diff options
Diffstat (limited to 'package/kernel/mac80211/patches/subsys')
| -rw-r--r-- | package/kernel/mac80211/patches/subsys/354-mac80211-fix-overwriting-of-qos_ctrl.tid-field.patch | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/subsys/354-mac80211-fix-overwriting-of-qos_ctrl.tid-field.patch b/package/kernel/mac80211/patches/subsys/354-mac80211-fix-overwriting-of-qos_ctrl.tid-field.patch new file mode 100644 index 0000000000..02d2581106 --- /dev/null +++ b/package/kernel/mac80211/patches/subsys/354-mac80211-fix-overwriting-of-qos_ctrl.tid-field.patch @@ -0,0 +1,45 @@ +commit 753ffad3d6243303994227854d951ff5c70fa9e0 +Author: Fredrik Olofsson <fredrik.olofsson@anyfinetworks.com> +Date: Tue Nov 19 14:34:51 2019 +0100 + + mac80211: fix TID field in monitor mode transmit + + Fix overwriting of the qos_ctrl.tid field for encrypted frames injected on + a monitor interface. While qos_ctrl.tid is not encrypted, it's used as an + input into the encryption algorithm so it's protected, and thus cannot be + modified after encryption. For injected frames, the encryption may already + have been done in userspace, so we cannot change any fields. + + Before passing the frame to the driver, the qos_ctrl.tid field is updated + from skb->priority. Prior to dbd50a851c50 skb->priority was updated in + ieee80211_select_queue_80211(), but this function is no longer always + called. + + Update skb->priority in ieee80211_monitor_start_xmit() so that the value + is stored, and when later code 'modifies' the TID it really sets it to + the same value as before, preserving the encryption. + + Fixes: dbd50a851c50 ("mac80211: only allocate one queue when using iTXQs") + Signed-off-by: Fredrik Olofsson <fredrik.olofsson@anyfinetworks.com> + Link: https://lore.kernel.org/r/20191119133451.14711-1-fredrik.olofsson@anyfinetworks.com + [rewrite commit message based on our discussion] + Signed-off-by: Johannes Berg <johannes.berg@intel.com> + +--- a/net/mac80211/tx.c ++++ b/net/mac80211/tx.c +@@ -2269,6 +2269,15 @@ netdev_tx_t ieee80211_monitor_start_xmit + payload[7]); + } + ++ /* ++ * Initialize skb->priority for QoS frames. This is put in the TID field ++ * of the frame before passing it to the driver. ++ */ ++ if (ieee80211_is_data_qos(hdr->frame_control)) { ++ u8 *p = ieee80211_get_qos_ctl(hdr); ++ skb->priority = *p & IEEE80211_QOS_CTL_TAG1D_MASK; ++ } ++ + memset(info, 0, sizeof(*info)); + + info->flags = IEEE80211_TX_CTL_REQ_TX_STATUS | |