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net/smc: introduce list of pnetids for Ethernet devices

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SMCD version 2 allows usage of ISM devices with hardware PNETID
only, if an Ethernet net_device exists with the same hardware PNETID.
This requires to maintain a list of pnetids belonging to
Ethernet net_devices, which is covered by this patch.

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>
This commit is contained in:
Ursula Braun
2020-09-26 12:44:26 +02:00
committed by David S. Miller
parent 8caaccf521
commit e888a2e833
3 changed files with 153 additions and 7 deletions
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14
net/smc/smc_pnet.h
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@@ -12,6 +12,8 @@
#ifndef _SMC_PNET_H
#define _SMC_PNET_H
#include <net/smc.h>
#if IS_ENABLED(CONFIG_HAVE_PNETID)
#include <asm/pnet.h>
#endif
@@ -31,6 +33,17 @@ struct smc_pnettable {
struct list_head pnetlist;
};
struct smc_pnetids_ndev { /* list of pnetids for net devices in UP state*/
struct list_head list;
rwlock_t lock;
};
struct smc_pnetids_ndev_entry {
struct list_head list;
u8 pnetid[SMC_MAX_PNETID_LEN];
refcount_t refcnt;
};
static inline int smc_pnetid_by_dev_port(struct device *dev,
unsigned short port, u8 *pnetid)
{
@@ -52,4 +65,5 @@ int smc_pnetid_by_table_smcd(struct smcd_dev *smcd);
void smc_pnet_find_alt_roce(struct smc_link_group *lgr,
struct smc_init_info *ini,
struct smc_ib_device *known_dev);
bool smc_pnet_is_ndev_pnetid(struct net *net, u8 *pnetid);
#endif