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Merge pull request #18108 from benpicco/drivers/dose-rxbuf

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drivers/dose: make RX buffer size configurable
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benpicco 2022-08-02 10:51:17 +02:00 committed by GitHub
commit e1e99c3bf1
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2 changed files with 18 additions and 2 deletions
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9
drivers/dose/dose.c
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@ -632,6 +632,15 @@ static int _get(netdev_t *dev, netopt_t opt, void *value, size_t max_len)
*((netopt_enable_t *)value) = NETOPT_DISABLE;
}
return sizeof(netopt_enable_t);
case NETOPT_MAX_PDU_SIZE:
if (CONFIG_DOSE_RX_BUF_LEN < (ETHERNET_FRAME_LEN + DOSE_FRAME_CRC_LEN)) {
if (max_len < sizeof(uint16_t)) {
return -EINVAL;
}
*((uint16_t *)value) = CONFIG_DOSE_RX_BUF_LEN - DOSE_FRAME_CRC_LEN;
return sizeof(uint16_t);
}
/* fall-through */
default:
return netdev_eth_get(dev, opt, value, max_len);
}

11
drivers/include/dose.h
View File

@ -160,7 +160,14 @@ typedef enum {
/** @} */
#define DOSE_FRAME_CRC_LEN (2) /**< CRC16 is used */
#define DOSE_FRAME_LEN (ETHERNET_FRAME_LEN + DOSE_FRAME_CRC_LEN) /**< dose frame length */
/**
* @brief DOSE RX buffer length
* Should be large enough to fit at least one Ethernet frame
*/
#ifndef CONFIG_DOSE_RX_BUF_LEN
#define CONFIG_DOSE_RX_BUF_LEN (ETHERNET_FRAME_LEN + DOSE_FRAME_CRC_LEN)
#endif
/**
* @brief Hardware timer to use with the `dose_watchdog` module.
@ -182,7 +189,7 @@ typedef struct {
uint8_t opts; /**< Driver options */
dose_state_t state; /**< Current state of the driver's state machine */
mutex_t state_mtx; /**< Is unlocked every time a state is (re)entered */
uint8_t recv_buf[DOSE_FRAME_LEN]; /**< Receive buffer for incoming frames */
uint8_t recv_buf[CONFIG_DOSE_RX_BUF_LEN]; /**< Receive buffer for incoming frames */
chunk_ringbuf_t rb; /**< Ringbuffer to store received frames. */
/* Written to from interrupts (with irq_disable */
/* to prevent any simultaneous writes), */