BMC/Intel-BMC/linux.git/net/mac80211/util.c, branch dev-4.17

mac80211: limit wmm params to comply with ETSI requirements

2018-03-29T09:11:50+00:00

ETSI has recently added new requirements that restrict the WMM parameter values for 5GHz frequencies. We need to take care of the following scenarios in order to comply with these new requirements: 1. When using mac80211 default values; 2. When the userspace tries to configure its own values; 3. When associating to an AP which advertises WWM IE. When associating to an AP, the client uses the values in the advertised WMM IE. But the AP may not comply with the new ETSI requirements, so the client needs to check the current regulatory rules and use those limits accordingly. Signed-off-by: Haim Dreyfuss Signed-off-by: Luca Coelho Signed-off-by: Johannes Berg

mac80211: notify driver for change in multicast rates

2018-03-23T12:23:17+00:00

With drivers implementing rate control in driver or firmware rate_control_send_low() may not get called, and thus the driver needs to know about changes in the multicast rate. Add and use a new BSS change flag for this. Signed-off-by: Pradeep Kumar Chitrapu [rewrite commit message] Signed-off-by: Johannes Berg

mac80211: call synchronize_net once in the restart flow

2017-12-11T11:18:56+00:00

Currently the restart flow enables RX back, and then proceeds to tear down RX and TX aggregations. The TX aggregation tear down calls synchronize_net(), which waits for packet receiving to be done. This is done for every session, while RX processing is already active, and in some reproductions it takes up to 3 seconds. Add a call once in the restart_work, before we have traffic active again, and remove the subsequent calls when tearing down the aggregation. This requires to move down the code that turns off the reconfig flag in order to be able to test it in _ieee80211_stop_tx_ba_session(). Signed-off-by: Sara Sharon Signed-off-by: Luca Coelho Signed-off-by: Johannes Berg

mac80211: use offsetofend()

2017-09-21T09:42:01+00:00

This was created using the following spatch: @find@ type S; expression M, M2; position p; @@ offsetof(S, M) + sizeof(M2)@p @script:python@ m << find.M; m2 << find.M2; @@ if not m2.endswith('-> ' + m): cocci.include_match(False) @change@ type find.S; expression find.M, find.M2; position find.p; @@ -offsetof(S, M) + sizeof(M2)@p +offsetofend(S, M) Signed-off-by: Johannes Berg

mac80211: simplify and clarify IE splitting

2017-09-21T09:41:58+00:00

There's no need to split off IEs from the ones obtained from userspace, if they were already split off, so for example IEs that went before HT don't have to be listed again to go before VHT. Simplify the code here so it's clearer. While at it, also clarify the comments regarding the DMG (60 GHz) elements. Signed-off-by: Johannes Berg

mac80211: add MESH IE in the correct order

2017-09-05T09:28:51+00:00

VHT MESH support was added, but the order of the IEs wasn't enforced. Fix that. Signed-off-by: Liad Kaufman Signed-off-by: Luca Coelho Signed-off-by: Johannes Berg

networking: introduce and use skb_put_data()

2017-06-16T15:48:37+00:00

A common pattern with skb_put() is to just want to memcpy() some data into the new space, introduce skb_put_data() for this. An spatch similar to the one for skb_put_zero() converts many of the places using it: @@ identifier p, p2; expression len, skb, data; type t, t2; @@ ( -p = skb_put(skb, len); +p = skb_put_data(skb, data, len); | -p = (t)skb_put(skb, len); +p = skb_put_data(skb, data, len); ) ( p2 = (t2)p; -memcpy(p2, data, len); | -memcpy(p, data, len); ) @@ type t, t2; identifier p, p2; expression skb, data; @@ t *p; ... ( -p = skb_put(skb, sizeof(t)); +p = skb_put_data(skb, data, sizeof(t)); | -p = (t *)skb_put(skb, sizeof(t)); +p = skb_put_data(skb, data, sizeof(t)); ) ( p2 = (t2)p; -memcpy(p2, data, sizeof(*p)); | -memcpy(p, data, sizeof(*p)); ) @@ expression skb, len, data; @@ -memcpy(skb_put(skb, len), data, len); +skb_put_data(skb, data, len); (again, manually post-processed to retain some comments) Reviewed-by: Stephen Hemminger Signed-off-by: Johannes Berg Signed-off-by: David S. Miller

networking: convert many more places to skb_put_zero()

2017-06-16T15:48:35+00:00

There were many places that my previous spatch didn't find, as pointed out by yuan linyu in various patches. The following spatch found many more and also removes the now unnecessary casts: @@ identifier p, p2; expression len; expression skb; type t, t2; @@ ( -p = skb_put(skb, len); +p = skb_put_zero(skb, len); | -p = (t)skb_put(skb, len); +p = skb_put_zero(skb, len); ) ... when != p ( p2 = (t2)p; -memset(p2, 0, len); | -memset(p, 0, len); ) @@ type t, t2; identifier p, p2; expression skb; @@ t *p; ... ( -p = skb_put(skb, sizeof(t)); +p = skb_put_zero(skb, sizeof(t)); | -p = (t *)skb_put(skb, sizeof(t)); +p = skb_put_zero(skb, sizeof(t)); ) ... when != p ( p2 = (t2)p; -memset(p2, 0, sizeof(*p)); | -memset(p, 0, sizeof(*p)); ) @@ expression skb, len; @@ -memset(skb_put(skb, len), 0, len); +skb_put_zero(skb, len); Apply it to the tree (with one manual fixup to keep the comment in vxlan.c, which spatch removed.) Signed-off-by: Johannes Berg Signed-off-by: David S. Miller

mac80211: mesh: support sending wide bandwidth CSA

2017-05-24T06:58:54+00:00

To support HT and VHT CSA, beacons and action frames must include the corresponding IEs. Signed-off-by: Simon Wunderlich [make ieee80211_ie_build_wide_bw_cs() return void] Signed-off-by: Johannes Berg

cfg80211: add request id to cfg80211_sched_scan_*() api

2017-04-28T12:51:43+00:00

Have proper request id filled in the SCHED_SCAN_RESULTS and SCHED_SCAN_STOPPED notifications toward user-space by having the driver provide it through the api. Reviewed-by: Hante Meuleman Reviewed-by: Pieter-Paul Giesberts Reviewed-by: Franky Lin Signed-off-by: Arend van Spriel Signed-off-by: Johannes Berg