diff options
Diffstat (limited to 'slirp/tcp_subr.c')
| -rw-r--r-- | slirp/tcp_subr.c | 114 |
1 files changed, 88 insertions, 26 deletions
diff --git a/slirp/tcp_subr.c b/slirp/tcp_subr.c index b1aa1f23f4..dbfd2c673b 100644 --- a/slirp/tcp_subr.c +++ b/slirp/tcp_subr.c @@ -76,13 +76,30 @@ tcp_template(struct tcpcb *tp) register struct tcpiphdr *n = &tp->t_template; n->ti_mbuf = NULL; - n->ti_x1 = 0; - n->ti_pr = IPPROTO_TCP; - n->ti_len = htons(sizeof (struct tcpiphdr) - sizeof (struct ip)); - n->ti_src = so->so_faddr; - n->ti_dst = so->so_laddr; - n->ti_sport = so->so_fport; - n->ti_dport = so->so_lport; + memset(&n->ti, 0, sizeof(n->ti)); + n->ti_x0 = 0; + switch (so->so_ffamily) { + case AF_INET: + n->ti_pr = IPPROTO_TCP; + n->ti_len = htons(sizeof(struct tcphdr)); + n->ti_src = so->so_faddr; + n->ti_dst = so->so_laddr; + n->ti_sport = so->so_fport; + n->ti_dport = so->so_lport; + break; + + case AF_INET6: + n->ti_nh6 = IPPROTO_TCP; + n->ti_len = htons(sizeof(struct tcphdr)); + n->ti_src6 = so->so_faddr6; + n->ti_dst6 = so->so_laddr6; + n->ti_sport = so->so_fport6; + n->ti_dport = so->so_lport6; + break; + + default: + g_assert_not_reached(); + } n->ti_seq = 0; n->ti_ack = 0; @@ -109,7 +126,7 @@ tcp_template(struct tcpcb *tp) */ void tcp_respond(struct tcpcb *tp, struct tcpiphdr *ti, struct mbuf *m, - tcp_seq ack, tcp_seq seq, int flags) + tcp_seq ack, tcp_seq seq, int flags, unsigned short af) { register int tlen; int win = 0; @@ -131,6 +148,7 @@ tcp_respond(struct tcpcb *tp, struct tcpiphdr *ti, struct mbuf *m, m->m_data += IF_MAXLINKHDR; *mtod(m, struct tcpiphdr *) = *ti; ti = mtod(m, struct tcpiphdr *); + memset(&ti->ti, 0, sizeof(ti->ti)); flags = TH_ACK; } else { /* @@ -142,16 +160,26 @@ tcp_respond(struct tcpcb *tp, struct tcpiphdr *ti, struct mbuf *m, m->m_len = sizeof (struct tcpiphdr); tlen = 0; #define xchg(a,b,type) { type t; t=a; a=b; b=t; } - xchg(ti->ti_dst.s_addr, ti->ti_src.s_addr, uint32_t); - xchg(ti->ti_dport, ti->ti_sport, uint16_t); + switch (af) { + case AF_INET: + xchg(ti->ti_dst.s_addr, ti->ti_src.s_addr, uint32_t); + xchg(ti->ti_dport, ti->ti_sport, uint16_t); + break; + case AF_INET6: + xchg(ti->ti_dst6, ti->ti_src6, struct in6_addr); + xchg(ti->ti_dport, ti->ti_sport, uint16_t); + break; + default: + g_assert_not_reached(); + } #undef xchg } ti->ti_len = htons((u_short)(sizeof (struct tcphdr) + tlen)); tlen += sizeof (struct tcpiphdr); m->m_len = tlen; - ti->ti_mbuf = NULL; - ti->ti_x1 = 0; + ti->ti_mbuf = NULL; + ti->ti_x0 = 0; ti->ti_seq = htonl(seq); ti->ti_ack = htonl(ack); ti->ti_x2 = 0; @@ -164,14 +192,49 @@ tcp_respond(struct tcpcb *tp, struct tcpiphdr *ti, struct mbuf *m, ti->ti_urp = 0; ti->ti_sum = 0; ti->ti_sum = cksum(m, tlen); - ((struct ip *)ti)->ip_len = tlen; - - if(flags & TH_RST) - ((struct ip *)ti)->ip_ttl = MAXTTL; - else - ((struct ip *)ti)->ip_ttl = IPDEFTTL; - (void) ip_output((struct socket *)0, m); + struct tcpiphdr tcpiph_save = *(mtod(m, struct tcpiphdr *)); + struct ip *ip; + struct ip6 *ip6; + + switch (af) { + case AF_INET: + m->m_data += sizeof(struct tcpiphdr) - sizeof(struct tcphdr) + - sizeof(struct ip); + m->m_len -= sizeof(struct tcpiphdr) - sizeof(struct tcphdr) + - sizeof(struct ip); + ip = mtod(m, struct ip *); + ip->ip_len = tlen; + ip->ip_dst = tcpiph_save.ti_dst; + ip->ip_src = tcpiph_save.ti_src; + ip->ip_p = tcpiph_save.ti_pr; + + if (flags & TH_RST) { + ip->ip_ttl = MAXTTL; + } else { + ip->ip_ttl = IPDEFTTL; + } + + ip_output(NULL, m); + break; + + case AF_INET6: + m->m_data += sizeof(struct tcpiphdr) - sizeof(struct tcphdr) + - sizeof(struct ip6); + m->m_len -= sizeof(struct tcpiphdr) - sizeof(struct tcphdr) + - sizeof(struct ip6); + ip6 = mtod(m, struct ip6 *); + ip6->ip_pl = tlen; + ip6->ip_dst = tcpiph_save.ti_dst6; + ip6->ip_src = tcpiph_save.ti_src6; + ip6->ip_nh = tcpiph_save.ti_nh6; + + ip6_output(NULL, m, 0); + break; + + default: + g_assert_not_reached(); + } } /* @@ -190,7 +253,7 @@ tcp_newtcpcb(struct socket *so) memset((char *) tp, 0, sizeof(struct tcpcb)); tp->seg_next = tp->seg_prev = (struct tcpiphdr*)tp; - tp->t_maxseg = TCP_MSS; + tp->t_maxseg = (so->so_ffamily == AF_INET) ? TCP_MSS : TCP6_MSS; tp->t_flags = TCP_DO_RFC1323 ? (TF_REQ_SCALE|TF_REQ_TSTMP) : 0; tp->t_socket = so; @@ -375,8 +438,8 @@ void tcp_connect(struct socket *inso) { Slirp *slirp = inso->slirp; struct socket *so; - struct sockaddr_in addr; - socklen_t addrlen = sizeof(struct sockaddr_in); + struct sockaddr_storage addr; + socklen_t addrlen = sizeof(struct sockaddr_storage); struct tcpcb *tp; int s, opt; @@ -401,9 +464,8 @@ void tcp_connect(struct socket *inso) free(so); /* NOT sofree */ return; } - so->so_lfamily = AF_INET; - so->so_laddr = inso->so_laddr; - so->so_lport = inso->so_lport; + so->lhost = inso->lhost; + so->so_ffamily = inso->so_ffamily; } tcp_mss(sototcpcb(so), 0); @@ -419,7 +481,7 @@ void tcp_connect(struct socket *inso) qemu_setsockopt(s, SOL_SOCKET, SO_OOBINLINE, &opt, sizeof(int)); socket_set_nodelay(s); - so->fhost.sin = addr; + so->fhost.ss = addr; sotranslate_accept(so); /* Close the accept() socket, set right state */ |