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Commit 5faa1aff authored by Nishant Sarmukadam's avatar Nishant Sarmukadam Committed by John W. Linville
Browse files

mwl8k: add support for block ack commands 



Signed-off-by: default avatarPradeep Nemavat <pnemavat@marvell.com>
Signed-off-by: default avatarBrian Cavagnolo <brian@cozybit.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 8a7a578c

drivers/net/wireless/mwl8k.c

+156 −0
Original line number Diff line number Diff line
@@ -135,6 +135,14 @@ struct mwl8k_tx_queue { 
	struct sk_buff **skb;

};



struct mwl8k_ampdu_stream {

	struct ieee80211_sta *sta;

	u8 tid;

	u8 state;

	u8 idx;

	u8 txq_idx; /* index of this stream in priv->txq */

};



struct mwl8k_priv {

	struct ieee80211_hw *hw;

	struct pci_dev *pdev;
@@ -360,6 +368,7 @@ static const struct ieee80211_rate mwl8k_rates_50[] = { 
#define MWL8K_CMD_SET_NEW_STN		0x1111		/* per-vif */

#define MWL8K_CMD_UPDATE_ENCRYPTION	0x1122		/* per-vif */

#define MWL8K_CMD_UPDATE_STADB		0x1123

#define MWL8K_CMD_BASTREAM		0x1125



static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)

{
@@ -399,6 +408,7 @@ static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize) 
		MWL8K_CMDNAME(SET_NEW_STN);

		MWL8K_CMDNAME(UPDATE_ENCRYPTION);

		MWL8K_CMDNAME(UPDATE_STADB);

		MWL8K_CMDNAME(BASTREAM);

	default:

		snprintf(buf, bufsize, "0x%x", cmd);

	}
@@ -3175,6 +3185,152 @@ static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw, 
	return rc;

}



/*

 * CMD_BASTREAM.

 */



/*

 * UPSTREAM is tx direction

 */

#define BASTREAM_FLAG_DIRECTION_UPSTREAM	0x00

#define BASTREAM_FLAG_IMMEDIATE_TYPE		0x01



enum {

	MWL8K_BA_CREATE,

	MWL8K_BA_UPDATE,

	MWL8K_BA_DESTROY,

	MWL8K_BA_FLUSH,

	MWL8K_BA_CHECK,

} ba_stream_action_type;





struct mwl8k_create_ba_stream {

	__le32	flags;

	__le32	idle_thrs;

	__le32	bar_thrs;

	__le32	window_size;

	u8	peer_mac_addr[6];

	u8	dialog_token;

	u8	tid;

	u8	queue_id;

	u8	param_info;

	__le32	ba_context;

	u8	reset_seq_no_flag;

	__le16	curr_seq_no;

	u8	sta_src_mac_addr[6];

} __packed;



struct mwl8k_destroy_ba_stream {

	__le32	flags;

	__le32	ba_context;

} __packed;



struct mwl8k_cmd_bastream {

	struct mwl8k_cmd_pkt	header;

	__le32	action;

	union {

		struct mwl8k_create_ba_stream	create_params;

		struct mwl8k_destroy_ba_stream	destroy_params;

	};

} __packed;



static int

mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)

{

	struct mwl8k_cmd_bastream *cmd;

	int rc;



	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);

	if (cmd == NULL)

		return -ENOMEM;



	cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);

	cmd->header.length = cpu_to_le16(sizeof(*cmd));



	cmd->action = cpu_to_le32(MWL8K_BA_CHECK);



	cmd->create_params.queue_id = stream->idx;

	memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr,

	       ETH_ALEN);

	cmd->create_params.tid = stream->tid;



	cmd->create_params.flags =

		cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) |

		cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM);



	rc = mwl8k_post_cmd(hw, &cmd->header);



	kfree(cmd);



	return rc;

}



static int

mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,

		u8 buf_size)

{

	struct mwl8k_cmd_bastream *cmd;

	int rc;



	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);

	if (cmd == NULL)

		return -ENOMEM;





	cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);

	cmd->header.length = cpu_to_le16(sizeof(*cmd));



	cmd->action = cpu_to_le32(MWL8K_BA_CREATE);



	cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size);

	cmd->create_params.window_size = cpu_to_le32((u32)buf_size);

	cmd->create_params.queue_id = stream->idx;



	memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN);

	cmd->create_params.tid = stream->tid;

	cmd->create_params.curr_seq_no = cpu_to_le16(0);

	cmd->create_params.reset_seq_no_flag = 1;



	cmd->create_params.param_info =

		(stream->sta->ht_cap.ampdu_factor &

		 IEEE80211_HT_AMPDU_PARM_FACTOR) |

		((stream->sta->ht_cap.ampdu_density << 2) &

		 IEEE80211_HT_AMPDU_PARM_DENSITY);



	cmd->create_params.flags =

		cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE |

					BASTREAM_FLAG_DIRECTION_UPSTREAM);



	rc = mwl8k_post_cmd(hw, &cmd->header);



	wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n",

		stream->sta->addr, stream->tid);

	kfree(cmd);



	return rc;

}



static void mwl8k_destroy_ba(struct ieee80211_hw *hw,

			     struct mwl8k_ampdu_stream *stream)

{

	struct mwl8k_cmd_bastream *cmd;



	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);

	if (cmd == NULL)

		return;



	cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);

	cmd->header.length = cpu_to_le16(sizeof(*cmd));

	cmd->action = cpu_to_le32(MWL8K_BA_DESTROY);



	cmd->destroy_params.ba_context = cpu_to_le32(stream->idx);

	mwl8k_post_cmd(hw, &cmd->header);



	wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", stream->idx);



	kfree(cmd);

}



/*

 * CMD_SET_NEW_STN.

 */