/**
* Send an icmp 'destination unreachable' packet, called from ip_input() if
* the transport layer protocol is unknown and from udp_input() if the local
* port is not bound.
*
* @param p the input packet for which the 'unreachable' should be sent,
* p->payload pointing to the IP header
* @param t type of the 'unreachable' packet
*/
void
icmp_dest_unreach(struct pbuf *p, enum icmp_dur_type t)
{
icmp_send_response(p, ICMP_DUR, t);
}
/**
* Send a 'time exceeded' packet, called from ip_forward() if TTL is 0.
*
* @param p the input packet for which the 'time exceeded' should be sent,
* p->payload pointing to the IP header
* @param t type of the 'time exceeded' packet
*/
void
icmp_time_exceeded(struct pbuf *p, enum icmp_te_type t)
{
icmp_send_response(p, ICMP_TE, t);
}
/**
* Send an icmp 'destination unreachable' packet, called from ip_input() if
* the transport layer protocol is unknown and from udp_input() if the local
* port is not bound.
*
* @param p the input packet for which the 'unreachable' should be sent,
* p->payload pointing to the IP header
* @param t type of the 'unreachable' packet
*/
void ICACHE_FLASH_ATTR
icmp_dest_unreach(struct pbuf *p, enum icmp_dur_type t)
{
icmp_send_response(p, ICMP_DUR, t);
}
/**
* Send a 'time exceeded' packet, called from ip_forward() if TTL is 0.
*
* @param p the input packet for which the 'time exceeded' should be sent,
* p->payload pointing to the IP header
* @param t type of the 'time exceeded' packet
*/
void ICACHE_FLASH_ATTR
icmp_time_exceeded(struct pbuf *p, enum icmp_te_type t)
{
icmp_send_response(p, ICMP_TE, t);
}
/**
* Send an icmp 'destination unreachable' packet, called from ip_input() if
* the transport layer protocol is unknown and from udp_input() if the local
* port is not bound.
*
* @param p the input packet for which the 'unreachable' should be sent,
* p->payload pointing to the IP header
* @param t type of the 'unreachable' packet
*/
void icmp_dest_unreach(PBUF *p, enum icmp_dur_type t)
{
icmp_send_response(p, ICMP_DUR, t);
}
/**
* Send a 'time exceeded' packet, called from ip_forward() if TTL is 0.
*
* @param p the input packet for which the 'time exceeded' should be sent,
* p->payload pointing to the IP header
* @param t type of the 'time exceeded' packet
*/
void icmp_time_exceeded(PBUF *p, enum icmp_te_type t)
{
icmp_send_response(p, ICMP_TE, t);
}
/**
* Send a 'time exceeded' packet, called from ip_forward() if TTL is 0.
*
* @param p the input packet for which the 'time exceeded' should be sent,
* p->payload pointing to the IP header
* @param t type of the 'time exceeded' packet
*/
void icmp_time_exceeded(struct pbuf *p, enum icmp_te_type t)
{
printf("Error: icmp_time_exceeded\n");
icmp_send_response(p, ICMP_TE, t);
}
/**
* Send an icmp 'destination unreachable' packet, called from ip_input() if
* the transport layer protocol is unknown and from udp_input() if the local
* port is not bound.
*
* @param p the input packet for which the 'unreachable' should be sent,
* p->payload pointing to the IP header
* @param t type of the 'unreachable' packet
*/
void icmp_dest_unreach(struct pbuf *p, enum icmp_dur_type t)
{
printf("Error: icmp_dest_unreach\n");
icmp_send_response(p, ICMP_DUR, t);
}
/* 发送一个数据报超时差错报文 */
void
icmp_time_exceeded(struct pbuf *p, enum icmp_te_type t)
{
/* ICMP_TE是ICMP报文的首部的类型字段 */
icmp_send_response(p, ICMP_TE, t);
}
/* 发送一个目的地址不可达差错报文
* pbuf是引起差错的报文
* t是要填写的ICMP报文首部的代码字段
*/
void
icmp_dest_unreach(struct pbuf *p, enum icmp_dur_type t)
{
/* ICMP_DUR是ICMP报文的首部的类型字段 */
icmp_send_response(p, ICMP_DUR, t);
}
/**
* Send an icmp 'destination unreachable' packet, called from ip_input() if
* the transport layer protocol is unknown and from udp_input() if the local
* port is not bound.
*
* @param p the input packet for which the 'unreachable' should be sent,
* p->payload pointing to the IP header
* @param t type of the 'unreachable' packet
*/
void
icmp_dest_unreach(struct pbuf *p, enum icmp_dur_type t)
{
LWIP_DEBUGF(ICMP_DEBUG, ("icmp_dest_unreach\n"));
icmp_send_response(p, ICMP_DUR, t);
}