diff options
| author |   Avinash Repaka <avinash.repaka@oracle.com> | 2016-03-01 15:20:54 -0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2016-03-02 14:13:19 -0500 |
| commit | 1659185fb4d0025835eb2058a141f0746c5cab00 (patch) | |
| tree | b4cf4a644ba1fc2ba50cd478b1fa896bc61b1b2d /net/rds/ib_rdma.c | |
| parent | RDS: IB: allocate extra space on queues for FRMR support (diff) | |
| download | linux-dev-1659185fb4d0025835eb2058a141f0746c5cab00.tar.xz linux-dev-1659185fb4d0025835eb2058a141f0746c5cab00.zip | |
RDS: IB: Support Fastreg MR (FRMR) memory registration mode
Fastreg MR(FRMR) is another method with which one can
register memory to HCA. Some of the newer HCAs supports only fastreg
mr mode, so we need to add support for it to have RDS functional
on them.
Signed-off-by: Santosh Shilimkar <ssantosh@kernel.org>
Signed-off-by: Avinash Repaka <avinash.repaka@oracle.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/rds/ib_rdma.c')
| -rw-r--r-- | net/rds/ib_rdma.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/net/rds/ib_rdma.c b/net/rds/ib_rdma.c index ec7ea32265c0..f7164ac1ffc1 100644 --- a/net/rds/ib_rdma.c +++ b/net/rds/ib_rdma.c @@ -397,7 +397,10 @@ int rds_ib_flush_mr_pool(struct rds_ib_mr_pool *pool, if (list_empty(&unmap_list)) goto out; - rds_ib_unreg_fmr(&unmap_list, &nfreed, &unpinned, free_goal); + if (pool->use_fastreg) + rds_ib_unreg_frmr(&unmap_list, &nfreed, &unpinned, free_goal); + else + rds_ib_unreg_fmr(&unmap_list, &nfreed, &unpinned, free_goal); if (!list_empty(&unmap_list)) { /* we have to make sure that none of the things we're about @@ -489,7 +492,10 @@ void rds_ib_free_mr(void *trans_private, int invalidate) rdsdebug("RDS/IB: free_mr nents %u\n", ibmr->sg_len); /* Return it to the pool's free list */ - rds_ib_free_fmr_list(ibmr); + if (rds_ibdev->use_fastreg) + rds_ib_free_frmr_list(ibmr); + else + rds_ib_free_fmr_list(ibmr); atomic_add(ibmr->sg_len, &pool->free_pinned); atomic_inc(&pool->dirty_count); @@ -534,6 +540,7 @@ void *rds_ib_get_mr(struct scatterlist *sg, unsigned long nents, { struct rds_ib_device *rds_ibdev; struct rds_ib_mr *ibmr = NULL; + struct rds_ib_connection *ic = rs->rs_conn->c_transport_data; int ret; rds_ibdev = rds_ib_get_device(rs->rs_bound_addr); @@ -547,7 +554,10 @@ void *rds_ib_get_mr(struct scatterlist *sg, unsigned long nents, goto out; } - ibmr = rds_ib_reg_fmr(rds_ibdev, sg, nents, key_ret); + if (rds_ibdev->use_fastreg) + ibmr = rds_ib_reg_frmr(rds_ibdev, ic, sg, nents, key_ret); + else + ibmr = rds_ib_reg_fmr(rds_ibdev, sg, nents, key_ret); if (ibmr) rds_ibdev = NULL; @@ -601,6 +611,7 @@ struct rds_ib_mr_pool *rds_ib_create_mr_pool(struct rds_ib_device *rds_ibdev, pool->fmr_attr.max_maps = rds_ibdev->fmr_max_remaps; pool->fmr_attr.page_shift = PAGE_SHIFT; pool->max_items_soft = rds_ibdev->max_mrs * 3 / 4; + pool->use_fastreg = rds_ibdev->use_fastreg; return pool; } |