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authorMax Gurtovoy <maxg@mellanox.com>2019-06-11 18:52:43 +0300
committerJason Gunthorpe <jgg@mellanox.com>2019-06-24 11:49:26 -0300
commit62e3c379d4d713dbcb70adc7c65443fd8722b33f (patch)
tree86a788bd7e52cd4ecb9120bd405b4f4856b8786a /include/rdma
parentRDMA/mlx5: Implement mlx5_ib_map_mr_sg_pi and mlx5_ib_alloc_mr_integrity (diff)
downloadlinux-dev-62e3c379d4d713dbcb70adc7c65443fd8722b33f.tar.xz
linux-dev-62e3c379d4d713dbcb70adc7c65443fd8722b33f.zip
RDMA/mlx5: Add attr for max number page list length for PI operation
PI offload (protection information) is a feature that each RDMA provider can implement differently. Thus, introduce new device attribute to define the maximal length of the page list for PI fast registration operation. For example, mlx5 driver uses a single internal MR to map both data and protection SGL's, so it's equal to max_fast_reg_page_list_len / 2. Signed-off-by: Max Gurtovoy <maxg@mellanox.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to '')
-rw-r--r--include/rdma/ib_verbs.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 995b217a1940..9169e798334f 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -390,6 +390,7 @@ struct ib_device_attr {
int max_srq_wr;
int max_srq_sge;
unsigned int max_fast_reg_page_list_len;
+ unsigned int max_pi_fast_reg_page_list_len;
u16 max_pkeys;
u8 local_ca_ack_delay;
int sig_prot_cap;