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IB/mlx4: Add support for IBoE

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Add support for IBoE to mlx4_ib.  The bulk of the code is handling the
new address vector fields; mlx4 needs the MAC address of a remote node
to include it in a WQE (for datagrams) or in the QP context (for
connected QPs).  Address resolution is done by assuming all unicast
GIDs are either link-local IPv6 addresses.

Multicast group attach/detach needs to update the NIC's multicast
filters; but since attaching a QP to a multicast group can be done
before the QP is bound to a port, for IBoE we need to keep track of
all multicast groups that a QP is attached too before it transitions
from INIT to RTR (since it does not have a port in the INIT state).

Signed-off-by: Eli Cohen <eli@mellanox.co.il>

[ Many things cleaned up and otherwise monkeyed with; hope I didn't
  introduce too many bugs.  - Roland ]

Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Eli Cohen
2010-10-24 21:08:52 -07:00
committed by Roland Dreier
parent 7ac870ed7d
commit fa417f7b52
6 changed files with 716 additions and 110 deletions
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27
include/linux/mlx4/device.h
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@@ -374,6 +374,27 @@ struct mlx4_av {
u8 dgid[16];
};
struct mlx4_eth_av {
__be32 port_pd;
u8 reserved1;
u8 smac_idx;
u16 reserved2;
u8 reserved3;
u8 gid_index;
u8 stat_rate;
u8 hop_limit;
__be32 sl_tclass_flowlabel;
u8 dgid[16];
u32 reserved4[2];
__be16 vlan;
u8 mac[6];
};
union mlx4_ext_av {
struct mlx4_av ib;
struct mlx4_eth_av eth;
};
struct mlx4_dev {
struct pci_dev *pdev;
unsigned long flags;
@@ -402,6 +423,12 @@ struct mlx4_init_port_param {
if (((type) == MLX4_PORT_TYPE_IB ? (dev)->caps.port_mask : \
~(dev)->caps.port_mask) & 1 << ((port) - 1))
#define mlx4_foreach_ib_transport_port(port, dev) \
for ((port) = 1; (port) <= (dev)->caps.num_ports; (port)++) \
if (((dev)->caps.port_mask & 1 << ((port) - 1)) || \
((dev)->caps.flags & MLX4_DEV_CAP_FLAG_IBOE))
int mlx4_buf_alloc(struct mlx4_dev *dev, int size, int max_direct,
struct mlx4_buf *buf);
void mlx4_buf_free(struct mlx4_dev *dev, int size, struct mlx4_buf *buf);