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From d0c668aa0ad255c3598267816154874541ac2943 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= <marcandre.lureau@redhat.com>
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Date: Thu, 29 Jul 2021 04:56:42 -0400
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Subject: [PATCH 12/14] Fix "DHCP broken in libslirp v4.6.0"
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: Marc-André Lureau <marcandre.lureau@redhat.com>
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Message-id: <20210708082537.1550263-9-marcandre.lureau@redhat.com>
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Patchwork-id: 101824
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O-Subject: [RHEL-8.5.0 qemu-kvm PATCH 8/8] Fix "DHCP broken in libslirp v4.6.0"
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Bugzilla: 1970819 1970835 1970843 1970853
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RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
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RH-Acked-by: Eric Blake <eblake@redhat.com>
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RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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From: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>
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Fix issue 48
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Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>
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(cherry picked from commit c9f314f6e315a5518432761fea864196a290f799)
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[ minor conflict fix due to indentation change ]
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Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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slirp/src/bootp.c | 12 ++++++------
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1 file changed, 6 insertions(+), 6 deletions(-)
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diff --git a/slirp/src/bootp.c b/slirp/src/bootp.c
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index 5789187166..3e4af075f1 100644
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--- a/slirp/src/bootp.c
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+++ b/slirp/src/bootp.c
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@@ -354,14 +354,14 @@ static void bootp_reply(Slirp *slirp,
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q += sizeof(nak_msg) - 1;
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}
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assert(q < end);
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- *q =
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-RFC1533_END
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-;
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+ *q = RFC1533_END;
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-daddr.sin_addr.s_addr = 0xffffffffu;
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+ daddr.sin_addr.s_addr = 0xffffffffu;
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-m->m_len = sizeof(struct bootp_t) - sizeof(struct ip) - sizeof(struct udphdr);
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-udp_output(NULL, m, &saddr, &daddr, IPTOS_LOWDELAY);
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+ assert ((q - rbp->bp_vend + 1) <= DHCP_OPT_LEN);
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+
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+ m->m_len = sizeof(struct bootp_t) + (q - rbp->bp_vend + 1) - sizeof(struct ip) - sizeof(struct udphdr);
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+ udp_output(NULL, m, &saddr, &daddr, IPTOS_LOWDELAY);
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}
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void bootp_input(struct mbuf *m)
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--
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2.27.0
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