TMS320C6748的LWIP接收过载的问题

程序会卡死在void sitaraif_rx_inthandler(struct netif *netif)函数中的：
do {
/* Get the pbuf pointer which is associated with the current bd */
pbuf = curr_bd->pbuf;

/* If the earlier pbuf ended, update the chain */
if(pbuf->next == NULL) {
pbuf->next = (struct pbuf*)(curr_bd->next)->pbuf;
}

len_to_alloc += pbuf->len;
/* Update the len and tot_len fields for the pbuf in the chain*/
pbuf->len = (curr_bd->bufoff_len) & 0xFFFF;
pbuf->tot_len = tot_len - ex_len ;

processed_bd = curr_bd;
ex_len += pbuf->len;
curr_bd = curr_bd->next;
} while((processed_bd->flags_pktlen & EMAC_BUF_DESC_EOP)
!= EMAC_BUF_DESC_EOP);

我这边测试了StarterWare中的enetLwip例子，使用其中的udp进行数据传输，也存在类似的问题，PC端下发八十多次就会过程，发的速度也是很慢的，100ms发一个字节的包。下面附加中是测试例程中的代码。

0066.emac.rar