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{nl,cfg}80211: Support for mesh synchronization

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Report Toffset to userspace.
Let userspace select the mesh synchronization method.

Signed-off-by: Marco Porsch <marco.porsch@s2005.tu-chemnitz.de>
Signed-off-by: Pavel Zubarev <pavel.zubarev@gmail.com>
Signed-off-by: Javier Cardona <javier@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Javier Cardona 2012-03-31 11:31:33 -07:00 committed by John W. Linville
parent dbf498fbaf
commit d299a1f21e
5 changed files with 50 additions and 3 deletions
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12
include/linux/nl80211.h
View File

@ -1685,6 +1685,7 @@ enum nl80211_sta_bss_param {
* @NL80211_STA_INFO_CONNECTED_TIME: time since the station is last connected
* @NL80211_STA_INFO_STA_FLAGS: Contains a struct nl80211_sta_flag_update.
* @NL80211_STA_INFO_BEACON_LOSS: count of times beacon loss was detected (u32)
* @NL80211_STA_INFO_T_OFFSET: timing offset with respect to this STA (s64)
* @__NL80211_STA_INFO_AFTER_LAST: internal
* @NL80211_STA_INFO_MAX: highest possible station info attribute
*/
@ -1708,6 +1709,7 @@ enum nl80211_sta_info {
NL80211_STA_INFO_CONNECTED_TIME,
NL80211_STA_INFO_STA_FLAGS,
NL80211_STA_INFO_BEACON_LOSS,
NL80211_STA_INFO_T_OFFSET,
/* keep last */
__NL80211_STA_INFO_AFTER_LAST,
@ -2142,6 +2144,9 @@ enum nl80211_mntr_flags {
*
* @NL80211_MESHCONF_ATTR_MAX: highest possible mesh configuration attribute
*
* @NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR: maximum number of neighbors
* to synchronize to for 11s default synchronization method (see 11C.12.2.2)
*
* @__NL80211_MESHCONF_ATTR_AFTER_LAST: internal use
*/
enum nl80211_meshconf_params {
@ -2166,6 +2171,7 @@ enum nl80211_meshconf_params {
NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
NL80211_MESHCONF_FORWARDING,
NL80211_MESHCONF_RSSI_THRESHOLD,
NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
/* keep last */
__NL80211_MESHCONF_ATTR_AFTER_LAST,
@ -2205,6 +2211,11 @@ enum nl80211_meshconf_params {
* complete (unsecured) mesh peering without the need of a userspace daemon.
*
* @NL80211_MESH_SETUP_ATTR_MAX: highest possible mesh setup attribute number
*
* @NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC: Enable this option to use a
* vendor specific synchronization method or disable it to use the default
* neighbor offset synchronization
*
* @__NL80211_MESH_SETUP_ATTR_AFTER_LAST: Internal use
*/
enum nl80211_mesh_setup_params {
@ -2214,6 +2225,7 @@ enum nl80211_mesh_setup_params {
NL80211_MESH_SETUP_IE,
NL80211_MESH_SETUP_USERSPACE_AUTH,
NL80211_MESH_SETUP_USERSPACE_AMPE,
NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC,
/* keep last */
__NL80211_MESH_SETUP_ATTR_AFTER_LAST,

14
include/net/cfg80211.h
View File

@ -521,6 +521,7 @@ struct station_parameters {
* @STATION_INFO_ASSOC_REQ_IES: @assoc_req_ies filled
* @STATION_INFO_STA_FLAGS: @sta_flags filled
* @STATION_INFO_BEACON_LOSS_COUNT: @beacon_loss_count filled
* @STATION_INFO_T_OFFSET: @t_offset filled
*/
enum station_info_flags {
STATION_INFO_INACTIVE_TIME = 1<<0,
@ -542,7 +543,8 @@ enum station_info_flags {
STATION_INFO_CONNECTED_TIME = 1<<16,
STATION_INFO_ASSOC_REQ_IES = 1<<17,
STATION_INFO_STA_FLAGS = 1<<18,
STATION_INFO_BEACON_LOSS_COUNT = 1<<19
STATION_INFO_BEACON_LOSS_COUNT = 1<<19,
STATION_INFO_T_OFFSET = 1<<20,
};
/**
@ -643,6 +645,7 @@ struct sta_bss_parameters {
* @assoc_req_ies_len: Length of assoc_req_ies buffer in octets.
* @sta_flags: station flags mask & values
* @beacon_loss_count: Number of times beacon loss event has triggered.
* @t_offset: Time offset of the station relative to this host.
*/
struct station_info {
u32 filled;
@ -671,6 +674,7 @@ struct station_info {
size_t assoc_req_ies_len;
u32 beacon_loss_count;
s64 t_offset;
/*
* Note: Add a new enum station_info_flags value for each new field and
@ -798,6 +802,8 @@ struct mesh_config {
/* ttl used in path selection information elements */
u8 element_ttl;
bool auto_open_plinks;
/* neighbor offset synchronization */
u32 dot11MeshNbrOffsetMaxNeighbor;
/* HWMP parameters */
u8 dot11MeshHWMPmaxPREQretries;
u32 path_refresh_time;
@ -821,6 +827,7 @@ struct mesh_config {
* struct mesh_setup - 802.11s mesh setup configuration
* @mesh_id: the mesh ID
* @mesh_id_len: length of the mesh ID, at least 1 and at most 32 bytes
* @sync_method: which synchronization method to use
* @path_sel_proto: which path selection protocol to use
* @path_metric: which metric to use
* @ie: vendor information elements (optional)
@ -834,8 +841,9 @@ struct mesh_config {
struct mesh_setup {
const u8 *mesh_id;
u8 mesh_id_len;
u8 path_sel_proto;
u8 path_metric;
u8 sync_method;
u8 path_sel_proto;
u8 path_metric;
const u8 *ie;
u8 ie_len;
bool is_authenticated;

8
net/mac80211/cfg.c
View File

@ -412,6 +412,10 @@ static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
sinfo->llid = le16_to_cpu(sta->llid);
sinfo->plid = le16_to_cpu(sta->plid);
sinfo->plink_state = sta->plink_state;
if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) {
sinfo->filled |= STATION_INFO_T_OFFSET;
sinfo->t_offset = sta->t_offset;
}
#endif
}
@ -1235,6 +1239,7 @@ static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
/* now copy the rest of the setup parameters */
ifmsh->mesh_id_len = setup->mesh_id_len;
memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
ifmsh->mesh_sp_id = setup->sync_method;
ifmsh->mesh_pp_id = setup->path_sel_proto;
ifmsh->mesh_pm_id = setup->path_metric;
ifmsh->security = IEEE80211_MESH_SEC_NONE;
@ -1279,6 +1284,9 @@ static int ieee80211_update_mesh_config(struct wiphy *wiphy,
conf->dot11MeshTTL = nconf->element_ttl;
if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
conf->auto_open_plinks = nconf->auto_open_plinks;
if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
conf->dot11MeshNbrOffsetMaxNeighbor =
nconf->dot11MeshNbrOffsetMaxNeighbor;
if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
conf->dot11MeshHWMPmaxPREQretries =
nconf->dot11MeshHWMPmaxPREQretries;

3
net/wireless/mesh.c
View File

@ -38,6 +38,7 @@
#define MESH_MAX_PREQ_RETRIES 4
#define MESH_SYNC_NEIGHBOR_OFFSET_MAX 50
const struct mesh_config default_mesh_config = {
.dot11MeshRetryTimeout = MESH_RET_T,
@ -48,6 +49,7 @@ const struct mesh_config default_mesh_config = {
.element_ttl = MESH_DEFAULT_ELEMENT_TTL,
.auto_open_plinks = true,
.dot11MeshMaxPeerLinks = MESH_MAX_ESTAB_PLINKS,
.dot11MeshNbrOffsetMaxNeighbor = MESH_SYNC_NEIGHBOR_OFFSET_MAX,
.dot11MeshHWMPactivePathTimeout = MESH_PATH_TIMEOUT,
.dot11MeshHWMPpreqMinInterval = MESH_PREQ_MIN_INT,
.dot11MeshHWMPperrMinInterval = MESH_PERR_MIN_INT,
@ -62,6 +64,7 @@ const struct mesh_config default_mesh_config = {
};
const struct mesh_setup default_mesh_setup = {
.sync_method = IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET,
.path_sel_proto = IEEE80211_PATH_PROTOCOL_HWMP,
.path_metric = IEEE80211_PATH_METRIC_AIRTIME,
.ie = NULL,

16
net/wireless/nl80211.c
View File

@ -2490,6 +2490,9 @@ static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
NLA_PUT(msg, NL80211_STA_INFO_STA_FLAGS,
sizeof(struct nl80211_sta_flag_update),
&sinfo->sta_flags);
if (sinfo->filled & STATION_INFO_T_OFFSET)
NLA_PUT_U64(msg, NL80211_STA_INFO_T_OFFSET,
sinfo->t_offset);
nla_nest_end(msg, sinfoattr);
if (sinfo->filled & STATION_INFO_ASSOC_REQ_IES)
@ -3288,6 +3291,8 @@ static int nl80211_get_mesh_config(struct sk_buff *skb,
cur_params.element_ttl);
NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
cur_params.auto_open_plinks);
NLA_PUT_U32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
cur_params.dot11MeshNbrOffsetMaxNeighbor);
NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
cur_params.dot11MeshHWMPmaxPREQretries);
NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
@ -3332,6 +3337,7 @@ static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_A
[NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
[NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
[NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
[NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
[NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
[NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
@ -3349,6 +3355,7 @@ static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_A
static const struct nla_policy
nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
[NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
@ -3401,6 +3408,9 @@ do {\
mask, NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
mask, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
nla_get_u32);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
nla_get_u8);
@ -3458,6 +3468,12 @@ static int nl80211_parse_mesh_setup(struct genl_info *info,
nl80211_mesh_setup_params_policy))
return -EINVAL;
if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
setup->sync_method =
(nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
IEEE80211_SYNC_METHOD_VENDOR :
IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
setup->path_sel_proto =
(nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?