From patchwork Thu Feb 4 08:31:40 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Wang X-Patchwork-Id: 8214791 Return-Path: X-Original-To: patchwork-qemu-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 97A0C9F37A for ; Thu, 4 Feb 2016 08:35:27 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id D0F652037E for ; Thu, 4 Feb 2016 08:35:26 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id BF9D82037C for ; Thu, 4 Feb 2016 08:35:24 +0000 (UTC) Received: from localhost ([::1]:40254 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aRFNs-0004ox-4c for patchwork-qemu-devel@patchwork.kernel.org; Thu, 04 Feb 2016 03:35:24 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:35245) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aRFLY-0008Tx-6p for qemu-devel@nongnu.org; Thu, 04 Feb 2016 03:33:03 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aRFLW-0007x1-WD for qemu-devel@nongnu.org; Thu, 04 Feb 2016 03:33:00 -0500 Received: from mx1.redhat.com ([209.132.183.28]:52003) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aRFLW-0007wx-K1 for qemu-devel@nongnu.org; Thu, 04 Feb 2016 03:32:58 -0500 Received: from int-mx14.intmail.prod.int.phx2.redhat.com (int-mx14.intmail.prod.int.phx2.redhat.com [10.5.11.27]) by mx1.redhat.com (Postfix) with ESMTPS id 457C3859F8; Thu, 4 Feb 2016 08:32:58 +0000 (UTC) Received: from jason-ThinkPad-T430s.redhat.com (vpn1-7-60.pek2.redhat.com [10.72.7.60]) by int-mx14.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u148VnLN022765; Thu, 4 Feb 2016 03:32:51 -0500 From: Jason Wang To: peter.maydell@linaro.org, qemu-devel@nongnu.org Date: Thu, 4 Feb 2016 16:31:40 +0800 Message-Id: <1454574706-5681-12-git-send-email-jasowang@redhat.com> In-Reply-To: <1454574706-5681-1-git-send-email-jasowang@redhat.com> References: <1454574706-5681-1-git-send-email-jasowang@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.27 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 209.132.183.28 Cc: Samuel Thibault , Jason Wang , Guillaume Subiron Subject: [Qemu-devel] [PULL V2 11/17] slirp: Add sockaddr_equal, make solookup family-agnostic X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Guillaume Subiron This patch makes solookup() compatible with varying address families, by using a new sockaddr_equal() function that compares two sockaddr_storage. This prepares for IPv6 support. Signed-off-by: Guillaume Subiron Signed-off-by: Samuel Thibault Reviewed-by: Thomas Huth Signed-off-by: Jason Wang --- slirp/socket.c | 21 ++++++--------------- slirp/socket.h | 24 +++++++++++++++++++++++- slirp/tcp_input.c | 23 ++++++++++++++--------- slirp/udp.c | 10 ++++++++-- 4 files changed, 51 insertions(+), 27 deletions(-) diff --git a/slirp/socket.c b/slirp/socket.c index 8f73e90..f7e5968 100644 --- a/slirp/socket.c +++ b/slirp/socket.c @@ -15,29 +15,20 @@ static void sofcantrcvmore(struct socket *so); static void sofcantsendmore(struct socket *so); -struct socket * -solookup(struct socket **last, struct socket *head, - struct in_addr laddr, u_int lport, - struct in_addr faddr, u_int fport) +struct socket *solookup(struct socket **last, struct socket *head, + struct sockaddr_storage *lhost, struct sockaddr_storage *fhost) { struct socket *so = *last; /* Optimisation */ - if (so != head && - so->so_lport == lport && - so->so_laddr.s_addr == laddr.s_addr && - (!faddr.s_addr || - (so->so_faddr.s_addr == faddr.s_addr && - so->so_fport == fport))) { + if (so != head && sockaddr_equal(&(so->lhost.ss), lhost) + && (!fhost || sockaddr_equal(&so->fhost.ss, fhost))) { return so; } for (so = head->so_next; so != head; so = so->so_next) { - if (so->so_lport == lport && - so->so_laddr.s_addr == laddr.s_addr && - (!faddr.s_addr || - (so->so_faddr.s_addr == faddr.s_addr && - so->so_fport == fport))) { + if (sockaddr_equal(&(so->lhost.ss), lhost) + && (!fhost || sockaddr_equal(&so->fhost.ss, fhost))) { *last = so; return so; } diff --git a/slirp/socket.h b/slirp/socket.h index 1c8c24c..c4afc94 100644 --- a/slirp/socket.h +++ b/slirp/socket.h @@ -87,8 +87,30 @@ struct socket { #define SS_HOSTFWD 0x1000 /* Socket describes host->guest forwarding */ #define SS_INCOMING 0x2000 /* Connection was initiated by a host on the internet */ +static inline int sockaddr_equal(struct sockaddr_storage *a, + struct sockaddr_storage *b) +{ + if (a->ss_family != b->ss_family) { + return 0; + } + + switch (a->ss_family) { + case AF_INET: + { + struct sockaddr_in *a4 = (struct sockaddr_in *) a; + struct sockaddr_in *b4 = (struct sockaddr_in *) b; + return a4->sin_addr.s_addr == b4->sin_addr.s_addr + && a4->sin_port == b4->sin_port; + } + default: + g_assert_not_reached(); + } + + return 0; +} + struct socket *solookup(struct socket **, struct socket *, - struct in_addr, u_int, struct in_addr, u_int); + struct sockaddr_storage *, struct sockaddr_storage *); struct socket *socreate(Slirp *); void sofree(struct socket *); int soread(struct socket *); diff --git a/slirp/tcp_input.c b/slirp/tcp_input.c index 5492061..5e2773c 100644 --- a/slirp/tcp_input.c +++ b/slirp/tcp_input.c @@ -227,6 +227,8 @@ 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 ex_list *ex_ptr; Slirp *slirp; @@ -320,9 +322,16 @@ tcp_input(struct mbuf *m, int iphlen, struct socket *inso) * Locate pcb for segment. */ findso: - so = solookup(&slirp->tcp_last_so, &slirp->tcb, - ti->ti_src, ti->ti_sport, - ti->ti_dst, ti->ti_dport); + lhost.ss_family = AF_INET; + lhost4 = (struct sockaddr_in *) &lhost; + lhost4->sin_addr = ti->ti_src; + lhost4->sin_port = ti->ti_sport; + fhost.ss_family = AF_INET; + fhost4 = (struct sockaddr_in *) &fhost; + fhost4->sin_addr = ti->ti_dst; + fhost4->sin_port = ti->ti_dport; + + so = solookup(&slirp->tcp_last_so, &slirp->tcb, &lhost, &fhost); /* * If the state is CLOSED (i.e., TCB does not exist) then @@ -367,12 +376,8 @@ findso: sbreserve(&so->so_snd, TCP_SNDSPACE); sbreserve(&so->so_rcv, TCP_RCVSPACE); - so->so_lfamily = AF_INET; - so->so_laddr = ti->ti_src; - so->so_lport = ti->ti_sport; - so->so_ffamily = AF_INET; - so->so_faddr = ti->ti_dst; - so->so_fport = ti->ti_dport; + so->lhost.ss = lhost; + so->fhost.ss = fhost; if ((so->so_iptos = tcp_tos(so)) == 0) so->so_iptos = ((struct ip *)ti)->ip_tos; diff --git a/slirp/udp.c b/slirp/udp.c index 126ef82..63776c0 100644 --- a/slirp/udp.c +++ b/slirp/udp.c @@ -70,6 +70,8 @@ udp_input(register struct mbuf *m, int iphlen) int len; struct ip save_ip; struct socket *so; + struct sockaddr_storage lhost; + struct sockaddr_in *lhost4; DEBUG_CALL("udp_input"); DEBUG_ARG("m = %p", m); @@ -151,8 +153,12 @@ udp_input(register struct mbuf *m, int iphlen) /* * Locate pcb for datagram. */ - so = solookup(&slirp->udp_last_so, &slirp->udb, - ip->ip_src, uh->uh_sport, (struct in_addr) {0}, 0); + lhost.ss_family = AF_INET; + lhost4 = (struct sockaddr_in *) &lhost; + lhost4->sin_addr = ip->ip_src; + lhost4->sin_port = uh->uh_sport; + + so = solookup(&slirp->udp_last_so, &slirp->udb, &lhost, NULL); if (so == NULL) { /*