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sync: auto-generate latest BPF helpers

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Latest changes to BPF helper definitions.
This commit is contained in:
Andrii Nakryiko 2021-07-16 14:30:50 -07:00 committed by Andrii Nakryiko
parent c0b2ceba1d
commit c8b1d14b03
1 changed files with 92 additions and 1 deletions
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93
src/bpf_helper_defs.h
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@ -36,6 +36,7 @@ struct btf_ptr;
struct inode;
struct socket;
struct file;
struct bpf_timer;
/*
* bpf_map_lookup_elem
@ -2094,7 +2095,7 @@ static void *(*bpf_get_local_storage)(void *map, __u64 flags) = (void *) 81;
* bpf_sk_select_reuseport
*
* Select a **SO_REUSEPORT** socket from a
* **BPF_MAP_TYPE_REUSEPORT_ARRAY** *map*.
* **BPF_MAP_TYPE_REUSEPORT_SOCKARRAY** *map*.
* It checks the selected socket is matching the incoming
* request in the socket buffer.
*
@ -3923,4 +3924,94 @@ static long (*bpf_btf_find_by_name_kind)(char *name, int name_sz, __u32 kind, in
*/
static long (*bpf_sys_close)(__u32 fd) = (void *) 168;
/*
* bpf_timer_init
*
* Initialize the timer.
* First 4 bits of *flags* specify clockid.
* Only CLOCK_MONOTONIC, CLOCK_REALTIME, CLOCK_BOOTTIME are allowed.
* All other bits of *flags* are reserved.
* The verifier will reject the program if *timer* is not from
* the same *map*.
*
* Returns
* 0 on success.
* **-EBUSY** if *timer* is already initialized.
* **-EINVAL** if invalid *flags* are passed.
* **-EPERM** if *timer* is in a map that doesn't have any user references.
* The user space should either hold a file descriptor to a map with timers
* or pin such map in bpffs. When map is unpinned or file descriptor is
* closed all timers in the map will be cancelled and freed.
*/
static long (*bpf_timer_init)(struct bpf_timer *timer, void *map, __u64 flags) = (void *) 169;
/*
* bpf_timer_set_callback
*
* Configure the timer to call *callback_fn* static function.
*
* Returns
* 0 on success.
* **-EINVAL** if *timer* was not initialized with bpf_timer_init() earlier.
* **-EPERM** if *timer* is in a map that doesn't have any user references.
* The user space should either hold a file descriptor to a map with timers
* or pin such map in bpffs. When map is unpinned or file descriptor is
* closed all timers in the map will be cancelled and freed.
*/
static long (*bpf_timer_set_callback)(struct bpf_timer *timer, void *callback_fn) = (void *) 170;
/*
* bpf_timer_start
*
* Set timer expiration N nanoseconds from the current time. The
* configured callback will be invoked in soft irq context on some cpu
* and will not repeat unless another bpf_timer_start() is made.
* In such case the next invocation can migrate to a different cpu.
* Since struct bpf_timer is a field inside map element the map
* owns the timer. The bpf_timer_set_callback() will increment refcnt
* of BPF program to make sure that callback_fn code stays valid.
* When user space reference to a map reaches zero all timers
* in a map are cancelled and corresponding program's refcnts are
* decremented. This is done to make sure that Ctrl-C of a user
* process doesn't leave any timers running. If map is pinned in
* bpffs the callback_fn can re-arm itself indefinitely.
* bpf_map_update/delete_elem() helpers and user space sys_bpf commands
* cancel and free the timer in the given map element.
* The map can contain timers that invoke callback_fn-s from different
* programs. The same callback_fn can serve different timers from
* different maps if key/value layout matches across maps.
* Every bpf_timer_set_callback() can have different callback_fn.
*
*
* Returns
* 0 on success.
* **-EINVAL** if *timer* was not initialized with bpf_timer_init() earlier
* or invalid *flags* are passed.
*/
static long (*bpf_timer_start)(struct bpf_timer *timer, __u64 nsecs, __u64 flags) = (void *) 171;
/*
* bpf_timer_cancel
*
* Cancel the timer and wait for callback_fn to finish if it was running.
*
* Returns
* 0 if the timer was not active.
* 1 if the timer was active.
* **-EINVAL** if *timer* was not initialized with bpf_timer_init() earlier.
* **-EDEADLK** if callback_fn tried to call bpf_timer_cancel() on its
* own timer which would have led to a deadlock otherwise.
*/
static long (*bpf_timer_cancel)(struct bpf_timer *timer) = (void *) 172;
/*
* bpf_get_func_ip
*
* Get address of the traced function (for tracing and kprobe programs).
*
* Returns
* Address of the traced function.
*/
static __u64 (*bpf_get_func_ip)(void *ctx) = (void *) 173;