From 315d80be304ac1d47da38c2b0c85286c9220c23a Mon Sep 17 00:00:00 2001 From: Aditya Kumar Singh Date: Tue, 4 Feb 2025 22:35:13 +0530 Subject: [PATCH] wifi: ath12k: allocate new links in change_vif_links() Currently, links in an interface are allocated during channel assignment via assign_vif_chanctx(). Conversely, links are deleted during channel unassignment via unassign_vif_chanctx(). However, deleting links during channel unassignment does not comply with mac80211 link handling. Therefore, this process should be managed within change_vif_links(). To maintain symmetry, link addition should also be handled in change_vif_links(). Hence, add changes to allocate link arvif in change_vif_links(). Creating the link interface on firmware will still be done during channel assignment. And since link will be created but channel might not be assigned, there is a need now to test is_created flag in ath12k_mac_mlo_get_vdev_args() before accessing link_conf or else link bring up will fail. A subsequent change will handle link removal part. Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1 Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00130-QCAHKSWPL_SILICONZ-1.97421.5 # Nicolas Escande Reviewed-by: Vasanthakumar Thiagarajan Signed-off-by: Aditya Kumar Singh Tested-by: Nicolas Escande Link: https://patch.msgid.link/20250204-unlink_link_arvif_from_chanctx-v2-7-764fb5973c1a@oss.qualcomm.com Signed-off-by: Jeff Johnson --- drivers/net/wireless/ath/ath12k/mac.c | 28 +++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c index 493d3d43b121d..156ea7a975d91 100644 --- a/drivers/net/wireless/ath/ath12k/mac.c +++ b/drivers/net/wireless/ath/ath12k/mac.c @@ -3601,6 +3601,31 @@ ath12k_mac_op_change_vif_links(struct ieee80211_hw *hw, u16 old_links, u16 new_links, struct ieee80211_bss_conf *ol[IEEE80211_MLD_MAX_NUM_LINKS]) { + struct ath12k_vif *ahvif = ath12k_vif_to_ahvif(vif); + unsigned long to_add = ~old_links & new_links; + struct ath12k_hw *ah = ath12k_hw_to_ah(hw); + struct ath12k_link_vif *arvif; + u8 link_id; + + lockdep_assert_wiphy(hw->wiphy); + + ath12k_generic_dbg(ATH12K_DBG_MAC, + "mac vif link changed for MLD %pM old_links 0x%x new_links 0x%x\n", + vif->addr, old_links, new_links); + + for_each_set_bit(link_id, &to_add, IEEE80211_MLD_MAX_NUM_LINKS) { + arvif = wiphy_dereference(hw->wiphy, ahvif->link[link_id]); + /* mac80211 wants to add link but driver already has the + * link. This should not happen ideally. + */ + if (WARN_ON(arvif)) + return -EINVAL; + + arvif = ath12k_mac_assign_link_vif(ah, vif, link_id); + if (WARN_ON(!arvif)) + return -EINVAL; + } + return 0; } @@ -8771,6 +8796,9 @@ ath12k_mac_mlo_get_vdev_args(struct ath12k_link_vif *arvif, if (arvif == arvif_p) continue; + if (!arvif_p->is_created) + continue; + link_conf = wiphy_dereference(ahvif->ah->hw->wiphy, ahvif->vif->link_conf[arvif_p->link_id]); -- 2.50.1