o add experimental radiotap capture format
o add netbsd logic to convert rssi to device-independent values Obtained from: NetBSD (rssi conversion code)
This commit is contained in:
Sam Leffler
parent
73454c7385
commit
8df91fc8bc
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=119784
@ -100,6 +100,7 @@ __FBSDID("$FreeBSD$");
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#include <net80211/ieee80211_var.h>
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#include <net80211/ieee80211_ioctl.h>
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#include <net80211/ieee80211_radiotap.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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@ -110,8 +111,8 @@ __FBSDID("$FreeBSD$");
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#include <net/bpf.h>
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#include <dev/wi/if_wavelan_ieee.h>
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#include <dev/wi/if_wivar.h>
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#include <dev/wi/if_wireg.h>
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#include <dev/wi/if_wivar.h>
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#define IF_POLL(ifq, m) ((m) = (ifq)->ifq_head)
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#define IFQ_POLL(ifq, m) IF_POLL((ifq), (m))
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@ -372,6 +373,10 @@ wi_attach(device_t dev)
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ic->ic_caps |= IEEE80211_C_MONITOR;
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}
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sc->sc_ibss_port = htole16(1);
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sc->sc_min_rssi = WI_LUCENT_MIN_RSSI;
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sc->sc_max_rssi = WI_LUCENT_MAX_RSSI;
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sc->sc_dbm_offset = WI_LUCENT_DBM_OFFSET;
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break;
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case WI_INTERSIL:
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@ -393,6 +398,10 @@ wi_attach(device_t dev)
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if (sc->sc_sta_firmware_ver >= 803)
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ic->ic_caps |= IEEE80211_C_HOSTAP;
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sc->sc_ibss_port = htole16(0);
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sc->sc_min_rssi = WI_PRISM_MIN_RSSI;
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sc->sc_max_rssi = WI_PRISM_MAX_RSSI;
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sc->sc_dbm_offset = WI_PRISM_DBM_OFFSET;
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break;
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case WI_SYMBOL:
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@ -401,6 +410,10 @@ wi_attach(device_t dev)
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if (sc->sc_sta_firmware_ver >= 25000)
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ic->ic_caps |= IEEE80211_C_IBSS;
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sc->sc_ibss_port = htole16(4);
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sc->sc_min_rssi = WI_PRISM_MIN_RSSI;
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sc->sc_max_rssi = WI_PRISM_MAX_RSSI;
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sc->sc_dbm_offset = WI_PRISM_DBM_OFFSET;
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break;
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}
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@ -431,9 +444,8 @@ wi_attach(device_t dev)
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buflen = sizeof(val);
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if ((sc->sc_flags & WI_FLAGS_HAS_DBMADJUST) &&
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wi_read_rid(sc, WI_RID_DBM_ADJUST, &val, &buflen) == 0) {
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sc->sc_dbm_adjust = le16toh(val);
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} else
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sc->sc_dbm_adjust = 100; /* default */
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sc->sc_dbm_offset = le16toh(val);
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}
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sc->sc_max_datalen = 2304;
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sc->sc_system_scale = 1;
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@ -460,6 +472,23 @@ wi_attach(device_t dev)
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ic->ic_newstate = wi_newstate;
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ieee80211_media_init(ifp, wi_media_change, wi_media_status);
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#if NBPFILTER > 0
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bpfattach2(ifp, DLT_IEEE802_11_RADIO,
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sizeof(struct ieee80211_frame) + sizeof(sc->sc_tx_th),
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&sc->sc_drvbpf);
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/*
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* Initialize constant fields.
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*
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* NB: the channel is setup each time we transition to the
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* RUN state to avoid filling it in for each frame.
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*/
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sc->sc_tx_th.wt_ihdr.it_len = sizeof(sc->sc_tx_th);
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sc->sc_tx_th.wt_ihdr.it_present = WI_TX_RADIOTAP_PRESENT;
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sc->sc_rx_th.wr_ihdr.it_len = sizeof(sc->sc_rx_th);
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sc->sc_rx_th.wr_ihdr.it_present = WI_RX_RADIOTAP_PRESENT0;
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sc->sc_rx_th.wr_present1 = WI_RX_RADIOTAP_PRESENT1;
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#endif
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return (0);
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}
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@ -477,6 +506,9 @@ wi_detach(device_t dev)
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wi_stop(ifp, 0);
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#if NBPFILTER > 0
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bpfdetach(ifp);
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#endif
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ieee80211_ifdetach(ifp);
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WI_UNLOCK(sc);
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bus_teardown_intr(dev, sc->irq, sc->wi_intrhand);
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@ -902,10 +934,9 @@ wi_start(struct ifnet *ifp)
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MGETHDR(mb, M_DONTWAIT, m0->m_type);
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if (mb != NULL) {
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(void) m_dup_pkthdr(mb, m0, M_DONTWAIT);
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mb->m_next = m0;
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mb->m_data = (caddr_t)&frmhdr;
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mb->m_len = sizeof(frmhdr);
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mb->m_data = (caddr_t)&sc->sc_tx_th;
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mb->m_len = sizeof(sc->sc_tx_th);
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mb->m_pkthdr.len += mb->m_len;
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bpf_mtap(sc->sc_drvbpf, mb);
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m_free(mb);
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@ -1449,12 +1480,23 @@ wi_rx_intr(struct wi_softc *sc)
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if (sc->sc_drvbpf) {
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struct mbuf *mb;
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/* XXX pre-allocate space when setting up recv's */
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MGETHDR(mb, M_DONTWAIT, m->m_type);
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if (mb != NULL) {
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/* XXX replace divide by table */
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sc->sc_rx_th.wr_rate = frmhdr.wi_rx_rate / 5;
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sc->sc_rx_th.wr_antsignal =
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WI_RSSI_TO_DBM(sc, frmhdr.wi_rx_signal);
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sc->sc_rx_th.wr_antnoise =
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WI_RSSI_TO_DBM(sc, frmhdr.wi_rx_silence);
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sc->sc_rx_th.wr_time =
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htole32((frmhdr.wi_rx_tstamp1 << 16) |
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frmhdr.wi_rx_tstamp0);
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(void) m_dup_pkthdr(mb, m, M_DONTWAIT);
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mb->m_next = m;
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mb->m_data = (caddr_t)&frmhdr;
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mb->m_len = sizeof(frmhdr);
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mb->m_data = (caddr_t)&sc->sc_rx_th;
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mb->m_len = sizeof(sc->sc_rx_th);
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mb->m_pkthdr.len += mb->m_len;
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bpf_mtap(sc->sc_drvbpf, mb);
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m_free(mb);
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@ -1837,7 +1879,7 @@ wi_get_cfg(struct ifnet *ifp, u_long cmd, caddr_t data)
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&len);
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break;
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}
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wreq.wi_val[0] = htole16(sc->sc_dbm_adjust);
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wreq.wi_val[0] = htole16(sc->sc_dbm_offset);
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len = sizeof(u_int16_t);
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break;
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@ -2608,6 +2650,12 @@ wi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg)
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wi_read_rid(sc, WI_RID_CURRENT_CHAN, &val, &buflen);
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/* XXX validate channel */
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ni->ni_chan = &ic->ic_channels[le16toh(val)];
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#if NBPFILTER > 0
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sc->sc_tx_th.wt_chan_freq = sc->sc_rx_th.wr_chan_freq =
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htole16(ni->ni_chan->ic_freq);
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sc->sc_tx_th.wt_chan_flags = sc->sc_rx_th.wr_chan_flags =
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htole16(ni->ni_chan->ic_flags);
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#endif
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if (IEEE80211_ADDR_EQ(old_bssid, ni->ni_bssid))
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sc->sc_false_syns++;
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@ -62,6 +62,7 @@ __FBSDID("$FreeBSD$");
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#include <net/if_types.h>
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#include <net80211/ieee80211_var.h>
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#include <net80211/ieee80211_radiotap.h>
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#include <dev/pccard/pccardvar.h>
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#if __FreeBSD_version >= 500000
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@ -69,8 +70,8 @@ __FBSDID("$FreeBSD$");
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#endif
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#include <dev/wi/if_wavelan_ieee.h>
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#include <dev/wi/if_wivar.h>
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#include <dev/wi/if_wireg.h>
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#include <dev/wi/if_wivar.h>
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#ifdef WI_SYMBOL_FIRMWARE
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#include <dev/wi/spectrum24t_cf.h>
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#endif
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@ -62,10 +62,11 @@
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#include <net/if_types.h>
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#include <net80211/ieee80211_var.h>
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#include <net80211/ieee80211_radiotap.h>
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#include <dev/wi/if_wavelan_ieee.h>
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#include <dev/wi/if_wivar.h>
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#include <dev/wi/if_wireg.h>
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#include <dev/wi/if_wivar.h>
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static int wi_pci_probe(device_t);
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static int wi_pci_attach(device_t);
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@ -679,3 +679,39 @@ struct wi_frame {
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*/
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#define WI_HFA386X_CR_A_D_TEST_MODES2 0x1A
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#define WI_HFA386X_CR_MANUAL_TX_POWER 0x3E
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#ifdef IEEE80211_RADIOTAP_F_CFP
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/*
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* Radio capture format for Prism.
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*/
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#define WI_RX_RADIOTAP_PRESENT0 \
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((1 << IEEE80211_RADIOTAP_FLAGS) | \
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(1 << IEEE80211_RADIOTAP_RATE) | \
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(1 << IEEE80211_RADIOTAP_CHANNEL) | \
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(1 << IEEE80211_RADIOTAP_DB_ANTSIGNAL) | \
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(1 << IEEE80211_RADIOTAP_DB_ANTNOISE) | \
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(1 << IEEE80211_RADIOTAP_EXT))
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#define WI_RX_RADIOTAP_PRESENT1 (1 << (IEEE80211_RADIOTAP_TIME - 32))
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struct wi_rx_radiotap_header {
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struct ieee80211_radiotap_header wr_ihdr;
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u_int32_t wr_present1;
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u_int8_t wr_flags;
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u_int8_t wr_rate;
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u_int16_t wr_chan_freq;
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u_int16_t wr_chan_flags;
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u_int8_t wr_antsignal;
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u_int8_t wr_antnoise;
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u_int32_t wr_time;
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};
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#define WI_TX_RADIOTAP_PRESENT \
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((1 << IEEE80211_RADIOTAP_CHANNEL))
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struct wi_tx_radiotap_header {
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struct ieee80211_radiotap_header wt_ihdr;
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u_int16_t wt_chan_freq;
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u_int16_t wt_chan_flags;
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};
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#endif /* IEEE80211_RADIOTAP_F_CFP */
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@ -106,7 +106,11 @@ struct wi_softc {
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u_int16_t sc_procframe;
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u_int16_t sc_portnum;
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u_int16_t sc_dbm_adjust;
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/* RSSI interpretation */
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u_int16_t sc_min_rssi; /* clamp sc_min_rssi < RSSI */
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u_int16_t sc_max_rssi; /* clamp RSSI < sc_max_rssi */
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u_int16_t sc_dbm_offset; /* dBm ~ RSSI - sc_dbm_offset */
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u_int16_t sc_max_datalen;
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u_int16_t sc_system_scale;
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u_int16_t sc_cnfauthmode;
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@ -158,8 +162,19 @@ struct wi_softc {
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int sc_false_syns;
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u_int16_t sc_txbuf[IEEE80211_MAX_LEN/2];
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union {
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struct wi_tx_radiotap_header th;
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u_int8_t pad[64];
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} u_tx_rt;
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union {
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struct wi_rx_radiotap_header th;
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u_int8_t pad[64];
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} u_rx_rt;
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};
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#define sc_if sc_ic.ic_if
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#define sc_tx_th u_tx_rt.th
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#define sc_rx_th u_rx_rt.th
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/* maximum consecutive false change-of-BSSID indications */
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#define WI_MAX_FALSE_SYNS 10
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@ -184,6 +199,17 @@ struct wi_card_ident {
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u_int8_t firm_type;
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};
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#define WI_PRISM_MIN_RSSI 0x1b
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#define WI_PRISM_MAX_RSSI 0x9a
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#define WI_PRISM_DBM_OFFSET 100 /* XXX */
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#define WI_LUCENT_MIN_RSSI 47
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#define WI_LUCENT_MAX_RSSI 138
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#define WI_LUCENT_DBM_OFFSET 149
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#define WI_RSSI_TO_DBM(sc, rssi) (MIN((sc)->sc_max_rssi, \
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MAX((sc)->sc_min_rssi, (rssi))) - (sc)->sc_dbm_offset)
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#if __FreeBSD_version < 500000
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/*
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* Various compat hacks/kludges
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