This is a note to let you know that I've just added the patch titled
net/mlx4: Correctly configure single ported VFs from the host
to the 3.16-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:
net-mlx4-correctly-configure-single-ported-vfs-from-the-host.patch
and it can be found in the queue-3.16 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Sun Oct 12 20:11:55 CEST 2014
From: Matan Barak <matanb@xxxxxxxxxxxx>
Date: Wed, 10 Sep 2014 16:41:53 +0300
Subject: net/mlx4: Correctly configure single ported VFs from the host
From: Matan Barak <matanb@xxxxxxxxxxxx>
[ Upstream commit a91c772fa0275163508e1078ff6d474d423244fb ]
Single port VFs are seen PCI wise on both ports of the PF (we don't have
single port PFs with ConnectX). With this in mind, it's possible for
virtualization tools to try and configure a single ported VF through
the "wrong" PF port.
To handle that, we use the PF driver mapping of single port VFs to NIC
ports and adjust the port value before calling into the low level
code that does the actual VF configuration
Fixes: 449fc48 ('net/mlx4: Adapt code for N-Port VF')
Signed-off-by: Matan Barak <matanb@xxxxxxxxxxxx>
Signed-off-by: Or Gerlitz <ogerlitz@xxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/ethernet/mellanox/mlx4/cmd.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
--- a/drivers/net/ethernet/mellanox/mlx4/cmd.c
+++ b/drivers/net/ethernet/mellanox/mlx4/cmd.c
@@ -2380,6 +2380,22 @@ struct mlx4_slaves_pport mlx4_phys_to_sl
}
EXPORT_SYMBOL_GPL(mlx4_phys_to_slaves_pport_actv);
+static int mlx4_slaves_closest_port(struct mlx4_dev *dev, int slave, int port)
+{
+ struct mlx4_active_ports actv_ports = mlx4_get_active_ports(dev, slave);
+ int min_port = find_first_bit(actv_ports.ports, dev->caps.num_ports)
+ + 1;
+ int max_port = min_port +
+ bitmap_weight(actv_ports.ports, dev->caps.num_ports);
+
+ if (port < min_port)
+ port = min_port;
+ else if (port >= max_port)
+ port = max_port - 1;
+
+ return port;
+}
+
int mlx4_set_vf_mac(struct mlx4_dev *dev, int port, int vf, u64 mac)
{
struct mlx4_priv *priv = mlx4_priv(dev);
@@ -2393,6 +2409,7 @@ int mlx4_set_vf_mac(struct mlx4_dev *dev
if (slave < 0)
return -EINVAL;
+ port = mlx4_slaves_closest_port(dev, slave, port);
s_info = &priv->mfunc.master.vf_admin[slave].vport[port];
s_info->mac = mac;
mlx4_info(dev, "default mac on vf %d port %d to %llX will take afect only after vf restart\n",
@@ -2419,6 +2436,7 @@ int mlx4_set_vf_vlan(struct mlx4_dev *de
if (slave < 0)
return -EINVAL;
+ port = mlx4_slaves_closest_port(dev, slave, port);
vf_admin = &priv->mfunc.master.vf_admin[slave].vport[port];
if ((0 == vlan) && (0 == qos))
@@ -2446,6 +2464,7 @@ bool mlx4_get_slave_default_vlan(struct
struct mlx4_priv *priv;
priv = mlx4_priv(dev);
+ port = mlx4_slaves_closest_port(dev, slave, port);
vp_oper = &priv->mfunc.master.vf_oper[slave].vport[port];
if (MLX4_VGT != vp_oper->state.default_vlan) {
@@ -2473,6 +2492,7 @@ int mlx4_set_vf_spoofchk(struct mlx4_dev
if (slave < 0)
return -EINVAL;
+ port = mlx4_slaves_closest_port(dev, slave, port);
s_info = &priv->mfunc.master.vf_admin[slave].vport[port];
s_info->spoofchk = setting;
@@ -2526,6 +2546,7 @@ int mlx4_set_vf_link_state(struct mlx4_d
if (slave < 0)
return -EINVAL;
+ port = mlx4_slaves_closest_port(dev, slave, port);
switch (link_state) {
case IFLA_VF_LINK_STATE_AUTO:
/* get current link state */
Patches currently in stable-queue which might be from matanb@xxxxxxxxxxxx are
queue-3.16/net-mlx4_core-allow-not-to-specify-probe_vf-in-sriov-ib-mode.patch
queue-3.16/net-mlx4-correctly-configure-single-ported-vfs-from-the-host.patch
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html