Return-path: Received: from mga04.intel.com ([192.55.52.120]:4114 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756151AbcC2JfW (ORCPT ); Tue, 29 Mar 2016 05:35:22 -0400 From: Emmanuel Grumbach To: johannes@sipsolutions.net Cc: linux-wireless@vger.kernel.org, Andrei Otcheretianski , Emmanuel Grumbach Subject: [PATCHv3 RESEND 06/11] cfg80211: Provide an API to report NAN function termination Date: Tue, 29 Mar 2016 12:35:04 +0300 Message-Id: <1459244109-16038-6-git-send-email-emmanuel.grumbach@intel.com> (sfid-20160329_113539_905108_B3DB664F) In-Reply-To: <1459244109-16038-1-git-send-email-emmanuel.grumbach@intel.com> References: <1459244109-16038-1-git-send-email-emmanuel.grumbach@intel.com> Sender: linux-wireless-owner@vger.kernel.org List-ID: From: Andrei Otcheretianski Provide a function that reports NAN DE function termination. The function may be terminated due to one of the following reasons: user request, ttl expiration or failure. Signed-off-by: Andrei Otcheretianski Signed-off-by: Emmanuel Grumbach --- include/net/cfg80211.h | 16 +++++++++++++++ include/uapi/linux/nl80211.h | 18 +++++++++++++++++ net/wireless/nl80211.c | 46 ++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 80 insertions(+) diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 8c200a0..3a94b21 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -5528,6 +5528,22 @@ struct cfg80211_nan_match_params { void cfg80211_nan_match(struct wireless_dev *wdev, struct cfg80211_nan_match_params *match, gfp_t gfp); +/** + * cfg80211_nan_func_terminated - notify about NAN function termination. + * + * @wdev: the wireless device reporting the match + * @inst_id: the local instance id + * @reason: termination reason (one of the NL80211_NAN_FUNC_TERM_REASON_*) + * @cookie: user defined cookie + * @gfp: allocation flags + * + * This function reports that the a NAN function is terminated. + */ +void cfg80211_nan_func_terminated(struct wireless_dev *wdev, + u8 inst_id, + enum nl80211_nan_func_term_reason reason, + u64 cookie, gfp_t gfp); + /* ethtool helper */ void cfg80211_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info); diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h index 40dbbb9..f4a2e46 100644 --- a/include/uapi/linux/nl80211.h +++ b/include/uapi/linux/nl80211.h @@ -1862,6 +1862,8 @@ enum nl80211_commands { * Its type is u8 and it cannot be 0. * @NL80211_ATTR_NAN_MATCH: used to report a match. This is a nested attribute. * See &enum nl80211_nan_match_attributes. + * @NL80211_ATTR_NAN_FUNC_TERM_REASON: NAN function termination reason. + * See &enum nl80211_nan_func_term_reason. * * @NUM_NL80211_ATTR: total number of nl80211_attrs available * @NL80211_ATTR_MAX: highest attribute number currently defined @@ -2246,6 +2248,7 @@ enum nl80211_attrs { NL80211_ATTR_NAN_FUNC, NL80211_ATTR_NAN_FUNC_INST_ID, NL80211_ATTR_NAN_MATCH, + NL80211_ATTR_NAN_FUNC_TERM_REASON, /* add attributes here, update the policy in nl80211.c */ @@ -4838,6 +4841,21 @@ enum nl80211_nan_publish_type { NL80211_NAN_UNSOLICITED_PUBLISH = 1 << 1, }; +/** + * enum nl80211_nan_func_term_reason - NAN functions termination reason + * + * Defines termination reasons of a NAN function + * + * @NL80211_NAN_FUNC_TERM_REASON_USER_REQUEST: requested by user + * @NL80211_NAN_FUNC_TERM_REASON_TTL_EXPIRED: timeout + * @NL80211_NAN_FUNC_TERM_REASON_ERROR: errored + */ +enum nl80211_nan_func_term_reason { + NL80211_NAN_FUNC_TERM_REASON_USER_REQUEST, + NL80211_NAN_FUNC_TERM_REASON_TTL_EXPIRED, + NL80211_NAN_FUNC_TERM_REASON_ERROR, +}; + #define NL80211_NAN_FUNC_SERVICE_ID_LEN 6 #define NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN 0xff #define NL80211_NAN_FUNC_SRF_MAX_LEN 0xff diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 32334df..4872349 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -10591,6 +10591,52 @@ nla_put_failure: } EXPORT_SYMBOL(cfg80211_nan_match); +void cfg80211_nan_func_terminated(struct wireless_dev *wdev, + u8 inst_id, + enum nl80211_nan_func_term_reason reason, + u64 cookie, gfp_t gfp) +{ + struct wiphy *wiphy = wdev->wiphy; + struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); + struct sk_buff *msg; + void *hdr; + + if (WARN_ON(!inst_id)) + return; + + msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); + if (!msg) + return; + + hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RM_NAN_FUNCTION); + if (!hdr) { + nlmsg_free(msg); + return; + } + + if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || + (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, + wdev->netdev->ifindex)) || + nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) + goto nla_put_failure; + + if (nla_put_u8(msg, NL80211_ATTR_NAN_FUNC_INST_ID, inst_id) || + nla_put_u8(msg, NL80211_ATTR_NAN_FUNC_TERM_REASON, reason) || + nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) + goto nla_put_failure; + + genlmsg_end(msg, hdr); + + genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, + NL80211_MCGRP_NAN, gfp); + return; + +nla_put_failure: + genlmsg_cancel(msg, hdr); + nlmsg_free(msg); +} +EXPORT_SYMBOL(cfg80211_nan_func_terminated); + static int nl80211_get_protocol_features(struct sk_buff *skb, struct genl_info *info) { -- 2.5.0