On 5/21/21 12:45 AM, Song Liu wrote:
>> On May 19, 2021, at 7:13 AM, Pavel Begunkov <asml.silence@xxxxxxxxx> wrote:
>>
>> [de]register BPF programs through io_uring_register() with new
>> IORING_ATTACH_BPF and IORING_DETACH_BPF commands.
>>
>> Signed-off-by: Pavel Begunkov <asml.silence@xxxxxxxxx>
>> ---
>> fs/io_uring.c | 81 +++++++++++++++++++++++++++++++++++
>> include/uapi/linux/io_uring.h | 2 +
>> 2 files changed, 83 insertions(+)
>>
>> diff --git a/fs/io_uring.c b/fs/io_uring.c
>> index 882b16b5e5eb..b13cbcd5c47b 100644
>> --- a/fs/io_uring.c
>> +++ b/fs/io_uring.c
>> @@ -78,6 +78,7 @@
>> #include <linux/task_work.h>
>> #include <linux/pagemap.h>
>> #include <linux/io_uring.h>
>> +#include <linux/bpf.h>
>>
>> #define CREATE_TRACE_POINTS
>> #include <trace/events/io_uring.h>
>> @@ -103,6 +104,8 @@
>> #define IORING_MAX_RESTRICTIONS (IORING_RESTRICTION_LAST + \
>> IORING_REGISTER_LAST + IORING_OP_LAST)
>>
>> +#define IORING_MAX_BPF_PROGS 100
>
> Is 100 a realistic number here?
Arbitrary test value, will update
>
>> +
>> #define SQE_VALID_FLAGS (IOSQE_FIXED_FILE|IOSQE_IO_DRAIN|IOSQE_IO_LINK| \
>> IOSQE_IO_HARDLINK | IOSQE_ASYNC | \
>> IOSQE_BUFFER_SELECT)
>> @@ -266,6 +269,10 @@ struct io_restriction {
>> bool registered;
>> };
>>
>
> [...]
>
--
Pavel Begunkov
