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authorAleksey Senin <alex@senin.name>2010-12-02 14:44:49 +0300
committerRoland Dreier <rolandd@cisco.com>2011-01-13 01:49:17 +0300
commitda995a8aee044bc5d0847e19e351cd48a2cb8bcc (patch)
tree000cb11c5e49e1bc91a2212ed5a2299f279c990b /drivers/net/mlx4
parent4979d18fe105297f8f065743f31f8f735da8df2d (diff)
downloadlinux-da995a8aee044bc5d0847e19e351cd48a2cb8bcc.tar.xz
IB/mlx4: Handle protocol field in multicast table
The newest device firmware stores IB vs. Ethernet protocol in two bits in members_count field of multicast group table (0: Infiniband, 1: Ethernet). When changing the QP members count for a multicast group, it important not to reset this information. When calling multicast attach first time, the protocol type should be specified. In this patch we always set it IB, but in the future we will handle Ethernet too. When looking for a QP, the protocol type shoud be checked too. Signed-off-by: Aleksey Senin <alekseys@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/net/mlx4')
-rw-r--r--drivers/net/mlx4/mcg.c23
1 files changed, 13 insertions, 10 deletions
diff --git a/drivers/net/mlx4/mcg.c b/drivers/net/mlx4/mcg.c
index c4f88b7ef7b6..79cf42db2ea9 100644
--- a/drivers/net/mlx4/mcg.c
+++ b/drivers/net/mlx4/mcg.c
@@ -95,7 +95,8 @@ static int mlx4_MGID_HASH(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox
* entry in hash chain and *mgm holds end of hash chain.
*/
static int find_mgm(struct mlx4_dev *dev,
- u8 *gid, struct mlx4_cmd_mailbox *mgm_mailbox,
+ u8 *gid, enum mlx4_protocol protocol,
+ struct mlx4_cmd_mailbox *mgm_mailbox,
u16 *hash, int *prev, int *index)
{
struct mlx4_cmd_mailbox *mailbox;
@@ -134,7 +135,8 @@ static int find_mgm(struct mlx4_dev *dev,
return err;
}
- if (!memcmp(mgm->gid, gid, 16))
+ if (!memcmp(mgm->gid, gid, 16) &&
+ be32_to_cpu(mgm->members_count) >> 30 == protocol)
return err;
*prev = *index;
@@ -146,7 +148,7 @@ static int find_mgm(struct mlx4_dev *dev,
}
int mlx4_multicast_attach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
- int block_mcast_loopback)
+ int block_mcast_loopback, enum mlx4_protocol protocol)
{
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_cmd_mailbox *mailbox;
@@ -165,7 +167,7 @@ int mlx4_multicast_attach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
mutex_lock(&priv->mcg_table.mutex);
- err = find_mgm(dev, gid, mailbox, &hash, &prev, &index);
+ err = find_mgm(dev, gid, protocol, mailbox, &hash, &prev, &index);
if (err)
goto out;
@@ -187,7 +189,7 @@ int mlx4_multicast_attach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
memcpy(mgm->gid, gid, 16);
}
- members_count = be32_to_cpu(mgm->members_count);
+ members_count = be32_to_cpu(mgm->members_count) & 0xffffff;
if (members_count == MLX4_QP_PER_MGM) {
mlx4_err(dev, "MGM at index %x is full.\n", index);
err = -ENOMEM;
@@ -207,7 +209,7 @@ int mlx4_multicast_attach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
else
mgm->qp[members_count++] = cpu_to_be32(qp->qpn & MGM_QPN_MASK);
- mgm->members_count = cpu_to_be32(members_count);
+ mgm->members_count = cpu_to_be32(members_count | (u32) protocol << 30);
err = mlx4_WRITE_MCG(dev, index, mailbox);
if (err)
@@ -242,7 +244,8 @@ out:
}
EXPORT_SYMBOL_GPL(mlx4_multicast_attach);
-int mlx4_multicast_detach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16])
+int mlx4_multicast_detach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
+ enum mlx4_protocol protocol)
{
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_cmd_mailbox *mailbox;
@@ -260,7 +263,7 @@ int mlx4_multicast_detach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16])
mutex_lock(&priv->mcg_table.mutex);
- err = find_mgm(dev, gid, mailbox, &hash, &prev, &index);
+ err = find_mgm(dev, gid, protocol, mailbox, &hash, &prev, &index);
if (err)
goto out;
@@ -270,7 +273,7 @@ int mlx4_multicast_detach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16])
goto out;
}
- members_count = be32_to_cpu(mgm->members_count);
+ members_count = be32_to_cpu(mgm->members_count) & 0xffffff;
for (loc = -1, i = 0; i < members_count; ++i)
if ((be32_to_cpu(mgm->qp[i]) & MGM_QPN_MASK) == qp->qpn)
loc = i;
@@ -282,7 +285,7 @@ int mlx4_multicast_detach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16])
}
- mgm->members_count = cpu_to_be32(--members_count);
+ mgm->members_count = cpu_to_be32(--members_count | (u32) protocol << 30);
mgm->qp[loc] = mgm->qp[i - 1];
mgm->qp[i - 1] = 0;