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cfg80211: unify cfg80211_roamed() and cfg80211_roamed_bss()

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cfg80211_roamed() and cfg80211_roamed_bss() take the same arguments
except that cfg80211_roamed() requires the BSSID and
cfg80211_roamed_bss() requires the bss entry.

Unify the two functions by using a struct for driver initiated
roaming information so that either the BSSID or the bss entry can be
passed as an argument to the unified function.

Signed-off-by: Avraham Stern <avraham.stern@intel.com>
[modified the ath6k, brcm80211, rndis and wlan-ng drivers accordingly]
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
[modify brcmfmac to remove the useless cast, spotted by Arend]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Avraham Stern
2017-04-26 10:58:49 +03:00
committed by Johannes Berg
parent 21a8e9dd52
commit 29ce6ecbb8
10 changed files with 123 additions and 129 deletions
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74
include/net/cfg80211.h
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@@ -2686,8 +2686,7 @@ struct cfg80211_nan_func {
* indication of requesting reassociation.
* In both the driver-initiated and new connect() call initiated roaming
* cases, the result of roaming is indicated with a call to
* cfg80211_roamed() or cfg80211_roamed_bss().
* (invoked with the wireless_dev mutex held)
* cfg80211_roamed(). (invoked with the wireless_dev mutex held)
* @update_connect_params: Update the connect parameters while connected to a
* BSS. The updated parameters can be used by driver/firmware for
* subsequent BSS selection (roaming) decisions and to form the
@@ -5389,52 +5388,47 @@ cfg80211_connect_timeout(struct net_device *dev, const u8 *bssid,
gfp, timeout_reason);
}
/**
* struct cfg80211_roam_info - driver initiated roaming information
*
* @channel: the channel of the new AP
* @bss: entry of bss to which STA got roamed (may be %NULL if %bssid is set)
* @bssid: the BSSID of the new AP (may be %NULL if %bss is set)
* @req_ie: association request IEs (maybe be %NULL)
* @req_ie_len: association request IEs length
* @resp_ie: association response IEs (may be %NULL)
* @resp_ie_len: assoc response IEs length
*/
struct cfg80211_roam_info {
struct ieee80211_channel *channel;
struct cfg80211_bss *bss;
const u8 *bssid;
const u8 *req_ie;
size_t req_ie_len;
const u8 *resp_ie;
size_t resp_ie_len;
};
/**
* cfg80211_roamed - notify cfg80211 of roaming
*
* @dev: network device
* @channel: the channel of the new AP
* @bssid: the BSSID of the new AP
* @req_ie: association request IEs (maybe be %NULL)
* @req_ie_len: association request IEs length
* @resp_ie: association response IEs (may be %NULL)
* @resp_ie_len: assoc response IEs length
* @info: information about the new BSS. struct &cfg80211_roam_info.
* @gfp: allocation flags
*
* It should be called by the underlying driver whenever it roamed
* from one AP to another while connected.
*/
void cfg80211_roamed(struct net_device *dev,
struct ieee80211_channel *channel,
const u8 *bssid,
const u8 *req_ie, size_t req_ie_len,
const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp);
/**
* cfg80211_roamed_bss - notify cfg80211 of roaming
*
* @dev: network device
* @bss: entry of bss to which STA got roamed
* @req_ie: association request IEs (maybe be %NULL)
* @req_ie_len: association request IEs length
* @resp_ie: association response IEs (may be %NULL)
* @resp_ie_len: assoc response IEs length
* @gfp: allocation flags
*
* This is just a wrapper to notify cfg80211 of roaming event with driver
* passing bss to avoid a race in timeout of the bss entry. It should be
* called by the underlying driver whenever it roamed from one AP to another
* while connected. Drivers which have roaming implemented in firmware
* may use this function to avoid a race in bss entry timeout where the bss
* entry of the new AP is seen in the driver, but gets timed out by the time
* it is accessed in __cfg80211_roamed() due to delay in scheduling
* This function may be called with the driver passing either the BSSID of the
* new AP or passing the bss entry to avoid a race in timeout of the bss entry.
* It should be called by the underlying driver whenever it roamed from one AP
* to another while connected. Drivers which have roaming implemented in
* firmware should pass the bss entry to avoid a race in bss entry timeout where
* the bss entry of the new AP is seen in the driver, but gets timed out by the
* time it is accessed in __cfg80211_roamed() due to delay in scheduling
* rdev->event_work. In case of any failures, the reference is released
* either in cfg80211_roamed_bss() or in __cfg80211_romed(), Otherwise,
* it will be released while diconneting from the current bss.
* either in cfg80211_roamed() or in __cfg80211_romed(), Otherwise, it will be
* released while diconneting from the current bss.
*/
void cfg80211_roamed_bss(struct net_device *dev, struct cfg80211_bss *bss,
const u8 *req_ie, size_t req_ie_len,
const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp);
void cfg80211_roamed(struct net_device *dev, struct cfg80211_roam_info *info,
gfp_t gfp);
/**
* cfg80211_disconnected - notify cfg80211 that connection was dropped