review cdc-ecm enum success but comunication error

1. review usbd_cdc_ecm_eth_tx send data fail
2. review CDC_ECM_DESCRIPTOR_INIT macro wMaxSegmentSize parameter error

2 files changed, 3 insertions, 5 deletions

diff --git a/class/cdc/usb_cdc.h b/class/cdc/usb_cdc.h
index b8a544f3..2bf0a17a 100644
--- a/class/cdc/usb_cdc.h
+++ b/class/cdc/usb_cdc.h
@@ -588,7 +588,7 @@ eth_statistics, wMaxSegmentSize, wNumberMCFilters, bNumberPowerFilters, str_idx)
     CDC_FUNC_DESC_ETHERNET_NETWORKING, /* Ethernet Networking functional descriptor subtype  */\
     str_idx,                                                    /* Device's MAC string index */\
     DBVAL_BE(eth_statistics),                                /* Ethernet statistics (bitmap) */\
-    WBVAL(wMaxPacketSize),/* wMaxSegmentSize: Ethernet Maximum Segment size, typically 1514 bytes */\
+    WBVAL(wMaxSegmentSize),/* wMaxSegmentSize: Ethernet Maximum Segment size, typically 1514 bytes */\
     WBVAL(wNumberMCFilters),            /* wNumberMCFilters: the number of multicast filters */\
     bNumberPowerFilters,          /* bNumberPowerFilters: the number of wakeup power filters */\
     0x07,                                                  /* bLength */                       \
diff --git a/class/cdc/usbd_cdc_ecm.c b/class/cdc/usbd_cdc_ecm.c
index 2e1e8664..b0c1217d 100644
--- a/class/cdc/usbd_cdc_ecm.c
+++ b/class/cdc/usbd_cdc_ecm.c
@@ -210,9 +210,7 @@ int usbd_cdc_ecm_eth_tx(struct pbuf *p)
         buffer += q->len;
     }
 
-    g_cdc_ecm_tx_data_length = p->tot_len;
-
-    return usbd_cdc_ecm_start_write(g_cdc_ecm_tx_buffer, g_cdc_ecm_tx_data_length);
+    return usbd_cdc_ecm_start_write(g_cdc_ecm_tx_buffer, p->tot_len);
 }
 #endif
 
@@ -244,4 +242,4 @@ void usbd_cdc_ecm_set_connect_speed(uint32_t speed[2])
 
 __WEAK void usbd_cdc_ecm_data_recv_done(uint8_t *buf, uint32_t len)
 {
-}
\ No newline at end of file
+}