@@ -237,6 +237,18 @@ const char *get_mpe_wwid(const struct _vector *mptable, const char *alias)
return NULL;
}
+static void
+free_pctable (vector pctable)
+{
+ int i;
+ struct pcentry *pce;
+
+ vector_foreach_slot(pctable, pce, i)
+ free(pce);
+
+ vector_free(pctable);
+}
+
void
free_hwe (struct hwentry * hwe)
{
@@ -282,6 +294,9 @@ free_hwe (struct hwentry * hwe)
if (hwe->bl_product)
free(hwe->bl_product);
+ if (hwe->pctable)
+ free_pctable(hwe->pctable);
+
free(hwe);
}
@@ -363,6 +378,15 @@ alloc_hwe (void)
return hwe;
}
+struct pcentry *
+alloc_pce (void)
+{
+ struct pcentry *pce = (struct pcentry *)
+ calloc(1, sizeof(struct pcentry));
+ pce->type = -1;
+ return pce;
+}
+
static char *
set_param_str(const char * str)
{
@@ -396,6 +420,41 @@ set_param_str(const char * str)
if (!dst->s && src->s) \
dst->s = src->s
+static void
+merge_pce(struct pcentry *dst, struct pcentry *src)
+{
+ merge_num(fast_io_fail);
+ merge_num(dev_loss);
+ merge_num(eh_deadline);
+}
+
+static int
+merge_pctable(vector d_pctable, vector s_pctable)
+{
+ struct pcentry *d_pce, *s_pce;
+ int i, j, start = 0;
+
+ vector_foreach_slot_backwards(s_pctable, s_pce, i) {
+ bool found = false;
+ j = start;
+ vector_foreach_slot_after(d_pctable, d_pce, j) {
+ if (s_pce->type != d_pce->type)
+ continue;
+ found = true;
+ merge_pce(d_pce, s_pce);
+ vector_del_slot(s_pctable, i);
+ free(s_pce);
+ break;
+ }
+ if (found)
+ continue;
+ if (!vector_insert_slot(d_pctable, 0, s_pce))
+ return 1;
+ vector_del_slot(s_pctable, i);
+ start++;
+ }
+ return 0;
+}
static void
merge_hwe (struct hwentry * dst, struct hwentry * src)
@@ -445,6 +504,13 @@ merge_hwe (struct hwentry * dst, struct hwentry * src)
merge_num(marginal_path_err_recheck_gap_time);
merge_num(marginal_path_double_failed_time);
+ if (src->pctable) {
+ if (!dst->pctable)
+ dst->pctable = steal_ptr(src->pctable);
+ else
+ merge_pctable(dst->pctable, src->pctable);
+ }
+
snprintf(id, sizeof(id), "%s/%s", dst->vendor, dst->product);
reconcile_features_with_options(id, &dst->features,
&dst->no_path_retry,
@@ -602,6 +668,41 @@ out:
return 1;
}
+static void
+factorize_pctable(struct hwentry *hwe, const char *table_desc)
+{
+ struct pcentry *pce1, *pce2;
+ int i, j;
+
+ if (!hwe->pctable)
+ return;
+
+ vector_foreach_slot(hwe->pctable, pce1, i) {
+ if (pce1->type < 0) {
+ condlog(0, "protocol section from %s:%s in %s missing type",
+ hwe->vendor, hwe->product, table_desc);
+ vector_del_slot(hwe->pctable, i--);
+ free(pce1);
+ continue;
+ }
+ j = i + 1;
+ vector_foreach_slot_after(hwe->pctable, pce2, j) {
+ if (pce1->type != pce2->type)
+ continue;
+ merge_pce(pce2,pce1);
+ vector_del_slot(hwe->pctable, i--);
+ free(pce1);
+ break;
+ }
+
+ }
+
+ if (VECTOR_SIZE(hwe->pctable) == 0) {
+ vector_free(hwe->pctable);
+ hwe->pctable = NULL;
+ }
+}
+
static void
factorize_hwtable (vector hw, int n, const char *table_desc)
{
@@ -618,6 +719,7 @@ restart:
free_hwe(hwe1);
continue;
}
+ factorize_pctable(hwe1, table_desc);
j = n > i + 1 ? n : i + 1;
vector_foreach_slot_after(hw, hwe2, j) {
if (hwe_strmatch(hwe2, hwe1) == 0) {
@@ -40,6 +40,13 @@ enum force_reload_types {
FORCE_RELOAD_WEAK,
};
+struct pcentry {
+ int type;
+ int fast_io_fail;
+ unsigned int dev_loss;
+ int eh_deadline;
+};
+
struct hwentry {
char * vendor;
char * product;
@@ -85,6 +92,8 @@ struct hwentry {
int vpd_vendor_id;
int recheck_wwid;
char * bl_product;
+
+ vector pctable;
};
struct mpentry {
@@ -284,6 +293,7 @@ const char *get_mpe_wwid (const struct _vector *mptable, const char *alias);
struct hwentry * alloc_hwe (void);
struct mpentry * alloc_mpe (void);
+struct pcentry * alloc_pce (void);
void free_hwe (struct hwentry * hwe);
void free_hwtable (vector hwtable);
@@ -417,6 +417,30 @@ snprint_mp_ ## option (struct config *conf, struct strbuf *buff, \
return function(buff, mpe->option); \
}
+#define declare_pc_handler(option, function) \
+static int \
+pc_ ## option ## _handler (struct config *conf, vector strvec, \
+ const char *file, int line_nr) \
+{ \
+ struct pcentry *pce; \
+ struct hwentry * hwe = VECTOR_LAST_SLOT(conf->hwtable); \
+ if (!hwe || !hwe->pctable) \
+ return 1; \
+ pce = VECTOR_LAST_SLOT(hwe->pctable); \
+ if (!pce) \
+ return 1; \
+ return function (strvec, &pce->option, file, line_nr); \
+}
+
+#define declare_pc_snprint(option, function) \
+static int \
+snprint_pc_ ## option (struct config *conf, struct strbuf *buff, \
+ const void *data) \
+{ \
+ const struct pcentry *pce = (const struct pcentry *)data; \
+ return function(buff, pce->option); \
+}
+
static int checkint_handler(struct config *conf, vector strvec,
const char *file, int line_nr)
{
@@ -1046,6 +1070,8 @@ declare_ovr_handler(fast_io_fail, set_undef_off_zero)
declare_ovr_snprint(fast_io_fail, print_undef_off_zero)
declare_hw_handler(fast_io_fail, set_undef_off_zero)
declare_hw_snprint(fast_io_fail, print_undef_off_zero)
+declare_pc_handler(fast_io_fail, set_undef_off_zero)
+declare_pc_snprint(fast_io_fail, print_undef_off_zero)
static int
set_dev_loss(vector strvec, void *ptr, const char *file, int line_nr)
@@ -1083,6 +1109,8 @@ declare_ovr_handler(dev_loss, set_dev_loss)
declare_ovr_snprint(dev_loss, print_dev_loss)
declare_hw_handler(dev_loss, set_dev_loss)
declare_hw_snprint(dev_loss, print_dev_loss)
+declare_pc_handler(dev_loss, set_dev_loss)
+declare_pc_snprint(dev_loss, print_dev_loss)
declare_def_handler(eh_deadline, set_undef_off_zero)
declare_def_snprint(eh_deadline, print_undef_off_zero)
@@ -1090,6 +1118,8 @@ declare_ovr_handler(eh_deadline, set_undef_off_zero)
declare_ovr_snprint(eh_deadline, print_undef_off_zero)
declare_hw_handler(eh_deadline, set_undef_off_zero)
declare_hw_snprint(eh_deadline, print_undef_off_zero)
+declare_pc_handler(eh_deadline, set_undef_off_zero)
+declare_pc_snprint(eh_deadline, print_undef_off_zero)
static int
set_pgpolicy(vector strvec, void *ptr, const char *file, int line_nr)
@@ -1897,6 +1927,68 @@ declare_mp_snprint(wwid, print_str)
declare_mp_handler(alias, set_str_noslash)
declare_mp_snprint(alias, print_str)
+
+static int
+protocol_handler(struct config *conf, vector strvec, const char *file,
+ int line_nr)
+{
+ struct pcentry *pce;
+ struct hwentry *hwe = VECTOR_LAST_SLOT(conf->hwtable);
+ if (!hwe)
+ return 1;
+
+ if (!hwe->pctable && !(hwe->pctable = vector_alloc()))
+ return 1;
+
+ if (!(pce = alloc_pce()))
+ return 1;
+
+ if (!vector_alloc_slot(hwe->pctable)) {
+ free(pce);
+ return 1;
+ }
+ vector_set_slot(hwe->pctable, pce);
+
+ return 0;
+}
+
+static int
+set_protocol_type(vector strvec, void *ptr, const char *file, int line_nr)
+{
+ int *int_ptr = (int *)ptr;
+ char *buff;
+ int i;
+
+ buff = set_value(strvec);
+
+ if (!buff)
+ return 1;
+
+ for (i = 0; i <= LAST_BUS_PROTOCOL_ID; i++) {
+ if (protocol_name[i] && !strcmp(buff, protocol_name[i])) {
+ *int_ptr = i;
+ break;
+ }
+ }
+ if (i > LAST_BUS_PROTOCOL_ID)
+ condlog(1, "%s line %d, invalid value for type: \"%s\"",
+ file, line_nr, buff);
+
+ free(buff);
+ return 0;
+}
+
+static int
+print_protocol_type(struct strbuf *buff, int type)
+{
+ if (type < 0)
+ return 0;
+ return append_strbuf_quoted(buff, protocol_name[type]);
+}
+
+declare_pc_handler(type, set_protocol_type)
+declare_pc_snprint(type, print_protocol_type)
+
/*
* deprecated handlers
*/
@@ -2096,6 +2188,13 @@ init_keywords(vector keywords)
install_keyword("all_tg_pt", &hw_all_tg_pt_handler, &snprint_hw_all_tg_pt);
install_keyword("vpd_vendor", &hw_vpd_vendor_handler, &snprint_hw_vpd_vendor);
install_keyword("recheck_wwid", &hw_recheck_wwid_handler, &snprint_hw_recheck_wwid);
+ install_keyword_multi("protocol", &protocol_handler, NULL);
+ install_sublevel();
+ install_keyword("type", &pc_type_handler, &snprint_pc_type);
+ install_keyword("fast_io_fail_tmo", &pc_fast_io_fail_handler, &snprint_pc_fast_io_fail);
+ install_keyword("dev_loss_tmo", &pc_dev_loss_handler, &snprint_pc_dev_loss);
+ install_keyword("eh_deadline", &pc_eh_deadline_handler, &snprint_pc_eh_deadline);
+ install_sublevel_end();
install_sublevel_end();
install_keyword_root("overrides", &overrides_handler);
@@ -1406,6 +1406,45 @@ int snprint_multipath_topology_json (struct strbuf *buff,
return get_strbuf_len(buff) - initial_len;
}
+static int
+snprint_pcentry (struct strbuf *buff, const struct pcentry *pce,
+ const struct keyword *rootkw)
+{
+ int i, rc;
+ struct keyword *kw;
+ size_t initial_len = get_strbuf_len(buff);
+
+ if ((rc = append_strbuf_str(buff, "\t\tprotocol {\n")) < 0)
+ return rc;
+
+ iterate_sub_keywords(rootkw, kw, i) {
+ if ((rc = snprint_keyword(buff, "\t\t\t%k %v\n", kw, pce)) < 0)
+ return rc;
+ }
+
+ if ((rc = append_strbuf_str(buff, "\t\t}\n")) < 0)
+ return rc;
+ return get_strbuf_len(buff) - initial_len;
+}
+
+static int
+snprint_pctable (const struct config *conf, struct strbuf *buff,
+ const struct _vector *pctable, const struct keyword *rootkw)
+{
+ int i, rc;
+ struct pcentry *pce;
+ size_t initial_len = get_strbuf_len(buff);
+
+ rootkw = find_keyword(conf->keywords, rootkw->sub, "protocol");
+ assert(rootkw);
+
+ vector_foreach_slot(pctable, pce, i) {
+ if ((rc = snprint_pcentry(buff, pce, rootkw)) < 0)
+ return rc;
+ }
+ return get_strbuf_len(buff) - initial_len;
+}
+
static int
snprint_hwentry (const struct config *conf,
struct strbuf *buff, const struct hwentry * hwe)
@@ -1427,6 +1466,11 @@ snprint_hwentry (const struct config *conf,
if ((rc = snprint_keyword(buff, "\t\t%k %v\n", kw, hwe)) < 0)
return rc;
}
+
+ if (hwe->pctable &&
+ (rc = snprint_pctable(conf, buff, hwe->pctable, rootkw)) < 0)
+ return rc;
+
if ((rc = append_strbuf_str(buff, "\t}\n")) < 0)
return rc;
return get_strbuf_len(buff) - initial_len;
Some storage arrays can be accessed using multiple protocols at the same time. In these cases, users may want to set path attributes differently, depending on the protocol that the path is using. To allow this, add a protocol subsection to the device subsection in multipath.conf, which allows select path-specific options to be set. This commit simply adds the subsection, and handles merging matching entries, both within a hwentry, and when hwentries are merged. Future patches will make use of the section. Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com> --- libmultipath/config.c | 102 ++++++++++++++++++++++++++++++++++++++++++ libmultipath/config.h | 10 +++++ libmultipath/dict.c | 99 ++++++++++++++++++++++++++++++++++++++++ libmultipath/print.c | 44 ++++++++++++++++++ 4 files changed, 255 insertions(+)