1 files changed, 58 insertions, 0 deletions
diff --git a/src/seastar/dpdk/lib/librte_vhost/fd_man.h b/src/seastar/dpdk/lib/librte_vhost/fd_man.h
new file mode 100644
index 000000000..3ab5cfdd6
--- /dev/null
+++ b/src/seastar/dpdk/lib/librte_vhost/fd_man.h
@@ -0,0 +1,58 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation
+ */
+
+#ifndef _FD_MAN_H_
+#define _FD_MAN_H_
+#include <stdint.h>
+#include <pthread.h>
+#include <poll.h>
+
+#define MAX_FDS 1024
+
+typedef void (*fd_cb)(int fd, void *dat, int *remove);
+
+struct fdentry {
+	int fd;		/* -1 indicates this entry is empty */
+	fd_cb rcb;	/* callback when this fd is readable. */
+	fd_cb wcb;	/* callback when this fd is writeable.*/
+	void *dat;	/* fd context */
+	int busy;	/* whether this entry is being used in cb. */
+};
+
+struct fdset {
+	struct pollfd rwfds[MAX_FDS];
+	struct fdentry fd[MAX_FDS];
+	pthread_mutex_t fd_mutex;
+	pthread_mutex_t fd_pooling_mutex;
+	int num;	/* current fd number of this fdset */
+
+	union pipefds {
+		struct {
+			int pipefd[2];
+		};
+		struct {
+			int readfd;
+			int writefd;
+		};
+	} u;
+};
+
+
+void fdset_init(struct fdset *pfdset);
+
+int fdset_add(struct fdset *pfdset, int fd,
+	fd_cb rcb, fd_cb wcb, void *dat);
+
+void *fdset_del(struct fdset *pfdset, int fd);
+int fdset_try_del(struct fdset *pfdset, int fd);
+
+void *fdset_event_dispatch(void *arg);
+
+int fdset_pipe_init(struct fdset *fdset);
+
+void fdset_pipe_uninit(struct fdset *fdset);
+
+void fdset_pipe_notify(struct fdset *fdset);
+
+#endif