slirp: move QEMU state saving to a separate unit
Make state saving optional: this will allow to build SLIRP without QEMU. (eventually, the vmstate helpers will be extracted, so an external project & process could save its state) Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
This commit is contained in:
parent
c21d959440
commit
268c95d771
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@ -20,6 +20,7 @@ slirp.mo-objs = \
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sbuf.o \
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sbuf.o \
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slirp.o \
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slirp.o \
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socket.o \
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socket.o \
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state.o \
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tcp_input.o \
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tcp_input.o \
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tcp_output.o \
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tcp_output.o \
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tcp_subr.o \
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tcp_subr.o \
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372
slirp/slirp.c
372
slirp/slirp.c
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@ -30,6 +30,10 @@
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#include "hw/hw.h"
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#include "hw/hw.h"
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#include "qemu/cutils.h"
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#include "qemu/cutils.h"
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#ifdef WITH_QEMU
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#include "state.h"
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#endif
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#ifndef _WIN32
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#ifndef _WIN32
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#include <net/if.h>
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#include <net/if.h>
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#endif
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#endif
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@ -278,14 +282,6 @@ static void slirp_init_once(void)
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}
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}
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static void slirp_state_save(QEMUFile *f, void *opaque);
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static int slirp_state_load(QEMUFile *f, void *opaque, int version_id);
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static SaveVMHandlers savevm_slirp_state = {
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.save_state = slirp_state_save,
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.load_state = slirp_state_load,
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};
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Slirp *slirp_init(int restricted, bool in_enabled, struct in_addr vnetwork,
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Slirp *slirp_init(int restricted, bool in_enabled, struct in_addr vnetwork,
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struct in_addr vnetmask, struct in_addr vhost,
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struct in_addr vnetmask, struct in_addr vhost,
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bool in6_enabled,
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bool in6_enabled,
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@ -341,8 +337,9 @@ Slirp *slirp_init(int restricted, bool in_enabled, struct in_addr vnetwork,
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slirp->opaque = opaque;
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slirp->opaque = opaque;
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register_savevm_live(NULL, "slirp", 0, 4, &savevm_slirp_state, slirp);
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#ifdef WITH_QEMU
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slirp_state_register(slirp);
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#endif
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QTAILQ_INSERT_TAIL(&slirp_instances, slirp, entry);
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QTAILQ_INSERT_TAIL(&slirp_instances, slirp, entry);
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return slirp;
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return slirp;
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@ -359,9 +356,9 @@ void slirp_cleanup(Slirp *slirp)
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}
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}
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QTAILQ_REMOVE(&slirp_instances, slirp, entry);
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QTAILQ_REMOVE(&slirp_instances, slirp, entry);
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#ifdef WITH_QEMU
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unregister_savevm(NULL, "slirp", slirp);
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slirp_state_unregister(slirp);
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#endif
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ip_cleanup(slirp);
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ip_cleanup(slirp);
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ip6_cleanup(slirp);
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ip6_cleanup(slirp);
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m_cleanup(slirp);
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m_cleanup(slirp);
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@ -1115,7 +1112,7 @@ ssize_t slirp_send(struct socket *so, const void *buf, size_t len, int flags)
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return send(so->s, buf, len, flags);
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return send(so->s, buf, len, flags);
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}
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}
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static struct socket *
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struct socket *
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slirp_find_ctl_socket(Slirp *slirp, struct in_addr guest_addr, int guest_port)
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slirp_find_ctl_socket(Slirp *slirp, struct in_addr guest_addr, int guest_port)
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{
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{
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struct socket *so;
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struct socket *so;
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@ -1162,350 +1159,3 @@ void slirp_socket_recv(Slirp *slirp, struct in_addr guest_addr, int guest_port,
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if (ret > 0)
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if (ret > 0)
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tcp_output(sototcpcb(so));
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tcp_output(sototcpcb(so));
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}
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}
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static int slirp_tcp_post_load(void *opaque, int version)
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{
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tcp_template((struct tcpcb *)opaque);
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return 0;
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}
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static const VMStateDescription vmstate_slirp_tcp = {
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.name = "slirp-tcp",
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.version_id = 0,
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.post_load = slirp_tcp_post_load,
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.fields = (VMStateField[]) {
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VMSTATE_INT16(t_state, struct tcpcb),
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VMSTATE_INT16_ARRAY(t_timer, struct tcpcb, TCPT_NTIMERS),
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VMSTATE_INT16(t_rxtshift, struct tcpcb),
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VMSTATE_INT16(t_rxtcur, struct tcpcb),
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VMSTATE_INT16(t_dupacks, struct tcpcb),
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VMSTATE_UINT16(t_maxseg, struct tcpcb),
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VMSTATE_UINT8(t_force, struct tcpcb),
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VMSTATE_UINT16(t_flags, struct tcpcb),
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VMSTATE_UINT32(snd_una, struct tcpcb),
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VMSTATE_UINT32(snd_nxt, struct tcpcb),
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VMSTATE_UINT32(snd_up, struct tcpcb),
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VMSTATE_UINT32(snd_wl1, struct tcpcb),
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VMSTATE_UINT32(snd_wl2, struct tcpcb),
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VMSTATE_UINT32(iss, struct tcpcb),
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VMSTATE_UINT32(snd_wnd, struct tcpcb),
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VMSTATE_UINT32(rcv_wnd, struct tcpcb),
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VMSTATE_UINT32(rcv_nxt, struct tcpcb),
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VMSTATE_UINT32(rcv_up, struct tcpcb),
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VMSTATE_UINT32(irs, struct tcpcb),
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VMSTATE_UINT32(rcv_adv, struct tcpcb),
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VMSTATE_UINT32(snd_max, struct tcpcb),
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VMSTATE_UINT32(snd_cwnd, struct tcpcb),
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VMSTATE_UINT32(snd_ssthresh, struct tcpcb),
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VMSTATE_INT16(t_idle, struct tcpcb),
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VMSTATE_INT16(t_rtt, struct tcpcb),
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VMSTATE_UINT32(t_rtseq, struct tcpcb),
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VMSTATE_INT16(t_srtt, struct tcpcb),
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VMSTATE_INT16(t_rttvar, struct tcpcb),
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VMSTATE_UINT16(t_rttmin, struct tcpcb),
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VMSTATE_UINT32(max_sndwnd, struct tcpcb),
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VMSTATE_UINT8(t_oobflags, struct tcpcb),
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VMSTATE_UINT8(t_iobc, struct tcpcb),
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VMSTATE_INT16(t_softerror, struct tcpcb),
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VMSTATE_UINT8(snd_scale, struct tcpcb),
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VMSTATE_UINT8(rcv_scale, struct tcpcb),
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VMSTATE_UINT8(request_r_scale, struct tcpcb),
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VMSTATE_UINT8(requested_s_scale, struct tcpcb),
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VMSTATE_UINT32(ts_recent, struct tcpcb),
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VMSTATE_UINT32(ts_recent_age, struct tcpcb),
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VMSTATE_UINT32(last_ack_sent, struct tcpcb),
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VMSTATE_END_OF_LIST()
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}
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};
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/* The sbuf has a pair of pointers that are migrated as offsets;
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* we calculate the offsets and restore the pointers using
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* pre_save/post_load on a tmp structure.
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*/
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struct sbuf_tmp {
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struct sbuf *parent;
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uint32_t roff, woff;
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};
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static int sbuf_tmp_pre_save(void *opaque)
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{
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struct sbuf_tmp *tmp = opaque;
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tmp->woff = tmp->parent->sb_wptr - tmp->parent->sb_data;
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tmp->roff = tmp->parent->sb_rptr - tmp->parent->sb_data;
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return 0;
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}
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static int sbuf_tmp_post_load(void *opaque, int version)
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{
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struct sbuf_tmp *tmp = opaque;
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uint32_t requested_len = tmp->parent->sb_datalen;
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/* Allocate the buffer space used by the field after the tmp */
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sbreserve(tmp->parent, tmp->parent->sb_datalen);
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if (tmp->parent->sb_datalen != requested_len) {
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return -ENOMEM;
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}
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if (tmp->woff >= requested_len ||
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tmp->roff >= requested_len) {
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g_critical("invalid sbuf offsets r/w=%u/%u len=%u",
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tmp->roff, tmp->woff, requested_len);
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return -EINVAL;
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}
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tmp->parent->sb_wptr = tmp->parent->sb_data + tmp->woff;
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tmp->parent->sb_rptr = tmp->parent->sb_data + tmp->roff;
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return 0;
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}
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static const VMStateDescription vmstate_slirp_sbuf_tmp = {
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.name = "slirp-sbuf-tmp",
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.post_load = sbuf_tmp_post_load,
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.pre_save = sbuf_tmp_pre_save,
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.version_id = 0,
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.fields = (VMStateField[]) {
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VMSTATE_UINT32(woff, struct sbuf_tmp),
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VMSTATE_UINT32(roff, struct sbuf_tmp),
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VMSTATE_END_OF_LIST()
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}
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};
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static const VMStateDescription vmstate_slirp_sbuf = {
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.name = "slirp-sbuf",
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.version_id = 0,
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.fields = (VMStateField[]) {
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VMSTATE_UINT32(sb_cc, struct sbuf),
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VMSTATE_UINT32(sb_datalen, struct sbuf),
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VMSTATE_WITH_TMP(struct sbuf, struct sbuf_tmp, vmstate_slirp_sbuf_tmp),
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VMSTATE_VBUFFER_UINT32(sb_data, struct sbuf, 0, NULL, sb_datalen),
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VMSTATE_END_OF_LIST()
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}
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};
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static bool slirp_older_than_v4(void *opaque, int version_id)
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{
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return version_id < 4;
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}
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static bool slirp_family_inet(void *opaque, int version_id)
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{
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union slirp_sockaddr *ssa = (union slirp_sockaddr *)opaque;
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return ssa->ss.ss_family == AF_INET;
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}
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static int slirp_socket_pre_load(void *opaque)
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{
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struct socket *so = opaque;
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if (tcp_attach(so) < 0) {
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return -ENOMEM;
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}
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/* Older versions don't load these fields */
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so->so_ffamily = AF_INET;
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so->so_lfamily = AF_INET;
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return 0;
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}
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#ifndef _WIN32
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#define VMSTATE_SIN4_ADDR(f, s, t) VMSTATE_UINT32_TEST(f, s, t)
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#else
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/* Win uses u_long rather than uint32_t - but it's still 32bits long */
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#define VMSTATE_SIN4_ADDR(f, s, t) VMSTATE_SINGLE_TEST(f, s, t, 0, \
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vmstate_info_uint32, u_long)
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#endif
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/* The OS provided ss_family field isn't that portable; it's size
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* and type varies (16/8 bit, signed, unsigned)
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* and the values it contains aren't fully portable.
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*/
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typedef struct SS_FamilyTmpStruct {
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union slirp_sockaddr *parent;
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uint16_t portable_family;
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} SS_FamilyTmpStruct;
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#define SS_FAMILY_MIG_IPV4 2 /* Linux, BSD, Win... */
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#define SS_FAMILY_MIG_IPV6 10 /* Linux */
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#define SS_FAMILY_MIG_OTHER 0xffff
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static int ss_family_pre_save(void *opaque)
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{
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SS_FamilyTmpStruct *tss = opaque;
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tss->portable_family = SS_FAMILY_MIG_OTHER;
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if (tss->parent->ss.ss_family == AF_INET) {
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tss->portable_family = SS_FAMILY_MIG_IPV4;
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} else if (tss->parent->ss.ss_family == AF_INET6) {
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tss->portable_family = SS_FAMILY_MIG_IPV6;
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}
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return 0;
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}
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static int ss_family_post_load(void *opaque, int version_id)
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{
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SS_FamilyTmpStruct *tss = opaque;
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switch (tss->portable_family) {
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case SS_FAMILY_MIG_IPV4:
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tss->parent->ss.ss_family = AF_INET;
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break;
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case SS_FAMILY_MIG_IPV6:
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case 23: /* compatibility: AF_INET6 from mingw */
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case 28: /* compatibility: AF_INET6 from FreeBSD sys/socket.h */
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tss->parent->ss.ss_family = AF_INET6;
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break;
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default:
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g_critical("invalid ss_family type %x", tss->portable_family);
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return -EINVAL;
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}
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return 0;
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}
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static const VMStateDescription vmstate_slirp_ss_family = {
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.name = "slirp-socket-addr/ss_family",
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.pre_save = ss_family_pre_save,
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.post_load = ss_family_post_load,
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.fields = (VMStateField[]) {
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VMSTATE_UINT16(portable_family, SS_FamilyTmpStruct),
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VMSTATE_END_OF_LIST()
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}
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};
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static const VMStateDescription vmstate_slirp_socket_addr = {
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.name = "slirp-socket-addr",
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.version_id = 4,
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.fields = (VMStateField[]) {
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VMSTATE_WITH_TMP(union slirp_sockaddr, SS_FamilyTmpStruct,
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vmstate_slirp_ss_family),
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VMSTATE_SIN4_ADDR(sin.sin_addr.s_addr, union slirp_sockaddr,
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slirp_family_inet),
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VMSTATE_UINT16_TEST(sin.sin_port, union slirp_sockaddr,
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slirp_family_inet),
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#if 0
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/* Untested: Needs checking by someone with IPv6 test */
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VMSTATE_BUFFER_TEST(sin6.sin6_addr, union slirp_sockaddr,
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slirp_family_inet6),
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VMSTATE_UINT16_TEST(sin6.sin6_port, union slirp_sockaddr,
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slirp_family_inet6),
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VMSTATE_UINT32_TEST(sin6.sin6_flowinfo, union slirp_sockaddr,
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slirp_family_inet6),
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VMSTATE_UINT32_TEST(sin6.sin6_scope_id, union slirp_sockaddr,
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slirp_family_inet6),
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#endif
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VMSTATE_END_OF_LIST()
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}
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};
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static const VMStateDescription vmstate_slirp_socket = {
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.name = "slirp-socket",
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.version_id = 4,
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.pre_load = slirp_socket_pre_load,
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.fields = (VMStateField[]) {
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VMSTATE_UINT32(so_urgc, struct socket),
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/* Pre-v4 versions */
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VMSTATE_SIN4_ADDR(so_faddr.s_addr, struct socket,
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slirp_older_than_v4),
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VMSTATE_SIN4_ADDR(so_laddr.s_addr, struct socket,
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slirp_older_than_v4),
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VMSTATE_UINT16_TEST(so_fport, struct socket, slirp_older_than_v4),
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VMSTATE_UINT16_TEST(so_lport, struct socket, slirp_older_than_v4),
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/* v4 and newer */
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VMSTATE_STRUCT(fhost, struct socket, 4, vmstate_slirp_socket_addr,
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union slirp_sockaddr),
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VMSTATE_STRUCT(lhost, struct socket, 4, vmstate_slirp_socket_addr,
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union slirp_sockaddr),
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VMSTATE_UINT8(so_iptos, struct socket),
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VMSTATE_UINT8(so_emu, struct socket),
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|
||||||
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 const VMStateDescription vmstate_slirp_bootp_client = {
|
|
||||||
.name = "slirp_bootpclient",
|
|
||||||
.fields = (VMStateField[]) {
|
|
||||||
VMSTATE_UINT16(allocated, BOOTPClient),
|
|
||||||
VMSTATE_BUFFER(macaddr, BOOTPClient),
|
|
||||||
VMSTATE_END_OF_LIST()
|
|
||||||
}
|
|
||||||
};
|
|
||||||
|
|
||||||
static const VMStateDescription vmstate_slirp = {
|
|
||||||
.name = "slirp",
|
|
||||||
.version_id = 4,
|
|
||||||
.fields = (VMStateField[]) {
|
|
||||||
VMSTATE_UINT16_V(ip_id, Slirp, 2),
|
|
||||||
VMSTATE_STRUCT_ARRAY(bootp_clients, Slirp, NB_BOOTP_CLIENTS, 3,
|
|
||||||
vmstate_slirp_bootp_client, BOOTPClient),
|
|
||||||
VMSTATE_END_OF_LIST()
|
|
||||||
}
|
|
||||||
};
|
|
||||||
|
|
||||||
static void slirp_state_save(QEMUFile *f, void *opaque)
|
|
||||||
{
|
|
||||||
Slirp *slirp = opaque;
|
|
||||||
struct gfwd_list *ex_ptr;
|
|
||||||
|
|
||||||
for (ex_ptr = slirp->guestfwd_list; ex_ptr; ex_ptr = ex_ptr->ex_next)
|
|
||||||
if (ex_ptr->write_cb) {
|
|
||||||
struct socket *so;
|
|
||||||
so = slirp_find_ctl_socket(slirp, ex_ptr->ex_addr,
|
|
||||||
ntohs(ex_ptr->ex_fport));
|
|
||||||
if (!so)
|
|
||||||
continue;
|
|
||||||
|
|
||||||
qemu_put_byte(f, 42);
|
|
||||||
vmstate_save_state(f, &vmstate_slirp_socket, so, NULL);
|
|
||||||
}
|
|
||||||
qemu_put_byte(f, 0);
|
|
||||||
|
|
||||||
vmstate_save_state(f, &vmstate_slirp, slirp, NULL);
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
static int slirp_state_load(QEMUFile *f, void *opaque, int version_id)
|
|
||||||
{
|
|
||||||
Slirp *slirp = opaque;
|
|
||||||
struct gfwd_list *ex_ptr;
|
|
||||||
|
|
||||||
while (qemu_get_byte(f)) {
|
|
||||||
int ret;
|
|
||||||
struct socket *so = socreate(slirp);
|
|
||||||
|
|
||||||
ret = vmstate_load_state(f, &vmstate_slirp_socket, so, version_id);
|
|
||||||
|
|
||||||
if (ret < 0)
|
|
||||||
return ret;
|
|
||||||
|
|
||||||
if ((so->so_faddr.s_addr & slirp->vnetwork_mask.s_addr) !=
|
|
||||||
slirp->vnetwork_addr.s_addr) {
|
|
||||||
return -EINVAL;
|
|
||||||
}
|
|
||||||
for (ex_ptr = slirp->guestfwd_list; ex_ptr; ex_ptr = ex_ptr->ex_next) {
|
|
||||||
if (ex_ptr->write_cb &&
|
|
||||||
so->so_faddr.s_addr == ex_ptr->ex_addr.s_addr &&
|
|
||||||
so->so_fport == ex_ptr->ex_fport) {
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
if (!ex_ptr)
|
|
||||||
return -EINVAL;
|
|
||||||
}
|
|
||||||
|
|
||||||
return vmstate_load_state(f, &vmstate_slirp, slirp, version_id);
|
|
||||||
}
|
|
||||||
|
|
|
@ -271,4 +271,7 @@ int tcp_emu(struct socket *, struct mbuf *);
|
||||||
int tcp_ctl(struct socket *);
|
int tcp_ctl(struct socket *);
|
||||||
struct tcpcb *tcp_drop(struct tcpcb *tp, int err);
|
struct tcpcb *tcp_drop(struct tcpcb *tp, int err);
|
||||||
|
|
||||||
|
struct socket *
|
||||||
|
slirp_find_ctl_socket(Slirp *slirp, struct in_addr guest_addr, int guest_port);
|
||||||
|
|
||||||
#endif
|
#endif
|
||||||
|
|
|
@ -0,0 +1,394 @@
|
||||||
|
/*
|
||||||
|
* libslirp
|
||||||
|
*
|
||||||
|
* 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/osdep.h"
|
||||||
|
|
||||||
|
#include "slirp.h"
|
||||||
|
#include "state.h"
|
||||||
|
#include "migration/vmstate.h"
|
||||||
|
#include "migration/qemu-file-types.h"
|
||||||
|
#include "migration/register.h"
|
||||||
|
|
||||||
|
static int slirp_tcp_post_load(void *opaque, int version)
|
||||||
|
{
|
||||||
|
tcp_template((struct tcpcb *)opaque);
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static const VMStateDescription vmstate_slirp_tcp = {
|
||||||
|
.name = "slirp-tcp",
|
||||||
|
.version_id = 0,
|
||||||
|
.post_load = slirp_tcp_post_load,
|
||||||
|
.fields = (VMStateField[]) {
|
||||||
|
VMSTATE_INT16(t_state, struct tcpcb),
|
||||||
|
VMSTATE_INT16_ARRAY(t_timer, struct tcpcb, TCPT_NTIMERS),
|
||||||
|
VMSTATE_INT16(t_rxtshift, struct tcpcb),
|
||||||
|
VMSTATE_INT16(t_rxtcur, struct tcpcb),
|
||||||
|
VMSTATE_INT16(t_dupacks, struct tcpcb),
|
||||||
|
VMSTATE_UINT16(t_maxseg, struct tcpcb),
|
||||||
|
VMSTATE_UINT8(t_force, struct tcpcb),
|
||||||
|
VMSTATE_UINT16(t_flags, struct tcpcb),
|
||||||
|
VMSTATE_UINT32(snd_una, struct tcpcb),
|
||||||
|
VMSTATE_UINT32(snd_nxt, struct tcpcb),
|
||||||
|
VMSTATE_UINT32(snd_up, struct tcpcb),
|
||||||
|
VMSTATE_UINT32(snd_wl1, struct tcpcb),
|
||||||
|
VMSTATE_UINT32(snd_wl2, struct tcpcb),
|
||||||
|
VMSTATE_UINT32(iss, struct tcpcb),
|
||||||
|
VMSTATE_UINT32(snd_wnd, struct tcpcb),
|
||||||
|
VMSTATE_UINT32(rcv_wnd, struct tcpcb),
|
||||||
|
VMSTATE_UINT32(rcv_nxt, struct tcpcb),
|
||||||
|
VMSTATE_UINT32(rcv_up, struct tcpcb),
|
||||||
|
VMSTATE_UINT32(irs, struct tcpcb),
|
||||||
|
VMSTATE_UINT32(rcv_adv, struct tcpcb),
|
||||||
|
VMSTATE_UINT32(snd_max, struct tcpcb),
|
||||||
|
VMSTATE_UINT32(snd_cwnd, struct tcpcb),
|
||||||
|
VMSTATE_UINT32(snd_ssthresh, struct tcpcb),
|
||||||
|
VMSTATE_INT16(t_idle, struct tcpcb),
|
||||||
|
VMSTATE_INT16(t_rtt, struct tcpcb),
|
||||||
|
VMSTATE_UINT32(t_rtseq, struct tcpcb),
|
||||||
|
VMSTATE_INT16(t_srtt, struct tcpcb),
|
||||||
|
VMSTATE_INT16(t_rttvar, struct tcpcb),
|
||||||
|
VMSTATE_UINT16(t_rttmin, struct tcpcb),
|
||||||
|
VMSTATE_UINT32(max_sndwnd, struct tcpcb),
|
||||||
|
VMSTATE_UINT8(t_oobflags, struct tcpcb),
|
||||||
|
VMSTATE_UINT8(t_iobc, struct tcpcb),
|
||||||
|
VMSTATE_INT16(t_softerror, struct tcpcb),
|
||||||
|
VMSTATE_UINT8(snd_scale, struct tcpcb),
|
||||||
|
VMSTATE_UINT8(rcv_scale, struct tcpcb),
|
||||||
|
VMSTATE_UINT8(request_r_scale, struct tcpcb),
|
||||||
|
VMSTATE_UINT8(requested_s_scale, struct tcpcb),
|
||||||
|
VMSTATE_UINT32(ts_recent, struct tcpcb),
|
||||||
|
VMSTATE_UINT32(ts_recent_age, struct tcpcb),
|
||||||
|
VMSTATE_UINT32(last_ack_sent, struct tcpcb),
|
||||||
|
VMSTATE_END_OF_LIST()
|
||||||
|
}
|
||||||
|
};
|
||||||
|
|
||||||
|
/* The sbuf has a pair of pointers that are migrated as offsets;
|
||||||
|
* we calculate the offsets and restore the pointers using
|
||||||
|
* pre_save/post_load on a tmp structure.
|
||||||
|
*/
|
||||||
|
struct sbuf_tmp {
|
||||||
|
struct sbuf *parent;
|
||||||
|
uint32_t roff, woff;
|
||||||
|
};
|
||||||
|
|
||||||
|
static int sbuf_tmp_pre_save(void *opaque)
|
||||||
|
{
|
||||||
|
struct sbuf_tmp *tmp = opaque;
|
||||||
|
tmp->woff = tmp->parent->sb_wptr - tmp->parent->sb_data;
|
||||||
|
tmp->roff = tmp->parent->sb_rptr - tmp->parent->sb_data;
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int sbuf_tmp_post_load(void *opaque, int version)
|
||||||
|
{
|
||||||
|
struct sbuf_tmp *tmp = opaque;
|
||||||
|
uint32_t requested_len = tmp->parent->sb_datalen;
|
||||||
|
|
||||||
|
/* Allocate the buffer space used by the field after the tmp */
|
||||||
|
sbreserve(tmp->parent, tmp->parent->sb_datalen);
|
||||||
|
|
||||||
|
if (tmp->parent->sb_datalen != requested_len) {
|
||||||
|
return -ENOMEM;
|
||||||
|
}
|
||||||
|
if (tmp->woff >= requested_len ||
|
||||||
|
tmp->roff >= requested_len) {
|
||||||
|
g_critical("invalid sbuf offsets r/w=%u/%u len=%u",
|
||||||
|
tmp->roff, tmp->woff, requested_len);
|
||||||
|
return -EINVAL;
|
||||||
|
}
|
||||||
|
|
||||||
|
tmp->parent->sb_wptr = tmp->parent->sb_data + tmp->woff;
|
||||||
|
tmp->parent->sb_rptr = tmp->parent->sb_data + tmp->roff;
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
static const VMStateDescription vmstate_slirp_sbuf_tmp = {
|
||||||
|
.name = "slirp-sbuf-tmp",
|
||||||
|
.post_load = sbuf_tmp_post_load,
|
||||||
|
.pre_save = sbuf_tmp_pre_save,
|
||||||
|
.version_id = 0,
|
||||||
|
.fields = (VMStateField[]) {
|
||||||
|
VMSTATE_UINT32(woff, struct sbuf_tmp),
|
||||||
|
VMSTATE_UINT32(roff, struct sbuf_tmp),
|
||||||
|
VMSTATE_END_OF_LIST()
|
||||||
|
}
|
||||||
|
};
|
||||||
|
|
||||||
|
static const VMStateDescription vmstate_slirp_sbuf = {
|
||||||
|
.name = "slirp-sbuf",
|
||||||
|
.version_id = 0,
|
||||||
|
.fields = (VMStateField[]) {
|
||||||
|
VMSTATE_UINT32(sb_cc, struct sbuf),
|
||||||
|
VMSTATE_UINT32(sb_datalen, struct sbuf),
|
||||||
|
VMSTATE_WITH_TMP(struct sbuf, struct sbuf_tmp, vmstate_slirp_sbuf_tmp),
|
||||||
|
VMSTATE_VBUFFER_UINT32(sb_data, struct sbuf, 0, NULL, sb_datalen),
|
||||||
|
VMSTATE_END_OF_LIST()
|
||||||
|
}
|
||||||
|
};
|
||||||
|
|
||||||
|
static bool slirp_older_than_v4(void *opaque, int version_id)
|
||||||
|
{
|
||||||
|
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 int 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;
|
||||||
|
}
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
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:
|
||||||
|
g_critical("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 const VMStateDescription vmstate_slirp_bootp_client = {
|
||||||
|
.name = "slirp_bootpclient",
|
||||||
|
.fields = (VMStateField[]) {
|
||||||
|
VMSTATE_UINT16(allocated, BOOTPClient),
|
||||||
|
VMSTATE_BUFFER(macaddr, BOOTPClient),
|
||||||
|
VMSTATE_END_OF_LIST()
|
||||||
|
}
|
||||||
|
};
|
||||||
|
|
||||||
|
static const VMStateDescription vmstate_slirp = {
|
||||||
|
.name = "slirp",
|
||||||
|
.version_id = 4,
|
||||||
|
.fields = (VMStateField[]) {
|
||||||
|
VMSTATE_UINT16_V(ip_id, Slirp, 2),
|
||||||
|
VMSTATE_STRUCT_ARRAY(bootp_clients, Slirp, NB_BOOTP_CLIENTS, 3,
|
||||||
|
vmstate_slirp_bootp_client, BOOTPClient),
|
||||||
|
VMSTATE_END_OF_LIST()
|
||||||
|
}
|
||||||
|
};
|
||||||
|
|
||||||
|
static void slirp_state_save(QEMUFile *f, void *opaque)
|
||||||
|
{
|
||||||
|
Slirp *slirp = opaque;
|
||||||
|
struct gfwd_list *ex_ptr;
|
||||||
|
|
||||||
|
for (ex_ptr = slirp->guestfwd_list; ex_ptr; ex_ptr = ex_ptr->ex_next)
|
||||||
|
if (ex_ptr->write_cb) {
|
||||||
|
struct socket *so;
|
||||||
|
so = slirp_find_ctl_socket(slirp, ex_ptr->ex_addr,
|
||||||
|
ntohs(ex_ptr->ex_fport));
|
||||||
|
if (!so) {
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
|
||||||
|
qemu_put_byte(f, 42);
|
||||||
|
vmstate_save_state(f, &vmstate_slirp_socket, so, NULL);
|
||||||
|
}
|
||||||
|
qemu_put_byte(f, 0);
|
||||||
|
|
||||||
|
vmstate_save_state(f, &vmstate_slirp, slirp, NULL);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
static int slirp_state_load(QEMUFile *f, void *opaque, int version_id)
|
||||||
|
{
|
||||||
|
Slirp *slirp = opaque;
|
||||||
|
struct gfwd_list *ex_ptr;
|
||||||
|
|
||||||
|
while (qemu_get_byte(f)) {
|
||||||
|
int ret;
|
||||||
|
struct socket *so = socreate(slirp);
|
||||||
|
|
||||||
|
ret = vmstate_load_state(f, &vmstate_slirp_socket, so, version_id);
|
||||||
|
if (ret < 0) {
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
if ((so->so_faddr.s_addr & slirp->vnetwork_mask.s_addr) !=
|
||||||
|
slirp->vnetwork_addr.s_addr) {
|
||||||
|
return -EINVAL;
|
||||||
|
}
|
||||||
|
for (ex_ptr = slirp->guestfwd_list; ex_ptr; ex_ptr = ex_ptr->ex_next) {
|
||||||
|
if (ex_ptr->write_cb &&
|
||||||
|
so->so_faddr.s_addr == ex_ptr->ex_addr.s_addr &&
|
||||||
|
so->so_fport == ex_ptr->ex_fport) {
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
if (!ex_ptr) {
|
||||||
|
return -EINVAL;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
return vmstate_load_state(f, &vmstate_slirp, slirp, version_id);
|
||||||
|
}
|
||||||
|
|
||||||
|
void slirp_state_register(Slirp *slirp)
|
||||||
|
{
|
||||||
|
static SaveVMHandlers savevm_slirp_state = {
|
||||||
|
.save_state = slirp_state_save,
|
||||||
|
.load_state = slirp_state_load,
|
||||||
|
};
|
||||||
|
|
||||||
|
register_savevm_live(NULL, "slirp", 0, 4, &savevm_slirp_state, slirp);
|
||||||
|
}
|
||||||
|
|
||||||
|
void slirp_state_unregister(Slirp *slirp)
|
||||||
|
{
|
||||||
|
unregister_savevm(NULL, "slirp", slirp);
|
||||||
|
}
|
|
@ -0,0 +1,9 @@
|
||||||
|
#ifndef SLIRP_STATE_H_
|
||||||
|
#define SLIRP_STATE_H_
|
||||||
|
|
||||||
|
#include "libslirp.h"
|
||||||
|
|
||||||
|
void slirp_state_register(Slirp *slirp);
|
||||||
|
void slirp_state_unregister(Slirp *slirp);
|
||||||
|
|
||||||
|
#endif /* SLIRP_STATE_H_ */
|
Loading…
Reference in New Issue