* [PATCH 0/3] antenna configuration
@ 2010-05-12 8:23 Bruno Randolf
2010-05-12 8:23 ` [PATCH 1/3] cfg80211: Add nl80211 " Bruno Randolf
` (2 more replies)
0 siblings, 3 replies; 6+ messages in thread
From: Bruno Randolf @ 2010-05-12 8:23 UTC (permalink / raw)
To: johannes, linville; +Cc: linux-wireless, holgerschurig
resending my antenna patches addressing all previous comments.
bruno
---
Bruno Randolf (3):
cfg80211: Add nl80211 antenna configuration
mac80211: Add antenna configuration
ath5k: Add support for antenna configuration
drivers/net/wireless/ath/ath5k/base.c | 34 ++++++++++
include/linux/nl80211.h | 12 +++
include/net/cfg80211.h | 3 +
include/net/mac80211.h | 2 +
net/mac80211/cfg.c | 16 +++++
net/mac80211/driver-ops.h | 23 +++++++
net/mac80211/driver-trace.h | 50 ++++++++++++++
net/wireless/nl80211.c | 116 +++++++++++++++++++++++++++++++++
8 files changed, 256 insertions(+), 0 deletions(-)
--
Signature
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH 1/3] cfg80211: Add nl80211 antenna configuration
2010-05-12 8:23 [PATCH 0/3] antenna configuration Bruno Randolf
@ 2010-05-12 8:23 ` Bruno Randolf
2010-05-12 8:29 ` Johannes Berg
2010-05-12 8:23 ` [PATCH 2/3] mac80211: Add " Bruno Randolf
2010-05-12 8:23 ` [PATCH 3/3] ath5k: Add support for " Bruno Randolf
2 siblings, 1 reply; 6+ messages in thread
From: Bruno Randolf @ 2010-05-12 8:23 UTC (permalink / raw)
To: johannes, linville; +Cc: linux-wireless, holgerschurig
Allow setting TX and RX antenna configuration via nl80211/cfg80211.
The antenna configuration is defined as a bitmap of allowed antennas. This
bitmap is 8 bit at the moment, each bit representing one antenna. If multiple
antennas are selected, the driver may use diversity for receive and transmit.
This allows for a simple, yet flexible configuration interface for antennas,
while drivers may reject configurations they cannot support.
Signed-off-by: Bruno Randolf <br1@einfach.org>
---
include/linux/nl80211.h | 12 +++++
include/net/cfg80211.h | 3 +
net/wireless/nl80211.c | 116 +++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 131 insertions(+), 0 deletions(-)
diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index b7c77f9..46a2c76 100644
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -341,6 +341,9 @@
* of any other interfaces, and other interfaces will again take
* precedence when they are used.
*
+ * @NL80211_CMD_SET_ANTENNA: Set a bitmap of antennas to use.
+ * @NL80211_CMD_GET_ANTENNA: Get antenna configuration from driver.
+ *
* @NL80211_CMD_MAX: highest used command number
* @__NL80211_CMD_AFTER_LAST: internal use
*/
@@ -441,6 +444,9 @@ enum nl80211_commands {
NL80211_CMD_SET_CHANNEL,
+ NL80211_CMD_SET_ANTENNA,
+ NL80211_CMD_GET_ANTENNA,
+
/* add new commands above here */
/* used to define NL80211_CMD_MAX below */
@@ -725,6 +731,9 @@ enum nl80211_commands {
* @NL80211_ATTR_AP_ISOLATE: (AP mode) Do not forward traffic between stations
* connected to this BSS.
*
+ * @NL80211_ATTR_ANTENNA_TX: Bitmap of antennas to use for transmitting.
+ * @NL80211_ATTR_ANTENNA_RX: Bitmap of antennas to use for receiving.
+ *
* @NL80211_ATTR_MAX: highest attribute number currently defined
* @__NL80211_ATTR_AFTER_LAST: internal use
*/
@@ -882,6 +891,9 @@ enum nl80211_attrs {
NL80211_ATTR_AP_ISOLATE,
+ NL80211_ATTR_ANTENNA_TX,
+ NL80211_ATTR_ANTENNA_RX,
+
/* add attributes here, update the policy in nl80211.c */
__NL80211_ATTR_AFTER_LAST,
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index b44a2e5..8861f40 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1176,6 +1176,9 @@ struct cfg80211_ops {
int (*set_cqm_rssi_config)(struct wiphy *wiphy,
struct net_device *dev,
s32 rssi_thold, u32 rssi_hyst);
+
+ int (*set_antenna)(struct wiphy *wiphy, u8 tx_ant, u8 rx_ant);
+ int (*get_antenna)(struct wiphy *wiphy, u8 *tx_ant, u8 *rx_ant);
};
/*
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index aaa1aad..29998e0 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -153,6 +153,8 @@ static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
[NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
[NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
[NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
+ [NL80211_ATTR_ANTENNA_TX] = { .type = NLA_U8 },
+ [NL80211_ATTR_ANTENNA_RX] = { .type = NLA_U8 },
};
/* policy for the attributes */
@@ -590,6 +592,8 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
NLA_PUT_U32(msg, i, NL80211_CMD_SET_WIPHY_NETNS);
}
CMD(set_channel, SET_CHANNEL);
+ CMD(set_antenna, SET_ANTENNA);
+ CMD(get_antenna, GET_ANTENNA);
#undef CMD
@@ -4963,6 +4967,106 @@ out:
return err;
}
+static int nl80211_set_antenna(struct sk_buff *skb, struct genl_info *info)
+{
+ struct cfg80211_registered_device *rdev;
+ int res;
+ u8 rx_ant = 0, tx_ant = 0;
+
+ if (!info->attrs[NL80211_ATTR_WIPHY] ||
+ !info->attrs[NL80211_ATTR_ANTENNA_TX] ||
+ !info->attrs[NL80211_ATTR_ANTENNA_RX]) {
+ return -EINVAL;
+ }
+
+ tx_ant = nla_get_u8(info->attrs[NL80211_ATTR_ANTENNA_TX]);
+ rx_ant = nla_get_u8(info->attrs[NL80211_ATTR_ANTENNA_RX]);
+
+ rtnl_lock();
+
+ rdev = cfg80211_get_dev_from_info(info);
+ if (IS_ERR(rdev)) {
+ res = -ENODEV;
+ goto unlock_rtnl;
+ }
+
+ if (!rdev->ops->set_antenna) {
+ res = -EOPNOTSUPP;
+ goto unlock_rdev;
+ }
+
+ res = rdev->ops->set_antenna(&rdev->wiphy, tx_ant, rx_ant);
+
+ unlock_rdev:
+ cfg80211_unlock_rdev(rdev);
+
+ unlock_rtnl:
+ rtnl_unlock();
+ return res;
+}
+
+static int nl80211_get_antenna(struct sk_buff *skb, struct genl_info *info)
+{
+ struct cfg80211_registered_device *rdev;
+ struct sk_buff *msg;
+ void *hdr;
+ int res;
+ u8 tx_ant, rx_ant;
+
+ if (!info->attrs[NL80211_ATTR_WIPHY])
+ return -EINVAL;
+
+ rtnl_lock();
+
+ rdev = cfg80211_get_dev_from_info(info);
+ if (IS_ERR(rdev)) {
+ res = -ENODEV;
+ goto unlock_rtnl;
+ }
+
+ if (!rdev->ops->get_antenna) {
+ res = -EOPNOTSUPP;
+ goto unlock_rdev;
+ }
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg) {
+ res = -ENOMEM;
+ goto unlock_rdev;
+ }
+
+ hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
+ NL80211_CMD_GET_ANTENNA);
+ if (!hdr) {
+ res = -ENOMEM;
+ goto free_msg;
+ }
+
+ res = rdev->ops->get_antenna(&rdev->wiphy, &tx_ant, &rx_ant);
+ if (res)
+ goto free_msg;
+
+ NLA_PUT_U8(msg, NL80211_ATTR_ANTENNA_TX, tx_ant);
+ NLA_PUT_U8(msg, NL80211_ATTR_ANTENNA_RX, rx_ant);
+
+ genlmsg_end(msg, hdr);
+ res = genlmsg_reply(msg, info);
+ goto unlock_rdev;
+
+ nla_put_failure:
+ res = -ENOBUFS;
+
+ free_msg:
+ nlmsg_free(msg);
+
+ unlock_rdev:
+ cfg80211_unlock_rdev(rdev);
+
+ unlock_rtnl:
+ rtnl_unlock();
+ return res;
+}
+
static struct genl_ops nl80211_ops[] = {
{
.cmd = NL80211_CMD_GET_WIPHY,
@@ -5279,6 +5383,18 @@ static struct genl_ops nl80211_ops[] = {
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
},
+ {
+ .cmd = NL80211_CMD_SET_ANTENNA,
+ .doit = nl80211_set_antenna,
+ .policy = nl80211_policy,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = NL80211_CMD_GET_ANTENNA,
+ .doit = nl80211_get_antenna,
+ .policy = nl80211_policy,
+ /* can be retrieved by unprivileged users */
+ },
};
static struct genl_multicast_group nl80211_mlme_mcgrp = {
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH 2/3] mac80211: Add antenna configuration
2010-05-12 8:23 [PATCH 0/3] antenna configuration Bruno Randolf
2010-05-12 8:23 ` [PATCH 1/3] cfg80211: Add nl80211 " Bruno Randolf
@ 2010-05-12 8:23 ` Bruno Randolf
2010-05-12 8:23 ` [PATCH 3/3] ath5k: Add support for " Bruno Randolf
2 siblings, 0 replies; 6+ messages in thread
From: Bruno Randolf @ 2010-05-12 8:23 UTC (permalink / raw)
To: johannes, linville; +Cc: linux-wireless, holgerschurig
Allow antenna configuration by calling driver's function for it.
Signed-off-by: Bruno Randolf <br1@einfach.org>
---
include/net/mac80211.h | 2 ++
net/mac80211/cfg.c | 16 ++++++++++++++
net/mac80211/driver-ops.h | 23 ++++++++++++++++++++
net/mac80211/driver-trace.h | 50 +++++++++++++++++++++++++++++++++++++++++++
4 files changed, 91 insertions(+), 0 deletions(-)
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 9448a5b..1a8f97a 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -1694,6 +1694,8 @@ struct ieee80211_ops {
int (*testmode_cmd)(struct ieee80211_hw *hw, void *data, int len);
#endif
void (*flush)(struct ieee80211_hw *hw, bool drop);
+ int (*set_antenna)(struct ieee80211_hw *hw, u8 tx_ant, u8 rx_ant);
+ int (*get_antenna)(struct ieee80211_hw *hw, u8 *tx_ant, u8 *rx_ant);
};
/**
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index c7000a6..efd04bc 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1560,6 +1560,20 @@ static int ieee80211_action(struct wiphy *wiphy, struct net_device *dev,
channel_type, buf, len, cookie);
}
+static int ieee80211_set_antenna(struct wiphy *wiphy, u8 tx_ant, u8 rx_ant)
+{
+ struct ieee80211_local *local = wiphy_priv(wiphy);
+
+ return drv_set_antenna(local, tx_ant, rx_ant);
+}
+
+static int ieee80211_get_antenna(struct wiphy *wiphy, u8 *tx_ant, u8 *rx_ant)
+{
+ struct ieee80211_local *local = wiphy_priv(wiphy);
+
+ return drv_get_antenna(local, tx_ant, rx_ant);
+}
+
struct cfg80211_ops mac80211_config_ops = {
.add_virtual_intf = ieee80211_add_iface,
.del_virtual_intf = ieee80211_del_iface,
@@ -1611,4 +1625,6 @@ struct cfg80211_ops mac80211_config_ops = {
.cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
.action = ieee80211_action,
.set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
+ .set_antenna = ieee80211_set_antenna,
+ .get_antenna = ieee80211_get_antenna,
};
diff --git a/net/mac80211/driver-ops.h b/net/mac80211/driver-ops.h
index 997008e..f1b031a 100644
--- a/net/mac80211/driver-ops.h
+++ b/net/mac80211/driver-ops.h
@@ -373,4 +373,27 @@ static inline void drv_flush(struct ieee80211_local *local, bool drop)
if (local->ops->flush)
local->ops->flush(&local->hw, drop);
}
+
+static inline int drv_set_antenna(struct ieee80211_local *local,
+ u8 tx_ant, u8 rx_ant)
+{
+ int ret = -EOPNOTSUPP;
+ might_sleep();
+ if (local->ops->set_antenna)
+ ret = local->ops->set_antenna(&local->hw, tx_ant, rx_ant);
+ trace_drv_set_antenna(local, tx_ant, rx_ant, ret);
+ return ret;
+}
+
+static inline int drv_get_antenna(struct ieee80211_local *local,
+ u8 *tx_ant, u8 *rx_ant)
+{
+ int ret = -EOPNOTSUPP;
+ might_sleep();
+ if (local->ops->get_antenna)
+ ret = local->ops->get_antenna(&local->hw, tx_ant, rx_ant);
+ trace_drv_get_antenna(local, *tx_ant, *rx_ant, ret);
+ return ret;
+}
+
#endif /* __MAC80211_DRIVER_OPS */
diff --git a/net/mac80211/driver-trace.h b/net/mac80211/driver-trace.h
index ce734b5..466a509 100644
--- a/net/mac80211/driver-trace.h
+++ b/net/mac80211/driver-trace.h
@@ -774,6 +774,56 @@ TRACE_EVENT(drv_flush,
)
);
+TRACE_EVENT(drv_set_antenna,
+ TP_PROTO(struct ieee80211_local *local, u8 tx_ant, u8 rx_ant, int ret),
+
+ TP_ARGS(local, tx_ant, rx_ant, ret),
+
+ TP_STRUCT__entry(
+ LOCAL_ENTRY
+ __field(u8, tx_ant)
+ __field(u8, rx_ant)
+ __field(int, ret)
+ ),
+
+ TP_fast_assign(
+ LOCAL_ASSIGN;
+ __entry->tx_ant = tx_ant;
+ __entry->rx_ant = rx_ant;
+ __entry->ret = ret;
+ ),
+
+ TP_printk(
+ LOCAL_PR_FMT " tx_ant:%d rx_ant:%d ret:%d",
+ LOCAL_PR_ARG, __entry->tx_ant, __entry->rx_ant, __entry->ret
+ )
+);
+
+TRACE_EVENT(drv_get_antenna,
+ TP_PROTO(struct ieee80211_local *local, u8 tx_ant, u8 rx_ant, int ret),
+
+ TP_ARGS(local, tx_ant, rx_ant, ret),
+
+ TP_STRUCT__entry(
+ LOCAL_ENTRY
+ __field(u8, tx_ant)
+ __field(u8, rx_ant)
+ __field(int, ret)
+ ),
+
+ TP_fast_assign(
+ LOCAL_ASSIGN;
+ __entry->tx_ant = tx_ant;
+ __entry->rx_ant = rx_ant;
+ __entry->ret = ret;
+ ),
+
+ TP_printk(
+ LOCAL_PR_FMT " tx_ant:%d rx_ant:%d ret:%d",
+ LOCAL_PR_ARG, __entry->tx_ant, __entry->rx_ant, __entry->ret
+ )
+);
+
/*
* Tracing for API calls that drivers call.
*/
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH 3/3] ath5k: Add support for antenna configuration
2010-05-12 8:23 [PATCH 0/3] antenna configuration Bruno Randolf
2010-05-12 8:23 ` [PATCH 1/3] cfg80211: Add nl80211 " Bruno Randolf
2010-05-12 8:23 ` [PATCH 2/3] mac80211: Add " Bruno Randolf
@ 2010-05-12 8:23 ` Bruno Randolf
2 siblings, 0 replies; 6+ messages in thread
From: Bruno Randolf @ 2010-05-12 8:23 UTC (permalink / raw)
To: johannes, linville; +Cc: linux-wireless, holgerschurig
Support setting the antenna configuration via cfg/mac80211. At the moment only
allow the simple pre-defined configurations we already have (fixed antenna A/B
or diversity), but more advanced settings should be possible later.
Signed-off-by: Bruno Randolf <br1@einfach.org>
---
drivers/net/wireless/ath/ath5k/base.c | 34 +++++++++++++++++++++++++++++++++
1 files changed, 34 insertions(+), 0 deletions(-)
diff --git a/drivers/net/wireless/ath/ath5k/base.c b/drivers/net/wireless/ath/ath5k/base.c
index 053cb36..9f42af7 100644
--- a/drivers/net/wireless/ath/ath5k/base.c
+++ b/drivers/net/wireless/ath/ath5k/base.c
@@ -256,6 +256,8 @@ static void ath5k_sw_scan_start(struct ieee80211_hw *hw);
static void ath5k_sw_scan_complete(struct ieee80211_hw *hw);
static void ath5k_set_coverage_class(struct ieee80211_hw *hw,
u8 coverage_class);
+static int ath5k_set_antenna(struct ieee80211_hw *hw, u8 tx_ant, u8 rx_ant);
+static int ath5k_get_antenna(struct ieee80211_hw *hw, u8 *tx_ant, u8 *rx_ant);
static const struct ieee80211_ops ath5k_hw_ops = {
.tx = ath5k_tx,
@@ -277,6 +279,8 @@ static const struct ieee80211_ops ath5k_hw_ops = {
.sw_scan_start = ath5k_sw_scan_start,
.sw_scan_complete = ath5k_sw_scan_complete,
.set_coverage_class = ath5k_set_coverage_class,
+ .set_antenna = ath5k_set_antenna,
+ .get_antenna = ath5k_get_antenna,
};
/*
@@ -3482,3 +3486,33 @@ static void ath5k_set_coverage_class(struct ieee80211_hw *hw, u8 coverage_class)
ath5k_hw_set_coverage_class(sc->ah, coverage_class);
mutex_unlock(&sc->lock);
}
+
+static int ath5k_set_antenna(struct ieee80211_hw *hw, u8 tx_ant, u8 rx_ant)
+{
+ struct ath5k_softc *sc = hw->priv;
+
+ if (tx_ant == 1 && rx_ant == 1)
+ ath5k_hw_set_antenna_mode(sc->ah, AR5K_ANTMODE_FIXED_A);
+ else if (tx_ant == 2 && rx_ant == 2)
+ ath5k_hw_set_antenna_mode(sc->ah, AR5K_ANTMODE_FIXED_B);
+ else if (tx_ant == 3 && rx_ant == 3)
+ ath5k_hw_set_antenna_mode(sc->ah, AR5K_ANTMODE_DEFAULT);
+ else
+ return -EINVAL;
+ return 0;
+}
+
+static int ath5k_get_antenna(struct ieee80211_hw *hw, u8 *tx_ant, u8 *rx_ant)
+{
+ struct ath5k_softc *sc = hw->priv;
+
+ switch (sc->ah->ah_ant_mode) {
+ case AR5K_ANTMODE_FIXED_A:
+ *tx_ant = 1; *rx_ant = 1; break;
+ case AR5K_ANTMODE_FIXED_B:
+ *tx_ant = 2; *rx_ant = 2; break;
+ case AR5K_ANTMODE_DEFAULT:
+ *tx_ant = 3; *rx_ant = 3; break;
+ }
+ return 0;
+}
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH 1/3] cfg80211: Add nl80211 antenna configuration
2010-05-12 8:23 ` [PATCH 1/3] cfg80211: Add nl80211 " Bruno Randolf
@ 2010-05-12 8:29 ` Johannes Berg
2010-05-14 8:10 ` Bruno Randolf
0 siblings, 1 reply; 6+ messages in thread
From: Johannes Berg @ 2010-05-12 8:29 UTC (permalink / raw)
To: Bruno Randolf; +Cc: linville, linux-wireless, holgerschurig
On Wed, 2010-05-12 at 17:23 +0900, Bruno Randolf wrote:
> + CMD(get_antenna, GET_ANTENNA);
I'm wondering ... does get_antenna really make sense as a separate
command? Seems like we could just as well report it as part of the wiphy
information dump?
johannes
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 1/3] cfg80211: Add nl80211 antenna configuration
2010-05-12 8:29 ` Johannes Berg
@ 2010-05-14 8:10 ` Bruno Randolf
0 siblings, 0 replies; 6+ messages in thread
From: Bruno Randolf @ 2010-05-14 8:10 UTC (permalink / raw)
To: Johannes Berg; +Cc: linville, linux-wireless, holgerschurig
On Wednesday 12 May 2010 17:29:54 Johannes Berg wrote:
> On Wed, 2010-05-12 at 17:23 +0900, Bruno Randolf wrote:
> > + CMD(get_antenna, GET_ANTENNA);
>
> I'm wondering ... does get_antenna really make sense as a separate
> command? Seems like we could just as well report it as part of the wiphy
> information dump?
i don't insist on a separate command, but i don't know where else to put it.
you mean "iw phy0 info"? that shows more a list of possible configuration
options than the actual current configuration: like the list of channels,
modes, bitrates, supported commands, etc... with the exception of coverage
class... i feel like it doesn't really fit in there. maybe iw needs some
command to show the device configuration (channel, antenna, essid, bssid, etc
...)???
bruno
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2010-05-14 8:10 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2010-05-12 8:23 [PATCH 0/3] antenna configuration Bruno Randolf
2010-05-12 8:23 ` [PATCH 1/3] cfg80211: Add nl80211 " Bruno Randolf
2010-05-12 8:29 ` Johannes Berg
2010-05-14 8:10 ` Bruno Randolf
2010-05-12 8:23 ` [PATCH 2/3] mac80211: Add " Bruno Randolf
2010-05-12 8:23 ` [PATCH 3/3] ath5k: Add support for " Bruno Randolf
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