diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2017-06-19 13:24:49 +0200 |
|---|---|---|
| committer | Luca Coelho <luciano.coelho@intel.com> | 2017-06-29 20:30:01 +0300 |
| commit | 275896ab5fbffcbe9d148ec054efe1af3fb4a29d (patch) | |
| tree | d1d28b994da4536a57ffd321972ce45a000fb188 /drivers/net/wireless | |
| parent | c42ff65da8167fa486bfcb7ea290cbdee8350aa7 (diff) | |
iwlwifi: mvm: properly enable IP header checksumming
The code was intended to enable IP header checksumming on AMSDUs, but
failed to really do so because the A-MSDU bit was set after all the
checksumming bits, and thus checking for A-MSDU could never be true.
Fix this by setting the A-MSDU bit before the offload bits.
Fixes: 5e6a98dc4863 ("iwlwifi: mvm: enable TCP/UDP checksum support for 9000 family")
Reported-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Diffstat (limited to 'drivers/net/wireless')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/tx.c | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/tx.c b/drivers/net/wireless/intel/iwlwifi/mvm/tx.c index 214829e5a860..419d0351e0ef 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/tx.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/tx.c @@ -105,9 +105,9 @@ iwl_mvm_bar_check_trigger(struct iwl_mvm *mvm, const u8 *addr, static u16 iwl_mvm_tx_csum(struct iwl_mvm *mvm, struct sk_buff *skb, struct ieee80211_hdr *hdr, - struct ieee80211_tx_info *info) + struct ieee80211_tx_info *info, + u16 offload_assist) { - u16 offload_assist = 0; #if IS_ENABLED(CONFIG_INET) u16 mh_len = ieee80211_hdrlen(hdr->frame_control); u8 protocol = 0; @@ -207,6 +207,7 @@ void iwl_mvm_set_tx_cmd(struct iwl_mvm *mvm, struct sk_buff *skb, __le16 fc = hdr->frame_control; u32 tx_flags = le32_to_cpu(tx_cmd->tx_flags); u32 len = skb->len + FCS_LEN; + u16 offload_assist = 0; u8 ac; if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) @@ -225,8 +226,7 @@ void iwl_mvm_set_tx_cmd(struct iwl_mvm *mvm, struct sk_buff *skb, tx_cmd->tid_tspec = qc[0] & 0xf; tx_flags &= ~TX_CMD_FLG_SEQ_CTL; if (*qc & IEEE80211_QOS_CTL_A_MSDU_PRESENT) - tx_cmd->offload_assist |= - cpu_to_le16(BIT(TX_CMD_OFFLD_AMSDU)); + offload_assist |= BIT(TX_CMD_OFFLD_AMSDU); } else if (ieee80211_is_back_req(fc)) { struct ieee80211_bar *bar = (void *)skb->data; u16 control = le16_to_cpu(bar->control); @@ -291,11 +291,12 @@ void iwl_mvm_set_tx_cmd(struct iwl_mvm *mvm, struct sk_buff *skb, /* padding is inserted later in transport */ if (ieee80211_hdrlen(fc) % 4 && - !(tx_cmd->offload_assist & cpu_to_le16(BIT(TX_CMD_OFFLD_AMSDU)))) - tx_cmd->offload_assist |= cpu_to_le16(BIT(TX_CMD_OFFLD_PAD)); + !(offload_assist & BIT(TX_CMD_OFFLD_AMSDU))) + offload_assist |= BIT(TX_CMD_OFFLD_PAD); tx_cmd->offload_assist |= - cpu_to_le16(iwl_mvm_tx_csum(mvm, skb, hdr, info)); + cpu_to_le16(iwl_mvm_tx_csum(mvm, skb, hdr, info, + offload_assist)); } static u32 iwl_mvm_get_tx_rate(struct iwl_mvm *mvm, @@ -481,7 +482,7 @@ iwl_mvm_set_tx_params(struct iwl_mvm *mvm, struct sk_buff *skb, if (iwl_mvm_has_new_tx_api(mvm)) { struct iwl_tx_cmd_gen2 *cmd = (void *)dev_cmd->payload; - u16 offload_assist = iwl_mvm_tx_csum(mvm, skb, hdr, info); + u16 offload_assist = 0; if (ieee80211_is_data_qos(hdr->frame_control)) { u8 *qc = ieee80211_get_qos_ctl(hdr); @@ -490,6 +491,9 @@ iwl_mvm_set_tx_params(struct iwl_mvm *mvm, struct sk_buff *skb, offload_assist |= BIT(TX_CMD_OFFLD_AMSDU); } + offload_assist = iwl_mvm_tx_csum(mvm, skb, hdr, info, + offload_assist); + /* padding is inserted later in transport */ if (ieee80211_hdrlen(hdr->frame_control) % 4 && !(offload_assist & BIT(TX_CMD_OFFLD_AMSDU))) |