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authorFlorin Coras <fcoras@cisco.com>2018-09-17 22:09:02 -0700
committerDamjan Marion <dmarion@me.com>2018-09-20 10:05:48 +0000
commit0e88e851e058f4fb7cc690dbbdb19216ab360d1c (patch)
tree94b6117dfd76cc7a6da2ee344f676d7765d086e3 /src/svm/svm_fifo.h
parent008dbe109ce2714be69ffb6549a0c0198a07f7d0 (diff)
session/svm: add want_tx_event flag to fifo
Have applications use explicit flag to request events from vpp when it transmits from a full fifo. Change-Id: I687c8f050a066bd5ce739d880eaec1f286038d95 Signed-off-by: Florin Coras <fcoras@cisco.com>
Diffstat (limited to 'src/svm/svm_fifo.h')
-rw-r--r--src/svm/svm_fifo.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/src/svm/svm_fifo.h b/src/svm/svm_fifo.h
index ec32fd5f40d..1ac5b6363cd 100644
--- a/src/svm/svm_fifo.h
+++ b/src/svm/svm_fifo.h
@@ -62,6 +62,7 @@ typedef struct _svm_fifo
u32 segment_manager;
CLIB_CACHE_LINE_ALIGN_MARK (end_shared);
u32 head;
+ volatile u32 want_tx_evt; /**< producer wants nudge */
CLIB_CACHE_LINE_ALIGN_MARK (end_consumer);
/* producer */
@@ -169,6 +170,18 @@ svm_fifo_unset_event (svm_fifo_t * f)
__sync_lock_release (&f->has_event);
}
+static inline void
+svm_fifo_set_want_tx_evt (svm_fifo_t * f, u8 want_evt)
+{
+ f->want_tx_evt = want_evt;
+}
+
+static inline u8
+svm_fifo_want_tx_evt (svm_fifo_t * f)
+{
+ return f->want_tx_evt;
+}
+
svm_fifo_t *svm_fifo_create (u32 data_size_in_bytes);
void svm_fifo_free (svm_fifo_t * f);