From: Sara Sharon sara.sharon@intel.com
[ Upstream commit 7126b6f2bbdf8e25f85e7ca6d91d49ea4ce9f6a6 ]
Current FIFO size calculation is wrong for two reasons: - We access lmac 0 by default - We don't take 11ax into consideration. Fix both.
Signed-off-by: Sara Sharon sara.sharon@intel.com Signed-off-by: Luca Coelho luciano.coelho@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- .../net/wireless/intel/iwlwifi/mvm/mac-ctxt.c | 4 ++ drivers/net/wireless/intel/iwlwifi/mvm/tx.c | 47 +++++++++++++------ 2 files changed, 36 insertions(+), 15 deletions(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c index b3fd20502abb3..d90d58309bf0e 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c @@ -85,6 +85,10 @@ const u8 iwl_mvm_ac_to_gen2_tx_fifo[] = { IWL_GEN2_EDCA_TX_FIFO_VI, IWL_GEN2_EDCA_TX_FIFO_BE, IWL_GEN2_EDCA_TX_FIFO_BK, + IWL_GEN2_TRIG_TX_FIFO_VO, + IWL_GEN2_TRIG_TX_FIFO_VI, + IWL_GEN2_TRIG_TX_FIFO_BE, + IWL_GEN2_TRIG_TX_FIFO_BK, };
struct iwl_mvm_mac_iface_iterator_data { diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/tx.c b/drivers/net/wireless/intel/iwlwifi/mvm/tx.c index cb2e52e7f46c9..449e3d32811a6 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/tx.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/tx.c @@ -778,6 +778,36 @@ iwl_mvm_tx_tso_segment(struct sk_buff *skb, unsigned int num_subframes, return 0; }
+static unsigned int iwl_mvm_max_amsdu_size(struct iwl_mvm *mvm, + struct ieee80211_sta *sta, + unsigned int tid) +{ + struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); + enum nl80211_band band = mvmsta->vif->bss_conf.chandef.chan->band; + u8 ac = tid_to_mac80211_ac[tid]; + unsigned int txf; + int lmac = IWL_LMAC_24G_INDEX; + + if (iwl_mvm_is_cdb_supported(mvm) && + band == NL80211_BAND_5GHZ) + lmac = IWL_LMAC_5G_INDEX; + + /* For HE redirect to trigger based fifos */ + if (sta->he_cap.has_he && !WARN_ON(!iwl_mvm_has_new_tx_api(mvm))) + ac += 4; + + txf = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac); + + /* + * Don't send an AMSDU that will be longer than the TXF. + * Add a security margin of 256 for the TX command + headers. + * We also want to have the start of the next packet inside the + * fifo to be able to send bursts. + */ + return min_t(unsigned int, mvmsta->max_amsdu_len, + mvm->fwrt.smem_cfg.lmac[lmac].txfifo_size[txf] - 256); +} + static int iwl_mvm_tx_tso(struct iwl_mvm *mvm, struct sk_buff *skb, struct ieee80211_tx_info *info, struct ieee80211_sta *sta, @@ -790,7 +820,7 @@ static int iwl_mvm_tx_tso(struct iwl_mvm *mvm, struct sk_buff *skb, u16 snap_ip_tcp, pad; unsigned int dbg_max_amsdu_len; netdev_features_t netdev_flags = NETIF_F_CSUM_MASK | NETIF_F_SG; - u8 tid, txf; + u8 tid;
snap_ip_tcp = 8 + skb_transport_header(skb) - skb_network_header(skb) + tcp_hdrlen(skb); @@ -829,20 +859,7 @@ static int iwl_mvm_tx_tso(struct iwl_mvm *mvm, struct sk_buff *skb, !(mvmsta->amsdu_enabled & BIT(tid))) return iwl_mvm_tx_tso_segment(skb, 1, netdev_flags, mpdus_skb);
- max_amsdu_len = mvmsta->max_amsdu_len; - - /* the Tx FIFO to which this A-MSDU will be routed */ - txf = iwl_mvm_mac_ac_to_tx_fifo(mvm, tid_to_mac80211_ac[tid]); - - /* - * Don't send an AMSDU that will be longer than the TXF. - * Add a security margin of 256 for the TX command + headers. - * We also want to have the start of the next packet inside the - * fifo to be able to send bursts. - */ - max_amsdu_len = min_t(unsigned int, max_amsdu_len, - mvm->fwrt.smem_cfg.lmac[0].txfifo_size[txf] - - 256); + max_amsdu_len = iwl_mvm_max_amsdu_size(mvm, sta, tid);
if (unlikely(dbg_max_amsdu_len)) max_amsdu_len = min_t(unsigned int, max_amsdu_len,