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scsi: scsi_transport_fc: Introduce encryption group in fc_rport attribute

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Introduce a new structure for reporting an encrypted session over an
fc_rport.  The encryption group is added as an attribute in struct
fc_rport and reports information in fc_encryption_info.  This structure
contains a status member variable, which stores a bit value indicating
an encrypted session.

Signed-off-by: Sarah Catania <sarah.catania@broadcom.com>
Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Link: https://patch.msgid.link/20251211001659.138635-2-justintee8345@gmail.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Sarah Catania 2025-12-10 16:16:57 -08:00 • committed by Martin K. Petersen
parent 8f0b4cce44
commit bd2bc52869
4 changed files with 63 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

8
drivers/base/transport_class.c
View file

@ -169,6 +169,12 @@ static int transport_add_class_device(struct attribute_container *cont,
goto err_del;
}
if (tcont->encryption) {
error = sysfs_create_group(&classdev->kobj, tcont->encryption);
if (error)
goto err_del;
}
return 0;
err_del:
@ -244,6 +250,8 @@ static int transport_remove_classdev(struct attribute_container *cont,
if (tclass->remove != anon_transport_dummy_function) {
if (tcont->statistics)
sysfs_remove_group(&classdev->kobj, tcont->statistics);
if (tcont->encryption)
sysfs_remove_group(&classdev->kobj, tcont->encryption);
attribute_container_class_device_del(classdev);
}

42
drivers/scsi/scsi_transport_fc.c
View file

@ -1328,6 +1328,46 @@ store_fc_rport_fast_io_fail_tmo(struct device *dev,
static FC_DEVICE_ATTR(rport, fast_io_fail_tmo, S_IRUGO | S_IWUSR,
show_fc_rport_fast_io_fail_tmo, store_fc_rport_fast_io_fail_tmo);
#define fc_rport_encryption(name) \
static ssize_t fc_rport_encinfo_##name(struct device *cd, \
struct device_attribute *attr, \
char *buf) \
{ \
struct fc_rport *rport = transport_class_to_rport(cd); \
struct Scsi_Host *shost = rport_to_shost(rport); \
struct fc_internal *i = to_fc_internal(shost->transportt); \
struct fc_encryption_info *info; \
ssize_t ret = -ENOENT; \
u32 data; \
\
if (i->f->get_fc_rport_enc_info) { \
info = (i->f->get_fc_rport_enc_info)(rport); \
if (info) { \
data = info->name; \
if (!strcmp(#name, "status")) { \
ret = scnprintf(buf, \
FC_RPORT_ENCRYPTION_STATUS_MAX_LEN, \
"%s\n", \
data ? "Encrypted" : "Unencrypted"); \
} \
} \
} \
return ret; \
} \
static FC_DEVICE_ATTR(rport, encryption_##name, 0444, fc_rport_encinfo_##name, NULL) \
fc_rport_encryption(status);
static struct attribute *fc_rport_encryption_attrs[] = {
&device_attr_rport_encryption_status.attr,
NULL
};
static struct attribute_group fc_rport_encryption_group = {
.name = "encryption",
.attrs = fc_rport_encryption_attrs,
};
#define fc_rport_fpin_statistic(name) \
static ssize_t fc_rport_fpinstat_##name(struct device *cd, \
struct device_attribute *attr, \
@ -2633,6 +2673,8 @@ fc_attach_transport(struct fc_function_template *ft)
i->rport_attr_cont.ac.attrs = &i->rport_attrs[0];
i->rport_attr_cont.ac.class = &fc_rport_class.class;
i->rport_attr_cont.ac.match = fc_rport_match;
if (ft->get_fc_rport_enc_info)
i->rport_attr_cont.encryption = &fc_rport_encryption_group;
i->rport_attr_cont.statistics = &fc_rport_statistics_group;
transport_container_register(&i->rport_attr_cont);

1
include/linux/transport_class.h
View file

@ -56,6 +56,7 @@ struct anon_transport_class cls = { \
struct transport_container {
struct attribute_container ac;
const struct attribute_group *statistics;
const struct attribute_group *encryption;
};
#define attribute_container_to_transport_container(x) \

12
include/scsi/scsi_transport_fc.h
View file

@ -317,6 +317,15 @@ struct fc_fpin_stats {
u64 cn_device_specific;
};
#define FC_RPORT_ENCRYPTION_STATUS_MAX_LEN 14
/*
* Encryption Information
*/
struct fc_encryption_info {
/* Encryption Status */
u8 status;
};
/* Macro for use in defining Remote Port attributes */
#define FC_RPORT_ATTR(_name,_mode,_show,_store) \
struct device_attribute dev_attr_rport_##_name = \
@ -364,6 +373,7 @@ struct fc_rport { /* aka fc_starget_attrs */
u64 port_name;
u32 port_id;
u32 roles;
struct fc_encryption_info enc_info;
enum fc_port_state port_state; /* Will only be ONLINE or UNKNOWN */
u32 scsi_target_id;
u32 fast_io_fail_tmo;
@ -691,6 +701,8 @@ struct fc_function_template {
struct fc_host_statistics * (*get_fc_host_stats)(struct Scsi_Host *);
void (*reset_fc_host_stats)(struct Scsi_Host *);
struct fc_encryption_info * (*get_fc_rport_enc_info)(struct fc_rport *);
int (*issue_fc_host_lip)(struct Scsi_Host *);
void (*dev_loss_tmo_callbk)(struct fc_rport *);