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lwip-contrib-mac
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ping app: restore original packet if packet is not eaten

This commit is contained in:
Simon Goldschmidt 2013-01-11 22:00:24 +01:00
parent acc69ff333
commit 346d2f8c8a
1 changed files with 3 additions and 1 deletions
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4
apps/ping/ping.c
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@ -237,7 +237,7 @@ ping_recv(void *arg, struct raw_pcb *pcb, struct pbuf *p, ip_addr_t *addr)
LWIP_ASSERT("p != NULL", p != NULL);
if ((p->tot_len >= (PBUF_IP_HLEN + sizeof(struct icmp_echo_hdr))) &&
pbuf_header( p, -PBUF_IP_HLEN) == 0) {
pbuf_header(p, -PBUF_IP_HLEN) == 0) {
iecho = (struct icmp_echo_hdr *)p->payload;
if ((iecho->id == PING_ID) && (iecho->seqno == htons(ping_seq_num))) {
@ -250,6 +250,8 @@ ping_recv(void *arg, struct raw_pcb *pcb, struct pbuf *p, ip_addr_t *addr)
pbuf_free(p);
return 1; /* eat the packet */
}
/* not eaten, restore original packet */
pbuf_header(p, PBUF_IP_HLEN);
}
return 0; /* don't eat the packet */