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-rw-r--r--drivers/s390/net/ism_drv.c162
-rw-r--r--include/linux/ism.h2
-rw-r--r--include/net/smc.h5
-rw-r--r--net/smc/smc_ism.c63
4 files changed, 143 insertions, 89 deletions
diff --git a/drivers/s390/net/ism_drv.c b/drivers/s390/net/ism_drv.c
index e6c810a96b24..73c8f42a22a7 100644
--- a/drivers/s390/net/ism_drv.c
+++ b/drivers/s390/net/ism_drv.c
@@ -289,11 +289,6 @@ static int ism_query_rgid(struct ism_dev *ism, u64 rgid, u32 vid_valid,
return ism_cmd(ism, &cmd);
}
-static int smcd_query_rgid(struct smcd_dev *smcd, u64 rgid, u32 vid_valid, u32 vid)
-{
- return ism_query_rgid(smcd->priv, rgid, vid_valid, vid);
-}
-
static void ism_free_dmb(struct ism_dev *ism, struct ism_dmb *dmb)
{
clear_bit(dmb->sba_idx, ism->sba_bitmap);
@@ -363,11 +358,6 @@ out:
}
EXPORT_SYMBOL_GPL(ism_register_dmb);
-static int smcd_register_dmb(struct smcd_dev *smcd, struct smcd_dmb *dmb)
-{
- return ism_register_dmb(smcd->priv, (struct ism_dmb *)dmb, NULL);
-}
-
int ism_unregister_dmb(struct ism_dev *ism, struct ism_dmb *dmb)
{
union ism_unreg_dmb cmd;
@@ -391,11 +381,6 @@ out:
}
EXPORT_SYMBOL_GPL(ism_unregister_dmb);
-static int smcd_unregister_dmb(struct smcd_dev *smcd, struct smcd_dmb *dmb)
-{
- return ism_unregister_dmb(smcd->priv, (struct ism_dmb *)dmb);
-}
-
static int ism_add_vlan_id(struct ism_dev *ism, u64 vlan_id)
{
union ism_set_vlan_id cmd;
@@ -409,11 +394,6 @@ static int ism_add_vlan_id(struct ism_dev *ism, u64 vlan_id)
return ism_cmd(ism, &cmd);
}
-static int smcd_add_vlan_id(struct smcd_dev *smcd, u64 vlan_id)
-{
- return ism_add_vlan_id(smcd->priv, vlan_id);
-}
-
static int ism_del_vlan_id(struct ism_dev *ism, u64 vlan_id)
{
union ism_set_vlan_id cmd;
@@ -427,25 +407,9 @@ static int ism_del_vlan_id(struct ism_dev *ism, u64 vlan_id)
return ism_cmd(ism, &cmd);
}
-static int smcd_del_vlan_id(struct smcd_dev *smcd, u64 vlan_id)
-{
- return ism_del_vlan_id(smcd->priv, vlan_id);
-}
-
-static int ism_set_vlan_required(struct smcd_dev *smcd)
+static int ism_signal_ieq(struct ism_dev *ism, u64 rgid, u32 trigger_irq,
+ u32 event_code, u64 info)
{
- return ism_cmd_simple(smcd->priv, ISM_SET_VLAN);
-}
-
-static int ism_reset_vlan_required(struct smcd_dev *smcd)
-{
- return ism_cmd_simple(smcd->priv, ISM_RESET_VLAN);
-}
-
-static int smcd_signal_ieq(struct smcd_dev *smcd, u64 rgid, u32 trigger_irq,
- u32 event_code, u64 info)
-{
- struct ism_dev *ism = smcd->priv;
union ism_sig_ieq cmd;
memset(&cmd, 0, sizeof(cmd));
@@ -466,11 +430,9 @@ static unsigned int max_bytes(unsigned int start, unsigned int len,
return min(boundary - (start & (boundary - 1)), len);
}
-static int smcd_move(struct smcd_dev *smcd, u64 dmb_tok, unsigned int idx,
- bool sf, unsigned int offset, void *data,
- unsigned int size)
+int ism_move(struct ism_dev *ism, u64 dmb_tok, unsigned int idx, bool sf,
+ unsigned int offset, void *data, unsigned int size)
{
- struct ism_dev *ism = smcd->priv;
unsigned int bytes;
u64 dmb_req;
int ret;
@@ -491,6 +453,7 @@ static int smcd_move(struct smcd_dev *smcd, u64 dmb_tok, unsigned int idx,
return 0;
}
+EXPORT_SYMBOL_GPL(ism_move);
static struct ism_systemeid SYSTEM_EID = {
.seid_string = "IBM-SYSZ-ISMSEID00000000",
@@ -518,10 +481,8 @@ u8 *ism_get_seid(void)
}
EXPORT_SYMBOL_GPL(ism_get_seid);
-static u16 smcd_get_chid(struct smcd_dev *smcd)
+static u16 ism_get_chid(struct ism_dev *ism)
{
- struct ism_dev *ism = smcd->priv;
-
if (!ism || !ism->pdev)
return 0;
@@ -583,28 +544,11 @@ static irqreturn_t ism_handle_irq(int irq, void *data)
return IRQ_HANDLED;
}
-static u64 smcd_get_local_gid(struct smcd_dev *smcd)
+static u64 ism_get_local_gid(struct ism_dev *ism)
{
- struct ism_dev *ism = smcd->priv;
-
return ism->local_gid;
}
-static const struct smcd_ops ism_ops = {
- .query_remote_gid = smcd_query_rgid,
- .register_dmb = smcd_register_dmb,
- .unregister_dmb = smcd_unregister_dmb,
- .add_vlan_id = smcd_add_vlan_id,
- .del_vlan_id = smcd_del_vlan_id,
- .set_vlan_required = ism_set_vlan_required,
- .reset_vlan_required = ism_reset_vlan_required,
- .signal_event = smcd_signal_ieq,
- .move_data = smcd_move,
- .get_system_eid = ism_get_seid,
- .get_local_gid = smcd_get_local_gid,
- .get_chid = smcd_get_chid,
-};
-
static void ism_dev_add_work_func(struct work_struct *work)
{
struct ism_client *client = container_of(work, struct ism_client,
@@ -846,3 +790,95 @@ static void __exit ism_exit(void)
module_init(ism_init);
module_exit(ism_exit);
+
+/*************************** SMC-D Implementation *****************************/
+
+#if IS_ENABLED(CONFIG_SMC)
+static int smcd_query_rgid(struct smcd_dev *smcd, u64 rgid, u32 vid_valid,
+ u32 vid)
+{
+ return ism_query_rgid(smcd->priv, rgid, vid_valid, vid);
+}
+
+static int smcd_register_dmb(struct smcd_dev *smcd, struct smcd_dmb *dmb,
+ struct ism_client *client)
+{
+ return ism_register_dmb(smcd->priv, (struct ism_dmb *)dmb, client);
+}
+
+static int smcd_unregister_dmb(struct smcd_dev *smcd, struct smcd_dmb *dmb)
+{
+ return ism_unregister_dmb(smcd->priv, (struct ism_dmb *)dmb);
+}
+
+static int smcd_add_vlan_id(struct smcd_dev *smcd, u64 vlan_id)
+{
+ return ism_add_vlan_id(smcd->priv, vlan_id);
+}
+
+static int smcd_del_vlan_id(struct smcd_dev *smcd, u64 vlan_id)
+{
+ return ism_del_vlan_id(smcd->priv, vlan_id);
+}
+
+static int smcd_set_vlan_required(struct smcd_dev *smcd)
+{
+ return ism_cmd_simple(smcd->priv, ISM_SET_VLAN);
+}
+
+static int smcd_reset_vlan_required(struct smcd_dev *smcd)
+{
+ return ism_cmd_simple(smcd->priv, ISM_RESET_VLAN);
+}
+
+static int smcd_signal_ieq(struct smcd_dev *smcd, u64 rgid, u32 trigger_irq,
+ u32 event_code, u64 info)
+{
+ return ism_signal_ieq(smcd->priv, rgid, trigger_irq, event_code, info);
+}
+
+static int smcd_move(struct smcd_dev *smcd, u64 dmb_tok, unsigned int idx,
+ bool sf, unsigned int offset, void *data,
+ unsigned int size)
+{
+ return ism_move(smcd->priv, dmb_tok, idx, sf, offset, data, size);
+}
+
+static u64 smcd_get_local_gid(struct smcd_dev *smcd)
+{
+ return ism_get_local_gid(smcd->priv);
+}
+
+static u16 smcd_get_chid(struct smcd_dev *smcd)
+{
+ return ism_get_chid(smcd->priv);
+}
+
+static inline struct device *smcd_get_dev(struct smcd_dev *dev)
+{
+ struct ism_dev *ism = dev->priv;
+
+ return &ism->dev;
+}
+
+static const struct smcd_ops ism_ops = {
+ .query_remote_gid = smcd_query_rgid,
+ .register_dmb = smcd_register_dmb,
+ .unregister_dmb = smcd_unregister_dmb,
+ .add_vlan_id = smcd_add_vlan_id,
+ .del_vlan_id = smcd_del_vlan_id,
+ .set_vlan_required = smcd_set_vlan_required,
+ .reset_vlan_required = smcd_reset_vlan_required,
+ .signal_event = smcd_signal_ieq,
+ .move_data = smcd_move,
+ .get_system_eid = ism_get_seid,
+ .get_local_gid = smcd_get_local_gid,
+ .get_chid = smcd_get_chid,
+};
+
+const struct smcd_ops *ism_get_smcd_ops(void)
+{
+ return &ism_ops;
+}
+EXPORT_SYMBOL_GPL(ism_get_smcd_ops);
+#endif
diff --git a/include/linux/ism.h b/include/linux/ism.h
index bdd29e08d4fe..104ce2fd503a 100644
--- a/include/linux/ism.h
+++ b/include/linux/ism.h
@@ -94,4 +94,6 @@ int ism_move(struct ism_dev *dev, u64 dmb_tok, unsigned int idx, bool sf,
unsigned int offset, void *data, unsigned int size);
u8 *ism_get_seid(void);
+const struct smcd_ops *ism_get_smcd_ops(void);
+
#endif /* _ISM_H */
diff --git a/include/net/smc.h b/include/net/smc.h
index d5f8f18169d7..556b96c12279 100644
--- a/include/net/smc.h
+++ b/include/net/smc.h
@@ -50,11 +50,13 @@ struct smcd_dmb {
#define ISM_ERROR 0xFFFF
struct smcd_dev;
+struct ism_client;
struct smcd_ops {
int (*query_remote_gid)(struct smcd_dev *dev, u64 rgid, u32 vid_valid,
u32 vid);
- int (*register_dmb)(struct smcd_dev *dev, struct smcd_dmb *dmb);
+ int (*register_dmb)(struct smcd_dev *dev, struct smcd_dmb *dmb,
+ struct ism_client *client);
int (*unregister_dmb)(struct smcd_dev *dev, struct smcd_dmb *dmb);
int (*add_vlan_id)(struct smcd_dev *dev, u64 vlan_id);
int (*del_vlan_id)(struct smcd_dev *dev, u64 vlan_id);
@@ -73,7 +75,6 @@ struct smcd_ops {
struct smcd_dev {
const struct smcd_ops *ops;
struct device dev;
- struct ism_dev *ism;
void *priv;
struct list_head list;
spinlock_t lock;
diff --git a/net/smc/smc_ism.c b/net/smc/smc_ism.c
index 6d31e9bbc5f9..6196b305df44 100644
--- a/net/smc/smc_ism.c
+++ b/net/smc/smc_ism.c
@@ -27,6 +27,7 @@ struct smcd_dev_list smcd_dev_list = {
static bool smc_ism_v2_capable;
static u8 smc_ism_v2_system_eid[SMC_MAX_EID_LEN];
+#if IS_ENABLED(CONFIG_ISM)
static void smcd_register_dev(struct ism_dev *ism);
static void smcd_unregister_dev(struct ism_dev *ism);
static void smcd_handle_event(struct ism_dev *ism, struct ism_event *event);
@@ -40,6 +41,7 @@ static struct ism_client smc_ism_client = {
.handle_event = smcd_handle_event,
.handle_irq = smcd_handle_irq,
};
+#endif
/* Test if an ISM communication is possible - same CPC */
int smc_ism_cantalk(u64 peer_gid, unsigned short vlan_id, struct smcd_dev *smcd)
@@ -198,6 +200,7 @@ int smc_ism_unregister_dmb(struct smcd_dev *smcd, struct smc_buf_desc *dmb_desc)
int smc_ism_register_dmb(struct smc_link_group *lgr, int dmb_len,
struct smc_buf_desc *dmb_desc)
{
+#if IS_ENABLED(CONFIG_ISM)
struct smcd_dmb dmb;
int rc;
@@ -206,7 +209,7 @@ int smc_ism_register_dmb(struct smc_link_group *lgr, int dmb_len,
dmb.sba_idx = dmb_desc->sba_idx;
dmb.vlan_id = lgr->vlan_id;
dmb.rgid = lgr->peer_gid;
- rc = lgr->smcd->ops->register_dmb(lgr->smcd, &dmb);
+ rc = lgr->smcd->ops->register_dmb(lgr->smcd, &dmb, &smc_ism_client);
if (!rc) {
dmb_desc->sba_idx = dmb.sba_idx;
dmb_desc->token = dmb.dmb_tok;
@@ -215,6 +218,9 @@ int smc_ism_register_dmb(struct smc_link_group *lgr, int dmb_len,
dmb_desc->len = dmb.dmb_len;
}
return rc;
+#else
+ return 0;
+#endif
}
static int smc_nl_handle_smcd_dev(struct smcd_dev *smcd,
@@ -308,6 +314,7 @@ int smcd_nl_get_device(struct sk_buff *skb, struct netlink_callback *cb)
return skb->len;
}
+#if IS_ENABLED(CONFIG_ISM)
struct smc_ism_event_work {
struct work_struct work;
struct smcd_dev *smcd;
@@ -351,24 +358,6 @@ static void smcd_handle_sw_event(struct smc_ism_event_work *wrk)
}
}
-int smc_ism_signal_shutdown(struct smc_link_group *lgr)
-{
- int rc;
- union smcd_sw_event_info ev_info;
-
- if (lgr->peer_shutdown)
- return 0;
-
- memcpy(ev_info.uid, lgr->id, SMC_LGR_ID_SIZE);
- ev_info.vlan_id = lgr->vlan_id;
- ev_info.code = ISM_EVENT_REQUEST;
- rc = lgr->smcd->ops->signal_event(lgr->smcd, lgr->peer_gid,
- ISM_EVENT_REQUEST_IR,
- ISM_EVENT_CODE_SHUTDOWN,
- ev_info.info);
- return rc;
-}
-
/* worker for SMC-D events */
static void smc_ism_event_work(struct work_struct *work)
{
@@ -442,9 +431,12 @@ EXPORT_SYMBOL_GPL(smcd_free_dev);
static void smcd_register_dev(struct ism_dev *ism)
{
- const struct smcd_ops *ops = NULL;
+ const struct smcd_ops *ops = ism_get_smcd_ops();
struct smcd_dev *smcd;
+ if (!ops)
+ return;
+
smcd = smcd_alloc_dev(&ism->pdev->dev, dev_name(&ism->pdev->dev), ops,
ISM_NR_DMBS);
if (!smcd)
@@ -550,16 +542,39 @@ static void smcd_handle_irq(struct ism_dev *ism, unsigned int dmbno,
tasklet_schedule(&conn->rx_tsklet);
spin_unlock_irqrestore(&smcd->lock, flags);
}
+#endif
+
+int smc_ism_signal_shutdown(struct smc_link_group *lgr)
+{
+ int rc = 0;
+#if IS_ENABLED(CONFIG_ISM)
+ union smcd_sw_event_info ev_info;
+
+ if (lgr->peer_shutdown)
+ return 0;
+
+ memcpy(ev_info.uid, lgr->id, SMC_LGR_ID_SIZE);
+ ev_info.vlan_id = lgr->vlan_id;
+ ev_info.code = ISM_EVENT_REQUEST;
+ rc = lgr->smcd->ops->signal_event(lgr->smcd, lgr->peer_gid,
+ ISM_EVENT_REQUEST_IR,
+ ISM_EVENT_CODE_SHUTDOWN,
+ ev_info.info);
+#endif
+ return rc;
+}
int smc_ism_init(void)
{
+ int rc = 0;
+
+#if IS_ENABLED(CONFIG_ISM)
smc_ism_v2_capable = false;
memset(smc_ism_v2_system_eid, 0, SMC_MAX_EID_LEN);
-#if IS_ENABLED(CONFIG_ISM)
- return ism_register_client(&smc_ism_client);
-#else
- return 0;
+
+ rc = ism_register_client(&smc_ism_client);
#endif
+ return rc;
}
void smc_ism_exit(void)
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-22 07:21:04 +0300