This is a note to let you know that I've just added the patch titled
igbvf: Change IGBVF_MIN to allow set rx/tx value between 64 and 80
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
igbvf-change-igbvf_min-to-allow-set-rx-tx-value-betw.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit fb6953466c1311ce013424bba62ca07f4f0bbcfd
Author: Olga Zaborska <olga.zaborska@xxxxxxxxx>
Date: Tue Jul 25 10:10:57 2023 +0200
igbvf: Change IGBVF_MIN to allow set rx/tx value between 64 and 80
[ Upstream commit 8360717524a24a421c36ef8eb512406dbd42160a ]
Change the minimum value of RX/TX descriptors to 64 to enable setting the rx/tx
value between 64 and 80. All igbvf devices can use as low as 64 descriptors.
This change will unify igbvf with other drivers.
Based on commit 7b1be1987c1e ("e1000e: lower ring minimum size to 64")
Fixes: d4e0fe01a38a ("igbvf: add new driver to support 82576 virtual functions")
Signed-off-by: Olga Zaborska <olga.zaborska@xxxxxxxxx>
Tested-by: Rafal Romanowski <rafal.romanowski@xxxxxxxxx>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/intel/igbvf/igbvf.h b/drivers/net/ethernet/intel/igbvf/igbvf.h
index eee26a3be90ba..52545cb25d058 100644
--- a/drivers/net/ethernet/intel/igbvf/igbvf.h
+++ b/drivers/net/ethernet/intel/igbvf/igbvf.h
@@ -39,11 +39,11 @@ enum latency_range {
/* Tx/Rx descriptor defines */
#define IGBVF_DEFAULT_TXD 256
#define IGBVF_MAX_TXD 4096
-#define IGBVF_MIN_TXD 80
+#define IGBVF_MIN_TXD 64
#define IGBVF_DEFAULT_RXD 256
#define IGBVF_MAX_RXD 4096
-#define IGBVF_MIN_RXD 80
+#define IGBVF_MIN_RXD 64
#define IGBVF_MIN_ITR_USECS 10 /* 100000 irq/sec */
#define IGBVF_MAX_ITR_USECS 10000 /* 100 irq/sec */
