[PATCH] {nl,cfg,mac}80211: Add support of setting non-forwarding entity in Mesh
From: Chun-Yeow Yeoh <hidden>
Date: 2012-01-20 08:14:08
Subsystem:
802.11 (including cfg80211/nl80211), mac80211, the rest · Maintainers:
Johannes Berg, Linus Torvalds
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 <redacted> --- include/linux/nl80211.h | 4 ++++ include/net/cfg80211.h | 1 + net/mac80211/cfg.c | 2 ++ net/mac80211/debugfs_netdev.c | 1 + net/mac80211/mesh_hwmp.c | 2 +- net/wireless/mesh.c | 1 + net/wireless/nl80211.c | 5 +++++ 7 files changed, 15 insertions(+), 1 deletions(-)
diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index a187606..92a1cc5 100644
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h@@ -2098,6 +2098,9 @@ enum nl80211_mntr_flags { * TUs) during which a mesh STA can send only one Action frame containing a * PERR element. * + * @NL80211_MESHCONF_FORWARDING: set Mesh STA as forwarding or non-forwarding + * or forwarding entity (default is TRUE - forwarding entity) + * * @NL80211_MESHCONF_ATTR_MAX: highest possible mesh configuration attribute * * @__NL80211_MESHCONF_ATTR_AFTER_LAST: internal use
@@ -2122,6 +2125,7 @@ enum nl80211_meshconf_params { NL80211_MESHCONF_HWMP_RANN_INTERVAL, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, + NL80211_MESHCONF_FORWARDING, /* keep last */ __NL80211_MESHCONF_ATTR_AFTER_LAST,
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 3de1c39..8f78acb 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h@@ -791,6 +791,7 @@ struct mesh_config { * mesh gate, but not necessarily using the gate announcement protocol. * Still keeping the same nomenclature to be in sync with the spec. */ bool dot11MeshGateAnnouncementProtocol; + bool dot11MeshForwarding; }; /**
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 393b2a4..6252bee 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c@@ -1299,6 +1299,8 @@ static int ieee80211_update_mesh_config(struct wiphy *wiphy, conf->dot11MeshHWMPRannInterval = nconf->dot11MeshHWMPRannInterval; } + if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask)) + conf->dot11MeshForwarding = nconf->dot11MeshForwarding; return 0; }
diff --git a/net/mac80211/debugfs_netdev.c b/net/mac80211/debugfs_netdev.c
index 8df2891..5b7c57f 100644
--- a/net/mac80211/debugfs_netdev.c
+++ b/net/mac80211/debugfs_netdev.c@@ -421,6 +421,7 @@ IEEE80211_IF_FILE(dot11MeshGateAnnouncementProtocol, u.mesh.mshcfg.dot11MeshGateAnnouncementProtocol, DEC); IEEE80211_IF_FILE(dot11MeshHWMPRannInterval, u.mesh.mshcfg.dot11MeshHWMPRannInterval, DEC); +IEEE80211_IF_FILE(dot11MeshForwarding, u.mesh.mshcfg.dot11MeshForwarding, DEC); #endif
diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c
index 73abb75..cae4071 100644
--- a/net/mac80211/mesh_hwmp.c
+++ b/net/mac80211/mesh_hwmp.c@@ -575,7 +575,7 @@ static void hwmp_preq_frame_process(struct ieee80211_sub_if_data *sdata, ifmsh->mshstats.dropped_frames_ttl++; } - if (forward) { + if (forward && ifmsh->mshcfg.dot11MeshForwarding) { u32 preq_id; u8 hopcount, flags;
diff --git a/net/wireless/mesh.c b/net/wireless/mesh.c
index 8c550df..9d3e3b6 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 ba43966..d88ec25 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c@@ -3205,6 +3205,8 @@ 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);
@@ -3236,6 +3238,7 @@ 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
@@ -3325,6 +3328,8 @@ 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;
--
1.7.0.4