From 66be7d2bcd826344894be09dc385f9f805136b84 Mon Sep 17 00:00:00 2001
From: Henning Rogge <hrogge@gmail.com>
Date: Fri, 12 Sep 2014 08:58:49 +0200
Subject: [PATCH] cfg80211: add ops to query mesh proxy path table
Add two new cfg80211 operations for querying a table with proxied mesh
paths.
Signed-off-by: Henning Rogge <henning.rogge@fkie.fraunhofer.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
include/net/cfg80211.h | 7 +++
include/uapi/linux/nl80211.h | 6 +++
net/wireless/nl80211.c | 99 ++++++++++++++++++++++++++++++++++++
net/wireless/rdev-ops.h | 27 +++++++++-
net/wireless/trace.h | 45 ++++++++++++++++
5 files changed, 183 insertions(+), 1 deletion(-)
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index a2ddcf2398fd..3f3aaa06adb5 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -2146,6 +2146,8 @@ struct cfg80211_qos_map {
* @change_mpath: change a given mesh path
* @get_mpath: get a mesh path for the given parameters
* @dump_mpath: dump mesh path callback -- resume dump at index @idx
+ * @get_mpp: get a mesh proxy path for the given parameters
+ * @dump_mpp: dump mesh proxy path callback -- resume dump at index @idx
* @join_mesh: join the mesh network with the specified parameters
* (invoked with the wireless_dev mutex held)
* @leave_mesh: leave the current mesh network
@@ -2396,6 +2398,11 @@ struct cfg80211_ops {
int (*dump_mpath)(struct wiphy *wiphy, struct net_device *dev,
int idx, u8 *dst, u8 *next_hop,
struct mpath_info *pinfo);
+ int (*get_mpp)(struct wiphy *wiphy, struct net_device *dev,
+ u8 *dst, u8 *mpp, struct mpath_info *pinfo);
+ int (*dump_mpp)(struct wiphy *wiphy, struct net_device *dev,
+ int idx, u8 *dst, u8 *mpp,
+ struct mpath_info *pinfo);
int (*get_mesh_config)(struct wiphy *wiphy,
struct net_device *dev,
struct mesh_config *conf);
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 4b28dc07bcb1..846071b0cde9 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -738,6 +738,10 @@
* before removing a station entry entirely, or before disassociating
* or similar, cleanup will happen in the driver/device in this case.
*
+ * @NL80211_CMD_GET_MPP: Get mesh path attributes for mesh proxy path to
+ * destination %NL80211_ATTR_MAC on the interface identified by
+ * %NL80211_ATTR_IFINDEX.
+ *
* @NL80211_CMD_MAX: highest used command number
* @__NL80211_CMD_AFTER_LAST: internal use
*/
@@ -912,6 +916,8 @@ enum nl80211_commands {
NL80211_CMD_ADD_TX_TS,
NL80211_CMD_DEL_TX_TS,
+ NL80211_CMD_GET_MPP,
+
/* add new commands above here */
/* used to define NL80211_CMD_MAX below */
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index cb9f5a44ffad..d527aa0706c1 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -4624,6 +4624,96 @@ static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
return rdev_del_mpath(rdev, dev, dst);
}
+static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
+{
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ int err;
+ struct net_device *dev = info->user_ptr[1];
+ struct mpath_info pinfo;
+ struct sk_buff *msg;
+ u8 *dst = NULL;
+ u8 mpp[ETH_ALEN];
+
+ memset(&pinfo, 0, sizeof(pinfo));
+
+ if (!info->attrs[NL80211_ATTR_MAC])
+ return -EINVAL;
+
+ dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
+
+ if (!rdev->ops->get_mpp)
+ return -EOPNOTSUPP;
+
+ if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
+ return -EOPNOTSUPP;
+
+ err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
+ if (err)
+ return err;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
+ dev, dst, mpp, &pinfo) < 0) {
+ nlmsg_free(msg);
+ return -ENOBUFS;
+ }
+
+ return genlmsg_reply(msg, info);
+}
+
+static int nl80211_dump_mpp(struct sk_buff *skb,
+ struct netlink_callback *cb)
+{
+ struct mpath_info pinfo;
+ struct cfg80211_registered_device *rdev;
+ struct wireless_dev *wdev;
+ u8 dst[ETH_ALEN];
+ u8 mpp[ETH_ALEN];
+ int path_idx = cb->args[2];
+ int err;
+
+ err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
+ if (err)
+ return err;
+
+ if (!rdev->ops->dump_mpp) {
+ err = -EOPNOTSUPP;
+ goto out_err;
+ }
+
+ if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
+ err = -EOPNOTSUPP;
+ goto out_err;
+ }
+
+ while (1) {
+ err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
+ mpp, &pinfo);
+ if (err == -ENOENT)
+ break;
+ if (err)
+ goto out_err;
+
+ if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq, NLM_F_MULTI,
+ wdev->netdev, dst, mpp,
+ &pinfo) < 0)
+ goto out;
+
+ path_idx++;
+ }
+
+ out:
+ cb->args[2] = path_idx;
+ err = skb->len;
+ out_err:
+ nl80211_finish_wdev_dump(rdev);
+ return err;
+}
+
static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
@@ -9773,6 +9863,15 @@ static const struct genl_ops nl80211_ops[] = {
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
+ {
+ .cmd = NL80211_CMD_GET_MPP,
+ .doit = nl80211_get_mpp,
+ .dumpit = nl80211_dump_mpp,
+ .policy = nl80211_policy,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
+ NL80211_FLAG_NEED_RTNL,
+ },
{
.cmd = NL80211_CMD_SET_MPATH,
.doit = nl80211_set_mpath,
diff --git a/net/wireless/rdev-ops.h b/net/wireless/rdev-ops.h
index f6d457d6a558..c09e697bcb15 100644
--- a/net/wireless/rdev-ops.h
+++ b/net/wireless/rdev-ops.h
@@ -263,6 +263,18 @@ static inline int rdev_get_mpath(struct cfg80211_registered_device *rdev,
}
+static inline int rdev_get_mpp(struct cfg80211_registered_device *rdev,
+ struct net_device *dev, u8 *dst, u8 *mpp,
+ struct mpath_info *pinfo)
+{
+ int ret;
+
+ trace_rdev_get_mpp(&rdev->wiphy, dev, dst, mpp);
+ ret = rdev->ops->get_mpp(&rdev->wiphy, dev, dst, mpp, pinfo);
+ trace_rdev_return_int_mpath_info(&rdev->wiphy, ret, pinfo);
+ return ret;
+}
+
static inline int rdev_dump_mpath(struct cfg80211_registered_device *rdev,
struct net_device *dev, int idx, u8 *dst,
u8 *next_hop, struct mpath_info *pinfo)
@@ -271,7 +283,20 @@ static inline int rdev_dump_mpath(struct cfg80211_registered_device *rdev,
int ret;
trace_rdev_dump_mpath(&rdev->wiphy, dev, idx, dst, next_hop);
ret = rdev->ops->dump_mpath(&rdev->wiphy, dev, idx, dst, next_hop,
- pinfo);
+ pinfo);
+ trace_rdev_return_int_mpath_info(&rdev->wiphy, ret, pinfo);
+ return ret;
+}
+
+static inline int rdev_dump_mpp(struct cfg80211_registered_device *rdev,
+ struct net_device *dev, int idx, u8 *dst,
+ u8 *mpp, struct mpath_info *pinfo)
+
+{
+ int ret;
+
+ trace_rdev_dump_mpp(&rdev->wiphy, dev, idx, dst, mpp);
+ ret = rdev->ops->dump_mpp(&rdev->wiphy, dev, idx, dst, mpp, pinfo);
trace_rdev_return_int_mpath_info(&rdev->wiphy, ret, pinfo);
return ret;
}
diff --git a/net/wireless/trace.h b/net/wireless/trace.h
index 625a6e6d1168..8e4f8f04332d 100644
--- a/net/wireless/trace.h
+++ b/net/wireless/trace.h
@@ -801,6 +801,51 @@ TRACE_EVENT(rdev_dump_mpath,
MAC_PR_ARG(next_hop))
);
+TRACE_EVENT(rdev_get_mpp,
+ TP_PROTO(struct wiphy *wiphy, struct net_device *netdev,
+ u8 *dst, u8 *mpp),
+ TP_ARGS(wiphy, netdev, dst, mpp),
+ TP_STRUCT__entry(
+ WIPHY_ENTRY
+ NETDEV_ENTRY
+ MAC_ENTRY(dst)
+ MAC_ENTRY(mpp)
+ ),
+ TP_fast_assign(
+ WIPHY_ASSIGN;
+ NETDEV_ASSIGN;
+ MAC_ASSIGN(dst, dst);
+ MAC_ASSIGN(mpp, mpp);
+ ),
+ TP_printk(WIPHY_PR_FMT ", " NETDEV_PR_FMT ", destination: " MAC_PR_FMT
+ ", mpp: " MAC_PR_FMT, WIPHY_PR_ARG, NETDEV_PR_ARG,
+ MAC_PR_ARG(dst), MAC_PR_ARG(mpp))
+);
+
+TRACE_EVENT(rdev_dump_mpp,
+ TP_PROTO(struct wiphy *wiphy, struct net_device *netdev, int idx,
+ u8 *dst, u8 *mpp),
+ TP_ARGS(wiphy, netdev, idx, mpp, dst),
+ TP_STRUCT__entry(
+ WIPHY_ENTRY
+ NETDEV_ENTRY
+ MAC_ENTRY(dst)
+ MAC_ENTRY(mpp)
+ __field(int, idx)
+ ),
+ TP_fast_assign(
+ WIPHY_ASSIGN;
+ NETDEV_ASSIGN;
+ MAC_ASSIGN(dst, dst);
+ MAC_ASSIGN(mpp, mpp);
+ __entry->idx = idx;
+ ),
+ TP_printk(WIPHY_PR_FMT ", " NETDEV_PR_FMT ", index: %d, destination: "
+ MAC_PR_FMT ", mpp: " MAC_PR_FMT,
+ WIPHY_PR_ARG, NETDEV_PR_ARG, __entry->idx, MAC_PR_ARG(dst),
+ MAC_PR_ARG(mpp))
+);
+
TRACE_EVENT(rdev_return_int_mpath_info,
TP_PROTO(struct wiphy *wiphy, int ret, struct mpath_info *pinfo),
TP_ARGS(wiphy, ret, pinfo),
--
2.30.9