The removal of the master netdev broke the mesh forwarding path. This patch fixes it by using the new internal 'pending' queue.
As a result of this change, mesh forwarding no longer does the inefficient 802.11 -> 802.3 -> 802.11 conversion that was done before. [Changes since v1] Suggested by Johannes: - Select queue before adding to mpath queue - ieee80211_add_pending_skb -> ieee80211_add_pending_skbs - Remove unnecessary header wme.h Signed-off-by: Javier Cardona <[email protected]> Signed-off-by: Andrey Yurovsky <[email protected]> Reviewed-by: Johannes Berg <[email protected]> --- net/mac80211/mesh_hwmp.c | 3 ++- net/mac80211/mesh_pathtbl.c | 8 +++----- net/mac80211/rx.c | 17 +++++++++++++++-- net/mac80211/tx.c | 3 --- 4 files changed, 20 insertions(+), 11 deletions(-) diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c index f49ef28..c31fe79 100644 --- a/net/mac80211/mesh_hwmp.c +++ b/net/mac80211/mesh_hwmp.c @@ -784,7 +784,6 @@ int mesh_nexthop_lookup(struct sk_buff *skb, mesh_path_add(dst_addr, sdata); mpath = mesh_path_lookup(dst_addr, sdata); if (!mpath) { - dev_kfree_skb(skb); sdata->u.mesh.mshstats.dropped_frames_no_route++; err = -ENOSPC; goto endlookup; @@ -804,6 +803,7 @@ int mesh_nexthop_lookup(struct sk_buff *skb, memcpy(hdr->addr1, mpath->next_hop->sta.addr, ETH_ALEN); } else { + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); if (!(mpath->flags & MESH_PATH_RESOLVING)) { /* Start discovery only if it is not running yet */ mesh_queue_preq(mpath, PREQ_Q_F_START); @@ -815,6 +815,7 @@ int mesh_nexthop_lookup(struct sk_buff *skb, skb_unlink(skb_to_free, &mpath->frame_queue); } + info->flags |= IEEE80211_TX_INTFL_NEED_TXPROCESSING; skb_queue_tail(&mpath->frame_queue, skb); if (skb_to_free) mesh_path_discard_frame(skb_to_free, sdata); diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c index 3c72557..8445dda 100644 --- a/net/mac80211/mesh_pathtbl.c +++ b/net/mac80211/mesh_pathtbl.c @@ -478,11 +478,9 @@ enddel: */ void mesh_path_tx_pending(struct mesh_path *mpath) { - struct sk_buff *skb; - - while ((skb = skb_dequeue(&mpath->frame_queue)) && - (mpath->flags & MESH_PATH_ACTIVE)) - dev_queue_xmit(skb); + if (mpath->flags & MESH_PATH_ACTIVE) + ieee80211_add_pending_skbs(mpath->sdata->local, + &mpath->frame_queue); } /** diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index 91747be..1a22636 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -1485,10 +1485,12 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx) unsigned int hdrlen; struct sk_buff *skb = rx->skb, *fwd_skb; struct ieee80211_local *local = rx->local; + struct ieee80211_sub_if_data *sdata; hdr = (struct ieee80211_hdr *) skb->data; hdrlen = ieee80211_hdrlen(hdr->frame_control); mesh_hdr = (struct ieee80211s_hdr *) (skb->data + hdrlen); + sdata = IEEE80211_DEV_TO_SUB_IF(rx->dev); if (!ieee80211_is_data(hdr->frame_control)) return RX_CONTINUE; @@ -1498,10 +1500,8 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx) return RX_DROP_MONITOR; if (mesh_hdr->flags & MESH_FLAGS_AE_A5_A6){ - struct ieee80211_sub_if_data *sdata; struct mesh_path *mppath; - sdata = IEEE80211_DEV_TO_SUB_IF(rx->dev); rcu_read_lock(); mppath = mpp_path_lookup(mesh_hdr->eaddr2, sdata); if (!mppath) { @@ -1547,6 +1547,19 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx) info->flags |= IEEE80211_TX_INTFL_NEED_TXPROCESSING; fwd_skb->iif = rx->dev->ifindex; ieee80211_select_queue(local, fwd_skb); + if (is_multicast_ether_addr(fwd_hdr->addr3)) + memcpy(fwd_hdr->addr1, fwd_hdr->addr3, + ETH_ALEN); + else { + int 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) + return RX_DROP_MONITOR; + } + IEEE80211_IFSTA_MESH_CTR_INC(&sdata->u.mesh, + fwded_frames); ieee80211_add_pending_skb(local, fwd_skb); } } diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 66d9a42..969a4b2 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -1399,9 +1399,6 @@ static void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, dev_put(sdata->dev); return; } - if (memcmp(sdata->dev->dev_addr, hdr->addr4, ETH_ALEN) != 0) - IEEE80211_IFSTA_MESH_CTR_INC(&sdata->u.mesh, - fwded_frames); } else if (unlikely(sdata->vif.type == NL80211_IFTYPE_MONITOR)) { int hdrlen; u16 len_rthdr; -- 1.5.4.3 _______________________________________________ Devel mailing list [email protected] http://open80211s.com/mailman/listinfo/devel
