cregit-Linux how code gets into the kernel

Release 4.11 drivers/net/wireless/ti/wlcore/tx.h

/*
 * This file is part of wl1271
 *
 * Copyright (C) 1998-2009 Texas Instruments. All rights reserved.
 * Copyright (C) 2009 Nokia Corporation
 *
 * Contact: Luciano Coelho <luciano.coelho@nokia.com>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 *
 */

#ifndef __TX_H__

#define __TX_H__


#define TX_HW_MGMT_PKT_LIFETIME_TU       2000

#define TX_HW_AP_MODE_PKT_LIFETIME_TU    8000


#define TX_HW_ATTR_SAVE_RETRIES          BIT(0)

#define TX_HW_ATTR_HEADER_PAD            BIT(1)

#define TX_HW_ATTR_SESSION_COUNTER       (BIT(2) | BIT(3) | BIT(4))

#define TX_HW_ATTR_RATE_POLICY           (BIT(5) | BIT(6) | BIT(7) | \
                                          BIT(8) | BIT(9))

#define TX_HW_ATTR_LAST_WORD_PAD         (BIT(10) | BIT(11))

#define TX_HW_ATTR_TX_CMPLT_REQ          BIT(12)

#define TX_HW_ATTR_TX_DUMMY_REQ          BIT(13)

#define TX_HW_ATTR_HOST_ENCRYPT          BIT(14)

#define TX_HW_ATTR_EAPOL_FRAME           BIT(15)


#define TX_HW_ATTR_OFST_SAVE_RETRIES     0

#define TX_HW_ATTR_OFST_HEADER_PAD       1

#define TX_HW_ATTR_OFST_SESSION_COUNTER  2

#define TX_HW_ATTR_OFST_RATE_POLICY      5

#define TX_HW_ATTR_OFST_LAST_WORD_PAD    10

#define TX_HW_ATTR_OFST_TX_CMPLT_REQ     12


#define TX_HW_RESULT_QUEUE_LEN           16

#define TX_HW_RESULT_QUEUE_LEN_MASK      0xf


#define WL1271_TX_ALIGN_TO 4

#define WL1271_EXTRA_SPACE_TKIP 4

#define WL1271_EXTRA_SPACE_AES  8

#define WL1271_EXTRA_SPACE_MAX  8

/* Used for management frames and dummy packets */

#define WL1271_TID_MGMT 7

/* stop a ROC for pending authentication reply after this time (ms) */

#define WLCORE_PEND_AUTH_ROC_TIMEOUT     1000


struct wl127x_tx_mem {
	/*
         * Number of extra memory blocks to allocate for this packet
         * in addition to the number of blocks derived from the packet
         * length.
         */
	
u8 extra_blocks;
	/*
         * Total number of memory blocks allocated by the host for
         * this packet. Must be equal or greater than the actual
         * blocks number allocated by HW.
         */
	
u8 total_mem_blocks;
} 
__packed;


struct wl128x_tx_mem {
	/*
         * Total number of memory blocks allocated by the host for
         * this packet.
         */
	
u8 total_mem_blocks;
	/*
         * Number of extra bytes, at the end of the frame. the host
         * uses this padding to complete each frame to integer number
         * of SDIO blocks.
         */
	
u8 extra_bytes;
} 
__packed;


struct wl18xx_tx_mem {
	/*
         * Total number of memory blocks allocated by the host for
         * this packet.
         */
	
u8 total_mem_blocks;

	/*
         * control bits
         */
	
u8 ctrl;
} 
__packed;

/*
 * On wl128x based devices, when TX packets are aggregated, each packet
 * size must be aligned to the SDIO block size. The maximum block size
 * is bounded by the type of the padded bytes field that is sent to the
 * FW. Currently the type is u8, so the maximum block size is 256 bytes.
 */

#define WL12XX_BUS_BLOCK_SIZE min(512u,       \
            (1u << (8 * sizeof(((struct wl128x_tx_mem *) 0)->extra_bytes))))


struct wl1271_tx_hw_descr {
	/* Length of packet in words, including descriptor+header+data */
	
__le16 length;
	union {
		
struct wl127x_tx_mem wl127x_mem;
		
struct wl128x_tx_mem wl128x_mem;
		
struct wl18xx_tx_mem wl18xx_mem;
	} 
__packed;
	/* Device time (in us) when the packet arrived to the driver */
	
__le32 start_time;
	/*
         * Max delay in TUs until transmission. The last device time the
         * packet can be transmitted is: start_time + (1024 * life_time)
         */
	
__le16 life_time;
	/* Bitwise fields - see TX_ATTR... definitions above. */
	
__le16 tx_attr;
	/* Packet identifier used also in the Tx-Result. */
	
u8 id;
	/* The packet TID value (as User-Priority) */
	
u8 tid;
	/* host link ID (HLID) */
	
u8 hlid;

	union {
		
u8 wl12xx_reserved;

		/*
                 * bit 0   -> 0 = udp, 1 = tcp
                 * bit 1:7 -> IP header offset
                 */
		
u8 wl18xx_checksum_data;
	} 
__packed;
} 
__packed;


enum wl1271_tx_hw_res_status {
	
TX_SUCCESS          = 0,
	
TX_HW_ERROR         = 1,
	
TX_DISABLED         = 2,
	
TX_RETRY_EXCEEDED   = 3,
	
TX_TIMEOUT          = 4,
	
TX_KEY_NOT_FOUND    = 5,
	
TX_PEER_NOT_FOUND   = 6,
	
TX_SESSION_MISMATCH = 7,
	
TX_LINK_NOT_VALID   = 8,
};


struct wl1271_tx_hw_res_descr {
	/* Packet Identifier - same value used in the Tx descriptor.*/
	
u8 id;
	/* The status of the transmission, indicating success or one of
           several possible reasons for failure. */
	
u8 status;
	/* Total air access duration including all retrys and overheads.*/
	
__le16 medium_usage;
	/* The time passed from host xfer to Tx-complete.*/
	
__le32 fw_handling_time;
	/* Total media delay
           (from 1st EDCA AIFS counter until TX Complete). */
	
__le32 medium_delay;
	/* LS-byte of last TKIP seq-num (saved per AC for recovery). */
	
u8 tx_security_sequence_number_lsb;
	/* Retry count - number of transmissions without successful ACK.*/
	
u8 ack_failures;
	/* The rate that succeeded getting ACK
           (Valid only if status=SUCCESS). */
	
u8 rate_class_index;
	/* for 4-byte alignment. */
	
u8 spare;
} 
__packed;


struct wl1271_tx_hw_res_if {
	
__le32 tx_result_fw_counter;
	
__le32 tx_result_host_counter;
	
struct wl1271_tx_hw_res_descr tx_results_queue[TX_HW_RESULT_QUEUE_LEN];
} 
__packed;


enum wlcore_queue_stop_reason {
	
WLCORE_QUEUE_STOP_REASON_WATERMARK,
	
WLCORE_QUEUE_STOP_REASON_FW_RESTART,
	
WLCORE_QUEUE_STOP_REASON_FLUSH,
	
WLCORE_QUEUE_STOP_REASON_SPARE_BLK, /* 18xx specific */
};


static inline int wl1271_tx_get_queue(int queue) { switch (queue) { case 0: return CONF_TX_AC_VO; case 1: return CONF_TX_AC_VI; case 2: return CONF_TX_AC_BE; case 3: return CONF_TX_AC_BK; default: return CONF_TX_AC_BE; } }

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static inline int wlcore_tx_get_mac80211_queue(struct wl12xx_vif *wlvif, int queue) { int mac_queue = wlvif->hw_queue_base; switch (queue) { case CONF_TX_AC_VO: return mac_queue + 0; case CONF_TX_AC_VI: return mac_queue + 1; case CONF_TX_AC_BE: return mac_queue + 2; case CONF_TX_AC_BK: return mac_queue + 3; default: return mac_queue + 2; } }

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Arik Nemtsov66100.00%2100.00%
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static inline int wl1271_tx_total_queue_count(struct wl1271 *wl) { int i, count = 0; for (i = 0; i < NUM_TX_QUEUES; i++) count += wl->tx_queue_count[i]; return count; }

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Arik Nemtsov44100.00%1100.00%
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void wl1271_tx_work(struct work_struct *work); int wlcore_tx_work_locked(struct wl1271 *wl); int wlcore_tx_complete(struct wl1271 *wl); void wl12xx_tx_reset_wlvif(struct wl1271 *wl, struct wl12xx_vif *wlvif); void wl12xx_tx_reset(struct wl1271 *wl); void wl1271_tx_flush(struct wl1271 *wl); u8 wlcore_rate_to_idx(struct wl1271 *wl, u8 rate, enum nl80211_band band); u32 wl1271_tx_enabled_rates_get(struct wl1271 *wl, u32 rate_set, enum nl80211_band rate_band); u32 wl1271_tx_min_rate_get(struct wl1271 *wl, u32 rate_set); u8 wl12xx_tx_get_hlid(struct wl1271 *wl, struct wl12xx_vif *wlvif, struct sk_buff *skb, struct ieee80211_sta *sta); void wl1271_tx_reset_link_queues(struct wl1271 *wl, u8 hlid); void wl1271_handle_tx_low_watermark(struct wl1271 *wl); bool wl12xx_is_dummy_packet(struct wl1271 *wl, struct sk_buff *skb); void wl12xx_rearm_rx_streaming(struct wl1271 *wl, unsigned long *active_hlids); unsigned int wlcore_calc_packet_alignment(struct wl1271 *wl, unsigned int packet_length); void wl1271_free_tx_id(struct wl1271 *wl, int id); void wlcore_stop_queue_locked(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 queue, enum wlcore_queue_stop_reason reason); void wlcore_stop_queue(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 queue, enum wlcore_queue_stop_reason reason); void wlcore_wake_queue(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 queue, enum wlcore_queue_stop_reason reason); void wlcore_stop_queues(struct wl1271 *wl, enum wlcore_queue_stop_reason reason); void wlcore_wake_queues(struct wl1271 *wl, enum wlcore_queue_stop_reason reason); bool wlcore_is_queue_stopped_by_reason(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 queue, enum wlcore_queue_stop_reason reason); bool wlcore_is_queue_stopped_by_reason_locked(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 queue, enum wlcore_queue_stop_reason reason); bool wlcore_is_queue_stopped_locked(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 queue); /* from main.c */ void wl1271_free_sta(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 hlid); void wl12xx_rearm_tx_watchdog_locked(struct wl1271 *wl); #endif

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PersonTokensPropCommitsCommitProp
Arik Nemtsov41948.33%2041.67%
Luciano Coelho22425.84%24.17%
Eliad Peller738.42%918.75%
Shahar Levi515.88%36.25%
Kalle Valo445.07%12.08%
Juuso Oikarinen252.88%36.25%
Ido Yariv161.85%48.33%
Igal Chernobelsky40.46%12.08%
Eric Dumazet30.35%12.08%
Teemu Paasikivi30.35%12.08%
Ido Reis20.23%12.08%
Johannes Berg20.23%12.08%
Oz Krakowski10.12%12.08%
Total867100.00%48100.00%
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