From fb1c1cd6c5a8988b14c5c6c0dfe55542df3a34c6 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 26 Sep 2007 15:19:43 +0200 Subject: [PATCH] [PATCH] mac80211: fix vlan bug VLAN interfaces have yet another bug: they aren't accounted for properly in the receive path in prepare_for_handlers(). I noticed this by code inspection, but it would be easy for the compiler to catch such things if we'd just use the proper enum where appropriate. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/mac80211/ieee80211.c | 7 +++++++ net/mac80211/ieee80211_i.h | 2 +- net/mac80211/ieee80211_iface.c | 3 +++ net/mac80211/rx.c | 8 ++++++++ 4 files changed, 19 insertions(+), 1 deletion(-) diff --git a/net/mac80211/ieee80211.c b/net/mac80211/ieee80211.c index 52638194e4..b1180536c3 100644 --- a/net/mac80211/ieee80211.c +++ b/net/mac80211/ieee80211.c @@ -344,6 +344,13 @@ static int ieee80211_open(struct net_device *dev) if (!sdata->u.vlan.ap) return -ENOLINK; break; + case IEEE80211_IF_TYPE_AP: + case IEEE80211_IF_TYPE_MGMT: + case IEEE80211_IF_TYPE_STA: + case IEEE80211_IF_TYPE_MNTR: + case IEEE80211_IF_TYPE_IBSS: + /* no special treatment */ + break; } if (local->open_count == 0) { diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index a5961f16f2..636de70cd8 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -290,7 +290,7 @@ struct ieee80211_if_sta { #define IEEE80211_SDATA_SHORT_PREAMBLE BIT(3) struct ieee80211_sub_if_data { struct list_head list; - unsigned int type; + enum ieee80211_if_types type; struct wireless_dev wdev; diff --git a/net/mac80211/ieee80211_iface.c b/net/mac80211/ieee80211_iface.c index 369ee4f52a..60cee6e602 100644 --- a/net/mac80211/ieee80211_iface.c +++ b/net/mac80211/ieee80211_iface.c @@ -243,6 +243,9 @@ void ieee80211_if_reinit(struct net_device *dev) ieee80211_if_sdata_deinit(sdata); switch (sdata->type) { + case IEEE80211_IF_TYPE_MGMT: + /* nothing to do */ + break; case IEEE80211_IF_TYPE_AP: { /* Remove all virtual interfaces that use this BSS * as their sdata->bss */ diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index 453ccab060..34adc5288f 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -1425,6 +1425,7 @@ static int prepare_for_handlers(struct ieee80211_sub_if_data *sdata, rx->sta = ieee80211_ibss_add_sta(sdata->dev, rx->skb, bssid, hdr->addr2); break; + case IEEE80211_IF_TYPE_VLAN: case IEEE80211_IF_TYPE_AP: if (!bssid) { if (compare_ether_addr(sdata->dev->dev_addr, @@ -1449,6 +1450,13 @@ static int prepare_for_handlers(struct ieee80211_sub_if_data *sdata, if (compare_ether_addr(sdata->u.wds.remote_addr, hdr->addr2)) return 0; break; + case IEEE80211_IF_TYPE_MNTR: + /* take everything */ + break; + case IEEE80211_IF_TYPE_MGMT: + /* should never get here */ + WARN_ON(1); + break; } return 1; -- 2.39.5