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64e28b52c7
This patch adds namespace support to the pnet table code. Each network namespace gets its own pnet table. Infiniband and smcd device pnetids can only be modified in the initial namespace. In other namespaces they can still be used as if they were set by the underlying hardware. Signed-off-by: Hans Wippel <hwippel@linux.ibm.com> Signed-off-by: Ursula Braun <ubraun@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
52 lines
1.1 KiB
C
52 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Shared Memory Communications over RDMA (SMC-R) and RoCE
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*
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* PNET table queries
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*
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* Copyright IBM Corp. 2016
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*
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* Author(s): Thomas Richter <tmricht@linux.vnet.ibm.com>
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*/
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#ifndef _SMC_PNET_H
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#define _SMC_PNET_H
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#if IS_ENABLED(CONFIG_HAVE_PNETID)
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#include <asm/pnet.h>
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#endif
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struct smc_ib_device;
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struct smcd_dev;
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/**
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* struct smc_pnettable - SMC PNET table anchor
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* @lock: Lock for list action
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* @pnetlist: List of PNETIDs
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*/
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struct smc_pnettable {
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rwlock_t lock;
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struct list_head pnetlist;
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};
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static inline int smc_pnetid_by_dev_port(struct device *dev,
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unsigned short port, u8 *pnetid)
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{
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#if IS_ENABLED(CONFIG_HAVE_PNETID)
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return pnet_id_by_dev_port(dev, port, pnetid);
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#else
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return -ENOENT;
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#endif
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}
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int smc_pnet_init(void) __init;
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int smc_pnet_net_init(struct net *net);
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void smc_pnet_exit(void);
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void smc_pnet_net_exit(struct net *net);
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void smc_pnet_find_roce_resource(struct sock *sk,
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struct smc_ib_device **smcibdev, u8 *ibport,
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unsigned short vlan_id, u8 gid[]);
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void smc_pnet_find_ism_resource(struct sock *sk, struct smcd_dev **smcismdev);
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#endif
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