mem: add external API to retrieve page fd

[dpdk.git] / lib / librte_eal / linuxapp / eal / eal_memalloc.c

diff --git a/lib/librte_eal/linuxapp/eal/eal_memalloc.c b/lib/librte_eal/linuxapp/eal/eal_memalloc.c
index b820989..21f8427 100644 (file)
--- a/lib/librte_eal/linuxapp/eal/eal_memalloc.c
+++ b/lib/librte_eal/linuxapp/eal/eal_memalloc.c
@@ -34,6 +34,7 @@
 #include <rte_log.h>
 #include <rte_eal_memconfig.h>
 #include <rte_eal.h>
+#include <rte_errno.h>
 #include <rte_memory.h>
 #include <rte_spinlock.h>
 
@@ -1381,7 +1382,7 @@ eal_memalloc_set_seg_fd(int list_idx, int seg_idx, int fd)
                int len = mcfg->memsegs[list_idx].memseg_arr.len;
 
                if (alloc_list(list_idx, len) < 0)
-                       return -1;
+                       return -ENOMEM;
        }
        fd_list[list_idx].fds[seg_idx] = fd;
 
@@ -1391,12 +1392,18 @@ eal_memalloc_set_seg_fd(int list_idx, int seg_idx, int fd)
 int
 eal_memalloc_get_seg_fd(int list_idx, int seg_idx)
 {
-       if (internal_config.single_file_segments)
-               return fd_list[list_idx].memseg_list_fd;
-       /* list not initialized */
-       if (fd_list[list_idx].len == 0)
-               return -1;
-       return fd_list[list_idx].fds[seg_idx];
+       int fd;
+       if (internal_config.single_file_segments) {
+               fd = fd_list[list_idx].memseg_list_fd;
+       } else if (fd_list[list_idx].len == 0) {
+               /* list not initialized */
+               fd = -1;
+       } else {
+               fd = fd_list[list_idx].fds[seg_idx];
+       }
+       if (fd < 0)
+               return -ENODEV;
+       return fd;
 }
 
 int