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wifi: iwlwifi: mld: allow EMLSR on separated 5 GHz subbands

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If there are two links on 5 GHz subbands that are separated
enough (using channels 36-64 and 100+) then we can support
EMLSR across those two links. Allow that in the logic.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250424153620.d568a26661d5.Ie4277945272c5bbf637957704fda34ea03ef28d2@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg
2025-04-24 15:38:22 +03:00
parent 517500f1d7
commit 0ac68a7700
1 changed files with 22 additions and 2 deletions
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24
drivers/net/wireless/intel/iwlwifi/mld/mlo.c
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@@ -805,8 +805,28 @@ iwl_mld_valid_emlsr_pair(struct ieee80211_vif *vif,
iwl_mld_emlsr_disallowed_with_link(mld, vif, b, false))
return false;
if (a->chandef->chan->band == b->chandef->chan->band)
reason_mask |= IWL_MLD_EMLSR_EXIT_EQUAL_BAND;
if (a->chandef->chan->band == b->chandef->chan->band) {
const struct cfg80211_chan_def *c_low = a->chandef;
const struct cfg80211_chan_def *c_high = b->chandef;
u32 c_low_upper_edge, c_high_lower_edge;
if (c_low->chan->center_freq > c_high->chan->center_freq)
swap(c_low, c_high);
c_low_upper_edge = c_low->chan->center_freq +
cfg80211_chandef_get_width(c_low) / 2;
c_high_lower_edge = c_high->chan->center_freq -
cfg80211_chandef_get_width(c_high) / 2;
if (a->chandef->chan->band == NL80211_BAND_5GHZ &&
c_low_upper_edge <= 5330 && c_high_lower_edge >= 5490) {
/* This case is fine - HW/FW can deal with it, there's
* enough separation between the two channels.
*/
} else {
reason_mask |= IWL_MLD_EMLSR_EXIT_EQUAL_BAND;
}
}
if (!iwl_mld_channel_load_allows_emlsr(mld, vif, a, b))
reason_mask |= IWL_MLD_EMLSR_EXIT_CHAN_LOAD;