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Commit 700a1204 authored by Vulupala Shashank Reddy's avatar Vulupala Shashank Reddy Committed by Gerrit - the friendly Code Review server
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qcacmn: Add support to include ACK status for mon interface 

Extend radiotap header to append ACK status for packets sent to
virtual mon interface.

Change-Id: I2f57f7dbf1efdb44185fc9a1383c2d0c3a795f99
CRs-Fixed: 2538423
parent 7b0707fe

qdf/inc/qdf_nbuf.h

+5 −1
Original line number Diff line number Diff line 
/*

 * Copyright (c) 2014-2018 The Linux Foundation. All rights reserved.

 * Copyright (c) 2014-2019 The Linux Foundation. All rights reserved.

 *

 * Permission to use, copy, modify, and/or distribute this software for

 * any purpose with or without fee is hereby granted, provided that the
@@ -155,6 +155,8 @@ 
 * @sgi: Rx frame short guard interval

 * @ldpc: ldpc enabled

 * @beamformed: Is frame beamformed.

 * @tx_status: Status of Tx frame

 * @add_rtap_ext: Bool to add extension to radiotap header

 */

struct mon_rx_status {

	uint64_t tsft;
@@ -179,6 +181,8 @@ struct mon_rx_status { 
	uint8_t  sgi;

	uint8_t  ldpc;

	uint8_t  beamformed;

	uint8_t  tx_status;

	bool add_rtap_ext;

};



/* DHCP Related Mask */

qdf/linux/src/qdf_nbuf.c

+32 −3
Original line number Diff line number Diff line 
/*

 * Copyright (c) 2014-2018 The Linux Foundation. All rights reserved.

 * Copyright (c) 2014-2019 The Linux Foundation. All rights reserved.

 *

 * Permission to use, copy, modify, and/or distribute this software for

 * any purpose with or without fee is hereby granted, provided that the
@@ -3417,13 +3417,23 @@ static unsigned int qdf_nbuf_update_radiotap_vht_flags( 


#define NORMALIZED_TO_NOISE_FLOOR (-96)



#define IEEE80211_RADIOTAP_TX_STATUS 0



/* This is Radio Tap Header Extension Length.

 * 4 Bytes for Extended it_present bit map +

 * 4 bytes padding for alignment

 */

#define RADIOTAP_HEADER_EXT_LEN (2 * sizeof(uint32_t))



/* This is the length for radiotap, combined length

 * (Mandatory part struct ieee80211_radiotap_header + RADIOTAP_HEADER_LEN)

 * (Mandatory part struct ieee80211_radiotap_header +

 *  RADIOTAP_HEADER_LEN + RADIOTAP_HEADER_EXT_LEN)

 * cannot be more than available headroom_sz.

 * Max size current radiotap we are populating is less than 100 bytes,

 * increase this when we add more radiotap elements.

 */

#define RADIOTAP_HEADER_LEN (sizeof(struct ieee80211_radiotap_header) + 100)

#define RADIOTAP_HEADER_LEN (sizeof(struct ieee80211_radiotap_header) + \

						RADIOTAP_HEADER_EXT_LEN + 100)



/**

 * qdf_nbuf_update_radiotap() - Update radiotap header from rx_status
@@ -3441,6 +3451,13 @@ unsigned int qdf_nbuf_update_radiotap(struct mon_rx_status *rx_status, 
		(struct ieee80211_radiotap_header *)rtap_buf;

	uint32_t rtap_hdr_len = sizeof(struct ieee80211_radiotap_header);

	uint32_t rtap_len = rtap_hdr_len;

	uint32_t *rtap_ext = NULL;



	/* Adding Extended Header space */

	if (rx_status->add_rtap_ext) {

		rtap_hdr_len += RADIOTAP_HEADER_EXT_LEN;

		rtap_len = rtap_hdr_len;

	}



	/* IEEE80211_RADIOTAP_TSFT              __le64       microseconds*/

	rthdr->it_present = cpu_to_le32(1 << IEEE80211_RADIOTAP_TSFT);
@@ -3510,6 +3527,18 @@ unsigned int qdf_nbuf_update_radiotap(struct mon_rx_status *rx_status, 
							      rtap_buf,

							      rtap_len);

	}



	/* Add Extension to Radiotap Header & corresponding data */

	if (rx_status->add_rtap_ext) {

		rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_EXT);

		rtap_ext = (uint32_t *)&rthdr->it_present;

		rtap_ext++;

		*rtap_ext = cpu_to_le32(1 << IEEE80211_RADIOTAP_TX_STATUS);



		rtap_buf[rtap_len] = rx_status->tx_status;

		rtap_len += 1;

	}



	rthdr->it_len = cpu_to_le16(rtap_len);



	if (headroom_sz < rtap_len) {