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authorArend van Spriel <arend@broadcom.com>2013-04-18 15:49:00 +0200
committerJohannes Berg <johannes.berg@intel.com>2013-04-22 15:48:00 +0200
commit5de17984898c5758fc6ebe08eccea9f4b6548914 (patch)
tree17aab780c025cfac0bd5a8b010b8ea9c138ff780 /net/wireless/trace.h
parenta36473621c871df14bbf2106ab0721b475aac8e0 (diff)
cfg80211: introduce critical protocol indication from user-space
Some protocols need a more reliable connection to complete successful in reasonable time. This patch adds a user-space API to indicate the wireless driver that a critical protocol is about to commence and when it is done, using nl80211 primitives NL80211_CMD_CRIT_PROTOCOL_START and NL80211_CRIT_PROTOCOL_STOP. There can be only on critical protocol session started per registered cfg80211 device. The driver can support this by implementing the cfg80211 callbacks .crit_proto_start() and .crit_proto_stop(). Examples of protocols that can benefit from this are DHCP, EAPOL, APIPA. Exactly how the link can/should be made more reliable is up to the driver. Things to consider are avoid scanning, no multi-channel operations, and alter coexistence schemes. Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com> Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com> Signed-off-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless/trace.h')
-rw-r--r--net/wireless/trace.h35
1 files changed, 35 insertions, 0 deletions
diff --git a/net/wireless/trace.h b/net/wireless/trace.h
index 3c2033b8f596..ecd4fcec3c94 100644
--- a/net/wireless/trace.h
+++ b/net/wireless/trace.h
@@ -1806,6 +1806,41 @@ TRACE_EVENT(rdev_update_ft_ies,
WIPHY_PR_ARG, NETDEV_PR_ARG, __entry->md)
);
+TRACE_EVENT(rdev_crit_proto_start,
+ TP_PROTO(struct wiphy *wiphy, struct wireless_dev *wdev,
+ enum nl80211_crit_proto_id protocol, u16 duration),
+ TP_ARGS(wiphy, wdev, protocol, duration),
+ TP_STRUCT__entry(
+ WIPHY_ENTRY
+ WDEV_ENTRY
+ __field(u16, proto)
+ __field(u16, duration)
+ ),
+ TP_fast_assign(
+ WIPHY_ASSIGN;
+ WDEV_ASSIGN;
+ __entry->proto = protocol;
+ __entry->duration = duration;
+ ),
+ TP_printk(WIPHY_PR_FMT ", " WDEV_PR_FMT ", proto=%x, duration=%u",
+ WIPHY_PR_ARG, WDEV_PR_ARG, __entry->proto, __entry->duration)
+);
+
+TRACE_EVENT(rdev_crit_proto_stop,
+ TP_PROTO(struct wiphy *wiphy, struct wireless_dev *wdev),
+ TP_ARGS(wiphy, wdev),
+ TP_STRUCT__entry(
+ WIPHY_ENTRY
+ WDEV_ENTRY
+ ),
+ TP_fast_assign(
+ WIPHY_ASSIGN;
+ WDEV_ASSIGN;
+ ),
+ TP_printk(WIPHY_PR_FMT ", " WDEV_PR_FMT,
+ WIPHY_PR_ARG, WDEV_PR_ARG)
+);
+
/*************************************************************
* cfg80211 exported functions traces *
*************************************************************/