Return-path: Received: from latitanza.investici.org ([82.94.249.234]:33163 "EHLO latitanza.investici.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964824Ab2JZP6S (ORCPT ); Fri, 26 Oct 2012 11:58:18 -0400 From: Antonio Quartulli To: Johannes Berg Cc: "John W. Linville" , linux-wireless@vger.kernel.org, Antonio Quartulli Subject: [PATCHv3 1/2] nl/cfg80211: add the NL80211_CMD_SET_MCAST_RATE command Date: Fri, 26 Oct 2012 17:57:34 +0200 Message-Id: <1351267055-21927-1-git-send-email-ordex@autistici.org> (sfid-20121026_175822_775245_4E2E6FF2) Sender: linux-wireless-owner@vger.kernel.org List-ID: This command triggers a new callback: set_mcast_rate(). It enables the user to change the rate used to send multicast frames for vif configured as IBSS or MESH_POINT Signed-off-by: Antonio Quartulli --- v2: - added check for !set_mcast_rate in nl80211_set_mcast_rate() - moved all the changes for cfg80211 in 1/2. 2/2 now contains mac80211 changes only v3: - rebased on last mac80211-next - fixed destination param in memcpy in ieee80211_mcast_rate() include/net/cfg80211.h | 6 ++++++ include/uapi/linux/nl80211.h | 5 +++++ net/wireless/nl80211.c | 38 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 49 insertions(+) diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index aa0e4a1..63c9ba2 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -1544,6 +1544,9 @@ struct cfg80211_gtk_rekey_data { * to a merge. * @leave_ibss: Leave the IBSS. * + * @set_mcast_rate: Set the specified multicast rate (only if vif is in ADHOC or + * MESH mode) + * * @set_wiphy_params: Notify that wiphy parameters have changed; * @changed bitfield (see &enum wiphy_params_flags) describes which values * have changed. The actual parameter values are available in @@ -1745,6 +1748,9 @@ struct cfg80211_ops { struct cfg80211_ibss_params *params); int (*leave_ibss)(struct wiphy *wiphy, struct net_device *dev); + int (*set_mcast_rate)(struct wiphy *wiphy, struct net_device *dev, + int rate[IEEE80211_NUM_BANDS]); + int (*set_wiphy_params)(struct wiphy *wiphy, u32 changed); int (*set_tx_power)(struct wiphy *wiphy, diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h index 617d0fb..654ff1e 100644 --- a/include/uapi/linux/nl80211.h +++ b/include/uapi/linux/nl80211.h @@ -578,6 +578,9 @@ * station, due to particular reason. %NL80211_ATTR_CONN_FAILED_REASON * is used for this. * + * @NL80211_CMD_SET_MCAST_RATE: Change the rate used to send multicast frames + * for IBSS or MESH vif. + * * @NL80211_CMD_MAX: highest used command number * @__NL80211_CMD_AFTER_LAST: internal use */ @@ -726,6 +729,8 @@ enum nl80211_commands { NL80211_CMD_CONN_FAILED, + NL80211_CMD_SET_MCAST_RATE, + /* add new commands above here */ /* used to define NL80211_CMD_MAX below */ diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 8c08578..4c774a9 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -5444,6 +5444,36 @@ static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info) return cfg80211_leave_ibss(rdev, dev, false); } +static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info) +{ + struct cfg80211_registered_device *rdev = info->user_ptr[0]; + struct net_device *dev = info->user_ptr[1]; + int mcast_rate[IEEE80211_NUM_BANDS]; + u32 nla_rate; + int err; + + if (!rdev->ops->set_mcast_rate) + return -EOPNOTSUPP; + + memset(mcast_rate, 0, sizeof(mcast_rate)); + + if (!info->attrs[NL80211_ATTR_MCAST_RATE]) + return -EINVAL; + + nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]); + if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate)) + return -EINVAL; + + wdev_lock(dev->ieee80211_ptr); + + err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate); + + wdev_unlock(dev->ieee80211_ptr); + + return err; +} + + #ifdef CONFIG_NL80211_TESTMODE static struct genl_multicast_group nl80211_testmode_mcgrp = { .name = "testmode", @@ -7625,6 +7655,14 @@ static struct genl_ops nl80211_ops[] = { .internal_flags = NL80211_FLAG_NEED_WDEV_UP | NL80211_FLAG_NEED_RTNL, }, + { + .cmd = NL80211_CMD_SET_MCAST_RATE, + .doit = nl80211_set_mcast_rate, + .policy = nl80211_policy, + .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, + }, }; static struct genl_multicast_group nl80211_mlme_mcgrp = { -- 1.7.12.4