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RDMA/rw: Introduce rdma_rw_inv_key helper 

This is a preparation for adding new signature API to the rw-API.

Signed-off-by: Israel Rukshin <israelr@mellanox.com>
Suggested-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Israel Rukshin 2019-06-11 18:52:52 +03:00 committed by Jason Gunthorpe
parent 185eddc457
commit 6cb2d5b105
1 changed files with 17 additions and 8 deletions
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25
drivers/infiniband/core/rw.c
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@ -65,6 +65,22 @@ static inline u32 rdma_rw_fr_page_list_len(struct ib_device *dev)
return min_t(u32, dev->attrs.max_fast_reg_page_list_len, 256);
}
static inline int rdma_rw_inv_key(struct rdma_rw_reg_ctx *reg)
{
int count = 0;
if (reg->mr->need_inval) {
reg->inv_wr.opcode = IB_WR_LOCAL_INV;
reg->inv_wr.ex.invalidate_rkey = reg->mr->lkey;
reg->inv_wr.next = &reg->reg_wr.wr;
count++;
} else {
reg->inv_wr.next = NULL;
}
return count;
}
/* Caller must have zero-initialized *reg. */
static int rdma_rw_init_one_mr(struct ib_qp *qp, u8 port_num,
struct rdma_rw_reg_ctx *reg, struct scatterlist *sg,
@ -78,14 +94,7 @@ static int rdma_rw_init_one_mr(struct ib_qp *qp, u8 port_num,
if (!reg->mr)
return -EAGAIN;
if (reg->mr->need_inval) {
reg->inv_wr.opcode = IB_WR_LOCAL_INV;
reg->inv_wr.ex.invalidate_rkey = reg->mr->lkey;
reg->inv_wr.next = &reg->reg_wr.wr;
count++;
} else {
reg->inv_wr.next = NULL;
}
count += rdma_rw_inv_key(reg);
ret = ib_map_mr_sg(reg->mr, sg, nents, &offset, PAGE_SIZE);
if (ret < 0 || ret < nents) {