From: Stefano Brivio <sbrivio@redhat.com>
To: passt-dev@passt.top
Cc: Laurent Jacquot <jk@lutty.net>,
David Gibson <david@gibson.dropbear.id.au>
Subject: [PATCH 1/2] Revert "udp: Make rport calculation more local"
Date: Fri, 21 Jun 2024 17:53:22 +0200 [thread overview]
Message-ID: <20240621155323.1313483-2-sbrivio@redhat.com> (raw)
In-Reply-To: <20240621155323.1313483-1-sbrivio@redhat.com>
This reverts commit c80fa6a6bb4415ad48f9e11424310875d0d99bc7, as it
reintroduces the issue fixed by commit 1e6f92b995a9 ("udp: Fix 16-bit
overflow in udp_invert_portmap()").
Reported-by: Laurent Jacquot <jk@lutty.net>
Link: https://bugs.passt.top/show_bug.cgi?id=80
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
---
udp.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/udp.c b/udp.c
index e79ca93..8181900 100644
--- a/udp.c
+++ b/udp.c
@@ -279,9 +279,10 @@ static void udp_invert_portmap(struct udp_fwd_ports *fwd)
"Forward and reverse delta arrays must have same size");
for (i = 0; i < ARRAY_SIZE(fwd->f.delta); i++) {
in_port_t delta = fwd->f.delta[i];
+ in_port_t rport = i + delta;
if (delta)
- fwd->rdelta[i + delta] = NUM_PORTS - delta;
+ fwd->rdelta[rport] = NUM_PORTS - delta;
}
}
--
@@ -279,9 +279,10 @@ static void udp_invert_portmap(struct udp_fwd_ports *fwd)
"Forward and reverse delta arrays must have same size");
for (i = 0; i < ARRAY_SIZE(fwd->f.delta); i++) {
in_port_t delta = fwd->f.delta[i];
+ in_port_t rport = i + delta;
if (delta)
- fwd->rdelta[i + delta] = NUM_PORTS - delta;
+ fwd->rdelta[rport] = NUM_PORTS - delta;
}
}
--
2.43.0
next prev parent reply other threads:[~2024-06-21 15:53 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-21 15:53 [PATCH 0/2] Fix bug #80 again Stefano Brivio
2024-06-21 15:53 ` Stefano Brivio [this message]
2024-06-24 1:20 ` [PATCH 1/2] Revert "udp: Make rport calculation more local" David Gibson
2024-06-24 19:08 ` Stefano Brivio
2024-06-21 15:53 ` [PATCH 2/2] udp: Reduce scope of rport in udp_invert_portmap() Stefano Brivio
2024-06-24 1:21 ` David Gibson
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