[PATCH 2/3] net/tap: add static assert to make sure max queues less than fd limit

[Stephen Hemminger <stephen@networkplumber.org>]

Since tap needs to pass fd's between primary and secondary process.
The number of tap queues must be less than the limit.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
 drivers/net/tap/rte_eth_tap.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/tap/rte_eth_tap.c b/drivers/net/tap/rte_eth_tap.c
index c486c6f073..a7aa034a55 100644
--- a/drivers/net/tap/rte_eth_tap.c
+++ b/drivers/net/tap/rte_eth_tap.c
@@ -20,6 +20,7 @@
 #include <rte_errno.h>
 #include <rte_cycles.h>
 
+#include <assert.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <sys/socket.h>
@@ -71,6 +72,8 @@
 #define TAP_MP_KEY "tap_mp_sync_queues"
 #define TAP_MP_REQ_START_RXTX "tap_mp_req_start_rxtx"
 
+static_assert(RTE_PMD_TAP_MAX_QUEUES <= RTE_MP_MAX_FD_NUM, "TAP max queues exceeds MP fd limit");
+
 #define TAP_IOV_DEFAULT_MAX 1024
 
 #define TAP_RX_OFFLOAD (RTE_ETH_RX_OFFLOAD_SCATTER |	\
-- 
2.45.2