Bluetooth: Classic: HFP: Fix fixed MTU issue #97683
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The MTU of HFP HF or AG is fixed value. It cannot be configured. Fix the issue to make the MTU of RFCOMM is consistency with the MTU of L2CAP. Signed-off-by: Lyle Zhu <[email protected]>
zephyrbot
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area: Bluetooth
area: Bluetooth Classic
zephyrbot
requested review from
MarkWangChinese,
chengkai15,
gzh-terry,
jhedberg and
makeshi
|
chengkai15
reviewed
Oct 16, 2025
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| #define BT_HFP_MAX_MTU 140 | ||
| #define BT_HFP_MAX_MTU (BT_L2CAP_RX_MTU - BT_RFCOMM_HDR_MAX_SIZE - BT_RFCOMM_FCS_SIZE) |
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do we need to consider TX direction? maybe it need to MAX(TX, RX)
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The MTU of rfcomm is same value for TX and RX.
makeshi
approved these changes
Oct 17, 2025
MarkWangChinese
approved these changes
Oct 17, 2025
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The MTU of HFP HF or AG is fixed value. It cannot be configured.
Fix the issue to make the MTU of RFCOMM is consistency with the MTU of L2CAP.