Commit 792a7c1f authored by Jason Gunthorpe's avatar Jason Gunthorpe
Browse files

RDMA/cm: Add accessors for CM_REQ transport_type 

Access the two fields through wrappers, like all other fields, to make it
clearer what is happening.

Link: https://lore.kernel.org/r/20200116170037.30109-2-jgg@ziepe.ca


Tested-by: default avatarLeon Romanovsky <leonro@mellanox.com>
Reviewed-by: default avatarLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@mellanox.com>
parent 4bbd4923

drivers/infiniband/core/cm_msgs.h

+29 −12
Original line number Diff line number Diff line
@@ -124,14 +124,37 @@ static inline void cm_req_set_remote_resp_timeout(struct cm_req_msg *req_msg, 
					  0xFFFFFF07));

}



static inline u8 cm_req_get_transport_type(struct cm_req_msg *req_msg)

{

	return (u8) ((be32_to_cpu(req_msg->offset40) & 0x06) >> 1);

}



static inline void cm_req_set_transport_type(struct cm_req_msg *req_msg, u8 val)

{

	req_msg->offset40 =

		cpu_to_be32((be32_to_cpu(req_msg->offset40) & 0xFFFFFFF9) |

		(val << 1));

}



static inline u8 cm_req_get_transport_type_ex(struct cm_req_msg *req_msg)

{

	return req_msg->offset51 & 0x7;

}



static inline void cm_req_set_transport_type_ex(struct cm_req_msg *req_msg,

						u8 val)

{

	req_msg->offset51 = (req_msg->offset51 & 0xF8) | val;

}



static inline enum ib_qp_type cm_req_get_qp_type(struct cm_req_msg *req_msg)

{

	u8 transport_type = (u8) (be32_to_cpu(req_msg->offset40) & 0x06) >> 1;

	u8 transport_type = cm_req_get_transport_type(req_msg);

	switch(transport_type) {

	case 0: return IB_QPT_RC;

	case 1: return IB_QPT_UC;

	case 3:

		switch (req_msg->offset51 & 0x7) {

		switch (cm_req_get_transport_type_ex(req_msg)) {

		case 1: return IB_QPT_XRC_TGT;

		default: return 0;

		}
@@ -144,20 +167,14 @@ static inline void cm_req_set_qp_type(struct cm_req_msg *req_msg, 
{

	switch(qp_type) {

	case IB_QPT_UC:

		req_msg->offset40 = cpu_to_be32((be32_to_cpu(

						  req_msg->offset40) &

						   0xFFFFFFF9) | 0x2);

		cm_req_set_transport_type(req_msg, 1);

		break;

	case IB_QPT_XRC_INI:

		req_msg->offset40 = cpu_to_be32((be32_to_cpu(

						 req_msg->offset40) &

						   0xFFFFFFF9) | 0x6);

		req_msg->offset51 = (req_msg->offset51 & 0xF8) | 1;

		cm_req_set_transport_type(req_msg, 3);

		cm_req_set_transport_type_ex(req_msg, 1);

		break;

	default:

		req_msg->offset40 = cpu_to_be32(be32_to_cpu(

						 req_msg->offset40) &

						  0xFFFFFFF9);

		cm_req_set_transport_type(req_msg, 0);

	}

}

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