Differential D6205 Diff 15893 sys/net80211/ieee80211_regdomain.c

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sys/net80211/ieee80211_regdomain.c

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	static int			static int
	null_setregdomain(struct ieee80211com *ic,			null_setregdomain(struct ieee80211com *ic,
	struct ieee80211_regdomain *rd,			struct ieee80211_regdomain *rd,
	int nchans, struct ieee80211_channel chans[])			int nchans, struct ieee80211_channel chans[])
	{			{
	return 0; /* accept anything */			return 0; /* accept anything */
	}			}

				/* FCC regdomain limitations. Extracted from regdomain.xml */
				static const struct freqband {
				uint16_t freq_min;
				uint16_t freq_max;
				int8_t maxregpower;
				uint32_t flags;
				} fcc_bands[] = {
				{ 2412, 2462, 30, IEEE80211_CHAN_B },
				{ 2412, 2462, 30, IEEE80211_CHAN_G },
				{ 2412, 2462, 30, IEEE80211_CHAN_G \| IEEE80211_CHAN_HT20 },
				{ 2432, 2462, 30, IEEE80211_CHAN_G \| IEEE80211_CHAN_HT40D },
				{ 2412, 2442, 30, IEEE80211_CHAN_G \| IEEE80211_CHAN_HT40U },
				{ 5180, 5240, 17, IEEE80211_CHAN_A },
				{ 5180, 5240, 17, IEEE80211_CHAN_A \| IEEE80211_CHAN_HT20 },
				{ 5200, 5240, 17, IEEE80211_CHAN_A \| IEEE80211_CHAN_HT40D },
				{ 5180, 5220, 17, IEEE80211_CHAN_A \| IEEE80211_CHAN_HT40U },
				{ 5745, 5805, 23, IEEE80211_CHAN_A },
				{ 5745, 5805, 23, IEEE80211_CHAN_A \| IEEE80211_CHAN_HT20 },
				{ 5765, 5805, 23, IEEE80211_CHAN_A \| IEEE80211_CHAN_HT40D },
				{ 5745, 5785, 23, IEEE80211_CHAN_A \| IEEE80211_CHAN_HT40U },
				{ 5825, 5825, 23, IEEE80211_CHAN_A \| IEEE80211_CHAN_PASSIVE },
				{ 0, 0, 0, 0 }
				};

				static void
				removechan(struct ieee80211com *ic, int idx)
				{
				struct ieee80211_channel *chan = &ic->ic_channels[0];

				KASSERT(idx < ic->ic_nchans, ("wrong index %d (%d)\n", idx,
				ic->ic_nchans));

				ic->ic_nchans--;
				memcpy(&chan[idx], &chan[ic->ic_nchans], sizeof(*chan));
				memset(&chan[ic->ic_nchans], 0, sizeof(*chan));
				}

				static int
				checkchan(struct ieee80211_channel *c, const struct freqband fbands[])
				{
				const struct freqband *fb;
				uint32_t flags;
				int i;

				flags = c->ic_flags & IEEE80211_CHAN_ALLTURBO;
				/* brute force search */
				for (i = 0; fbands[i].freq_max != 0; i++) {
				fb = &fbands[i];

				if (flags == (fb->flags & IEEE80211_CHAN_ALLTURBO) &&
				fb->freq_min <= c->ic_freq &&
				fb->freq_max >= c->ic_freq) {
				if (fb->maxregpower < c->ic_maxregpower) {
				c->ic_maxregpower = fb->maxregpower;
				c->ic_maxpower = fb->maxregpower * 2;

				if (c->ic_minpower > c->ic_maxpower)
				c->ic_minpower = c->ic_maxpower;
				}
				/* add PASSIVE, DFS etc flags. */
				c->ic_flags \|= (fb->flags & ~IEEE80211_CHAN_ALLTURBO);
				return (1);
				}
				}

				return (0);
				}

				static void
				channel_plan_init(struct ieee80211com *ic, const struct freqband fbands[])
				{
				int i, found;

				for (i = 0; i < ic->ic_nchans;) {
				found = checkchan(&ic->ic_channels[i], fbands);
				if (!found)
				removechan(ic, i);
				else
				i++;
				}

				ieee80211_chan_init(ic);
				}

				static void
				regdomain_init(struct ieee80211com *ic)
				{
				struct ieee80211_regdomain *rd = &ic->ic_regdomain;

				/* init by default to FCC/US */
				rd->regdomain = SKU_FCC;
				rd->country = CTRY_UNITED_STATES;
				rd->location = ' '; /* both */
				rd->isocc[0] = 'U';
				rd->isocc[1] = 'S';

				channel_plan_init(ic, fcc_bands);
				}

	void			void
	ieee80211_regdomain_attach(struct ieee80211com *ic)			ieee80211_regdomain_attach(struct ieee80211com *ic)
	{			{
	if (ic->ic_regdomain.regdomain == 0 &&			if (ic->ic_regdomain.regdomain == 0 &&
	ic->ic_regdomain.country == CTRY_DEFAULT) {			ic->ic_regdomain.country == CTRY_DEFAULT)
	ic->ic_regdomain.country = CTRY_UNITED_STATES; /* XXX */			regdomain_init(ic);
	ic->ic_regdomain.location = ' '; /* both */
	ic->ic_regdomain.isocc[0] = 'U'; /* XXX */
	ic->ic_regdomain.isocc[1] = 'S'; /* XXX */
	/* NB: driver calls ieee80211_init_channels or similar */
	}
	ic->ic_getradiocaps = null_getradiocaps;			ic->ic_getradiocaps = null_getradiocaps;
	ic->ic_setregdomain = null_setregdomain;			ic->ic_setregdomain = null_setregdomain;
	}			}

	void			void
	ieee80211_regdomain_detach(struct ieee80211com *ic)			ieee80211_regdomain_detach(struct ieee80211com *ic)
	{			{
	if (ic->ic_countryie != NULL) {			if (ic->ic_countryie != NULL) {
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