On Mon, 26 Mar 2007 04:43:45 -0700 mohamed wrote:
> add draft IEEE 802.11n management action frame handling
>
> Several Action frame format are defined to support IEEE 802.11n
> features.
> This patch adds support to parse Block Ack action frame, then call
> low level driver with the frame's body.
>
> Signed-off-by: Mohamed Abbas <mabbas@xxxxxxxxxxxxxxx>
>
> diff -Nupr wireless-dev/net/mac80211/ieee80211_sta.c
> wireless-dev-new/net/mac80211/ieee80211_sta.c
> --- wireless-dev/net/mac80211/ieee80211_sta.c 2007-03-27
> 01:34:54.000000000 -0700
> +++ wireless-dev-new/net/mac80211/ieee80211_sta.c 2007-03-27
> 02:02:58.000000000 -0700
> @@ -1818,6 +1818,92 @@ static void ieee80211_rx_mgmt_probe_req(
> ieee80211_sta_tx(dev, skb, 0);
> }
>
> +static void ieee80211_send_addba_resp(struct net_device *dev,
> + struct ieee80211_mgmt *mgmt_src,
> + size_t len,
> + u16 status)
> +{
> + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
> + struct ieee80211_if_sta *ifsta = &sdata->u.sta;
Use tab above for indent.
> + struct sk_buff *skb;
> + struct ieee80211_mgmt *mgmt;
> +
> + skb = dev_alloc_skb(sizeof(*mgmt) + 50 );
No space between 50 and ')'.
> + if (!skb) {
> + printk(KERN_DEBUG "%s: failed to allocate buffer "
> + "for addts frame\n", dev->name);
> + return;
> + }
> +
> + mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
> + memset(mgmt, 0, 24);
> + memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
> + memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
> + memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
> + mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
> + IEEE80211_STYPE_ACTION);
> +
> + skb_put(skb, 1 + sizeof(mgmt->u.action.u.addba_resp));
> + mgmt->u.action.category = WLAN_CATEGORY_BACK;
> + mgmt->u.action.u.addba_resp.action_code = WLAN_ACTION_ADDBA_RESP;
> + mgmt->u.action.u.addba_resp.dialog_token =
> + mgmt_src->u.action.u.addba_req.dialog_token;
> + mgmt->u.action.u.addba_resp.capab =
> + mgmt_src->u.action.u.addba_req.capab;
> + mgmt->u.action.u.addba_resp.timeout =
> + mgmt_src->u.action.u.addba_req.timeout;
> + mgmt->u.action.u.addba_resp.status = cpu_to_le16(status);
> +
> + ieee80211_sta_tx(dev, skb, 0);
> +
> + return;
> +}
> +static void ieee80211_rx_mgmt_action(struct net_device *dev,
> + struct ieee80211_if_sta *ifsta,
> + struct ieee80211_mgmt *mgmt,
> + size_t len)
> +{
> + struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
> +
> + if (len < 24 + 1) {
> + printk(KERN_DEBUG "%s: too short (%zd) action frame "
> + "received from " MAC_FMT " - ignored\n",
> + dev->name, len, MAC_ARG(mgmt->sa));
> + return;
> + }
> +
> + switch (mgmt->u.action.category) {
> + case WLAN_CATEGORY_BACK:
> + switch (mgmt->u.action.u.addba_req.action_code) {
> + case WLAN_ACTION_ADDBA_REQ:
> + if (!local->ops->handle_ba_action ||
> + (local->ops->handle_ba_action(local_to_hw(local),
> + mgmt)))
> + ieee80211_send_addba_resp(dev, mgmt, len,
> + WLAN_STATUS_REQUEST_DECLINED);
> + else
> + ieee80211_send_addba_resp(dev, mgmt, len,
> + WLAN_STATUS_SUCCESS);
> + break;
> + case WLAN_ACTION_ADDBA_RESP:
> + case WLAN_ACTION_DELBA:
> + if (local->ops->handle_ba_action)
> + local->ops->handle_ba_action(
> + local_to_hw(local), mgmt);
> + break;
> + default:
> + printk(KERN_ERR "%s: recieved back unsupported \n",
received
and maybe s/back/BACK/ ?
I think that "back" there will be meaningless
to lots of people.
> + dev->name);
> + break;
> + }
> + break;
> +
> + default:
> + printk(KERN_ERR "%s: unsupported action category %d\n",
> + dev->name, mgmt->u.action.category);
> + break;
> + }
> +}
>
> void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb,
> struct ieee80211_rx_status *rx_status)
---
~Randy
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