From 437fd90c0250dee670290f9b714253671a990160 Mon Sep 17 00:00:00 2001 From: José Pekkarinen Date: Wed, 18 May 2016 13:18:31 +0300 Subject: These changes are the raw update to qemu-2.6. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Collission happened in the following patches: migration: do cleanup operation after completion(738df5b9) Bug fix.(1750c932f86) kvmclock: add a new function to update env->tsc.(b52baab2) The code provided by the patches was already in the upstreamed version. Change-Id: I3cc11841a6a76ae20887b2e245710199e1ea7f9a Signed-off-by: José Pekkarinen --- qemu/slirp/tcp_input.c | 260 ++++++++++++++++++++++++++++++++++++------------- 1 file changed, 194 insertions(+), 66 deletions(-) (limited to 'qemu/slirp/tcp_input.c') diff --git a/qemu/slirp/tcp_input.c b/qemu/slirp/tcp_input.c index f946db8dc..e2b5d4ebb 100644 --- a/qemu/slirp/tcp_input.c +++ b/qemu/slirp/tcp_input.c @@ -38,6 +38,7 @@ * terms and conditions of the copyright. */ +#include "qemu/osdep.h" #include #include "ip_icmp.h" @@ -213,9 +214,10 @@ present: * protocol specification dated September, 1981 very closely. */ void -tcp_input(struct mbuf *m, int iphlen, struct socket *inso) +tcp_input(struct mbuf *m, int iphlen, struct socket *inso, unsigned short af) { - struct ip save_ip, *ip; + struct ip save_ip, *ip; + struct ip6 save_ip6, *ip6; register struct tcpiphdr *ti; caddr_t optp = NULL; int optlen = 0; @@ -227,12 +229,15 @@ tcp_input(struct mbuf *m, int iphlen, struct socket *inso) int iss = 0; u_long tiwin; int ret; + struct sockaddr_storage lhost, fhost; + struct sockaddr_in *lhost4, *fhost4; + struct sockaddr_in6 *lhost6, *fhost6; struct ex_list *ex_ptr; Slirp *slirp; DEBUG_CALL("tcp_input"); - DEBUG_ARGS((dfd, " m = %8lx iphlen = %2d inso = %lx\n", - (long )m, iphlen, (long )inso )); + DEBUG_ARGS((dfd, " m = %p iphlen = %2d inso = %p\n", + m, iphlen, inso)); /* * If called with m == 0, then we're continuing the connect @@ -253,37 +258,83 @@ tcp_input(struct mbuf *m, int iphlen, struct socket *inso) } slirp = m->slirp; - /* - * Get IP and TCP header together in first mbuf. - * Note: IP leaves IP header in first mbuf. - */ - ti = mtod(m, struct tcpiphdr *); - if (iphlen > sizeof(struct ip )) { - ip_stripoptions(m, (struct mbuf *)0); - iphlen=sizeof(struct ip ); - } - /* XXX Check if too short */ + ip = mtod(m, struct ip *); + ip6 = mtod(m, struct ip6 *); + switch (af) { + case AF_INET: + if (iphlen > sizeof(struct ip)) { + ip_stripoptions(m, (struct mbuf *)0); + iphlen = sizeof(struct ip); + } + /* XXX Check if too short */ - /* - * Save a copy of the IP header in case we want restore it - * for sending an ICMP error message in response. - */ - ip=mtod(m, struct ip *); - save_ip = *ip; - save_ip.ip_len+= iphlen; - /* - * Checksum extended TCP header and data. - */ - tlen = ((struct ip *)ti)->ip_len; - tcpiphdr2qlink(ti)->next = tcpiphdr2qlink(ti)->prev = NULL; - memset(&ti->ti_i.ih_mbuf, 0 , sizeof(struct mbuf_ptr)); - ti->ti_x1 = 0; - ti->ti_len = htons((uint16_t)tlen); - len = sizeof(struct ip ) + tlen; - if(cksum(m, len)) { - goto drop; + /* + * Save a copy of the IP header in case we want restore it + * for sending an ICMP error message in response. + */ + save_ip = *ip; + save_ip.ip_len += iphlen; + + /* + * Get IP and TCP header together in first mbuf. + * Note: IP leaves IP header in first mbuf. + */ + m->m_data -= sizeof(struct tcpiphdr) - sizeof(struct ip) + - sizeof(struct tcphdr); + m->m_len += sizeof(struct tcpiphdr) - sizeof(struct ip) + - sizeof(struct tcphdr); + ti = mtod(m, struct tcpiphdr *); + + /* + * Checksum extended TCP header and data. + */ + tlen = ip->ip_len; + tcpiphdr2qlink(ti)->next = tcpiphdr2qlink(ti)->prev = NULL; + memset(&ti->ih_mbuf, 0 , sizeof(struct mbuf_ptr)); + memset(&ti->ti, 0, sizeof(ti->ti)); + ti->ti_x0 = 0; + ti->ti_src = save_ip.ip_src; + ti->ti_dst = save_ip.ip_dst; + ti->ti_pr = save_ip.ip_p; + ti->ti_len = htons((uint16_t)tlen); + break; + + case AF_INET6: + /* + * Save a copy of the IP header in case we want restore it + * for sending an ICMP error message in response. + */ + save_ip6 = *ip6; + /* + * Get IP and TCP header together in first mbuf. + * Note: IP leaves IP header in first mbuf. + */ + m->m_data -= sizeof(struct tcpiphdr) - (sizeof(struct ip6) + + sizeof(struct tcphdr)); + m->m_len += sizeof(struct tcpiphdr) - (sizeof(struct ip6) + + sizeof(struct tcphdr)); + ti = mtod(m, struct tcpiphdr *); + + tlen = ip6->ip_pl; + tcpiphdr2qlink(ti)->next = tcpiphdr2qlink(ti)->prev = NULL; + memset(&ti->ih_mbuf, 0 , sizeof(struct mbuf_ptr)); + memset(&ti->ti, 0, sizeof(ti->ti)); + ti->ti_x0 = 0; + ti->ti_src6 = save_ip6.ip_src; + ti->ti_dst6 = save_ip6.ip_dst; + ti->ti_nh6 = save_ip6.ip_nh; + ti->ti_len = htons((uint16_t)tlen); + break; + + default: + g_assert_not_reached(); + } + + len = ((sizeof(struct tcpiphdr) - sizeof(struct tcphdr)) + tlen); + if (cksum(m, len)) { + goto drop; } /* @@ -320,17 +371,31 @@ tcp_input(struct mbuf *m, int iphlen, struct socket *inso) * Locate pcb for segment. */ findso: - so = slirp->tcp_last_so; - if (so->so_fport != ti->ti_dport || - so->so_lport != ti->ti_sport || - so->so_laddr.s_addr != ti->ti_src.s_addr || - so->so_faddr.s_addr != ti->ti_dst.s_addr) { - so = solookup(&slirp->tcb, ti->ti_src, ti->ti_sport, - ti->ti_dst, ti->ti_dport); - if (so) - slirp->tcp_last_so = so; + lhost.ss_family = af; + fhost.ss_family = af; + switch (af) { + case AF_INET: + lhost4 = (struct sockaddr_in *) &lhost; + lhost4->sin_addr = ti->ti_src; + lhost4->sin_port = ti->ti_sport; + fhost4 = (struct sockaddr_in *) &fhost; + fhost4->sin_addr = ti->ti_dst; + fhost4->sin_port = ti->ti_dport; + break; + case AF_INET6: + lhost6 = (struct sockaddr_in6 *) &lhost; + lhost6->sin6_addr = ti->ti_src6; + lhost6->sin6_port = ti->ti_sport; + fhost6 = (struct sockaddr_in6 *) &fhost; + fhost6->sin6_addr = ti->ti_dst6; + fhost6->sin6_port = ti->ti_dport; + break; + default: + g_assert_not_reached(); } + so = solookup(&slirp->tcp_last_so, &slirp->tcb, &lhost, &fhost); + /* * If the state is CLOSED (i.e., TCB does not exist) then * all data in the incoming segment is discarded. @@ -374,13 +439,21 @@ findso: sbreserve(&so->so_snd, TCP_SNDSPACE); sbreserve(&so->so_rcv, TCP_RCVSPACE); - so->so_laddr = ti->ti_src; - so->so_lport = ti->ti_sport; - so->so_faddr = ti->ti_dst; - so->so_fport = ti->ti_dport; - - if ((so->so_iptos = tcp_tos(so)) == 0) - so->so_iptos = ((struct ip *)ti)->ip_tos; + so->lhost.ss = lhost; + so->fhost.ss = fhost; + + so->so_iptos = tcp_tos(so); + if (so->so_iptos == 0) { + switch (af) { + case AF_INET: + so->so_iptos = ((struct ip *)ti)->ip_tos; + break; + case AF_INET6: + break; + default: + g_assert_not_reached(); + } + } tp = sototcpcb(so); tp->t_state = TCPS_LISTEN; @@ -559,8 +632,9 @@ findso: * If this is destined for the control address, then flag to * tcp_ctl once connected, otherwise connect */ - if ((so->so_faddr.s_addr & slirp->vnetwork_mask.s_addr) == - slirp->vnetwork_addr.s_addr) { + if (af == AF_INET && + (so->so_faddr.s_addr & slirp->vnetwork_mask.s_addr) == + slirp->vnetwork_addr.s_addr) { if (so->so_faddr.s_addr != slirp->vhost_addr.s_addr && so->so_faddr.s_addr != slirp->vnameserver_addr.s_addr) { /* May be an add exec */ @@ -584,24 +658,60 @@ findso: goto cont_input; } - if((tcp_fconnect(so) == -1) && (errno != EINPROGRESS) && (errno != EWOULDBLOCK)) { - u_char code=ICMP_UNREACH_NET; + if ((tcp_fconnect(so, so->so_ffamily) == -1) && + (errno != EAGAIN) && + (errno != EINPROGRESS) && (errno != EWOULDBLOCK) + ) { + uint8_t code; DEBUG_MISC((dfd, " 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, - TH_RST|TH_ACK); + tcp_respond(tp, ti, m, ti->ti_seq + 1, (tcp_seq) 0, + TH_RST | TH_ACK, af); } else { - if(errno == EHOSTUNREACH) code=ICMP_UNREACH_HOST; + switch (af) { + case AF_INET: + code = ICMP_UNREACH_NET; + if (errno == EHOSTUNREACH) { + code = ICMP_UNREACH_HOST; + } + break; + case AF_INET6: + code = ICMP6_UNREACH_NO_ROUTE; + if (errno == EHOSTUNREACH) { + code = ICMP6_UNREACH_ADDRESS; + } + break; + default: + g_assert_not_reached(); + } HTONL(ti->ti_seq); /* restore tcp header */ HTONL(ti->ti_ack); HTONS(ti->ti_win); HTONS(ti->ti_urp); m->m_data -= sizeof(struct tcpiphdr)+off-sizeof(struct tcphdr); m->m_len += sizeof(struct tcpiphdr)+off-sizeof(struct tcphdr); - *ip=save_ip; - icmp_error(m, ICMP_UNREACH,code, 0,strerror(errno)); + switch (af) { + case AF_INET: + m->m_data += sizeof(struct tcpiphdr) - sizeof(struct ip) + - sizeof(struct tcphdr); + m->m_len -= sizeof(struct tcpiphdr) - sizeof(struct ip) + - sizeof(struct tcphdr); + *ip = save_ip; + icmp_send_error(m, ICMP_UNREACH, code, 0, strerror(errno)); + break; + case AF_INET6: + m->m_data += sizeof(struct tcpiphdr) - (sizeof(struct ip6) + + sizeof(struct tcphdr)); + m->m_len -= sizeof(struct tcpiphdr) - (sizeof(struct ip6) + + sizeof(struct tcphdr)); + *ip6 = save_ip6; + icmp6_send_error(m, ICMP6_UNREACH, code); + break; + default: + g_assert_not_reached(); + } } tcp_close(tp); m_free(m); @@ -616,6 +726,12 @@ findso: so->so_ti = ti; tp->t_timer[TCPT_KEEP] = TCPTV_KEEP_INIT; tp->t_state = TCPS_SYN_RECEIVED; + /* + * Initialize receive sequence numbers now so that we can send a + * valid RST if the remote end rejects our connection. + */ + tp->irs = ti->ti_seq; + tcp_rcvseqinit(tp); tcp_template(tp); } return; @@ -917,8 +1033,8 @@ 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 = %lx so = %lx\n", - (long )m, (long )so)); + DEBUG_MISC((dfd, " dup ack m = %p so = %p\n", + m, so)); /* * If we have outstanding data (other than * a window probe), this is a completely @@ -1273,11 +1389,11 @@ dropafterack: dropwithreset: /* reuses m if m!=NULL, m_free() unnecessary */ if (tiflags & TH_ACK) - tcp_respond(tp, ti, m, (tcp_seq)0, ti->ti_ack, TH_RST); + tcp_respond(tp, ti, m, (tcp_seq)0, ti->ti_ack, TH_RST, af); else { if (tiflags & TH_SYN) ti->ti_len++; - tcp_respond(tp, ti, m, ti->ti_seq+ti->ti_len, (tcp_seq)0, - TH_RST|TH_ACK); + tcp_respond(tp, ti, m, ti->ti_seq + ti->ti_len, (tcp_seq) 0, + TH_RST | TH_ACK, af); } return; @@ -1296,7 +1412,7 @@ tcp_dooptions(struct tcpcb *tp, u_char *cp, int cnt, struct tcpiphdr *ti) int opt, optlen; DEBUG_CALL("tcp_dooptions"); - DEBUG_ARGS((dfd, " tp = %lx cnt=%i\n", (long)tp, cnt)); + DEBUG_ARGS((dfd, " tp = %p cnt=%i\n", tp, cnt)); for (; cnt > 0; cnt -= optlen, cp += optlen) { opt = cp[0]; @@ -1377,7 +1493,7 @@ tcp_xmit_timer(register struct tcpcb *tp, int rtt) register short delta; DEBUG_CALL("tcp_xmit_timer"); - DEBUG_ARG("tp = %lx", (long)tp); + DEBUG_ARG("tp = %p", tp); DEBUG_ARG("rtt = %d", rtt); if (tp->t_srtt != 0) { @@ -1465,10 +1581,22 @@ tcp_mss(struct tcpcb *tp, u_int offer) int mss; DEBUG_CALL("tcp_mss"); - DEBUG_ARG("tp = %lx", (long)tp); + DEBUG_ARG("tp = %p", tp); DEBUG_ARG("offer = %d", offer); - mss = min(IF_MTU, IF_MRU) - sizeof(struct tcpiphdr); + switch (so->so_ffamily) { + case AF_INET: + mss = min(IF_MTU, IF_MRU) - sizeof(struct tcphdr) + + sizeof(struct ip); + break; + case AF_INET6: + mss = min(IF_MTU, IF_MRU) - sizeof(struct tcphdr) + + sizeof(struct ip6); + break; + default: + g_assert_not_reached(); + } + if (offer) mss = min(mss, offer); mss = max(mss, 32); -- cgit 1.2.3-korg