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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Benjamin Marzinski <bmarzins@redhat.com>
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Date: Fri, 7 Oct 2022 12:35:42 -0500
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Subject: [PATCH] libmultipath: prepare proto_id for use by non-scsi devivces
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Make sure that when we are checking for a scsi protocol, we are first
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checking that we are working with a scsi path.
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Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
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Reviewed-by: Martin Wilck <mwilck@suse.com>
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---
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libmultipath/configure.c | 9 +++++----
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libmultipath/discovery.c | 13 ++++++++-----
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libmultipath/print.c | 6 ++++--
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libmultipath/structs.c | 2 +-
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libmultipath/structs.h | 4 +++-
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multipathd/fpin_handlers.c | 2 +-
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6 files changed, 22 insertions(+), 14 deletions(-)
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diff --git a/libmultipath/configure.c b/libmultipath/configure.c
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index 287289f7..8e1bc488 100644
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--- a/libmultipath/configure.c
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+++ b/libmultipath/configure.c
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@@ -223,10 +223,11 @@ int rr_optimize_path_order(struct pathgroup *pgp)
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total_paths = VECTOR_SIZE(pgp->paths);
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vector_foreach_slot(pgp->paths, pp, i) {
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- if (pp->sg_id.proto_id != SCSI_PROTOCOL_FCP &&
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- pp->sg_id.proto_id != SCSI_PROTOCOL_SAS &&
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- pp->sg_id.proto_id != SCSI_PROTOCOL_ISCSI &&
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- pp->sg_id.proto_id != SCSI_PROTOCOL_SRP) {
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+ if (pp->bus != SYSFS_BUS_SCSI ||
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+ (pp->sg_id.proto_id != SCSI_PROTOCOL_FCP &&
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+ pp->sg_id.proto_id != SCSI_PROTOCOL_SAS &&
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+ pp->sg_id.proto_id != SCSI_PROTOCOL_ISCSI &&
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+ pp->sg_id.proto_id != SCSI_PROTOCOL_SRP)) {
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/* return success as default path order
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* is maintained in path group
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*/
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diff --git a/libmultipath/discovery.c b/libmultipath/discovery.c
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index 36cc389e..5f4e0794 100644
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--- a/libmultipath/discovery.c
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+++ b/libmultipath/discovery.c
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@@ -468,10 +468,11 @@ int sysfs_get_host_adapter_name(const struct path *pp, char *adapter_name)
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proto_id = pp->sg_id.proto_id;
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- if (proto_id != SCSI_PROTOCOL_FCP &&
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- proto_id != SCSI_PROTOCOL_SAS &&
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- proto_id != SCSI_PROTOCOL_ISCSI &&
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- proto_id != SCSI_PROTOCOL_SRP) {
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+ if (pp->bus != SYSFS_BUS_SCSI ||
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+ (proto_id != SCSI_PROTOCOL_FCP &&
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+ proto_id != SCSI_PROTOCOL_SAS &&
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+ proto_id != SCSI_PROTOCOL_ISCSI &&
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+ proto_id != SCSI_PROTOCOL_SRP)) {
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return 1;
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}
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/* iscsi doesn't have adapter info in sysfs
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@@ -1722,8 +1723,10 @@ sysfs_pathinfo(struct path * pp, vector hwtable)
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pp->bus = SYSFS_BUS_CCISS;
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if (!strncmp(pp->dev,"dasd", 4))
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pp->bus = SYSFS_BUS_CCW;
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- if (!strncmp(pp->dev,"sd", 2))
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+ if (!strncmp(pp->dev,"sd", 2)) {
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pp->bus = SYSFS_BUS_SCSI;
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+ pp->sg_id.proto_id = SCSI_PROTOCOL_UNSPEC;
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+ }
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if (!strncmp(pp->dev,"nvme", 4))
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pp->bus = SYSFS_BUS_NVME;
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diff --git a/libmultipath/print.c b/libmultipath/print.c
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index 8a6fbe83..8a85df66 100644
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--- a/libmultipath/print.c
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+++ b/libmultipath/print.c
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@@ -558,7 +558,8 @@ snprint_host_attr (char * buff, size_t len, const struct path * pp, char *attr)
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const char *value = NULL;
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int ret;
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- if (pp->sg_id.proto_id != SCSI_PROTOCOL_FCP)
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+ if (pp->bus != SYSFS_BUS_SCSI ||
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+ pp->sg_id.proto_id != SCSI_PROTOCOL_FCP)
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return snprintf(buff, len, "[undef]");
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sprintf(host_id, "host%d", pp->sg_id.host_no);
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host_dev = udev_device_new_from_subsystem_sysname(udev, "fc_host",
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@@ -597,7 +598,8 @@ snprint_tgt_wwpn (char * buff, size_t len, const struct path * pp)
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const char *value = NULL;
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int ret;
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- if (pp->sg_id.proto_id != SCSI_PROTOCOL_FCP)
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+ if (pp->bus != SYSFS_BUS_SCSI ||
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+ pp->sg_id.proto_id != SCSI_PROTOCOL_FCP)
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return snprintf(buff, len, "[undef]");
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sprintf(rport_id, "rport-%d:%d-%d",
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pp->sg_id.host_no, pp->sg_id.channel, pp->sg_id.transport_id);
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diff --git a/libmultipath/structs.c b/libmultipath/structs.c
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index 84f9c959..1122cfae 100644
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--- a/libmultipath/structs.c
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+++ b/libmultipath/structs.c
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@@ -115,7 +115,7 @@ alloc_path (void)
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pp->sg_id.channel = -1;
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pp->sg_id.scsi_id = -1;
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pp->sg_id.lun = -1;
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- pp->sg_id.proto_id = SCSI_PROTOCOL_UNSPEC;
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+ pp->sg_id.proto_id = PROTOCOL_UNSET;
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pp->fd = -1;
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pp->tpgs = TPGS_UNDEF;
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pp->priority = PRIO_UNDEF;
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diff --git a/libmultipath/structs.h b/libmultipath/structs.h
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index 9a404da7..960ea024 100644
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--- a/libmultipath/structs.h
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+++ b/libmultipath/structs.h
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@@ -193,6 +193,8 @@ enum queue_mode_states {
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QUEUE_MODE_RQ,
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};
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+#define PROTOCOL_UNSET -1
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+
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enum scsi_protocol {
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SCSI_PROTOCOL_FCP = 0, /* Fibre Channel */
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SCSI_PROTOCOL_SPI = 1, /* parallel SCSI */
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@@ -294,7 +296,7 @@ struct sg_id {
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int lun;
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short h_cmd_per_lun;
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short d_queue_depth;
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- enum scsi_protocol proto_id;
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+ int proto_id;
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int transport_id;
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};
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diff --git a/multipathd/fpin_handlers.c b/multipathd/fpin_handlers.c
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index b14366d7..599f2893 100644
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--- a/multipathd/fpin_handlers.c
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+++ b/multipathd/fpin_handlers.c
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@@ -220,7 +220,7 @@ static int fpin_chk_wwn_setpath_marginal(uint16_t host_num, struct vectors *ve
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vector_foreach_slot(vecs->pathvec, pp, k) {
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/* Checks the host number and also for the SCSI FCP */
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- if (pp->sg_id.proto_id != SCSI_PROTOCOL_FCP || host_num != pp->sg_id.host_no)
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+ if (pp->bus != SYSFS_BUS_SCSI || pp->sg_id.proto_id != SCSI_PROTOCOL_FCP || host_num != pp->sg_id.host_no)
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continue;
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sprintf(rport_id, "rport-%d:%d-%d",
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pp->sg_id.host_no, pp->sg_id.channel, pp->sg_id.transport_id);
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