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iwlwifi: mvm: utilize the frame release infrastructure

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The firmware will send frame release notification in order
to release "stuck" frames on a queue where no more frames
arrive on.
Upon receiving the message the driver shall indicate the frames
up to the NSSN.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
This commit is contained in:
Sara Sharon 2016-02-28 15:41:47 +02:00 committed by Luca Coelho
parent 0690405fef
commit a338384bb3
3 changed files with 34 additions and 5 deletions
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2
drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
View File

@ -1304,7 +1304,7 @@ void iwl_mvm_rx_rx_mpdu(struct iwl_mvm *mvm, struct napi_struct *napi,
void iwl_mvm_rx_phy_cmd_mq(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi,
struct iwl_rx_cmd_buffer *rxb, int queue);
void iwl_mvm_rx_frame_release(struct iwl_mvm *mvm,
void iwl_mvm_rx_frame_release(struct iwl_mvm *mvm, struct napi_struct *napi,
struct iwl_rx_cmd_buffer *rxb, int queue);
int iwl_mvm_notify_rx_queue(struct iwl_mvm *mvm, u32 rxq_mask,
const u8 *data, u32 count);

4
drivers/net/wireless/intel/iwlwifi/mvm/ops.c
View File

@ -932,7 +932,7 @@ static void iwl_mvm_rx(struct iwl_op_mode *op_mode,
if (likely(pkt->hdr.cmd == REPLY_RX_MPDU_CMD))
iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
else if (pkt->hdr.cmd == FRAME_RELEASE)
iwl_mvm_rx_frame_release(mvm, rxb, 0);
iwl_mvm_rx_frame_release(mvm, napi, rxb, 0);
else if (pkt->hdr.cmd == REPLY_RX_PHY_CMD)
iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
else
@ -1634,7 +1634,7 @@ static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode,
struct iwl_rx_packet *pkt = rxb_addr(rxb);
if (unlikely(pkt->hdr.cmd == FRAME_RELEASE))
iwl_mvm_rx_frame_release(mvm, rxb, queue);
iwl_mvm_rx_frame_release(mvm, napi, rxb, queue);
else if (unlikely(pkt->hdr.cmd == RX_QUEUES_NOTIFICATION &&
pkt->hdr.group_id == DATA_PATH_GROUP))
iwl_mvm_rx_queue_notif(mvm, rxb, queue);

33
drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c
View File

@ -900,8 +900,37 @@ void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi,
rcu_read_unlock();
}
void iwl_mvm_rx_frame_release(struct iwl_mvm *mvm,
void iwl_mvm_rx_frame_release(struct iwl_mvm *mvm, struct napi_struct *napi,
struct iwl_rx_cmd_buffer *rxb, int queue)
{
/* TODO */
struct iwl_rx_packet *pkt = rxb_addr(rxb);
struct iwl_frame_release *release = (void *)pkt->data;
struct ieee80211_sta *sta;
struct iwl_mvm_reorder_buffer *reorder_buf;
struct iwl_mvm_baid_data *ba_data;
int baid = release->baid;
if (WARN_ON_ONCE(baid == IWL_RX_REORDER_DATA_INVALID_BAID))
return;
rcu_read_lock();
ba_data = rcu_dereference(mvm->baid_map[baid]);
if (WARN_ON_ONCE(!ba_data))
goto out;
sta = rcu_dereference(mvm->fw_id_to_mac_id[ba_data->sta_id]);
if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
goto out;
reorder_buf = &ba_data->reorder_buf[queue];
spin_lock_bh(&reorder_buf->lock);
iwl_mvm_release_frames(mvm, sta, napi, reorder_buf,
le16_to_cpu(release->nssn));
spin_unlock_bh(&reorder_buf->lock);
out:
rcu_read_unlock();
}