6.1-stable review patch. If anyone has any objections, please let me know.
------------------
From: Maurizio Lombardi mlombard@redhat.com
[ Upstream commit 6e0f6aa44b68335df404a2df955055f416b5f2aa ]
Fix target_parse_pr_out_transport_id() to return a string representing the transport ID in a human-readable format (e.g., naa.xxxxxxxx...) for various SCSI protocol types (SAS, FCP, SRP, SBP).
Previously, the function returned a pointer to the raw binary buffer, which was incorrectly compared against human-readable strings, causing comparisons to fail. Now, the function writes a properly formatted string into a buffer provided by the caller. The output format depends on the transport protocol:
* SAS: 64-bit identifier, "naa." prefix. * FCP: 64-bit identifier, colon separated values. * SBP: 64-bit identifier, no prefix. * SRP: 128-bit identifier, "0x" prefix. * iSCSI: IQN string.
Signed-off-by: Maurizio Lombardi mlombard@redhat.com Link: https://lore.kernel.org/r/20250714133738.11054-1-mlombard@redhat.com Reviewed-by: Dmitry Bogdanov d.bogdanov@yadro.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/target/target_core_fabric_lib.c | 63 +++++++++++++++++++------ drivers/target/target_core_internal.h | 4 +- drivers/target/target_core_pr.c | 18 +++---- 3 files changed, 60 insertions(+), 25 deletions(-)
diff --git a/drivers/target/target_core_fabric_lib.c b/drivers/target/target_core_fabric_lib.c index 6600ae44f29d..d3ab251ba049 100644 --- a/drivers/target/target_core_fabric_lib.c +++ b/drivers/target/target_core_fabric_lib.c @@ -257,11 +257,41 @@ static int iscsi_get_pr_transport_id_len( return len; }
-static char *iscsi_parse_pr_out_transport_id( +static void sas_parse_pr_out_transport_id(char *buf, char *i_str) +{ + char hex[17] = {}; + + bin2hex(hex, buf + 4, 8); + snprintf(i_str, TRANSPORT_IQN_LEN, "naa.%s", hex); +} + +static void srp_parse_pr_out_transport_id(char *buf, char *i_str) +{ + char hex[33] = {}; + + bin2hex(hex, buf + 8, 16); + snprintf(i_str, TRANSPORT_IQN_LEN, "0x%s", hex); +} + +static void fcp_parse_pr_out_transport_id(char *buf, char *i_str) +{ + snprintf(i_str, TRANSPORT_IQN_LEN, "%8phC", buf + 8); +} + +static void sbp_parse_pr_out_transport_id(char *buf, char *i_str) +{ + char hex[17] = {}; + + bin2hex(hex, buf + 8, 8); + snprintf(i_str, TRANSPORT_IQN_LEN, "%s", hex); +} + +static bool iscsi_parse_pr_out_transport_id( struct se_portal_group *se_tpg, char *buf, u32 *out_tid_len, - char **port_nexus_ptr) + char **port_nexus_ptr, + char *i_str) { char *p; int i; @@ -282,7 +312,7 @@ static char *iscsi_parse_pr_out_transport_id( if ((format_code != 0x00) && (format_code != 0x40)) { pr_err("Illegal format code: 0x%02x for iSCSI" " Initiator Transport ID\n", format_code); - return NULL; + return false; } /* * If the caller wants the TransportID Length, we set that value for the @@ -306,7 +336,7 @@ static char *iscsi_parse_pr_out_transport_id( pr_err("Unable to locate ",i,0x" separator" " for Initiator port identifier: %s\n", &buf[4]); - return NULL; + return false; } *p = '\0'; /* Terminate iSCSI Name */ p += 5; /* Skip over ",i,0x" separator */ @@ -339,7 +369,8 @@ static char *iscsi_parse_pr_out_transport_id( } else *port_nexus_ptr = NULL;
- return &buf[4]; + strscpy(i_str, &buf[4], TRANSPORT_IQN_LEN); + return true; }
int target_get_pr_transport_id_len(struct se_node_acl *nacl, @@ -387,33 +418,35 @@ int target_get_pr_transport_id(struct se_node_acl *nacl, } }
-const char *target_parse_pr_out_transport_id(struct se_portal_group *tpg, - char *buf, u32 *out_tid_len, char **port_nexus_ptr) +bool target_parse_pr_out_transport_id(struct se_portal_group *tpg, + char *buf, u32 *out_tid_len, char **port_nexus_ptr, char *i_str) { - u32 offset; - switch (tpg->proto_id) { case SCSI_PROTOCOL_SAS: /* * Assume the FORMAT CODE 00b from spc4r17, 7.5.4.7 TransportID * for initiator ports using SCSI over SAS Serial SCSI Protocol. */ - offset = 4; + sas_parse_pr_out_transport_id(buf, i_str); break; - case SCSI_PROTOCOL_SBP: case SCSI_PROTOCOL_SRP: + srp_parse_pr_out_transport_id(buf, i_str); + break; case SCSI_PROTOCOL_FCP: - offset = 8; + fcp_parse_pr_out_transport_id(buf, i_str); + break; + case SCSI_PROTOCOL_SBP: + sbp_parse_pr_out_transport_id(buf, i_str); break; case SCSI_PROTOCOL_ISCSI: return iscsi_parse_pr_out_transport_id(tpg, buf, out_tid_len, - port_nexus_ptr); + port_nexus_ptr, i_str); default: pr_err("Unknown proto_id: 0x%02x\n", tpg->proto_id); - return NULL; + return false; }
*port_nexus_ptr = NULL; *out_tid_len = 24; - return buf + offset; + return true; } diff --git a/drivers/target/target_core_internal.h b/drivers/target/target_core_internal.h index 85e35cf582e5..84a399a997d8 100644 --- a/drivers/target/target_core_internal.h +++ b/drivers/target/target_core_internal.h @@ -104,8 +104,8 @@ int target_get_pr_transport_id_len(struct se_node_acl *nacl, int target_get_pr_transport_id(struct se_node_acl *nacl, struct t10_pr_registration *pr_reg, int *format_code, unsigned char *buf); -const char *target_parse_pr_out_transport_id(struct se_portal_group *tpg, - char *buf, u32 *out_tid_len, char **port_nexus_ptr); +bool target_parse_pr_out_transport_id(struct se_portal_group *tpg, + char *buf, u32 *out_tid_len, char **port_nexus_ptr, char *i_str);
/* target_core_hba.c */ struct se_hba *core_alloc_hba(const char *, u32, u32); diff --git a/drivers/target/target_core_pr.c b/drivers/target/target_core_pr.c index a355661e8202..e0a6133bba98 100644 --- a/drivers/target/target_core_pr.c +++ b/drivers/target/target_core_pr.c @@ -1477,11 +1477,12 @@ core_scsi3_decode_spec_i_port( LIST_HEAD(tid_dest_list); struct pr_transport_id_holder *tidh_new, *tidh, *tidh_tmp; unsigned char *buf, *ptr, proto_ident; - const unsigned char *i_str = NULL; + unsigned char i_str[TRANSPORT_IQN_LEN]; char *iport_ptr = NULL, i_buf[PR_REG_ISID_ID_LEN]; sense_reason_t ret; u32 tpdl, tid_len = 0; u32 dest_rtpi = 0; + bool tid_found;
/* * Allocate a struct pr_transport_id_holder and setup the @@ -1570,9 +1571,9 @@ core_scsi3_decode_spec_i_port( dest_rtpi = tmp_lun->lun_rtpi;
iport_ptr = NULL; - i_str = target_parse_pr_out_transport_id(tmp_tpg, - ptr, &tid_len, &iport_ptr); - if (!i_str) + tid_found = target_parse_pr_out_transport_id(tmp_tpg, + ptr, &tid_len, &iport_ptr, i_str); + if (!tid_found) continue; /* * Determine if this SCSI device server requires that @@ -3152,13 +3153,14 @@ core_scsi3_emulate_pro_register_and_move(struct se_cmd *cmd, u64 res_key, struct t10_pr_registration *pr_reg, *pr_res_holder, *dest_pr_reg; struct t10_reservation *pr_tmpl = &dev->t10_pr; unsigned char *buf; - const unsigned char *initiator_str; + unsigned char initiator_str[TRANSPORT_IQN_LEN]; char *iport_ptr = NULL, i_buf[PR_REG_ISID_ID_LEN] = { }; u32 tid_len, tmp_tid_len; int new_reg = 0, type, scope, matching_iname; sense_reason_t ret; unsigned short rtpi; unsigned char proto_ident; + bool tid_found;
if (!se_sess || !se_lun) { pr_err("SPC-3 PR: se_sess || struct se_lun is NULL!\n"); @@ -3277,9 +3279,9 @@ core_scsi3_emulate_pro_register_and_move(struct se_cmd *cmd, u64 res_key, ret = TCM_INVALID_PARAMETER_LIST; goto out; } - initiator_str = target_parse_pr_out_transport_id(dest_se_tpg, - &buf[24], &tmp_tid_len, &iport_ptr); - if (!initiator_str) { + tid_found = target_parse_pr_out_transport_id(dest_se_tpg, + &buf[24], &tmp_tid_len, &iport_ptr, initiator_str); + if (!tid_found) { pr_err("SPC-3 PR REGISTER_AND_MOVE: Unable to locate" " initiator_str from Transport ID\n"); ret = TCM_INVALID_PARAMETER_LIST;