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RDMA: Introduce and use GID attr helper to read RoCE L2 fields

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Instead of RoCE drivers figuring out vlan, smac fields while working on
QP/AH, provide a helper routine to read the L2 fields such as vlan_id and
source mac address.

This moves logic from mlx5 driver to core for wider usage for RoCE ports.

This is a preparation patch to allow detaching netdev in subsequent patch.

Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Parav Pandit 2019-05-02 10:48:03 +03:00 • committed by Jason Gunthorpe
parent 8f97486024
commit a70c07397f
12 changed files with 118 additions and 67 deletions
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3
include/rdma/ib_cache.h
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@ -54,6 +54,9 @@ const struct ib_gid_attr *rdma_find_gid_by_filter(
void *),
void *context);
int rdma_read_gid_l2_fields(const struct ib_gid_attr *attr,
u16 *vlan_id, u8 *smac);
/**
* ib_get_cached_pkey - Returns a cached PKey table entry
* @device: The device to query.