Thought the underline driver MLME can handle association temporal rejection with comeback, it is still useful to notify this to user space, as user space might want to handle the temporal rejection differently. For example, in case the comeback time is too long, user space can deauthenticate immediately and try to associate with a different AP.
Unified · Split
| @@ -8287,6 +8287,18 @@ bool cfg80211_iftype_allowed(struct wiphy *wiphy, enum nl80211_iftype iftype, · 8286 unmodified lines | ||
| 8287 | 8287 | bool is_4addr, u8 check_swif); |
| 8288 | 8288 | |
| 8289 | 8289 | |
| 8290 | +/** | |
| 8291 | + * cfg80211_assoc_comeback - notification of association that was | |
| 8292 | + * temporarly rejected with a comeback | |
| 8293 | + * @netdev: network device | |
| 8294 | + * @bss: the bss entry with which association is in progress. | |
| 8295 | + * @timeout: timeout interval value TUs. | |
| 8296 | + * | |
| 8297 | + * this function may sleep. the caller must hold the corresponding wdev's mutex. | |
| 8298 | + */ | |
| 8299 | +void cfg80211_assoc_comeback(struct net_device *netdev, | |
| 8300 | + struct cfg80211_bss *bss, u32 timeout); | |
| 8301 | + | |
| 8290 | 8302 | /* Logging, debugging and troubleshooting/diagnostic helpers. */ |
| 8291 | 8303 | |
| 8292 | 8304 | /* wiphy_printk helpers, similar to dev_printk */ |
| @@ -1232,6 +1232,11 @@ · 1231 unmodified lines | ||
| 1232 | 1232 | * &NL80211_ATTR_FILS_NONCES - for FILS Nonces |
| 1233 | 1233 | * (STA Nonce 16 bytes followed by AP Nonce 16 bytes) |
| 1234 | 1234 | * |
| 1235 | + * @NL80211_CMD_ASSOC_COMEBACK: notification about an association | |
| 1236 | + * temporal rejection with comeback. The event includes %NL80211_ATTR_MAC | |
| 1237 | + * to describe the BSSID address of the AP and %NL80211_ATTR_TIMEOUT to | |
| 1238 | + * specify the timeout value. | |
| 1239 | + * | |
| 1235 | 1240 | * @NL80211_CMD_MAX: highest used command number |
| 1236 | 1241 | * @__NL80211_CMD_AFTER_LAST: internal use |
| 1237 | 1242 | */ |
| @@ -1474,6 +1479,8 @@ enum nl80211_commands { · 236 unmodified lines | ||
| 1474 | 1479 | |
| 1475 | 1480 | NL80211_CMD_SET_FILS_AAD, |
| 1476 | 1481 | |
| 1482 | + NL80211_CMD_ASSOC_COMEBACK, | |
| 1483 | + | |
| 1477 | 1484 | /* add new commands above here */ |
| 1478 | 1485 | |
| 1479 | 1486 | /* used to define NL80211_CMD_MAX below */ |
| @@ -17064,6 +17064,44 @@ static void nl80211_send_remain_on_chan_event( · 17063 unmodified lines | ||
| 17064 | 17064 | nlmsg_free(msg); |
| 17065 | 17065 | } |
| 17066 | 17066 | |
| 17067 | +void cfg80211_assoc_comeback(struct net_device *netdev, | |
| 17068 | + struct cfg80211_bss *bss, u32 timeout) | |
| 17069 | +{ | |
| 17070 | + struct wireless_dev *wdev = netdev->ieee80211_ptr; | |
| 17071 | + struct wiphy *wiphy = wdev->wiphy; | |
| 17072 | + struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); | |
| 17073 | + struct sk_buff *msg; | |
| 17074 | + void *hdr; | |
| 17075 | + | |
| 17076 | + trace_cfg80211_assoc_comeback(wdev, bss->bssid, timeout); | |
| 17077 | + | |
| 17078 | + msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
| 17079 | + if (!msg) | |
| 17080 | + return; | |
| 17081 | + | |
| 17082 | + hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ASSOC_COMEBACK); | |
| 17083 | + if (!hdr) { | |
| 17084 | + nlmsg_free(msg); | |
| 17085 | + return; | |
| 17086 | + } | |
| 17087 | + | |
| 17088 | + if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || | |
| 17089 | + nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || | |
| 17090 | + nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bss->bssid) || | |
| 17091 | + nla_put_u32(msg, NL80211_ATTR_TIMEOUT, timeout)) | |
| 17092 | + goto nla_put_failure; | |
| 17093 | + | |
| 17094 | + genlmsg_end(msg, hdr); | |
| 17095 | + | |
| 17096 | + genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, | |
| 17097 | + NL80211_MCGRP_MLME, GFP_KERNEL); | |
| 17098 | + return; | |
| 17099 | + | |
| 17100 | + nla_put_failure: | |
| 17101 | + nlmsg_free(msg); | |
| 17102 | +} | |
| 17103 | +EXPORT_SYMBOL(cfg80211_assoc_comeback); | |
| 17104 | + | |
| 17067 | 17105 | void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie, |
| 17068 | 17106 | struct ieee80211_channel *chan, |
| 17069 | 17107 | unsigned int duration, gfp_t gfp) |
| @@ -3696,6 +3696,23 @@ TRACE_EVENT(rdev_set_radar_offchan, · 3695 unmodified lines | ||
| 3696 | 3696 | WIPHY_PR_ARG, CHAN_DEF_PR_ARG) |
| 3697 | 3697 | ); |
| 3698 | 3698 | |
| 3699 | +TRACE_EVENT(cfg80211_assoc_comeback, | |
| 3700 | + TP_PROTO(struct wireless_dev *wdev, const u8 *bssid, u32 timeout), | |
| 3701 | + TP_ARGS(wdev, bssid, timeout), | |
| 3702 | + TP_STRUCT__entry( | |
| 3703 | + WDEV_ENTRY | |
| 3704 | + MAC_ENTRY(bssid) | |
| 3705 | + __field(u32, timeout) | |
| 3706 | + ), | |
| 3707 | + TP_fast_assign( | |
| 3708 | + WDEV_ASSIGN; | |
| 3709 | + MAC_ASSIGN(bssid, bssid); | |
| 3710 | + __entry->timeout = timeout; | |
| 3711 | + ), | |
| 3712 | + TP_printk(WDEV_PR_FMT ", " MAC_PR_FMT ", timeout: %u TUs", | |
| 3713 | + WDEV_PR_ARG, MAC_PR_ARG(bssid), __entry->timeout) | |
| 3714 | +); | |
| 3715 | + | |
| 3699 | 3716 | #endif /* !__RDEV_OPS_TRACE || TRACE_HEADER_MULTI_READ */ |
| 3700 | 3717 | |
| 3701 | 3718 | #undef TRACE_INCLUDE_PATH |