mirror of
https://github.com/torvalds/linux.git
synced 2024-11-23 04:31:50 +00:00
0afff91c6f
s390 hardware supports the definition of a so-call Physical NETwork IDentifier (short PNETID) per network device port. These PNETIDS can be used to identify network devices that are attached to the same physical network (broadcast domain). On s390 try to use the PNETID of the ethernet device port used for initial connecting, and derive the IB device port used for SMC RDMA traffic. On platforms without PNETID support fall back to the existing solution of a configured pnet table. Signed-off-by: Ursula Braun <ubraun@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
38 lines
800 B
C
38 lines
800 B
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Shared Memory Communications over RDMA (SMC-R) and RoCE
|
|
*
|
|
* PNET table queries
|
|
*
|
|
* Copyright IBM Corp. 2016
|
|
*
|
|
* Author(s): Thomas Richter <tmricht@linux.vnet.ibm.com>
|
|
*/
|
|
|
|
#ifndef _SMC_PNET_H
|
|
#define _SMC_PNET_H
|
|
|
|
#if IS_ENABLED(CONFIG_HAVE_PNETID)
|
|
#include <asm/pnet.h>
|
|
#endif
|
|
|
|
struct smc_ib_device;
|
|
|
|
static inline int smc_pnetid_by_dev_port(struct device *dev,
|
|
unsigned short port, u8 *pnetid)
|
|
{
|
|
#if IS_ENABLED(CONFIG_HAVE_PNETID)
|
|
return pnet_id_by_dev_port(dev, port, pnetid);
|
|
#else
|
|
return -ENOENT;
|
|
#endif
|
|
}
|
|
|
|
int smc_pnet_init(void) __init;
|
|
void smc_pnet_exit(void);
|
|
int smc_pnet_remove_by_ibdev(struct smc_ib_device *ibdev);
|
|
void smc_pnet_find_roce_resource(struct sock *sk,
|
|
struct smc_ib_device **smcibdev, u8 *ibport);
|
|
|
|
#endif
|