mirror of
https://gitlab.com/qemu-project/qemu
synced 2024-11-05 20:35:44 +00:00
slirp: VMStatify socket level
Working up the stack, this replaces the slirp_socket_load/save with VMState definitions. A place holder for IPv6 support is added as a comment; it needs testing once the rest of the IPv6 code is there. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
This commit is contained in:
Dr. David Alan Gilbert
Samuel Thibault
parent
7eddf37c63
commit
14650df402
2 changed files with 150 additions and 85 deletions
229
slirp/slirp.c
229
slirp/slirp.c
|
|
@ -1254,40 +1254,154 @@ static const VMStateDescription vmstate_slirp_sbuf = {
|
|||
}
|
||||
};
|
||||
|
||||
|
||||
static void slirp_socket_save(QEMUFile *f, struct socket *so)
|
||||
static bool slirp_older_than_v4(void *opaque, int version_id)
|
||||
{
|
||||
qemu_put_be32(f, so->so_urgc);
|
||||
qemu_put_be16(f, so->so_ffamily);
|
||||
switch (so->so_ffamily) {
|
||||
case AF_INET:
|
||||
qemu_put_be32(f, so->so_faddr.s_addr);
|
||||
qemu_put_be16(f, so->so_fport);
|
||||
break;
|
||||
default:
|
||||
error_report("so_ffamily unknown, unable to save so_faddr and"
|
||||
" so_fport");
|
||||
}
|
||||
qemu_put_be16(f, so->so_lfamily);
|
||||
switch (so->so_lfamily) {
|
||||
case AF_INET:
|
||||
qemu_put_be32(f, so->so_laddr.s_addr);
|
||||
qemu_put_be16(f, so->so_lport);
|
||||
break;
|
||||
default:
|
||||
error_report("so_ffamily unknown, unable to save so_laddr and"
|
||||
" 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);
|
||||
/* TODO: Build vmstate at this level */
|
||||
vmstate_save_state(f, &vmstate_slirp_sbuf, &so->so_rcv, 0);
|
||||
vmstate_save_state(f, &vmstate_slirp_sbuf, &so->so_snd, 0);
|
||||
vmstate_save_state(f, &vmstate_slirp_tcp, so->so_tcpcb, 0);
|
||||
return version_id < 4;
|
||||
}
|
||||
|
||||
static bool slirp_family_inet(void *opaque, int version_id)
|
||||
{
|
||||
union slirp_sockaddr *ssa = (union slirp_sockaddr *)opaque;
|
||||
return ssa->ss.ss_family == AF_INET;
|
||||
}
|
||||
|
||||
static int slirp_socket_pre_load(void *opaque)
|
||||
{
|
||||
struct socket *so = opaque;
|
||||
if (tcp_attach(so) < 0) {
|
||||
return -ENOMEM;
|
||||
}
|
||||
/* Older versions don't load these fields */
|
||||
so->so_ffamily = AF_INET;
|
||||
so->so_lfamily = AF_INET;
|
||||
return 0;
|
||||
}
|
||||
|
||||
#ifndef _WIN32
|
||||
#define VMSTATE_SIN4_ADDR(f, s, t) VMSTATE_UINT32_TEST(f, s, t)
|
||||
#else
|
||||
/* Win uses u_long rather than uint32_t - but it's still 32bits long */
|
||||
#define VMSTATE_SIN4_ADDR(f, s, t) VMSTATE_SINGLE_TEST(f, s, t, 0, \
|
||||
vmstate_info_uint32, u_long)
|
||||
#endif
|
||||
|
||||
/* The OS provided ss_family field isn't that portable; it's size
|
||||
* and type varies (16/8 bit, signed, unsigned)
|
||||
* and the values it contains aren't fully portable.
|
||||
*/
|
||||
typedef struct SS_FamilyTmpStruct {
|
||||
union slirp_sockaddr *parent;
|
||||
uint16_t portable_family;
|
||||
} SS_FamilyTmpStruct;
|
||||
|
||||
#define SS_FAMILY_MIG_IPV4 2 /* Linux, BSD, Win... */
|
||||
#define SS_FAMILY_MIG_IPV6 10 /* Linux */
|
||||
#define SS_FAMILY_MIG_OTHER 0xffff
|
||||
|
||||
static void ss_family_pre_save(void *opaque)
|
||||
{
|
||||
SS_FamilyTmpStruct *tss = opaque;
|
||||
|
||||
tss->portable_family = SS_FAMILY_MIG_OTHER;
|
||||
|
||||
if (tss->parent->ss.ss_family == AF_INET) {
|
||||
tss->portable_family = SS_FAMILY_MIG_IPV4;
|
||||
} else if (tss->parent->ss.ss_family == AF_INET6) {
|
||||
tss->portable_family = SS_FAMILY_MIG_IPV6;
|
||||
}
|
||||
}
|
||||
|
||||
static int ss_family_post_load(void *opaque, int version_id)
|
||||
{
|
||||
SS_FamilyTmpStruct *tss = opaque;
|
||||
|
||||
switch (tss->portable_family) {
|
||||
case SS_FAMILY_MIG_IPV4:
|
||||
tss->parent->ss.ss_family = AF_INET;
|
||||
break;
|
||||
case SS_FAMILY_MIG_IPV6:
|
||||
case 23: /* compatibility: AF_INET6 from mingw */
|
||||
case 28: /* compatibility: AF_INET6 from FreeBSD sys/socket.h */
|
||||
tss->parent->ss.ss_family = AF_INET6;
|
||||
break;
|
||||
default:
|
||||
error_report("invalid ss_family type %x", tss->portable_family);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const VMStateDescription vmstate_slirp_ss_family = {
|
||||
.name = "slirp-socket-addr/ss_family",
|
||||
.pre_save = ss_family_pre_save,
|
||||
.post_load = ss_family_post_load,
|
||||
.fields = (VMStateField[]) {
|
||||
VMSTATE_UINT16(portable_family, SS_FamilyTmpStruct),
|
||||
VMSTATE_END_OF_LIST()
|
||||
}
|
||||
};
|
||||
|
||||
static const VMStateDescription vmstate_slirp_socket_addr = {
|
||||
.name = "slirp-socket-addr",
|
||||
.version_id = 4,
|
||||
.fields = (VMStateField[]) {
|
||||
VMSTATE_WITH_TMP(union slirp_sockaddr, SS_FamilyTmpStruct,
|
||||
vmstate_slirp_ss_family),
|
||||
VMSTATE_SIN4_ADDR(sin.sin_addr.s_addr, union slirp_sockaddr,
|
||||
slirp_family_inet),
|
||||
VMSTATE_UINT16_TEST(sin.sin_port, union slirp_sockaddr,
|
||||
slirp_family_inet),
|
||||
|
||||
#if 0
|
||||
/* Untested: Needs checking by someone with IPv6 test */
|
||||
VMSTATE_BUFFER_TEST(sin6.sin6_addr, union slirp_sockaddr,
|
||||
slirp_family_inet6),
|
||||
VMSTATE_UINT16_TEST(sin6.sin6_port, union slirp_sockaddr,
|
||||
slirp_family_inet6),
|
||||
VMSTATE_UINT32_TEST(sin6.sin6_flowinfo, union slirp_sockaddr,
|
||||
slirp_family_inet6),
|
||||
VMSTATE_UINT32_TEST(sin6.sin6_scope_id, union slirp_sockaddr,
|
||||
slirp_family_inet6),
|
||||
#endif
|
||||
|
||||
VMSTATE_END_OF_LIST()
|
||||
}
|
||||
};
|
||||
|
||||
static const VMStateDescription vmstate_slirp_socket = {
|
||||
.name = "slirp-socket",
|
||||
.version_id = 4,
|
||||
.pre_load = slirp_socket_pre_load,
|
||||
.fields = (VMStateField[]) {
|
||||
VMSTATE_UINT32(so_urgc, struct socket),
|
||||
/* Pre-v4 versions */
|
||||
VMSTATE_SIN4_ADDR(so_faddr.s_addr, struct socket,
|
||||
slirp_older_than_v4),
|
||||
VMSTATE_SIN4_ADDR(so_laddr.s_addr, struct socket,
|
||||
slirp_older_than_v4),
|
||||
VMSTATE_UINT16_TEST(so_fport, struct socket, slirp_older_than_v4),
|
||||
VMSTATE_UINT16_TEST(so_lport, struct socket, slirp_older_than_v4),
|
||||
/* v4 and newer */
|
||||
VMSTATE_STRUCT(fhost, struct socket, 4, vmstate_slirp_socket_addr,
|
||||
union slirp_sockaddr),
|
||||
VMSTATE_STRUCT(lhost, struct socket, 4, vmstate_slirp_socket_addr,
|
||||
union slirp_sockaddr),
|
||||
|
||||
VMSTATE_UINT8(so_iptos, struct socket),
|
||||
VMSTATE_UINT8(so_emu, struct socket),
|
||||
VMSTATE_UINT8(so_type, struct socket),
|
||||
VMSTATE_INT32(so_state, struct socket),
|
||||
VMSTATE_STRUCT(so_rcv, struct socket, 0, vmstate_slirp_sbuf,
|
||||
struct sbuf),
|
||||
VMSTATE_STRUCT(so_snd, struct socket, 0, vmstate_slirp_sbuf,
|
||||
struct sbuf),
|
||||
VMSTATE_STRUCT_POINTER(so_tcpcb, struct socket, vmstate_slirp_tcp,
|
||||
struct tcpcb),
|
||||
VMSTATE_END_OF_LIST()
|
||||
}
|
||||
};
|
||||
|
||||
static void slirp_bootp_save(QEMUFile *f, Slirp *slirp)
|
||||
{
|
||||
int i;
|
||||
|
|
@ -1312,7 +1426,7 @@ static void slirp_state_save(QEMUFile *f, void *opaque)
|
|||
continue;
|
||||
|
||||
qemu_put_byte(f, 42);
|
||||
slirp_socket_save(f, so);
|
||||
vmstate_save_state(f, &vmstate_slirp_socket, so, NULL);
|
||||
}
|
||||
qemu_put_byte(f, 0);
|
||||
|
||||
|
|
@ -1321,55 +1435,6 @@ static void slirp_state_save(QEMUFile *f, void *opaque)
|
|||
slirp_bootp_save(f, slirp);
|
||||
}
|
||||
|
||||
static int slirp_socket_load(QEMUFile *f, struct socket *so, int version_id)
|
||||
{
|
||||
int ret = 0;
|
||||
if (tcp_attach(so) < 0)
|
||||
return -ENOMEM;
|
||||
|
||||
so->so_urgc = qemu_get_be32(f);
|
||||
if (version_id <= 3) {
|
||||
so->so_ffamily = AF_INET;
|
||||
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);
|
||||
} else {
|
||||
so->so_ffamily = qemu_get_be16(f);
|
||||
switch (so->so_ffamily) {
|
||||
case AF_INET:
|
||||
so->so_faddr.s_addr = qemu_get_be32(f);
|
||||
so->so_fport = qemu_get_be16(f);
|
||||
break;
|
||||
default:
|
||||
error_report(
|
||||
"so_ffamily unknown, unable to restore so_faddr and so_lport");
|
||||
}
|
||||
so->so_lfamily = qemu_get_be16(f);
|
||||
switch (so->so_lfamily) {
|
||||
case AF_INET:
|
||||
so->so_laddr.s_addr = qemu_get_be32(f);
|
||||
so->so_lport = qemu_get_be16(f);
|
||||
break;
|
||||
default:
|
||||
error_report(
|
||||
"so_ffamily unknown, unable to restore so_laddr and so_lport");
|
||||
}
|
||||
}
|
||||
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);
|
||||
/* TODO: VMState at this level */
|
||||
ret = vmstate_load_state(f, &vmstate_slirp_sbuf, &so->so_rcv, 0);
|
||||
if (!ret) {
|
||||
ret = vmstate_load_state(f, &vmstate_slirp_sbuf, &so->so_snd, 0);
|
||||
}
|
||||
if (!ret) {
|
||||
ret = vmstate_load_state(f, &vmstate_slirp_tcp, so->so_tcpcb, 0);
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void slirp_bootp_load(QEMUFile *f, Slirp *slirp)
|
||||
{
|
||||
|
|
@ -1393,7 +1458,7 @@ static int slirp_state_load(QEMUFile *f, void *opaque, int version_id)
|
|||
if (!so)
|
||||
return -ENOMEM;
|
||||
|
||||
ret = slirp_socket_load(f, so, version_id);
|
||||
ret = vmstate_load_state(f, &vmstate_slirp_socket, so, version_id);
|
||||
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
|
|
|||
|
|
@ -36,7 +36,7 @@ struct socket {
|
|||
* PING reply's */
|
||||
struct tcpiphdr *so_ti; /* Pointer to the original ti within
|
||||
* so_mconn, for non-blocking connections */
|
||||
int so_urgc;
|
||||
uint32_t so_urgc;
|
||||
union slirp_sockaddr fhost; /* Foreign host */
|
||||
#define so_faddr fhost.sin.sin_addr
|
||||
#define so_fport fhost.sin.sin_port
|
||||
|
|
@ -54,8 +54,8 @@ struct socket {
|
|||
uint8_t so_iptos; /* Type of service */
|
||||
uint8_t so_emu; /* Is the socket emulated? */
|
||||
|
||||
u_char so_type; /* Type of socket, UDP or TCP */
|
||||
int so_state; /* internal state flags SS_*, below */
|
||||
uint8_t so_type; /* Type of socket, UDP or TCP */
|
||||
int32_t so_state; /* internal state flags SS_*, below */
|
||||
|
||||
struct tcpcb *so_tcpcb; /* pointer to TCP protocol control block */
|
||||
u_int so_expire; /* When the socket will expire */
|
||||
|
|
|
|||
Loading…
Reference in a new issue