2015-06-05 19:44:45

by Alexis Green

Subject: [PATCH] mac80211: Fix incorrectly named last_hop_metric variable in mesh_rx_path_sel_frame

The last hop metric should refer to link cost (this is how
hwmp_route_info_get uses it for example). But in mesh_rx_path_sel_frame
we are not dealing with link cost but with the total cost to the origin
of a PREQ or PREP.

Signed-off-by: Alexis Green <[email protected]>
CC: Jesse Jones <[email protected]>

---

diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c
index 214e63b..be33e41 100644
--- a/net/mac80211/mesh_hwmp.c
+++ b/net/mac80211/mesh_hwmp.c
@@ -854,7 +854,7 @@ void mesh_rx_path_sel_frame(struct ieee80211_sub_if_data *sdata,
{
struct ieee802_11_elems elems;
size_t baselen;
- u32 last_hop_metric;
+ u32 path_metric;
struct sta_info *sta;

/* need action_code */
@@ -877,21 +877,21 @@ void mesh_rx_path_sel_frame(struct ieee80211_sub_if_data *sdata,
if (elems.preq_len != 37)
/* Right now we support just 1 destination and no AE */
return;
- last_hop_metric = hwmp_route_info_get(sdata, mgmt, elems.preq,
- MPATH_PREQ);
- if (last_hop_metric)
+ path_metric = hwmp_route_info_get(sdata, mgmt, elems.preq,
+ MPATH_PREQ);
+ if (path_metric)
hwmp_preq_frame_process(sdata, mgmt, elems.preq,
- last_hop_metric);
+ path_metric);
}
if (elems.prep) {
if (elems.prep_len != 31)
/* Right now we support no AE */
return;
- last_hop_metric = hwmp_route_info_get(sdata, mgmt, elems.prep,
- MPATH_PREP);
- if (last_hop_metric)
+ path_metric = hwmp_route_info_get(sdata, mgmt, elems.prep,
+ MPATH_PREP);
+ if (path_metric)
hwmp_prep_frame_process(sdata, mgmt, elems.prep,
- last_hop_metric);
+ path_metric);
}
if (elems.perr) {
if (elems.perr_len != 15)

2015-06-09 19:54:01

by Johannes Berg

Subject: Re: [PATCH] mac80211: Fix incorrectly named last_hop_metric variable in mesh_rx_path_sel_frame

On Fri, 2015-06-05 at 12:43 -0700, Alexis Green wrote:
> The last hop metric should refer to link cost (this is how
> hwmp_route_info_get uses it for example). But in mesh_rx_path_sel_frame
> we are not dealing with link cost but with the total cost to the origin
> of a PREQ or PREP.
>
> Signed-off-by: Alexis Green <[email protected]>
> CC: Jesse Jones <[email protected]>

Applied. This one worked, but the other ones you sent didn't.

johannes