2009-08-11 00:35:46

by Javier Cardona

Subject: [PATCH] mac80211: Fix unresolved mesh frames queued without valid control.vif

Mesh frames that could not be immediately resolved were queued with a NULL
info->control.vif. This patch moves the call to mesh_nexthop_lookup closer to
the point where it is handed over to ieee80211_tx(). This ensures that the
unresolved frames are ready to be sent once the path is resolved.
---
net/mac80211/tx.c | 18 ++++++++++--------
1 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index b9f5be6..56dc8df 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -1413,14 +1413,7 @@ static void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,

info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;

- if (ieee80211_vif_is_mesh(&sdata->vif) &&
- ieee80211_is_data(hdr->frame_control)) {
- if (!is_multicast_ether_addr(hdr->addr1))
- if (mesh_nexthop_lookup(skb, sdata)) {
- dev_put(sdata->dev);
- return;
- }
- } else if (unlikely(sdata->vif.type == NL80211_IFTYPE_MONITOR)) {
+ if (unlikely(sdata->vif.type == NL80211_IFTYPE_MONITOR)) {
int hdrlen;
u16 len_rthdr;

@@ -1477,6 +1470,15 @@ static void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,

info->control.vif = &sdata->vif;

+ if (ieee80211_vif_is_mesh(&sdata->vif) &&
+ ieee80211_is_data(hdr->frame_control) &&
+ !is_multicast_ether_addr(hdr->addr1))
+ if (mesh_nexthop_lookup(skb, sdata)) {
+ /* skb queued: don't free */
+ dev_put(sdata->dev);
+ return;
+ }
+
ieee80211_select_queue(local, skb);
ieee80211_tx(sdata, skb, false);
dev_put(sdata->dev);
--
1.5.4.3

2009-08-11 00:40:54

by Javier Cardona

Subject: [PATCH] mac80211: Fix unresolved mesh frames queued without valid control.vif

Mesh frames that could not be immediately resolved were queued with a NULL
info->control.vif. This patch moves the call to mesh_nexthop_lookup closer to
the point where it is handed over to ieee80211_tx(). This ensures that the
unresolved frames are ready to be sent once the path is resolved.

Signed-off-by: Javier Cardona <[email protected]>
---
net/mac80211/tx.c | 18 ++++++++++--------
1 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index b9f5be6..56dc8df 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -1413,14 +1413,7 @@ static void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,

info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;

- if (ieee80211_vif_is_mesh(&sdata->vif) &&
- ieee80211_is_data(hdr->frame_control)) {
- if (!is_multicast_ether_addr(hdr->addr1))
- if (mesh_nexthop_lookup(skb, sdata)) {
- dev_put(sdata->dev);
- return;
- }
- } else if (unlikely(sdata->vif.type == NL80211_IFTYPE_MONITOR)) {
+ if (unlikely(sdata->vif.type == NL80211_IFTYPE_MONITOR)) {
int hdrlen;
u16 len_rthdr;

@@ -1477,6 +1470,15 @@ static void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,

info->control.vif = &sdata->vif;

+ if (ieee80211_vif_is_mesh(&sdata->vif) &&
+ ieee80211_is_data(hdr->frame_control) &&
+ !is_multicast_ether_addr(hdr->addr1))
+ if (mesh_nexthop_lookup(skb, sdata)) {
+ /* skb queued: don't free */
+ dev_put(sdata->dev);
+ return;
+ }
+
ieee80211_select_queue(local, skb);
ieee80211_tx(sdata, skb, false);
dev_put(sdata->dev);
--
1.5.4.3