avdtp: wait for L2CAP Disconnect Rsp before CLOSING->IDLE Delay CLOSING->IDLE until remote acknowledges L2CAP channel closure. It is not explicitly stated in AVDTP v1.3 Sec. 6.13, but some devices refuse commands sent immediately after L2CAP Disconnect Req, so wait until Rsp. Fails: > ACL Data RX: Handle 6 flags 0x02 dlen 6 Channel: 64 len 2 [PSM 25 mode Basic (0x00)] {chan 0} AVDTP: Close (0x08) Response Accept (0x02) type 0x00 label 0 nosp 0 < ACL Data TX: Handle 6 flags 0x00 dlen 12 L2CAP: Disconnection Request (0x06) ident 16 len 4 Destination CID: 65 Source CID: 65 < ACL Data TX: Handle 6 flags 0x00 dlen 22 Channel: 64 len 18 [PSM 25 mode Basic (0x00)] {chan 0} AVDTP: Set Configuration (0x03) Command (0x00) type 0x00 label 1 nosp 0 ACP SEID: 7 INT SEID: 1 Service Category: Media Transport (0x01) Service Category: Media Codec (0x07) Media Type: Audio (0x00) Media Codec: MPEG-2,4 AAC (0x02) Object Type: MPEG-4 AAC LC (0x40) Frequency: 44100 (0x100) Channels: 2 (0x04) Bitrate: 220000bps VBR: No Service Category: Delay Reporting (0x08) > ACL Data RX: Handle 6 flags 0x02 dlen 12 L2CAP: Disconnection Response (0x07) ident 16 len 4 Destination CID: 65 Source CID: 65 > ACL Data RX: Handle 6 flags 0x02 dlen 8 Channel: 64 len 4 [PSM 25 mode Basic (0x00)] {chan 0} AVDTP: Set Configuration (0x03) Response Reject (0x03) type 0x00 label 1 nosp 0 Service Category: Reserved (0x29) Error code: UNSUPPORTED_CONFIGURATION (0x29) Works: > ACL Data RX: Handle 4 flags 0x02 dlen 6 Channel: 64 len 2 [PSM 25 mode Basic (0x00)] {chan 0} AVDTP: Close (0x08) Response Accept (0x02) type 0x00 label 12 nosp 0 < ACL Data TX: Handle 4 flags 0x00 dlen 12 L2CAP: Disconnection Request (0x06) ident 16 len 4 Destination CID: 65 Source CID: 65 > ACL Data RX: Handle 4 flags 0x02 dlen 12 L2CAP: Disconnection Response (0x07) ident 16 len 4 Destination CID: 65 Source CID: 65 < ACL Data TX: Handle 4 flags 0x00 dlen 22 Channel: 64 len 18 [PSM 25 mode Basic (0x00)] {chan 0} AVDTP: Set Configuration (0x03) Command (0x00) type 0x00 label 13 nosp 0 ACP SEID: 9 INT SEID: 2 Service Category: Media Transport (0x01) Service Category: Media Codec (0x07) Media Type: Audio (0x00) Media Codec: MPEG-2,4 AAC (0x02) Object Type: MPEG-4 AAC LC (0x40) Frequency: 44100 (0x100) Channels: 2 (0x04) Bitrate: 220000bps VBR: No Service Category: Delay Reporting (0x08) > ACL Data RX: Handle 4 flags 0x02 dlen 6 Channel: 64 len 2 [PSM 25 mode Basic (0x00)] {chan 0} AVDTP: Set Configuration (0x03) Response Accept (0x02) type 0x00 label 13 nosp 0 Fixes: https://github.com/bluez/bluez/issues/1471 Fixes: aa118e965b ("a2dp: Don't wait to reconfigure")

Diffstat

1 files changed, 10 insertions(+), 1 deletions(-)