kernel.git/net/mac80211/tx.c, branch linux-2.6.25.y

mac80211: detect driver tx bugs

2008-07-24T16:14:02Z

When a driver rejects a frame in it's ->tx() callback, it must also stop queues, otherwise mac80211 can go into a loop here. Detect this situation and abort the loop after five retries, warning about the driver bug. This patch was added to mainline as commit ef3a62d272f033989e83eb1f26505f93f93e3e69. Thanks to Larry Finger for doing the -stable port. Cc: Larry Finger Signed-off-by: Johannes Berg Signed-off-by: David S. Miller

mac80211: Initialize vif pointer

2008-01-28T23:10:08Z

Before calling update_beacon() mac80211 must initialize the control.vif pointer so it can be used by the driver to determine which interface is trying to send the beacon. v2: ieee80211_beacon_get() should also initialize the vif pointer since it can be called by mac80211 internally before calling config_interface(). Signed-off-by: Ivo van Doorn Acked-by: Johannes Berg Signed-off-by: John W. Linville

mac80211: add unified BSS configuration

2008-01-28T23:09:43Z

This patch (based on Ron Rindjunsky's) creates a framework for a unified way to pass BSS configuration to drivers that require the information, e.g. for implementing power save mode. This patch introduces new ieee80211_bss_conf structure that is passed to the driver via the new bss_info_changed() callback when the BSS configuration changes. This new BSS configuration infrastructure adds the following new features: * drivers are notified of their association AID * drivers are notified of association status and replaces the erp_ie_changed() callback. The patch also does the relevant driver updates for the latter change. Signed-off-by: Ron Rindjunsky Signed-off-by: Johannes Berg Signed-off-by: John W. Linville

mac80211: add beacon configuration via cfg80211

2008-01-28T23:09:38Z

This patch implements the cfg80211 hooks for configuring beaconing on an access point interface in mac80211. While doing so, it fixes a number of races that could badly crash the machine when the beacon is changed while being requested by the driver. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville

mac80211: move interface type to vif structure

2008-01-28T23:09:37Z

Drivers that support mixed AP/STA operation may well need to know the type of a virtual interface when iterating over them. The easiest way to support that is to move the interface type variable into the vif structure. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville

mac80211: dont use interface indices in drivers

2008-01-28T23:09:36Z

This patch gets rid of the if_id stuff where possible in favour of a new per-virtual-interface structure "struct ieee80211_vif". This structure is located at the end of the per-interface structure and contains a variable length driver-use data area. This has two advantages: * removes the need to look up interfaces by if_id, this is better for working with network namespaces and performance * allows drivers to store and retrieve per-interface data without having to allocate own lists/hash tables Signed-off-by: Johannes Berg Signed-off-by: John W. Linville

mac80211: remove misleading 'res' variable

2008-01-28T23:00:55Z

When this function returns != CONTINUE, it needs to put the station struct it has acquired. Hence, having this unused variable is not just superfluous but also misleading. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville Signed-off-by: David S. Miller

mac80211: move tx crypto decision

2008-01-28T22:59:53Z

This patch moves the decision making about whether a frame is encrypted with a certain algorithm up into the TX handlers rather than having it in the crypto algorithm implementation. This fixes a problem with the radiotap injection code where injecting a non-data packet and requesting encryption could end up asking the driver to encrypt a packet without giving it a key. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville Signed-off-by: David S. Miller

mac80211: allow easier multicast/broadcast buffering in hardware

2008-01-28T22:59:47Z

There are various decisions influencing the decision whether to buffer a frame for after the next DTIM beacon. The "do we have stations in PS mode" condition cannot be tested by the driver so mac80211 has to do that. To ease driver writing for hardware that can buffer frames until after the next DTIM beacon, introduce a new txctl flag telling the driver to buffer a specific frame. While at it, restructure and comment the code for multicast buffering and remove spurious "inline" directives. Signed-off-by: Johannes Berg Cc: Michael Buesch Signed-off-by: John W. Linville Signed-off-by: David S. Miller

mac80211: clean up eapol handling in TX path

2008-01-28T22:59:46Z

The previous patch left only one user of the ieee80211_is_eapol() function and that user can be eliminated easily by introducing a new "frame is EAPOL" flag to handle the frame specially (we already have this information) instead of doing the (expensive) ieee80211_is_eapol() all the time. Also, allow unencrypted frames to be sent when they are injected. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville Signed-off-by: David S. Miller