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sys/epoll.h: add epoll ioctls

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add two ioctls to get and set struct epoll_params to allow users to
control epoll based busy polling of network sockets.

added to uapi in commit 18e2bf0edf4dd88d9656ec92395aa47392e85b61 (Linux
kernel 6.9 and newer).
This commit is contained in:
Joe Damato 2024-05-29 06:49:59 +00:00 committed by Rich Felker
parent ab31e9d6a0
commit 1b97d0060b
1 changed files with 12 additions and 0 deletions
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12
include/sys/epoll.h
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@ -7,6 +7,7 @@ extern "C" {
#include <stdint.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#define __NEED_sigset_t
@ -54,6 +55,17 @@ __attribute__ ((__packed__))
#endif
;
struct epoll_params {
uint32_t busy_poll_usecs;
uint16_t busy_poll_budget;
uint8_t prefer_busy_poll;
uint8_t __pad;
};
#define EPOLL_IOC_TYPE 0x8A
#define EPIOCSPARAMS _IOW(EPOLL_IOC_TYPE, 0x01, struct epoll_params)
#define EPIOCGPARAMS _IOR(EPOLL_IOC_TYPE, 0x02, struct epoll_params)
int epoll_create(int);
int epoll_create1(int);