From a2ac0f48a07c2b4272ced5886221e3954e7dfc0c Mon Sep 17 00:00:00 2001 From: Luca Coelho Date: Sun, 31 Jan 2021 20:22:07 +0200 Subject: [PATCH] iwlwifi: mvm: implement approved list for the PPAG feature We should only allow PPAG to be enabled by OEMs that are in the approved list. In order to do this, we need to compare the system vendor string retrieved from SMBIOS to a list maintained in the driver. If the vendor string is not in the list, we don't allow PPAG to be used. For now the list is empty, but entries will be added to it individually, in subsequent patches. Signed-off-by: Luca Coelho Link: https://lore.kernel.org/r/iwlwifi.20210131201908.c9d35b7d8748.I4e4cf61d8fa6ff91d9b0cab2b1ec9ede4be346f5@changeid Signed-off-by: Luca Coelho --- drivers/net/wireless/intel/iwlwifi/mvm/fw.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c index 9f8751ceb45b2..e29f2d310fb61 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c @@ -6,6 +6,7 @@ */ #include #include +#include #include "iwl-trans.h" #include "iwl-op-mode.h" @@ -1043,6 +1044,9 @@ int iwl_mvm_ppag_send_cmd(struct iwl_mvm *mvm) return ret; } +static const struct dmi_system_id dmi_ppag_approved_list[] = { +}; + static int iwl_mvm_ppag_init(struct iwl_mvm *mvm) { int ret; @@ -1054,6 +1058,15 @@ static int iwl_mvm_ppag_init(struct iwl_mvm *mvm) ret); return 0; } + + if (!dmi_check_system(dmi_ppag_approved_list)) { + IWL_DEBUG_RADIO(mvm, + "System vendor '%s' is not in the approved list, disabling PPAG.\n", + dmi_get_system_info(DMI_SYS_VENDOR)); + mvm->fwrt.ppag_table.v1.enabled = cpu_to_le32(0); + return 0; + } + return iwl_mvm_ppag_send_cmd(mvm); }