ipsec: Record the number of packets lost from an SA
Type: feature
Gaps in the sequence numbers received on an SA indicate packets that were lost.
Gaps are identified using the anti-replay window that records the sequences seen.
Publish the number of lost packets in the stats segment at /net/ipsec/sa/lost
Signed-off-by: Neale Ranns <neale@graphiant.com>
Change-Id: I8af1c09b7b25a705e18bf82e1623b3ce19e5a74d
diff --git a/src/vlib/counter.h b/src/vlib/counter.h
index 9f56542..56701e8 100644
--- a/src/vlib/counter.h
+++ b/src/vlib/counter.h
@@ -64,6 +64,20 @@
/** The number of counters (not the number of per-thread counters) */
u32 vlib_simple_counter_n_counters (const vlib_simple_counter_main_t * cm);
+/** Pre-fetch a per-thread simple counter for the given object index */
+always_inline void
+vlib_prefetch_simple_counter (const vlib_simple_counter_main_t *cm,
+ u32 thread_index, u32 index)
+{
+ counter_t *my_counters;
+
+ /*
+ * This CPU's index is assumed to already be in cache
+ */
+ my_counters = cm->counters[thread_index];
+ clib_prefetch_store (my_counters + index);
+}
+
/** Increment a simple counter
@param cm - (vlib_simple_counter_main_t *) simple counter main pointer
@param thread_index - (u32) the current cpu index