On Mon, 26 Mar 2007 04:38:25 -0700 mohamed wrote:
> Add basic support for IEEE 802.11n discovery and association.
>
> This patch adds support to discover IEEE 802.11n AP and enable
> association to 802.11n Network. It parses beacon to discover 802.11n
> IE and include HT capability information element in Association Request
> Frame.
> It also call low level driver with the HT capability available during
> association.
>
> Signed-off-by: Mohamed Abbas <mabbas@xxxxxxxxxxxxxxx>
>
> diff -Nupr wireless-dev/include/net/mac80211.h
> wireless-dev-new/include/net/mac80211.h
> --- wireless-dev/include/net/mac80211.h 2007-03-27 00:36:28.000000000
> -0700
> +++ wireless-dev-new/include/net/mac80211.h 2007-03-27
> 00:59:40.000000000 -0700
I'm seeing an email/patch problem here. The lines above should be
3 lines only, not 6 that I'm seeing. Maybe it's my mail client,
but it usually works for me, so possibly yours is splitting lines
when it should not.
> @@ -526,6 +526,9 @@ struct ieee80211_hw {
> * per-packet RC4 key with each TX frame when doing hwcrypto */
> #define IEEE80211_HW_TKIP_REQ_PHASE2_KEY (1<<14)
>
> + /* The device capable of supporting 11n */
> +#define IEEE80211_HW_SUPPORT_HT_MODE (1<<15)
> +
> u32 flags; /* hardware flags defined above */
>
> /* Set to the size of a needed device specific skb headroom for TX
> skbs. */
> @@ -720,6 +723,17 @@ struct ieee80211_ops {
> /* Get the current TSF timer value from firmware/hardware. Currently,
> * this is only used for IBSS mode debugging and, as such, is not a
> * required function. */
> +
> + /* Configure ht parameters
Line above ends with space. :(
What is "ht"?
> + */
> + int (*conf_ht)(struct ieee80211_hw *hw,
> + struct ieee80211_ht_capability *ht_cap_param,
> + struct ieee80211_ht_additional_info *ht_extra_param);
> +
> + /* Get ht capabilities from the device */
> + int (*get_ht_capab)(struct ieee80211_hw *hw,
> + struct ieee80211_ht_capability *ht_cap_param);
> +
> u64 (*get_tsf)(struct ieee80211_hw *hw);
>
> /* Reset the TSF timer and allow firmware/hardware to synchronize with
> 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
> 00:36:28.000000000 -0700
> +++ wireless-dev-new/net/mac80211/ieee80211_sta.c 2007-03-27
> 01:26:06.000000000 -0700
> @@ -230,7 +242,55 @@ static int ecw2cw(int ecw)
> return cw - 1;
> }
>
> +/* call low level driver with 11n params as it was recieved
received
> + from the AP
> +*/
Line above ends with spaces.
Kernel long comment style is:
/*
* call low-level driver with 11n params as they were received
* from the AP
*/
> +static void ieee80211_sta_ht_params(struct net_device *dev,
> + struct sta_info *sta,
> + struct ieee80211_ht_additional_info *ht_extra_param,
> + struct ieee80211_ht_capability *ht_cap_param)
> +{
> + int rc;
> + struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
> +
> + if (local->ops->conf_ht) {
> + rc = local->ops->conf_ht(local_to_hw(local), ht_cap_param,
> + ht_extra_param);
> +
> + if (rc)
> + sta->flags &= ~WLAN_STA_HT;
> + } else
> + sta->flags &= ~WLAN_STA_HT;
> +
> + return;
> +}
> +
> +/* Get 11n capabilties from low level driver */
> +static void ieee80211_fill_ht_ie(struct net_device *dev,
> + struct ieee80211_ht_capability *ht_capab)
> +{
> + int rc;
> + struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
> +
> + if (!local->ops->get_ht_capab){
> + memset(ht_capab, 0, sizeof(struct ieee80211_ht_capability));
> + return;
> + }
> +
> + rc = local->ops->get_ht_capab(local_to_hw(local), ht_capab);
> + if (!rc) {
> + memset(ht_capab, 0, sizeof(struct ieee80211_ht_capability));
> + return;
> + }
>
> + ht_capab->capabilitiesInfo = (__le16) cpu_to_le16(
> + ht_capab->capabilitiesInfo);
> + ht_capab->extended_ht_capability_info = (__le16) cpu_to_le16(
> + ht_capab->extended_ht_capability_info);
> + ht_capab->tx_BF_capability_info = (__le32) cpu_to_le32(
> + ht_capab->tx_BF_capability_info);
> +}
> +
> static void ieee80211_sta_wmm_params(struct net_device *dev,
> struct ieee80211_if_sta *ifsta,
> u8 *wmm_param, size_t wmm_param_len)
> @@ -584,6 +648,15 @@ static void ieee80211_send_assoc(struct
> *pos++ = 0;
> }
>
> + /* if low level driver support 11n fill in 11n IE */
supports 11n,
> + if (ht_enabled && ifsta->ht_enabled && local->ops->get_ht_capab) {
> + pos = skb_put(skb, sizeof(struct ieee80211_ht_capability)+2);
> + *pos++ = WLAN_EID_HT_CAPABILITY;
> + *pos++ = sizeof(struct ieee80211_ht_capability);
> + ieee80211_fill_ht_ie(dev,
> + (struct ieee80211_ht_capability *)pos);
> + }
> +
> kfree(ifsta->assocreq_ies);
> ifsta->assocreq_ies_len = (skb->data + skb->len) - ies;
> ifsta->assocreq_ies = kmalloc(ifsta->assocreq_ies_len, GFP_ATOMIC);
---
~Randy
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