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check if eth rx packet is overflow

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This commit is contained in:
sakumisu
2024-05-03 19:19:17 +08:00
parent 7ebcafe158
commit ae5a9d1e57
5 changed files with 29 additions and 9 deletions
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20
class/cdc/usbh_cdc_ncm.c
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@@ -10,16 +10,16 @@
#define USB_DBG_TAG "usbh_cdc_ncm"
#include "usb_log.h"
#define DEV_FORMAT "/dev/cdc_ncm"
#define DEV_FORMAT "/dev/cdc_ncm"
/* general descriptor field offsets */
#define DESC_bLength 0 /** Length offset */
#define DESC_bDescriptorType 1 /** Descriptor type offset */
#define DESC_bDescriptorSubType 2 /** Descriptor subtype offset */
#define DESC_bLength 0 /** Length offset */
#define DESC_bDescriptorType 1 /** Descriptor type offset */
#define DESC_bDescriptorSubType 2 /** Descriptor subtype offset */
/* interface descriptor field offsets */
#define INTF_DESC_bInterfaceNumber 2 /** Interface number offset */
#define INTF_DESC_bAlternateSetting 3 /** Alternate setting offset */
#define INTF_DESC_bInterfaceNumber 2 /** Interface number offset */
#define INTF_DESC_bAlternateSetting 3 /** Alternate setting offset */
#define CONFIG_USBHOST_CDC_NCM_ETH_MAX_SEGSZE 1514U
@@ -279,7 +279,7 @@ find_class:
g_cdc_ncm_rx_length = 0;
while (1) {
usbh_bulk_urb_fill(&g_cdc_ncm_class.bulkin_urb, g_cdc_ncm_class.hport, g_cdc_ncm_class.bulkin, &g_cdc_ncm_rx_buffer[g_cdc_ncm_rx_length], USB_GET_MAXPACKETSIZE(g_cdc_ncm_class.bulkin->wMaxPacketSize), USB_OSAL_WAITING_FOREVER, NULL, NULL);
usbh_bulk_urb_fill(&g_cdc_ncm_class.bulkin_urb, g_cdc_ncm_class.hport, g_cdc_ncm_class.bulkin, &g_cdc_ncm_rx_buffer[g_cdc_ncm_rx_length], CONFIG_USBHOST_CDC_NCM_ETH_MAX_RX_SIZE, USB_OSAL_WAITING_FOREVER, NULL, NULL);
ret = usbh_submit_urb(&g_cdc_ncm_class.bulkin_urb);
if (ret < 0) {
goto find_class;
@@ -287,7 +287,7 @@ find_class:
g_cdc_ncm_rx_length += g_cdc_ncm_class.bulkin_urb.actual_length;
if (g_cdc_ncm_class.bulkin_urb.actual_length != USB_GET_MAXPACKETSIZE(g_cdc_ncm_class.bulkin->wMaxPacketSize)) {
if (g_cdc_ncm_rx_length % USB_GET_MAXPACKETSIZE(g_cdc_ncm_class.bulkin->wMaxPacketSize)) {
USB_LOG_DBG("rxlen:%d\r\n", g_cdc_ncm_rx_length);
struct cdc_ncm_nth16 *nth16 = (struct cdc_ncm_nth16 *)&g_cdc_ncm_rx_buffer[0];
@@ -331,6 +331,10 @@ find_class:
g_cdc_ncm_rx_length = 0;
} else {
if (g_cdc_ncm_rx_length > CONFIG_USBHOST_CDC_NCM_ETH_MAX_RX_SIZE) {
USB_LOG_ERR("Rx packet is overflow\r\n");
g_cdc_ncm_rx_length = 0;
}
}
}
// clang-format off