From 96b08fd6080efdfa8f6125cffc6742a2235d92f1 Mon Sep 17 00:00:00 2001 From: Arend Van Spriel Date: Thu, 13 Apr 2017 13:06:27 +0100 Subject: [PATCH] nl80211: add request id in scheduled scan event messages For multi-scheduled scan support in subsequent patch a request id will be added. This patch add this request id to the scheduled scan event messages. For now the request id will always be zero. With multi-scheduled scan its value will inform user-space to which scan the event relates. Reviewed-by: Hante Meuleman Reviewed-by: Pieter-Paul Giesberts Reviewed-by: Franky Lin Signed-off-by: Arend van Spriel Signed-off-by: Johannes Berg --- include/net/cfg80211.h | 2 ++ net/wireless/nl80211.c | 23 +++++++++++------------ net/wireless/nl80211.h | 3 +-- net/wireless/scan.c | 5 ++--- 4 files changed, 16 insertions(+), 17 deletions(-) diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 89fa499..2a200b9 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -1649,6 +1649,7 @@ struct cfg80211_bss_select_adjust { /** * struct cfg80211_sched_scan_request - scheduled scan request description * + * @reqid: identifies this request. * @ssids: SSIDs to scan for (passed in the probe_reqs in active scans) * @n_ssids: number of SSIDs * @n_channels: total number of channels to scan @@ -1693,6 +1694,7 @@ struct cfg80211_bss_select_adjust { * comparisions. */ struct cfg80211_sched_scan_request { + u64 reqid; struct cfg80211_ssid *ssids; int n_ssids; u32 n_channels; diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 671b635..a047992 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -7371,8 +7371,7 @@ static int nl80211_start_sched_scan(struct sk_buff *skb, rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req); - nl80211_send_sched_scan(rdev, dev, - NL80211_CMD_START_SCHED_SCAN); + nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN); return 0; out_free: @@ -13219,18 +13218,19 @@ static int nl80211_prep_scan_msg(struct sk_buff *msg, static int nl80211_prep_sched_scan_msg(struct sk_buff *msg, - struct cfg80211_registered_device *rdev, - struct net_device *netdev, - u32 portid, u32 seq, int flags, u32 cmd) + struct cfg80211_sched_scan_request *req, u32 cmd) { void *hdr; - hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); + hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); if (!hdr) return -1; - if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || - nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) + if (nla_put_u32(msg, NL80211_ATTR_WIPHY, + wiphy_to_rdev(req->wiphy)->wiphy_idx) || + nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) || + nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid, + NL80211_ATTR_PAD)) goto nla_put_failure; genlmsg_end(msg, hdr); @@ -13290,8 +13290,7 @@ void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev, NL80211_MCGRP_SCAN, GFP_KERNEL); } -void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev, - struct net_device *netdev, u32 cmd) +void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd) { struct sk_buff *msg; @@ -13299,12 +13298,12 @@ void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev, if (!msg) return; - if (nl80211_prep_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) { + if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) { nlmsg_free(msg); return; } - genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, + genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0, NL80211_MCGRP_SCAN, GFP_KERNEL); } diff --git a/net/wireless/nl80211.h b/net/wireless/nl80211.h index 3cb17cd..d5f6860 100644 --- a/net/wireless/nl80211.h +++ b/net/wireless/nl80211.h @@ -16,8 +16,7 @@ struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev, struct wireless_dev *wdev, bool aborted); void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev, struct sk_buff *msg); -void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev, - struct net_device *netdev, u32 cmd); +void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd); void nl80211_common_reg_change_event(enum nl80211_commands cmd_id, struct regulatory_request *request); diff --git a/net/wireless/scan.c b/net/wireless/scan.c index 21be56b..6f4996c 100644 --- a/net/wireless/scan.c +++ b/net/wireless/scan.c @@ -321,8 +321,7 @@ void __cfg80211_sched_scan_results(struct work_struct *wk) spin_unlock_bh(&rdev->bss_lock); request->scan_start = jiffies; } - nl80211_send_sched_scan(rdev, request->dev, - NL80211_CMD_SCHED_SCAN_RESULTS); + nl80211_send_sched_scan(request, NL80211_CMD_SCHED_SCAN_RESULTS); } rtnl_unlock(); @@ -379,7 +378,7 @@ int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev, return err; } - nl80211_send_sched_scan(rdev, dev, NL80211_CMD_SCHED_SCAN_STOPPED); + nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_SCHED_SCAN_STOPPED); RCU_INIT_POINTER(rdev->sched_scan_req, NULL); kfree_rcu(sched_scan_req, rcu_head); -- 2.7.4