LU-13510 lnet: Add lnet_lnd_timeout 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 10818b4..8e7cfd8 100644 (file)
--- a/lnet/utils/lnetconfig/liblnetconfig.c
+++ b/lnet/utils/lnetconfig/liblnetconfig.c
@@ -52,6 +52,8 @@
 #include <ifaddrs.h>
 #include <rdma/rdma_user_cm.h>
 #include "liblnetconfig.h"
+#include <glob.h>
+#include <libcfs/util/param.h>
 
 #define CONFIG_CMD             "configure"
 #define UNCONFIG_CMD           "unconfigure"
@@ -3359,6 +3361,59 @@ int lustre_lnet_show_rtr_sensitivity(int seq_no, struct cYAML **show_rc,
                                       err_rc, l_errno);
 }
 
+int lustre_lnet_show_lnd_timeout(int seq_no, struct cYAML **show_rc,
+                                struct cYAML **err_rc)
+{
+       char val[LNET_MAX_STR_LEN];
+       char err_str[LNET_MAX_STR_LEN];
+       int lnd_to = -1;
+       int l_errno = 0;
+       int rc;
+       int fd;
+       glob_t path;
+
+       snprintf(err_str, sizeof(err_str), "\"out of memory\"");
+
+       rc = cfs_get_param_paths(&path, "lnet_lnd_timeout");
+       if (rc < 0) {
+               l_errno = -errno;
+               snprintf(err_str, sizeof(err_str),
+                        "\"cannot get LND timeout: %d\"", rc);
+               return build_global_yaml_entry(err_str, sizeof(err_str), seq_no,
+                                              "lnd_timeout", lnd_to, show_rc,
+                                              err_rc, l_errno);
+       }
+
+       fd = open(path.gl_pathv[0], O_RDONLY);
+       if (fd < 0) {
+               l_errno = -errno;
+               snprintf(err_str, sizeof(err_str),
+                        "\"error opening %s\"", path.gl_pathv[0]);
+               goto failed;
+       }
+
+       rc = read(fd, val, sizeof(val));
+       if (rc < 0)
+               l_errno = -errno;
+
+       close(fd);
+
+       if (rc < 0) {
+               snprintf(err_str, sizeof(err_str),
+                        "\"error reading %s\"", path.gl_pathv[0]);
+               goto failed;
+       }
+
+       lnd_to = atoi(val);
+
+failed:
+       cfs_free_param_data(&path);
+
+       return build_global_yaml_entry(err_str, sizeof(err_str), seq_no,
+                                      "lnd_timeout", lnd_to, show_rc,
+                                      err_rc, l_errno);
+}
+
 int lustre_lnet_show_transaction_to(int seq_no, struct cYAML **show_rc,
                                    struct cYAML **err_rc)
 {