net/wireless/mesh.c3
-rw-r--r--net/wireless/nl80211.c42
-rw-r--r--net/wireless/util.c6
21 files changed, 1207 insertions, 376 deletions
diff --git a/net/mac80211/Kconfig b/net/mac80211/Kconfig
index f5fdfcbf..d1886b5 100644
--- a/net/mac80211/Kconfig
+++ b/net/mac80211/Kconfig
@@ -199,6 +199,19 @@ config MAC80211_VERBOSE_MPL_DEBUG
Do not select this option.
+config MAC80211_VERBOSE_MPATH_DEBUG
+ bool "Verbose mesh path debugging"
+ depends on MAC80211_DEBUG_MENU
+ depends on MAC80211_MESH
+ ---help---
+ Selecting this option causes mac80211 to print out very
+ verbose mesh path selection debugging messages (when mac80211
+ is taking part in a mesh network).
+ It should not be selected on production systems as those
+ messages are remotely triggerable.
+
+ Do not select this option.
+
config MAC80211_VERBOSE_MHWMP_DEBUG
bool "Verbose mesh HWMP routing debugging"
depends on MAC80211_DEBUG_MENU
diff --git a/net/mac80211/agg-tx.c b/net/mac80211/agg-tx.c
index b7075f3..018108d 100644
--- a/net/mac80211/agg-tx.c
+++ b/net/mac80211/agg-tx.c
@@ -128,7 +128,7 @@ void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u1
memcpy(bar->ta, sdata->vif.addr, ETH_ALEN);
bar_control |= (u16)IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL;
bar_control |= (u16)IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA;
- bar_control |= (u16)(tid << 12);
+ bar_control |= (u16)(tid << IEEE80211_BAR_CTRL_TID_INFO_SHIFT);
bar->control = cpu_to_le16(bar_control);
bar->start_seq_num = cpu_to_le16(ssn);
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index a589add..4baa03b 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -697,6 +697,9 @@ static void sta_apply_parameters(struct ieee80211_local *local,
}
spin_unlock_irqrestore(&sta->flaglock, flags);
+ sta->sta.uapsd_queues = params->uapsd_queues;
+ sta->sta.max_sp = params->max_sp;
+
/*
* cfg80211 validates this (1-2007) and allows setting the AID
* only when creating a new station entry
@@ -1137,6 +1140,22 @@ static int ieee80211_update_mesh_config(struct wiphy *wiphy,
conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
ieee80211_mesh_root_setup(ifmsh);
}
+ if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
+ /* our current gate announcement implementation rides on root
+ * announcements, so require this ifmsh to also be a root node
+ * */
+ if (nconf->dot11MeshGateAnnouncementProtocol &&
+ !conf->dot11MeshHWMPRootMode) {
+ conf->dot11MeshHWMPRootMode = 1;
+ ieee80211_mesh_root_setup(ifmsh);
+ }
+ conf->dot11MeshGateAnnouncementProtocol =
+ nconf->dot11MeshGateAnnouncementProtocol;
+ }
+ if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) {
+ conf->dot11MeshHWMPRannInterval =
+ nconf->dot11MeshHWMPRannInterval;
+ }
return 0;
}
diff --git a/net/mac80211/debugfs_netdev.c b/net/mac80211/debugfs_netdev.c
index 9ea7c0d..6e8eab7 100644
--- a/net/mac80211/debugfs_netdev.c
+++ b/net/mac80211/debugfs_netdev.c
@@ -372,6 +372,10 @@ IEEE80211_IF_FILE(min_discovery_timeout,
u.mesh.mshcfg.min_discovery_timeout, DEC);
IEEE80211_IF_FILE(dot11MeshHWMPRootMode,
u.mesh.mshcfg.dot11MeshHWMPRootMode, DEC);
+IEEE80211_IF_FILE(dot11MeshGateAnnouncementProtocol,
+ u.mesh.mshcfg.dot11MeshGateAnnouncementProtocol, DEC);
+IEEE80211_IF_FILE(dot11MeshHWMPRannInterval,
+ u.mesh.mshcfg.dot11MeshHWMPRannInterval, DEC);
#endif
@@ -485,7 +489,9 @@ static void add_mesh_config(struct ieee80211_sub_if_data *sdata)
MESHPARAMS_ADD(dot11MeshHWMPmaxPREQretries);
MESHPARAMS_ADD(path_refresh_time);
MESHPARAMS_ADD(min_discovery_timeout);
-
+ MESHPARAMS_ADD(dot11MeshHWMPRootMode);
+ MESHPARAMS_ADD(dot11MeshHWMPRannInterval);
+ MESHPARAMS_ADD(dot11MeshGateAnnouncementProtocol);
#undef MESHPARAMS_ADD
}
#endif
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index ea74190..c204cee 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -514,6 +514,7 @@ struct ieee80211_if_mesh {
struct mesh_config mshcfg;
u32 mesh_seqnum;
bool accepting_plinks;
+ int num_gates;
const u8 *ie;
u8 ie_len;
enum {
diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
index 29e9980..28ab510 100644
--- a/net/mac80211/mesh.c
+++ b/net/mac80211/mesh.c
@@ -13,10 +13,6 @@
#include "ieee80211_i.h"
#include "mesh.h"
-#define IEEE80211_MESH_PEER_INACTIVITY_LIMIT (1800 * HZ)
-#define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ)
-#define IEEE80211_MESH_RANN_INTERVAL (1 * HZ)
-
#define MESHCONF_CAPAB_ACCEPT_PLINKS 0x01
#define MESHCONF_CAPAB_FORWARDING 0x08
@@ -27,6 +23,17 @@
int mesh_allocated;
static struct kmem_cache *rm_cache;
+#ifdef CONFIG_MAC80211_MESH
+bool mesh_action_is_path_sel(struct ieee80211_mgmt *mgmt)
+{
+ return (mgmt->u.action.u.mesh_action.action_code ==
+ WLAN_MESH_ACTION_HWMP_PATH_SELECTION);
+}
+#else
+bool mesh_action_is_path_sel(struct ieee80211_mgmt *mgmt)
+{ return false; }
+#endif
+
void ieee80211s_init(void)
{
mesh_pathtbl_init();
@@ -204,36 +211,185 @@ int mesh_rmc_check(u8 *sa, struct ieee80211s_hdr *mesh_hdr,
return 0;
}
-void mesh_mgmt_ies_add(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
+int
+mesh_add_meshconf_ie(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
+ u8 *pos, neighbors;
+ u8 meshconf_len = sizeof(struct ieee80211_meshconf_ie);
+
+ if (skb_tailroom(skb) < 2 + meshconf_len)
+ return -ENOMEM;
+
+ pos = skb_put(skb, 2 + meshconf_len);
+ *pos++ = WLAN_EID_MESH_CONFIG;
+ *pos++ = meshconf_len;
+
+ /* Active path selection protocol ID */
+ *pos++ = ifmsh->mesh_pp_id;
+ /* Active path selection metric ID */
+ *pos++ = ifmsh->mesh_pm_id;
+ /* Congestion control mode identifier */
+ *pos++ = ifmsh->mesh_cc_id;
+ /* Synchronization protocol identifier */
+ *pos++ = ifmsh->mesh_sp_id;
+ /* Authentication Protocol identifier */
+ *pos++ = ifmsh->mesh_auth_id;
+ /* Mesh Formation Info - number of neighbors */
+ neighbors = atomic_read(&ifmsh->mshstats.estab_plinks);
+ /* Number of neighbor mesh STAs or 15 whichever is smaller */
+ neighbors = (neighbors > 15) ? 15 : neighbors;
+ *pos++ = neighbors << 1;
+ /* Mesh capability */
+ ifmsh->accepting_plinks = mesh_plink_availables(sdata);
+ *pos = MESHCONF_CAPAB_FORWARDING;
+ *pos++ |= ifmsh->accepting_plinks ?
+ MESHCONF_CAPAB_ACCEPT_PLINKS : 0x00;
+ *pos++ = 0x00;
+
+ return 0;
+}
+
+int
+mesh_add_meshid_ie(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
+ u8 *pos;
+
+ if (skb_tailroom(skb) < 2 + ifmsh->mesh_id_len)
+ return -ENOMEM;
+
+ pos = skb_put(skb, 2 + ifmsh->mesh_id_len);
+ *pos++ = WLAN_EID_MESH_ID;
+ *pos++ = ifmsh->mesh_id_len;
+ if (ifmsh->mesh_id_len)
+ memcpy(pos, ifmsh->mesh_id, ifmsh->mesh_id_len);
+
+ return 0;
+}
+
+int
+mesh_add_vendor_ies(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
+ u8 offset, len;
+ const u8 *data;
+
+ if (!ifmsh->ie || !ifmsh->ie_len)
+ return 0;
+
+ /* fast-forward to vendor IEs */
+ offset = ieee80211_ie_split_vendor(ifmsh->ie, ifmsh->ie_len, 0);
+
+ if (offset) {
+ len = ifmsh->ie_len - offset;
+ data = ifmsh->ie + offset;
+ if (skb_tailroom(skb) < len)
+ return -ENOMEM;
+ memcpy(skb_put(skb, len), data, len);
+ }
+
+ return 0;
+}
+
+int
+mesh_add_rsn_ie(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
+ u8 len = 0;
+ const u8 *data;
+
+ if (!ifmsh->ie || !ifmsh->ie_len)
+ return 0;
+
+ /* find RSN IE */
+ data = ifmsh->ie;
+ while (data < ifmsh->ie + ifmsh->ie_len) {
+ if (*data == WLAN_EID_RSN) {
+ len = data[1] + 2;
+ break;
+ }
+ data++;
+ }
+
+ if (len) {
+ if (skb_tailroom(skb) < len)
+ return -ENOMEM;
+ memcpy(skb_put(skb, len), data, len);
+ }
+
+ return 0;
+}
+
+int
+mesh_add_srates_ie(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_local *local = sdata->local;
struct ieee80211_supported_band *sband;
- u8 *pos;
- int len, i, rate;
- u8 neighbors;
+ int rate;
+ u8 i, rates, *pos;
sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
- len = sband->n_bitrates;
- if (len > 8)
- len = 8;
- pos = skb_put(skb, len + 2);
+ rates = sband->n_bitrates;
+ if (rates > 8)
+ rates = 8;
+
+ if (skb_tailroom(skb) < rates + 2)
+ return -ENOMEM;
+
+ pos = skb_put(skb, rates + 2);
*pos++ = WLAN_EID_SUPP_RATES;
- *pos++ = len;
- for (i = 0; i < len; i++) {
+ *pos++ = rates;
+ for (i = 0; i < rates; i++) {
rate = sband->bitrates[i].bitrate;
*pos++ = (u8) (rate / 5);
}
- if (sband->n_bitrates > len) {
- pos = skb_put(skb, sband->n_bitrates - len + 2);
+ return 0;
+}
+
+int
+mesh_add_ext_srates_ie(struct sk_buff *skb,
+ struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_supported_band *sband;
+ int rate;
+ u8 i, exrates, *pos;
+
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+ exrates = sband->n_bitrates;
+ if (exrates > 8)
+ exrates -= 8;
+ else
+ exrates = 0;
+
+ if (skb_tailroom(skb) < exrates + 2)
+ return -ENOMEM;
+
+ if (exrates) {
+ pos = skb_put(skb, exrates + 2);
*pos++ = WLAN_EID_EXT_SUPP_RATES;
- *pos++ = sband->n_bitrates - len;
- for (i = len; i < sband->n_bitrates; i++) {
+ *pos++ = exrates;
+ for (i = 8; i < sband->n_bitrates; i++) {
rate = sband->bitrates[i].bitrate;
*pos++ = (u8) (rate / 5);
}
}
+ return 0;
+}
+int mesh_add_ds_params_ie(struct sk_buff *skb,
+ struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_supported_band *sband;
+ u8 *pos;
+
+ if (skb_tailroom(skb) < 3)
+ return -ENOMEM;
+
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
if (sband->band == IEEE80211_BAND_2GHZ) {
pos = skb_put(skb, 2 + 1);
*pos++ = WLAN_EID_DS_PARAMS;
@@ -241,53 +397,9 @@ void mesh_mgmt_ies_add(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
*pos++ = ieee80211_frequency_to_channel(local->hw.conf.channel->center_freq);
}
- pos = skb_put(skb, 2 + sdata->u.mesh.mesh_id_len);
- *pos++ = WLAN_EID_MESH_ID;
- *pos++ = sdata->u.mesh.mesh_id_len;
- if (sdata->u.mesh.mesh_id_len)
- memcpy(pos, sdata->u.mesh.mesh_id, sdata->u.mesh.mesh_id_len);
-
- pos = skb_put(skb, 2 + sizeof(struct ieee80211_meshconf_ie));
- *pos++ = WLAN_EID_MESH_CONFIG;
- *pos++ = sizeof(struct ieee80211_meshconf_ie);
-
- /* Active path selection protocol ID */
- *pos++ = sdata->u.mesh.mesh_pp_id;
-
- /* Active path selection metric ID */
- *pos++ = sdata->u.mesh.mesh_pm_id;
-
- /* Congestion control mode identifier */
- *pos++ = sdata->u.mesh.mesh_cc_id;
-
- /* Synchronization protocol identifier */
- *pos++ = sdata->u.mesh.mesh_sp_id;
-
- /* Authentication Protocol identifier */
- *pos++ = sdata->u.mesh.mesh_auth_id;
-
- /* Mesh Formation Info - number of neighbors */
- neighbors = atomic_read(&sdata->u.mesh.mshstats.estab_plinks);
- /* Number of neighbor mesh STAs or 15 whichever is smaller */
- neighbors = (neighbors > 15) ? 15 : neighbors;
- *pos++ = neighbors << 1;
-
- /* Mesh capability */
- sdata->u.mesh.accepting_plinks = mesh_plink_availables(sdata);
- *pos = MESHCONF_CAPAB_FORWARDING;
- *pos++ |= sdata->u.mesh.accepting_plinks ?
- MESHCONF_CAPAB_ACCEPT_PLINKS : 0x00;
- *pos++ = 0x00;
-
- if (sdata->u.mesh.ie) {
- int len = sdata->u.mesh.ie_len;
- const u8 *data = sdata->u.mesh.ie;
- if (skb_tailroom(skb) > len)
- memcpy(skb_put(skb, len), data, len);
- }
+ return 0;
}
-
static void ieee80211_mesh_path_timer(unsigned long data)
{
struct ieee80211_sub_if_data *sdata =
@@ -425,7 +537,8 @@ static void ieee80211_mesh_rootpath(struct ieee80211_sub_if_data *sdata)
mesh_path_tx_root_frame(sdata);
mod_timer(&ifmsh->mesh_path_root_timer,
- round_jiffies(jiffies + IEEE80211_MESH_RANN_INTERVAL));
+ round_jiffies(TU_TO_EXP_TIME(
+ ifmsh->mshcfg.dot11MeshHWMPRannInterval)));
}
#ifdef CONFIG_PM
@@ -433,7 +546,7 @@ void ieee80211_mesh_quiesce(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
- /* use atomic bitops in case both timers fire at the same time */
+ /* use atomic bitops in case all timers fire at the same time */
if (del_timer_sync(&ifmsh->housekeeping_timer))
set_bit(TMR_RUNNING_HK, &ifmsh->timers_running);
@@ -557,11 +670,18 @@ static void ieee80211_mesh_rx_mgmt_action(struct ieee80211_sub_if_data *sdata,
struct ieee80211_rx_status *rx_status)
{
switch (mgmt->u.action.category) {
- case WLAN_CATEGORY_MESH_ACTION:
- mesh_rx_plink_frame(sdata, mgmt, len, rx_status);
+ case WLAN_CATEGORY_SELF_PROTECTED:
+ switch (mgmt->u.action.u.self_prot.action_code) {
+ case WLAN_SP_MESH_PEERING_OPEN:
+ case WLAN_SP_MESH_PEERING_CLOSE:
+ case WLAN_SP_MESH_PEERING_CONFIRM:
+ mesh_rx_plink_frame(sdata, mgmt, len, rx_status);
+ break;
+ }
break;
- case WLAN_CATEGORY_MESH_PATH_SEL:
- mesh_rx_path_sel_frame(sdata, mgmt, len);
+ case WLAN_CATEGORY_MESH_ACTION:
+ if (mesh_action_is_path_sel(mgmt))
+ mesh_rx_path_sel_frame(sdata, mgmt, len);
break;
}
}
@@ -633,6 +753,7 @@ void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata)
ifmsh->accepting_plinks = true;
ifmsh->preq_id = 0;
ifmsh->sn = 0;
+ ifmsh->num_gates = 0;
atomic_set(&ifmsh->mpaths, 0);
mesh_rmc_init(sdata);
ifmsh->last_preq = jiffies;
diff --git a/net/mac80211/mesh.h b/net/mac80211/mesh.h
index 249e733..2027207 100644
--- a/net/mac80211/mesh.h
+++ b/net/mac80211/mesh.h
@@ -81,6 +81,7 @@ enum mesh_deferred_task_flags {
* @discovery_retries: number of discovery retries
* @flags: mesh path flags, as specified on &enum mesh_path_flags
* @state_lock: mesh path state lock
+ * @is_gate: the destination station of this path is a mesh gate
*
*
* The combination of dst and sdata is unique in the mesh path table. Since the
@@ -104,6 +105,7 @@ struct mesh_path {
u8 discovery_retries;
enum mesh_path_flags flags;
spinlock_t state_lock;
+ bool is_gate;
};
/**
@@ -120,6 +122,9 @@ struct mesh_path {
* buckets
* @mean_chain_len: maximum average length for the hash buckets' list, if it is
* reached, the table will grow
+ * @known_gates: list of known mesh gates and their mpaths by the station. The
+ * gate's mpath may or may not be resolved and active.
+ *
* rcu_head: RCU head to free the table
*/
struct mesh_table {
@@ -133,6 +138,8 @@ struct mesh_table {
int (*copy_node) (struct hlist_node *p, struct mesh_table *newtbl);
int size_order;
int mean_chain_len;
+ struct hlist_head *known_gates;
+ spinlock_t gates_lock;
struct rcu_head rcu_head;
};
@@ -166,6 +173,8 @@ struct mesh_rmc {
u32 idx_mask;
};
+#define IEEE80211_MESH_PEER_INACTIVITY_LIMIT (1800 * HZ)
+#define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ)
#define MESH_DEFAULT_BEACON_INTERVAL 1000 /* in 1024 us units */
@@ -177,14 +186,6 @@ struct mesh_rmc {
/* Maximum number of paths per interface */
#define MESH_MAX_MPATHS 1024
-/* Pending ANA approval */
-#define MESH_PATH_SEL_ACTION 0
-
-/* PERR reason codes */
-#define PEER_RCODE_UNSPECIFIED 11
-#define PERR_RCODE_NO_ROUTE 12
-#define PERR_RCODE_DEST_UNREACH 13
-
/* Public interfaces */
/* Various */
int ieee80211_fill_mesh_addresses(struct ieee80211_hdr *hdr, __le16 *fc,
@@ -199,6 +200,20 @@ bool mesh_matches_local(struct ieee802_11_elems *ie,
void mesh_ids_set_default(struct ieee80211_if_mesh *mesh);
void mesh_mgmt_ies_add(struct sk_buff *skb,
struct ieee80211_sub_if_data *sdata);
+int mesh_add_meshconf_ie(struct sk_buff *skb,
+ struct ieee80211_sub_if_data *sdata);
+int mesh_add_meshid_ie(struct sk_buff *skb,
+ struct ieee80211_sub_if_data *sdata);
+int mesh_add_rsn_ie(struct sk_buff *skb,
+ struct ieee80211_sub_if_data *sdata);
+int mesh_add_vendor_ies(struct sk_buff *skb,
+ struct ieee80211_sub_if_data *sdata);
+int mesh_add_srates_ie(struct sk_buff *skb,
+ struct ieee80211_sub_if_data *sdata);
+int mesh_add_ext_srates_ie(struct sk_buff *skb,
+ struct ieee80211_sub_if_data *sdata);
+int mesh_add_ds_params_ie(struct sk_buff *skb,
+ struct ieee80211_sub_if_data *sdata);
void mesh_rmc_free(struct ieee80211_sub_if_data *sdata);
int mesh_rmc_init(struct ieee80211_sub_if_data *sdata);
void ieee80211s_init(void);
@@ -227,6 +242,10 @@ void mesh_path_flush(struct ieee80211_sub_if_data *sdata);
void mesh_rx_path_sel_frame(struct ieee80211_sub_if_data *sdata,
struct ieee80211_mgmt *mgmt, size_t len);
int mesh_path_add(u8 *dst, struct ieee80211_sub_if_data *sdata);
+
+int mesh_path_add_gate(struct mesh_path *mpath);
+int mesh_path_send_to_gates(struct mesh_path *mpath);
+int mesh_gate_num(struct ieee80211_sub_if_data *sdata);
/* Mesh plinks */
void mesh_neighbour_update(u8 *hw_addr, u32 rates,
struct ieee80211_sub_if_data *sdata,
@@ -262,6 +281,7 @@ void mesh_path_quiesce(struct ieee80211_sub_if_data *sdata);
void mesh_path_restart(struct ieee80211_sub_if_data *sdata);
void mesh_path_tx_root_frame(struct ieee80211_sub_if_data *sdata);
+bool mesh_action_is_path_sel(struct ieee80211_mgmt *mgmt);
extern int mesh_paths_generation;
#ifdef CONFIG_MAC80211_MESH
diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c
index 3d8e55a..fd4f76a 100644
--- a/net/mac80211/mesh_hwmp.c
+++ b/net/mac80211/mesh_hwmp.c
@@ -11,7 +11,8 @@
#include "mesh.h"
#ifdef CONFIG_MAC80211_VERBOSE_MHWMP_DEBUG
-#define mhwmp_dbg(fmt, args...) printk(KERN_DEBUG "Mesh HWMP: " fmt, ##args)
+#define mhwmp_dbg(fmt, args...) \
+ printk(KERN_DEBUG "Mesh HWMP (%s): " fmt "\n", sdata->name, ##args)
#else
#define mhwmp_dbg(fmt, args...) do { (void)(0); } while (0)
#endif
@@ -68,12 +69,12 @@ static inline u32 u16_field_get(u8 *preq_elem, int offset, bool ae)
#define PREP_IE_FLAGS(x) PREQ_IE_FLAGS(x)
#define PREP_IE_HOPCOUNT(x) PREQ_IE_HOPCOUNT(x)
#define PREP_IE_TTL(x) PREQ_IE_TTL(x)
-#define PREP_IE_ORIG_ADDR(x) (x + 3)
-#define PREP_IE_ORIG_SN(x) u32_field_get(x, 9, 0)
+#define PREP_IE_ORIG_ADDR(x) (AE_F_SET(x) ? x + 27 : x + 21)
+#define PREP_IE_ORIG_SN(x) u32_field_get(x, 27, AE_F_SET(x))
#define PREP_IE_LIFETIME(x) u32_field_get(x, 13, AE_F_SET(x))
#define PREP_IE_METRIC(x) u32_field_get(x, 17, AE_F_SET(x))
-#define PREP_IE_TARGET_ADDR(x) (AE_F_SET(x) ? x + 27 : x + 21)
-#define PREP_IE_TARGET_SN(x) u32_field_get(x, 27, AE_F_SET(x))
+#define PREP_IE_TARGET_ADDR(x) (x + 3)
+#define PREP_IE_TARGET_SN(x) u32_field_get(x, 9, 0)
#define PERR_IE_TTL(x) (*(x))
#define PERR_IE_TARGET_FLAGS(x) (*(x + 2))
@@ -132,24 +133,25 @@ static int mesh_path_sel_frame_tx(enum mpath_frame_type action, u8 flags,
memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
/* BSSID == SA */
memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
- mgmt->u.action.category = WLAN_CATEGORY_MESH_PATH_SEL;
- mgmt->u.action.u.mesh_action.action_code = MESH_PATH_SEL_ACTION;
+ mgmt->u.action.category = WLAN_CATEGORY_MESH_ACTION;
+ mgmt->u.action.u.mesh_action.action_code =
+ WLAN_MESH_ACTION_HWMP_PATH_SELECTION;
switch (action) {
case MPATH_PREQ:
- mhwmp_dbg("sending PREQ to %pM\n", target);
+ mhwmp_dbg("sending PREQ to %pM", target);
ie_len = 37;
pos = skb_put(skb, 2 + ie_len);
*pos++ = WLAN_EID_PREQ;
break;
case MPATH_PREP:
- mhwmp_dbg("sending PREP to %pM\n", target);
+ mhwmp_dbg("sending PREP to %pM", target);
ie_len = 31;
pos = skb_put(skb, 2 + ie_len);
*pos++ = WLAN_EID_PREP;
break;
case MPATH_RANN:
- mhwmp_dbg("sending RANN from %pM\n", orig_addr);
+ mhwmp_dbg("sending RANN from %pM", orig_addr);
ie_len = sizeof(struct ieee80211_rann_ie);
pos = skb_put(skb, 2 + ie_len);
*pos++ = WLAN_EID_RANN;
@@ -163,29 +165,37 @@ static int mesh_path_sel_frame_tx(enum mpath_frame_type action, u8 flags,
*pos++ = flags;
*pos++ = hop_count;
*pos++ = ttl;
- if (action == MPATH_PREQ) {
- memcpy(pos, &preq_id, 4);
+ if (action == MPATH_PREP) {
+ memcpy(pos, target, ETH_ALEN);
+ pos += ETH_ALEN;
+ memcpy(pos, &target_sn, 4);
pos += 4;
- }
- memcpy(pos, orig_addr, ETH_ALEN);
- pos += ETH_ALEN;
- memcpy(pos, &orig_sn, 4);
- pos += 4;
- if (action != MPATH_RANN) {
- memcpy(pos, &lifetime, 4);
+ } else {
+ if (action == MPATH_PREQ) {
+ memcpy(pos, &preq_id, 4);
+ pos += 4;
+ }
+ memcpy(pos, orig_addr, ETH_ALEN);
+ pos += ETH_ALEN;
+ memcpy(pos, &orig_sn, 4);
pos += 4;
}
+ memcpy(pos, &lifetime, 4); /* interval for RANN */
+ pos += 4;
memcpy(pos, &metric, 4);
pos += 4;
if (action == MPATH_PREQ) {
- /* destination count */
- *pos++ = 1;
+ *pos++ = 1; /* destination count */
*pos++ = target_flags;
- }
- if (action != MPATH_RANN) {
memcpy(pos, target, ETH_ALEN);
pos += ETH_ALEN;
memcpy(pos, &target_sn, 4);
+ pos += 4;
+ } else if (action == MPATH_PREP) {
+ memcpy(pos, orig_addr, ETH_ALEN);
+ pos += ETH_ALEN;
+ memcpy(pos, &orig_sn, 4);
+ pos += 4;
}
ieee80211_tx_skb(sdata, skb);
@@ -224,9 +234,11 @@ int mesh_path_error_tx(u8 ttl, u8 *target, __le32 target_sn,
memcpy(mgmt->da, ra, ETH_ALEN);
memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
- /* BSSID is left zeroed, wildcard value */
- mgmt->u.action.category = WLAN_CATEGORY_MESH_PATH_SEL;
- mgmt->u.action.u.mesh_action.action_code = MESH_PATH_SEL_ACTION;
+ /* BSSID == SA */
+ memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
+ mgmt->u.action.category = WLAN_CATEGORY_MESH_ACTION;
+ mgmt->u.action.u.mesh_action.action_code =
+ WLAN_MESH_ACTION_HWMP_PATH_SELECTION;
ie_len = 15;
pos = skb_put(skb, 2 + ie_len);
*pos++ = WLAN_EID_PERR;
@@ -483,10 +495,10 @@ static void hwmp_preq_frame_process(struct ieee80211_sub_if_data *sdata,
orig_sn = PREQ_IE_ORIG_SN(preq_elem);
target_flags = PREQ_IE_TARGET_F(preq_elem);
- mhwmp_dbg("received PREQ from %pM\n", orig_addr);
+ mhwmp_dbg("received PREQ from %pM", orig_addr);
if (memcmp(target_addr, sdata->vif.addr, ETH_ALEN) == 0) {
- mhwmp_dbg("PREQ is for us\n");
+ mhwmp_dbg("PREQ is for us");
forward = false;
reply = true;
metric = 0;
@@ -522,7 +534,7 @@ static void hwmp_preq_frame_process(struct ieee80211_sub_if_data *sdata,
lifetime = PREQ_IE_LIFETIME(preq_elem);
ttl = ifmsh->mshcfg.element_ttl;
if (ttl != 0) {
- mhwmp_dbg("replying to the PREQ\n");
+ mhwmp_dbg("replying to the PREQ");
mesh_path_sel_frame_tx(MPATH_PREP, 0, target_addr,
cpu_to_le32(target_sn), 0, orig_addr,
cpu_to_le32(orig_sn), mgmt->sa, 0, ttl,
@@ -542,7 +554,7 @@ static void hwmp_preq_frame_process(struct ieee80211_sub_if_data *sdata,
ifmsh->mshstats.dropped_frames_ttl++;
return;
}
- mhwmp_dbg("forwarding the PREQ from %pM\n", orig_addr);
+ mhwmp_dbg("forwarding the PREQ from %pM", orig_addr);
--ttl;
flags = PREQ_IE_FLAGS(preq_elem);
preq_id = PREQ_IE_PREQ_ID(preq_elem);
@@ -577,7 +589,7 @@ static void hwmp_prep_frame_process(struct ieee80211_sub_if_data *sdata,
u8 next_hop[ETH_ALEN];
u32 target_sn, orig_sn, lifetime;
- mhwmp_dbg("received PREP from %pM\n", PREP_IE_ORIG_ADDR(prep_elem));
+ mhwmp_dbg("received PREP from %pM", PREP_IE_ORIG_ADDR(prep_elem));
/* Note that we divert from the draft nomenclature and denominate
* destination to what the draft refers to as origininator. So in this
@@ -683,6 +695,8 @@ static void hwmp_rann_frame_process(struct ieee80211_sub_if_data *sdata,
u8 ttl, flags, hopcount;
u8 *orig_addr;
u32 orig_sn, metric;
+ u32 interval = ifmsh->mshcfg.dot11MeshHWMPRannInterval;
+ bool root_is_gate;
ttl = rann->rann_ttl;
if (ttl <= 1) {
@@ -691,12 +705,19 @@ static void hwmp_rann_frame_process(struct ieee80211_sub_if_data *sdata,
}
ttl--;
flags = rann->rann_flags;
+ root_is_gate = !!(flags & RANN_FLAG_IS_GATE);
orig_addr = rann->rann_addr;
orig_sn = rann->rann_seq;
hopcount = rann->rann_hopcount;
hopcount++;
metric = rann->rann_metric;
- mhwmp_dbg("received RANN from %pM\n", orig_addr);
+
+ /* Ignore our own RANNs */
+ if (memcmp(orig_addr, sdata->vif.addr, ETH_ALEN) == 0)
+ return;
+
+ mhwmp_dbg("received RANN from %pM (is_gate=%d)", orig_addr,
+ root_is_gate);
rcu_read_lock();
mpath = mesh_path_lookup(orig_addr, sdata);
@@ -708,18 +729,28 @@ static void hwmp_rann_frame_process(struct ieee80211_sub_if_data *sdata,
sdata->u.mesh.mshstats.dropped_frames_no_route++;
return;
}
- mesh_queue_preq(mpath,
- PREQ_Q_F_START | PREQ_Q_F_REFRESH);
}
+
+ if ((!(mpath->flags & (MESH_PATH_ACTIVE | MESH_PATH_RESOLVING)) ||
+ time_after(jiffies, mpath->exp_time - 1*HZ)) &&
+ !(mpath->flags & MESH_PATH_FIXED)) {
+ mhwmp_dbg("%s time to refresh root mpath %pM", sdata->name,
+ orig_addr);
+ mesh_queue_preq(mpath, PREQ_Q_F_START | PREQ_Q_F_REFRESH);
+ }
+
if (mpath->sn < orig_sn) {
mesh_path_sel_frame_tx(MPATH_RANN, flags, orig_addr,
cpu_to_le32(orig_sn),
0, NULL, 0, broadcast_addr,
- hopcount, ttl, 0,
+ hopcount, ttl, cpu_to_le32(interval),
cpu_to_le32(metric + mpath->metric),
0, sdata);
mpath->sn = orig_sn;
}
+ if (root_is_gate)
+ mesh_path_add_gate(mpath);
+
rcu_read_unlock();
}
@@ -787,7 +818,7 @@ static void mesh_queue_preq(struct mesh_path *mpath, u8 flags)
preq_node = kmalloc(sizeof(struct mesh_preq_queue), GFP_ATOMIC);
if (!preq_node) {
- mhwmp_dbg("could not allocate PREQ node\n");
+ mhwmp_dbg("could not allocate PREQ node");
return;
}
@@ -796,7 +827,7 @@ static void mesh_queue_preq(struct mesh_path *mpath, u8 flags)
spin_unlock_bh(&ifmsh->mesh_preq_queue_lock);
kfree(preq_node);
if (printk_ratelimit())
- mhwmp_dbg("PREQ node queue full\n");
+ mhwmp_dbg("PREQ node queue full");
return;
}
@@ -981,35 +1012,46 @@ void mesh_path_timer(unsigned long data)
{
struct mesh_path *mpath = (void *) data;
struct ieee80211_sub_if_data *sdata = mpath->sdata;
+ int ret;
if (sdata->local->quiescing)
return;
spin_lock_bh(&mpath->state_lock);
if (mpath->flags & MESH_PATH_RESOLVED ||
- (!(mpath->flags & MESH_PATH_RESOLVING)))
+ (!(mpath->flags & MESH_PATH_RESOLVING))) {
mpath->flags &= ~(MESH_PATH_RESOLVING | MESH_PATH_RESOLVED);
- else if (mpath->discovery_retries < max_preq_retries(sdata)) {
+ spin_unlock_bh(&mpath->state_lock);
+ } else if (mpath->discovery_retries < max_preq_retries(sdata)) {
++mpath->discovery_retries;
mpath->discovery_timeout *= 2;
+ spin_unlock_bh(&mpath->state_lock);
mesh_queue_preq(mpath, 0);
} else {
mpath->flags = 0;
mpath->exp_time = jiffies;
- mesh_path_flush_pending(mpath);
+ spin_unlock_bh(&mpath->state_lock);
+ if (!mpath->is_gate && mesh_gate_num(sdata) > 0) {
+ ret = mesh_path_send_to_gates(mpath);
+ if (ret)
+ mhwmp_dbg("no gate was reachable");
+ } else
+ mesh_path_flush_pending(mpath);
}
-
- spin_unlock_bh(&mpath->state_lock);
}
void
mesh_path_tx_root_frame(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
+ u32 interval = ifmsh->mshcfg.dot11MeshHWMPRannInterval;
+ u8 flags;
- mesh_path_sel_frame_tx(MPATH_RANN, 0, sdata->vif.addr,
+ flags = (ifmsh->mshcfg.dot11MeshGateAnnouncementProtocol)
+ ? RANN_FLAG_IS_GATE : 0;
+ mesh_path_sel_frame_tx(MPATH_RANN, flags, sdata->vif.addr,
cpu_to_le32(++ifmsh->sn),
0, NULL, 0, broadcast_addr,
0, sdata->u.mesh.mshcfg.element_ttl,
- 0, 0, 0, sdata);
+ cpu_to_le32(interval), 0, 0, sdata);
}
diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c
index dc7ae8d..7fde321 100644
--- a/net/mac80211/mesh_pathtbl.c
+++ b/net/mac80211/mesh_pathtbl.c
@@ -17,6 +17,12 @@
#include "ieee80211_i.h"
#include "mesh.h"
+#ifdef CONFIG_MAC80211_VERBOSE_MPATH_DEBUG
+#define mpath_dbg(fmt, args...) printk(KERN_DEBUG fmt, ##args)
+#else
+#define mpath_dbg(fmt, args...) do { (void)(0); } while (0)
+#endif
+
/* There will be initially 2^INIT_PATHS_SIZE_ORDER buckets */
#define INIT_PATHS_SIZE_ORDER 2
@@ -60,6 +66,8 @@ static inline struct mesh_table *resize_dereference_mpp_paths(void)
lockdep_is_held(&pathtbl_resize_lock));
}
+static int mesh_gate_add(struct mesh_table *tbl, struct mesh_path *mpath);
+
/*
* CAREFUL -- "tbl" must not be an expression,
* in particular not an rcu_dereference(), since
@@ -103,6 +111,7 @@ static struct mesh_table *mesh_table_alloc(int size_order)
sizeof(newtbl->hash_rnd));
for (i = 0; i <= newtbl->hash_mask; i++)
spin_lock_init(&newtbl->hashwlock[i]);
+ spin_lock_init(&newtbl->gates_lock);
return newtbl;
}
@@ -118,6 +127,7 @@ static void mesh_table_free(struct mesh_table *tbl, bool free_leafs)
{
struct hlist_head *mesh_hash;
struct hlist_node *p, *q;
+ struct mpath_node *gate;
int i;
mesh_hash = tbl->hash_buckets;
@@ -129,6 +139,17 @@ static void mesh_table_free(struct mesh_table *tbl, bool free_leafs)
}
spin_unlock_bh(&tbl->hashwlock[i]);
}
+ if (free_leafs) {
+ spin_lock_bh(&tbl->gates_lock);
+ hlist_for_each_entry_safe(gate, p, q,
+ tbl->known_gates, list) {
+ hlist_del(&gate->list);
+ kfree(gate);
+ }
+ kfree(tbl->known_gates);
+ spin_unlock_bh(&tbl->gates_lock);
+ }
+
__mesh_table_free(tbl);
}
@@ -146,6 +167,7 @@ static int mesh_table_grow(struct mesh_table *oldtbl,
newtbl->free_node = oldtbl->free_node;
newtbl->mean_chain_len = oldtbl->mean_chain_len;
newtbl->copy_node = oldtbl->copy_node;
+ newtbl->known_gates = oldtbl->known_gates;
atomic_set(&newtbl->entries, atomic_read(&oldtbl->entries));
oldhash = oldtbl->hash_buckets;
@@ -205,6 +227,111 @@ void mesh_path_assign_nexthop(struct mesh_path *mpath, struct sta_info *sta)
spin_unlock_irqrestore(&mpath->frame_queue.lock, flags);
}
+static void prepare_for_gate(struct sk_buff *skb, char *dst_addr,
+ struct mesh_path *gate_mpath)
+{
+ struct ieee80211_hdr *hdr;
+ struct ieee80211s_hdr *mshdr;
+ int mesh_hdrlen, hdrlen;
+ char *next_hop;
+
+ hdr = (struct ieee80211_hdr *) skb->data;
+ hdrlen = ieee80211_hdrlen(hdr->frame_control);
+ mshdr = (struct ieee80211s_hdr *) (skb->data + hdrlen);
+
+ if (!(mshdr->flags & MESH_FLAGS_AE)) {
+ /* size of the fixed part of the mesh header */
+ mesh_hdrlen = 6;
+
+ /* make room for the two extended addresses */
+ skb_push(skb, 2 * ETH_ALEN);
+ memmove(skb->data, hdr, hdrlen + mesh_hdrlen);
+
+ hdr = (struct ieee80211_hdr *) skb->data;
+
+ /* we preserve the previous mesh header and only add
+ * the new addreses */
+ mshdr = (struct ieee80211s_hdr *) (skb->data + hdrlen);
+ mshdr->flags = MESH_FLAGS_AE_A5_A6;
+ memcpy(mshdr->eaddr1, hdr->addr3, ETH_ALEN);
+ memcpy(mshdr->eaddr2, hdr->addr4, ETH_ALEN);
+ }
+
+ /* update next hop */
+ hdr = (struct ieee80211_hdr *) skb->data;
+ rcu_read_lock();
+ next_hop = rcu_dereference(gate_mpath->next_hop)->sta.addr;
+ memcpy(hdr->addr1, next_hop, ETH_ALEN);
+ rcu_read_unlock();
+ memcpy(hdr->addr3, dst_addr, ETH_ALEN);
+}
+
+/**
+ *
+ * mesh_path_move_to_queue - Move or copy frames from one mpath queue to another
+ *
+ * This function is used to transfer or copy frames from an unresolved mpath to
+ * a gate mpath. The function also adds the Address Extension field and
+ * updates the next hop.
+ *
+ * If a frame already has an Address Extension field, only the next hop and
+ * destination addresses are updated.
+ *
+ * The gate mpath must be an active mpath with a valid mpath->next_hop.
+ *
+ * @mpath: An active mpath the frames will be sent to (i.e. the gate)
+ * @from_mpath: The failed mpath
+ * @copy: When true, copy all the frames to the new mpath queue. When false,
+ * move them.
+ */
+static void mesh_path_move_to_queue(struct mesh_path *gate_mpath,
+ struct mesh_path *from_mpath,
+ bool copy)
+{
+ struct sk_buff *skb, *cp_skb = NULL;
+ struct sk_buff_head gateq, failq;
+ unsigned long flags;
+ int num_skbs;
+
+ BUG_ON(gate_mpath == from_mpath);
+ BUG_ON(!gate_mpath->next_hop);
+
+ __skb_queue_head_init(&gateq);
+ __skb_queue_head_init(&failq);
+
+ spin_lock_irqsave(&from_mpath->frame_queue.lock, flags);
+ skb_queue_splice_init(&from_mpath->frame_queue, &failq);
+ spin_unlock_irqrestore(&from_mpath->frame_queue.lock, flags);
+
+ num_skbs = skb_queue_len(&failq);
+
+ while (num_skbs--) {
+ skb = __skb_dequeue(&failq);
+ if (copy)
+ cp_skb = skb_copy(skb, GFP_ATOMIC);
+
+ prepare_for_gate(skb, gate_mpath->dst, gate_mpath);
+ __skb_queue_tail(&gateq, skb);
+
+ if (copy && cp_skb)
+ __skb_queue_tail(&failq, cp_skb);
+ }
+
+ spin_lock_irqsave(&gate_mpath->frame_queue.lock, flags);
+ skb_queue_splice(&gateq, &gate_mpath->frame_queue);
+ mpath_dbg("Mpath queue for gate %pM has %d frames\n",
+ gate_mpath->dst,
+ skb_queue_len(&gate_mpath->frame_queue));
+ spin_unlock_irqrestore(&gate_mpath->frame_queue.lock, flags);
+
+ if (!copy)
+ return;
+
+ spin_lock_irqsave(&from_mpath->frame_queue.lock, flags);
+ skb_queue_splice(&failq, &from_mpath->frame_queue);
+ spin_unlock_irqrestore(&from_mpath->frame_queue.lock, flags);
+}
+
/**
* mesh_path_lookup - look up a path in the mesh path table
@@ -304,6 +431,109 @@ struct mesh_path *mesh_path_lookup_by_idx(int idx, struct ieee80211_sub_if_data
return NULL;
}
+static void mesh_gate_node_reclaim(struct rcu_head *rp)
+{
+ struct mpath_node *node = container_of(rp, struct mpath_node, rcu);
+ kfree(node);
+}
+
+/**
+ * mesh_gate_add - mark mpath as path to a mesh gate and add to known_gates
+ * @mesh_tbl: table which contains known_gates list
+ * @mpath: mpath to known mesh gate
+ *
+ * Returns: 0 on success
+ *
+ */
+static int mesh_gate_add(struct mesh_table *tbl, struct mesh_path *mpath)
+{
+ struct mpath_node *gate, *new_gate;
+ struct hlist_node *n;
+ int err;
+
+ rcu_read_lock();
+ tbl = rcu_dereference(tbl);
+
+ hlist_for_each_entry_rcu(gate, n, tbl->known_gates, list)
+ if (gate->mpath == mpath) {
+ err = -EEXIST;
+ goto err_rcu;
+ }
+
+ new_gate = kzalloc(sizeof(struct mpath_node), GFP_ATOMIC);
+ if (!new_gate) {
+ err = -ENOMEM;
+ goto err_rcu;
+ }
+
+ mpath->is_gate = true;
+ mpath->sdata->u.mesh.num_gates++;
+ new_gate->mpath = mpath;
+ spin_lock_bh(&tbl->gates_lock);
+ hlist_add_head_rcu(&new_gate->list, tbl->known_gates);
+ spin_unlock_bh(&tbl->gates_lock);
+ rcu_read_unlock();
+ mpath_dbg("Mesh path (%s): Recorded new gate: %pM. %d known gates\n",
+ mpath->sdata->name, mpath->dst,
+ mpath->sdata->u.mesh.num_gates);
+ return 0;
+err_rcu:
+ rcu_read_unlock();
+ return err;
+}
+
+/**
+ * mesh_gate_del - remove a mesh gate from the list of known gates
+ * @tbl: table which holds our list of known gates
+ * @mpath: gate mpath
+ *
+ * Returns: 0 on success
+ *
+ * Locking: must be called inside rcu_read_lock() section
+ */
+static int mesh_gate_del(struct mesh_table *tbl, struct mesh_path *mpath)
+{
+ struct mpath_node *gate;
+ struct hlist_node *p, *q;
+
+ tbl = rcu_dereference(tbl);
+
+ hlist_for_each_entry_safe(gate, p, q, tbl->known_gates, list)
+ if (gate->mpath == mpath) {
+ spin_lock_bh(&tbl->gates_lock);
+ hlist_del_rcu(&gate->list);
+ call_rcu(&gate->rcu, mesh_gate_node_reclaim);
+ spin_unlock_bh(&tbl->gates_lock);
+ mpath->sdata->u.mesh.num_gates--;
+ mpath->is_gate = false;
+ mpath_dbg("Mesh path (%s): Deleted gate: %pM. "
+ "%d known gates\n", mpath->sdata->name,
+ mpath->dst, mpath->sdata->u.mesh.num_gates);
+ break;
+ }
+
+ return 0;
+}
+
+/**
+ *
+ * mesh_path_add_gate - add the given mpath to a mesh gate to our path table
+ * @mpath: gate path to add to table
+ */
+int mesh_path_add_gate(struct mesh_path *mpath)
+{
+ return mesh_gate_add(mesh_paths, mpath);
+}
+
+/**
+ * mesh_gate_num - number of gates known to this interface
+ * @sdata: subif data
+ */
+int mesh_gate_num(struct ieee80211_sub_if_data *sdata)
+{
+ return sdata->u.mesh.num_gates;
+}
+
/**
* mesh_path_add - allocate and add a new path to the mesh path table
* @addr: destination address of the path (ETH_ALEN length)
@@ -481,6 +711,7 @@ int mpp_path_add(u8 *dst, u8 *mpp, struct ieee80211_sub_if_data *sdata)
new_mpath->flags = 0;
skb_queue_head_init(&new_mpath->frame_queue);
new_node->mpath = new_mpath;
+ init_timer(&new_mpath->timer);
new_mpath->exp_time = jiffies;
spin_lock_init(&new_mpath->state_lock);
@@ -539,6 +770,7 @@ void mesh_plink_broken(struct sta_info *sta)
struct hlist_node *p;
struct ieee80211_sub_if_data *sdata = sta->sdata;
int i;
+ __le16 reason = cpu_to_le16(WLAN_REASON_MESH_PATH_DEST_UNREACHABLE);
rcu_read_lock();
tbl = rcu_dereference(mesh_paths);
@@ -553,8 +785,7 @@ void mesh_plink_broken(struct sta_info *sta)
spin_unlock_bh(&mpath->state_lock);
mesh_path_error_tx(sdata->u.mesh.mshcfg.element_ttl,
mpath->dst, cpu_to_le32(mpath->sn),
- cpu_to_le16(PERR_RCODE_DEST_UNREACH),
- bcast, sdata);
+ reason, bcast, sdata);
} else
spin_unlock_bh(&mpath->state_lock);
}
@@ -647,12 +878,14 @@ int mesh_path_del(u8 *addr, struct ieee80211_sub_if_data *sdata)
mpath = node->mpath;
if (mpath->sdata == sdata &&
memcmp(addr, mpath->dst, ETH_ALEN) == 0) {
- spin_lock(&mpath->state_lock);
+ spin_lock_bh(&mpath->state_lock);
+ if (mpath->is_gate)
+ mesh_gate_del(tbl, mpath);
mpath->flags |= MESH_PATH_RESOLVING;
hlist_del_rcu(&node->list);
call_rcu(&node->rcu, mesh_path_node_reclaim);
atomic_dec(&tbl->entries);
- spin_unlock(&mpath->state_lock);
+ spin_unlock_bh(&mpath->state_lock);
goto enddel;
}
}
@@ -681,6 +914,58 @@ void mesh_path_tx_pending(struct mesh_path *mpath)
}
/**
+ * mesh_path_send_to_gates - sends pending frames to all known mesh gates
+ *
+ * @mpath: mesh path whose queue will be emptied
+ *
+ * If there is only one gate, the frames are transferred from the failed mpath
+ * queue to that gate's queue. If there are more than one gates, the frames
+ * are copied from each gate to the next. After frames are copied, the
+ * mpath queues are emptied onto the transmission queue.
+ */
+int mesh_path_send_to_gates(struct mesh_path *mpath)
+{
+ struct ieee80211_sub_if_data *sdata = mpath->sdata;
+ struct hlist_node *n;
+ struct mesh_table *tbl;
+ struct mesh_path *from_mpath = mpath;
+ struct mpath_node *gate = NULL;
+ bool copy = false;
+ struct hlist_head *known_gates;
+
+ rcu_read_lock();
+ tbl = rcu_dereference(mesh_paths);
+ known_gates = tbl->known_gates;
+ rcu_read_unlock();
+
+ if (!known_gates)
+ return -EHOSTUNREACH;
+
+ hlist_for_each_entry_rcu(gate, n, known_gates, list) {
+ if (gate->mpath->sdata != sdata)
+ continue;
+
+ if (gate->mpath->flags & MESH_PATH_ACTIVE) {
+ mpath_dbg("Forwarding to %pM\n", gate->mpath->dst);
+ mesh_path_move_to_queue(gate->mpath, from_mpath, copy);
+ from_mpath = gate->mpath;
+ copy = true;
+ } else {
+ mpath_dbg("Not forwarding %p\n", gate->mpath);
+ mpath_dbg("flags %x\n", gate->mpath->flags);
+ }
+ }
+
+ hlist_for_each_entry_rcu(gate, n, known_gates, list)
+ if (gate->mpath->sdata == sdata) {
+ mpath_dbg("Sending to %pM\n", gate->mpath->dst);
+ mesh_path_tx_pending(gate->mpath);
+ }
+
+ return (from_mpath == mpath) ? -EHOSTUNREACH : 0;
+}
+
+/**
* mesh_path_discard_frame - discard a frame whose path could not be resolved
*
* @skb: frame to discard
@@ -699,6 +984,7 @@ void mesh_path_discard_frame(struct sk_buff *skb,
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
struct mesh_path *mpath;
u32 sn = 0;
+ __le16 reason = cpu_to_le16(WLAN_REASON_MESH_PATH_NOFORWARD);
if (memcmp(hdr->addr4, sdata->vif.addr, ETH_ALEN) != 0) {
u8 *ra, *da;
@@ -709,8 +995,7 @@ void mesh_path_discard_frame(struct sk_buff *skb,
if (mpath)
sn = ++mpath->sn;
mesh_path_error_tx(sdata->u.mesh.mshcfg.element_ttl, skb->data,
- cpu_to_le32(sn),
- cpu_to_le16(PERR_RCODE_NO_ROUTE), ra, sdata);
+ cpu_to_le32(sn), reason, ra, sdata);
}
kfree_skb(skb);
@@ -728,8 +1013,7 @@ void mesh_path_flush_pending(struct mesh_path *mpath)
{
struct sk_buff *skb;
- while ((skb = skb_dequeue(&mpath->frame_queue)) &&
- (mpath->flags & MESH_PATH_ACTIVE))
+ while ((skb = skb_dequeue(&mpath->frame_queue)) != NULL)
mesh_path_discard_frame(skb, mpath->sdata);
}
@@ -797,6 +1081,9 @@ int mesh_pathtbl_init(void)
tbl_path->free_node = &mesh_path_node_free;
tbl_path->copy_node = &mesh_path_node_copy;
tbl_path->mean_chain_len = MEAN_CHAIN_LEN;
+ tbl_path->known_gates = kzalloc(sizeof(struct hlist_head), GFP_ATOMIC);
+ INIT_HLIST_HEAD(tbl_path->known_gates);
+
tbl_mpp = mesh_table_alloc(INIT_PATHS_SIZE_ORDER);
if (!tbl_mpp) {
@@ -806,6 +1093,8 @@ int mesh_pathtbl_init(void)
tbl_mpp->free_node = &mesh_path_node_free;
tbl_mpp->copy_node = &mesh_path_node_copy;
tbl_mpp->mean_chain_len = MEAN_CHAIN_LEN;
+ tbl_mpp->known_gates = kzalloc(sizeof(struct hlist_head), GFP_ATOMIC);
+ INIT_HLIST_HEAD(tbl_mpp->known_gates);
/* Need no locking since this is during init */
RCU_INIT_POINTER(mesh_paths, tbl_path);
diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c
index f4adc09..1a00d0f 100644
--- a/net/mac80211/mesh_plink.c
+++ b/net/mac80211/mesh_plink.c
@@ -19,35 +19,18 @@
#define mpl_dbg(fmt, args...) do { (void)(0); } while (0)
#endif
-#define PLINK_GET_LLID(p) (p + 4)
-#define PLINK_GET_PLID(p) (p + 6)
+#define PLINK_GET_LLID(p) (p + 2)
+#define PLINK_GET_PLID(p) (p + 4)
#define mod_plink_timer(s, t) (mod_timer(&s->plink_timer, \
jiffies + HZ * t / 1000))
-/* Peer link cancel reasons, all subject to ANA approval */
-#define MESH_LINK_CANCELLED 2
-#define MESH_MAX_NEIGHBORS 3
-#define MESH_CAPABILITY_POLICY_VIOLATION 4
-#define MESH_CLOSE_RCVD 5
-#define MESH_MAX_RETRIES 6
-#define MESH_CONFIRM_TIMEOUT 7
-#define MESH_SECURITY_ROLE_NEGOTIATION_DIFFERS 8
-#define MESH_SECURITY_AUTHENTICATION_IMPOSSIBLE 9
-#define MESH_SECURITY_FAILED_VERIFICATION 10
-
#define dot11MeshMaxRetries(s) (s->u.mesh.mshcfg.dot11MeshMaxRetries)
#define dot11MeshRetryTimeout(s) (s->u.mesh.mshcfg.dot11MeshRetryTimeout)
#define dot11MeshConfirmTimeout(s) (s->u.mesh.mshcfg.dot11MeshConfirmTimeout)
#define dot11MeshHoldingTimeout(s) (s->u.mesh.mshcfg.dot11MeshHoldingTimeout)
#define dot11MeshMaxPeerLinks(s) (s->u.mesh.mshcfg.dot11MeshMaxPeerLinks)
-enum plink_frame_type {
- PLINK_OPEN = 1,
- PLINK_CONFIRM,
- PLINK_CLOSE
-};
-
enum plink_event {
PLINK_UNDEFINED,
OPN_ACPT,
@@ -157,16 +140,16 @@ void mesh_plink_deactivate(struct sta_info *sta)
}
static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata,
- enum plink_frame_type action, u8 *da, __le16 llid, __le16 plid,
- __le16 reason) {
+ enum ieee80211_self_protected_actioncode action,
+ u8 *da, __le16 llid, __le16 plid, __le16 reason) {
struct ieee80211_local *local = sdata->local;
struct sk_buff *skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400 +
sdata->u.mesh.ie_len);
struct ieee80211_mgmt *mgmt;
bool include_plid = false;
- static const u8 meshpeeringproto[] = { 0x00, 0x0F, 0xAC, 0x2A };
+ int ie_len = 4;
+ u16 peering_proto = 0;
u8 *pos;
- int ie_len;
if (!skb)
return -1;
@@ -175,63 +158,75 @@ static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata,
* common action part (1)
*/
mgmt = (struct ieee80211_mgmt *)
- skb_put(skb, 25 + sizeof(mgmt->u.action.u.plink_action));
- memset(mgmt, 0, 25 + sizeof(mgmt->u.action.u.plink_action));
+ skb_put(skb, 25 + sizeof(mgmt->u.action.u.self_prot));
+ memset(mgmt, 0, 25 + sizeof(mgmt->u.action.u.self_prot));
mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
IEEE80211_STYPE_ACTION);
memcpy(mgmt->da, da, ETH_ALEN);
memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
- mgmt->u.action.category = WLAN_CATEGORY_MESH_ACTION;
- mgmt->u.action.u.plink_action.action_code = action;
-
- if (action == PLINK_CLOSE)
- mgmt->u.action.u.plink_action.aux = reason;
- else {
- mgmt->u.action.u.plink_action.aux = cpu_to_le16(0x0);
- if (action == PLINK_CONFIRM) {
- pos = skb_put(skb, 4);
- /* two-byte status code followed by two-byte AID */
- memset(pos, 0, 2);
+ mgmt->u.action.category = WLAN_CATEGORY_SELF_PROTECTED;
+ mgmt->u.action.u.self_prot.action_code = action;
+
+ if (action != WLAN_SP_MESH_PEERING_CLOSE) {
+ /* capability info */
+ pos = skb_put(skb, 2);
+ memset(pos, 0, 2);
+ if (action == WLAN_SP_MESH_PEERING_CONFIRM) {
+ /* AID */
+ pos = skb_put(skb, 2);
memcpy(pos + 2, &plid, 2);
}
- mesh_mgmt_ies_add(skb, sdata);
+ if (mesh_add_srates_ie(skb, sdata) ||
+ mesh_add_ext_srates_ie(skb, sdata) ||
+ mesh_add_rsn_ie(skb, sdata) ||
+ mesh_add_meshid_ie(skb, sdata) ||
+ mesh_add_meshconf_ie(skb, sdata))
+ return -1;
+ } else { /* WLAN_SP_MESH_PEERING_CLOSE */
+ if (mesh_add_meshid_ie(skb, sdata))
+ return -1;
}
- /* Add Peer Link Management element */
+ /* Add Mesh Peering Management element */
switch (action) {
- case PLINK_OPEN:
- ie_len = 6;
+ case WLAN_SP_MESH_PEERING_OPEN:
break;
- case PLINK_CONFIRM:
- ie_len = 8;
+ case WLAN_SP_MESH_PEERING_CONFIRM:
+ ie_len += 2;
include_plid = true;
break;
- case PLINK_CLOSE:
- default:
- if (!plid)
- ie_len = 8;
- else {
- ie_len = 10;
+ case WLAN_SP_MESH_PEERING_CLOSE:
+ if (plid) {
+ ie_len += 2;
include_plid = true;
}
+ ie_len += 2; /* reason code */
break;
+ default:
+ return -EINVAL;
}
+ if (WARN_ON(skb_tailroom(skb) < 2 + ie_len))
+ return -ENOMEM;
+
pos = skb_put(skb, 2 + ie_len);
- *pos++ = WLAN_EID_PEER_LINK;
+ *pos++ = WLAN_EID_PEER_MGMT;
*pos++ = ie_len;
- memcpy(pos, meshpeeringproto, sizeof(meshpeeringproto));
- pos += 4;
+ memcpy(pos, &peering_proto, 2);
+ pos += 2;
memcpy(pos, &llid, 2);
+ pos += 2;
if (include_plid) {
- pos += 2;
memcpy(pos, &plid, 2);
- }
- if (action == PLINK_CLOSE) {
pos += 2;
+ }
+ if (action == WLAN_SP_MESH_PEERING_CLOSE) {
memcpy(pos, &reason, 2);
+ pos += 2;
}
+ if (mesh_add_vendor_ies(skb, sdata))
+ return -1;
ieee80211_tx_skb(sdata, skb);
return 0;
@@ -322,21 +317,21 @@ static void mesh_plink_timer(unsigned long data)
++sta->plink_retries;
mod_plink_timer(sta, sta->plink_timeout);
spin_unlock_bh(&sta->lock);
- mesh_plink_frame_tx(sdata, PLINK_OPEN, sta->sta.addr, llid,
- 0, 0);
+ mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN,
+ sta->sta.addr, llid, 0, 0);
break;
}
- reason = cpu_to_le16(MESH_MAX_RETRIES);
+ reason = cpu_to_le16(WLAN_REASON_MESH_MAX_RETRIES);
/* fall through on else */
case NL80211_PLINK_CNF_RCVD:
/* confirm timer */
if (!reason)
- reason = cpu_to_le16(MESH_CONFIRM_TIMEOUT);
+ reason = cpu_to_le16(WLAN_REASON_MESH_CONFIRM_TIMEOUT);
sta->plink_state = NL80211_PLINK_HOLDING;
mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata));
spin_unlock_bh(&sta->lock);
- mesh_plink_frame_tx(sdata, PLINK_CLOSE, sta->sta.addr, llid, plid,
- reason);
+ mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
+ sta->sta.addr, llid, plid, reason);
break;
case NL80211_PLINK_HOLDING:
/* holding timer */
@@ -396,7 +391,7 @@ int mesh_plink_open(struct sta_info *sta)
mpl_dbg("Mesh plink: starting establishment with %pM\n",
sta->sta.addr);
- return mesh_plink_frame_tx(sdata, PLINK_OPEN,
+ return mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN,
sta->sta.addr, llid, 0, 0);
}
@@ -422,7 +417,7 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
struct ieee802_11_elems elems;
struct sta_info *sta;
enum plink_event event;
- enum plink_frame_type ftype;
+ enum ieee80211_self_protected_actioncode ftype;
size_t baselen;
bool deactivated, matches_local = true;
u8 ie_len;
@@ -449,14 +444,15 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
return;
}
- baseaddr = mgmt->u.action.u.plink_action.variable;
- baselen = (u8 *) mgmt->u.action.u.plink_action.variable - (u8 *) mgmt;
- if (mgmt->u.action.u.plink_action.action_code == PLINK_CONFIRM) {
+ baseaddr = mgmt->u.action.u.self_prot.variable;
+ baselen = (u8 *) mgmt->u.action.u.self_prot.variable - (u8 *) mgmt;
+ if (mgmt->u.action.u.self_prot.action_code ==
+ WLAN_SP_MESH_PEERING_CONFIRM) {
baseaddr += 4;
baselen += 4;
}
ieee802_11_parse_elems(baseaddr, len - baselen, &elems);
- if (!elems.peer_link) {
+ if (!elems.peering) {
mpl_dbg("Mesh plink: missing necessary peer link ie\n");
return;
}
@@ -466,31 +462,34 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
return;
}
- ftype = mgmt->u.action.u.plink_action.action_code;
- ie_len = elems.peer_link_len;
- if ((ftype == PLINK_OPEN && ie_len != 6) ||
- (ftype == PLINK_CONFIRM && ie_len != 8) ||
- (ftype == PLINK_CLOSE && ie_len != 8 && ie_len != 10)) {
+ ftype = mgmt->u.action.u.self_prot.action_code;
+ ie_len = elems.peering_len;
+ if ((ftype == WLAN_SP_MESH_PEERING_OPEN && ie_len != 4) ||
+ (ftype == WLAN_SP_MESH_PEERING_CONFIRM && ie_len != 6) ||
+ (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len != 6
+ && ie_len != 8)) {
mpl_dbg("Mesh plink: incorrect plink ie length %d %d\n",
ftype, ie_len);
return;
}
- if (ftype != PLINK_CLOSE && (!elems.mesh_id || !elems.mesh_config)) {
+ if (ftype != WLAN_SP_MESH_PEERING_CLOSE &&
+ (!elems.mesh_id || !elems.mesh_config)) {
mpl_dbg("Mesh plink: missing necessary ie\n");
return;
}
/* Note the lines below are correct, the llid in the frame is the plid
* from the point of view of this host.
*/
- memcpy(&plid, PLINK_GET_LLID(elems.peer_link), 2);
- if (ftype == PLINK_CONFIRM || (ftype == PLINK_CLOSE && ie_len == 10))
- memcpy(&llid, PLINK_GET_PLID(elems.peer_link), 2);
+ memcpy(&plid, PLINK_GET_LLID(elems.peering), 2);
+ if (ftype == WLAN_SP_MESH_PEERING_CONFIRM ||
+ (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len == 8))
+ memcpy(&llid, PLINK_GET_PLID(elems.peering), 2);
rcu_read_lock();
sta = sta_info_get(sdata, mgmt->sa);
- if (!sta && ftype != PLINK_OPEN) {
+ if (!sta && ftype != WLAN_SP_MESH_PEERING_OPEN) {
mpl_dbg("Mesh plink: cls or cnf from unknown peer\n");
rcu_read_unlock();
return;
@@ -509,30 +508,30 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
/* Now we will figure out the appropriate event... */
event = PLINK_UNDEFINED;
- if (ftype != PLINK_CLOSE && (!mesh_matches_local(&elems, sdata))) {
+ if (ftype != WLAN_SP_MESH_PEERING_CLOSE &&
+ (!mesh_matches_local(&elems, sdata))) {
matches_local = false;
switch (ftype) {
- case PLINK_OPEN:
+ case WLAN_SP_MESH_PEERING_OPEN:
event = OPN_RJCT;
break;
- case PLINK_CONFIRM:
+ case WLAN_SP_MESH_PEERING_CONFIRM:
event = CNF_RJCT;
break;
- case PLINK_CLOSE:
- /* avoid warning */
+ default:
break;
}
}
if (!sta && !matches_local) {
rcu_read_unlock();
- reason = cpu_to_le16(MESH_CAPABILITY_POLICY_VIOLATION);
+ reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG);
llid = 0;
- mesh_plink_frame_tx(sdata, PLINK_CLOSE, mgmt->sa, llid,
- plid, reason);
+ mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
+ mgmt->sa, llid, plid, reason);
return;
} else if (!sta) {
- /* ftype == PLINK_OPEN */
+ /* ftype == WLAN_SP_MESH_PEERING_OPEN */
u32 rates;
rcu_read_unlock();
@@ -557,21 +556,21 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
} else if (matches_local) {
spin_lock_bh(&sta->lock);
switch (ftype) {
- case PLINK_OPEN:
+ case WLAN_SP_MESH_PEERING_OPEN:
if (!mesh_plink_free_count(sdata) ||
(sta->plid && sta->plid != plid))
event = OPN_IGNR;
else
event = OPN_ACPT;
break;
- case PLINK_CONFIRM:
+ case WLAN_SP_MESH_PEERING_CONFIRM:
if (!mesh_plink_free_count(sdata) ||
(sta->llid != llid || sta->plid != plid))
event = CNF_IGNR;
else
event = CNF_ACPT;
break;
- case PLINK_CLOSE:
+ case WLAN_SP_MESH_PEERING_CLOSE:
if (sta->plink_state == NL80211_PLINK_ESTAB)
/* Do not check for llid or plid. This does not
* follow the standard but since multiple plinks
@@ -620,10 +619,12 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
sta->llid = llid;
mesh_plink_timer_set(sta, dot11MeshRetryTimeout(sdata));
spin_unlock_bh(&sta->lock);
- mesh_plink_frame_tx(sdata, PLINK_OPEN, sta->sta.addr, llid,
- 0, 0);
- mesh_plink_frame_tx(sdata, PLINK_CONFIRM, sta->sta.addr,
- llid, plid, 0);
+ mesh_plink_frame_tx(sdata,
+ WLAN_SP_MESH_PEERING_OPEN,
+ sta->sta.addr, llid, 0, 0);
+ mesh_plink_frame_tx(sdata,
+ WLAN_SP_MESH_PEERING_CONFIRM,
+ sta->sta.addr, llid, plid, 0);
break;
default:
spin_unlock_bh(&sta->lock);
@@ -635,10 +636,10 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
switch (event) {
case OPN_RJCT:
case CNF_RJCT:
- reason = cpu_to_le16(MESH_CAPABILITY_POLICY_VIOLATION);
+ reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG);
case CLS_ACPT:
if (!reason)
- reason = cpu_to_le16(MESH_CLOSE_RCVD);
+ reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE);
sta->reason = reason;
sta->plink_state = NL80211_PLINK_HOLDING;
if (!mod_plink_timer(sta,
@@ -647,8 +648,9 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
llid = sta->llid;
spin_unlock_bh(&sta->lock);
- mesh_plink_frame_tx(sdata, PLINK_CLOSE, sta->sta.addr, llid,
- plid, reason);
+ mesh_plink_frame_tx(sdata,
+ WLAN_SP_MESH_PEERING_CLOSE,
+ sta->sta.addr, llid, plid, reason);
break;
case OPN_ACPT:
/* retry timer is left untouched */
@@ -656,8 +658,9 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
sta->plid = plid;
llid = sta->llid;
spin_unlock_bh(&sta->lock);
- mesh_plink_frame_tx(sdata, PLINK_CONFIRM, sta->sta.addr, llid,
- plid, 0);
+ mesh_plink_frame_tx(sdata,
+ WLAN_SP_MESH_PEERING_CONFIRM,
+ sta->sta.addr, llid, plid, 0);
break;
case CNF_ACPT:
sta->plink_state = NL80211_PLINK_CNF_RCVD;
@@ -677,10 +680,10 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
switch (event) {
case OPN_RJCT:
case CNF_RJCT:
- reason = cpu_to_le16(MESH_CAPABILITY_POLICY_VIOLATION);
+ reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG);
case CLS_ACPT:
if (!reason)
- reason = cpu_to_le16(MESH_CLOSE_RCVD);
+ reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE);
sta->reason = reason;
sta->plink_state = NL80211_PLINK_HOLDING;
if (!mod_plink_timer(sta,
@@ -689,14 +692,15 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
llid = sta->llid;
spin_unlock_bh(&sta->lock);
- mesh_plink_frame_tx(sdata, PLINK_CLOSE, sta->sta.addr, llid,
- plid, reason);
+ mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
+ sta->sta.addr, llid, plid, reason);
break;
case OPN_ACPT:
llid = sta->llid;
spin_unlock_bh(&sta->lock);
- mesh_plink_frame_tx(sdata, PLINK_CONFIRM, sta->sta.addr, llid,
- plid, 0);
+ mesh_plink_frame_tx(sdata,
+ WLAN_SP_MESH_PEERING_CONFIRM,
+ sta->sta.addr, llid, plid, 0);
break;
case CNF_ACPT:
del_timer(&sta->plink_timer);
@@ -717,10 +721,10 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
switch (event) {
case OPN_RJCT:
case CNF_RJCT:
- reason = cpu_to_le16(MESH_CAPABILITY_POLICY_VIOLATION);
+ reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG);
case CLS_ACPT:
if (!reason)
- reason = cpu_to_le16(MESH_CLOSE_RCVD);
+ reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE);
sta->reason = reason;
sta->plink_state = NL80211_PLINK_HOLDING;
if (!mod_plink_timer(sta,
@@ -729,8 +733,9 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
llid = sta->llid;
spin_unlock_bh(&sta->lock);
- mesh_plink_frame_tx(sdata, PLINK_CLOSE, sta->sta.addr, llid,
- plid, reason);
+ mesh_plink_frame_tx(sdata,
+ WLAN_SP_MESH_PEERING_CLOSE,
+ sta->sta.addr, llid, plid, reason);
break;
case OPN_ACPT:
del_timer(&sta->plink_timer);
@@ -740,8 +745,9 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
mpl_dbg("Mesh plink with %pM ESTABLISHED\n",
sta->sta.addr);
- mesh_plink_frame_tx(sdata, PLINK_CONFIRM, sta->sta.addr, llid,
- plid, 0);
+ mesh_plink_frame_tx(sdata,
+ WLAN_SP_MESH_PEERING_CONFIRM,
+ sta->sta.addr, llid, plid, 0);
break;
default:
spin_unlock_bh(&sta->lock);
@@ -752,7 +758,7 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
case NL80211_PLINK_ESTAB:
switch (event) {
case CLS_ACPT:
- reason = cpu_to_le16(MESH_CLOSE_RCVD);
+ reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE);
sta->reason = reason;
deactivated = __mesh_plink_deactivate(sta);
sta->plink_state = NL80211_PLINK_HOLDING;
@@ -761,14 +767,15 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
spin_unlock_bh(&sta->lock);
if (deactivated)
ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
- mesh_plink_frame_tx(sdata, PLINK_CLOSE, sta->sta.addr, llid,
- plid, reason);
+ mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
+ sta->sta.addr, llid, plid, reason);
break;
case OPN_ACPT:
llid = sta->llid;
spin_unlock_bh(&sta->lock);
- mesh_plink_frame_tx(sdata, PLINK_CONFIRM, sta->sta.addr, llid,
- plid, 0);
+ mesh_plink_frame_tx(sdata,
+ WLAN_SP_MESH_PEERING_CONFIRM,
+ sta->sta.addr, llid, plid, 0);
break;
default:
spin_unlock_bh(&sta->lock);
@@ -790,8 +797,8 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
llid = sta->llid;
reason = sta->reason;
spin_unlock_bh(&sta->lock);
- mesh_plink_frame_tx(sdata, PLINK_CLOSE, sta->sta.addr,
- llid, plid, reason);
+ mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
+ sta->sta.addr, llid, plid, reason);
break;
default:
spin_unlock_bh(&sta->lock);
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index d6470c7..60a6f27 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -1482,10 +1482,14 @@ static bool ieee80211_assoc_success(struct ieee80211_work *wk,
ifmgd->aid = aid;
- sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL);
- if (!sta) {
- printk(KERN_DEBUG "%s: failed to alloc STA entry for"
- " the AP\n", sdata->name);
+ mutex_lock(&sdata->local->sta_mtx);
+ /*
+ * station info was already allocated and inserted before
+ * the association and should be available to us
+ */
+ sta = sta_info_get_rx(sdata, cbss->bssid);
+ if (WARN_ON(!sta)) {
+ mutex_unlock(&sdata->local->sta_mtx);
return false;
}
@@ -1556,7 +1560,8 @@ static bool ieee80211_assoc_success(struct ieee80211_work *wk,
if (elems.wmm_param)
set_sta_flags(sta, WLAN_STA_WME);
- err = sta_info_insert(sta);
+ /* sta_info_reinsert will also unlock the mutex lock */
+ err = sta_info_reinsert(sta);
sta = NULL;
if (err) {
printk(KERN_DEBUG "%s: failed to insert STA entry for"
@@ -2429,6 +2434,32 @@ int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
return 0;
}
+/* create and insert a dummy station entry */
+static int ieee80211_pre_assoc(struct ieee80211_sub_if_data *sdata,
+ u8 *bssid) {
+ struct sta_info *sta;
+ int err;
+
+ sta = sta_info_alloc(sdata, bssid, GFP_KERNEL);
+ if (!sta) {
+ printk(KERN_DEBUG "%s: failed to alloc STA entry for"
+ " the AP\n", sdata->name);
+ return -ENOMEM;
+ }
+
+ sta->dummy = true;
+
+ err = sta_info_insert(sta);
+ sta = NULL;
+ if (err) {
+ printk(KERN_DEBUG "%s: failed to insert Dummy STA entry for"
+ " the AP (error %d)\n", sdata->name, err);
+ return err;
+ }
+
+ return 0;
+}
+
static enum work_done_result ieee80211_assoc_done(struct ieee80211_work *wk,
struct sk_buff *skb)
{
@@ -2436,9 +2467,11 @@ static enum work_done_result ieee80211_assoc_done(struct ieee80211_work *wk,
struct ieee80211_mgmt *mgmt;
struct ieee80211_rx_status *rx_status;
struct ieee802_11_elems elems;
+ struct cfg80211_bss *cbss = wk->assoc.bss;
u16 status;
if (!skb) {
+ sta_info_destroy_addr(wk->sdata, cbss->bssid);
cfg80211_send_assoc_timeout(wk->sdata->dev, wk->filter_ta);
goto destroy;
}
@@ -2468,12 +2501,16 @@ static enum work_done_result ieee80211_assoc_done(struct ieee80211_work *wk,
if (!ieee80211_assoc_success(wk, mgmt, skb->len)) {
mutex_unlock(&wk->sdata->u.mgd.mtx);
/* oops -- internal error -- send timeout for now */
+ sta_info_destroy_addr(wk->sdata, cbss->bssid);
cfg80211_send_assoc_timeout(wk->sdata->dev,
wk->filter_ta);
return WORK_DONE_DESTROY;
}
mutex_unlock(&wk->sdata->u.mgd.mtx);
+ } else {
+ /* assoc failed - destroy the dummy station entry */
+ sta_info_destroy_addr(wk->sdata, cbss->bssid);
}
cfg80211_send_rx_assoc(wk->sdata->dev, skb->data, skb->len);
@@ -2492,7 +2529,7 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
struct ieee80211_bss *bss = (void *)req->bss->priv;
struct ieee80211_work *wk;
const u8 *ssid;
- int i;
+ int i, err;
mutex_lock(&ifmgd->mtx);
if (ifmgd->associated) {
@@ -2517,6 +2554,16 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
if (!wk)
return -ENOMEM;
+ /*
+ * create a dummy station info entry in order
+ * to start accepting incoming EAPOL packets from the station
+ */
+ err = ieee80211_pre_assoc(sdata, req->bss->bssid);
+ if (err) {
+ kfree(wk);
+ return err;
+ }
+
ifmgd->flags &= ~IEEE80211_STA_DISABLE_11N;
ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED;
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index fe2c2a7..f45fd2f 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -850,8 +850,21 @@ ieee80211_rx_h_check(struct ieee80211_rx_data *rx)
ieee80211_is_pspoll(hdr->frame_control)) &&
rx->sdata->vif.type != NL80211_IFTYPE_ADHOC &&
rx->sdata->vif.type != NL80211_IFTYPE_WDS &&
- (!rx->sta || !test_sta_flags(rx->sta, WLAN_STA_ASSOC))))
+ (!rx->sta || !test_sta_flags(rx->sta, WLAN_STA_ASSOC)))) {
+ if (rx->sta && rx->sta->dummy &&
+ ieee80211_is_data_present(hdr->frame_control)) {
+ u16 ethertype;
+ u8 *payload;
+
+ payload = rx->skb->data +
+ ieee80211_hdrlen(hdr->frame_control);
+ ethertype = (payload[6] << 8) | payload[7];
+ if (cpu_to_be16(ethertype) ==
+ rx->sdata->control_port_protocol)
+ return RX_CONTINUE;
+ }
return RX_DROP_MONITOR;
+ }
return RX_CONTINUE;
}
@@ -2220,12 +2233,29 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx)
goto handled;
}
break;
+ case WLAN_CATEGORY_SELF_PROTECTED:
+ switch (mgmt->u.action.u.self_prot.action_code) {
+ case WLAN_SP_MESH_PEERING_OPEN:
+ case WLAN_SP_MESH_PEERING_CLOSE:
+ case WLAN_SP_MESH_PEERING_CONFIRM:
+ if (!ieee80211_vif_is_mesh(&sdata->vif))
+ goto invalid;
+ if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
+ /* userspace handles this frame */
+ break;
+ goto queue;
+ case WLAN_SP_MGK_INFORM:
+ case WLAN_SP_MGK_ACK:
+ if (!ieee80211_vif_is_mesh(&sdata->vif))
+ goto invalid;
+ break;
+ }
+ break;
case WLAN_CATEGORY_MESH_ACTION:
if (!ieee80211_vif_is_mesh(&sdata->vif))
break;
- goto queue;
- case WLAN_CATEGORY_MESH_PATH_SEL:
- if (!mesh_path_sel_is_hwmp(sdata))
+ if (mesh_action_is_path_sel(mgmt) &&
+ (!mesh_path_sel_is_hwmp(sdata)))
break;
goto queue;
}
@@ -2686,7 +2716,9 @@ static int prepare_for_handlers(struct ieee80211_rx_data *rx,
} else if (!ieee80211_bssid_match(bssid,
sdata->vif.addr)) {
if (!(status->rx_flags & IEEE80211_RX_IN_SCAN) &&
- !ieee80211_is_beacon(hdr->frame_control))
+ !ieee80211_is_beacon(hdr->frame_control) &&
+ !(ieee80211_is_action(hdr->frame_control) &&
+ sdata->vif.p2p))
return 0;
status->rx_flags &= ~IEEE80211_RX_RA_MATCH;
}
@@ -2791,7 +2823,7 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw,
if (ieee80211_is_data(fc)) {
prev_sta = NULL;
- for_each_sta_info(local, hdr->addr2, sta, tmp) {
+ for_each_sta_info_rx(local, hdr->addr2, sta, tmp) {
if (!prev_sta) {
prev_sta = sta;
continue;
@@ -2835,7 +2867,7 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw,
continue;
}
- rx.sta = sta_info_get_bss(prev, hdr->addr2);
+ rx.sta = sta_info_get_bss_rx(prev, hdr->addr2);
rx.sdata = prev;
ieee80211_prepare_and_rx_handle(&rx, skb, false);
@@ -2843,7 +2875,7 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw,
}
if (prev) {
- rx.sta = sta_info_get_bss(prev, hdr->addr2);
+ rx.sta = sta_info_get_bss_rx(prev, hdr->addr2);
rx.sdata = prev;
if (ieee80211_prepare_and_rx_handle(&rx, skb, true))
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 0bdbf3b8..6bc17fb 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -100,6 +100,27 @@ struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata,
lockdep_is_held(&local->sta_lock) ||
lockdep_is_held(&local->sta_mtx));
while (sta) {
+ if (sta->sdata == sdata && !sta->dummy &&
+ memcmp(sta->sta.addr, addr, ETH_ALEN) == 0)
+ break;
+ sta = rcu_dereference_check(sta->hnext,
+ lockdep_is_held(&local->sta_lock) ||
+ lockdep_is_held(&local->sta_mtx));
+ }
+ return sta;
+}
+
+/* get a station info entry even if it is a dummy station*/
+struct sta_info *sta_info_get_rx(struct ieee80211_sub_if_data *sdata,
+ const u8 *addr)
+{
+ struct ieee80211_local *local = sdata->local;
+ struct sta_info *sta;
+
+ sta = rcu_dereference_check(local->sta_hash[STA_HASH(addr)],
+ lockdep_is_held(&local->sta_lock) ||
+ lockdep_is_held(&local->sta_mtx));
+ while (sta) {
if (sta->sdata == sdata &&
memcmp(sta->sta.addr, addr, ETH_ALEN) == 0)
break;
@@ -126,6 +147,32 @@ struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata,
while (sta) {
if ((sta->sdata == sdata ||
(sta->sdata->bss && sta->sdata->bss == sdata->bss)) &&
+ !sta->dummy &&
+ memcmp(sta->sta.addr, addr, ETH_ALEN) == 0)
+ break;
+ sta = rcu_dereference_check(sta->hnext,
+ lockdep_is_held(&local->sta_lock) ||
+ lockdep_is_held(&local->sta_mtx));
+ }
+ return sta;
+}
+
+/*
+ * Get sta info either from the specified interface
+ * or from one of its vlans (including dummy stations)
+ */
+struct sta_info *sta_info_get_bss_rx(struct ieee80211_sub_if_data *sdata,
+ const u8 *addr)
+{
+ struct ieee80211_local *local = sdata->local;
+ struct sta_info *sta;
+
+ sta = rcu_dereference_check(local->sta_hash[STA_HASH(addr)],
+ lockdep_is_held(&local->sta_lock) ||
+ lockdep_is_held(&local->sta_mtx));
+ while (sta) {
+ if ((sta->sdata == sdata ||
+ (sta->sdata->bss && sta->sdata->bss == sdata->bss)) &&
memcmp(sta->sta.addr, addr, ETH_ALEN) == 0)
break;
sta = rcu_dereference_check(sta->hnext,
@@ -280,7 +327,8 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
return sta;
}
-static int sta_info_finish_insert(struct sta_info *sta, bool async)
+static int sta_info_finish_insert(struct sta_info *sta,
+ bool async, bool dummy_reinsert)
{
struct ieee80211_local *local = sta->local;
struct ieee80211_sub_if_data *sdata = sta->sdata;
@@ -290,51 +338,58 @@ static int sta_info_finish_insert(struct sta_info *sta, bool async)
lockdep_assert_held(&local->sta_mtx);
- /* notify driver */
- if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
- sdata = container_of(sdata->bss,
- struct ieee80211_sub_if_data,
- u.ap);
- err = drv_sta_add(local, sdata, &sta->sta);
- if (err) {
- if (!async)
- return err;
- printk(KERN_DEBUG "%s: failed to add IBSS STA %pM to driver (%d)"
- " - keeping it anyway.\n",
- sdata->name, sta->sta.addr, err);
- } else {
- sta->uploaded = true;
+ if (!sta->dummy || dummy_reinsert) {
+ /* notify driver */
+ if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
+ sdata = container_of(sdata->bss,
+ struct ieee80211_sub_if_data,
+ u.ap);
+ err = drv_sta_add(local, sdata, &sta->sta);
+ if (err) {
+ if (!async)
+ return err;
+ printk(KERN_DEBUG "%s: failed to add IBSS STA %pM to "
+ "driver (%d) - keeping it anyway.\n",
+ sdata->name, sta->sta.addr, err);
+ } else {
+ sta->uploaded = true;
#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- if (async)
- wiphy_debug(local->hw.wiphy,
- "Finished adding IBSS STA %pM\n",
- sta->sta.addr);
+ if (async)
+ wiphy_debug(local->hw.wiphy,
+ "Finished adding IBSS STA %pM\n",
+ sta->sta.addr);
#endif
+ }
+
+ sdata = sta->sdata;
}
- sdata = sta->sdata;
+ if (!dummy_reinsert) {
+ if (!async) {
+ local->num_sta++;
+ local->sta_generation++;
+ smp_mb();
- if (!async) {
- local->num_sta++;
- local->sta_generation++;
- smp_mb();
+ /* make the station visible */
+ spin_lock_irqsave(&local->sta_lock, flags);
+ sta_info_hash_add(local, sta);
+ spin_unlock_irqrestore(&local->sta_lock, flags);
+ }
- /* make the station visible */
- spin_lock_irqsave(&local->sta_lock, flags);
- sta_info_hash_add(local, sta);
- spin_unlock_irqrestore(&local->sta_lock, flags);
+ list_add(&sta->list, &local->sta_list);
+ } else {
+ sta->dummy = false;
}
- list_add(&sta->list, &local->sta_list);
-
- ieee80211_sta_debugfs_add(sta);
- rate_control_add_sta_debugfs(sta);
-
- memset(&sinfo, 0, sizeof(sinfo));
- sinfo.filled = 0;
- sinfo.generation = local->sta_generation;
- cfg80211_new_sta(sdata->dev, sta->sta.addr, &sinfo, GFP_KERNEL);
+ if (!sta->dummy) {
+ ieee80211_sta_debugfs_add(sta);
+ rate_control_add_sta_debugfs(sta);
+ memset(&sinfo, 0, sizeof(sinfo));
+ sinfo.filled = 0;
+ sinfo.generation = local->sta_generation;
+ cfg80211_new_sta(sdata->dev, sta->sta.addr, &sinfo, GFP_KERNEL);
+ }
return 0;
}
@@ -351,7 +406,7 @@ static void sta_info_finish_pending(struct ieee80211_local *local)
list_del(&sta->list);
spin_unlock_irqrestore(&local->sta_lock, flags);
- sta_info_finish_insert(sta, true);
+ sta_info_finish_insert(sta, true, false);
spin_lock_irqsave(&local->sta_lock, flags);
}
@@ -368,106 +423,117 @@ static void sta_info_finish_work(struct work_struct *work)
mutex_unlock(&local->sta_mtx);
}
-int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU)
+static int sta_info_insert_check(struct sta_info *sta)
{
- struct ieee80211_local *local = sta->local;
struct ieee80211_sub_if_data *sdata = sta->sdata;
- unsigned long flags;
- int err = 0;
/*
* Can't be a WARN_ON because it can be triggered through a race:
* something inserts a STA (on one CPU) without holding the RTNL
* and another CPU turns off the net device.
*/
- if (unlikely(!ieee80211_sdata_running(sdata))) {
- err = -ENETDOWN;
- rcu_read_lock();
- goto out_free;
- }
+ if (unlikely(!ieee80211_sdata_running(sdata)))
+ return -ENETDOWN;
if (WARN_ON(compare_ether_addr(sta->sta.addr, sdata->vif.addr) == 0 ||
- is_multicast_ether_addr(sta->sta.addr))) {
- err = -EINVAL;
+ is_multicast_ether_addr(sta->sta.addr)))
+ return -EINVAL;
+
+ return 0;
+}
+
+static int sta_info_insert_ibss(struct sta_info *sta) __acquires(RCU)
+{
+ struct ieee80211_local *local = sta->local;
+ struct ieee80211_sub_if_data *sdata = sta->sdata;
+ unsigned long flags;
+
+ spin_lock_irqsave(&local->sta_lock, flags);
+ /* check if STA exists already */
+ if (sta_info_get_bss_rx(sdata, sta->sta.addr)) {
+ spin_unlock_irqrestore(&local->sta_lock, flags);
rcu_read_lock();
- goto out_free;
+ return -EEXIST;
}
- /*
- * In ad-hoc mode, we sometimes need to insert stations
- * from tasklet context from the RX path. To avoid races,
- * always do so in that case -- see the comment below.
- */
- if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
- spin_lock_irqsave(&local->sta_lock, flags);
- /* check if STA exists already */
- if (sta_info_get_bss(sdata, sta->sta.addr)) {
- spin_unlock_irqrestore(&local->sta_lock, flags);
- rcu_read_lock();
- err = -EEXIST;
- goto out_free;
- }
-
- local->num_sta++;
- local->sta_generation++;
- smp_mb();
- sta_info_hash_add(local, sta);
+ local->num_sta++;
+ local->sta_generation++;
+ smp_mb();
+ sta_info_hash_add(local, sta);
- list_add_tail(&sta->list, &local->sta_pending_list);
+ list_add_tail(&sta->list, &local->sta_pending_list);
- rcu_read_lock();
- spin_unlock_irqrestore(&local->sta_lock, flags);
+ rcu_read_lock();
+ spin_unlock_irqrestore(&local->sta_lock, flags);
#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- wiphy_debug(local->hw.wiphy, "Added IBSS STA %pM\n",
- sta->sta.addr);
+ wiphy_debug(local->hw.wiphy, "Added IBSS STA %pM\n",
+ sta->sta.addr);
#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
- ieee80211_queue_work(&local->hw, &local->sta_finish_work);
+ ieee80211_queue_work(&local->hw, &local->sta_finish_work);
- return 0;
- }
+ return 0;
+}
+
+/*
+ * should be called with sta_mtx locked
+ * this function replaces the mutex lock
+ * with a RCU lock
+ */
+static int sta_info_insert_non_ibss(struct sta_info *sta) __acquires(RCU)
+{
+ struct ieee80211_local *local = sta->local;
+ struct ieee80211_sub_if_data *sdata = sta->sdata;
+ unsigned long flags;
+ struct sta_info *exist_sta;
+ bool dummy_reinsert = false;
+ int err = 0;
+
+ lockdep_assert_held(&local->sta_mtx);
/*
* On first glance, this will look racy, because the code
- * below this point, which inserts a station with sleeping,
+ * in this function, which inserts a station with sleeping,
* unlocks the sta_lock between checking existence in the
* hash table and inserting into it.
*
* However, it is not racy against itself because it keeps
- * the mutex locked. It still seems to race against the
- * above code that atomically inserts the station... That,
- * however, is not true because the above code can only
- * be invoked for IBSS interfaces, and the below code will
- * not be -- and the two do not race against each other as
- * the hash table also keys off the interface.
+ * the mutex locked.
*/
- might_sleep();
-
- mutex_lock(&local->sta_mtx);
-
spin_lock_irqsave(&local->sta_lock, flags);
- /* check if STA exists already */
- if (sta_info_get_bss(sdata, sta->sta.addr)) {
- spin_unlock_irqrestore(&local->sta_lock, flags);
- mutex_unlock(&local->sta_mtx);
- rcu_read_lock();
- err = -EEXIST;
- goto out_free;
+ /*
+ * check if STA exists already.
+ * only accept a scenario of a second call to sta_info_insert_non_ibss
+ * with a dummy station entry that was inserted earlier
+ * in that case - assume that the dummy station flag should
+ * be removed.
+ */
+ exist_sta = sta_info_get_bss_rx(sdata, sta->sta.addr);
+ if (exist_sta) {
+ if (exist_sta == sta && sta->dummy) {
+ dummy_reinsert = true;
+ } else {
+ spin_unlock_irqrestore(&local->sta_lock, flags);
+ mutex_unlock(&local->sta_mtx);
+ rcu_read_lock();
+ return -EEXIST;
+ }
}
spin_unlock_irqrestore(&local->sta_lock, flags);
- err = sta_info_finish_insert(sta, false);
+ err = sta_info_finish_insert(sta, false, dummy_reinsert);
if (err) {
mutex_unlock(&local->sta_mtx);
rcu_read_lock();
- goto out_free;
+ return err;
}
#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- wiphy_debug(local->hw.wiphy, "Inserted STA %pM\n", sta->sta.addr);
+ wiphy_debug(local->hw.wiphy, "Inserted %sSTA %pM\n",
+ sta->dummy ? "dummy " : "", sta->sta.addr);
#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
/* move reference to rcu-protected */
@@ -478,6 +544,51 @@ int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU)
mesh_accept_plinks_update(sdata);
return 0;
+}
+
+int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU)
+{
+ struct ieee80211_local *local = sta->local;
+ struct ieee80211_sub_if_data *sdata = sta->sdata;
+ int err = 0;
+
+ err = sta_info_insert_check(sta);
+ if (err) {
+ rcu_read_lock();
+ goto out_free;
+ }
+
+ /*
+ * In ad-hoc mode, we sometimes need to insert stations
+ * from tasklet context from the RX path. To avoid races,
+ * always do so in that case -- see the comment below.
+ */
+ if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
+ err = sta_info_insert_ibss(sta);
+ if (err)
+ goto out_free;
+
+ return 0;
+ }
+
+ /*
+ * It might seem that the function called below is in race against
+ * the function call above that atomically inserts the station... That,
+ * however, is not true because the above code can only
+ * be invoked for IBSS interfaces, and the below code will
+ * not be -- and the two do not race against each other as
+ * the hash table also keys off the interface.
+ */
+
+ might_sleep();
+
+ mutex_lock(&local->sta_mtx);
+
+ err = sta_info_insert_non_ibss(sta);
+ if (err)
+ goto out_free;
+
+ return 0;
out_free:
BUG_ON(!err);
__sta_info_free(local, sta);
@@ -493,6 +604,25 @@ int sta_info_insert(struct sta_info *sta)
return err;
}
+/* Caller must hold sta->local->sta_mtx */
+int sta_info_reinsert(struct sta_info *sta)
+{
+ struct ieee80211_local *local = sta->local;
+ int err = 0;
+
+ err = sta_info_insert_check(sta);
+ if (err) {
+ mutex_unlock(&local->sta_mtx);
+ return err;
+ }
+
+ might_sleep();
+
+ err = sta_info_insert_non_ibss(sta);
+ rcu_read_unlock();
+ return err;
+}
+
static inline void __bss_tim_set(struct ieee80211_if_ap *bss, u16 aid)
{
/*
@@ -733,7 +863,7 @@ int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata, const u8 *addr)
int ret;
mutex_lock(&sdata->local->sta_mtx);
- sta = sta_info_get(sdata, addr);
+ sta = sta_info_get_rx(sdata, addr);
ret = __sta_info_destroy(sta);
mutex_unlock(&sdata->local->sta_mtx);
@@ -747,7 +877,7 @@ int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata,
int ret;
mutex_lock(&sdata->local->sta_mtx);
- sta = sta_info_get_bss(sdata, addr);
+ sta = sta_info_get_bss_rx(sdata, addr);
ret = __sta_info_destroy(sta);
mutex_unlock(&sdata->local->sta_mtx);
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index 28beb78..e9eb565 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -238,10 +238,12 @@ struct sta_ampdu_mlme {
* @plink_timer: peer link watch timer
* @plink_timer_was_running: used by suspend/resume to restore timers
* @debugfs: debug filesystem info
- * @sta: station information we share with the driver
* @dead: set to true when sta is unlinked
* @uploaded: set to true when sta is uploaded to the driver
* @lost_packets: number of consecutive lost packets
+ * @dummy: indicate a dummy station created for receiving
+ * EAP frames before association
+ * @sta: station information we share with the driver
*/
struct sta_info {
/* General information, mostly static */
@@ -336,6 +338,9 @@ struct sta_info {
unsigned int lost_packets;
+ /* should be right in front of sta to be in the same cache line */
+ bool dummy;
+
/* keep last! */
struct ieee80211_sta sta;
};
@@ -436,9 +441,15 @@ rcu_dereference_protected_tid_tx(struct sta_info *sta, int tid)
struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata,
const u8 *addr);
+struct sta_info *sta_info_get_rx(struct ieee80211_sub_if_data *sdata,
+ const u8 *addr);
+
struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata,
const u8 *addr);
+struct sta_info *sta_info_get_bss_rx(struct ieee80211_sub_if_data *sdata,
+ const u8 *addr);
+
static inline
void for_each_sta_info_type_check(struct ieee80211_local *local,
const u8 *addr,
@@ -459,6 +470,22 @@ void for_each_sta_info_type_check(struct ieee80211_local *local,
_sta = nxt, \
nxt = _sta ? rcu_dereference(_sta->hnext) : NULL \
) \
+ /* run code only if address matches and it's not a dummy sta */ \
+ if (memcmp(_sta->sta.addr, (_addr), ETH_ALEN) == 0 && \
+ !_sta->dummy)
+
+#define for_each_sta_info_rx(local, _addr, _sta, nxt) \
+ for ( /* initialise loop */ \
+ _sta = rcu_dereference(local->sta_hash[STA_HASH(_addr)]),\
+ nxt = _sta ? rcu_dereference(_sta->hnext) : NULL; \
+ /* typecheck */ \
+ for_each_sta_info_type_check(local, (_addr), _sta, nxt),\
+ /* continue condition */ \
+ _sta; \
+ /* advance loop */ \
+ _sta = nxt, \
+ nxt = _sta ? rcu_dereference(_sta->hnext) : NULL \
+ ) \
/* compare address and run code only if it matches */ \
if (memcmp(_sta->sta.addr, (_addr), ETH_ALEN) == 0)
@@ -484,6 +511,7 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
int sta_info_insert(struct sta_info *sta);
int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU);
int sta_info_insert_atomic(struct sta_info *sta);
+int sta_info_reinsert(struct sta_info *sta);
int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata,
const u8 *addr);
diff --git a/net/mac80211/status.c b/net/mac80211/status.c
index a89cca3..e51bd2a 100644
--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
@@ -187,6 +187,8 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
int rates_idx = -1;
bool send_to_cooked;
bool acked;
+ struct ieee80211_bar *bar;
+ u16 tid;
for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
if (info->status.rates[i].idx < 0) {
@@ -243,6 +245,22 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
tid, ssn);
}
+ if (!acked && ieee80211_is_back_req(fc)) {
+ /*
+ * BAR failed, let's tear down the BA session as a
+ * last resort as some STAs (Intel 5100 on Windows)
+ * can get stuck when the BA window isn't flushed
+ * correctly.
+ */
+ bar = (struct ieee80211_bar *) skb->data;
+ if (!(bar->control & IEEE80211_BAR_CTRL_MULTI_TID)) {
+ tid = (bar->control &
+ IEEE80211_BAR_CTRL_TID_INFO_MASK) >>
+ IEEE80211_BAR_CTRL_TID_INFO_SHIFT;
+ ieee80211_stop_tx_ba_session(&sta->sta, tid);
+ }
+ }
+
if (info->flags & IEEE80211_TX_STAT_TX_FILTERED) {
ieee80211_handle_filtered_frame(local, sta, skb);
rcu_read_unlock();
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 69fd494..0107263 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -2295,13 +2295,23 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw,
memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
mgmt->u.beacon.beacon_int =
cpu_to_le16(sdata->vif.bss_conf.beacon_int);
- mgmt->u.beacon.capab_info = 0x0; /* 0x0 for MPs */
+ mgmt->u.beacon.capab_info |= cpu_to_le16(
+ sdata->u.mesh.security ? WLAN_CAPABILITY_PRIVACY : 0);
pos = skb_put(skb, 2);
*pos++ = WLAN_EID_SSID;
*pos++ = 0x0;
- mesh_mgmt_ies_add(skb, sdata);
+ if (mesh_add_srates_ie(skb, sdata) ||
+ mesh_add_ds_params_ie(skb, sdata) ||
+ mesh_add_ext_srates_ie(skb, sdata) ||
+ mesh_add_rsn_ie(skb, sdata) ||
+ mesh_add_meshid_ie(skb, sdata) ||
+ mesh_add_meshconf_ie(skb, sdata) ||
+ mesh_add_vendor_ies(skb, sdata)) {
+ pr_err("o11s: couldn't add ies!\n");
+ goto out;
+ }
} else {
WARN_ON(1);
goto out;
diff --git a/net/nfc/core.c b/net/nfc/core.c
index b6fd4e1..284e2f6 100644
--- a/net/nfc/core.c
+++ b/net/nfc/core.c
@@ -322,7 +322,9 @@ struct nfc_dev *nfc_get_device(unsigned idx)
* @supported_protocols: NFC protocols supported by the device
*/
struct nfc_dev *nfc_allocate_device(struct nfc_ops *ops,
- u32 supported_protocols)
+ u32 supported_protocols,
+ int tx_headroom,
+ int tx_tailroom)
{
static atomic_t dev_no = ATOMIC_INIT(0);
struct nfc_dev *dev;
@@ -345,6 +347,8 @@ struct nfc_dev *nfc_allocate_device(struct nfc_ops *ops,
dev->ops = ops;
dev->supported_protocols = supported_protocols;
+ dev->tx_headroom = tx_headroom;
+ dev->tx_tailroom = tx_tailroom;
spin_lock_init(&dev->targets_lock);
nfc_genl_data_init(&dev->genl_data);
diff --git a/net/nfc/rawsock.c b/net/nfc/rawsock.c
index 52de84a..9fd652a 100644
--- a/net/nfc/rawsock.c
+++ b/net/nfc/rawsock.c
@@ -123,11 +123,7 @@ error:
static int rawsock_add_header(struct sk_buff *skb)
{
-
- if (skb_cow_head(skb, 1))
- return -ENOMEM;
-
- *skb_push(skb, 1) = 0;
+ *skb_push(skb, NFC_HEADER_SIZE) = 0;
return 0;
}
@@ -197,6 +193,7 @@ static int rawsock_sendmsg(struct kiocb *iocb, struct socket *sock,
struct msghdr *msg, size_t len)
{
struct sock *sk = sock->sk;
+ struct nfc_dev *dev = nfc_rawsock(sk)->dev;
struct sk_buff *skb;
int rc;
@@ -208,11 +205,13 @@ static int rawsock_sendmsg(struct kiocb *iocb, struct socket *sock,
if (sock->state != SS_CONNECTED)
return -ENOTCONN;
- skb = sock_alloc_send_skb(sk, len, msg->msg_flags & MSG_DONTWAIT,
- &rc);
+ skb = sock_alloc_send_skb(sk, len + dev->tx_headroom + dev->tx_tailroom + NFC_HEADER_SIZE,
+ msg->msg_flags & MSG_DONTWAIT, &rc);
if (!skb)
return rc;
+ skb_reserve(skb, dev->tx_headroom + NFC_HEADER_SIZE);
+
rc = memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len);
if (rc < 0) {
kfree_skb(skb);
diff --git a/net/wireless/mesh.c b/net/wireless/mesh.c
index 5c11608..4423e64 100644
--- a/net/wireless/mesh.c
+++ b/net/wireless/mesh.c
@@ -12,6 +12,7 @@
#define MESH_HOLD_T 100
#define MESH_PATH_TIMEOUT 5000
+#define MESH_RANN_INTERVAL 5000
/*
* Minimum interval between two consecutive PREQs originated by the same
@@ -49,6 +50,8 @@ const struct mesh_config default_mesh_config = {
.dot11MeshHWMPmaxPREQretries = MESH_MAX_PREQ_RETRIES,
.path_refresh_time = MESH_PATH_REFRESH_TIME,
.min_discovery_timeout = MESH_MIN_DISCOVERY_TIMEOUT,
+ .dot11MeshHWMPRannInterval = MESH_RANN_INTERVAL,
+ .dot11MeshGateAnnouncementProtocol = false,
};
const struct mesh_setup default_mesh_setup = {
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 2aa6a21..bddb559 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -2545,6 +2545,12 @@ static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
return err;
}
+static struct nla_policy
+nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
+ [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
+ [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
+};
+
static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
@@ -2590,6 +2596,27 @@ static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
if (parse_station_flags(info, &params))
return -EINVAL;
+ /* parse WME attributes if sta is WME capable */
+ if ((params.sta_flags_set & NL80211_STA_FLAG_WME) &&
+ info->attrs[NL80211_ATTR_STA_WME]) {
+ struct nlattr *tb[NL80211_STA_WME_MAX + 1];
+ struct nlattr *nla;
+
+ nla = info->attrs[NL80211_ATTR_STA_WME];
+ err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
+ nl80211_sta_wme_policy);
+ if (err)
+ return err;
+
+ if (tb[NL80211_STA_WME_UAPSD_QUEUES])
+ params.uapsd_queues =
+ nla_get_u8(tb[NL80211_STA_WME_UAPSD_QUEUES]);
+
+ if (tb[NL80211_STA_WME_MAX_SP])
+ params.max_sp =
+ nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
+ }
+
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
@@ -3035,6 +3062,10 @@ static int nl80211_get_mesh_config(struct sk_buff *skb,
cur_params.dot11MeshHWMPnetDiameterTraversalTime);
NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
cur_params.dot11MeshHWMPRootMode);
+ NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
+ cur_params.dot11MeshHWMPRannInterval);
+ NLA_PUT_U8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
+ cur_params.dot11MeshGateAnnouncementProtocol);
nla_nest_end(msg, pinfoattr);
genlmsg_end(msg, hdr);
return genlmsg_reply(msg, info);
@@ -3062,6 +3093,9 @@ static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_A
[NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
[NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
[NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
+ [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
+ [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
+ [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
};
static const struct nla_policy
@@ -3140,6 +3174,14 @@ do {\
dot11MeshHWMPRootMode, mask,
NL80211_MESHCONF_HWMP_ROOTMODE,
nla_get_u8);
+ FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
+ dot11MeshHWMPRannInterval, mask,
+ NL80211_MESHCONF_HWMP_RANN_INTERVAL,
+ nla_get_u16);
+ FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
+ dot11MeshGateAnnouncementProtocol, mask,
+ NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
+ nla_get_u8);
if (mask_out)
*mask_out = mask;
diff --git a/net/wireless/util.c b/net/wireless/util.c
index 844ddb0..eef82f7 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -1158,9 +1158,9 @@ u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
if (elen >= sizeof(struct ieee80211_meshconf_ie))
elems->mesh_config = (void *)pos;
break;
- case WLAN_EID_PEER_LINK:
- elems->peer_link = pos;
- elems->peer_link_len = elen;
+ case WLAN_EID_PEER_MGMT:
+ elems->peering = pos;
+ elems->peering_len = elen;
break;
case WLAN_EID_PREQ:
elems->preq = pos;
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