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samples/bpf: Add option to set the busy-poll budget
author
Björn Töpel
<bjorn.topel@intel.com>
Mon, 30 Nov 2020 18:52:05 +0000
(19:52 +0100)
committer
Daniel Borkmann
<daniel@iogearbox.net>
Mon, 30 Nov 2020 23:09:26 +0000
(
00:09
+0100)
Support for the SO_BUSY_POLL_BUDGET setsockopt, via the batching
option ('b').
Signed-off-by: Björn Töpel <bjorn.topel@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Magnus Karlsson <magnus.karlsson@intel.com>
Link:
https://lore.kernel.org/bpf/20201130185205.196029-11-bjorn.topel@gmail.com
samples/bpf/xdpsock_user.c
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diff --git
a/samples/bpf/xdpsock_user.c
b/samples/bpf/xdpsock_user.c
index 4622a17fafe139496245cf3803e5c70b39f9a543..036bd019e400a6da54f91e7a72cb3ba81950701b 100644
(file)
--- a/
samples/bpf/xdpsock_user.c
+++ b/
samples/bpf/xdpsock_user.c
@@
-1480,6
+1480,11
@@
static void apply_setsockopt(struct xsk_socket_info *xsk)
if (setsockopt(xsk_socket__fd(xsk->xsk), SOL_SOCKET, SO_BUSY_POLL,
(void *)&sock_opt, sizeof(sock_opt)) < 0)
exit_with_error(errno);
+
+ sock_opt = opt_batch_size;
+ if (setsockopt(xsk_socket__fd(xsk->xsk), SOL_SOCKET, SO_BUSY_POLL_BUDGET,
+ (void *)&sock_opt, sizeof(sock_opt)) < 0)
+ exit_with_error(errno);
}
int main(int argc, char **argv)