Hi Johannes, I love your patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v5.17-rc2 next-20220204] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Johannes-Berg/mac80211_hwsim-check-TX-and-STA-bandwidth/20220205-004233 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git dcb85f85fa6f142aae1fe86f399d4503d49f2b60 config: hexagon-randconfig-r041-20220204 (https://download.01.org/0day-ci/archive/20220205/202202050604.dzCxQjWk-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project a73e4ce6a59b01f0e37037761c1e6889d539d233) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/0day-ci/linux/commit/99f1c0b151e550eed22429c2eb48876108bf3de7 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Johannes-Berg/mac80211_hwsim-check-TX-and-STA-bandwidth/20220205-004233 git checkout 99f1c0b151e550eed22429c2eb48876108bf3de7 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/net/wireless/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/net/wireless/mac80211_hwsim.c:1631:26: warning: variable 'confbw' set but not used [-Wunused-but-set-variable] enum nl80211_chan_width confbw = NL80211_CHAN_WIDTH_20_NOHT; ^ 1 warning generated. vim +/confbw +1631 drivers/net/wireless/mac80211_hwsim.c 1620 1621 static void mac80211_hwsim_tx(struct ieee80211_hw *hw, 1622 struct ieee80211_tx_control *control, 1623 struct sk_buff *skb) 1624 { 1625 struct mac80211_hwsim_data *data = hw->priv; 1626 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb); 1627 struct ieee80211_hdr *hdr = (void *)skb->data; 1628 struct ieee80211_chanctx_conf *chanctx_conf; 1629 struct ieee80211_channel *channel; 1630 bool ack; > 1631 enum nl80211_chan_width confbw = NL80211_CHAN_WIDTH_20_NOHT; 1632 u32 _portid, i; 1633 1634 if (WARN_ON(skb->len < 10)) { 1635 /* Should not happen; just a sanity check for addr1 use */ 1636 ieee80211_free_txskb(hw, skb); 1637 return; 1638 } 1639 1640 if (!data->use_chanctx) { 1641 channel = data->channel; 1642 confbw = data->bw; 1643 } else if (txi->hw_queue == 4) { 1644 channel = data->tmp_chan; 1645 } else { 1646 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf); 1647 if (chanctx_conf) { 1648 channel = chanctx_conf->def.chan; 1649 confbw = chanctx_conf->def.width; 1650 } else { 1651 channel = NULL; 1652 } 1653 } 1654 1655 if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) { 1656 ieee80211_free_txskb(hw, skb); 1657 return; 1658 } 1659 1660 if (data->idle && !data->tmp_chan) { 1661 wiphy_dbg(hw->wiphy, "Trying to TX when idle - reject\n"); 1662 ieee80211_free_txskb(hw, skb); 1663 return; 1664 } 1665 1666 if (txi->control.vif) 1667 hwsim_check_magic(txi->control.vif); 1668 if (control->sta) 1669 hwsim_check_sta_magic(control->sta); 1670 1671 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) 1672 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb, 1673 txi->control.rates, 1674 ARRAY_SIZE(txi->control.rates)); 1675 1676 for (i = 0; i < ARRAY_SIZE(txi->control.rates); i++) { 1677 u16 rflags = txi->control.rates[i].flags; 1678 /* initialize to data->bw for 5/10 MHz handling */ 1679 enum nl80211_chan_width bw = data->bw; 1680 1681 if (txi->control.rates[i].idx == -1) 1682 break; 1683 1684 if (rflags & IEEE80211_TX_RC_40_MHZ_WIDTH) 1685 bw = NL80211_CHAN_WIDTH_40; 1686 else if (rflags & IEEE80211_TX_RC_80_MHZ_WIDTH) 1687 bw = NL80211_CHAN_WIDTH_80; 1688 else if (rflags & IEEE80211_TX_RC_160_MHZ_WIDTH) 1689 bw = NL80211_CHAN_WIDTH_160; 1690 1691 if (WARN_ON(hwsim_get_chanwidth(bw) > hwsim_get_chanwidth(data->bw))) 1692 return; 1693 } 1694 1695 if (skb->len >= 24 + 8 && 1696 ieee80211_is_probe_resp(hdr->frame_control)) { 1697 /* fake header transmission time */ 1698 struct ieee80211_mgmt *mgmt; 1699 struct ieee80211_rate *txrate; 1700 /* TODO: get MCS */ 1701 int bitrate = 100; 1702 u64 ts; 1703 1704 mgmt = (struct ieee80211_mgmt *)skb->data; 1705 txrate = ieee80211_get_tx_rate(hw, txi); 1706 if (txrate) 1707 bitrate = txrate->bitrate; 1708 ts = mac80211_hwsim_get_tsf_raw(); 1709 mgmt->u.probe_resp.timestamp = 1710 cpu_to_le64(ts + data->tsf_offset + 1711 24 * 8 * 10 / bitrate); 1712 } 1713 1714 mac80211_hwsim_monitor_rx(hw, skb, channel); 1715 1716 /* wmediumd mode check */ 1717 _portid = READ_ONCE(data->wmediumd); 1718 1719 if (_portid || hwsim_virtio_enabled) 1720 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid, channel); 1721 1722 /* NO wmediumd detected, perfect medium simulation */ 1723 data->tx_pkts++; 1724 data->tx_bytes += skb->len; 1725 ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel); 1726 1727 if (ack && skb->len >= 16) 1728 mac80211_hwsim_monitor_ack(channel, hdr->addr2); 1729 1730 ieee80211_tx_info_clear_status(txi); 1731 1732 /* frame was transmitted at most favorable rate at first attempt */ 1733 txi->control.rates[0].count = 1; 1734 txi->control.rates[1].idx = -1; 1735 1736 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack) 1737 txi->flags |= IEEE80211_TX_STAT_ACK; 1738 ieee80211_tx_status_irqsafe(hw, skb); 1739 } 1740 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
