On Thu, Mar 25, 2010 at 2:22 AM, Michael Stahn <m1kes@xxxxxx> wrote:
>> > Maybe we could create a socket option that would put a _socket_ into a
>> > cooked monitor mode? A "monitor mode socket" would accept and transmit
>> > packets with radiotap and 802.11 headers and receive the packets that
>> > the interface already receives, also with radiotap and 802.11 headers.
>> > That interface could be optimized for use with hostapd and other similar
>> > programs. The driver could fill some data from the interface settings.
>> >
>> > The monitor mode, on the other hand, could be optimized for the
>> > "hardcore" stuff when the driver interferes as little as possible. Then
>> > no special flags would be needed to pass the frame as is.
>> >
>> > --
>> > Regards,
>> > Pavel Roskin
>> >
>>
>> I don't think that is needed, as we already support multiple monitor
>> interfaces (including a situation where some are cooked, others are
>> raw).
>>
>
> well after all.. for everyone who's interested I made a quick fix
> considering the duration-problem. Perhaps on 2.6.34 there'll be
> a stable/standardised solution for all those tx-packet-manipulation-stuff.
> This is pretty much the same solution as on sequence-numbering..
>
> ---
> net/mac80211/tx.c | 7 +++++++
> 1 files changed, 7 insertions(+), 0 deletions(-)
>
> diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
> index cbe53ed..8abf015 100644
> --- a/net/mac80211/tx.c
> +++ b/net/mac80211/tx.c
> @@ -969,11 +969,18 @@ ieee80211_tx_h_encrypt(struct ieee80211_tx_data *tx)
> static ieee80211_tx_result debug_noinline
> ieee80211_tx_h_calculate_duration(struct ieee80211_tx_data *tx)
> {
> + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx->skb);
> struct sk_buff *skb = tx->skb;
> struct ieee80211_hdr *hdr;
> int next_len;
> bool group_addr;
>
> + /*
> + * Packet injection may want to control duration time.
> + */
> + if (unlikely(info->control.vif->type == NL80211_IFTYPE_MONITOR))
if(unlikely(info->flags & IEEE80211_TX_CTL_INJECTED) is better. Also,
check the cooked flag!
> + return TX_CONTINUE;
> +
> do {
> hdr = (void *) skb->data;
> if (unlikely(ieee80211_is_pspoll(hdr->frame_control)))
> --
> 1.6.4.4
>
>
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