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Tue, 13 Mar 2018 15:00:03 -0700 (PDT) From: Denis Kenzior To: linux-wireless@vger.kernel.org Cc: Denis Kenzior Subject: [RFC v5 8/9] mac80211: Add support for tx_control_port Date: Tue, 13 Mar 2018 16:59:41 -0500 Message-Id: <20180313215942.29176-9-denkenz@gmail.com> X-Mailer: git-send-email 2.13.5 In-Reply-To: <20180313215942.29176-1-denkenz@gmail.com> References: <20180313215942.29176-1-denkenz@gmail.com> Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Signed-off-by: Denis Kenzior --- net/mac80211/cfg.c | 1 + net/mac80211/ieee80211_i.h | 3 +++ net/mac80211/tx.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 50 insertions(+) diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index fd68f6fb02d7..9294acb495ee 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -3786,4 +3786,5 @@ const struct cfg80211_ops mac80211_config_ops = { .add_nan_func = ieee80211_add_nan_func, .del_nan_func = ieee80211_del_nan_func, .set_multicast_to_unicast = ieee80211_set_multicast_to_unicast, + .tx_control_port = ieee80211_tx_control_port, }; diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index ae9c33cd8ada..a52bd2a61a27 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -1734,6 +1734,9 @@ void ieee80211_check_fast_xmit(struct sta_info *sta); void ieee80211_check_fast_xmit_all(struct ieee80211_local *local); void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata); void ieee80211_clear_fast_xmit(struct sta_info *sta); +int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev, + const u8 *buf, size_t len, + const u8 *dest, __be16 proto, bool unencrypted); /* HT */ void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 7643178ef132..6ae8fe121500 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -4749,3 +4749,49 @@ void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, ieee80211_xmit(sdata, NULL, skb); local_bh_enable(); } + +int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev, + const u8 *buf, size_t len, + const u8 *dest, __be16 proto, bool unencrypted) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_local *local = sdata->local; + struct sk_buff *skb; + struct ethhdr *ehdr; + u32 flags; + + /* Only accept CONTROL_PORT_PROTOCOL configured in CONNECT/ASSOCIATE + * or Pre-Authentication + */ + if (proto != sdata->control_port_protocol && + proto != cpu_to_be16(ETH_P_PREAUTH)) + return -EINVAL; + + if (unencrypted) + flags = IEEE80211_TX_INTFL_DONT_ENCRYPT; + else + flags = 0; + + skb = dev_alloc_skb(local->hw.extra_tx_headroom + + sizeof(struct ethhdr) + len); + if (!skb) + return -ENOMEM; + + skb_reserve(skb, local->hw.extra_tx_headroom + sizeof(struct ethhdr)); + + skb_put_data(skb, buf, len); + + ehdr = skb_push(skb, sizeof(struct ethhdr)); + memcpy(ehdr->h_dest, dest, ETH_ALEN); + memcpy(ehdr->h_source, sdata->vif.addr, ETH_ALEN); + ehdr->h_proto = proto; + + skb->dev = dev; + skb->protocol = htons(ETH_P_802_3); + skb_reset_network_header(skb); + skb_reset_mac_header(skb); + + __ieee80211_subif_start_xmit(skb, skb->dev, flags); + + return 0; +}