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| author | Eli Cohen <eli@dev.mellanox.co.il> | 2010-08-26 17:19:22 +0300 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2010-10-25 10:20:39 -0700 |
| commit | 4c3eb3ca13966508bcb64f39dcdef48be22f1731 (patch) | |
| tree | 67fde746d256e38421c682501974868971507680 /drivers/infiniband/hw/mlx4/ah.c | |
| parent | af7bd463761c6abd8ca8d831f9cc0ac19f3b7d4b (diff) | |
| download | op-kernel-dev-4c3eb3ca13966508bcb64f39dcdef48be22f1731.zip op-kernel-dev-4c3eb3ca13966508bcb64f39dcdef48be22f1731.tar.gz | |
IB/mlx4: Add VLAN support for IBoE
This patch allows IBoE traffic to be encapsulated in 802.1Q tagged
VLAN frames. The VLAN tag is encoded in the GID and derived from it
by a simple computation.
The netdev notifier callback is modified to catch VLAN device
addition/removal and the port's GID table is updated to reflect the
change, so that for each netdevice there is an entry in the GID table.
When the port's GID table is exhausted, GID entries will not be added.
Only children of the main interfaces can add to the GID table; if a
VLAN interface is added on another VLAN interface (e.g. "vconfig add
eth2.6 8"), then that interfaces will not add an entry to the GID
table.
Signed-off-by: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/mlx4/ah.c')
| -rw-r--r-- | drivers/infiniband/hw/mlx4/ah.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mlx4/ah.c b/drivers/infiniband/hw/mlx4/ah.c index 3bf3544..4b8f9c4 100644 --- a/drivers/infiniband/hw/mlx4/ah.c +++ b/drivers/infiniband/hw/mlx4/ah.c @@ -31,6 +31,7 @@ */ #include <rdma/ib_addr.h> +#include <rdma/ib_cache.h> #include <linux/slab.h> #include <linux/inet.h> @@ -91,17 +92,26 @@ static struct ib_ah *create_iboe_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr { struct mlx4_ib_dev *ibdev = to_mdev(pd->device); struct mlx4_dev *dev = ibdev->dev; + union ib_gid sgid; u8 mac[6]; int err; int is_mcast; + u16 vlan_tag; err = mlx4_ib_resolve_grh(ibdev, ah_attr, mac, &is_mcast, ah_attr->port_num); if (err) return ERR_PTR(err); memcpy(ah->av.eth.mac, mac, 6); + err = ib_get_cached_gid(pd->device, ah_attr->port_num, ah_attr->grh.sgid_index, &sgid); + if (err) + return ERR_PTR(err); + vlan_tag = rdma_get_vlan_id(&sgid); + if (vlan_tag < 0x1000) + vlan_tag |= (ah_attr->sl & 7) << 13; ah->av.eth.port_pd = cpu_to_be32(to_mpd(pd)->pdn | (ah_attr->port_num << 24)); ah->av.eth.gid_index = ah_attr->grh.sgid_index; + ah->av.eth.vlan = cpu_to_be16(vlan_tag); if (ah_attr->static_rate) { ah->av.eth.stat_rate = ah_attr->static_rate + MLX4_STAT_RATE_OFFSET; while (ah->av.eth.stat_rate > IB_RATE_2_5_GBPS + MLX4_STAT_RATE_OFFSET && |
