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cfg80211: Separate available antennas for RX and TX

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As has been pointed out by Daniel Halperin some devices (e.g. Intel IWL5100)
can only TX from a subset of RX antennas, so use separate availability masks
for RX and TX.

Signed-off-by: Bruno Randolf <br1@einfach.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Bruno Randolf 2010-12-16 11:30:22 +09:00 committed by John W. Linville
parent c7108a7111
commit 7f531e03ab
2 changed files with 19 additions and 10 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

12
include/net/cfg80211.h
View file

@ -1482,8 +1482,13 @@ struct ieee80211_txrx_stypes {
* transmitted through nl80211, points to an array indexed by interface
* type
*
* @available_antennas: bitmap of antennas which are available to configure.
* antenna configuration commands will be rejected unless this is set.
* @available_antennas_tx: bitmap of antennas which are available to be
* configured as TX antennas. Antenna configuration commands will be
* rejected unless this or @available_antennas_rx is set.
*
* @available_antennas_rx: bitmap of antennas which are available to be
* configured as RX antennas. Antenna configuration commands will be
* rejected unless this or @available_antennas_tx is set.
*
* @max_remain_on_channel_duration: Maximum time a remain-on-channel operation
* may request, if implemented.
@ -1528,7 +1533,8 @@ struct wiphy {
u8 max_num_pmkids;
u32 available_antennas;
u32 available_antennas_tx;
u32 available_antennas_rx;
/* If multiple wiphys are registered and you're handed e.g.
* a regular netdev with assigned ieee80211_ptr, you won't

17
net/wireless/nl80211.c
View file

@ -605,7 +605,8 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
if (dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL)
NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE);
if (dev->wiphy.available_antennas && dev->ops->get_antenna) {
if ((dev->wiphy.available_antennas_tx ||
dev->wiphy.available_antennas_rx) && dev->ops->get_antenna) {
u32 tx_ant = 0, rx_ant = 0;
int res;
res = dev->ops->get_antenna(&dev->wiphy, &tx_ant, &rx_ant);
@ -1107,7 +1108,9 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
u32 tx_ant, rx_ant;
if (!rdev->wiphy.available_antennas || !rdev->ops->set_antenna) {
if ((!rdev->wiphy.available_antennas_tx &&
!rdev->wiphy.available_antennas_rx) ||
!rdev->ops->set_antenna) {
result = -EOPNOTSUPP;
goto bad_res;
}
@ -1116,15 +1119,15 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
/* reject antenna configurations which don't match the
* available antenna mask, except for the "all" mask */
if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas)) ||
(~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas))) {
* available antenna masks, except for the "all" mask */
if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
(~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
result = -EINVAL;
goto bad_res;
}
tx_ant = tx_ant & rdev->wiphy.available_antennas;
rx_ant = rx_ant & rdev->wiphy.available_antennas;
tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
result = rdev->ops->set_antenna(&rdev->wiphy, tx_ant, rx_ant);
if (result)