+/*
+ * libslirp glue
+ *
+ * Copyright (c) 2004-2008 Fabrice Bellard
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include "qemu-common.h"
+#include "qemu-char.h"
#include "slirp.h"
+#include "hw/hw.h"
/* host address */
struct in_addr our_addr;
/* address for slirp virtual addresses */
struct in_addr special_addr;
+/* virtual address alias for host */
+struct in_addr alias_addr;
-const uint8_t special_ethaddr[6] = {
+static const uint8_t special_ethaddr[6] = {
0x52, 0x54, 0x00, 0x12, 0x35, 0x00
};
+/* ARP cache for the guest IP addresses (XXX: allow many entries) */
uint8_t client_ethaddr[6];
+static struct in_addr client_ipaddr;
-int do_slowtimo;
+static const uint8_t zero_ethaddr[6] = { 0, 0, 0, 0, 0, 0 };
+
+const char *slirp_special_ip = CTL_SPECIAL;
+int slirp_restrict;
+static int do_slowtimo;
int link_up;
struct timeval tt;
FILE *lfd;
+struct ex_list *exec_list;
/* XXX: suppress those select globals */
fd_set *global_readfds, *global_writefds, *global_xfds;
+char slirp_hostname[33];
+
#ifdef _WIN32
static int get_dns_addr(struct in_addr *pdns_addr)
{
- /* XXX: add it */
- return -1;
+ FIXED_INFO *FixedInfo=NULL;
+ ULONG BufLen;
+ DWORD ret;
+ IP_ADDR_STRING *pIPAddr;
+ struct in_addr tmp_addr;
+
+ FixedInfo = (FIXED_INFO *)GlobalAlloc(GPTR, sizeof(FIXED_INFO));
+ BufLen = sizeof(FIXED_INFO);
+
+ if (ERROR_BUFFER_OVERFLOW == GetNetworkParams(FixedInfo, &BufLen)) {
+ if (FixedInfo) {
+ GlobalFree(FixedInfo);
+ FixedInfo = NULL;
+ }
+ FixedInfo = GlobalAlloc(GPTR, BufLen);
+ }
+
+ if ((ret = GetNetworkParams(FixedInfo, &BufLen)) != ERROR_SUCCESS) {
+ printf("GetNetworkParams failed. ret = %08x\n", (u_int)ret );
+ if (FixedInfo) {
+ GlobalFree(FixedInfo);
+ FixedInfo = NULL;
+ }
+ return -1;
+ }
+
+ pIPAddr = &(FixedInfo->DnsServerList);
+ inet_aton(pIPAddr->IpAddress.String, &tmp_addr);
+ *pdns_addr = tmp_addr;
+#if 0
+ printf( "DNS Servers:\n" );
+ printf( "DNS Addr:%s\n", pIPAddr->IpAddress.String );
+
+ pIPAddr = FixedInfo -> DnsServerList.Next;
+ while ( pIPAddr ) {
+ printf( "DNS Addr:%s\n", pIPAddr ->IpAddress.String );
+ pIPAddr = pIPAddr ->Next;
+ }
+#endif
+ if (FixedInfo) {
+ GlobalFree(FixedInfo);
+ FixedInfo = NULL;
+ }
+ return 0;
}
#else
static int get_dns_addr(struct in_addr *pdns_addr)
{
char buff[512];
- char buff2[256];
+ char buff2[257];
FILE *f;
int found = 0;
struct in_addr tmp_addr;
-
+
f = fopen("/etc/resolv.conf", "r");
if (!f)
return -1;
+#ifdef DEBUG
lprint("IP address of your DNS(s): ");
+#endif
while (fgets(buff, 512, f) != NULL) {
if (sscanf(buff, "nameserver%*[ \t]%256s", buff2) == 1) {
if (!inet_aton(buff2, &tmp_addr))
/* If it's the first one, set it to dns_addr */
if (!found)
*pdns_addr = tmp_addr;
+#ifdef DEBUG
else
lprint(", ");
+#endif
if (++found > 3) {
+#ifdef DEBUG
lprint("(more)");
+#endif
break;
- } else
+ }
+#ifdef DEBUG
+ else
lprint("%s", inet_ntoa(tmp_addr));
+#endif
}
}
+ fclose(f);
if (!found)
return -1;
return 0;
#endif
-void slirp_init(void)
+#ifdef _WIN32
+static void slirp_cleanup(void)
+{
+ WSACleanup();
+}
+#endif
+
+static void slirp_state_save(QEMUFile *f, void *opaque);
+static int slirp_state_load(QEMUFile *f, void *opaque, int version_id);
+
+void slirp_init(int restricted, const char *special_ip)
{
// debug_init("/tmp/slirp.log", DEBUG_DEFAULT);
+#ifdef _WIN32
+ {
+ WSADATA Data;
+ WSAStartup(MAKEWORD(2,0), &Data);
+ atexit(slirp_cleanup);
+ }
+#endif
+
link_up = 1;
+ slirp_restrict = restricted;
if_init();
ip_init();
m_init();
/* set default addresses */
- getouraddr();
inet_aton("127.0.0.1", &loopback_addr);
if (get_dns_addr(&dns_addr) < 0) {
- fprintf(stderr, "Could not get DNS address\n");
- exit(1);
+ dns_addr = loopback_addr;
+ fprintf (stderr, "Warning: No DNS servers found\n");
}
- inet_aton(CTL_SPECIAL, &special_addr);
+ if (special_ip)
+ slirp_special_ip = special_ip;
+
+ inet_aton(slirp_special_ip, &special_addr);
+ alias_addr.s_addr = special_addr.s_addr | htonl(CTL_ALIAS);
+ getouraddr();
+ register_savevm("slirp", 0, 1, slirp_state_save, slirp_state_load, NULL);
}
#define CONN_CANFSEND(so) (((so)->so_state & (SS_FCANTSENDMORE|SS_ISFCONNECTED)) == SS_ISFCONNECTED)
/*
* curtime kept to an accuracy of 1ms
*/
+#ifdef _WIN32
+static void updtime(void)
+{
+ struct _timeb tb;
+
+ _ftime(&tb);
+ curtime = (u_int)tb.time * (u_int)1000;
+ curtime += (u_int)tb.millitm;
+}
+#else
static void updtime(void)
{
- gettimeofday(&tt, 0);
-
+ gettimeofday(&tt, NULL);
+
curtime = (u_int)tt.tv_sec * (u_int)1000;
curtime += (u_int)tt.tv_usec / (u_int)1000;
-
+
if ((tt.tv_usec % 1000) >= 500)
curtime++;
}
+#endif
-void slirp_select_fill(int *pnfds,
+void slirp_select_fill(int *pnfds,
fd_set *readfds, fd_set *writefds, fd_set *xfds)
{
struct socket *so, *so_next;
global_readfds = NULL;
global_writefds = NULL;
global_xfds = NULL;
-
+
nfds = *pnfds;
/*
* First, TCP sockets
*/
do_slowtimo = 0;
if (link_up) {
- /*
+ /*
* *_slowtimo needs calling if there are IP fragments
* in the fragment queue, or there are TCP connections active
*/
do_slowtimo = ((tcb.so_next != &tcb) ||
- ((struct ipasfrag *)&ipq != (struct ipasfrag *)ipq.next));
-
+ (&ipq.ip_link != ipq.ip_link.next));
+
for (so = tcb.so_next; so != &tcb; so = so_next) {
so_next = so->so_next;
-
+
/*
* See if we need a tcp_fasttimo
*/
if (time_fasttimo == 0 && so->so_tcpcb->t_flags & TF_DELACK)
time_fasttimo = curtime; /* Flag when we want a fasttimo */
-
+
/*
* NOFDREF can include still connecting to local-host,
* newly socreated() sockets etc. Don't want to select these.
*/
if (so->so_state & SS_NOFDREF || so->s == -1)
continue;
-
+
/*
* Set for reading sockets which are accepting
*/
UPD_NFDS(so->s);
continue;
}
-
+
/*
* Set for writing sockets which are connecting
*/
UPD_NFDS(so->s);
continue;
}
-
+
/*
* Set for writing if we are connected, can send more, and
* we have something to send
FD_SET(so->s, writefds);
UPD_NFDS(so->s);
}
-
+
/*
* Set for reading (and urgent data) if we are connected, can
* receive more, and we have room for it XXX /2 ?
UPD_NFDS(so->s);
}
}
-
+
/*
* UDP sockets
*/
for (so = udb.so_next; so != &udb; so = so_next) {
so_next = so->so_next;
-
+
/*
* See if it's timed out
*/
} else
do_slowtimo = 1; /* Let socket expire */
}
-
+
/*
* When UDP packets are received from over the
* link, they're sendto()'d straight away, so
}
}
}
-
+
/*
* Setup timeout to use minimum CPU usage, especially when idle
*/
-
- /*
+
+ /*
* First, see the timeout needed by *timo
*/
timeout.tv_sec = 0;
timeout.tv_usec = 0;
else if (timeout.tv_usec > 510000)
timeout.tv_usec = 510000;
-
+
/* Can only fasttimo if we also slowtimo */
if (time_fasttimo) {
tmp_time = (200 - (curtime - time_fasttimo)) * 1000;
if (tmp_time < 0)
tmp_time = 0;
-
+
/* Choose the smallest of the 2 */
if (tmp_time < timeout.tv_usec)
timeout.tv_usec = (u_int)tmp_time;
}
}
*pnfds = nfds;
-}
+}
void slirp_select_poll(fd_set *readfds, fd_set *writefds, fd_set *xfds)
{
/* Update time */
updtime();
-
+
/*
- * See if anything has timed out
+ * See if anything has timed out
*/
if (link_up) {
- if (time_fasttimo && ((curtime - time_fasttimo) >= 199)) {
+ if (time_fasttimo && ((curtime - time_fasttimo) >= 2)) {
tcp_fasttimo();
time_fasttimo = 0;
}
last_slowtimo = curtime;
}
}
-
+
/*
* Check sockets
*/
*/
for (so = tcb.so_next; so != &tcb; so = so_next) {
so_next = so->so_next;
-
+
/*
* FD_ISSET is meaningless on these sockets
* (and they can crash the program)
*/
if (so->so_state & SS_NOFDREF || so->s == -1)
continue;
-
+
/*
* Check for URG data
* This will soread as well, so no need to
continue;
} /* else */
ret = soread(so);
-
+
/* Output it if we read something */
if (ret > 0)
tcp_output(sototcpcb(so));
}
-
+
/*
* Check sockets for writing
*/
if (so->so_state & SS_ISFCONNECTING) {
/* Connected */
so->so_state &= ~SS_ISFCONNECTING;
-
- ret = write(so->s, &ret, 0);
+
+ ret = send(so->s, (const void *) &ret, 0, 0);
if (ret < 0) {
/* XXXXX Must fix, zero bytes is a NOP */
if (errno == EAGAIN || errno == EWOULDBLOCK ||
errno == EINPROGRESS || errno == ENOTCONN)
continue;
-
+
/* else failed */
so->so_state = SS_NOFDREF;
}
/* else so->so_state &= ~SS_ISFCONNECTING; */
-
+
/*
* Continue tcp_input
*/
} else
ret = sowrite(so);
/*
- * XXXXX If we wrote something (a lot), there
+ * XXXXX If we wrote something (a lot), there
* could be a need for a window update.
* In the worst case, the remote will send
* a window probe to get things going again
*/
}
-
+
/*
* Probe a still-connecting, non-blocking socket
* to check if it's still alive
*/
#ifdef PROBE_CONN
if (so->so_state & SS_ISFCONNECTING) {
- ret = read(so->s, (char *)&ret, 0);
-
+ ret = recv(so->s, (char *)&ret, 0,0);
+
if (ret < 0) {
/* XXX */
if (errno == EAGAIN || errno == EWOULDBLOCK ||
errno == EINPROGRESS || errno == ENOTCONN)
continue; /* Still connecting, continue */
-
+
/* else failed */
so->so_state = SS_NOFDREF;
-
+
/* tcp_input will take care of it */
} else {
- ret = write(so->s, &ret, 0);
+ ret = send(so->s, &ret, 0,0);
if (ret < 0) {
/* XXX */
if (errno == EAGAIN || errno == EWOULDBLOCK ||
so->so_state = SS_NOFDREF;
} else
so->so_state &= ~SS_ISFCONNECTING;
-
+
}
tcp_input((struct mbuf *)NULL, sizeof(struct ip),so);
} /* SS_ISFCONNECTING */
#endif
}
-
+
/*
* Now UDP sockets.
* Incoming packets are sent straight away, they're not buffered.
*/
for (so = udb.so_next; so != &udb; so = so_next) {
so_next = so->so_next;
-
+
if (so->s != -1 && FD_ISSET(so->s, readfds)) {
sorecvfrom(so);
}
}
}
-
+
/*
* See if we can start outputting
*/
if (if_queued && link_up)
if_start();
+
+ /* clear global file descriptor sets.
+ * these reside on the stack in vl.c
+ * so they're unusable if we're not in
+ * slirp_select_fill or slirp_select_poll.
+ */
+ global_readfds = NULL;
+ global_writefds = NULL;
+ global_xfds = NULL;
}
#define ETH_ALEN 6
#define ARPOP_REQUEST 1 /* ARP request */
#define ARPOP_REPLY 2 /* ARP reply */
-struct ethhdr
+struct ethhdr
{
unsigned char h_dest[ETH_ALEN]; /* destination eth addr */
unsigned char h_source[ETH_ALEN]; /* source ether addr */
unsigned char ar_tip[4]; /* target IP address */
};
-void arp_input(const uint8_t *pkt, int pkt_len)
+static void arp_input(const uint8_t *pkt, int pkt_len)
{
struct ethhdr *eh = (struct ethhdr *)pkt;
struct arphdr *ah = (struct arphdr *)(pkt + ETH_HLEN);
struct ethhdr *reh = (struct ethhdr *)arp_reply;
struct arphdr *rah = (struct arphdr *)(arp_reply + ETH_HLEN);
int ar_op;
+ struct ex_list *ex_ptr;
ar_op = ntohs(ah->ar_op);
switch(ar_op) {
case ARPOP_REQUEST:
- if (!memcmp(ah->ar_tip, &special_addr, 3) &&
- (ah->ar_tip[3] == CTL_DNS || ah->ar_tip[3] == CTL_ALIAS)) {
-
+ if (!memcmp(ah->ar_tip, &special_addr, 3)) {
+ if (ah->ar_tip[3] == CTL_DNS || ah->ar_tip[3] == CTL_ALIAS)
+ goto arp_ok;
+ for (ex_ptr = exec_list; ex_ptr; ex_ptr = ex_ptr->ex_next) {
+ if (ex_ptr->ex_addr == ah->ar_tip[3])
+ goto arp_ok;
+ }
+ return;
+ arp_ok:
/* XXX: make an ARP request to have the client address */
memcpy(client_ethaddr, eh->h_source, ETH_ALEN);
slirp_output(arp_reply, sizeof(arp_reply));
}
break;
+ case ARPOP_REPLY:
+ /* reply to request of client mac address ? */
+ if (!memcmp(client_ethaddr, zero_ethaddr, ETH_ALEN) &&
+ !memcmp(ah->ar_sip, &client_ipaddr.s_addr, 4)) {
+ memcpy(client_ethaddr, ah->ar_sha, ETH_ALEN);
+ }
+ break;
default:
break;
}
if (pkt_len < ETH_HLEN)
return;
-
+
proto = ntohs(*(uint16_t *)(pkt + 12));
switch(proto) {
case ETH_P_ARP:
m = m_get();
if (!m)
return;
- m->m_len = pkt_len;
- memcpy(m->m_data, pkt, pkt_len);
+ /* Note: we add to align the IP header */
+ if (M_FREEROOM(m) < pkt_len + 2) {
+ m_inc(m, pkt_len + 2);
+ }
+ m->m_len = pkt_len + 2;
+ memcpy(m->m_data + 2, pkt, pkt_len);
- m->m_data += ETH_HLEN;
- m->m_len -= ETH_HLEN;
+ m->m_data += 2 + ETH_HLEN;
+ m->m_len -= 2 + ETH_HLEN;
ip_input(m);
break;
if (ip_data_len + ETH_HLEN > sizeof(buf))
return;
+
+ if (!memcmp(client_ethaddr, zero_ethaddr, ETH_ALEN)) {
+ uint8_t arp_req[ETH_HLEN + sizeof(struct arphdr)];
+ struct ethhdr *reh = (struct ethhdr *)arp_req;
+ struct arphdr *rah = (struct arphdr *)(arp_req + ETH_HLEN);
+ const struct ip *iph = (const struct ip *)ip_data;
+
+ /* If the client addr is not known, there is no point in
+ sending the packet to it. Normally the sender should have
+ done an ARP request to get its MAC address. Here we do it
+ in place of sending the packet and we hope that the sender
+ will retry sending its packet. */
+ memset(reh->h_dest, 0xff, ETH_ALEN);
+ memcpy(reh->h_source, special_ethaddr, ETH_ALEN - 1);
+ reh->h_source[5] = CTL_ALIAS;
+ reh->h_proto = htons(ETH_P_ARP);
+ rah->ar_hrd = htons(1);
+ rah->ar_pro = htons(ETH_P_IP);
+ rah->ar_hln = ETH_ALEN;
+ rah->ar_pln = 4;
+ rah->ar_op = htons(ARPOP_REQUEST);
+ /* source hw addr */
+ memcpy(rah->ar_sha, special_ethaddr, ETH_ALEN - 1);
+ rah->ar_sha[5] = CTL_ALIAS;
+ /* source IP */
+ memcpy(rah->ar_sip, &alias_addr, 4);
+ /* target hw addr (none) */
+ memset(rah->ar_tha, 0, ETH_ALEN);
+ /* target IP */
+ memcpy(rah->ar_tip, &iph->ip_dst, 4);
+ client_ipaddr = iph->ip_dst;
+ slirp_output(arp_req, sizeof(arp_req));
+ } else {
+ memcpy(eh->h_dest, client_ethaddr, ETH_ALEN);
+ memcpy(eh->h_source, special_ethaddr, ETH_ALEN - 1);
+ /* XXX: not correct */
+ eh->h_source[5] = CTL_ALIAS;
+ eh->h_proto = htons(ETH_P_IP);
+ memcpy(buf + sizeof(struct ethhdr), ip_data, ip_data_len);
+ slirp_output(buf, ip_data_len + ETH_HLEN);
+ }
+}
+
+static void _slirp_redir_loop(void (*func)(void *opaque, int is_udp,
+ struct in_addr *laddr, u_int lport,
+ struct in_addr *faddr, u_int fport),
+ void *opaque, int is_udp)
+{
+ struct socket *head = (is_udp ? &udb : &tcb);
+ struct socket *so;
- memcpy(eh->h_dest, client_ethaddr, ETH_ALEN);
- memcpy(eh->h_source, special_ethaddr, ETH_ALEN - 1);
- eh->h_source[5] = CTL_ALIAS;
- eh->h_proto = htons(ETH_P_IP);
- memcpy(buf + sizeof(struct ethhdr), ip_data, ip_data_len);
- slirp_output(buf, ip_data_len + ETH_HLEN);
+ for (so = head->so_next; so != head; so = so->so_next) {
+ func(opaque, is_udp,
+ &so->so_laddr, ntohs(so->so_lport),
+ &so->so_faddr, ntohs(so->so_fport));
+ }
+}
+
+void slirp_redir_loop(void (*func)(void *opaque, int is_udp,
+ struct in_addr *laddr, u_int lport,
+ struct in_addr *faddr, u_int fport),
+ void *opaque)
+{
+ _slirp_redir_loop(func, opaque, 0);
+ _slirp_redir_loop(func, opaque, 1);
+}
+
+/* Unlistens a redirection
+ *
+ * Return value: number of redirs removed */
+int slirp_redir_rm(int is_udp, int host_port)
+{
+ struct socket *so;
+ struct socket *head = (is_udp ? &udb : &tcb);
+ int fport = htons(host_port);
+ int n = 0;
+
+ loop_again:
+ for (so = head->so_next; so != head; so = so->so_next) {
+ if (so->so_fport == fport) {
+ close(so->s);
+ sofree(so);
+ n++;
+ goto loop_again;
+ }
+ }
+
+ return n;
+}
+
+int slirp_redir(int is_udp, int host_port,
+ struct in_addr guest_addr, int guest_port)
+{
+ if (is_udp) {
+ if (!udp_listen(htons(host_port), guest_addr.s_addr,
+ htons(guest_port), 0))
+ return -1;
+ } else {
+ if (!solisten(htons(host_port), guest_addr.s_addr,
+ htons(guest_port), 0))
+ return -1;
+ }
+ return 0;
+}
+
+int slirp_add_exec(int do_pty, const void *args, int addr_low_byte,
+ int guest_port)
+{
+ return add_exec(&exec_list, do_pty, (char *)args,
+ addr_low_byte, htons(guest_port));
+}
+
+ssize_t slirp_send(struct socket *so, const void *buf, size_t len, int flags)
+{
+ if (so->s == -1 && so->extra) {
+ qemu_chr_write(so->extra, buf, len);
+ return len;
+ }
+
+ return send(so->s, buf, len, flags);
+}
+
+static struct socket *slirp_find_ctl_socket(int addr_low_byte, int guest_port)
+{
+ struct socket *so;
+
+ for (so = tcb.so_next; so != &tcb; so = so->so_next) {
+ if ((so->so_faddr.s_addr & htonl(0xffffff00)) ==
+ special_addr.s_addr
+ && (ntohl(so->so_faddr.s_addr) & 0xff) ==
+ addr_low_byte
+ && htons(so->so_fport) == guest_port)
+ return so;
+ }
+
+ return NULL;
+}
+
+size_t slirp_socket_can_recv(int addr_low_byte, int guest_port)
+{
+ struct iovec iov[2];
+ struct socket *so;
+
+ if (!link_up)
+ return 0;
+
+ so = slirp_find_ctl_socket(addr_low_byte, guest_port);
+
+ if (!so || so->so_state & SS_NOFDREF)
+ return 0;
+
+ if (!CONN_CANFRCV(so) || so->so_snd.sb_cc >= (so->so_snd.sb_datalen/2))
+ return 0;
+
+ return sopreprbuf(so, iov, NULL);
+}
+
+void slirp_socket_recv(int addr_low_byte, int guest_port, const uint8_t *buf,
+ int size)
+{
+ int ret;
+ struct socket *so = slirp_find_ctl_socket(addr_low_byte, guest_port);
+
+ if (!so)
+ return;
+
+ ret = soreadbuf(so, (const char *)buf, size);
+
+ if (ret > 0)
+ tcp_output(sototcpcb(so));
+}
+
+static void slirp_tcp_save(QEMUFile *f, struct tcpcb *tp)
+{
+ int i;
+
+ qemu_put_sbe16(f, tp->t_state);
+ for (i = 0; i < TCPT_NTIMERS; i++)
+ qemu_put_sbe16(f, tp->t_timer[i]);
+ qemu_put_sbe16(f, tp->t_rxtshift);
+ qemu_put_sbe16(f, tp->t_rxtcur);
+ qemu_put_sbe16(f, tp->t_dupacks);
+ qemu_put_be16(f, tp->t_maxseg);
+ qemu_put_sbyte(f, tp->t_force);
+ qemu_put_be16(f, tp->t_flags);
+ qemu_put_be32(f, tp->snd_una);
+ qemu_put_be32(f, tp->snd_nxt);
+ qemu_put_be32(f, tp->snd_up);
+ qemu_put_be32(f, tp->snd_wl1);
+ qemu_put_be32(f, tp->snd_wl2);
+ qemu_put_be32(f, tp->iss);
+ qemu_put_be32(f, tp->snd_wnd);
+ qemu_put_be32(f, tp->rcv_wnd);
+ qemu_put_be32(f, tp->rcv_nxt);
+ qemu_put_be32(f, tp->rcv_up);
+ qemu_put_be32(f, tp->irs);
+ qemu_put_be32(f, tp->rcv_adv);
+ qemu_put_be32(f, tp->snd_max);
+ qemu_put_be32(f, tp->snd_cwnd);
+ qemu_put_be32(f, tp->snd_ssthresh);
+ qemu_put_sbe16(f, tp->t_idle);
+ qemu_put_sbe16(f, tp->t_rtt);
+ qemu_put_be32(f, tp->t_rtseq);
+ qemu_put_sbe16(f, tp->t_srtt);
+ qemu_put_sbe16(f, tp->t_rttvar);
+ qemu_put_be16(f, tp->t_rttmin);
+ qemu_put_be32(f, tp->max_sndwnd);
+ qemu_put_byte(f, tp->t_oobflags);
+ qemu_put_byte(f, tp->t_iobc);
+ qemu_put_sbe16(f, tp->t_softerror);
+ qemu_put_byte(f, tp->snd_scale);
+ qemu_put_byte(f, tp->rcv_scale);
+ qemu_put_byte(f, tp->request_r_scale);
+ qemu_put_byte(f, tp->requested_s_scale);
+ qemu_put_be32(f, tp->ts_recent);
+ qemu_put_be32(f, tp->ts_recent_age);
+ qemu_put_be32(f, tp->last_ack_sent);
+}
+
+static void slirp_sbuf_save(QEMUFile *f, struct sbuf *sbuf)
+{
+ uint32_t off;
+
+ qemu_put_be32(f, sbuf->sb_cc);
+ qemu_put_be32(f, sbuf->sb_datalen);
+ off = (uint32_t)(sbuf->sb_wptr - sbuf->sb_data);
+ qemu_put_sbe32(f, off);
+ off = (uint32_t)(sbuf->sb_rptr - sbuf->sb_data);
+ qemu_put_sbe32(f, off);
+ qemu_put_buffer(f, (unsigned char*)sbuf->sb_data, sbuf->sb_datalen);
+}
+
+static void slirp_socket_save(QEMUFile *f, struct socket *so)
+{
+ qemu_put_be32(f, so->so_urgc);
+ qemu_put_be32(f, so->so_faddr.s_addr);
+ qemu_put_be32(f, so->so_laddr.s_addr);
+ qemu_put_be16(f, so->so_fport);
+ qemu_put_be16(f, so->so_lport);
+ qemu_put_byte(f, so->so_iptos);
+ qemu_put_byte(f, so->so_emu);
+ qemu_put_byte(f, so->so_type);
+ qemu_put_be32(f, so->so_state);
+ slirp_sbuf_save(f, &so->so_rcv);
+ slirp_sbuf_save(f, &so->so_snd);
+ slirp_tcp_save(f, so->so_tcpcb);
+}
+
+static void slirp_state_save(QEMUFile *f, void *opaque)
+{
+ struct ex_list *ex_ptr;
+
+ for (ex_ptr = exec_list; ex_ptr; ex_ptr = ex_ptr->ex_next)
+ if (ex_ptr->ex_pty == 3) {
+ struct socket *so;
+ so = slirp_find_ctl_socket(ex_ptr->ex_addr, ntohs(ex_ptr->ex_fport));
+ if (!so)
+ continue;
+
+ qemu_put_byte(f, 42);
+ slirp_socket_save(f, so);
+ }
+ qemu_put_byte(f, 0);
+}
+
+static void slirp_tcp_load(QEMUFile *f, struct tcpcb *tp)
+{
+ int i;
+
+ tp->t_state = qemu_get_sbe16(f);
+ for (i = 0; i < TCPT_NTIMERS; i++)
+ tp->t_timer[i] = qemu_get_sbe16(f);
+ tp->t_rxtshift = qemu_get_sbe16(f);
+ tp->t_rxtcur = qemu_get_sbe16(f);
+ tp->t_dupacks = qemu_get_sbe16(f);
+ tp->t_maxseg = qemu_get_be16(f);
+ tp->t_force = qemu_get_sbyte(f);
+ tp->t_flags = qemu_get_be16(f);
+ tp->snd_una = qemu_get_be32(f);
+ tp->snd_nxt = qemu_get_be32(f);
+ tp->snd_up = qemu_get_be32(f);
+ tp->snd_wl1 = qemu_get_be32(f);
+ tp->snd_wl2 = qemu_get_be32(f);
+ tp->iss = qemu_get_be32(f);
+ tp->snd_wnd = qemu_get_be32(f);
+ tp->rcv_wnd = qemu_get_be32(f);
+ tp->rcv_nxt = qemu_get_be32(f);
+ tp->rcv_up = qemu_get_be32(f);
+ tp->irs = qemu_get_be32(f);
+ tp->rcv_adv = qemu_get_be32(f);
+ tp->snd_max = qemu_get_be32(f);
+ tp->snd_cwnd = qemu_get_be32(f);
+ tp->snd_ssthresh = qemu_get_be32(f);
+ tp->t_idle = qemu_get_sbe16(f);
+ tp->t_rtt = qemu_get_sbe16(f);
+ tp->t_rtseq = qemu_get_be32(f);
+ tp->t_srtt = qemu_get_sbe16(f);
+ tp->t_rttvar = qemu_get_sbe16(f);
+ tp->t_rttmin = qemu_get_be16(f);
+ tp->max_sndwnd = qemu_get_be32(f);
+ tp->t_oobflags = qemu_get_byte(f);
+ tp->t_iobc = qemu_get_byte(f);
+ tp->t_softerror = qemu_get_sbe16(f);
+ tp->snd_scale = qemu_get_byte(f);
+ tp->rcv_scale = qemu_get_byte(f);
+ tp->request_r_scale = qemu_get_byte(f);
+ tp->requested_s_scale = qemu_get_byte(f);
+ tp->ts_recent = qemu_get_be32(f);
+ tp->ts_recent_age = qemu_get_be32(f);
+ tp->last_ack_sent = qemu_get_be32(f);
+ tcp_template(tp);
+}
+
+static int slirp_sbuf_load(QEMUFile *f, struct sbuf *sbuf)
+{
+ uint32_t off, sb_cc, sb_datalen;
+
+ sb_cc = qemu_get_be32(f);
+ sb_datalen = qemu_get_be32(f);
+
+ sbreserve(sbuf, sb_datalen);
+
+ if (sbuf->sb_datalen != sb_datalen)
+ return -ENOMEM;
+
+ sbuf->sb_cc = sb_cc;
+
+ off = qemu_get_sbe32(f);
+ sbuf->sb_wptr = sbuf->sb_data + off;
+ off = qemu_get_sbe32(f);
+ sbuf->sb_rptr = sbuf->sb_data + off;
+ qemu_get_buffer(f, (unsigned char*)sbuf->sb_data, sbuf->sb_datalen);
+
+ return 0;
+}
+
+static int slirp_socket_load(QEMUFile *f, struct socket *so)
+{
+ if (tcp_attach(so) < 0)
+ return -ENOMEM;
+
+ so->so_urgc = qemu_get_be32(f);
+ so->so_faddr.s_addr = qemu_get_be32(f);
+ so->so_laddr.s_addr = qemu_get_be32(f);
+ so->so_fport = qemu_get_be16(f);
+ so->so_lport = qemu_get_be16(f);
+ so->so_iptos = qemu_get_byte(f);
+ so->so_emu = qemu_get_byte(f);
+ so->so_type = qemu_get_byte(f);
+ so->so_state = qemu_get_be32(f);
+ if (slirp_sbuf_load(f, &so->so_rcv) < 0)
+ return -ENOMEM;
+ if (slirp_sbuf_load(f, &so->so_snd) < 0)
+ return -ENOMEM;
+ slirp_tcp_load(f, so->so_tcpcb);
+
+ return 0;
+}
+
+static int slirp_state_load(QEMUFile *f, void *opaque, int version_id)
+{
+ struct ex_list *ex_ptr;
+ int r;
+
+ while ((r = qemu_get_byte(f))) {
+ int ret;
+ struct socket *so = socreate();
+
+ if (!so)
+ return -ENOMEM;
+
+ ret = slirp_socket_load(f, so);
+
+ if (ret < 0)
+ return ret;
+
+ if ((so->so_faddr.s_addr & htonl(0xffffff00)) != special_addr.s_addr)
+ return -EINVAL;
+
+ for (ex_ptr = exec_list; ex_ptr; ex_ptr = ex_ptr->ex_next)
+ if (ex_ptr->ex_pty == 3 &&
+ (ntohl(so->so_faddr.s_addr) & 0xff) == ex_ptr->ex_addr &&
+ so->so_fport == ex_ptr->ex_fport)
+ break;
+
+ if (!ex_ptr)
+ return -EINVAL;
+
+ so->extra = (void *)ex_ptr->ex_exec;
+ }
+
+ return 0;
}
projects / qemu.git / blobdiff