net/virtio-user: fix build on Suse 11

On some older systems, such as SUSE 11, the compiling error shows
as:
   .../dpdk/drivers/net/virtio/virtio_user/virtio_user_dev.c:67:22:
         error: ‘O_CLOEXEC’ undeclared (first use in this function)

The fix is to use EFD_CLOEXEC, which is defined in sys/eventfd.h,
instead of O_CLOEXEC which needs _GNU_SOURCE defined on some old
systems.

Fixes: 37a7eb2ae816 ("net/virtio-user: add device emulation layer")

Signed-off-by: Jianfeng Tan <jianfeng.tan@intel.com>
Acked-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>

diff --git a/drivers/net/virtio/virtio_user/virtio_user_dev.c b/drivers/net/virtio/virtio_user/virtio_user_dev.c
index 3d12a32..1b1e5bf 100644 (file)
--- a/drivers/net/virtio/virtio_user/virtio_user_dev.c
+++ b/drivers/net/virtio/virtio_user/virtio_user_dev.c
@@ -63,12 +63,12 @@ virtio_user_kick_queue(struct virtio_user_dev *dev, uint32_t queue_sel)
        /* May use invalid flag, but some backend leverages kickfd and callfd as
         * criteria to judge if dev is alive. so finally we use real event_fd.
         */
-       callfd = eventfd(0, O_CLOEXEC | O_NONBLOCK);
+       callfd = eventfd(0, EFD_CLOEXEC | EFD_NONBLOCK);
        if (callfd < 0) {
                PMD_DRV_LOG(ERR, "callfd error, %s\n", strerror(errno));
                return -1;
        }
-       kickfd = eventfd(0, O_CLOEXEC | O_NONBLOCK);
+       kickfd = eventfd(0, EFD_CLOEXEC | EFD_NONBLOCK);
        if (kickfd < 0) {
                close(callfd);
                PMD_DRV_LOG(ERR, "kickfd error, %s\n", strerror(errno));