From 8e8b41f9d8c8e63fc92f899ace8da91a490ac573 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 15 Mar 2012 10:16:16 +0100 Subject: [PATCH] cfg80211: enforce lack of interface combinations My grand plan to allow drivers to gradually move over to advertising virtual interface combinations and only enforce with drivers that do want it enforced doesn't seem to be working out, only Christian ever added the advertising (to carl9170), nobody else did. Begin enforcing combinations in cfg80211 so that users can rely on the information reported about a device. Cc: "Luis R. Rodriguez" Cc: Jouni Malinen Cc: Vasanthakumar Thiagarajan Cc: Senthil Balasubramanian Cc: Kalle Valo Cc: Jiri Slaby Cc: Nick Kossifidis Cc: Bob Copeland Cc: Bing Zhao Cc: Lennert Buytenhek Cc: Ivo van Doorn Cc: Gertjan van Wingerde Cc: Helmut Schaa Cc: Luciano Coelho Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- include/net/cfg80211.h | 6 +----- net/wireless/core.c | 4 ---- net/wireless/util.c | 10 +++------- 3 files changed, 4 insertions(+), 16 deletions(-) diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index d17ad5f..815dc3f 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -1745,10 +1745,6 @@ struct cfg80211_ops { * hints read the documenation for regulatory_hint_found_beacon() * @WIPHY_FLAG_NETNS_OK: if not set, do not allow changing the netns of this * wiphy at all - * @WIPHY_FLAG_ENFORCE_COMBINATIONS: Set this flag to enforce interface - * combinations for this device. This flag is used for backward - * compatibility only until all drivers advertise combinations and - * they will always be enforced. * @WIPHY_FLAG_PS_ON_BY_DEFAULT: if set to true, powersave will be enabled * by default -- this flag will be set depending on the kernel's default * on wiphy_new(), but can be changed by the driver if it has a good @@ -1793,7 +1789,7 @@ enum wiphy_flags { WIPHY_FLAG_IBSS_RSN = BIT(8), WIPHY_FLAG_MESH_AUTH = BIT(10), WIPHY_FLAG_SUPPORTS_SCHED_SCAN = BIT(11), - WIPHY_FLAG_ENFORCE_COMBINATIONS = BIT(12), + /* use hole at 12 */ WIPHY_FLAG_SUPPORTS_FW_ROAM = BIT(13), WIPHY_FLAG_AP_UAPSD = BIT(14), WIPHY_FLAG_SUPPORTS_TDLS = BIT(15), diff --git a/net/wireless/core.c b/net/wireless/core.c index 59f4a7e..39f2538 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -422,10 +422,6 @@ static int wiphy_verify_combinations(struct wiphy *wiphy) const struct ieee80211_iface_combination *c; int i, j; - /* If we have combinations enforce them */ - if (wiphy->n_iface_combinations) - wiphy->flags |= WIPHY_FLAG_ENFORCE_COMBINATIONS; - for (i = 0; i < wiphy->n_iface_combinations; i++) { u32 cnt = 0; u16 all_iftypes = 0; diff --git a/net/wireless/util.c b/net/wireless/util.c index 1b7a08d..ffced85 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -946,13 +946,6 @@ int cfg80211_can_change_interface(struct cfg80211_registered_device *rdev, if (rdev->wiphy.software_iftypes & BIT(iftype)) return 0; - /* - * Drivers will gradually all set this flag, until all - * have it we only enforce for those that set it. - */ - if (!(rdev->wiphy.flags & WIPHY_FLAG_ENFORCE_COMBINATIONS)) - return 0; - memset(num, 0, sizeof(num)); num[iftype] = 1; @@ -972,6 +965,9 @@ int cfg80211_can_change_interface(struct cfg80211_registered_device *rdev, } mutex_unlock(&rdev->devlist_mtx); + if (total == 1) + return 0; + for (i = 0; i < rdev->wiphy.n_iface_combinations; i++) { const struct ieee80211_iface_combination *c; struct ieee80211_iface_limit *limits; -- 2.7.4