From: Miri Korenblit <miriam.rachel.korenblit@intel.com>
To: johannes@sipsolutions.net
Cc: linux-wireless@vger.kernel.org,
Daniel Gabay <daniel.gabay@intel.com>,
Johannes Berg <johannes.berg@intel.com>
Subject: [PATCH 01/15] wifi: iwlwifi: mvm: use correct address 3 in A-MSDU
Date: Mon, 5 Feb 2024 00:06:03 +0200 [thread overview]
Message-ID: <20240204235836.4583a1bf9188.I3f8e7892bdf8f86b4daa28453771a8c9817b2416@changeid> (raw)
In-Reply-To: <20240204220617.1456895-1-miriam.rachel.korenblit@intel.com>
From: Daniel Gabay <daniel.gabay@intel.com>
As described in IEEE sta 802.11-2020, table 9-30 (Address
field contents), A-MSDU address 3 should contain the BSSID
address.
In TX_CMD we copy the MAC header from skb, and skb address 3
holds the destination address, but it may not be identical to
the BSSID.
Using the wrong destination address appears to work with (most)
receivers without MLO, but in MLO some devices are checking for
it carefully, perhaps as a consequence of link to MLD address
translation.
Replace address 3 in the TX_CMD MAC header with the correct
address while retaining the skb address 3 unchanged.
This ensures that skb address 3 will be utilized later for
constructing the A-MSDU subframes.
Note that we fill in the MLD address, but the firmware will do the
necessary translation to link address after encryption.
Signed-off-by: Daniel Gabay <daniel.gabay@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
---
drivers/net/wireless/intel/iwlwifi/mvm/tx.c | 69 ++++++++++++++++++---
1 file changed, 59 insertions(+), 10 deletions(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/tx.c b/drivers/net/wireless/intel/iwlwifi/mvm/tx.c
index 79eb6394e5a7..ea1a4283f72b 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/tx.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/tx.c
@@ -545,13 +545,24 @@ static bool iwl_mvm_use_host_rate(struct iwl_mvm *mvm,
return mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_BZ;
}
+static void iwl_mvm_copy_hdr(void *cmd, const void *hdr, int hdrlen,
+ const u8 *addr3_override)
+{
+ struct ieee80211_hdr *out_hdr = cmd;
+
+ memcpy(cmd, hdr, hdrlen);
+ if (addr3_override)
+ memcpy(out_hdr->addr3, addr3_override, ETH_ALEN);
+}
+
/*
* Allocates and sets the Tx cmd the driver data pointers in the skb
*/
static struct iwl_device_tx_cmd *
iwl_mvm_set_tx_params(struct iwl_mvm *mvm, struct sk_buff *skb,
struct ieee80211_tx_info *info, int hdrlen,
- struct ieee80211_sta *sta, u8 sta_id)
+ struct ieee80211_sta *sta, u8 sta_id,
+ const u8 *addr3_override)
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
struct iwl_device_tx_cmd *dev_cmd;
@@ -609,7 +620,7 @@ iwl_mvm_set_tx_params(struct iwl_mvm *mvm, struct sk_buff *skb,
cmd->len = cpu_to_le16((u16)skb->len);
/* Copy MAC header from skb into command buffer */
- memcpy(cmd->hdr, hdr, hdrlen);
+ iwl_mvm_copy_hdr(cmd->hdr, hdr, hdrlen, addr3_override);
cmd->flags = cpu_to_le16(flags);
cmd->rate_n_flags = cpu_to_le32(rate_n_flags);
@@ -624,7 +635,7 @@ iwl_mvm_set_tx_params(struct iwl_mvm *mvm, struct sk_buff *skb,
cmd->len = cpu_to_le16((u16)skb->len);
/* Copy MAC header from skb into command buffer */
- memcpy(cmd->hdr, hdr, hdrlen);
+ iwl_mvm_copy_hdr(cmd->hdr, hdr, hdrlen, addr3_override);
cmd->flags = cpu_to_le32(flags);
cmd->rate_n_flags = cpu_to_le32(rate_n_flags);
@@ -642,7 +653,7 @@ iwl_mvm_set_tx_params(struct iwl_mvm *mvm, struct sk_buff *skb,
iwl_mvm_set_tx_cmd_rate(mvm, tx_cmd, info, sta, hdr->frame_control);
/* Copy MAC header from skb into command buffer */
- memcpy(tx_cmd->hdr, hdr, hdrlen);
+ iwl_mvm_copy_hdr(tx_cmd->hdr, hdr, hdrlen, addr3_override);
out:
return dev_cmd;
@@ -845,7 +856,8 @@ int iwl_mvm_tx_skb_non_sta(struct iwl_mvm *mvm, struct sk_buff *skb)
IWL_DEBUG_TX(mvm, "station Id %d, queue=%d\n", sta_id, queue);
- dev_cmd = iwl_mvm_set_tx_params(mvm, skb, &info, hdrlen, NULL, sta_id);
+ dev_cmd = iwl_mvm_set_tx_params(mvm, skb, &info, hdrlen, NULL, sta_id,
+ NULL);
if (!dev_cmd)
return -1;
@@ -1165,7 +1177,8 @@ static int iwl_mvm_tx_pkt_queued(struct iwl_mvm *mvm,
*/
static int iwl_mvm_tx_mpdu(struct iwl_mvm *mvm, struct sk_buff *skb,
struct ieee80211_tx_info *info,
- struct ieee80211_sta *sta)
+ struct ieee80211_sta *sta,
+ const u8 *addr3_override)
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
struct iwl_mvm_sta *mvmsta;
@@ -1197,7 +1210,8 @@ static int iwl_mvm_tx_mpdu(struct iwl_mvm *mvm, struct sk_buff *skb,
iwl_mvm_probe_resp_set_noa(mvm, skb);
dev_cmd = iwl_mvm_set_tx_params(mvm, skb, info, hdrlen,
- sta, mvmsta->deflink.sta_id);
+ sta, mvmsta->deflink.sta_id,
+ addr3_override);
if (!dev_cmd)
goto drop;
@@ -1319,9 +1333,11 @@ int iwl_mvm_tx_skb_sta(struct iwl_mvm *mvm, struct sk_buff *skb,
struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
struct ieee80211_tx_info info;
struct sk_buff_head mpdus_skbs;
+ struct ieee80211_vif *vif;
unsigned int payload_len;
int ret;
struct sk_buff *orig_skb = skb;
+ const u8 *addr3;
if (WARN_ON_ONCE(!mvmsta))
return -1;
@@ -1332,26 +1348,59 @@ int iwl_mvm_tx_skb_sta(struct iwl_mvm *mvm, struct sk_buff *skb,
memcpy(&info, skb->cb, sizeof(info));
if (!skb_is_gso(skb))
- return iwl_mvm_tx_mpdu(mvm, skb, &info, sta);
+ return iwl_mvm_tx_mpdu(mvm, skb, &info, sta, NULL);
payload_len = skb_tail_pointer(skb) - skb_transport_header(skb) -
tcp_hdrlen(skb) + skb->data_len;
if (payload_len <= skb_shinfo(skb)->gso_size)
- return iwl_mvm_tx_mpdu(mvm, skb, &info, sta);
+ return iwl_mvm_tx_mpdu(mvm, skb, &info, sta, NULL);
__skb_queue_head_init(&mpdus_skbs);
+ vif = info.control.vif;
+ if (!vif)
+ return -1;
+
ret = iwl_mvm_tx_tso(mvm, skb, &info, sta, &mpdus_skbs);
if (ret)
return ret;
WARN_ON(skb_queue_empty(&mpdus_skbs));
+ /*
+ * As described in IEEE sta 802.11-2020, table 9-30 (Address
+ * field contents), A-MSDU address 3 should contain the BSSID
+ * address.
+ * Pass address 3 down to iwl_mvm_tx_mpdu() and further to set it
+ * in the command header. We need to preserve the original
+ * address 3 in the skb header to correctly create all the
+ * A-MSDU subframe headers from it.
+ */
+ switch (vif->type) {
+ case NL80211_IFTYPE_STATION:
+ addr3 = vif->cfg.ap_addr;
+ break;
+ case NL80211_IFTYPE_AP:
+ addr3 = vif->addr;
+ break;
+ default:
+ addr3 = NULL;
+ break;
+ }
+
while (!skb_queue_empty(&mpdus_skbs)) {
+ struct ieee80211_hdr *hdr;
+ bool amsdu;
+
skb = __skb_dequeue(&mpdus_skbs);
+ hdr = (void *)skb->data;
+ amsdu = ieee80211_is_data_qos(hdr->frame_control) &&
+ (*ieee80211_get_qos_ctl(hdr) &
+ IEEE80211_QOS_CTL_A_MSDU_PRESENT);
- ret = iwl_mvm_tx_mpdu(mvm, skb, &info, sta);
+ ret = iwl_mvm_tx_mpdu(mvm, skb, &info, sta,
+ amsdu ? addr3 : NULL);
if (ret) {
/* Free skbs created as part of TSO logic that have not yet been dequeued */
__skb_queue_purge(&mpdus_skbs);
--
2.34.1
next prev parent reply other threads:[~2024-02-04 22:06 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-04 22:06 [PATCH 00/15] wifi: iwlwifi: updates - 2024-02-05 Miri Korenblit
2024-02-04 22:06 ` Miri Korenblit [this message]
2024-02-04 22:06 ` [PATCH 02/15] wifi: iwlwifi: add HONOR to PPAG approved list Miri Korenblit
2024-02-04 22:06 ` [PATCH 03/15] wifi: iwlwifi: pcie: don't allow hw-rfkill to stop device on gen2 Miri Korenblit
2024-02-04 22:06 ` [PATCH 04/15] wifi: iwlwifi: Add support for PPAG cmd v5 and PPAG revision 3 Miri Korenblit
2024-02-04 22:06 ` [PATCH 05/15] wifi: iwlwifi: mvm: const-ify chandef pointers Miri Korenblit
2024-02-04 22:06 ` [PATCH 06/15] wifi: iwlwifi: adjust rx_phyinfo debugfs to MLO Miri Korenblit
2024-02-04 22:06 ` [PATCH 07/15] wifi: iwlwifi: read mac step from aux register Miri Korenblit
2024-02-04 22:06 ` [PATCH 08/15] wifi: iwlwifi: mvm: remove EHT code from mac80211.c Miri Korenblit
2024-02-04 22:06 ` [PATCH 09/15] wifi: iwlwifi: use system_unbound_wq for debug dump Miri Korenblit
2024-02-04 22:06 ` [PATCH 10/15] wifi: iwlwifi: mvm: don't support reduced tx power on ack for new devices Miri Korenblit
2024-02-04 22:06 ` [PATCH 11/15] wifi: iwlwifi: support EHT for WH Miri Korenblit
2024-02-04 22:06 ` [PATCH 12/15] iwlwifi: mvm: advertise support for protected ranging negotiation Miri Korenblit
2024-02-06 10:18 ` Kalle Valo
2024-02-04 22:06 ` [PATCH 13/15] wifi: iwlwifi: mvm: Declare support for secure LTF measurement Miri Korenblit
2024-02-04 22:06 ` [PATCH 14/15] wifi: iwlwifi: clear link_id in time_event Miri Korenblit
2024-02-04 22:06 ` [PATCH 15/15] wifi: iwlwifi: mvm: remove one queue sync on BA session stop Miri Korenblit
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