Resending this patch again aligned with the latest trunk.
The change is now also at IPoIB_NDIS6_CM.
This patch is essential for 4K MTU support
Index: hw/mlx4/kernel/bus/net/port.c
===================================================================
--- hw/mlx4/kernel/bus/net/port.c (revision 2934)
+++ hw/mlx4/kernel/bus/net/port.c (working copy)
@@ -355,6 +355,14 @@
ETH_HLEN + ETH_FCS_LEN);
((__be16 *) mailbox->buf)[4] = cpu_to_be16(1 << 15);
((__be16 *) mailbox->buf)[6] = cpu_to_be16(1 << 15);
+ } else {
+ /* IB PORT */
+
+ ((__be32 *) mailbox->buf)[0] |= cpu_to_be32((1 << 22) | (1 <<
21) | (5 << 12) | (2 << 4));
+ /* Set mmc bit no. 22 to allow MAX_MTU_SIZE change */
+ /* Set mvc bit no. 21 to allow vl_cap change /*
+ /* Always set MAX_MTU_SIZE == 4K for MLX4 - bits 12:15 */
+ /* Change vl_cap to be maximum 4 - bits 5:7 */
}
err = mlx4_cmd(dev, mailbox->dma.da, port, is_eth, MLX4_CMD_SET_PORT,
MLX4_CMD_TIME_CLASS_B);
Index: ulp/ipoib_NDIS6_CM/kernel/ipoib_driver.cpp
===================================================================
--- ulp/ipoib_NDIS6_CM/kernel/ipoib_driver.cpp (revision 2934)
+++ ulp/ipoib_NDIS6_CM/kernel/ipoib_driver.cpp (working copy)
@@ -1038,7 +1038,10 @@
gat.MediaConnectState = MediaConnectStateConnected; //TODO NDIS60 Check
the current state
gat.MediaDuplexState = MediaDuplexStateFull;
- gat.MtuSize = DEFAULT_PAYLOAD_MTU;
+ //TODO add support for CM MTU
+ gat.MtuSize = p_adapter->params.payload_mtu;
+ // TODO Can we set gat.MtuSize = p_adapter->params.payload_mtu + sizeof
(ipoib_hdr_t)
+ // That is because we replace ETH header by IPoIB header and do not
allocate additional place
gat.LookaheadSize = MAX_XFER_BLOCK_SIZE;
gat.MacOptions = NDIS_MAC_OPTION_COPY_LOOKAHEAD_DATA |
NDIS_MAC_OPTION_TRANSFERS_NOT_PEND |
From: Alex Naslednikov
Sent: Thursday, December 17, 2009 5:42 PM
To: [email protected]
Subject: [ofw] [PATCH] [ibbus]
This patch enables 4K MTU support for CX and CX-II cards with FW ver. 2.7.000
and upper
Signed of by: Alexander Naslednikov (xalex at mellanox.co.il)
===================================================================
--- D:/windows/MLNX_WinOF_trunk/hw/mlx4/kernel/bus/net/port.c (revision 5259)
+++ D:/windows/MLNX_WinOF_trunk/hw/mlx4/kernel/bus/net/port.c (revision 5260)
@@ -355,6 +355,14 @@
ETH_HLEN + ETH_FCS_LEN);
((__be16 *) mailbox->buf)[4] = cpu_to_be16(1 << 15);
((__be16 *) mailbox->buf)[6] = cpu_to_be16(1 << 15);
+ } else {
+ /* IB PORT */
+
+ ((__be32 *) mailbox->buf)[0] |= cpu_to_be32((1 << 22) | (1 << 21) | (5 <<
12) | (2 << 4));
+ /* Set mmc bit no. 22 to allow MAX_MTU_SIZE change */
+ /* Set mvc bit no. 21 to allow vl_cap change /*
+ /* Always set MAX_MTU_SIZE == 4K for MLX4 - bits 12:15 */
+ /* Change vl_cap to be maximum 4 - bits 5:7 */
}
err = mlx4_cmd(dev, mailbox->dma.da, port, is_eth, MLX4_CMD_SET_PORT,
MLX4_CMD_TIME_CLASS_B);
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