session: allow small pacer bursts
Instead of enforcing a "strict" release of data, which relies on
frequent rescheduling of sessions, allow some pacer coalescing, i.e.,
short bursts, that can minimize load on scheduler/session layer and
potentially leverage tso.
Type: improvement
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I67e38e5b8dc335bd214113b70c68c27ae92bd6da
diff --git a/src/vppinfra/clib.h b/src/vppinfra/clib.h
index 9474350..22377c6 100644
--- a/src/vppinfra/clib.h
+++ b/src/vppinfra/clib.h
@@ -332,6 +332,14 @@
_x < _y ? _x : _y; \
})
+#define clib_clamp(x,lo,hi) \
+({ \
+ __typeof__ (x) _x = (x); \
+ __typeof__ (lo) _lo = (lo); \
+ __typeof__ (hi) _hi = (hi); \
+ _x < _lo ? _lo : (_x > _hi ? _hi : _x); \
+})
+
#define clib_abs(x) \
({ \
__typeof__ (x) _x = (x); \