tests: virtio-9p: add version operation test
[qemu.git] / slirp / ip6_input.c
1 /*
2 * Copyright (c) 2013
3 * Guillaume Subiron, Yann Bordenave, Serigne Modou Wagne.
4 */
5
6 #include "qemu/osdep.h"
7 #include "slirp.h"
8 #include "ip6_icmp.h"
9
10 /*
11 * IP initialization: fill in IP protocol switch table.
12 * All protocols not implemented in kernel go to raw IP protocol handler.
13 */
14 void ip6_init(Slirp *slirp)
15 {
16 icmp6_init(slirp);
17 }
18
19 void ip6_cleanup(Slirp *slirp)
20 {
21 icmp6_cleanup(slirp);
22 }
23
24 void ip6_input(struct mbuf *m)
25 {
26 struct ip6 *ip6;
27 Slirp *slirp = m->slirp;
28
29 if (!slirp->in6_enabled) {
30 goto bad;
31 }
32
33 DEBUG_CALL("ip6_input");
34 DEBUG_ARG("m = %lx", (long)m);
35 DEBUG_ARG("m_len = %d", m->m_len);
36
37 if (m->m_len < sizeof(struct ip6)) {
38 goto bad;
39 }
40
41 ip6 = mtod(m, struct ip6 *);
42
43 if (ip6->ip_v != IP6VERSION) {
44 goto bad;
45 }
46
47 if (ntohs(ip6->ip_pl) > IF_MTU) {
48 icmp6_send_error(m, ICMP6_TOOBIG, 0);
49 goto bad;
50 }
51
52 /* check ip_ttl for a correct ICMP reply */
53 if (ip6->ip_hl == 0) {
54 icmp6_send_error(m, ICMP6_TIMXCEED, ICMP6_TIMXCEED_INTRANS);
55 goto bad;
56 }
57
58 /*
59 * Switch out to protocol's input routine.
60 */
61 switch (ip6->ip_nh) {
62 case IPPROTO_TCP:
63 NTOHS(ip6->ip_pl);
64 tcp_input(m, sizeof(struct ip6), (struct socket *)NULL, AF_INET6);
65 break;
66 case IPPROTO_UDP:
67 udp6_input(m);
68 break;
69 case IPPROTO_ICMPV6:
70 icmp6_input(m);
71 break;
72 default:
73 m_free(m);
74 }
75 return;
76 bad:
77 m_free(m);
78 }