[PULL 4/6] hw/net/igb: recalculate rx_desc_len on migration load

From: Laurent Vivier <[email protected]>

rx_desc_len is migrated as a raw uint8_t from the stream but is a
derived value. Currently igb_rx_use_legacy_descriptor() is a stub
that always returns false, so rx_desc_len is always set to
sizeof(union e1000_adv_rx_desc). Recalculate it in post_load to
prevent a crafted migration stream from setting an invalid value.

Cc: [email protected]
Signed-off-by: Laurent Vivier <[email protected]>
Reviewed-by: Akihiko Odaki <[email protected]>
Message-ID: <[email protected]>
Reviewed-by: Philippe Mathieu-Daudé <[email protected]>
Signed-off-by: Philippe Mathieu-Daudé <[email protected]>
---
 hw/net/igb_core.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/hw/net/igb_core.c b/hw/net/igb_core.c
index 45d8fd795b8..2a488390735 100644
--- a/hw/net/igb_core.c
+++ b/hw/net/igb_core.c
@@ -4548,5 +4548,7 @@ igb_core_post_load(IGBCore *core)
     igb_intrmgr_resume(core);
     igb_autoneg_resume(core);
 
+    igb_calc_rxdesclen(core);
+
     return 0;
 }
-- 
2.53.0