From: Julan Hsu <julanhsu@xxxxxxxxxx>
Expose hop count to destination information in mpath info
Signed-off-by: Julan Hsu <julanhsu@xxxxxxxxxx>
---
include/net/cfg80211.h | 4 ++++
include/uapi/linux/nl80211.h | 2 ++
net/mac80211/cfg.c | 4 +++-
net/mac80211/mesh_hwmp.c | 5 +++++
net/wireless/nl80211.c | 5 ++++-
5 files changed, 18 insertions(+), 2 deletions(-)
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 1fa41b7a1be3..6be50a550a13 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1417,6 +1417,7 @@ enum monitor_flags {
* @MPATH_INFO_DISCOVERY_TIMEOUT: @discovery_timeout filled
* @MPATH_INFO_DISCOVERY_RETRIES: @discovery_retries filled
* @MPATH_INFO_FLAGS: @flags filled
+ * @MPATH_INFO_HOP_COUNT: @hop_count filled
*/
enum mpath_info_flags {
MPATH_INFO_FRAME_QLEN = BIT(0),
@@ -1426,6 +1427,7 @@ enum mpath_info_flags {
MPATH_INFO_DISCOVERY_TIMEOUT = BIT(4),
MPATH_INFO_DISCOVERY_RETRIES = BIT(5),
MPATH_INFO_FLAGS = BIT(6),
+ MPATH_INFO_HOP_COUNT = BIT(7)
};
/**
@@ -1445,6 +1447,7 @@ enum mpath_info_flags {
* This number should increase every time the list of mesh paths
* changes, i.e. when a station is added or removed, so that
* userspace can tell whether it got a consistent snapshot.
+ * @hop_count: hops to destination
*/
struct mpath_info {
u32 filled;
@@ -1455,6 +1458,7 @@ struct mpath_info {
u32 discovery_timeout;
u8 discovery_retries;
u8 flags;
+ u8 hop_count;
int generation;
};
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 6d610bae30a9..fcfca197be59 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -3225,6 +3225,7 @@ enum nl80211_mpath_flags {
* &enum nl80211_mpath_flags;
* @NL80211_MPATH_INFO_DISCOVERY_TIMEOUT: total path discovery timeout, in msec
* @NL80211_MPATH_INFO_DISCOVERY_RETRIES: mesh path discovery retries
+ * @NL80211_MPATH_INFO_HOP_COUNT: hop count to destination
* @NL80211_MPATH_INFO_MAX: highest mesh path information attribute number
* currently defind
* @__NL80211_MPATH_INFO_AFTER_LAST: internal use
@@ -3238,6 +3239,7 @@ enum nl80211_mpath_info {
NL80211_MPATH_INFO_FLAGS,
NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
NL80211_MPATH_INFO_DISCOVERY_RETRIES,
+ NL80211_MPATH_INFO_HOP_COUNT,
/* keep last */
__NL80211_MPATH_INFO_AFTER_LAST,
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 818aa0060349..8e756ac076ad 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1742,7 +1742,8 @@ static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
MPATH_INFO_EXPTIME |
MPATH_INFO_DISCOVERY_TIMEOUT |
MPATH_INFO_DISCOVERY_RETRIES |
- MPATH_INFO_FLAGS;
+ MPATH_INFO_FLAGS |
+ MPATH_INFO_HOP_COUNT;
pinfo->frame_qlen = mpath->frame_queue.qlen;
pinfo->sn = mpath->sn;
@@ -1762,6 +1763,7 @@ static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
if (mpath->flags & MESH_PATH_RESOLVED)
pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
+ pinfo->hop_count = mpath->hop_count;
}
static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c
index 6950cd0bf594..6d1190b3332f 100644
--- a/net/mac80211/mesh_hwmp.c
+++ b/net/mac80211/mesh_hwmp.c
@@ -386,6 +386,7 @@ static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata,
unsigned long orig_lifetime, exp_time;
u32 last_hop_metric, new_metric;
bool process = true;
+ u8 hopcount;
rcu_read_lock();
sta = sta_info_get(sdata, mgmt->sa);
@@ -404,6 +405,7 @@ static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata,
orig_sn = PREQ_IE_ORIG_SN(hwmp_ie);
orig_lifetime = PREQ_IE_LIFETIME(hwmp_ie);
orig_metric = PREQ_IE_METRIC(hwmp_ie);
+ hopcount = PREQ_IE_HOPCOUNT(hwmp_ie) + 1;
break;
case MPATH_PREP:
/* Originator here refers to the MP that was the target in the
@@ -415,6 +417,7 @@ static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata,
orig_sn = PREP_IE_TARGET_SN(hwmp_ie);
orig_lifetime = PREP_IE_LIFETIME(hwmp_ie);
orig_metric = PREP_IE_METRIC(hwmp_ie);
+ hopcount = PREP_IE_HOPCOUNT(hwmp_ie) + 1;
break;
default:
rcu_read_unlock();
@@ -482,6 +485,7 @@ static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata,
mpath->sn = orig_sn;
mpath->exp_time = time_after(mpath->exp_time, exp_time)
? mpath->exp_time : exp_time;
+ mpath->hop_count = hopcount;
mesh_path_activate(mpath);
spin_unlock_bh(&mpath->state_lock);
ewma_mesh_fail_avg_init(&sta->mesh->fail_avg);
@@ -523,6 +527,7 @@ static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata,
mpath->metric = last_hop_metric;
mpath->exp_time = time_after(mpath->exp_time, exp_time)
? mpath->exp_time : exp_time;
+ mpath->hop_count = 1;
mesh_path_activate(mpath);
spin_unlock_bh(&mpath->state_lock);
ewma_mesh_fail_avg_init(&sta->mesh->fail_avg);
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 2317727d6413..442c02415aed 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -5641,7 +5641,10 @@ static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
pinfo->discovery_timeout)) ||
((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
- pinfo->discovery_retries)))
+ pinfo->discovery_retries)) ||
+ ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
+ nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
+ pinfo->hop_count)))
goto nla_put_failure;
nla_nest_end(msg, pinfoattr);
--
2.20.1.97.g81188d93c3-goog
