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Commit 6cb2d5b1 authored by Israel Rukshin's avatar Israel Rukshin Committed by Jason Gunthorpe
Browse files

RDMA/rw: Introduce rdma_rw_inv_key helper 



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

Signed-off-by: default avatarIsrael Rukshin <israelr@mellanox.com>
Suggested-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarMax Gurtovoy <maxg@mellanox.com>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarJason Gunthorpe <jgg@mellanox.com>
parent 185eddc4

drivers/infiniband/core/rw.c

+17 −8
Original line number Diff line number Diff line
@@ -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) {