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Bluetooth: Controller: Limit maximum ACL Tx buffer size to 251 octets

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Limit the maximum ACL Tx buffer size to 251 octets due to
implementation restricted use of uint8_t for PDU len field,
also used as the Tx buffer size data type.

Signed-off-by: Vinayak Kariappa Chettimada <vich@nordicsemi.no>
This commit is contained in:
Vinayak Kariappa Chettimada 2021-11-19 12:44:18 +05:30 • committed by Carles Cufí
commit f216915638
3 changed files with 13 additions and 7 deletions
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6
subsys/bluetooth/controller/hci/hci.c
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@ -1286,7 +1286,7 @@ static void le_read_buffer_size(struct net_buf *buf, struct net_buf **evt)
rp->status = 0x00;
rp->le_max_len = sys_cpu_to_le16(CONFIG_BT_BUF_ACL_TX_SIZE);
rp->le_max_len = sys_cpu_to_le16(LL_LENGTH_OCTETS_TX_MAX);
rp->le_max_num = CONFIG_BT_BUF_ACL_TX_COUNT;
}
@ -1299,7 +1299,7 @@ static void le_read_buffer_size_v2(struct net_buf *buf, struct net_buf **evt)
rp->status = 0x00;
rp->acl_max_len = sys_cpu_to_le16(CONFIG_BT_BUF_ACL_TX_SIZE);
rp->acl_max_len = sys_cpu_to_le16(LL_LENGTH_OCTETS_TX_MAX);
rp->acl_max_num = CONFIG_BT_BUF_ACL_TX_COUNT;
rp->iso_max_len = sys_cpu_to_le16(CONFIG_BT_CTLR_ISO_TX_BUFFER_SIZE);
rp->iso_max_num = CONFIG_BT_CTLR_ISO_TX_BUFFERS;
@ -4774,7 +4774,7 @@ int hci_acl_handle(struct net_buf *buf, struct net_buf **evt)
return -EINVAL;
}
if (len > CONFIG_BT_BUF_ACL_TX_SIZE) {
if (len > LL_LENGTH_OCTETS_TX_MAX) {
BT_ERR("Invalid HCI ACL Data length");
return -EINVAL;
}