On Sun, 30 Apr 2017 17:42:15 -0600
David Ahern [off-list ref] wrote:

On 4/30/17 12:04 AM, Stephen Hemminger wrote:

quoted

On Sat, 29 Apr 2017 20:48:50 -0700
David Ahern [off-list ref] wrote:
  

quoted

Kernel now supports more than 2 labels. Increase ip to
handle up to 16 labels.

Signed-off-by: David Ahern <redacted>
---
 include/utils.h | 8 ++++----
 lib/utils.c     | 2 +-
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/include/utils.h b/include/utils.h
index 8c12e1e2a60c..a69e176c260d 100644
--- a/include/utils.h
+++ b/include/utils.h

@@ -54,6 +54,9 @@ void incomplete_command(void) __attribute__((noreturn));
 #define NEXT_ARG_FWD() do { argv++; argc--; } while(0)
 #define PREV_ARG() do { argv--; argc++; } while(0)
 
+/* Maximum number of labels the mpls helpers support */
+#define MPLS_MAX_LABELS 16
+  

Why is the kernel limit not in include/uapi/ header file?
  

I believe Eric had reasons, but not sure why.

I just don't want iproute2 utilities chasing kernel values.
Would prefer either make utilities take any size, or inherit maximum from kernel headers.