{nl,cfg,mac}80211: Add support of setting non-forwarding entity in Mesh

A mesh node that joins the mesh network is by default a forwarding entity. This patch allows
the mesh node to set as non-forwarding entity. Whenever dot11MeshForwarding is set to 0, the
mesh node can prevent itself from forwarding the traffic which is not destined to him.

Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

2 files changed, 6 insertions, 0 deletions

diff --git a/net/wireless/mesh.c b/net/wireless/mesh.c
index 8c550df13037..9d3e3b6bfcf4 100644
--- a/net/wireless/mesh.c
+++ b/net/wireless/mesh.c
@@ -55,6 +55,7 @@ const struct mesh_config default_mesh_config = {
         .min_discovery_timeout = MESH_MIN_DISCOVERY_TIMEOUT,
         .dot11MeshHWMPRannInterval = MESH_RANN_INTERVAL,
         .dot11MeshGateAnnouncementProtocol = false,
+        .dot11MeshForwarding = true,
 };
 
 const struct mesh_setup default_mesh_setup = {
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 5cefd74ab47d..c42173f947ef 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -3258,6 +3258,8 @@ static int nl80211_get_mesh_config(struct sk_buff *skb,
                         cur_params.dot11MeshHWMPRannInterval);
         NLA_PUT_U8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
                         cur_params.dot11MeshGateAnnouncementProtocol);
+        NLA_PUT_U8(msg, NL80211_MESHCONF_FORWARDING,
+                        cur_params.dot11MeshForwarding);
         nla_nest_end(msg, pinfoattr);
         genlmsg_end(msg, hdr);
         return genlmsg_reply(msg, info);
@@ -3289,6 +3291,7 @@ static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_A
         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
+        [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
 };
 
 static const struct nla_policy
@@ -3378,6 +3381,8 @@ do {\
                         dot11MeshGateAnnouncementProtocol, mask,
                         NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
                         nla_get_u8);
+        FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding,
+                        mask, NL80211_MESHCONF_FORWARDING, nla_get_u8);
         if (mask_out)
                 *mask_out = mask;