LU-13502 lnet: Add response tracking param to lnetctl

[fs/lustre-release.git] / lnet / utils / lnetconfig / liblnetconfig.c

diff --git a/lnet/utils/lnetconfig/liblnetconfig.c b/lnet/utils/lnetconfig/liblnetconfig.c
index f7c7929..7d81eb8 100644 (file)
--- a/lnet/utils/lnetconfig/liblnetconfig.c
+++ b/lnet/utils/lnetconfig/liblnetconfig.c
@@ -2432,6 +2432,36 @@ int lustre_lnet_config_retry_count(int count, int seq_no, struct cYAML **err_rc)
        return rc;
 }
 
+int lustre_lnet_config_response_tracking(int val, int seq_no,
+                                        struct cYAML **err_rc)
+{
+       int rc = LUSTRE_CFG_RC_NO_ERR;
+       char err_str[LNET_MAX_STR_LEN];
+       char val_str[LNET_MAX_STR_LEN];
+
+       if (val < 0 || val > 3) {
+               rc = LUSTRE_CFG_RC_BAD_PARAM;
+               snprintf(err_str, sizeof(err_str),
+                        "\"Valid values are: 0, 1, 2, or 3\"");
+       } else {
+               snprintf(err_str, sizeof(err_str), "\"success\"");
+
+               snprintf(val_str, sizeof(val_str), "%d", val);
+
+               rc = write_sysfs_file(modparam_path, "lnet_response_tracking",
+                                     val_str, 1, strlen(val_str) + 1);
+               if (rc)
+                       snprintf(err_str, sizeof(err_str),
+                                "\"cannot configure response tracking: %s\"",
+                                strerror(errno));
+       }
+
+       cYAML_build_error(rc, seq_no, ADD_CMD, "response_tracking", err_str,
+                         err_rc);
+
+       return rc;
+}
+
 int lustre_lnet_config_max_intf(int max, int seq_no, struct cYAML **err_rc)
 {
        int rc = LUSTRE_CFG_RC_NO_ERR;
@@ -3531,6 +3561,31 @@ int lustre_lnet_show_peer_ni_recovq(int seq_no, struct cYAML **show_rc,
                                   seq_no, show_rc, err_rc);
 }
 
+int lustre_lnet_show_response_tracking(int seq_no, struct cYAML **show_rc,
+                                      struct cYAML **err_rc)
+{
+       int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
+       char val[LNET_MAX_STR_LEN];
+       int rsp_tracking = -1, l_errno = 0;
+       char err_str[LNET_MAX_STR_LEN];
+
+       snprintf(err_str, sizeof(err_str), "\"out of memory\"");
+
+       rc = read_sysfs_file(modparam_path, "lnet_response_tracking", val,
+                            1, sizeof(val));
+       if (rc) {
+               l_errno = -errno;
+               snprintf(err_str, sizeof(err_str),
+                        "\"cannot get lnet_response_tracking value: %d\"", rc);
+       } else {
+               rsp_tracking = atoi(val);
+       }
+
+       return build_global_yaml_entry(err_str, sizeof(err_str), seq_no,
+                                      "response_tracking", rsp_tracking,
+                                      show_rc, err_rc, l_errno);
+}
+
 int lustre_lnet_show_max_intf(int seq_no, struct cYAML **show_rc,
                              struct cYAML **err_rc)
 {
@@ -4526,7 +4581,7 @@ static int handle_yaml_config_global_settings(struct cYAML *tree,
                                              struct cYAML **err_rc)
 {
        struct cYAML *max_intf, *numa, *discovery, *retry, *tto, *seq_no,
-                    *sen, *recov, *rsen, *drop_asym_route;
+                    *sen, *recov, *rsen, *drop_asym_route, *rsp_tracking;
        int rc = 0;
 
        seq_no = cYAML_get_object_item(tree, "seq_no");
@@ -4593,6 +4648,13 @@ static int handle_yaml_config_global_settings(struct cYAML *tree,
                                                        : -1,
                                                     err_rc);
 
+       rsp_tracking = cYAML_get_object_item(tree, "response_tracking");
+       if (rsp_tracking)
+               rc = lustre_lnet_config_response_tracking(rsp_tracking->cy_valueint,
+                                                    seq_no ? seq_no->cy_valueint
+                                                       : -1,
+                                                    err_rc);
+
        return rc;
 }
 
@@ -4640,7 +4702,7 @@ static int handle_yaml_show_global_settings(struct cYAML *tree,
                                            struct cYAML **err_rc)
 {
        struct cYAML *max_intf, *numa, *discovery, *retry, *tto, *seq_no,
-                    *sen, *recov, *rsen, *drop_asym_route;
+                    *sen, *recov, *rsen, *drop_asym_route, *rsp_tracking;
        int rc = 0;
 
        seq_no = cYAML_get_object_item(tree, "seq_no");
@@ -4698,6 +4760,13 @@ static int handle_yaml_show_global_settings(struct cYAML *tree,
                                                        : -1,
                                                     show_rc, err_rc);
 
+       rsp_tracking = cYAML_get_object_item(tree, "response_tracking");
+       if (rsp_tracking)
+               rc = lustre_lnet_show_response_tracking(seq_no ?
+                                                       seq_no->cy_valueint :
+                                                       -1,
+                                                       show_rc, err_rc);
+
        return rc;
 }