5a4fdfbf3e
`net_buf_alloc(K_FOREVER)` can now return NULL if running in the system workqueue. `bt_hci_evt_create()` is called in that context in a few cases. Since we can't really do anything about it, add a (default-on) assert. This should ideally never fail. I saw it fail because of a leak in the ACL buffer pool, which is also shared with events when host flow control is not enabled. In that particular case, the host is rendered non-functional, so trying to recover using error handling is futile. Signed-off-by: Jonathan Rico <jonathan.rico@nordicsemi.no>
56 lines
1.1 KiB
C
56 lines
1.1 KiB
C
/*
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* Copyright (c) 2020 Nordic Semiconductor ASA
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <stdint.h>
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#include <zephyr/sys/byteorder.h>
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#include <zephyr/drivers/bluetooth/hci_driver.h>
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#include "common/assert.h"
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struct net_buf *bt_hci_evt_create(uint8_t evt, uint8_t len)
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{
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struct bt_hci_evt_hdr *hdr;
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struct net_buf *buf;
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buf = bt_buf_get_evt(evt, false, K_FOREVER);
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BT_ASSERT(buf);
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hdr = net_buf_add(buf, sizeof(*hdr));
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hdr->evt = evt;
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hdr->len = len;
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return buf;
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}
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struct net_buf *bt_hci_cmd_complete_create(uint16_t op, uint8_t plen)
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{
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struct net_buf *buf;
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struct bt_hci_evt_cmd_complete *cc;
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buf = bt_hci_evt_create(BT_HCI_EVT_CMD_COMPLETE, sizeof(*cc) + plen);
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cc = net_buf_add(buf, sizeof(*cc));
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cc->ncmd = 1U;
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cc->opcode = sys_cpu_to_le16(op);
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return buf;
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}
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struct net_buf *bt_hci_cmd_status_create(uint16_t op, uint8_t status)
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{
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struct net_buf *buf;
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struct bt_hci_evt_cmd_status *cs;
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buf = bt_hci_evt_create(BT_HCI_EVT_CMD_STATUS, sizeof(*cs));
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cs = net_buf_add(buf, sizeof(*cs));
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cs->status = status;
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cs->ncmd = 1U;
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cs->opcode = sys_cpu_to_le16(op);
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return buf;
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}
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