Adding Johill and Michael as they are maintainers of mac80211 and they
need to review this. Please add them on further mac80211 patches.
Note to driver authors: zd1211rw, rt2x00 drivers and adm8211 will need
to set mactime if they want IBSS merge to work as this functionality
would be added with this. I believe all other drivers set it, but
didn't do a thorough grep.
On Jan 18, 2008 7:52 AM, Bruno Randolf <[EMAIL PROTECTED]> wrote:
> +
> + /* check if we need to merge IBSS */
> + if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && beacon &&
> + !local->sta_sw_scanning && !local->sta_hw_scanning &&
> + mgmt->u.beacon.capab_info & WLAN_CAPABILITY_IBSS &&
> + memcmp(elems.ssid, sdata->u.sta.ssid, sdata->u.sta.ssid_len) ==
> 0) {
> +#ifdef CONFIG_MAC80211_IBSS_DEBUG
> + static unsigned long last_tsf_debug;
> +#endif
> + if (rx_status->flag & RX_FLAG_TSFT)
> + mactime = rx_status->mactime;
> + else {
> + mactime = -1LLU;
> + printk(KERN_WARNING "%s: IBSS mode needs mactime for "
> + "beacons\n", dev->name);
Does this merit a WARN_ON() ? This essentially will prevent IBSS
merges for drivers that haven't set mactime yet.
> diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
> index 6cc1e7e..5617e17 100644
> --- a/net/mac80211/rx.c
> +++ b/net/mac80211/rx.c
> @@ -1609,7 +1609,10 @@ static int prepare_for_handlers(struct
> ieee80211_sub_if_data *sdata,
> case IEEE80211_IF_TYPE_IBSS:
> if (!bssid)
> return 0;
> - if (!ieee80211_bssid_match(bssid, sdata->u.sta.bssid)) {
> + if ((rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT &&
> + (rx->fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_BEACON)
Since we are letting all beacons through how about adding a check for
ssid on ieee80211_rx_bss_info()?
(memcmp(elems.ssid, sdata->u.sta.ssid, sdata->u.sta.ssid_len) == 0)
Just not sure exactly we'd check for it yet.
> + return 1;
> + else if (!ieee80211_bssid_match(bssid, sdata->u.sta.bssid)) {
> if (!(rx->flags & IEEE80211_TXRXD_RXIN_SCAN))
> return 0;
> rx->flags &= ~IEEE80211_TXRXD_RXRA_MATCH;
>
>
Luis
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