linux_dsm_epyc7002/net/mac80211/wme.h
Johannes Berg cf0277e714 mac80211: fix skb buffering issue
Since I removed the master netdev, we've been
keeping internal queues only, and even before
that we never told the networking stack above
the virtual interfaces about congestion. This
means that packets are queued in mac80211 and
the upper layers never know, possibly leading
to memory exhaustion and other problems.

This patch makes all interfaces multiqueue and
uses ndo_select_queue to put the packets into
queues per AC. Additionally, when the driver
stops a queue, we now stop all corresponding
queues for the virtual interfaces as well.

The injection case will use VO by default for
non-data frames, and BE for data frames, but
downgrade any data frames according to ACM. It
needs to be fleshed out in the future to allow
chosing the queue/AC in radiotap.

Reported-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Cc: stable@kernel.org [2.6.32]
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-01-05 16:21:40 -05:00

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C

/*
* Copyright 2004, Instant802 Networks, Inc.
* Copyright 2005, Devicescape Software, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _WME_H
#define _WME_H
#include <linux/netdevice.h>
#include "ieee80211_i.h"
#define QOS_CONTROL_ACK_POLICY_NORMAL 0
#define QOS_CONTROL_ACK_POLICY_NOACK 1
#define QOS_CONTROL_ACK_POLICY_SHIFT 5
extern const int ieee802_1d_to_ac[8];
u16 ieee80211_select_queue(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb);
void ieee80211_set_qos_hdr(struct ieee80211_local *local, struct sk_buff *skb);
u16 ieee80211_downgrade_queue(struct ieee80211_local *local,
struct sk_buff *skb);
#endif /* _WME_H */