Provide a function the driver can call to report a match. This will send the event to the user space.
Signed-off-by: Andrei Otcheretianski <[email protected]> Signed-off-by: Emmanuel Grumbach <[email protected]> --- include/net/cfg80211.h | 37 ++++++++++++++++++++++++++ include/uapi/linux/nl80211.h | 38 +++++++++++++++++++++++++++ net/wireless/nl80211.c | 62 ++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 137 insertions(+) diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 776827d..11d8aaf 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -5457,6 +5457,43 @@ wiphy_ext_feature_isset(struct wiphy *wiphy, return (ft_byte & BIT(ftidx % 8)) != 0; } +/** + * struct cfg80211_nan_match_params - NAN match parameters + * @type: the type of the function that triggered a match. If it is + * %NL80211_NAN_FUNC_SUBSCRIBE it means that we replied to a subscriber. + * If it is %NL80211_NAN_FUNC_PUBLISH, it means that we got a discovery + * result. + * If it is %NL80211_NAN_FUNC_FOLLOW_UP, we received a follow up. + * @inst_id: the local instance id + * @peer_inst_id: the instance id of the peer's function + * @addr: the MAC address of the peer + * @info_len: the length of the &info + * @info: the Service Specific Info from the peer (if any) + * @cookie: user defined cookie of the corresponding function + */ +struct cfg80211_nan_match_params { + enum nl80211_nan_function_type type; + u8 inst_id; + u8 peer_inst_id; + const u8 *addr; + u8 info_len; + const u8 *info; + u64 cookie; +}; + +/** + * cfg80211_nan_match - report a match for a NAN function. + * @wdev: the wireless device reporting the match + * @match: match notification parameters + * @gfp: allocation flags + * + * This function reports that the a NAN function had a match. This + * can be a subscribe that had a match or a solicited publish that + * was sent. It can also be a follow up that was received. + */ +void cfg80211_nan_match(struct wireless_dev *wdev, + struct cfg80211_nan_match_params *match, 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 837185e..d25c85a 100644 --- a/include/uapi/linux/nl80211.h +++ b/include/uapi/linux/nl80211.h @@ -48,6 +48,7 @@ #define NL80211_MULTICAST_GROUP_REG "regulatory" #define NL80211_MULTICAST_GROUP_MLME "mlme" #define NL80211_MULTICAST_GROUP_VENDOR "vendor" +#define NL80211_MULTICAST_GROUP_NAN "nan" #define NL80211_MULTICAST_GROUP_TESTMODE "testmode" /** @@ -854,6 +855,9 @@ * must be operational (%NL80211_CMD_START_NAN was executed). * It must contain at least one of the following attributes: * %NL80211_ATTR_NAN_MASTER_PREF, %NL80211_ATTR_NAN_DUAL. + * @NL80211_CMD_NAN_FUNC_MATCH: Notification sent when a match is reported. + * This will contain a %NL80211_ATTR_NAN_MATCH nested attribute and + * %NL80211_ATTR_COOKIE. * * @NL80211_CMD_MAX: highest used command number * @__NL80211_CMD_AFTER_LAST: internal use @@ -1048,6 +1052,7 @@ enum nl80211_commands { NL80211_CMD_ADD_NAN_FUNCTION, NL80211_CMD_RM_NAN_FUNCTION, NL80211_CMD_CHANGE_NAN_CONFIG, + NL80211_CMD_NAN_MATCH, /* add new commands above here */ @@ -1846,6 +1851,8 @@ enum nl80211_commands { * attribute. * @NL80211_ATTR_NAN_FUNC_INST_ID: the instance id of a %NL80211_ATTR_NAN_FUNC. * 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. * * @NUM_NL80211_ATTR: total number of nl80211_attrs available * @NL80211_ATTR_MAX: highest attribute number currently defined @@ -2227,6 +2234,7 @@ enum nl80211_attrs { NL80211_ATTR_NAN_DUAL, NL80211_ATTR_NAN_FUNC, NL80211_ATTR_NAN_FUNC_INST_ID, + NL80211_ATTR_NAN_MATCH, /* add attributes here, update the policy in nl80211.c */ @@ -4868,4 +4876,34 @@ enum nl80211_nan_srf_attributes { NL80211_NAN_SRF_ATTR_MAX = NUM_NL80211_NAN_SRF_ATTR - 1, }; +/** + * enum nl80211_nan_match_attributes - NAN match attributes + * @__NL80211_NAN_MATCH_INVALID: invalid + * @NL80211_NAN_MATCH_FUNC_TYPE: &enum nl80211_nan_function_type (u8). This is + * the type of the function which had a match. + * @NL80211_NAN_MATCH_INSTANCE_ID: The instance ID of the local function that + * had a match. This is a u8. + * @NL80211_NAN_MATCH_PEER_INSTANCE_ID: The instance ID of the peer's function + * that caused the match. This is a u8. + * @NL80211_NAN_MATCH_MAC: The MAC address of the peer. This attribute is + * binary. + * @NL80211_NAN_MATCH_SERVICE_INFO: array of bytes describing the peer's + * service specific info. This is a binary attribute. + * + * @NUM_NL80211_NAN_MATCH_ATTR: internal + * @NL80211_NAN_MATCH_ATTR_MAX: highest NAN match attribute + */ +enum nl80211_nan_match_attributes { + __NL80211_NAN_MATCH_INVALID, + NL80211_NAN_MATCH_FUNC_TYPE, + NL80211_NAN_MATCH_INSTANCE_ID, + NL80211_NAN_MATCH_PEER_INSTANCE_ID, + NL80211_NAN_MATCH_MAC, + NL80211_NAN_MATCH_SERVICE_INFO, + + /* keep last */ + NUM_NL80211_NAN_MATCH_ATTR, + NL80211_NAN_MATCH_ATTR_MAX = NUM_NL80211_NAN_MATCH_ATTR - 1 +}; + #endif /* __LINUX_NL80211_H */ diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 3c4d374..6015c58 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -56,6 +56,7 @@ enum nl80211_multicast_groups { NL80211_MCGRP_REGULATORY, NL80211_MCGRP_MLME, NL80211_MCGRP_VENDOR, + NL80211_MCGRP_NAN, NL80211_MCGRP_TESTMODE /* keep last - ifdef! */ }; @@ -65,6 +66,7 @@ static const struct genl_multicast_group nl80211_mcgrps[] = { [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG }, [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME }, [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR }, + [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN }, #ifdef CONFIG_NL80211_TESTMODE [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE } #endif @@ -10412,6 +10414,66 @@ static int nl80211_nan_change_config(struct sk_buff *skb, return rdev_nan_change_conf(rdev, wdev, &conf, changed); } +void cfg80211_nan_match(struct wireless_dev *wdev, + struct cfg80211_nan_match_params *match, gfp_t gfp) +{ + struct wiphy *wiphy = wdev->wiphy; + struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); + struct nlattr *match_attr; + struct sk_buff *msg; + void *hdr; + + if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr)) + return; + + msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); + if (!msg) + return; + + hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH); + 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_u64(msg, NL80211_ATTR_COOKIE, match->cookie)) + goto nla_put_failure; + + match_attr = nla_nest_start(msg, NL80211_ATTR_NAN_MATCH); + if (!match_attr) + goto nla_put_failure; + + if (nla_put_u8(msg, NL80211_NAN_MATCH_FUNC_TYPE, match->type) || + nla_put_u8(msg, NL80211_NAN_MATCH_INSTANCE_ID, match->inst_id) || + nla_put_u8(msg, NL80211_NAN_MATCH_PEER_INSTANCE_ID, + match->peer_inst_id) || + nla_put(msg, NL80211_NAN_MATCH_MAC, ETH_ALEN, match->addr)) + goto nla_put_failure; + + if (match->info && match->info_len && + nla_put(msg, NL80211_NAN_MATCH_SERVICE_INFO, match->info_len, + match->info)) + goto nla_put_failure; + + nla_nest_end(msg, match_attr); + 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_match); + static int nl80211_get_protocol_features(struct sk_buff *skb, struct genl_info *info) { -- 2.5.0 -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
