vitalif
/
mirror_qemu
mirror of https://github.com/proxmox/mirror_qemu
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

slirp: improve a bit the debug macros 

Let them accept multiple arguments. Simplify the inner argument
handling of DEBUG_ARGS/DEBUG_MISC_DEBUG_ERROR.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
master
Marc-André Lureau 2018-11-14 16:36:31 +04:00 committed by Samuel Thibault
parent 90dfa27841
commit 2afbb788ff
16 changed files with 109 additions and 85 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
slirp/arp_table.c
View File

@ -34,9 +34,9 @@ void arp_table_add(Slirp *slirp, uint32_t ip_addr, uint8_t ethaddr[ETH_ALEN])
DEBUG_CALL("arp_table_add");
DEBUG_ARG("ip = %s", inet_ntoa((struct in_addr){.s_addr = ip_addr}));
DEBUG_ARGS((dfd, " hw addr = %02x:%02x:%02x:%02x:%02x:%02x\n",
ethaddr[0], ethaddr[1], ethaddr[2],
ethaddr[3], ethaddr[4], ethaddr[5]));
DEBUG_ARGS(" hw addr = %02x:%02x:%02x:%02x:%02x:%02x\n",
ethaddr[0], ethaddr[1], ethaddr[2],
ethaddr[3], ethaddr[4], ethaddr[5]);
if (ip_addr == 0 || ip_addr == 0xffffffff || ip_addr == broadcast_addr) {
/* Do not register broadcast addresses */
@ -79,9 +79,9 @@ bool arp_table_search(Slirp *slirp, uint32_t ip_addr,
for (i = 0; i < ARP_TABLE_SIZE; i++) {
if (arptbl->table[i].ar_sip == ip_addr) {
memcpy(out_ethaddr, arptbl->table[i].ar_sha, ETH_ALEN);
DEBUG_ARGS((dfd, " found hw addr = %02x:%02x:%02x:%02x:%02x:%02x\n",
out_ethaddr[0], out_ethaddr[1], out_ethaddr[2],
out_ethaddr[3], out_ethaddr[4], out_ethaddr[5]));
DEBUG_ARGS(" found hw addr = %02x:%02x:%02x:%02x:%02x:%02x\n",
out_ethaddr[0], out_ethaddr[1], out_ethaddr[2],
out_ethaddr[3], out_ethaddr[4], out_ethaddr[5]);
return 1;
}
}

3
slirp/bootp.c
View File

@ -37,8 +37,7 @@
static const uint8_t rfc1533_cookie[] = { RFC1533_COOKIE };
#ifdef DEBUG
#define DPRINTF(fmt, ...) \
do if (slirp_debug & DBG_CALL) { fprintf(dfd, fmt, ## __VA_ARGS__); fflush(dfd); } while (0)
#define DPRINTF(fmt, ...) DEBUG_CALL(fmt, ##__VA_ARGS__)
#else
#define DPRINTF(fmt, ...) do{}while(0)
#endif

4
slirp/cksum.c
View File

@ -124,8 +124,8 @@ int cksum(struct mbuf *m, int len)
cont:
#ifdef DEBUG
if (len) {
DEBUG_ERROR((dfd, "cksum: out of data\n"));
DEBUG_ERROR((dfd, " len = %d\n", len));
DEBUG_ERROR("cksum: out of data\n");
DEBUG_ERROR(" len = %d\n", len);
}
#endif
if (mlen == -1) {

47
slirp/debug.h
View File

@ -17,18 +17,45 @@
extern int slirp_debug;
#define DEBUG_CALL(x) if (slirp_debug & DBG_CALL) { fprintf(dfd, "%s...\n", x); fflush(dfd); }
#define DEBUG_ARG(x, y) if (slirp_debug & DBG_CALL) { fputc(' ', dfd); fprintf(dfd, x, y); fputc('\n', dfd); fflush(dfd); }
#define DEBUG_ARGS(x) if (slirp_debug & DBG_CALL) { fprintf x ; fflush(dfd); }
#define DEBUG_MISC(x) if (slirp_debug & DBG_MISC) { fprintf x ; fflush(dfd); }
#define DEBUG_ERROR(x) if (slirp_debug & DBG_ERROR) {fprintf x ; fflush(dfd); }
#define DEBUG_CALL(fmt, ...) do { \
if (slirp_debug & DBG_CALL) { \
fprintf(dfd, fmt, ##__VA_ARGS__); \
fprintf(dfd, "...\n"); \
fflush(dfd); \
} \
} while (0)
#define DEBUG_ARG(fmt, ...) do { \
if (slirp_debug & DBG_CALL) { \
fputc(' ', dfd); \
fprintf(dfd, fmt, ##__VA_ARGS__); \
fputc('\n', dfd); \
fflush(dfd); \
} \
} while (0)
#define DEBUG_ARGS(fmt, ...) DEBUG_ARG(fmt, ##__VA_ARGS__)
#define DEBUG_MISC(fmt, ...) do { \
if (slirp_debug & DBG_MISC) { \
fprintf(dfd, fmt, ##__VA_ARGS__); \
fflush(dfd); \
} \
} while (0)
#define DEBUG_ERROR(fmt, ...) do { \
if (slirp_debug & DBG_ERROR) { \
fprintf(dfd, fmt, ##__VA_ARGS__); \
fflush(dfd); \
} \
} while (0)
#else
#define DEBUG_CALL(x)
#define DEBUG_ARG(x, y)
#define DEBUG_ARGS(x)
#define DEBUG_MISC(x)
#define DEBUG_ERROR(x)
#define DEBUG_CALL(fmt, ...)
#define DEBUG_ARG(fmt, ...)
#define DEBUG_ARGS(fmt, ...)
#define DEBUG_MISC(fmt, ...)
#define DEBUG_ERROR(fmt, ...)
#endif

11
slirp/dhcpv6.c
View File

@ -92,14 +92,14 @@ static int dhcpv6_parse_info_request(uint8_t *odata, int olen,
ri->want_boot_url = true;
break;
default:
DEBUG_MISC((dfd, "dhcpv6: Unsupported option request %d\n",
req_opt));
DEBUG_MISC("dhcpv6: Unsupported option request %d\n",
req_opt);
}
}
break;
default:
DEBUG_MISC((dfd, "dhcpv6 info req: Unsupported option %d, len=%d\n",
option, len));
DEBUG_MISC("dhcpv6 info req: Unsupported option %d, len=%d\n",
option, len);
}
odata += len + 4;
@ -203,7 +203,6 @@ void dhcpv6_input(struct sockaddr_in6 *srcsas, struct mbuf *m)
dhcpv6_info_request(m->slirp, srcsas, xid, &data[4], data_len - 4);
break;
default:
DEBUG_MISC((dfd, "dhcpv6_input: Unsupported message type 0x%x\n",
data[0]));
DEBUG_MISC("dhcpv6_input: Unsupported message type 0x%x\n", data[0]);
}
}

2
slirp/ip6_icmp.c
View File

@ -76,7 +76,7 @@ void icmp6_send_error(struct mbuf *m, uint8_t type, uint8_t code)
struct ip6 *ip = mtod(m, struct ip6 *);
DEBUG_CALL("icmp6_send_error");
DEBUG_ARGS((dfd, " type = %d, code = %d\n", type, code));
DEBUG_ARGS(" type = %d, code = %d\n", type, code);
if (IN6_IS_ADDR_MULTICAST(&ip->ip_src) ||
in6_zero(&ip->ip_src)) {

18
slirp/ip_icmp.c
View File

@ -99,8 +99,8 @@ static int icmp_send(struct socket *so, struct mbuf *m, int hlen)
if (sendto(so->s, m->m_data + hlen, m->m_len - hlen, 0,
(struct sockaddr *)&addr, sizeof(addr)) == -1) {
DEBUG_MISC((dfd, "icmp_input icmp sendto tx errno = %d-%s\n",
errno, strerror(errno)));
DEBUG_MISC("icmp_input icmp sendto tx errno = %d-%s\n",
errno, strerror(errno));
icmp_send_error(m, ICMP_UNREACH, ICMP_UNREACH_NET, 0, strerror(errno));
icmp_detach(so);
}
@ -165,8 +165,8 @@ icmp_input(struct mbuf *m, int hlen)
return;
}
if (udp_attach(so, AF_INET) == -1) {
DEBUG_MISC((dfd,"icmp_input udp_attach errno = %d-%s\n",
errno,strerror(errno)));
DEBUG_MISC("icmp_input udp_attach errno = %d-%s\n",
errno,strerror(errno));
sofree(so);
m_free(m);
goto end_error;
@ -188,8 +188,8 @@ icmp_input(struct mbuf *m, int hlen)
if(sendto(so->s, icmp_ping_msg, strlen(icmp_ping_msg), 0,
(struct sockaddr *)&addr, sockaddr_size(&addr)) == -1) {
DEBUG_MISC((dfd,"icmp_input udp sendto tx errno = %d-%s\n",
errno,strerror(errno)));
DEBUG_MISC("icmp_input udp sendto tx errno = %d-%s\n",
errno,strerror(errno));
icmp_send_error(m, ICMP_UNREACH, ICMP_UNREACH_NET, 0, strerror(errno));
udp_detach(so);
}
@ -257,7 +257,7 @@ icmp_send_error(struct mbuf *msrc, u_char type, u_char code, int minsize,
{ char bufa[20], bufb[20];
strcpy(bufa, inet_ntoa(ip->ip_src));
strcpy(bufb, inet_ntoa(ip->ip_dst));
DEBUG_MISC((dfd, " %.16s to %.16s\n", bufa, bufb));
DEBUG_MISC(" %.16s to %.16s\n", bufa, bufb);
}
#endif
if(ip->ip_off & IP_OFFMASK) goto end_error; /* Only reply to fragment 0 */
@ -457,8 +457,8 @@ void icmp_receive(struct socket *so)
} else {
error_code = ICMP_UNREACH_HOST;
}
DEBUG_MISC((dfd, " udp icmp rx errno = %d-%s\n", errno,
strerror(errno)));
DEBUG_MISC(" udp icmp rx errno = %d-%s\n", errno,
strerror(errno));
icmp_send_error(so->so_m, ICMP_UNREACH, error_code, 0, strerror(errno));
} else {
icmp_reflect(so->so_m);

2
slirp/mbuf.c
View File

@ -232,7 +232,7 @@ dtom(Slirp *slirp, void *dat)
}
}
DEBUG_ERROR((dfd, "dtom failed"));
DEBUG_ERROR("dtom failed");
return (struct mbuf *)0;
}

18
slirp/ndp_table.c
View File

@ -19,9 +19,9 @@ void ndp_table_add(Slirp *slirp, struct in6_addr ip_addr,
inet_ntop(AF_INET6, &(ip_addr), addrstr, INET6_ADDRSTRLEN);
DEBUG_ARG("ip = %s", addrstr);
#endif
DEBUG_ARGS((dfd, " hw addr = %02x:%02x:%02x:%02x:%02x:%02x\n",
ethaddr[0], ethaddr[1], ethaddr[2],
ethaddr[3], ethaddr[4], ethaddr[5]));
DEBUG_ARGS(" hw addr = %02x:%02x:%02x:%02x:%02x:%02x\n",
ethaddr[0], ethaddr[1], ethaddr[2],
ethaddr[3], ethaddr[4], ethaddr[5]);
if (IN6_IS_ADDR_MULTICAST(&ip_addr) || in6_zero(&ip_addr)) {
/* Do not register multicast or unspecified addresses */
@ -69,18 +69,18 @@ bool ndp_table_search(Slirp *slirp, struct in6_addr ip_addr,
out_ethaddr[3] = ip_addr.s6_addr[13];
out_ethaddr[4] = ip_addr.s6_addr[14];
out_ethaddr[5] = ip_addr.s6_addr[15];
DEBUG_ARGS((dfd, " multicast addr = %02x:%02x:%02x:%02x:%02x:%02x\n",
out_ethaddr[0], out_ethaddr[1], out_ethaddr[2],
out_ethaddr[3], out_ethaddr[4], out_ethaddr[5]));
DEBUG_ARGS(" multicast addr = %02x:%02x:%02x:%02x:%02x:%02x\n",
out_ethaddr[0], out_ethaddr[1], out_ethaddr[2],
out_ethaddr[3], out_ethaddr[4], out_ethaddr[5]);
return 1;
}
for (i = 0; i < NDP_TABLE_SIZE; i++) {
if (in6_equal(&ndp_table->table[i].ip_addr, &ip_addr)) {
memcpy(out_ethaddr, ndp_table->table[i].eth_addr, ETH_ALEN);
DEBUG_ARGS((dfd, " found hw addr = %02x:%02x:%02x:%02x:%02x:%02x\n",
out_ethaddr[0], out_ethaddr[1], out_ethaddr[2],
out_ethaddr[3], out_ethaddr[4], out_ethaddr[5]));
DEBUG_ARGS(" found hw addr = %02x:%02x:%02x:%02x:%02x:%02x\n",
out_ethaddr[0], out_ethaddr[1], out_ethaddr[2],
out_ethaddr[3], out_ethaddr[4], out_ethaddr[5]);
return 1;
}
}

12
slirp/slirp.c
View File

@ -984,12 +984,12 @@ int if_encap(Slirp *slirp, struct mbuf *ifm)
}
memcpy(eh->h_dest, ethaddr, ETH_ALEN);
DEBUG_ARGS((dfd, " src = %02x:%02x:%02x:%02x:%02x:%02x\n",
eh->h_source[0], eh->h_source[1], eh->h_source[2],
eh->h_source[3], eh->h_source[4], eh->h_source[5]));
DEBUG_ARGS((dfd, " dst = %02x:%02x:%02x:%02x:%02x:%02x\n",
eh->h_dest[0], eh->h_dest[1], eh->h_dest[2],
eh->h_dest[3], eh->h_dest[4], eh->h_dest[5]));
DEBUG_ARGS(" src = %02x:%02x:%02x:%02x:%02x:%02x\n",
eh->h_source[0], eh->h_source[1], eh->h_source[2],
eh->h_source[3], eh->h_source[4], eh->h_source[5]);
DEBUG_ARGS(" dst = %02x:%02x:%02x:%02x:%02x:%02x\n",
eh->h_dest[0], eh->h_dest[1], eh->h_dest[2],
eh->h_dest[3], eh->h_dest[4], eh->h_dest[5]);
memcpy(buf + sizeof(struct ethhdr), ifm->m_data, ifm->m_len);
slirp->cb->output(slirp->opaque, buf, ifm->m_len + ETH_HLEN);
return 1;

32
slirp/socket.c
View File

@ -208,7 +208,7 @@ soread(struct socket *so)
}
}
DEBUG_MISC((dfd, " --- soread() disconnected, nn = %d, errno = %d-%s\n", nn, errno,strerror(errno)));
DEBUG_MISC(" --- soread() disconnected, nn = %d, errno = %d-%s\n", nn, errno,strerror(errno));
sofcantrcvmore(so);
if (err == ECONNRESET || err == ECONNREFUSED
@ -237,7 +237,7 @@ soread(struct socket *so)
nn += ret;
}
DEBUG_MISC((dfd, " ... read nn = %d bytes\n", nn));
DEBUG_MISC(" ... read nn = %d bytes\n", nn);
/* Update fields */
sb->sb_cc += nn;
@ -370,7 +370,7 @@ sosendoob(struct socket *so)
n = slirp_send(so, buff, len, (MSG_OOB)); /* |MSG_DONTWAIT)); */
#ifdef DEBUG
if (n != len) {
DEBUG_ERROR((dfd, "Didn't send all data urgently XXXXX\n"));
DEBUG_ERROR("Didn't send all data urgently XXXXX\n");
}
#endif
}
@ -379,7 +379,7 @@ sosendoob(struct socket *so)
return n;
}
so->so_urgc -= n;
DEBUG_MISC((dfd, " ---2 sent %d bytes urgent data, %d urgent bytes left\n", n, so->so_urgc));
DEBUG_MISC(" ---2 sent %d bytes urgent data, %d urgent bytes left\n", n, so->so_urgc);
sb->sb_cc -= n;
sb->sb_rptr += n;
@ -460,7 +460,7 @@ sowrite(struct socket *so)
if (ret > 0)
nn += ret;
}
DEBUG_MISC((dfd, " ... wrote nn = %d bytes\n", nn));
DEBUG_MISC(" ... wrote nn = %d bytes\n", nn);
/* Update sbuf */
sb->sb_cc -= nn;
@ -478,8 +478,8 @@ sowrite(struct socket *so)
return nn;
err_disconnected:
DEBUG_MISC((dfd, " --- sowrite disconnected, so->so_state = %x, errno = %d\n",
so->so_state, errno));
DEBUG_MISC(" --- sowrite disconnected, so->so_state = %x, errno = %d\n",
so->so_state, errno);
sofcantsendmore(so);
tcp_sockclosed(sototcpcb(so));
return -1;
@ -512,8 +512,8 @@ sorecvfrom(struct socket *so)
if(errno == EHOSTUNREACH) code=ICMP_UNREACH_HOST;
else if(errno == ENETUNREACH) code=ICMP_UNREACH_NET;
DEBUG_MISC((dfd," udp icmp rx errno = %d-%s\n",
errno,strerror(errno)));
DEBUG_MISC(" udp icmp rx errno = %d-%s\n",
errno,strerror(errno));
icmp_send_error(so->so_m, ICMP_UNREACH, code, 0, strerror(errno));
} else {
icmp_reflect(so->so_m);
@ -564,8 +564,8 @@ sorecvfrom(struct socket *so)
m->m_len = recvfrom(so->s, m->m_data, len, 0,
(struct sockaddr *)&addr, &addrlen);
DEBUG_MISC((dfd, " did recvfrom %d, errno = %d-%s\n",
m->m_len, errno,strerror(errno)));
DEBUG_MISC(" did recvfrom %d, errno = %d-%s\n",
m->m_len, errno,strerror(errno));
if(m->m_len<0) {
/* Report error as ICMP */
switch (so->so_lfamily) {
@ -579,7 +579,7 @@ sorecvfrom(struct socket *so)
code = ICMP_UNREACH_NET;
}
DEBUG_MISC((dfd, " rx error, tx icmp ICMP_UNREACH:%i\n", code));
DEBUG_MISC(" rx error, tx icmp ICMP_UNREACH:%i\n", code);
icmp_send_error(so->so_m, ICMP_UNREACH, code, 0, strerror(errno));
break;
case AF_INET6:
@ -591,7 +591,7 @@ sorecvfrom(struct socket *so)
code = ICMP6_UNREACH_NO_ROUTE;
}
DEBUG_MISC((dfd, " rx error, tx icmp6 ICMP_UNREACH:%i\n", code));
DEBUG_MISC(" rx error, tx icmp6 ICMP_UNREACH:%i\n", code);
icmp6_send_error(so->so_m, ICMP6_UNREACH, code);
break;
default:
@ -839,9 +839,9 @@ void sotranslate_out(struct socket *so, struct sockaddr_storage *addr)
}
}
DEBUG_MISC((dfd, " addr.sin_port=%d, "
"addr.sin_addr.s_addr=%.16s\n",
ntohs(sin->sin_port), inet_ntoa(sin->sin_addr)));
DEBUG_MISC(" addr.sin_port=%d, "
"addr.sin_addr.s_addr=%.16s\n",
ntohs(sin->sin_port), inet_ntoa(sin->sin_addr));
break;
case AF_INET6:

15
slirp/tcp_input.c
View File

@ -236,8 +236,8 @@ tcp_input(struct mbuf *m, int iphlen, struct socket *inso, unsigned short af)
Slirp *slirp;
DEBUG_CALL("tcp_input");
DEBUG_ARGS((dfd, " m = %p iphlen = %2d inso = %p\n",
m, iphlen, inso));
DEBUG_ARGS(" m = %p iphlen = %2d inso = %p\n",
m, iphlen, inso);
/*
* If called with m == 0, then we're continuing the connect
@ -662,8 +662,8 @@ findso:
(errno != EINPROGRESS) && (errno != EWOULDBLOCK)
) {
uint8_t code;
DEBUG_MISC((dfd, " tcp fconnect errno = %d-%s\n",
errno,strerror(errno)));
DEBUG_MISC(" tcp fconnect errno = %d-%s\n",
errno,strerror(errno));
if(errno == ECONNREFUSED) {
/* ACK the SYN, send RST to refuse the connection */
tcp_respond(tp, ti, m, ti->ti_seq + 1, (tcp_seq) 0,
@ -1032,8 +1032,7 @@ trimthenstep6:
if (SEQ_LEQ(ti->ti_ack, tp->snd_una)) {
if (ti->ti_len == 0 && tiwin == tp->snd_wnd) {
DEBUG_MISC((dfd, " dup ack m = %p so = %p\n",
m, so));
DEBUG_MISC(" dup ack m = %p so = %p\n", m, so);
/*
* If we have outstanding data (other than
* a window probe), this is a completely
@ -1411,7 +1410,7 @@ tcp_dooptions(struct tcpcb *tp, u_char *cp, int cnt, struct tcpiphdr *ti)
int opt, optlen;
DEBUG_CALL("tcp_dooptions");
DEBUG_ARGS((dfd, " tp = %p cnt=%i\n", tp, cnt));
DEBUG_ARGS(" tp = %p cnt=%i\n", tp, cnt);
for (; cnt > 0; cnt -= optlen, cp += optlen) {
opt = cp[0];
@ -1611,7 +1610,7 @@ tcp_mss(struct tcpcb *tp, u_int offer)
(mss - (TCP_RCVSPACE % mss)) :
0));
DEBUG_MISC((dfd, " returning mss = %d\n", mss));
DEBUG_MISC(" returning mss = %d\n", mss);
return mss;
}

2
slirp/tcp_output.c
View File

@ -92,7 +92,7 @@ again:
flags = tcp_outflags[tp->t_state];
DEBUG_MISC((dfd, " --- tcp_output flags = 0x%x\n",flags));
DEBUG_MISC(" --- tcp_output flags = 0x%x\n", flags);
/*
* If in persist timeout with window of 0, send 1 byte.

4
slirp/tcp_subr.c
View File

@ -420,7 +420,7 @@ int tcp_fconnect(struct socket *so, unsigned short af)
qemu_setsockopt(s, IPPROTO_TCP, TCP_NODELAY, &opt, sizeof(opt));
addr = so->fhost.ss;
DEBUG_CALL(" connect()ing")
DEBUG_CALL(" connect()ing");
sotranslate_out(so, &addr);
/* We don't care what port we get */
@ -964,7 +964,7 @@ int tcp_ctl(struct socket *so)
so->chardev = ex_ptr->ex_chardev;
return 1;
}
DEBUG_MISC((dfd, " executing %s\n", ex_ptr->ex_exec));
DEBUG_MISC(" executing %s\n", ex_ptr->ex_exec);
return fork_exec(so, ex_ptr->ex_exec);
}
}

6
slirp/udp.c
View File

@ -172,8 +172,8 @@ udp_input(register struct mbuf *m, int iphlen)
*/
so = socreate(slirp);
if (udp_attach(so, AF_INET) == -1) {
DEBUG_MISC((dfd," udp_attach errno = %d-%s\n",
errno,strerror(errno)));
DEBUG_MISC(" udp_attach errno = %d-%s\n",
errno, strerror(errno));
sofree(so);
goto bad;
}
@ -209,7 +209,7 @@ udp_input(register struct mbuf *m, int iphlen)
m->m_len += iphlen;
m->m_data -= iphlen;
*ip=save_ip;
DEBUG_MISC((dfd,"udp tx errno = %d-%s\n",errno,strerror(errno)));
DEBUG_MISC("udp tx errno = %d-%s\n", errno, strerror(errno));
icmp_send_error(m, ICMP_UNREACH, ICMP_UNREACH_NET, 0,
strerror(errno));
goto bad;

6
slirp/udp6.c
View File

@ -92,8 +92,8 @@ void udp6_input(struct mbuf *m)
/* If there's no socket for this packet, create one. */
so = socreate(slirp);
if (udp_attach(so, AF_INET6) == -1) {
DEBUG_MISC((dfd, " udp6_attach errno = %d-%s\n",
errno, strerror(errno)));
DEBUG_MISC(" udp6_attach errno = %d-%s\n",
errno, strerror(errno));
sofree(so);
goto bad;
}
@ -119,7 +119,7 @@ void udp6_input(struct mbuf *m)
m->m_len += iphlen;
m->m_data -= iphlen;
*ip = save_ip;
DEBUG_MISC((dfd, "udp tx errno = %d-%s\n", errno, strerror(errno)));
DEBUG_MISC("udp tx errno = %d-%s\n", errno, strerror(errno));
icmp6_send_error(m, ICMP6_UNREACH, ICMP6_UNREACH_NO_ROUTE);
goto bad;
}