diff options
| author | Alexandra Winter <wintera@linux.ibm.com> | 2025-09-18 13:04:57 +0200 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2025-09-23 11:13:22 +0200 |
| commit | 92a0f7bb081dde6e88368816b8ba51352ddabb1d (patch) | |
| tree | 090f7e99694399afa6ded1d4475c90def0c84434 /net/smc | |
| parent | dibs: Local gid for dibs devices (diff) | |
| download | linux-92a0f7bb081dde6e88368816b8ba51352ddabb1d.tar.gz linux-92a0f7bb081dde6e88368816b8ba51352ddabb1d.zip | |
dibs: Move vlan support to dibs_dev_ops
It can be debated how much benefit definition of vlan ids for dibs devices
brings, as the dmbs are accessible only by a single peer anyhow. But ism
provides vlan support and smcd exploits it, so move it to dibs layer as an
optional feature.
smcd_loopback simply ignores all vlan settings, do the same in
dibs_loopback.
SMC-D and ISM have a method to use the invalid VLAN ID 1FFF
(ISM_RESERVED_VLANID), to indicate that both communication peers support
routable SMC-Dv2. Tolerate it in dibs, but move it to SMC only.
Signed-off-by: Alexandra Winter <wintera@linux.ibm.com>
Link: https://patch.msgid.link/20250918110500.1731261-12-wintera@linux.ibm.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'net/smc')
| -rw-r--r-- | net/smc/smc_ism.c | 14 | ||||
| -rw-r--r-- | net/smc/smc_loopback.c | 5 |
2 files changed, 9 insertions, 10 deletions
diff --git a/net/smc/smc_ism.c b/net/smc/smc_ism.c index 6a6e7c9641e8..5118441bed18 100644 --- a/net/smc/smc_ism.c +++ b/net/smc/smc_ism.c @@ -140,7 +140,7 @@ int smc_ism_get_vlan(struct smcd_dev *smcd, unsigned short vlanid) if (!vlanid) /* No valid vlan id */ return -EINVAL; - if (!smcd->ops->add_vlan_id) + if (!smcd->dibs->ops->add_vlan_id) return -EOPNOTSUPP; /* create new vlan entry, in case we need it */ @@ -163,7 +163,7 @@ int smc_ism_get_vlan(struct smcd_dev *smcd, unsigned short vlanid) /* no existing entry found. * add new entry to device; might fail, e.g., if HW limit reached */ - if (smcd->ops->add_vlan_id(smcd, vlanid)) { + if (smcd->dibs->ops->add_vlan_id(smcd->dibs, vlanid)) { kfree(new_vlan); rc = -EIO; goto out; @@ -187,7 +187,7 @@ int smc_ism_put_vlan(struct smcd_dev *smcd, unsigned short vlanid) if (!vlanid) /* No valid vlan id */ return -EINVAL; - if (!smcd->ops->del_vlan_id) + if (!smcd->dibs->ops->del_vlan_id) return -EOPNOTSUPP; spin_lock_irqsave(&smcd->lock, flags); @@ -205,7 +205,7 @@ int smc_ism_put_vlan(struct smcd_dev *smcd, unsigned short vlanid) } /* Found and the last reference just gone */ - if (smcd->ops->del_vlan_id(smcd, vlanid)) + if (smcd->dibs->ops->del_vlan_id(smcd->dibs, vlanid)) rc = -EIO; list_del(&vlan->list); kfree(vlan); @@ -539,8 +539,12 @@ static void smcd_register_dev(struct dibs_dev *dibs) if (smc_pnetid_by_dev_port(dibs->dev.parent, 0, smcd->pnetid)) smc_pnetid_by_table_smcd(smcd); - if (smc_ism_is_loopback(dibs) || smcd->ops->supports_v2()) + if (smc_ism_is_loopback(dibs) || + (dibs->ops->add_vlan_id && + !dibs->ops->add_vlan_id(dibs, ISM_RESERVED_VLANID))) { smc_ism_set_v2_capable(); + } + mutex_lock(&smcd_dev_list.mutex); /* sort list: * - devices without pnetid before devices with pnetid; diff --git a/net/smc/smc_loopback.c b/net/smc/smc_loopback.c index 454d9d6a6e8f..982a19430313 100644 --- a/net/smc/smc_loopback.c +++ b/net/smc/smc_loopback.c @@ -20,7 +20,6 @@ #include "smc_ism.h" #include "smc_loopback.h" -#define SMC_LO_V2_CAPABLE 0x1 /* loopback-ism acts as ISMv2 */ #define SMC_LO_SUPPORT_NOCOPY 0x1 #define SMC_DMA_ADDR_INVALID (~(dma_addr_t)0) @@ -242,10 +241,6 @@ static const struct smcd_ops lo_ops = { .support_dmb_nocopy = smc_lo_support_dmb_nocopy, .attach_dmb = smc_lo_attach_dmb, .detach_dmb = smc_lo_detach_dmb, - .add_vlan_id = NULL, - .del_vlan_id = NULL, - .set_vlan_required = NULL, - .reset_vlan_required = NULL, .signal_event = NULL, .move_data = smc_lo_move_data, }; |