本文整理汇总了C++中ICMPH_TYPE_SET函数的典型用法代码示例。如果您正苦于以下问题：C++ ICMPH_TYPE_SET函数的具体用法？C++ ICMPH_TYPE_SET怎么用？C++ ICMPH_TYPE_SET使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了ICMPH_TYPE_SET函数的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。
示例1: icmp_dest_unreach
/*-----------------------------------------------------------------------------------*/
void
icmp_dest_unreach(struct pbuf *p, enum icmp_dur_type t)
{
struct pbuf *q;
struct ip_hdr *iphdr;
struct icmp_dur_hdr *idur;
q = pbuf_alloc(PBUF_TRANSPORT, 8 + IP_HLEN + 8, PBUF_RAM);
/* ICMP header + IP header + 8 bytes of data */
iphdr = p->payload;
idur = q->payload;
ICMPH_TYPE_SET(idur, ICMP_DUR);
ICMPH_CODE_SET(idur, t);
bcopy(p->payload, (char *)q->payload + 8, IP_HLEN + 8);
/* calculate checksum */
idur->chksum = 0;
idur->chksum = inet_chksum(idur, q->len);
#ifdef ICMP_STATS
++stats.icmp.xmit;
#endif /* ICMP_STATS */
sr_lwip_output(q,&(iphdr->dest), &(iphdr->src), IP_PROTO_ICMP);
pbuf_free(q);
}
开发者ID:dananjayamahesh，项目名称:netfpga，代码行数:29，代码来源:icmp.c
示例2: handle_ICMP_packet
bool handle_ICMP_packet(packet_info_t *pi) {
debug_println("Packet is ICMP");
byte *icmp_packet = pi->packet+IPV4_HEADER_OFFSET+IPV4_HEADER_LENGTH;
struct icmp_echo_hdr *icmp_hdr = (void *)pi->packet+IPV4_HEADER_OFFSET+IPV4_HEADER_LENGTH;
/*unsigned i;
for (i = 0; i < pi->len-IPV4_HEADER_OFFSET-IPV4_HEADER_LENGTH; i++)
printf("(%d %02X) ", i, (int)*(icmp_packet+i));
printf("\n");*/
if (calc_checksum(icmp_packet, pi->len-IPV4_HEADER_OFFSET-IPV4_HEADER_LENGTH)) {
debug_println("ICMP checksum failed, dropping packet!");
return 1;
}
uint8_t type = ICMPH_TYPE(icmp_hdr);
switch (type) {
case ICMP_TYPE_ECHO_REQUEST: ICMPH_TYPE_SET(icmp_hdr, 0);
break;
case ICMP_TYPE_ECHO_REPLY: handle_ping_reply(pi); return 1;
default: debug_println("Dropping packet: type %d unknown.", type); return 1;
}
ICMPH_CHKSUM_SET(icmp_hdr, 0);
ICMPH_CHKSUM_SET(icmp_hdr, htons(calc_checksum(icmp_packet, pi->len-IPV4_HEADER_OFFSET-IPV4_HEADER_LENGTH)));
/*for (i = 0; i < pi->len-IPV4_HEADER_OFFSET-IPV4_HEADER_LENGTH; i++)
printf("(%d %02X) ", i, (int)*(icmp_packet+i));
printf("\n");*/
return 0;
}
开发者ID:CharlieBashford，项目名称:P33，代码行数:30，代码来源:my_icmp.c
示例3: icmp_time_exceeded
/*-----------------------------------------------------------------------------------*/
void
icmp_time_exceeded(struct pbuf *p, enum icmp_te_type t)
{
struct pbuf *q;
struct ip_hdr *iphdr;
struct icmp_te_hdr *tehdr;
q = pbuf_alloc(PBUF_TRANSPORT, 8 + IP_HLEN + 8, PBUF_RAM);
iphdr = p->payload;
#if ICMP_DEBUG
DEBUGF(ICMP_DEBUG, ("icmp_time_exceeded from "));
ip_addr_debug_print(&(iphdr->src));
DEBUGF(ICMP_DEBUG, (" to "));
ip_addr_debug_print(&(iphdr->dest));
DEBUGF(ICMP_DEBUG, ("\n"));
#endif /* ICMP_DEBNUG */
tehdr = q->payload;
ICMPH_TYPE_SET(tehdr, ICMP_TE);
ICMPH_CODE_SET(tehdr, t);
/* copy fields from original packet */
bcopy((char *)p->payload, (char *)q->payload + 8, IP_HLEN + 8);
/* calculate checksum */
tehdr->chksum = 0;
tehdr->chksum = inet_chksum(tehdr, q->len);
#ifdef ICMP_STATS
++stats.icmp.xmit;
#endif /* ICMP_STATS */
sr_lwip_output(q, &(iphdr->dest), &(iphdr->src), IP_PROTO_ICMP);
pbuf_free(q);
}
开发者ID:dananjayamahesh，项目名称:netfpga，代码行数:35，代码来源:icmp.c
示例4: icmp_time_exceeded
void
icmp_time_exceeded(struct pbuf *p, enum icmp_te_type t)
{
struct pbuf *q;
struct ip_hdr *iphdr;
struct icmp_te_hdr *tehdr;
q = pbuf_alloc(PBUF_IP, 8 + IP_HLEN + 8, PBUF_RAM);
iphdr = p->payload;
LWIP_DEBUGF(ICMP_DEBUG, ("icmp_time_exceeded from "));
ip_addr_debug_print(ICMP_DEBUG, &(iphdr->src));
LWIP_DEBUGF(ICMP_DEBUG, (" to "));
ip_addr_debug_print(ICMP_DEBUG, &(iphdr->dest));
LWIP_DEBUGF(ICMP_DEBUG, ("\n"));
tehdr = q->payload;
ICMPH_TYPE_SET(tehdr, ICMP_TE);
ICMPH_CODE_SET(tehdr, t);
/* copy fields from original packet */
memcpy((u8_t *)q->payload + 8, (u8_t *)p->payload, IP_HLEN + 8);
/* calculate checksum */
tehdr->chksum = 0;
tehdr->chksum = inet_chksum(tehdr, q->len);
ICMP_STATS_INC(icmp.xmit);
/* increase number of messages attempted to send */
snmp_inc_icmpoutmsgs();
/* increase number of destination unreachable messages attempted to send */
snmp_inc_icmpouttimeexcds();
ip_output(q, NULL, &(iphdr->src),
ICMP_TTL, 0, IP_PROTO_ICMP);
pbuf_free(q);
}
开发者ID:Undrizzle，项目名称:yolanda，代码行数:35，代码来源:icmp.c
示例5: send_ping
void send_ping(router_t *router, addr_ip_t dest_ip, addr_ip_t src_ip, uint16_t id, uint16_t count) {
int len = IPV4_HEADER_LENGTH+8;
byte *payload = malloc_or_die(len*sizeof(byte)); //Free'd (below)
struct ip_hdr *iphdr = (void *)payload;
IPH_VHLTOS_SET(iphdr, 4, 5, 0);
IPH_LEN_SET(iphdr, htons(len));
IPH_ID_SET(iphdr, 0);
IPH_OFFSET_SET(iphdr, 0);
IPH_TTL_SET(iphdr, 64);
IPH_PROTO_SET(iphdr, 1);
iphdr->src.addr = src_ip;
iphdr->dest.addr = dest_ip;
IPH_CHKSUM_SET(iphdr, 0);
IPH_CHKSUM_SET(iphdr, htons(calc_checksum(payload, IPV4_HEADER_LENGTH)));
struct icmp_echo_hdr *pihdr = (void *)payload+IPV4_HEADER_LENGTH;
ICMPH_TYPE_SET(pihdr, ICMP_TYPE_ECHO_REQUEST);
ICMPH_CODE_SET(pihdr, 0);
pihdr->id = id;
pihdr->seqno = count;
ICMPH_CHKSUM_SET(pihdr, 0);
ICMPH_CHKSUM_SET(pihdr, htons(calc_checksum(payload+IPV4_HEADER_LENGTH, 8)));
send_packet(payload, src_ip, dest_ip, len, FALSE, FALSE);
free(payload);
}
开发者ID:CharlieBashford，项目名称:P33，代码行数:29，代码来源:my_icmp.c
示例6: icmp_dest_unreach
void
icmp_dest_unreach(struct pbuf *p, enum icmp_dur_type t)
{
struct pbuf *q;
struct ip_hdr *iphdr;
struct icmp_dur_hdr *idur;
q = pbuf_alloc(PBUF_IP, 8 + IP_HLEN + 8, PBUF_RAM);
/* ICMP header + IP header + 8 bytes of data */
iphdr = p->payload;
idur = q->payload;
ICMPH_TYPE_SET(idur, ICMP_DUR);
ICMPH_CODE_SET(idur, t);
memcpy((u8_t *)q->payload + 8, p->payload, IP_HLEN + 8);
/* calculate checksum */
idur->chksum = 0;
idur->chksum = inet_chksum(idur, q->len);
ICMP_STATS_INC(icmp.xmit);
/* increase number of messages attempted to send */
snmp_inc_icmpoutmsgs();
/* increase number of destination unreachable messages attempted to send */
snmp_inc_icmpoutdestunreachs();
ip_output(q, NULL, &(iphdr->src),
ICMP_TTL, 0, IP_PROTO_ICMP);
pbuf_free(q);
}
开发者ID:Undrizzle，项目名称:yolanda，代码行数:31，代码来源:icmp.c
示例7: __inetPingPrepare
/*********************************************************************************************************
** 函数名称: __inetPingPrepare
** 功能描述: 构造 ping 包
** 输 入 : icmphdrEcho 数据
** iDataSize 数据大小
** pusSeqRecv 需要判断的 seq
** 输 出 : NONE
** 全局变量:
** 调用模块:
*********************************************************************************************************/
static VOID __inetPingPrepare (struct icmp_echo_hdr *icmphdrEcho,
INT iDataSize, UINT16 *pusSeqRecv)
{
static u16_t usSeqNum = 1;
REGISTER INT i;
SYS_ARCH_DECL_PROTECT(x);
ICMPH_TYPE_SET(icmphdrEcho, ICMP_ECHO);
ICMPH_CODE_SET(icmphdrEcho, 0);
*pusSeqRecv = usSeqNum;
icmphdrEcho->chksum = 0;
icmphdrEcho->id = 0xAFAF; /* ID */
icmphdrEcho->seqno = htons(usSeqNum);
/*
* 填充数据
*/
for(i = 0; i < iDataSize; i++) {
((PCHAR)icmphdrEcho)[sizeof(struct icmp_echo_hdr) + i] = (CHAR)(i % 256);
}
#if CHECKSUM_GEN_ICMP
icmphdrEcho->chksum = inet_chksum(icmphdrEcho, (u16_t)(iDataSize + sizeof(struct icmp_echo_hdr)));
#endif /* CHECKSUM_GEN_ICMP */
SYS_ARCH_PROTECT(x);
usSeqNum++;
SYS_ARCH_UNPROTECT(x);
}
开发者ID:Ga-vin，项目名称:libsylixos，代码行数:42，代码来源:lwip_ping.c
示例8: ping_prepare_er
static void ICACHE_FLASH_ATTR
ping_prepare_er(struct icmp_echo_hdr *iecho, u16_t len)
{
ICMPH_TYPE_SET(iecho, ICMP_ER);
ICMPH_CODE_SET(iecho, 0);
iecho->chksum = 0;
iecho->chksum = inet_chksum(iecho, len);
}
开发者ID:piratfm，项目名称:esp8266-tag，代码行数:10，代码来源:ping.c
示例9: icmp_time_exceeded
/**
* 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)
{
struct pbuf *q;
struct ip_hdr *iphdr;
struct icmp_te_hdr *tehdr;
/* ICMP header + IP header + 8 bytes of data */
q = pbuf_alloc(PBUF_IP, sizeof(struct icmp_dur_hdr) + IP_HLEN + ICMP_DEST_UNREACH_DATASIZE,
PBUF_RAM);
if (q == NULL) {
LWIP_DEBUGF(ICMP_DEBUG, ("icmp_time_exceeded: failed to allocate pbuf for ICMP packet.\n"));
return;
}
LWIP_ASSERT("check that first pbuf can hold icmp message",
(q->len >= (sizeof(struct icmp_dur_hdr) + IP_HLEN + ICMP_DEST_UNREACH_DATASIZE)));
iphdr = p->payload;
LWIP_DEBUGF(ICMP_DEBUG, ("icmp_time_exceeded from "));
ip_addr_debug_print(ICMP_DEBUG, &(iphdr->src));
LWIP_DEBUGF(ICMP_DEBUG, (" to "));
ip_addr_debug_print(ICMP_DEBUG, &(iphdr->dest));
LWIP_DEBUGF(ICMP_DEBUG, ("\n"));
tehdr = q->payload;
ICMPH_TYPE_SET(tehdr, ICMP_TE);
ICMPH_CODE_SET(tehdr, t);
/* copy fields from original packet */
SMEMCPY((u8_t *)q->payload + sizeof(struct icmp_dur_hdr), (u8_t *)p->payload,
IP_HLEN + ICMP_DEST_UNREACH_DATASIZE);
/* calculate checksum */
tehdr->chksum = 0;
tehdr->chksum = inet_chksum(tehdr, q->len);
ICMP_STATS_INC(icmp.xmit);
/* increase number of messages attempted to send */
snmp_inc_icmpoutmsgs();
/* increase number of destination unreachable messages attempted to send */
snmp_inc_icmpouttimeexcds();
ip_output(q, NULL, &(iphdr->src), ICMP_TTL, 0, IP_PROTO_ICMP);
pbuf_free(q);
}
开发者ID:YTakami，项目名称:makecontroller，代码行数:50，代码来源:icmp.c
示例10: ping_prepare_echo
/** Prepare a echo ICMP request */
static void ping_prepare_echo(struct icmp_echo_hdr *iecho,
struct ping_info_t* ping_info)
{
int i;
ICMPH_TYPE_SET(iecho,ICMP_ECHO);
ICMPH_CODE_SET(iecho, 0);
iecho->chksum = 0;
iecho->id = PING_ID;
iecho->seqno = htons(++ping_info->seq_num);
iecho->chksum = 0;
/* fill the additional data buffer with some data */
for(i = 0; i < ping_info->data_size; i++) {
((char*)iecho)[sizeof(struct icmp_echo_hdr) + i] = i;
}
iecho->chksum = inet_chksum(iecho, ping_info->size);
}
开发者ID:AndreyMostovov，项目名称:asf，代码行数:20，代码来源:ping.c
示例11: ping_prepare_echo
/** Prepare a echo ICMP request */
static void
ping_prepare_echo( struct icmp_echo_hdr *iecho, u16_t len)
{
size_t i;
size_t data_len = len - sizeof(struct icmp_echo_hdr);
ICMPH_TYPE_SET(iecho, ICMP_ECHO);
ICMPH_CODE_SET(iecho, 0);
iecho->chksum = 0;
iecho->id = PING_ID;
iecho->seqno = htons(++ping_seq_num);
/* fill the additional data buffer with some data */
for(i = 0; i < data_len; i++) {
((char*)iecho)[sizeof(struct icmp_echo_hdr) + i] = (char)i;
}
iecho->chksum = inet_chksum(iecho, len);
}
开发者ID:AlexShiLucky，项目名称:HelloX_STM32，代码行数:20，代码来源:network2.c
示例12: ping_send
static void
ping_send(struct raw_pcb *raw, ip_addr_t *addr)
{
struct pbuf *p;
struct icmp_echo_hdr *iecho;
p = pbuf_alloc(PBUF_IP,sizeof(struct icmp_echo_hdr),PBUF_RAM);
if (!p) return;
iecho = p->payload;
ICMPH_TYPE_SET(iecho,ICMP_ECHO);
iecho->chksum = 0;
iecho->seqno = htons(seq_num);
iecho->chksum = inet_chksum(iecho, p->len);
raw_send_to(raw,p,addr);
pbuf_free(p);
seq_num++;
}
开发者ID:malooei，项目名称:yeejoin-workspace，代码行数:21，代码来源:simhost.c
示例13: icmp_dest_unreach
/**
* 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)
{
struct pbuf *q;
struct ip_hdr *iphdr;
struct icmp_dur_hdr *idur;
/* ICMP header + IP header + 8 bytes of data */
q = pbuf_alloc(PBUF_IP, sizeof(struct icmp_dur_hdr) + IP_HLEN + ICMP_DEST_UNREACH_DATASIZE,
PBUF_RAM);
if (q == NULL) {
LWIP_DEBUGF(ICMP_DEBUG, ("icmp_dest_unreach: failed to allocate pbuf for ICMP packet.\n"));
return;
}
LWIP_ASSERT("check that first pbuf can hold icmp message",
(q->len >= (sizeof(struct icmp_dur_hdr) + IP_HLEN + ICMP_DEST_UNREACH_DATASIZE)));
iphdr = p->payload;
idur = q->payload;
ICMPH_TYPE_SET(idur, ICMP_DUR);
ICMPH_CODE_SET(idur, t);
SMEMCPY((u8_t *)q->payload + sizeof(struct icmp_dur_hdr), p->payload,
IP_HLEN + ICMP_DEST_UNREACH_DATASIZE);
/* calculate checksum */
idur->chksum = 0;
idur->chksum = inet_chksum(idur, q->len);
ICMP_STATS_INC(icmp.xmit);
/* increase number of messages attempted to send */
snmp_inc_icmpoutmsgs();
/* increase number of destination unreachable messages attempted to send */
snmp_inc_icmpoutdestunreachs();
ip_output(q, NULL, &(iphdr->src), ICMP_TTL, 0, IP_PROTO_ICMP);
pbuf_free(q);
}
开发者ID:YTakami，项目名称:makecontroller，代码行数:47，代码来源:icmp.c
示例14: ping_send
static void
ping_send(int s, const ip_addr_t *addr)
{
struct icmp_echo_hdr *iecho;
struct sockaddr_storage to;
if (!(iecho = (struct icmp_echo_hdr *)malloc(sizeof(struct icmp_echo_hdr))))
return;
ICMPH_TYPE_SET(iecho,ICMP_ECHO);
iecho->chksum = 0;
iecho->seqno = htons(seq_num);
iecho->chksum = inet_chksum(iecho, sizeof(*iecho));
#if LWIP_IPV4
if(!IP_IS_V6(addr)) {
struct sockaddr_in *to4 = (struct sockaddr_in*)&to;
to4->sin_len = sizeof(to);
to4->sin_family = AF_INET;
inet_addr_from_ipaddr(&to4->sin_addr, ip_2_ip4(addr));
}
#endif /* LWIP_IPV4 */
#if LWIP_IPV6
if(IP_IS_V6(addr)) {
struct sockaddr_in6 *to6 = (struct sockaddr_in6*)&to;
to6->sin6_len = sizeof(to);
to6->sin6_family = AF_INET6;
inet6_addr_from_ip6addr(&to6->sin6_addr, ip_2_ip6(addr));
}
#endif /* LWIP_IPV6 */
lwip_sendto(s, iecho, sizeof(*iecho), 0, (struct sockaddr*)&to, sizeof(to));
free(iecho);
seq_num++;
}
开发者ID:aps243，项目名称:2A-lwIP，代码行数:37，代码来源:simhost.c
示例15: icmp_input
//.........这里部分代码省略.........
MIB2_STATS_INC(mib2.icmpinerrors);
return;
}
}
#endif
#if LWIP_ICMP_ECHO_CHECK_INPUT_PBUF_LEN
if (pbuf_header(p, (hlen + PBUF_LINK_HLEN + PBUF_LINK_ENCAPSULATION_HLEN))) {
/* p is not big enough to contain link headers
* allocate a new one and copy p into it
*/
struct pbuf *r;
/* allocate new packet buffer with space for link headers */
r = pbuf_alloc(PBUF_LINK, p->tot_len + hlen, PBUF_RAM);
if (r == NULL) {
LWIP_DEBUGF(ICMP_DEBUG, ("icmp_input: allocating new pbuf failed\n"));
goto icmperr;
}
if (r->len < hlen + sizeof(struct icmp_echo_hdr)) {
LWIP_DEBUGF(ICMP_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("first pbuf cannot hold the ICMP header"));
pbuf_free(r);
goto icmperr;
}
/* copy the ip header */
MEMCPY(r->payload, iphdr_in, hlen);
/* switch r->payload back to icmp header (cannot fail) */
if (pbuf_header(r, -hlen)) {
LWIP_ASSERT("icmp_input: moving r->payload to icmp header failed\n", 0);
pbuf_free(r);
goto icmperr;
}
/* copy the rest of the packet without ip header */
if (pbuf_copy(r, p) != ERR_OK) {
LWIP_DEBUGF(ICMP_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("icmp_input: copying to new pbuf failed"));
pbuf_free(r);
goto icmperr;
}
/* free the original p */
pbuf_free(p);
/* we now have an identical copy of p that has room for link headers */
p = r;
} else {
/* restore p->payload to point to icmp header (cannot fail) */
if (pbuf_header(p, -(s16_t)(hlen + PBUF_LINK_HLEN + PBUF_LINK_ENCAPSULATION_HLEN))) {
LWIP_ASSERT("icmp_input: restoring original p->payload failed\n", 0);
goto icmperr;
}
}
#endif /* LWIP_ICMP_ECHO_CHECK_INPUT_PBUF_LEN */
/* At this point, all checks are OK. */
/* We generate an answer by switching the dest and src ip addresses,
* setting the icmp type to ECHO_RESPONSE and updating the checksum. */
iecho = (struct icmp_echo_hdr *)p->payload;
if (pbuf_header(p, hlen)) {
LWIP_DEBUGF(ICMP_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("Can't move over header in packet"));
} else {
err_t ret;
struct ip_hdr *iphdr = (struct ip_hdr*)p->payload;
ip4_addr_copy(iphdr->src, *src);
ip4_addr_copy(iphdr->dest, *ip4_current_src_addr());
ICMPH_TYPE_SET(iecho, ICMP_ER);
#if CHECKSUM_GEN_ICMP
IF__NETIF_CHECKSUM_ENABLED(inp, NETIF_CHECKSUM_GEN_ICMP) {
/* adjust the checksum */
if (iecho->chksum > PP_HTONS(0xffffU - (ICMP_ECHO << 8))) {
iecho->chksum += PP_HTONS(ICMP_ECHO << 8) + 1;
} else {
iecho->chksum += PP_HTONS(ICMP_ECHO << 8);
}
}
#if LWIP_CHECKSUM_CTRL_PER_NETIF
else {
iecho->chksum = 0;
}
#endif /* LWIP_CHECKSUM_CTRL_PER_NETIF */
#else /* CHECKSUM_GEN_ICMP */
iecho->chksum = 0;
#endif /* CHECKSUM_GEN_ICMP */
/* Set the correct TTL and recalculate the header checksum. */
IPH_TTL_SET(iphdr, ICMP_TTL);
IPH_CHKSUM_SET(iphdr, 0);
#if CHECKSUM_GEN_IP
IF__NETIF_CHECKSUM_ENABLED(inp, NETIF_CHECKSUM_GEN_IP) {
IPH_CHKSUM_SET(iphdr, inet_chksum(iphdr, hlen));
}
#endif /* CHECKSUM_GEN_IP */
ICMP_STATS_INC(icmp.xmit);
/* increase number of messages attempted to send */
MIB2_STATS_INC(mib2.icmpoutmsgs);
/* increase number of echo replies attempted to send */
MIB2_STATS_INC(mib2.icmpoutechoreps);
/* send an ICMP packet */
ret = ip4_output_if(p, src, IP_HDRINCL,
ICMP_TTL, 0, IP_PROTO_ICMP, inp);
if (ret != ERR_OK) {
LWIP_DEBUGF(ICMP_DEBUG, ("icmp_input: ip_output_if returned an error: %s\n", lwip_strerr(ret)));
}
}
开发者ID:SolarTeamEindhoven，项目名称:mbed，代码行数:101，代码来源:lwip_icmp.c
示例16: icmp_input
//.........这里部分代码省略.........
/* switch p->payload to ip header */
if (pbuf_header(p, hlen)) {
LWIP_ASSERT("icmp_input: moving p->payload to ip header failed\n", 0);
goto memerr;
}
/* allocate new packet buffer with space for link headers */
r = pbuf_alloc(PBUF_LINK, p->tot_len, PBUF_RAM);
if (r == NULL) {
LWIP_DEBUGF(ICMP_DEBUG, ("icmp_input: allocating new pbuf failed\n"));
goto memerr;
}
LWIP_ASSERT("check that first pbuf can hold struct the ICMP header",
(r->len >= hlen + sizeof(struct icmp_echo_hdr)));
/* copy the whole packet including ip header */
if (pbuf_copy(r, p) != ERR_OK) {
LWIP_ASSERT("icmp_input: copying to new pbuf failed\n", 0);
goto memerr;
}
iphdr = (struct ip_hdr *)r->payload;
/* switch r->payload back to icmp header */
if (pbuf_header(r, -hlen)) {
LWIP_ASSERT("icmp_input: restoring original p->payload failed\n", 0);
goto memerr;
}
/* free the original p */
pbuf_free(p);
/* we now have an identical copy of p that has room for link headers */
p = r;
} else {
/* restore p->payload to point to icmp header */
if (pbuf_header(p, -(s16_t)(PBUF_IP_HLEN + PBUF_LINK_HLEN))) {
LWIP_ASSERT("icmp_input: restoring original p->payload failed\n", 0);
goto memerr;
}
}
#endif /* LWIP_ICMP_ECHO_CHECK_INPUT_PBUF_LEN */
/* At this point, all checks are OK. */
/* We generate an answer by switching the dest and src ip addresses,
* setting the icmp type to ECHO_RESPONSE and updating the checksum. */
iecho = (struct icmp_echo_hdr *)p->payload;
ip_addr_copy(iphdr->src, *ip_current_dest_addr());
ip_addr_copy(iphdr->dest, *ip_current_src_addr());
ICMPH_TYPE_SET(iecho, ICMP_ER);
#if CHECKSUM_GEN_ICMP
/* adjust the checksum */
if (iecho->chksum > PP_HTONS(0xffffU - (ICMP_ECHO << 8))) {
iecho->chksum += PP_HTONS(ICMP_ECHO << 8) + 1;
} else {
iecho->chksum += PP_HTONS(ICMP_ECHO << 8);
}
#else /* CHECKSUM_GEN_ICMP */
iecho->chksum = 0;
#endif /* CHECKSUM_GEN_ICMP */
/* Set the correct TTL and recalculate the header checksum. */
IPH_TTL_SET(iphdr, ICMP_TTL);
IPH_CHKSUM_SET(iphdr, 0);
#if CHECKSUM_GEN_IP
IPH_CHKSUM_SET(iphdr, inet_chksum(iphdr, IP_HLEN));
#endif /* CHECKSUM_GEN_IP */
ICMP_STATS_INC(icmp.xmit);
/* increase number of messages attempted to send */
snmp_inc_icmpoutmsgs();
/* increase number of echo replies attempted to send */
snmp_inc_icmpoutechoreps();
if(pbuf_header(p, hlen)) {
LWIP_ASSERT("Can't move over header in packet", 0);
} else {
err_t ret;
/* send an ICMP packet, src addr is the dest addr of the curren packet */
ret = ip_output_if(p, ip_current_dest_addr(), IP_HDRINCL,
ICMP_TTL, 0, IP_PROTO_ICMP, inp);
if (ret != ERR_OK) {
LWIP_DEBUGF(ICMP_DEBUG, ("icmp_input: ip_output_if returned an error: %c.\n", ret));
}
}
break;
default:
LWIP_DEBUGF(ICMP_DEBUG, ("icmp_input: ICMP type %"S16_F" code %"S16_F" not supported.\n",
(s16_t)type, (s16_t)code));
ICMP_STATS_INC(icmp.proterr);
ICMP_STATS_INC(icmp.drop);
}
pbuf_free(p);
return;
lenerr:
pbuf_free(p);
ICMP_STATS_INC(icmp.lenerr);
snmp_inc_icmpinerrors();
return;
#if LWIP_ICMP_ECHO_CHECK_INPUT_PBUF_LEN
memerr:
pbuf_free(p);
ICMP_STATS_INC(icmp.err);
snmp_inc_icmpinerrors();
return;
#endif /* LWIP_ICMP_ECHO_CHECK_INPUT_PBUF_LEN */
}
开发者ID:svn2github，项目名称:virtualbox，代码行数:101，代码来源:icmp.c
示例17: icmp_input
void
icmp_input(struct pbuf *p, struct netif *inp)
{
u8_t type;
u8_t code;
struct icmp_echo_hdr *iecho;
struct ip_hdr *iphdr;
struct ip_addr tmpaddr;
u16_t hlen;
u8_t *payload = NULL;
ICMP_STATS_INC(icmp.recv);
snmp_inc_icmpinmsgs();
iphdr = p->payload;
hlen = IPH_HL(iphdr) * 4;
if (p->tot_len < sizeof(u16_t)*2) {
LWIP_DEBUGF(ICMP_DEBUG, ("icmp_input: short ICMP (%"U16_F" bytes) received\n", p->tot_len));
pbuf_free(p);
ICMP_STATS_INC(icmp.lenerr);
snmp_inc_icmpinerrors();
return;
}
payload = (u8_t *)p->payload + hlen;
type = *payload;
code = *(payload+1);
switch (type) {
case ICMP_ECHO:
/* broadcast or multicast destination address? */
if (ip_addr_isbroadcast(&iphdr->dest, inp) || ip_addr_ismulticast(&iphdr->dest)) {
LWIP_DEBUGF(ICMP_DEBUG, ("icmp_input: Not echoing to multicast or broadcast pings\n"));
ICMP_STATS_INC(icmp.err);
pbuf_free(p);
return;
}
LWIP_DEBUGF(ICMP_DEBUG, ("icmp_input: ping\n"));
if (p->tot_len < sizeof(struct icmp_echo_hdr)) {
LWIP_DEBUGF(ICMP_DEBUG, ("icmp_input: bad ICMP echo received\n"));
pbuf_free(p);
ICMP_STATS_INC(icmp.lenerr);
snmp_inc_icmpinerrors();
return;
}
iecho = (struct icmp_echo_hdr *)payload;
if (inet_chksum_pbuf(p) != 0) {
LWIP_DEBUGF(ICMP_DEBUG, ("icmp_input: checksum failed for received ICMP echo\n"));
pbuf_free(p);
ICMP_STATS_INC(icmp.chkerr);
snmp_inc_icmpinerrors();
return;
}
tmpaddr.addr = iphdr->src.addr;
iphdr->src.addr = iphdr->dest.addr;
iphdr->dest.addr = tmpaddr.addr;
ICMPH_TYPE_SET(iecho, ICMP_ER);
/* adjust the checksum */
if (iecho->chksum >= htons(0xffff - (ICMP_ECHO << 8))) {
iecho->chksum += htons(ICMP_ECHO << 8) + 1;
} else {
iecho->chksum += htons(ICMP_ECHO << 8);
}
ICMP_STATS_INC(icmp.xmit);
/* increase number of messages attempted to send */
snmp_inc_icmpoutmsgs();
/* increase number of echo replies attempted to send */
snmp_inc_icmpoutechoreps();
pbuf_header(p, hlen);
ip_output_if(p, &(iphdr->src), IP_HDRINCL,
IPH_TTL(iphdr), 0, IP_PROTO_ICMP, inp);
break;
default:
LWIP_DEBUGF(ICMP_DEBUG, ("icmp_input: ICMP type %"S16_F" code %"S16_F" not supported.\n", (s16_t)type, (s16_t)code));
ICMP_STATS_INC(icmp.proterr);
ICMP_STATS_INC(icmp.drop);
}
pbuf_free(p);
}
开发者ID:Undrizzle，项目名称:yolanda，代码行数:83，代码来源:icmp.c
示例18: icmp_input
//.........这里部分代码省略.........
/* allocate new packet buffer with space for link headers */
r = pbuf_alloc(PBUF_LINK, p->tot_len, PBUF_RAM);
if (r == NULL) {
LWIP_DEBUGF(ICMP_DEBUG, ("icmp_input: allocating new pbuf failed\n"));
goto memerr;
}
LWIP_ASSERT("check that first pbuf can hold struct the ICMP header",
(r->len >= hlen + sizeof(struct icmp_echo_hdr)));
/* copy the whole packet including ip header */
if (pbuf_copy(r, p) != ERR_OK) {
LWIP_ASSERT("icmp_input: copying to new pbuf failed\n", 0);
goto memerr;
}
iphdr = r->payload;
/* switch r->payload back to icmp header */
if (pbuf_header(r, -hlen)) {
LWIP_ASSERT("icmp_input: restoring original p->payload failed\n", 0);
goto memerr;
}
/* free the original p */
pbuf_free(p);
/* we now have an identical copy of p that has room for link headers */
p = r;
} else {
/* restore p->payload to point to icmp header */
if (pbuf_header(p, -(s16_t)(PBUF_IP_HLEN + PBUF_LINK_HLEN))) {
LWIP_ASSERT("icmp_input: restoring original p->payload failed\n", 0);
goto memerr;
}
}
#endif /* LWIP_ICMP_ECHO_CHECK_INPUT_PBUF_LEN */
/* At this point, all checks are OK. */
/* We generate an answer by switching the dest and src ip addresses,
* setting the icmp type to ECHO_RESPONSE and updating the checksum. */
iecho = p->payload;
tmpaddr.addr = iphdr->src.addr;
iphdr->src.addr = iphdr->dest.addr;
iphdr->dest.addr = tmpaddr.addr;
ICMPH_TYPE_SET(iecho, ICMP_ER);
/* This part of code has been modified by ST's MCD Application Team */
/* To use the Checksum Offload Engine for the putgoing ICMP packets,
the ICMP checksum field should be set to 0, this is required only for Tx ICMP*/
#ifdef CHECKSUM_BY_HARDWARE
iecho->chksum = 0;
#else
/* adjust the checksum */
if (iecho->chksum >= htons(0xffff - (ICMP_ECHO << 8))) {
iecho->chksum += htons(ICMP_ECHO << 8) + 1;
} else {
iecho->chksum += htons(ICMP_ECHO << 8);
}
#endif
/* Set the correct TTL and recalculate the header checksum. */
IPH_TTL_SET(iphdr, ICMP_TTL);
IPH_CHKSUM_SET(iphdr, 0);
#if CHECKSUM_GEN_IP
IPH_CHKSUM_SET(iphdr, inet_chksum(iphdr, IP_HLEN));
#endif /* CHECKSUM_GEN_IP */
ICMP_STATS_INC(icmp.xmit);
/* increase number of messages attempted to send */
snmp_inc_icmpoutmsgs();
/* increase number of echo replies attempted to send */
snmp_inc_icmpoutechoreps();
if(pbuf_header(p, hlen)) {
LWIP_ASSERT("Can't move over header in packet", 0);
} else {
err_t ret;
ret = ip_output_if(p, &(iphdr->src), IP_HDRINCL,
ICMP_TTL, 0, IP_PROTO_ICMP, inp);
if (ret != ERR_OK) {
LWIP_DEBUGF(ICMP_DEBUG, ("icmp_input: ip_output_if returned an error: %c.\n", ret));
}
}
break;
default:
LWIP_DEBUGF(ICMP_DEBUG, ("icmp_input: ICMP type %"S16_F" code %"S16_F" not supported.\n",
(s16_t)type, (s16_t)code));
ICMP_STATS_INC(icmp.proterr);
ICMP_STATS_INC(icmp.drop);
}
pbuf_free(p);
return;
lenerr:
pbuf_free(p);
ICMP_STATS_INC(icmp.lenerr);
snmp_inc_icmpinerrors();
return;
#if LWIP_ICMP_ECHO_CHECK_INPUT_PBUF_LEN
memerr:
pbuf_free(p);
ICMP_STATS_INC(icmp.err);
snmp_inc_icmpinerrors();
return;
#endif /* LWIP_ICMP_ECHO_CHECK_INPUT_PBUF_LEN */
}
开发者ID:fanqh，项目名称:ETH_Mange，代码行数:101，代码来源:icmp.c
示例19: icmp_input
/**
* Processes ICMP input packets, called from ip_input().
*
* Currently only processes icmp echo requests and sends
* out the echo response.
*
* @param p the icmp echo request packet, p->payload pointing to the ip header
* @param inp the netif on which this packet was received
*/
void icmp_input(PBUF *p, NETIF *inp)
{
uint8 type;
ICMP_ECHO_HDR *iecho;
IP_HDR *iphdr;
IP_ADDR tmpaddr;
int16 hlen;
iphdr = p->payload;
hlen = IPH_HL(iphdr) * 4;
if (pbuf_header(p, -hlen) == 0)
return;
type = *((uint8 *)p->payload);
iecho = p->payload;
printf("icmp_input %d %d\n", iecho->type, iecho->code);
switch (type)
{
case ICMP_ECHO:
{
int accepted = 1;
/* multicast destination address? */
if (ip_addr_ismulticast(&iphdr->dest))
{
accepted = 0;
}
/* broadcast destination address? */
if (ip_addr_isbroadcast(&iphdr->dest, inp))
{
accepted = 0;
}
/* broadcast or multicast destination address not acceptd? */
if (!accepted)
{
pbuf_free(p);
return;
}
if (p->len < sizeof(ICMP_ECHO_HDR))
goto lenerr;
if (inet_chksum_pbuf(p) != 0)
{
pbuf_free(p);
return;
}
/* At this point, all checks are OK. */
/* We generate an answer by switching the dest and src ip addresses,
* setting the icmp type to ECHO_RESPONSE and updating the checksum. */
tmpaddr.addr = iphdr->src.addr;
iphdr->src.addr = iphdr->dest.addr;
iphdr->dest.addr = tmpaddr.addr;
iecho = p->payload;
ICMPH_TYPE_SET(iecho, ICMP_ER);
/* adjust the checksum */
if (iecho->chksum >= htons(0xffff - (ICMP_ECHO << 8)))
{
iecho->chksum += htons(ICMP_ECHO << 8) + 1;
}
else
{
iecho->chksum += htons(ICMP_ECHO << 8);
}
if (pbuf_header(p, hlen) == 0)
return;
ip_output_if(p, &(iphdr->src), IP_HDRINCL, ICMP_TTL, 0, IP_PROTO_ICMP, inp);
break;
}
default:
break;
}
lenerr:
pbuf_free(p);
return;
}
开发者ID:imaginegit，项目名称:wifisdk，代码行数:95，代码来源:icmp.c
示例20: icmp_input
/*-----------------------------------------------------------------------------------*/
void
icmp_input(struct pbuf *p, struct netif *inp)
{
unsigned char type;
struct icmp_echo_hdr *iecho;
struct ip_hdr *iphdr;
struct ip_addr tmpaddr;
uint16_t hlen;
#ifdef ICMP_STATS
++stats.icmp.recv;
#endif /* ICMP_STATS */
iphdr = p->payload;
hlen = IPH_HL(iphdr) * 4/sizeof(uint8_t);
pbuf_header(p, -hlen);
type = *((uint8_t *)p->payload);
switch(type) {
case ICMP_ECHO:
if(ip_addr_isbroadcast(&iphdr->dest, &inp->netmask) ||
ip_addr_ismulticast(&iphdr->dest)) {
DEBUGF(ICMP_DEBUG, ("Smurf.\n"));
#ifdef ICMP_STATS
++stats.icmp.err;
#endif /* ICMP_STATS */
pbuf_free(p);
return;
}
DEBUGF(ICMP_DEBUG, ("icmp_input: ping\n"));
DEBUGF(DEMO_DEBUG, ("Pong!\n"));
if(p->tot_len < sizeof(struct icmp_echo_hdr)) {
DEBUGF(ICMP_DEBUG, ("icmp_input: bad ICMP echo received\n"));
pbuf_free(p);
#ifdef ICMP_STATS
++stats.icmp.lenerr;
#endif /* ICMP_STATS */
return;
}
iecho = p->payload;
if(inet_chksum_pbuf(p) != 0) {
DEBUGF(ICMP_DEBUG, ("icmp_input: checksum failed for received ICMP echo\n"));
pbuf_free(p);
#ifdef ICMP_STATS
++stats.icmp.chkerr;
#endif /* ICMP_STATS */
return;
}
tmpaddr.addr = iphdr->src.addr;
iphdr->src.addr = iphdr->dest.addr;
iphdr->dest.addr = tmpaddr.addr;
ICMPH_TYPE_SET(iecho, ICMP_ER);
/* adjust the checksum */
if(iecho->chksum >= htons(0xffff - (ICMP_ECHO << 8))) {
iecho->chksum += htons(ICMP_ECHO << 8) + 1;
} else {
iecho->chksum += htons(ICMP_ECHO << 8);
}
#ifdef ICMP_STATS
++stats.icmp.xmit;
#endif /* ICMP_STATS */
pbuf_header(p, hlen);
/* XXX .mc */
assert(0);
/*sr_lwip_output(p, IP_HDRINCL, IP_PROTO_ICMP);*/
break;
default:
DEBUGF(ICMP_DEBUG, ("icmp_input: ICMP type not supported.\n"));
#ifdef ICMP_STATS
++stats.icmp.proterr;
++stats.icmp.drop;
#endif /* ICMP_STATS */
}
pbuf_free(p);
}
开发者ID:dananjayamahesh，项目名称:netfpga，代码行数:82，代码来源:icmp.c
注：本文中的ICMPH_TYPE_SET函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。 |
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