diff options
| author |   Thomas Pedersen <thomas@cozybit.com> | 2011-11-24 17:15:25 -0800 |
|---|---|---|
| committer |   John W. Linville <linville@tuxdriver.com> | 2011-11-28 14:44:07 -0500 |
| commit | 0cfda8519c85eb279166fb55a8553ee66eac9b35 (patch) | |
| tree | 55f917c9402c0164a76c80b4675ea173562a869f /net/mac80211/rx.c | |
| parent | {nl,cfg,mac}80211: implement dot11MeshHWMPperrMinInterval (diff) | |
| download | linux-dev-0cfda8519c85eb279166fb55a8553ee66eac9b35.tar.xz linux-dev-0cfda8519c85eb279166fb55a8553ee66eac9b35.zip | |
mac80211: don't initiate path discovery when forwarding frame with unknown DA
We used to initiate a path discovery when receiving a frame for which
there is no forwarding information. To cut down on PREQ spam, just send
a (gated) PERR in response.
Also separate path discovery logic from nexthop querying. This patch
means we no longer queue frames when forwarding, so kill the PERR TX
stuff in discard_frame().
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/rx.c')
| -rw-r--r-- | net/mac80211/rx.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index 92fa95741761..f842f901d179 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -1899,6 +1899,7 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx) struct ieee80211_local *local = rx->local; struct ieee80211_sub_if_data *sdata = rx->sdata; struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb); + __le16 reason = cpu_to_le16(WLAN_REASON_MESH_PATH_NOFORWARD); u16 q; hdr = (struct ieee80211_hdr *) skb->data; @@ -1985,13 +1986,14 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx) fwded_mcast); memcpy(fwd_hdr->addr2, sdata->vif.addr, ETH_ALEN); } else { - int err; - err = mesh_nexthop_lookup(fwd_skb, sdata); - /* Failed to immediately resolve next hop: - * fwded frame was dropped or will be added - * later to the pending skb queue. */ - if (err) + if (mesh_nexthop_lookup(fwd_skb, sdata)) { + /* can't resolve next hop, send a PERR */ + mesh_path_error_tx(sdata->u.mesh.mshcfg.element_ttl, + fwd_hdr->addr3, 0, reason, + fwd_hdr->addr2, sdata); + sdata->u.mesh.mshstats.dropped_frames_no_route++; return RX_DROP_MONITOR; + } IEEE80211_IFSTA_MESH_CTR_INC(&sdata->u.mesh, fwded_unicast); |