diff options
| author | Thomas Pedersen <thomas@cozybit.com> | 2011-11-24 17:15:21 -0800 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-11-28 14:44:03 -0500 |
| commit | 7e3c88660b5b90f437cf466b1805089ccb764ee3 (patch) | |
| tree | 7b624ef198521b908750da24b0577175e2c71235 /net | |
| parent | 4bb62344e4703414fd253ceb07c163ac37da80d4 (diff) | |
| download | lwn-7e3c88660b5b90f437cf466b1805089ccb764ee3.tar.gz lwn-7e3c88660b5b90f437cf466b1805089ccb764ee3.zip | |
mac80211: failed forwarded mesh frame addressing
Don't write the TA until next hop is actually known, since we might need
the original TA for sending a PERR. Previously we would send a PERR to
ourself if path resolution for a forwarded frame failed.
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: Javier Cardona <javier@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/mac80211/mesh_hwmp.c | 5 | ||||
| -rw-r--r-- | net/mac80211/mesh_pathtbl.c | 6 | ||||
| -rw-r--r-- | net/mac80211/rx.c | 8 |
3 files changed, 8 insertions, 11 deletions
diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c index ce3db2735d7c..1b13135d7f35 100644 --- a/net/mac80211/mesh_hwmp.c +++ b/net/mac80211/mesh_hwmp.c @@ -1029,9 +1029,10 @@ int mesh_nexthop_lookup(struct sk_buff *skb, PREQ_Q_F_START | PREQ_Q_F_REFRESH); } next_hop = rcu_dereference(mpath->next_hop); - if (next_hop) + if (next_hop) { memcpy(hdr->addr1, next_hop->sta.addr, ETH_ALEN); - else + memcpy(hdr->addr2, sdata->vif.addr, ETH_ALEN); + } else err = -ENOENT; } else { struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c index 7bd2a76aef0e..4c50d8ade04f 100644 --- a/net/mac80211/mesh_pathtbl.c +++ b/net/mac80211/mesh_pathtbl.c @@ -221,6 +221,7 @@ void mesh_path_assign_nexthop(struct mesh_path *mpath, struct sta_info *sta) while ((skb = __skb_dequeue(&mpath->frame_queue)) != NULL) { hdr = (struct ieee80211_hdr *) skb->data; memcpy(hdr->addr1, sta->sta.addr, ETH_ALEN); + memcpy(hdr->addr2, mpath->sdata->vif.addr, ETH_ALEN); __skb_queue_tail(&tmpq, skb); } @@ -264,6 +265,7 @@ static void prepare_for_gate(struct sk_buff *skb, char *dst_addr, next_hop = rcu_dereference(gate_mpath->next_hop)->sta.addr; memcpy(hdr->addr1, next_hop, ETH_ALEN); rcu_read_unlock(); + memcpy(hdr->addr2, gate_mpath->sdata->vif.addr, ETH_ALEN); memcpy(hdr->addr3, dst_addr, ETH_ALEN); } @@ -990,7 +992,7 @@ void mesh_path_discard_frame(struct sk_buff *skb, u8 *ra, *da; da = hdr->addr3; - ra = hdr->addr1; + ra = hdr->addr2; rcu_read_lock(); mpath = mesh_path_lookup(da, sdata); if (mpath) { @@ -999,7 +1001,7 @@ void mesh_path_discard_frame(struct sk_buff *skb, spin_unlock_bh(&mpath->state_lock); } rcu_read_unlock(); - mesh_path_error_tx(sdata->u.mesh.mshcfg.element_ttl, skb->data, + mesh_path_error_tx(sdata->u.mesh.mshcfg.element_ttl, da, cpu_to_le32(sn), reason, ra, sdata); } diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index 4eafbfd891d5..60798d6d53cf 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -1974,7 +1974,6 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx) goto out; fwd_hdr = (struct ieee80211_hdr *) fwd_skb->data; - memcpy(fwd_hdr->addr2, sdata->vif.addr, ETH_ALEN); info = IEEE80211_SKB_CB(fwd_skb); memset(info, 0, sizeof(*info)); info->flags |= IEEE80211_TX_INTFL_NEED_TXPROCESSING; @@ -1983,14 +1982,9 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx) if (is_multicast_ether_addr(fwd_hdr->addr1)) { IEEE80211_IFSTA_MESH_CTR_INC(&sdata->u.mesh, fwded_mcast); + memcpy(fwd_hdr->addr2, sdata->vif.addr, ETH_ALEN); } else { int err; - /* - * Save TA to addr1 to send TA a path error if a - * suitable next hop is not found - */ - memcpy(fwd_hdr->addr1, fwd_hdr->addr2, - ETH_ALEN); err = mesh_nexthop_lookup(fwd_skb, sdata); /* Failed to immediately resolve next hop: * fwded frame was dropped or will be added |