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-rw-r--r--extras/libmemif/src/libmemif.h3
-rw-r--r--extras/libmemif/src/main.c16
2 files changed, 15 insertions, 4 deletions
diff --git a/extras/libmemif/src/libmemif.h b/extras/libmemif/src/libmemif.h
index 244c3fe2b72..66006f37f79 100644
--- a/extras/libmemif/src/libmemif.h
+++ b/extras/libmemif/src/libmemif.h
@@ -669,6 +669,9 @@ int memif_tx_burst (memif_conn_handle_t conn, uint16_t qid,
@param count - number of memif buffers to receive
@param rx - returns number of received buffers
+ Consume interrupt event for receive queue.
+ The event is not consumed, if memif_rx_burst fails.
+
\return memif_err_t
*/
int memif_rx_burst (memif_conn_handle_t conn, uint16_t qid,
diff --git a/extras/libmemif/src/main.c b/extras/libmemif/src/main.c
index 0c4adc256a2..b80dd6481b8 100644
--- a/extras/libmemif/src/main.c
+++ b/extras/libmemif/src/main.c
@@ -2506,14 +2506,18 @@ memif_rx_burst (memif_conn_handle_t conn, uint16_t qid,
*rx = 0;
uint64_t b;
- ssize_t r = read (mq->int_fd, &b, sizeof (b));
- if (EXPECT_FALSE ((r == -1) && (errno != EAGAIN)))
- return memif_syscall_error_handler (errno);
+ ssize_t r;
cur_slot = (c->args.is_master) ? mq->last_head : mq->last_tail;
last_slot = (c->args.is_master) ? ring->head : ring->tail;
if (cur_slot == last_slot)
- return MEMIF_ERR_SUCCESS;
+ {
+ r = read (mq->int_fd, &b, sizeof (b));
+ if (EXPECT_FALSE ((r == -1) && (errno != EAGAIN)))
+ return memif_syscall_error_handler (errno);
+
+ return MEMIF_ERR_SUCCESS;
+ }
ns = last_slot - cur_slot;
@@ -2562,6 +2566,10 @@ memif_rx_burst (memif_conn_handle_t conn, uint16_t qid,
return MEMIF_ERR_NOBUF;
}
+ r = read (mq->int_fd, &b, sizeof (b));
+ if (EXPECT_FALSE ((r == -1) && (errno != EAGAIN)))
+ return memif_syscall_error_handler (errno);
+
return MEMIF_ERR_SUCCESS; /* 0 */
}