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| author | Ursula Braun <ubraun@linux.ibm.com> | 2020-09-26 12:44:24 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-09-28 15:19:02 -0700 |
| commit | 201091ebb2a161a0e10aab36186690b332941f6a (patch) | |
| tree | 39b87ea12d877c20b462137ad831b50bd4591236 /net/smc | |
| parent | 3fc6493761372c5f6ff84d407c58948b8f2ee360 (diff) | |
| download | linux-201091ebb2a161a0e10aab36186690b332941f6a.tar.gz linux-201091ebb2a161a0e10aab36186690b332941f6a.tar.bz2 linux-201091ebb2a161a0e10aab36186690b332941f6a.zip | |
net/smc: introduce System Enterprise ID (SEID)
SMCD version 2 defines a System Enterprise ID (short SEID).
This patch contains the SEID creation and adds the callback to
retrieve the created SEID.
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>
Diffstat (limited to 'net/smc')
| -rw-r--r-- | net/smc/af_smc.c | 2 | ||||
| -rw-r--r-- | net/smc/smc_ism.c | 21 | ||||
| -rw-r--r-- | net/smc/smc_ism.h | 7 |
3 files changed, 28 insertions, 2 deletions
diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c index dc0049b25bd9..8c1cde36adb8 100644 --- a/net/smc/af_smc.c +++ b/net/smc/af_smc.c @@ -2137,6 +2137,8 @@ static int __init smc_init(void) if (rc) return rc; + smc_ism_init(); + rc = smc_pnet_init(); if (rc) goto out_pernet_subsys; diff --git a/net/smc/smc_ism.c b/net/smc/smc_ism.c index 998c525de785..63c3dd5578bf 100644 --- a/net/smc/smc_ism.c +++ b/net/smc/smc_ism.c @@ -21,7 +21,9 @@ struct smcd_dev_list smcd_dev_list = { .mutex = __MUTEX_INITIALIZER(smcd_dev_list.mutex) }; -/* Test if an ISM communication is possible. */ +bool smc_ism_v2_capable; + +/* Test if an ISM communication is possible - same CPC */ int smc_ism_cantalk(u64 peer_gid, unsigned short vlan_id, struct smcd_dev *smcd) { return smcd->ops->query_remote_gid(smcd, peer_gid, vlan_id ? 1 : 0, @@ -39,6 +41,11 @@ int smc_ism_write(struct smcd_dev *smcd, const struct smc_ism_position *pos, return rc < 0 ? rc : 0; } +void smc_ism_get_system_eid(struct smcd_dev *smcd, u8 **eid) +{ + smcd->ops->get_system_eid(smcd, eid); +} + /* Set a connection using this DMBE. */ void smc_ism_set_conn(struct smc_connection *conn) { @@ -319,6 +326,13 @@ EXPORT_SYMBOL_GPL(smcd_alloc_dev); int smcd_register_dev(struct smcd_dev *smcd) { mutex_lock(&smcd_dev_list.mutex); + if (list_empty(&smcd_dev_list.list)) { + u8 *system_eid = NULL; + + smc_ism_get_system_eid(smcd, &system_eid); + if ((*system_eid) + 24 != '0' || (*system_eid) + 28 != '0') + smc_ism_v2_capable = true; + } list_add_tail(&smcd->list, &smcd_dev_list.list); mutex_unlock(&smcd_dev_list.mutex); @@ -399,3 +413,8 @@ void smcd_handle_irq(struct smcd_dev *smcd, unsigned int dmbno) spin_unlock_irqrestore(&smcd->lock, flags); } EXPORT_SYMBOL_GPL(smcd_handle_irq); + +void __init smc_ism_init(void) +{ + smc_ism_v2_capable = false; +} diff --git a/net/smc/smc_ism.h b/net/smc/smc_ism.h index 81cc4537efd3..816d86361e1a 100644 --- a/net/smc/smc_ism.h +++ b/net/smc/smc_ism.h @@ -19,7 +19,10 @@ struct smcd_dev_list { /* List of SMCD devices */ struct mutex mutex; /* Protects list of devices */ }; -extern struct smcd_dev_list smcd_dev_list; /* list of smcd devices */ +extern struct smcd_dev_list smcd_dev_list; /* list of smcd devices */ +extern bool smc_ism_v2_capable; /* HW supports ISM V2 and thus + * System EID is defined + */ struct smc_ism_vlanid { /* VLAN id set on ISM device */ struct list_head list; @@ -47,4 +50,6 @@ int smc_ism_unregister_dmb(struct smcd_dev *dev, struct smc_buf_desc *dmb_desc); int smc_ism_write(struct smcd_dev *dev, const struct smc_ism_position *pos, void *data, size_t len); int smc_ism_signal_shutdown(struct smc_link_group *lgr); +void smc_ism_get_system_eid(struct smcd_dev *dev, u8 **eid); +void smc_ism_init(void); #endif |