static int send_cmd(int fd, RawRequest_t *raw_cmd, int nr,
const char *message, int retries)
{
int j;
int ret=-1;
if(!nr)
return 0;
for (j=0; j< retries; j++){
switch(send_one_cmd(fd, raw_cmd, message)) {
case -1:
return -1;
case 1:
j++;
continue;
case 0:
break;
}
if((ret=analyze_reply(raw_cmd, j)) > 0)
return ret; /* ok */
}
if(j > 1 && j == retries) {
fprintf(stderr,"Too many errors, giving up\n");
return 0;
}
return -1;
}
void recv_icmp6(void){
int len,icmplen,datalen;
char buf[1024];
char abuf[100];
const char *name;
struct sockaddr_in6 from;
struct icmp6_hdr *icmp;
struct timeval time_recv;
struct timeval *time_recvp=NULL;
#ifdef HAVE_RECVMSG
char ans_data[4096];
struct iovec iov;
struct msghdr msg;
struct cmsghdr *c;
iov.iov_base=buf;
iov.iov_len=1000;
msg.msg_name=&from;
msg.msg_namelen=sizeof(from);
msg.msg_iov=&iov;
msg.msg_iovlen=1;
msg.msg_control=ans_data;
msg.msg_controllen=sizeof(ans_data);
len=recvmsg(icmp6_sock, &msg, MSG_DONTWAIT);
#else
socklen_t sl;
sl=sizeof(from);
len=recvfrom(icmp6_sock,buf,1024,0,(struct sockaddr *)&from,&sl);
#endif
if (len<0){
if (errno==EAGAIN) return;
myperror("recvfrom");
return;
}
if (len==0) return;
#if defined(HAVE_RECVMSG) && defined(SO_TIMESTAMP)
debug("checking CMSG...");
for (c = CMSG_FIRSTHDR(&msg); c; c = CMSG_NXTHDR(&msg, c)) {
debug("CMSG level: %i type: %i",c->cmsg_level,c->cmsg_type);
if (c->cmsg_level != SOL_SOCKET || c->cmsg_type != SO_TIMESTAMP)
continue;
if (c->cmsg_len < CMSG_LEN(sizeof(struct timeval)))
continue;
time_recvp = (struct timeval*)CMSG_DATA(c);
debug("Got timestamp from CMSG");
}
#endif
if (time_recvp==NULL){
#ifdef SIOCGSTAMP
if (!ioctl(icmp6_sock, SIOCGSTAMP, &time_recv)){
debug("Got timestamp from ioctl()");
}else
#endif
{
gettimeofday(&time_recv,NULL);
debug("Got timestamp from gettimeofday()");
}
time_recvp=&time_recv;
}
icmplen=len;
icmp=(struct icmp6_hdr *)buf;
if (icmp->icmp6_type != ICMP6_ECHO_REPLY) return;
if (icmp->icmp6_id != ident) return;
name=inet_ntop(AF_INET6,&from.sin6_addr,abuf,100);
debug("Ping reply from %s",name);
datalen=icmplen-sizeof(*icmp);
if (datalen!=sizeof(struct trace_info)){
debug("Packet data truncated.");
return;
}
#ifdef FORKED_RECEIVER
pipe_reply(*time_recvp,icmp->icmp6_seq,(struct trace_info*)(icmp+1));
#else
analyze_reply(*time_recvp,icmp->icmp6_seq,(struct trace_info*)(icmp+1));
#endif
}
