lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

hostap: add radiotap support in monitor mode

Browse Source 
Provide MAC time, rate, channel, signal and noise.

Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Pavel Roskin
2008-06-27 16:20:10 -04:00
committed by John W. Linville
parent b53a5dabc5
commit 573b933f8f
3 changed files with 38 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
drivers/net/wireless/hostap/hostap_80211_rx.c
View File

@@ -78,6 +78,9 @@ int prism2_rx_80211(struct net_device *dev, struct sk_buff *skb,
prism_header = 2;
phdrlen = sizeof(struct linux_wlan_ng_cap_hdr);
}
} else if (dev->type == ARPHRD_IEEE80211_RADIOTAP) {
prism_header = 3;
phdrlen = sizeof(struct hostap_radiotap_rx);
} else {
prism_header = 0;
phdrlen = 0;
@@ -165,6 +168,24 @@ hdr->f.status = s; hdr->f.len = l; hdr->f.data = d
hdr->ssi_noise = htonl(rx_stats->noise);
hdr->preamble = htonl(0); /* unknown */
hdr->encoding = htonl(1); /* cck */
} else if (prism_header == 3) {
struct hostap_radiotap_rx *hdr;
hdr = (struct hostap_radiotap_rx *)skb_push(skb, phdrlen);
memset(hdr, 0, phdrlen);
hdr->hdr.it_len = cpu_to_le16(phdrlen);
hdr->hdr.it_present =
cpu_to_le32((1 << IEEE80211_RADIOTAP_TSFT) |
(1 << IEEE80211_RADIOTAP_CHANNEL) |
(1 << IEEE80211_RADIOTAP_RATE) |
(1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) |
(1 << IEEE80211_RADIOTAP_DBM_ANTNOISE));
hdr->tsft = cpu_to_le64(rx_stats->mac_time);
hdr->chan_freq = cpu_to_le16(freq_list[local->channel - 1]);
hdr->chan_flags = cpu_to_le16(IEEE80211_CHAN_CCK |
IEEE80211_CHAN_2GHZ);
hdr->rate = rx_stats->rate / 5;
hdr->dbm_antsignal = rx_stats->signal;
hdr->dbm_antnoise = rx_stats->noise;
}
ret = skb->len - phdrlen;