@@ -154,6 +154,7 @@ static const struct iwl_tt_params iwl8000_tt_params = {
.led_mode = IWL_LED_RF_STATE, \
.nvm_hw_section_num = NVM_HW_SECTION_NUM_FAMILY_8000, \
.d0i3 = true, \
+ .features = NETIF_F_RXCSUM, \
.non_shared_ant = ANT_A, \
.dccm_offset = IWL8260_DCCM_OFFSET, \
.dccm_len = IWL8260_DCCM_LEN, \
@@ -297,6 +297,7 @@ struct iwl_pwr_tx_backoff {
* mode set
* @d0i3: device uses d0i3 instead of d3
* @nvm_hw_section_num: the ID of the HW NVM section
+ * @features: hw features, any combination of feature_whitelist
* @pwr_tx_backoffs: translation table between power limits and backoffs
* @max_rx_agg_size: max RX aggregation size of the ADDBA request/response
* @max_tx_agg_size: max TX aggregation size of the ADDBA request/response
@@ -348,6 +349,7 @@ struct iwl_cfg {
bool no_power_up_nic_in_init;
const char *default_nvm_file_B_step;
const char *default_nvm_file_C_step;
+ netdev_features_t features;
unsigned int max_rx_agg_size;
bool disable_dummy_notification;
unsigned int max_tx_agg_size;
@@ -297,6 +297,7 @@ typedef unsigned int __bitwise__ iwl_ucode_tlv_capa_t;
* @IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH: supports TDLS channel switching
* @IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT: supports Hot Spot Command
* @IWL_UCODE_TLV_CAPA_DC2DC_SUPPORT: supports DC2DC Command
+ * @IWL_UCODE_TLV_CAPA_CSUM_SUPPORT: supports TCP Checksum Offload
* @IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS: support radio and beacon statistics
* @IWL_UCODE_TLV_CAPA_BT_COEX_PLCR: enabled BT Coex packet level co-running
* @IWL_UCODE_TLV_CAPA_LAR_MULTI_MCC: ucode supports LAR updates with different
@@ -320,6 +321,7 @@ enum iwl_ucode_tlv_capa {
IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH = (__force iwl_ucode_tlv_capa_t)13,
IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT = (__force iwl_ucode_tlv_capa_t)18,
IWL_UCODE_TLV_CAPA_DC2DC_CONFIG_SUPPORT = (__force iwl_ucode_tlv_capa_t)19,
+ IWL_UCODE_TLV_CAPA_CSUM_SUPPORT = (__force iwl_ucode_tlv_capa_t)21,
IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS = (__force iwl_ucode_tlv_capa_t)22,
IWL_UCODE_TLV_CAPA_BT_COEX_PLCR = (__force iwl_ucode_tlv_capa_t)28,
IWL_UCODE_TLV_CAPA_LAR_MULTI_MCC = (__force iwl_ucode_tlv_capa_t)29,
@@ -292,6 +292,9 @@
/*********************** END TX SCHEDULER *************************************/
+/* tcp checksum offload */
+#define RX_EN_CSUM (0x00a00d88)
+
/* Oscillator clock */
#define OSC_CLK (0xa04068)
#define OSC_CLK_FORCE_CONTROL (0x8)
@@ -1085,10 +1085,33 @@ struct iwl_rx_phy_info {
__le16 frame_time;
} __packed;
+/*
+ * TCP offload Rx assist info
+ *
+ * bits 0:3 - reserved
+ * bits 4:7 - MIC CRC length
+ * bits 8:12 - MAC header length
+ * bit 13 - Padding indication
+ * bit 14 - A-AMSDU indication
+ * bit 15 - Offload enabled
+ */
+enum iwl_csum_rx_assist_info {
+ CSUM_RXA_RESERVED_MASK = 0x000f,
+ CSUM_RXA_MICSIZE_MASK = 0x00f0,
+ CSUM_RXA_HEADERLEN_MASK = 0x1f00,
+ CSUM_RXA_PADD = BIT(13),
+ CSUM_RXA_AMSDU = BIT(14),
+ CSUM_RXA_ENA = BIT(15)
+};
+
+/**
+ * struct iwl_rx_mpdu_res_start - phy info
+ * @assist: see CSUM_RX_ASSIST_ above
+ */
struct iwl_rx_mpdu_res_start {
__le16 byte_count;
- __le16 reserved;
-} __packed;
+ __le16 assist;
+} __packed; /* _RX_MPDU_RES_START_API_S_VER_2 */
/**
* enum iwl_rx_phy_flags - to parse %iwl_rx_phy_info phy_flags
@@ -1141,6 +1164,8 @@ enum iwl_rx_phy_flags {
* @RX_MPDU_RES_STATUS_EXT_IV_BIT_CMP:
* @RX_MPDU_RES_STATUS_KEY_ID_CMP_BIT:
* @RX_MPDU_RES_STATUS_ROBUST_MNG_FRAME: this frame is an 11w management frame
+ * @RX_MPDU_RES_STATUS_CSUM_DONE: checksum was done by the hw
+ * @RX_MPDU_RES_STATUS_CSUM_OK: checksum found no errors
* @RX_MPDU_RES_STATUS_HASH_INDEX_MSK:
* @RX_MPDU_RES_STATUS_STA_ID_MSK:
* @RX_MPDU_RES_STATUS_RRF_KILL:
@@ -1170,6 +1195,8 @@ enum iwl_mvm_rx_status {
RX_MPDU_RES_STATUS_EXT_IV_BIT_CMP = BIT(13),
RX_MPDU_RES_STATUS_KEY_ID_CMP_BIT = BIT(14),
RX_MPDU_RES_STATUS_ROBUST_MNG_FRAME = BIT(15),
+ RX_MPDU_RES_STATUS_CSUM_DONE = BIT(16),
+ RX_MPDU_RES_STATUS_CSUM_OK = BIT(17),
RX_MPDU_RES_STATUS_HASH_INDEX_MSK = (0x3F0000),
RX_MPDU_RES_STATUS_STA_ID_MSK = (0x1f000000),
RX_MPDU_RES_STATUS_RRF_KILL = BIT(29),
@@ -752,6 +752,10 @@ int iwl_mvm_up(struct iwl_mvm *mvm)
goto error;
}
+ if (iwl_mvm_is_csum_supported(mvm) &&
+ mvm->cfg->features & NETIF_F_RXCSUM)
+ iwl_trans_write_prph(mvm->trans, RX_EN_CSUM, 0x3);
+
/* allow FW/transport low power modes if not during restart */
if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
@@ -649,6 +649,10 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
}
+ hw->netdev_features |= mvm->cfg->features;
+ if (!iwl_mvm_is_csum_supported(mvm))
+ hw->netdev_features &= ~NETIF_F_RXCSUM;
+
ret = ieee80211_register_hw(mvm->hw);
if (ret)
iwl_mvm_leds_exit(mvm);
@@ -1651,6 +1655,8 @@ static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
goto out_unlock;
}
+ mvmvif->features |= hw->netdev_features;
+
ret = iwl_mvm_mac_ctxt_add(mvm, vif);
if (ret)
goto out_release;
@@ -357,6 +357,7 @@ struct iwl_mvm_vif_bf_data {
* # of received beacons accumulated over FW restart, and the current
* average signal of beacons retrieved from the firmware
* @csa_failed: CSA failed to schedule time event, report an error later
+ * @features: hw features active for this vif
*/
struct iwl_mvm_vif {
struct iwl_mvm *mvm;
@@ -437,6 +438,9 @@ struct iwl_mvm_vif {
/* Indicates that CSA countdown may be started */
bool csa_countdown;
bool csa_failed;
+
+ /* TCP Checksum Offload */
+ netdev_features_t features;
};
static inline struct iwl_mvm_vif *
@@ -943,6 +947,12 @@ static inline bool iwl_mvm_bt_is_rrc_supported(struct iwl_mvm *mvm)
IWL_MVM_BT_COEX_RRC;
}
+static inline bool iwl_mvm_is_csum_supported(struct iwl_mvm *mvm)
+{
+ return fw_has_capa(&mvm->fw->ucode_capa,
+ IWL_UCODE_TLV_CAPA_CSUM_SUPPORT);
+}
+
extern const u8 iwl_mvm_ac_to_tx_fifo[];
struct iwl_rate_info {
@@ -61,6 +61,7 @@
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*****************************************************************************/
+#include <linux/skbuff.h>
#include "iwl-trans.h"
#include "mvm.h"
#include "fw-api.h"
@@ -234,6 +235,19 @@ static u32 iwl_mvm_set_mac80211_rx_flag(struct iwl_mvm *mvm,
return 0;
}
+static void iwl_mvm_rx_csum(struct ieee80211_sta *sta,
+ struct sk_buff *skb,
+ u32 status)
+{
+ struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
+ struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
+
+ if (mvmvif->features & NETIF_F_RXCSUM &&
+ status & RX_MPDU_RES_STATUS_CSUM_DONE &&
+ status & RX_MPDU_RES_STATUS_CSUM_OK)
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+}
+
/*
* iwl_mvm_rx_rx_mpdu - REPLY_RX_MPDU_CMD handler
*
@@ -362,6 +376,9 @@ void iwl_mvm_rx_rx_mpdu(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
}
}
+ if (sta && ieee80211_is_data(hdr->frame_control))
+ iwl_mvm_rx_csum(sta, skb, rx_pkt_status);
+
rcu_read_unlock();
/* set the preamble flag if appropriate */