iwlwifi: mvm: Enable Rx Checksum hw

TCP software implementation on the host requires extensive computing
power.  Offloading even some of the TCP/IP stack to the NIC might save
a significant overhead. In order to enable this feature on our hw,
we need to configure it first. Once done, we mark this capability,
to be advertised later to the OS via ieee80211_register_hw.
The driver Rx indications for TCP Checksum is integrated within the
standard Rx status. The driver responds to those indications as follows:
If the frame was tested by hw and checksum ok report CHECKSUM_UNNECESSARY.
Otherwise, report CHECKSUM_NONE.

Signed-off-by: Avri Altman <avri.altman@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>

diff --git a/drivers/net/wireless/iwlwifi/iwl-8000.c b/drivers/net/wireless/iwlwifi/iwl-8000.c
index 0de5751..7caea69 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-8000.c
+++ b/drivers/net/wireless/iwlwifi/iwl-8000.c
@@ -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,                                   \

diff --git a/drivers/net/wireless/iwlwifi/iwl-config.h b/drivers/net/wireless/iwlwifi/iwl-config.h
index 08c14af..939fa22 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-config.h
+++ b/drivers/net/wireless/iwlwifi/iwl-config.h
@@ -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;

diff --git a/drivers/net/wireless/iwlwifi/iwl-fw-file.h b/drivers/net/wireless/iwlwifi/iwl-fw-file.h
index 884825c..926e456 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-fw-file.h
+++ b/drivers/net/wireless/iwlwifi/iwl-fw-file.h
@@ -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,

diff --cc drivers/net/wireless/iwlwifi/iwl-prph.h
Simple merge

diff --cc drivers/net/wireless/iwlwifi/mvm/fw-api.h
Simple merge

diff --cc drivers/net/wireless/iwlwifi/mvm/fw.c
Simple merge

diff --cc drivers/net/wireless/iwlwifi/mvm/mac80211.c
Simple merge

diff --cc drivers/net/wireless/iwlwifi/mvm/mvm.h
Simple merge

diff --cc drivers/net/wireless/iwlwifi/mvm/rx.c
Simple merge