From patchwork Thu Oct 27 15:32:14 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Dr. David Alan Gilbert" X-Patchwork-Id: 687790 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3t4XfQ5G3pz9ryv for ; Fri, 28 Oct 2016 03:39:26 +1100 (AEDT) Received: from localhost ([::1]:42876 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bzni7-0002W4-LN for incoming@patchwork.ozlabs.org; Thu, 27 Oct 2016 12:39:23 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:48753) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bzmfR-0006BN-KV for qemu-devel@nongnu.org; Thu, 27 Oct 2016 11:32:37 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bzmfN-0001tg-7s for qemu-devel@nongnu.org; Thu, 27 Oct 2016 11:32:33 -0400 Received: from mx1.redhat.com ([209.132.183.28]:41672) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1bzmfM-0001tR-W9 for qemu-devel@nongnu.org; Thu, 27 Oct 2016 11:32:29 -0400 Received: from int-mx14.intmail.prod.int.phx2.redhat.com (int-mx14.intmail.prod.int.phx2.redhat.com [10.5.11.27]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 38BAD61BAE; Thu, 27 Oct 2016 15:32:28 +0000 (UTC) Received: from dgilbert-t530.redhat.com ([10.33.36.3]) by int-mx14.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u9RFWIRB000489; Thu, 27 Oct 2016 11:32:26 -0400 From: "Dr. David Alan Gilbert (git)" To: qemu-devel@nongnu.org, quintela@redhat.com, amit.shah@redhat.com, samuel.thibault@ens-lyon.org, jan.kiszka@siemens.com Date: Thu, 27 Oct 2016 16:32:14 +0100 Message-Id: <20161027153217.16984-6-dgilbert@redhat.com> In-Reply-To: <20161027153217.16984-1-dgilbert@redhat.com> References: <20161027153217.16984-1-dgilbert@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.27 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.39]); Thu, 27 Oct 2016 15:32:28 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH 5/8] slirp: VMState conversion; tcpcb X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: duanj@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: "Dr. David Alan Gilbert" Convert the migration of the struct tcpcb to use a VMStateDescription, the rest of it will come later. Mostly mechanical, except for conversion of some 'char' to uint8_t to ensure portability. Signed-off-by: Dr. David Alan Gilbert Reviewed-by: Samuel Thibault Reviewed-by: Juan Quintela --- slirp/slirp.c | 149 ++++++++++++++++++++------------------------------------ slirp/tcp_var.h | 6 +-- 2 files changed, 57 insertions(+), 98 deletions(-) diff --git a/slirp/slirp.c b/slirp/slirp.c index 6e2b4e5..6276315 100644 --- a/slirp/slirp.c +++ b/slirp/slirp.c @@ -1129,53 +1129,62 @@ void slirp_socket_recv(Slirp *slirp, struct in_addr guest_addr, int guest_port, tcp_output(sototcpcb(so)); } -static void slirp_tcp_save(QEMUFile *f, struct tcpcb *tp) +static int slirp_tcp_post_load(void *opaque, int version) { - int i; + tcp_template((struct tcpcb *)opaque); - 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); + 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() + } +}; + static void slirp_sbuf_save(QEMUFile *f, struct sbuf *sbuf) { uint32_t off; @@ -1218,7 +1227,7 @@ static void slirp_socket_save(QEMUFile *f, struct socket *so) 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); + vmstate_save_state(f, &vmstate_slirp_tcp, so->so_tcpcb, 0); } static void slirp_bootp_save(QEMUFile *f, Slirp *slirp) @@ -1254,54 +1263,6 @@ static void slirp_state_save(QEMUFile *f, void *opaque) slirp_bootp_save(f, slirp); } -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; @@ -1367,9 +1328,7 @@ static int slirp_socket_load(QEMUFile *f, struct socket *so, int version_id) return -ENOMEM; if (slirp_sbuf_load(f, &so->so_snd) < 0) return -ENOMEM; - slirp_tcp_load(f, so->so_tcpcb); - - return 0; + return vmstate_load_state(f, &vmstate_slirp_tcp, so->so_tcpcb, 0); } static void slirp_bootp_load(QEMUFile *f, Slirp *slirp) diff --git a/slirp/tcp_var.h b/slirp/tcp_var.h index 0f8f187..895ef6d 100644 --- a/slirp/tcp_var.h +++ b/slirp/tcp_var.h @@ -48,7 +48,7 @@ struct tcpcb { short t_rxtcur; /* current retransmit value */ short t_dupacks; /* consecutive dup acks recd */ u_short t_maxseg; /* maximum segment size */ - char t_force; /* 1 if forcing out a byte */ + uint8_t t_force; /* 1 if forcing out a byte */ u_short t_flags; #define TF_ACKNOW 0x0001 /* ack peer immediately */ #define TF_DELACK 0x0002 /* ack, but try to delay it */ @@ -109,8 +109,8 @@ struct tcpcb { uint32_t max_sndwnd; /* largest window peer has offered */ /* out-of-band data */ - char t_oobflags; /* have some */ - char t_iobc; /* input character */ + uint8_t t_oobflags; /* have some */ + uint8_t t_iobc; /* input character */ #define TCPOOB_HAVEDATA 0x01 #define TCPOOB_HADDATA 0x02 short t_softerror; /* possible error not yet reported */