[PATCH net-next] net/smc: change the term virtual ISM to Emulated-ISM

Wen Gu
2024-02-05T03:33:31Z

According to latest release of SMCv2.1[1], the term 'virtual ISM' has
been changed to 'Emulated-ISM' to avoid the ambiguity of the word
'virtual' in different contexts. So the names or comments in the code
need be modified accordingly.

[1] https://www.ibm.com/support/pages/node/7112343

Signed-off-by: Wen Gu <guwen@linux.alibaba.com>
---
net/smc/af_smc.c | 22 +++++++++++-----------
net/smc/smc.h | 4 ++--
net/smc/smc_clc.c | 6 +++---
net/smc/smc_clc.h | 2 +-
net/smc/smc_core.c | 4 ++--
net/smc/smc_ism.h | 10 +++++-----
6 files changed, 24 insertions(+), 24 deletions(-)

diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c
index a2cb30af46cb..66763c74ab76 100644
--- a/net/smc/af_smc.c
+++ b/net/smc/af_smc.c
@@ -1045,7 +1045,7 @@ 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, entry = 1;
- bool is_virtual;
+ bool is_emulated;
u16 chid;

if (smcd_indicated(ini->smc_type_v1))
@@ -1057,12 +1057,12 @@ 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_virtual = __smc_ism_is_virtual(chid);
+ is_emulated = __smc_ism_is_emulated(chid);
if (!smc_pnet_is_pnetid_set(smcd->pnetid) ||
smc_pnet_is_ndev_pnetid(sock_net(&smc->sk), smcd->pnetid)) {
- if (is_virtual && entry == SMCD_CLC_MAX_V2_GID_ENTRIES)
+ if (is_emulated && entry == SMCD_CLC_MAX_V2_GID_ENTRIES)
/* It's the last GID-CHID entry left in CLC
- * Proposal SMC-Dv2 extension, but a virtual
+ * Proposal SMC-Dv2 extension, but an Emulated-
* ISM device will take two entries. So give
* up it and try the next potential ISM device.
*/
@@ -1072,7 +1072,7 @@ static int smc_find_ism_v2_device_clnt(struct smc_sock *smc,
ini->is_smcd = true;
rc = 0;
i++;
- entry = is_virtual ? entry + 2 : entry + 1;
+ entry = is_emulated ? entry + 2 : entry + 1;
if (entry > SMCD_CLC_MAX_V2_GID_ENTRIES)
break;
}
@@ -1413,10 +1413,10 @@ static int smc_connect_ism(struct smc_sock *smc,
if (rc)
return rc;

- if (__smc_ism_is_virtual(ini->ism_chid[ini->ism_selected]))
+ if (__smc_ism_is_emulated(ini->ism_chid[ini->ism_selected]))
ini->ism_peer_gid[ini->ism_selected].gid_ext =
ntohll(aclc->d1.gid_ext);
- /* for non-virtual ISM devices, peer gid_ext remains 0. */
+ /* for non-Emulated-ISM devices, peer gid_ext remains 0. */
}
ini->ism_peer_gid[ini->ism_selected].gid = ntohll(aclc->d0.gid);

@@ -2117,10 +2117,10 @@ static void smc_check_ism_v2_match(struct smc_init_info *ini,
if (smc_ism_get_chid(smcd) == proposed_chid &&
!smc_ism_cantalk(proposed_gid, ISM_RESERVED_VLANID, smcd)) {
ini->ism_peer_gid[*matches].gid = proposed_gid->gid;
- if (__smc_ism_is_virtual(proposed_chid))
+ if (__smc_ism_is_emulated(proposed_chid))
ini->ism_peer_gid[*matches].gid_ext =
proposed_gid->gid_ext;
- /* non-virtual ISM's peer gid_ext remains 0. */
+ /* non-Emulated-ISM's peer gid_ext remains 0. */
ini->ism_dev[*matches] = smcd;
(*matches)++;
break;
@@ -2170,10 +2170,10 @@ static void smc_find_ism_v2_device_serv(struct smc_sock *new_smc,
smcd_gid.gid = ntohll(smcd_v2_ext->gidchid[i].gid);
smcd_gid.gid_ext = 0;
chid = ntohs(smcd_v2_ext->gidchid[i].chid);
- if (__smc_ism_is_virtual(chid)) {
+ if (__smc_ism_is_emulated(chid)) {
if ((i + 1) == smc_v2_ext->hdr.ism_gid_cnt ||
chid != ntohs(smcd_v2_ext->gidchid[i + 1].chid))
- /* each virtual ISM device takes two GID-CHID
+ /* each Emulated-ISM device takes two GID-CHID
* entries and CHID of the second entry repeats
* that of the first entry.
*
diff --git a/net/smc/smc.h b/net/smc/smc.h
index df64efd2dee8..18c8b7870198 100644
--- a/net/smc/smc.h
+++ b/net/smc/smc.h
@@ -56,11 +56,11 @@ enum smc_state { /* possible states of an SMC socket */
};

enum smc_supplemental_features {
- SMC_SPF_VIRT_ISM_DEV = 0,
+ SMC_SPF_EMULATED_ISM_DEV = 0,
};

#define SMC_FEATURE_MASK \
- (BIT(SMC_SPF_VIRT_ISM_DEV))
+ (BIT(SMC_SPF_EMULATED_ISM_DEV))

struct smc_link_group;

diff --git a/net/smc/smc_clc.c b/net/smc/smc_clc.c
index 9a13709bea1c..e55026c7529c 100644
--- a/net/smc/smc_clc.c
+++ b/net/smc/smc_clc.c
@@ -952,8 +952,8 @@ int smc_clc_send_proposal(struct smc_sock *smc, struct smc_init_info *ini)
gidchids[entry].chid =
htons(smc_ism_get_chid(ini->ism_dev[i]));
gidchids[entry].gid = htonll(smcd_gid.gid);
- if (smc_ism_is_virtual(smcd)) {
- /* a virtual ISM device takes two
+ if (smc_ism_is_emulated(smcd)) {
+ /* an Emulated-ISM device takes two
* entries. CHID of the second entry
* repeats that of the first entry.
*/
@@ -1055,7 +1055,7 @@ smcd_clc_prep_confirm_accept(struct smc_connection *conn,
clc->d1.chid = htons(chid);
if (eid && eid[0])
memcpy(clc->d1.eid, eid, SMC_MAX_EID_LEN);
- if (__smc_ism_is_virtual(chid))
+ if (__smc_ism_is_emulated(chid))
clc->d1.gid_ext = htonll(smcd_gid.gid_ext);
len = SMCD_CLC_ACCEPT_CONFIRM_LEN_V2;
if (first_contact) {
diff --git a/net/smc/smc_clc.h b/net/smc/smc_clc.h
index a9f9bdd26dcd..7cc7070b9772 100644
--- a/net/smc/smc_clc.h
+++ b/net/smc/smc_clc.h
@@ -175,7 +175,7 @@ struct smc_clc_msg_proposal { /* clc proposal message sent by Linux */
#define SMCD_CLC_MAX_V2_GID_ENTRIES 8 /* max # of CHID-GID entries in CLC
* proposal SMC-Dv2 extension.
* each ISM device takes one entry and
- * each virtual ISM takes two entries.
+ * each Emulated-ISM takes two entries
*/

struct smc_clc_msg_proposal_area {
diff --git a/net/smc/smc_core.c b/net/smc/smc_core.c
index e4c858411207..9b84d5897aa5 100644
--- a/net/smc/smc_core.c
+++ b/net/smc/smc_core.c
@@ -1535,7 +1535,7 @@ void smc_smcd_terminate(struct smcd_dev *dev, struct smcd_gid *peer_gid,
list_for_each_entry_safe(lgr, l, &dev->lgr_list, list) {
if ((!peer_gid->gid ||
(lgr->peer_gid.gid == peer_gid->gid &&
- !smc_ism_is_virtual(dev) ? 1 :
+ !smc_ism_is_emulated(dev) ? 1 :
lgr->peer_gid.gid_ext == peer_gid->gid_ext)) &&
(vlan == VLAN_VID_MASK || lgr->vlan_id == vlan)) {
if (peer_gid->gid) /* peer triggered termination */
@@ -1881,7 +1881,7 @@ static bool smcd_lgr_match(struct smc_link_group *lgr,
lgr->smcd != smcismdev)
return false;

- if (smc_ism_is_virtual(smcismdev) &&
+ if (smc_ism_is_emulated(smcismdev) &&
lgr->peer_gid.gid_ext != peer_gid->gid_ext)
return false;

diff --git a/net/smc/smc_ism.h b/net/smc/smc_ism.h
index ffff40c30a06..165cd013404b 100644
--- a/net/smc/smc_ism.h
+++ b/net/smc/smc_ism.h
@@ -15,7 +15,7 @@

#include "smc.h"

-#define SMC_VIRTUAL_ISM_CHID_MASK 0xFF00
+#define SMC_EMULATED_ISM_CHID_MASK 0xFF00
#define SMC_ISM_IDENT_MASK 0x00FFFF

struct smcd_dev_list { /* List of SMCD devices */
@@ -66,10 +66,10 @@ static inline int smc_ism_write(struct smcd_dev *smcd, u64 dmb_tok,
return rc < 0 ? rc : 0;
}

-static inline bool __smc_ism_is_virtual(u16 chid)
+static inline bool __smc_ism_is_emulated(u16 chid)
{
/* CHIDs in range of 0xFF00 to 0xFFFF are reserved
- * for virtual ISM device.
+ * for Emulated-ISM device.
*
* loopback-ism: 0xFFFF
* virtio-ism: 0xFF00 ~ 0xFFFE
@@ -77,11 +77,11 @@ static inline bool __smc_ism_is_virtual(u16 chid)
return ((chid & 0xFF00) == 0xFF00);
}

-static inline bool smc_ism_is_virtual(struct smcd_dev *smcd)
+static inline bool smc_ism_is_emulated(struct smcd_dev *smcd)
{
u16 chid = smcd->ops->get_chid(smcd);

- return __smc_ism_is_virtual(chid);
+ return __smc_ism_is_emulated(chid);
}

#endif
--
2.32.0.3.g01195cf9f