First cut at half/quarter-rate 11a channel support (e.g. for use
in the Public Safety Band): o add channel flags to identify half/quarter-rate operation o add rate sets (need to check spec on 4Mb/s in 1/4 rate) o add if_media definitions for new rates o split net80211 channel setup out into ieee80211_chan_init o fixup ieee80211_mhz2ieee and ieee80211_ieee2mhz to understand half/quarter rate channels: note we temporarily use a nonstandard/hack numbering that avoids overlap with 2.4G channels because we don't (yet) have enough state to identify and/or map overlapping channel sets o fixup ieee80211_ifmedia_init so it can be called post attach and will recalculate the channel list and associated state; this enables changing channel-related state like the regulatory domain after attach (will be needed for 802.11d support too) o add ieee80211_get_suprates to return a reference to the supported rate set for a given channel o add 3, 4.5, and 27 MB/s tx rates to rate <-> media conversion routines o const-poison channel arg to ieee80211_chan2mode
This commit is contained in:
parent
bf42b54c6c
commit
41b3c790eb
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=165569
@ -198,6 +198,9 @@ uint64_t ifmedia_baudrate(int);
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#define IFM_IEEE80211_OFDM72 18 /* OFDM 72Mbps */
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#define IFM_IEEE80211_DS354k 19 /* Direct Sequence 354Kbps */
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#define IFM_IEEE80211_DS512k 20 /* Direct Sequence 512Kbps */
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#define IFM_IEEE80211_OFDM3 21 /* OFDM 3Mbps */
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#define IFM_IEEE80211_OFDM4 22 /* OFDM 4.5Mbps */
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#define IFM_IEEE80211_OFDM27 23 /* OFDM 27Mbps */
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#define IFM_IEEE80211_ADHOC 0x00000100 /* Operate in Adhoc mode */
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#define IFM_IEEE80211_HOSTAP 0x00000200 /* Operate in Host AP mode */
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@ -437,6 +440,9 @@ struct ifmedia_description {
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{ IFM_IEEE80211_OFDM72, "OFDM/72Mbps" }, \
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{ IFM_IEEE80211_DS354k, "DS/354Kbps" }, \
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{ IFM_IEEE80211_DS512k, "DS/512Kbps" }, \
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{ IFM_IEEE80211_OFDM3, "OFDM/3Mbps" }, \
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{ IFM_IEEE80211_OFDM4, "OFDM/4.5Mbps" }, \
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{ IFM_IEEE80211_OFDM27, "OFDM/27Mbps" }, \
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{ 0, NULL }, \
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}
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@ -472,6 +478,9 @@ struct ifmedia_description {
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{ IFM_IEEE80211_DS354k, "DirectSequence/354Kbps" }, \
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{ IFM_IEEE80211_DS512k, "DS512K" }, \
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{ IFM_IEEE80211_DS512k, "DirectSequence/512Kbps" }, \
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{ IFM_IEEE80211_OFDM3, "OFDM3" }, \
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{ IFM_IEEE80211_OFDM4, "OFDM4.5" }, \
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{ IFM_IEEE80211_OFDM27, "OFDM27" }, \
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{ 0, NULL }, \
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}
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@ -123,6 +123,8 @@ struct ieee80211_channel {
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#define IEEE80211_CHAN_PASSIVE 0x0200 /* Only passive scan allowed */
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#define IEEE80211_CHAN_DYN 0x0400 /* Dynamic CCK-OFDM channel */
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#define IEEE80211_CHAN_GFSK 0x0800 /* GFSK channel (FHSS PHY) */
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#define IEEE80211_CHAN_HALF 0x4000 /* Half rate channel */
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#define IEEE80211_CHAN_QUARTER 0x8000 /* Quarter rate channel */
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/*
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* Useful combinations of channel characteristics.
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@ -175,6 +177,10 @@ struct ieee80211_channel {
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(((_c)->ic_flags & IEEE80211_CHAN_CCK) != 0)
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#define IEEE80211_IS_CHAN_GFSK(_c) \
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(((_c)->ic_flags & IEEE80211_CHAN_GFSK) != 0)
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#define IEEE80211_IS_CHAN_HALF(_c) \
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(((_c)->ic_flags & IEEE80211_CHAN_HALF) != 0)
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#define IEEE80211_IS_CHAN_QUARTER(_c) \
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(((_c)->ic_flags & IEEE80211_CHAN_QUARTER) != 0)
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/* ni_chan encoding for FH phy */
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#define IEEE80211_FH_CHANMOD 80
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@ -67,6 +67,10 @@ const char *ieee80211_phymode_name[] = {
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#define B(r) ((r) | IEEE80211_RATE_BASIC)
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static const struct ieee80211_rateset ieee80211_rateset_11a =
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{ 8, { B(12), 18, B(24), 36, B(48), 72, 96, 108 } };
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static const struct ieee80211_rateset ieee80211_rateset_half =
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{ 8, { B(6), 9, B(12), 18, B(24), 36, 48, 54 } };
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static const struct ieee80211_rateset ieee80211_rateset_quarter =
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{ 8, { B(3), 4, B(6), 9, B(12), 18, 24, 27 } };
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static const struct ieee80211_rateset ieee80211_rateset_11b =
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{ 4, { B(2), B(4), B(11), B(22) } };
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/* NB: OFDM rates are handled specially based on mode */
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@ -131,30 +135,25 @@ ieee80211_default_reset(struct ifnet *ifp)
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return ENETRESET;
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}
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void
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ieee80211_ifattach(struct ieee80211com *ic)
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/*
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* Fill in 802.11 available channel set, mark
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* all available channels as active, and pick
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* a default channel if not already specified.
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*/
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static void
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ieee80211_chan_init(struct ieee80211com *ic)
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{
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#define RATESDEFINED(m) \
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((ic->ic_modecaps & (1<<m)) && ic->ic_sup_rates[m].rs_nrates != 0)
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#define DEFAULTRATES(m, def) do { \
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if (!RATESDEFINED(m)) ic->ic_sup_rates[m] = def; \
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} while (0)
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struct ifnet *ifp = ic->ic_ifp;
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struct ieee80211_channel *c;
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int i;
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ether_ifattach(ifp, ic->ic_myaddr);
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ifp->if_output = ieee80211_output;
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bpfattach2(ifp, DLT_IEEE802_11,
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sizeof(struct ieee80211_frame_addr4), &ic->ic_rawbpf);
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ieee80211_crypto_attach(ic);
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/*
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* Fill in 802.11 available channel set, mark
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* all available channels as active, and pick
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* a default channel if not already specified.
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*/
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memset(ic->ic_chan_avail, 0, sizeof(ic->ic_chan_avail));
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ic->ic_modecaps |= 1<<IEEE80211_MODE_AUTO;
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ic->ic_modecaps = 1<<IEEE80211_MODE_AUTO;
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for (i = 0; i <= IEEE80211_CHAN_MAX; i++) {
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c = &ic->ic_channels[i];
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if (c->ic_flags) {
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@ -190,22 +189,42 @@ ieee80211_ifattach(struct ieee80211com *ic)
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}
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}
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}
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/* validate ic->ic_curmode */
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if ((ic->ic_modecaps & (1<<ic->ic_curmode)) == 0)
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ic->ic_curmode = IEEE80211_MODE_AUTO;
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ic->ic_des_chan = IEEE80211_CHAN_ANYC; /* any channel is ok */
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/* fillin well-known rate sets if driver has not specified */
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if (!RATESDEFINED(IEEE80211_MODE_11B))
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ic->ic_sup_rates[IEEE80211_MODE_11B] = ieee80211_rateset_11b;
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if (!RATESDEFINED(IEEE80211_MODE_11G))
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ic->ic_sup_rates[IEEE80211_MODE_11G] = ieee80211_rateset_11g;
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if (!RATESDEFINED(IEEE80211_MODE_11A))
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ic->ic_sup_rates[IEEE80211_MODE_11A] = ieee80211_rateset_11a;
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if (!RATESDEFINED(IEEE80211_MODE_TURBO_A))
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ic->ic_sup_rates[IEEE80211_MODE_TURBO_A] = ieee80211_rateset_11a;
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if (!RATESDEFINED(IEEE80211_MODE_TURBO_G))
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ic->ic_sup_rates[IEEE80211_MODE_TURBO_G] = ieee80211_rateset_11g;
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DEFAULTRATES(IEEE80211_MODE_11B, ieee80211_rateset_11b);
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DEFAULTRATES(IEEE80211_MODE_11G, ieee80211_rateset_11g);
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DEFAULTRATES(IEEE80211_MODE_11A, ieee80211_rateset_11a);
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DEFAULTRATES(IEEE80211_MODE_TURBO_A, ieee80211_rateset_11a);
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DEFAULTRATES(IEEE80211_MODE_TURBO_G, ieee80211_rateset_11g);
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/*
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* Set auto mode to reset active channel state and any desired channel.
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*/
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(void) ieee80211_setmode(ic, IEEE80211_MODE_AUTO);
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#undef DEFAULTRATES
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#undef RATESDEFINED
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}
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void
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ieee80211_ifattach(struct ieee80211com *ic)
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{
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struct ifnet *ifp = ic->ic_ifp;
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ether_ifattach(ifp, ic->ic_myaddr);
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ifp->if_output = ieee80211_output;
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bpfattach2(ifp, DLT_IEEE802_11,
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sizeof(struct ieee80211_frame_addr4), &ic->ic_rawbpf);
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ieee80211_crypto_attach(ic);
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ic->ic_des_chan = IEEE80211_CHAN_ANYC;
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/*
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* Fill in 802.11 available channel set, mark all
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* available channels as active, and pick a default
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* channel if not already specified.
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*/
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ieee80211_chan_init(ic);
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#if 0
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/*
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* Enable WME by default if we're capable.
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@ -215,7 +234,6 @@ ieee80211_ifattach(struct ieee80211com *ic)
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#endif
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if (ic->ic_caps & IEEE80211_C_BURST)
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ic->ic_flags |= IEEE80211_F_BURST;
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(void) ieee80211_setmode(ic, ic->ic_curmode);
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ic->ic_bintval = IEEE80211_BINTVAL_DEFAULT;
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ic->ic_bmissthreshold = IEEE80211_HWBMISS_DEFAULT;
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@ -241,7 +259,6 @@ ieee80211_ifattach(struct ieee80211com *ic)
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KASSERT(ifp->if_spare2 == NULL, ("oops, hosed"));
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ifp->if_spare2 = ic; /* XXX temp backpointer */
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#undef RATESDEFINED
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}
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void
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@ -277,9 +294,12 @@ ieee80211_mhz2ieee(u_int freq, u_int flags)
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else
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return 15 + ((freq - 2512) / 20);
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} else if (flags & IEEE80211_CHAN_5GHZ) { /* 5Ghz band */
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if (freq <= 5000)
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if (freq <= 5000) {
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if (flags &(IEEE80211_CHAN_HALF|IEEE80211_CHAN_QUARTER))
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return 37 + ((freq * 10) +
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((freq % 5) == 2 ? 5 : 0) - 49400) / 5;
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return (freq - 4000) / 5;
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else
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} else
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return (freq - 5000) / 5;
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} else { /* either, guess */
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if (freq == 2484)
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@ -287,7 +307,10 @@ ieee80211_mhz2ieee(u_int freq, u_int flags)
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if (freq < 2484)
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return ((int) freq - 2407) / 5;
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if (freq < 5000) {
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if (freq > 4900)
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if (flags &(IEEE80211_CHAN_HALF|IEEE80211_CHAN_QUARTER))
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return 37 + ((freq * 10) +
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((freq % 5) == 2 ? 5 : 0) - 49400) / 5;
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else if (freq > 4900)
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return (freq - 4000) / 5;
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else
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return 15 + ((freq - 2512) / 20);
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@ -330,6 +353,10 @@ ieee80211_ieee2mhz(u_int chan, u_int flags)
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else
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return 2512 + ((chan-15)*20);
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} else if (flags & IEEE80211_CHAN_5GHZ) {/* 5Ghz band */
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if (flags & (IEEE80211_CHAN_HALF|IEEE80211_CHAN_QUARTER)) {
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chan -= 37;
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return 4940 + chan*5 + (chan % 5 ? 2 : 0);
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}
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return 5000 + (chan*5);
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} else { /* either, guess */
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if (chan == 14)
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@ -338,6 +365,7 @@ ieee80211_ieee2mhz(u_int chan, u_int flags)
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return 2407 + chan*5;
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if (chan < 27) /* 15-26 */
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return 2512 + ((chan-15)*20);
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/* XXX can't distinguish PSB channels */
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return 5000 + (chan*5);
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}
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}
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@ -360,11 +388,22 @@ ieee80211_media_init(struct ieee80211com *ic,
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struct ieee80211_rateset *rs;
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struct ieee80211_rateset allrates;
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/*
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* Do late attach work that must wait for any subclass
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* (i.e. driver) work such as overriding methods.
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*/
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ieee80211_node_lateattach(ic);
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/* NB: this works because the structure is initialized to zero */
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if (LIST_EMPTY(&ic->ic_media.ifm_list)) {
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/*
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* Do late attach work that must wait for any subclass
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* (i.e. driver) work such as overriding methods.
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*/
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ieee80211_node_lateattach(ic);
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} else {
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/*
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* We are re-initializing the channel list; clear
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* the existing media state as the media routines
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* don't suppress duplicates.
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*/
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ifmedia_removeall(&ic->ic_media);
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ieee80211_chan_init(ic);
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}
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/*
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* Fill in media characteristics.
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@ -452,6 +491,20 @@ ieee80211_media_init(struct ieee80211com *ic,
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#undef ADD
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}
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const struct ieee80211_rateset *
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ieee80211_get_suprates(struct ieee80211com *ic, const struct ieee80211_channel *c)
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{
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enum ieee80211_phymode mode = ieee80211_chan2mode(ic, c);
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if (mode == IEEE80211_MODE_11A) {
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if (IEEE80211_IS_CHAN_HALF(c))
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return &ieee80211_rateset_half;
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if (IEEE80211_IS_CHAN_QUARTER(c))
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return &ieee80211_rateset_quarter;
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}
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return &ic->ic_sup_rates[mode];
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}
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void
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ieee80211_announce(struct ieee80211com *ic)
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{
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@ -697,7 +750,7 @@ void
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ieee80211_media_status(struct ifnet *ifp, struct ifmediareq *imr)
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{
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struct ieee80211com *ic;
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struct ieee80211_rateset *rs;
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const struct ieee80211_rateset *rs;
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ic = ieee80211_find_instance(ifp);
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if (!ic) {
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@ -932,7 +985,7 @@ ieee80211_setmode(struct ieee80211com *ic, enum ieee80211_phymode mode)
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* In those cases we defer to the current operating mode when set.
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*/
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enum ieee80211_phymode
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ieee80211_chan2mode(struct ieee80211com *ic, struct ieee80211_channel *chan)
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ieee80211_chan2mode(struct ieee80211com *ic, const struct ieee80211_channel *chan)
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{
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if (IEEE80211_IS_CHAN_T(chan)) {
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return IEEE80211_MODE_TURBO_A;
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@ -993,6 +1046,9 @@ ieee80211_rate2media(struct ieee80211com *ic, int rate, enum ieee80211_phymode m
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{ 72 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM36 },
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{ 96 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM48 },
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{ 108 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM54 },
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{ 6 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM3 },
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{ 9 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM4 },
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{ 54 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM27 },
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/* NB: OFDM72 doesn't realy exist so we don't handle it */
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};
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u_int mask, i;
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@ -1053,6 +1109,11 @@ ieee80211_media2rate(int mword)
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96, /* IFM_IEEE80211_OFDM48 */
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108, /* IFM_IEEE80211_OFDM54 */
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144, /* IFM_IEEE80211_OFDM72 */
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0, /* IFM_IEEE80211_DS354k */
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0, /* IFM_IEEE80211_DS512k */
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6, /* IFM_IEEE80211_OFDM3 */
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9, /* IFM_IEEE80211_OFDM4 */
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54, /* IFM_IEEE80211_OFDM27 */
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};
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return IFM_SUBTYPE(mword) < N(ieeerates) ?
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ieeerates[IFM_SUBTYPE(mword)] : 0;
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|
@ -230,7 +230,7 @@ ieee80211_set_chan(struct ieee80211com *ic,
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if (chan == IEEE80211_CHAN_ANYC) /* XXX while scanning */
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chan = ic->ic_curchan;
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ni->ni_chan = chan;
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ni->ni_rates = ic->ic_sup_rates[ieee80211_chan2mode(ic, chan)];
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ni->ni_rates = *ieee80211_get_suprates(ic, chan);
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}
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/*
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@ -344,8 +344,7 @@ ieee80211_next_scan(struct ieee80211com *ic)
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* XXX drivers should do this as needed,
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* XXX for now maintain compatibility
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*/
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ic->ic_bss->ni_rates =
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ic->ic_sup_rates[ieee80211_chan2mode(ic, chan)];
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ic->ic_bss->ni_rates = *ieee80211_get_suprates(ic, chan);
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ieee80211_new_state(ic, IEEE80211_S_SCAN, -1);
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return 1;
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}
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|
@ -1110,8 +1110,8 @@ ieee80211_send_probereq(struct ieee80211_node *ni,
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const void *optie, size_t optielen)
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{
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struct ieee80211com *ic = ni->ni_ic;
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enum ieee80211_phymode mode;
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struct ieee80211_frame *wh;
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const struct ieee80211_rateset *rs;
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struct mbuf *m;
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u_int8_t *frm;
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@ -1147,9 +1147,9 @@ ieee80211_send_probereq(struct ieee80211_node *ni,
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}
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frm = ieee80211_add_ssid(frm, ssid, ssidlen);
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mode = ieee80211_chan2mode(ic, ic->ic_curchan);
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frm = ieee80211_add_rates(frm, &ic->ic_sup_rates[mode]);
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frm = ieee80211_add_xrates(frm, &ic->ic_sup_rates[mode]);
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rs = ieee80211_get_suprates(ic, ic->ic_curchan);
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frm = ieee80211_add_rates(frm, rs);
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frm = ieee80211_add_xrates(frm, rs);
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if (optie != NULL) {
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memcpy(frm, optie, optielen);
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|
@ -329,7 +329,8 @@ ieee80211_fix_rate(struct ieee80211_node *ni, int flags)
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struct ieee80211com *ic = ni->ni_ic;
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int i, j, ignore, error;
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int okrate, badrate, fixedrate;
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struct ieee80211_rateset *srs, *nrs;
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const struct ieee80211_rateset *srs;
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struct ieee80211_rateset *nrs;
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u_int8_t r;
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/*
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@ -341,7 +342,7 @@ ieee80211_fix_rate(struct ieee80211_node *ni, int flags)
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flags &= ~IEEE80211_F_DOFRATE;
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error = 0;
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okrate = badrate = fixedrate = 0;
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srs = &ic->ic_sup_rates[ieee80211_chan2mode(ic, ni->ni_chan)];
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srs = ieee80211_get_suprates(ic, ni->ni_chan);
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nrs = &ni->ni_rates;
|
||||
for (i = 0; i < nrs->rs_nrates; ) {
|
||||
ignore = 0;
|
||||
|
@ -285,6 +285,8 @@ struct ieee80211com {
|
||||
|
||||
void ieee80211_ifattach(struct ieee80211com *);
|
||||
void ieee80211_ifdetach(struct ieee80211com *);
|
||||
const struct ieee80211_rateset *ieee80211_get_suprates(struct ieee80211com *,
|
||||
const struct ieee80211_channel *);
|
||||
void ieee80211_announce(struct ieee80211com *);
|
||||
void ieee80211_media_init(struct ieee80211com *,
|
||||
ifm_change_cb_t, ifm_stat_cb_t);
|
||||
@ -303,7 +305,7 @@ int ieee80211_chan2ieee(struct ieee80211com *, struct ieee80211_channel *);
|
||||
u_int ieee80211_ieee2mhz(u_int, u_int);
|
||||
int ieee80211_setmode(struct ieee80211com *, enum ieee80211_phymode);
|
||||
enum ieee80211_phymode ieee80211_chan2mode(struct ieee80211com *,
|
||||
struct ieee80211_channel *);
|
||||
const struct ieee80211_channel *);
|
||||
|
||||
/*
|
||||
* Key update synchronization methods. XXX should not be visible.
|
||||
|
Loading…
Reference in New Issue
Block a user