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Message-ID: <4AF19E23.9030005@mellanox.co.il>
Date: Wed, 04 Nov 2009 17:30:43 +0200
From: Yevgeny Petrilin <yevgenyp@...lanox.co.il>
To: rdreier@...co.com
CC: linux-rdma@...r.kernel.org, netdev@...r.kernel.org,
liranl@...lanox.co.il, tziporet@...lanox.co.il,
yevgenyp@...lanox.co.il
Subject: [PATCH 06/25] mlx4_core: slave multicast support
Multicast table processing requires multiple related commands.
To keep things simple, low-level multicast handling is done only by the master;
a new virtual command is added to allow slaves to attach/detach QPs to mulitcast
groups at a higher abstraction level.
Signed-off-by: Liran Liss <liranl@...lanox.co.il>
---
drivers/net/mlx4/cmd.c | 1 +
drivers/net/mlx4/mcg.c | 45 +++++++++++++++++++++++++++++++++++++++++++++
drivers/net/mlx4/mlx4.h | 4 ++++
include/linux/mlx4/cmd.h | 1 +
4 files changed, 51 insertions(+), 0 deletions(-)
diff --git a/drivers/net/mlx4/cmd.c b/drivers/net/mlx4/cmd.c
index b1701d2..dd23aba 100644
--- a/drivers/net/mlx4/cmd.c
+++ b/drivers/net/mlx4/cmd.c
@@ -565,6 +565,7 @@ static struct mlx4_cmd_info {
{MLX4_CMD_MAD_IFC, 1, 1, 0, NULL, NULL}, /* need verifier */
/* Native multicast commands are not available for guests */
+ {MLX4_CMD_MCAST_ATTACH, 1, 0, 0, NULL, mlx4_MCAST_wrapper},
{MLX4_CMD_DIAG_RPRT, 0, 1, 0, NULL, NULL}, /* need verifier */
/* Ethernet specific commands */
diff --git a/drivers/net/mlx4/mcg.c b/drivers/net/mlx4/mcg.c
index 5ccbce9..96f09ed 100644
--- a/drivers/net/mlx4/mcg.c
+++ b/drivers/net/mlx4/mcg.c
@@ -146,6 +146,45 @@ static int find_mgm(struct mlx4_dev *dev,
return err;
}
+int mlx4_MCAST_wrapper(struct mlx4_dev *dev, int slave, struct mlx4_vhcr *vhcr,
+ struct mlx4_cmd_mailbox *inbox,
+ struct mlx4_cmd_mailbox *outbox)
+{
+ struct mlx4_qp qp; /* dummy for calling attach/detach */
+
+ qp.qpn = vhcr->in_modifier & 0xffffff;
+ if (vhcr->op_modifier)
+ return mlx4_multicast_attach(dev, &qp, inbox->buf, vhcr->in_modifier >> 31);
+ else
+ return mlx4_multicast_detach(dev, &qp, inbox->buf);
+}
+
+static int mlx4_MCAST(struct mlx4_dev *dev, struct mlx4_qp *qp,
+ u8 gid[16], u8 attach,
+ u8 block_loopback)
+{
+ struct mlx4_cmd_mailbox *mailbox;
+ int err;
+ int qpn;
+
+ if (!mlx4_is_slave(dev))
+ return -EBADF;
+
+ mailbox = mlx4_alloc_cmd_mailbox(dev);
+ if (IS_ERR(mailbox))
+ return PTR_ERR(mailbox);
+
+ memcpy(mailbox->buf, gid, 16);
+ qpn = qp->qpn;
+ if (attach && block_loopback)
+ qpn |= (1 << 31);
+
+ err = mlx4_cmd(dev, mailbox->dma, qpn, attach, MLX4_CMD_MCAST_ATTACH,
+ MLX4_CMD_TIME_CLASS_A);
+ mlx4_free_cmd_mailbox(dev, mailbox);
+ return err;
+}
+
int mlx4_multicast_attach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
int block_mcast_loopback)
{
@@ -159,6 +198,9 @@ int mlx4_multicast_attach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
int i;
int err;
+ if (mlx4_is_slave(dev))
+ return mlx4_MCAST(dev, qp, gid, 1, block_mcast_loopback);
+
mailbox = mlx4_alloc_cmd_mailbox(dev);
if (IS_ERR(mailbox))
return PTR_ERR(mailbox);
@@ -254,6 +296,9 @@ int mlx4_multicast_detach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16])
int i, loc;
int err;
+ if (mlx4_is_slave(dev))
+ return mlx4_MCAST(dev, qp, gid, 0, 0);
+
mailbox = mlx4_alloc_cmd_mailbox(dev);
if (IS_ERR(mailbox))
return PTR_ERR(mailbox);
diff --git a/drivers/net/mlx4/mlx4.h b/drivers/net/mlx4/mlx4.h
index 91f1215..fafa293 100644
--- a/drivers/net/mlx4/mlx4.h
+++ b/drivers/net/mlx4/mlx4.h
@@ -507,4 +507,8 @@ void mlx4_init_vlan_table(struct mlx4_dev *dev, struct mlx4_vlan_table *table);
int mlx4_SET_PORT(struct mlx4_dev *dev, u8 port);
int mlx4_get_port_ib_caps(struct mlx4_dev *dev, u8 port, __be32 *caps);
+int mlx4_MCAST_wrapper(struct mlx4_dev *dev, int slave, struct mlx4_vhcr *vhcr,
+ struct mlx4_cmd_mailbox *inbox,
+ struct mlx4_cmd_mailbox *outbox);
+
#endif /* MLX4_H */
diff --git a/include/linux/mlx4/cmd.h b/include/linux/mlx4/cmd.h
index dceb93f..8265843 100644
--- a/include/linux/mlx4/cmd.h
+++ b/include/linux/mlx4/cmd.h
@@ -123,6 +123,7 @@ enum {
MLX4_CMD_ALLOC_RES = 0x50,
MLX4_CMD_FREE_RES = 0x51,
MLX4_CMD_GET_EVENT = 0x52,
+ MLX4_CMD_MCAST_ATTACH = 0x54,
/* debug commands */
MLX4_CMD_QUERY_DEBUG_MSG = 0x2a,
--
1.6.1.3
--
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