hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

hostap: add radiotap support in monitor mode 

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
Show Stats 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;

5
drivers/net/wireless/hostap/hostap_ioctl.c
View File

@ -897,6 +897,8 @@ static void hostap_monitor_set_type(local_info_t *local)
if (local->monitor_type == PRISM2_MONITOR_PRISM ||
local->monitor_type == PRISM2_MONITOR_CAPHDR) {
dev->type = ARPHRD_IEEE80211_PRISM;
} else if (local->monitor_type == PRISM2_MONITOR_RADIOTAP) {
dev->type = ARPHRD_IEEE80211_RADIOTAP;
} else {
dev->type = ARPHRD_IEEE80211;
}
@ -2520,7 +2522,8 @@ static int prism2_ioctl_priv_prism2_param(struct net_device *dev,
case PRISM2_PARAM_MONITOR_TYPE:
if (value != PRISM2_MONITOR_80211 &&
value != PRISM2_MONITOR_CAPHDR &&
value != PRISM2_MONITOR_PRISM) {
value != PRISM2_MONITOR_PRISM &&
value != PRISM2_MONITOR_RADIOTAP) {
ret = -EINVAL;
break;
}

14
drivers/net/wireless/hostap/hostap_wlan.h
View File

@ -5,6 +5,7 @@
#include <linux/netdevice.h>
#include <linux/mutex.h>
#include <net/iw_handler.h>
#include <net/ieee80211_radiotap.h>
#include "hostap_config.h"
#include "hostap_common.h"
@ -55,6 +56,17 @@ struct linux_wlan_ng_cap_hdr {
__be32 encoding;
} __attribute__ ((packed));
struct hostap_radiotap_rx {
struct ieee80211_radiotap_header hdr;
__le64 tsft;
u8 rate;
u8 padding;
__le16 chan_freq;
__le16 chan_flags;
s8 dbm_antsignal;
s8 dbm_antnoise;
} __attribute__ ((packed));
#define LWNG_CAP_DID_BASE (4 | (1 << 6)) /* section 4, group 1 */
#define LWNG_CAPHDR_VERSION 0x80211001
@ -734,7 +746,7 @@ struct local_info {
unsigned long scan_timestamp; /* Time started to scan */
enum {
PRISM2_MONITOR_80211 = 0, PRISM2_MONITOR_PRISM = 1,
PRISM2_MONITOR_CAPHDR = 2
PRISM2_MONITOR_CAPHDR = 2, PRISM2_MONITOR_RADIOTAP = 3
} monitor_type;
int monitor_allow_fcserr;