[PATCH net-next 06/18] net/smc: extend GID to 128bits for virtual ISM device

Wen Gu
2023-09-19T14:43:03Z

As the SMC-Dv2 protocol introduces virtual ISM devices, whose GIDs
are UUIDs generated by software, the maximum length of SMC-D GID has
been extended to 128 bits.

So this patch adapts the relevant code to make it compatible with
128 bits GID.

Signed-off-by: Wen Gu <guwen@linux.alibaba.com>
---
drivers/s390/net/ism_drv.c | 11 ++++++-----
include/net/smc.h | 11 ++++++++---
include/uapi/linux/smc.h | 3 +++
net/smc/af_smc.c | 45 +++++++++++++++++++++++++++++++++------------
net/smc/smc_clc.c | 35 ++++++++++++++++++++++++-----------
net/smc/smc_clc.h | 4 ++--
net/smc/smc_core.c | 38 +++++++++++++++++++++++++++++---------
net/smc/smc_core.h | 7 ++++---
net/smc/smc_diag.c | 6 ++++--
net/smc/smc_ism.c | 13 +++++++++----
net/smc/smc_ism.h | 3 ++-
net/smc/smc_pnet.c | 4 ++--
12 files changed, 126 insertions(+), 54 deletions(-)

diff --git a/drivers/s390/net/ism_drv.c b/drivers/s390/net/ism_drv.c
index a34e913..1b714f6 100644
--- a/drivers/s390/net/ism_drv.c
+++ b/drivers/s390/net/ism_drv.c
@@ -774,10 +774,10 @@ static void __exit ism_exit(void)
/*************************** SMC-D Implementation *****************************/

#if IS_ENABLED(CONFIG_SMC)
-static int smcd_query_rgid(struct smcd_dev *smcd, u64 rgid, u32 vid_valid,
- u32 vid)
+static int smcd_query_rgid(struct smcd_dev *smcd, struct smcd_gid *rgid,
+ u32 vid_valid, u32 vid)
{
- return ism_query_rgid(smcd->priv, rgid, vid_valid, vid);
+ return ism_query_rgid(smcd->priv, rgid->gid, vid_valid, vid);
}

static int smcd_register_dmb(struct smcd_dev *smcd, struct smcd_dmb *dmb,
@@ -830,9 +830,10 @@ static int smcd_supports_v2(void)
SYSTEM_EID.type[0] != '0';
}

-static u64 smcd_get_local_gid(struct smcd_dev *smcd)
+static void smcd_get_local_gid(struct smcd_dev *smcd,
+ struct smcd_gid *smcd_gid)
{
- return ism_get_local_gid(smcd->priv);
+ smcd_gid->gid = ism_get_local_gid(smcd->priv);
}

static u16 smcd_get_chid(struct smcd_dev *smcd)
diff --git a/include/net/smc.h b/include/net/smc.h
index f75116e..a37fb38 100644
--- a/include/net/smc.h
+++ b/include/net/smc.h
@@ -51,9 +51,14 @@ struct smcd_dmb {

struct smcd_dev;

+struct smcd_gid {
+ u64 gid;
+ u64 gid_ext;
+};
+
struct smcd_ops {
- int (*query_remote_gid)(struct smcd_dev *dev, u64 rgid, u32 vid_valid,
- u32 vid);
+ int (*query_remote_gid)(struct smcd_dev *dev, struct smcd_gid *rgid,
+ u32 vid_valid, u32 vid);
int (*register_dmb)(struct smcd_dev *dev, struct smcd_dmb *dmb,
void *client);
int (*unregister_dmb)(struct smcd_dev *dev, struct smcd_dmb *dmb);
@@ -68,7 +73,7 @@ struct smcd_ops {
unsigned int size);
int (*supports_v2)(void);
u8* (*get_system_eid)(void);
- u64 (*get_local_gid)(struct smcd_dev *dev);
+ void (*get_local_gid)(struct smcd_dev *dev, struct smcd_gid *gid);
u16 (*get_chid)(struct smcd_dev *dev);
struct device* (*get_dev)(struct smcd_dev *dev);
};
diff --git a/include/uapi/linux/smc.h b/include/uapi/linux/smc.h
index 837fcd4..0d2f020 100644
--- a/include/uapi/linux/smc.h
+++ b/include/uapi/linux/smc.h
@@ -99,6 +99,9 @@ enum {
SMC_NLA_LGR_V2_OS, /* u8 */
SMC_NLA_LGR_V2_NEG_EID, /* string */
SMC_NLA_LGR_V2_PEER_HOST, /* string */
+ SMC_NLA_LGR_V2_PAD, /* flag */
+ SMC_NLA_LGR_V2_GID_EXT, /* u64 */
+ SMC_NLA_LGR_V2_PEER_GID_EXT, /* u64 */
__SMC_NLA_LGR_V2_MAX,
SMC_NLA_LGR_V2_MAX = __SMC_NLA_LGR_V2_MAX - 1
};
diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c
index bacdd97..9e31033 100644
--- a/net/smc/af_smc.c
+++ b/net/smc/af_smc.c
@@ -1044,7 +1044,8 @@ static int smc_find_ism_v2_device_clnt(struct smc_sock *smc,
{
int rc = SMC_CLC_DECL_NOSMCDDEV;
struct smcd_dev *smcd;
- int i = 1;
+ int i = 1, slot = 1;
+ bool is_virtdev;
u16 chid;

if (smcd_indicated(ini->smc_type_v1))
@@ -1056,14 +1057,19 @@ static int smc_find_ism_v2_device_clnt(struct smc_sock *smc,
chid = smc_ism_get_chid(smcd);
if (!smc_find_ism_v2_is_unique_chid(chid, ini, i))
continue;
+ is_virtdev = __smc_ism_is_virtdev(chid);
if (!smc_pnet_is_pnetid_set(smcd->pnetid) ||
smc_pnet_is_ndev_pnetid(sock_net(&smc->sk), smcd->pnetid)) {
+ /* GID-CHID array is not enough for a virtual GID (128bits) */
+ if (is_virtdev && slot >= SMC_MAX_ISM_DEVS)
+ continue;
ini->ism_dev[i] = smcd;
ini->ism_chid[i] = chid;
ini->is_smcd = true;
rc = 0;
i++;
- if (i > SMC_MAX_ISM_DEVS)
+ slot = is_virtdev ? slot + 2 : slot + 1;
+ if (slot > SMC_MAX_ISM_DEVS)
break;
}
}
@@ -1409,8 +1415,9 @@ static int smc_connect_ism(struct smc_sock *smc,
rc = smc_v2_determine_accepted_chid(aclc_v2, ini);
if (rc)
return rc;
+ ini->ism_peer_gid[ini->ism_selected].gid_ext = aclc_v2->d1.gid_ext;
}
- ini->ism_peer_gid[ini->ism_selected] = aclc->d0.gid;
+ ini->ism_peer_gid[ini->ism_selected].gid = aclc->d0.gid;

/* there is only one lgr role for SMC-D; use server lock */
mutex_lock(&smc_server_lgr_pending);
@@ -2101,7 +2108,8 @@ static bool smc_is_already_selected(struct smcd_dev *smcd,

/* check for ISM devices matching proposed ISM devices */
static void smc_check_ism_v2_match(struct smc_init_info *ini,
- u16 proposed_chid, u64 proposed_gid,
+ u16 proposed_chid,
+ struct smcd_gid *proposed_gid,
unsigned int *matches)
{
struct smcd_dev *smcd;
@@ -2113,7 +2121,10 @@ static void smc_check_ism_v2_match(struct smc_init_info *ini,
continue;
if (smc_ism_get_chid(smcd) == proposed_chid &&
!smc_ism_cantalk(proposed_gid, ISM_RESERVED_VLANID, smcd)) {
- ini->ism_peer_gid[*matches] = proposed_gid;
+ ini->ism_peer_gid[*matches].gid = proposed_gid->gid;
+ if (__smc_ism_is_virtdev(proposed_chid))
+ ini->ism_peer_gid[*matches].gid_ext =
+ proposed_gid->gid_ext;
ini->ism_dev[*matches] = smcd;
(*matches)++;
break;
@@ -2135,9 +2146,11 @@ static void smc_find_ism_v2_device_serv(struct smc_sock *new_smc,
struct smc_clc_v2_extension *smc_v2_ext;
struct smc_clc_msg_smcd *pclc_smcd;
unsigned int matches = 0;
+ struct smcd_gid smcd_gid;
u8 smcd_version;
u8 *eid = NULL;
int i, rc;
+ u16 chid;

if (!(ini->smcd_version & SMC_V2) || !smcd_indicated(ini->smc_type_v2))
goto not_found;
@@ -2147,18 +2160,26 @@ static void smc_find_ism_v2_device_serv(struct smc_sock *new_smc,
smcd_v2_ext = smc_get_clc_smcd_v2_ext(smc_v2_ext);

mutex_lock(&smcd_dev_list.mutex);
- if (pclc_smcd->ism.chid)
+ if (pclc_smcd->ism.chid) {
/* check for ISM device matching proposed native ISM device */
+ smcd_gid.gid = ntohll(pclc_smcd->ism.gid);
smc_check_ism_v2_match(ini, ntohs(pclc_smcd->ism.chid),
- ntohll(pclc_smcd->ism.gid), &matches);
+ &smcd_gid, &matches);
+ }
for (i = 1; i <= smc_v2_ext->hdr.ism_gid_cnt; i++) {
/* check for ISM devices matching proposed non-native ISM
* devices
*/
- smc_check_ism_v2_match(ini,
- ntohs(smcd_v2_ext->gidchid[i - 1].chid),
- ntohll(smcd_v2_ext->gidchid[i - 1].gid),
- &matches);
+ smcd_gid.gid = ntohll(smcd_v2_ext->gidchid[i - 1].gid);
+ chid = ntohs(smcd_v2_ext->gidchid[i - 1].chid);
+ if (__smc_ism_is_virtdev(chid)) {
+ /* check if extended entry exists and is valid */
+ if (i >= smc_v2_ext->hdr.ism_gid_cnt ||
+ chid != ntohs(smcd_v2_ext->gidchid[i].chid))
+ continue;
+ smcd_gid.gid_ext = ntohll(smcd_v2_ext->gidchid[i++].gid);
+ }
+ smc_check_ism_v2_match(ini, chid, &smcd_gid, &matches);
}
mutex_unlock(&smcd_dev_list.mutex);

@@ -2207,7 +2228,7 @@ static void smc_find_ism_v1_device_serv(struct smc_sock *new_smc,
if (!(ini->smcd_version & SMC_V1) || !smcd_indicated(ini->smc_type_v1))
goto not_found;
ini->is_smcd = true; /* prepare ISM check */
- ini->ism_peer_gid[0] = ntohll(pclc_smcd->ism.gid);
+ ini->ism_peer_gid[0].gid = ntohll(pclc_smcd->ism.gid);
rc = smc_find_ism_device(new_smc, ini);
if (rc)
goto not_found;
diff --git a/net/smc/smc_clc.c b/net/smc/smc_clc.c
index 125b0d2..c08e138 100644
--- a/net/smc/smc_clc.c
+++ b/net/smc/smc_clc.c
@@ -882,11 +882,13 @@ int smc_clc_send_proposal(struct smc_sock *smc, struct smc_init_info *ini)
ETH_ALEN);
}
if (smcd_indicated(ini->smc_type_v1)) {
+ struct smcd_gid smcd_gid;
+
/* add SMC-D specifics */
if (ini->ism_dev[0]) {
smcd = ini->ism_dev[0];
- pclc_smcd->ism.gid =
- htonll(smcd->ops->get_local_gid(smcd));
+ smcd->ops->get_local_gid(smcd, &smcd_gid);
+ pclc_smcd->ism.gid = htonll(smcd_gid.gid);
pclc_smcd->ism.chid =
htons(smc_ism_get_chid(ini->ism_dev[0]));
}
@@ -919,10 +921,11 @@ int smc_clc_send_proposal(struct smc_sock *smc, struct smc_init_info *ini)
read_unlock(&smc_clc_eid_table.lock);
}
if (smcd_indicated(ini->smc_type_v2)) {
+ struct smcd_gid smcd_gid;
u8 *eid = NULL;
+ int slot = 0;

v2_ext->hdr.flag.seid = smc_clc_eid_table.seid_enabled;
- v2_ext->hdr.ism_gid_cnt = ini->ism_offered_cnt;
v2_ext->hdr.smcd_v2_ext_offset = htons(sizeof(*v2_ext) -
offsetofend(struct smc_clnt_opts_area_hdr,
smcd_v2_ext_offset) +
@@ -934,14 +937,21 @@ int smc_clc_send_proposal(struct smc_sock *smc, struct smc_init_info *ini)
if (ini->ism_offered_cnt) {
for (i = 1; i <= ini->ism_offered_cnt; i++) {
smcd = ini->ism_dev[i];
- gidchids[i - 1].gid =
- htonll(smcd->ops->get_local_gid(smcd));
- gidchids[i - 1].chid =
+ smcd->ops->get_local_gid(smcd, &smcd_gid);
+ gidchids[slot].chid =
htons(smc_ism_get_chid(ini->ism_dev[i]));
+ gidchids[slot].gid = htonll(smcd_gid.gid);
+ /* virtual-ism takes two slots */
+ if (__smc_ism_is_virtdev(gidchids[slot].chid)) {
+ gidchids[slot + 1].chid = gidchids[slot].chid;
+ gidchids[slot + 1].gid = htonll(smcd_gid.gid_ext);
+ slot++;
+ }
+ slot++;
}
- plen += ini->ism_offered_cnt *
- sizeof(struct smc_clc_smcd_gid_chid);
+ plen += slot * sizeof(struct smc_clc_smcd_gid_chid);
}
+ v2_ext->hdr.ism_gid_cnt = slot;
}
if (smcr_indicated(ini->smc_type_v2)) {
memcpy(v2_ext->roce, ini->smcrv2.ib_gid_v2, SMC_GID_SIZE);
@@ -977,7 +987,7 @@ int smc_clc_send_proposal(struct smc_sock *smc, struct smc_init_info *ini)
vec[i++].iov_len = sizeof(*smcd_v2_ext);
if (ini->ism_offered_cnt) {
vec[i].iov_base = gidchids;
- vec[i++].iov_len = ini->ism_offered_cnt *
+ vec[i++].iov_len = v2_ext->hdr.ism_gid_cnt *
sizeof(struct smc_clc_smcd_gid_chid);
}
}
@@ -1019,12 +1029,14 @@ static int smc_clc_send_confirm_accept(struct smc_sock *smc,
if (first_contact)
clc->hdr.typev2 |= SMC_FIRST_CONTACT_MASK;
if (conn->lgr->is_smcd) {
+ struct smcd_gid smcd_gid;
+
/* SMC-D specific settings */
memcpy(clc->hdr.eyecatcher, SMCD_EYECATCHER,
sizeof(SMCD_EYECATCHER));
+ conn->lgr->smcd->ops->get_local_gid(conn->lgr->smcd, &smcd_gid);
clc->hdr.typev1 = SMC_TYPE_D;
- clc->d0.gid =
- conn->lgr->smcd->ops->get_local_gid(conn->lgr->smcd);
+ clc->d0.gid = smcd_gid.gid;
clc->d0.token = conn->rmb_desc->token;
clc->d0.dmbe_size = conn->rmbe_size_comp;
clc->d0.dmbe_idx = 0;
@@ -1036,6 +1048,7 @@ static int smc_clc_send_confirm_accept(struct smc_sock *smc,
htons(smc_ism_get_chid(conn->lgr->smcd));
if (eid && eid[0])
memcpy(clc_v2->d1.eid, eid, SMC_MAX_EID_LEN);
+ clc_v2->d1.gid_ext = smcd_gid.gid_ext;
len = SMCD_CLC_ACCEPT_CONFIRM_LEN_V2;
if (first_contact) {
fce_len = smc_clc_fill_fce(&fce, ini);
diff --git a/net/smc/smc_clc.h b/net/smc/smc_clc.h
index bcf37c8..611763a 100644
--- a/net/smc/smc_clc.h
+++ b/net/smc/smc_clc.h
@@ -281,8 +281,8 @@ struct smc_clc_msg_accept_confirm_v2 { /* clc accept / confirm message */
struct smcd_clc_msg_accept_confirm_common d0;
__be16 chid;
u8 eid[SMC_MAX_EID_LEN];
- u8 reserved5[8];
- } d1;
+ __be64 gid_ext;
+ } __packed d1;
};
};

diff --git a/net/smc/smc_core.c b/net/smc/smc_core.c
index d520ee6..c36500a 100644
--- a/net/smc/smc_core.c
+++ b/net/smc/smc_core.c
@@ -284,6 +284,9 @@ static int smc_nl_fill_lgr_v2_common(struct smc_link_group *lgr,
{
char smc_host[SMC_MAX_HOSTNAME_LEN + 1];
char smc_eid[SMC_MAX_EID_LEN + 1];
+ struct smcd_dev *smcd = lgr->smcd;
+ struct smcd_gid smcd_gid;
+ bool is_virtdev;

if (nla_put_u8(skb, SMC_NLA_LGR_V2_VER, lgr->smc_version))
goto errv2attr;
@@ -299,6 +302,16 @@ static int smc_nl_fill_lgr_v2_common(struct smc_link_group *lgr,
smc_eid[SMC_MAX_EID_LEN] = 0;
if (nla_put_string(skb, SMC_NLA_LGR_V2_NEG_EID, smc_eid))
goto errv2attr;
+ smcd->ops->get_local_gid(smcd, &smcd_gid);
+ is_virtdev = smc_ism_is_virtdev(smcd);
+ if (nla_put_u64_64bit(skb, SMC_NLA_LGR_V2_GID_EXT,
+ is_virtdev ? smcd_gid.gid_ext : 0,
+ SMC_NLA_LGR_V2_PAD))
+ goto errv2attr;
+ if (nla_put_u64_64bit(skb, SMC_NLA_LGR_V2_PEER_GID_EXT,
+ is_virtdev ? lgr->peer_gid.gid_ext : 0,
+ SMC_NLA_LGR_V2_PAD))
+ goto errv2attr;

nla_nest_end(skb, v2_attrs);
return 0;
@@ -506,6 +519,7 @@ static int smc_nl_fill_smcd_lgr(struct smc_link_group *lgr,
{
char smc_pnet[SMC_MAX_PNETID_LEN + 1];
struct smcd_dev *smcd = lgr->smcd;
+ struct smcd_gid smcd_gid;
struct nlattr *attrs;
void *nlh;

@@ -521,11 +535,11 @@ static int smc_nl_fill_smcd_lgr(struct smc_link_group *lgr,

if (nla_put_u32(skb, SMC_NLA_LGR_D_ID, *((u32 *)&lgr->id)))
goto errattr;
+ smcd->ops->get_local_gid(smcd, &smcd_gid);
if (nla_put_u64_64bit(skb, SMC_NLA_LGR_D_GID,
- smcd->ops->get_local_gid(smcd),
- SMC_NLA_LGR_D_PAD))
+ smcd_gid.gid, SMC_NLA_LGR_D_PAD))
goto errattr;
- if (nla_put_u64_64bit(skb, SMC_NLA_LGR_D_PEER_GID, lgr->peer_gid,
+ if (nla_put_u64_64bit(skb, SMC_NLA_LGR_D_PEER_GID, lgr->peer_gid.gid,
SMC_NLA_LGR_D_PAD))
goto errattr;
if (nla_put_u8(skb, SMC_NLA_LGR_D_VLAN_ID, lgr->vlan_id))
@@ -1514,7 +1528,8 @@ void smc_lgr_terminate_sched(struct smc_link_group *lgr)
}

/* Called when peer lgr shutdown (regularly or abnormally) is received */
-void smc_smcd_terminate(struct smcd_dev *dev, u64 peer_gid, unsigned short vlan)
+void smc_smcd_terminate(struct smcd_dev *dev, struct smcd_gid *peer_gid,
+ unsigned short vlan)
{
struct smc_link_group *lgr, *l;
LIST_HEAD(lgr_free_list);
@@ -1522,7 +1537,10 @@ void smc_smcd_terminate(struct smcd_dev *dev, u64 peer_gid, unsigned short vlan)
/* run common cleanup function and build free list */
spin_lock_bh(&dev->lgr_lock);
list_for_each_entry_safe(lgr, l, &dev->lgr_list, list) {
- if ((!peer_gid || lgr->peer_gid == peer_gid) &&
+ if ((!peer_gid->gid ||
+ (lgr->peer_gid.gid == peer_gid->gid &&
+ !smc_ism_is_virtdev(dev) ? 1 :
+ lgr->peer_gid.gid_ext == peer_gid->gid_ext)) &&
(vlan == VLAN_VID_MASK || lgr->vlan_id == vlan)) {
if (peer_gid) /* peer triggered termination */
lgr->peer_shutdown = 1;
@@ -1859,10 +1877,12 @@ static bool smcr_lgr_match(struct smc_link_group *lgr, u8 smcr_version,
return false;
}

-static bool smcd_lgr_match(struct smc_link_group *lgr,
- struct smcd_dev *smcismdev, u64 peer_gid)
+static bool smcd_lgr_match(struct smc_link_group *lgr, struct smcd_dev *smcismdev,
+ struct smcd_gid *peer_gid)
{
- return lgr->peer_gid == peer_gid && lgr->smcd == smcismdev;
+ return lgr->peer_gid.gid == peer_gid->gid && lgr->smcd == smcismdev &&
+ smc_ism_is_virtdev(smcismdev) ?
+ (lgr->peer_gid.gid_ext == peer_gid->gid_ext) : 1;
}

/* create a new SMC connection (and a new link group if necessary) */
@@ -1892,7 +1912,7 @@ int smc_conn_create(struct smc_sock *smc, struct smc_init_info *ini)
write_lock_bh(&lgr->conns_lock);
if ((ini->is_smcd ?
smcd_lgr_match(lgr, ini->ism_dev[ini->ism_selected],
- ini->ism_peer_gid[ini->ism_selected]) :
+ &ini->ism_peer_gid[ini->ism_selected]) :
smcr_lgr_match(lgr, ini->smcr_version,
ini->peer_systemid,
ini->peer_gid, ini->peer_mac, role,
diff --git a/net/smc/smc_core.h b/net/smc/smc_core.h
index 9f65678..d57eb9b 100644
--- a/net/smc/smc_core.h
+++ b/net/smc/smc_core.h
@@ -17,6 +17,7 @@
#include <linux/pci.h>
#include <rdma/ib_verbs.h>
#include <net/genetlink.h>
+#include <net/smc.h>

#include "smc.h"
#include "smc_ib.h"
@@ -355,7 +356,7 @@ struct smc_link_group {
/* max links can be added in lgr */
};
struct { /* SMC-D */
- u64 peer_gid;
+ struct smcd_gid peer_gid;
/* Peer GID (remote) */
struct smcd_dev *smcd;
/* ISM device for VLAN reg. */
@@ -417,7 +418,7 @@ struct smc_init_info {
u32 ib_clcqpn;
struct smc_init_info_smcrv2 smcrv2;
/* SMC-D */
- u64 ism_peer_gid[SMC_MAX_ISM_DEVS + 1];
+ struct smcd_gid ism_peer_gid[SMC_MAX_ISM_DEVS + 1];
struct smcd_dev *ism_dev[SMC_MAX_ISM_DEVS + 1];
u16 ism_chid[SMC_MAX_ISM_DEVS + 1];
u8 ism_offered_cnt; /* # of ISM devices offered */
@@ -545,7 +546,7 @@ static inline void smc_set_pci_values(struct pci_dev *pci_dev,
void smc_lgr_put(struct smc_link_group *lgr);
void smcr_port_add(struct smc_ib_device *smcibdev, u8 ibport);
void smcr_port_err(struct smc_ib_device *smcibdev, u8 ibport);
-void smc_smcd_terminate(struct smcd_dev *dev, u64 peer_gid,
+void smc_smcd_terminate(struct smcd_dev *dev, struct smcd_gid *peer_gid,
unsigned short vlan);
void smc_smcd_terminate_all(struct smcd_dev *dev);
void smc_smcr_terminate_all(struct smc_ib_device *smcibdev);
diff --git a/net/smc/smc_diag.c b/net/smc/smc_diag.c
index 7ff2152..9c465cc 100644
--- a/net/smc/smc_diag.c
+++ b/net/smc/smc_diag.c
@@ -168,12 +168,14 @@ static int __smc_diag_dump(struct sock *sk, struct sk_buff *skb,
struct smc_connection *conn = &smc->conn;
struct smcd_diag_dmbinfo dinfo;
struct smcd_dev *smcd = conn->lgr->smcd;
+ struct smcd_gid smcd_gid;

memset(&dinfo, 0, sizeof(dinfo));

dinfo.linkid = *((u32 *)conn->lgr->id);
- dinfo.peer_gid = conn->lgr->peer_gid;
- dinfo.my_gid = smcd->ops->get_local_gid(smcd);
+ dinfo.peer_gid = conn->lgr->peer_gid.gid;
+ smcd->ops->get_local_gid(smcd, &smcd_gid);
+ dinfo.my_gid = smcd_gid.gid;
dinfo.token = conn->rmb_desc->token;
dinfo.peer_token = conn->peer_token;

diff --git a/net/smc/smc_ism.c b/net/smc/smc_ism.c
index 6fa87d8..ba37b27 100644
--- a/net/smc/smc_ism.c
+++ b/net/smc/smc_ism.c
@@ -44,7 +44,8 @@ static void smcd_handle_irq(struct ism_dev *ism, unsigned int dmbno,
#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)
+int smc_ism_cantalk(struct smcd_gid *peer_gid, unsigned short vlan_id,
+ struct smcd_dev *smcd)
{
return smcd->ops->query_remote_gid(smcd, peer_gid, vlan_id ? 1 : 0,
vlan_id);
@@ -223,7 +224,7 @@ int smc_ism_register_dmb(struct smc_link_group *lgr, int dmb_len,
dmb.dmb_len = dmb_len;
dmb.sba_idx = dmb_desc->sba_idx;
dmb.vlan_id = lgr->vlan_id;
- dmb.rgid = lgr->peer_gid;
+ dmb.rgid = lgr->peer_gid.gid;
rc = lgr->smcd->ops->register_dmb(lgr->smcd, &dmb, lgr->smcd->client);
if (!rc) {
dmb_desc->sba_idx = dmb.sba_idx;
@@ -355,11 +356,13 @@ struct smc_ism_event_work {
static void smcd_handle_sw_event(struct smc_ism_event_work *wrk)
{
union smcd_sw_event_info ev_info;
+ struct smcd_gid peer_gid;

ev_info.info = wrk->event.info;
switch (wrk->event.code) {
case ISM_EVENT_CODE_SHUTDOWN: /* Peer shut down DMBs */
- smc_smcd_terminate(wrk->smcd, wrk->event.tok, ev_info.vlan_id);
+ peer_gid.gid = wrk->event.tok;
+ smc_smcd_terminate(wrk->smcd, &peer_gid, ev_info.vlan_id);
break;
case ISM_EVENT_CODE_TESTLINK: /* Activity timer */
if (ev_info.code == ISM_EVENT_REQUEST) {
@@ -379,10 +382,12 @@ static void smc_ism_event_work(struct work_struct *work)
{
struct smc_ism_event_work *wrk =
container_of(work, struct smc_ism_event_work, work);
+ struct smcd_gid smcd_gid;

switch (wrk->event.type) {
case ISM_EVENT_GID: /* GID event, token is peer GID */
- smc_smcd_terminate(wrk->smcd, wrk->event.tok, VLAN_VID_MASK);
+ smcd_gid.gid = wrk->event.tok;
+ smc_smcd_terminate(wrk->smcd, &smcd_gid, VLAN_VID_MASK);
break;
case ISM_EVENT_DMB:
break;
diff --git a/net/smc/smc_ism.h b/net/smc/smc_ism.h
index 2ecc8de..e6ea08c 100644
--- a/net/smc/smc_ism.h
+++ b/net/smc/smc_ism.h
@@ -33,7 +33,8 @@ struct smc_ism_vlanid { /* VLAN id set on ISM device */

struct smcd_dev;

-int smc_ism_cantalk(u64 peer_gid, unsigned short vlan_id, struct smcd_dev *dev);
+int smc_ism_cantalk(struct smcd_gid *peer_gid, unsigned short vlan_id,
+ struct smcd_dev *dev);
void smc_ism_set_conn(struct smc_connection *conn);
void smc_ism_unset_conn(struct smc_connection *conn);
int smc_ism_get_vlan(struct smcd_dev *dev, unsigned short vlan_id);
diff --git a/net/smc/smc_pnet.c b/net/smc/smc_pnet.c
index 1177540..9f2c58c 100644
--- a/net/smc/smc_pnet.c
+++ b/net/smc/smc_pnet.c
@@ -1103,8 +1103,8 @@ static void smc_pnet_find_ism_by_pnetid(struct net_device *ndev,
list_for_each_entry(ismdev, &smcd_dev_list.list, list) {
if (smc_pnet_match(ismdev->pnetid, ndev_pnetid) &&
!ismdev->going_away &&
- (!ini->ism_peer_gid[0] ||
- !smc_ism_cantalk(ini->ism_peer_gid[0], ini->vlan_id,
+ (!ini->ism_peer_gid[0].gid ||
+ !smc_ism_cantalk(&ini->ism_peer_gid[0], ini->vlan_id,
ismdev))) {
ini->ism_dev[0] = ismdev;
break;
--
1.8.3.1