d70bf4f7a9
SMCD Version 2 allows to propose up to 8 additional ISM devices offered to the peer as candidates for SMCD communication. This patch covers determination of the ISM devices to be proposed. ISM devices without PNETID are preferred, since ISM devices with PNETID are a V1 leftover and will disappear over the time. Signed-off-by: Ursula Braun <ubraun@linux.ibm.com> Signed-off-by: Karsten Graul <kgraul@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
71 lines
1.7 KiB
C
71 lines
1.7 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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#include <net/smc.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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struct smc_init_info;
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struct smc_link_group;
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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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struct smc_pnetids_ndev { /* list of pnetids for net devices in UP state*/
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struct list_head list;
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rwlock_t lock;
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};
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struct smc_pnetids_ndev_entry {
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struct list_head list;
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u8 pnetid[SMC_MAX_PNETID_LEN];
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refcount_t refcnt;
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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, struct smc_init_info *ini);
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void smc_pnet_find_ism_resource(struct sock *sk, struct smc_init_info *ini);
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int smc_pnetid_by_table_ib(struct smc_ib_device *smcibdev, u8 ib_port);
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int smc_pnetid_by_table_smcd(struct smcd_dev *smcd);
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void smc_pnet_find_alt_roce(struct smc_link_group *lgr,
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struct smc_init_info *ini,
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struct smc_ib_device *known_dev);
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bool smc_pnet_is_ndev_pnetid(struct net *net, u8 *pnetid);
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bool smc_pnet_is_pnetid_set(u8 *pnetid);
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#endif
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