From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 27B9C1F943D; Wed, 6 Nov 2024 12:48:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730897335; cv=none; b=Xpsht2K3s/zi3w4KrFvlMvaa28aRKjjo3CT018AmZS5ATOYJOV3FkC80AaIC+8dYQfNBG8IdJVi8DL6fwwsUrIe3AB+L1+2QVW3sodYm0R87taEgFU5WZXLKP+GjJuJOLgM5V2YTFoT/VBD8q5AHD73zvRbm+ksJ0UCp7ukXh8g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730897335; c=relaxed/simple; bh=SSxak3SB3+VAYBaq3bQoahgUS7tqZ3S7ACI8wyCxeIE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=W/tOHttMbhdrwPbOA99a/YCFcsqdt+FwbyFFKrWg0ub12n3AMIeyYpZspc0WU1TfVBhamSAtlsiqh8T/bvGlP2k/RbpE3hHcV8/A3RcXM7wBiOpqFIfLCa+/AV5+Mtr15lcWL35JT2rxwAxPlA6aUPvO4NGqRB+peeajow5ml6c= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=s8PiRf8+; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="s8PiRf8+" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 54D39C4CECD; Wed, 6 Nov 2024 12:48:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1730897334; bh=SSxak3SB3+VAYBaq3bQoahgUS7tqZ3S7ACI8wyCxeIE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=s8PiRf8+AxQkwQCyB3Yqipq/A5LvNr7vUHNnaGZ4JhKU0Q0x8v78tahjYlqCgTAHZ cXmDw3WAMPeWb7F4OSiWPpwxy7jXtPnS94kL+LQqFU4StQ4is/Wt4KVurSTZpObr4P IbP8OOaIQCeDsE4q/mCAlIaD6SFJCmf35QVOKblQ= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Emmanuel Grumbach , Miri Korenblit , Johannes Berg , Sasha Levin Subject: [PATCH 6.6 019/151] wifi: iwlwifi: mvm: dont add default link in fw restart flow Date: Wed, 6 Nov 2024 13:03:27 +0100 Message-ID: <20241106120309.366595327@linuxfoundation.org> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241106120308.841299741@linuxfoundation.org> References: <20241106120308.841299741@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Emmanuel Grumbach [ Upstream commit 734a377e1eacc5153bae0ccd4423365726876e93 ] When we add the vif (and its default link) in fw restart we may override the link that already exists. We take care of this but if link 0 is a valid MLO link, then we will re-create a default link on mvmvif->link[0] and we'll loose the real link we had there. In non-MLO, we need to re-create the default link upon the interface creation, this is fine. In MLO, we'll just wait for change_vif_links() to re-build the links. Fixes: bf976c814c86 ("wifi: iwlwifi: mvm: implement link change ops") Signed-off-by: Emmanuel Grumbach Signed-off-by: Miri Korenblit Link: https://patch.msgid.link/20241010140328.385bfea1b2e9.I4a127312285ccb529cc95cc4edf6fbe1e0a136ad@changeid Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin --- .../wireless/intel/iwlwifi/mvm/mld-mac80211.c | 24 ++++++++++++++----- 1 file changed, 18 insertions(+), 6 deletions(-) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mld-mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mld-mac80211.c index 4d9a872818a52..d05a800cbdb4c 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mld-mac80211.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mld-mac80211.c @@ -39,8 +39,6 @@ static int iwl_mvm_mld_mac_add_interface(struct ieee80211_hw *hw, /* reset deflink MLO parameters */ mvmvif->deflink.fw_link_id = IWL_MVM_FW_LINK_ID_INVALID; mvmvif->deflink.active = 0; - /* the first link always points to the default one */ - mvmvif->link[0] = &mvmvif->deflink; ret = iwl_mvm_mld_mac_ctxt_add(mvm, vif); if (ret) @@ -58,9 +56,19 @@ static int iwl_mvm_mld_mac_add_interface(struct ieee80211_hw *hw, IEEE80211_VIF_SUPPORTS_CQM_RSSI; } - ret = iwl_mvm_add_link(mvm, vif, &vif->bss_conf); - if (ret) - goto out_free_bf; + /* We want link[0] to point to the default link, unless we have MLO and + * in this case this will be modified later by .change_vif_links() + * If we are in the restart flow with an MLD connection, we will wait + * to .change_vif_links() to setup the links. + */ + if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) || + !ieee80211_vif_is_mld(vif)) { + mvmvif->link[0] = &mvmvif->deflink; + + ret = iwl_mvm_add_link(mvm, vif, &vif->bss_conf); + if (ret) + goto out_free_bf; + } /* Save a pointer to p2p device vif, so it can later be used to * update the p2p device MAC when a GO is started/stopped @@ -1015,7 +1023,11 @@ iwl_mvm_mld_change_vif_links(struct ieee80211_hw *hw, mutex_lock(&mvm->mutex); - if (old_links == 0) { + /* If we're in RESTART flow, the default link wasn't added in + * drv_add_interface(), and link[0] doesn't point to it. + */ + if (old_links == 0 && !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, + &mvm->status)) { err = iwl_mvm_disable_link(mvm, vif, &vif->bss_conf); if (err) goto out_err; -- 2.43.0