[RFC bpf-next 4/5] samples/bpf/xdpsock_user.c: Make get_nsecs() generic
From: Kishen Maloor <hidden>
Date: 2021-08-03 17:10:33
Also in:
netdev
Subsystem:
bpf [general] (safe dynamic programs and tools), the rest, xdp (express data path) · Maintainers:
Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko, Eduard Zingerman, Kumar Kartikeya Dwivedi, Linus Torvalds, David S. Miller, Jakub Kicinski, Jesper Dangaard Brouer, John Fastabend
From: Jithu Joseph <redacted> The helper function get_nsecs() assumes clock to be CLOCK_MONOTONIC. TSN features like Launchtime uses CLOCK_TAI. Subsequent patch extends this sample to show how Launchtime APIs maybe used in XDP context. In prepration for this, extend the function to add CLOCKID parameter. Signed-off-by: Jithu Joseph <redacted> --- samples/bpf/xdpsock_user.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/samples/bpf/xdpsock_user.c b/samples/bpf/xdpsock_user.c
index 33d0bdebbed8..3fd2f6a0d1eb 100644
--- a/samples/bpf/xdpsock_user.c
+++ b/samples/bpf/xdpsock_user.c@@ -159,11 +159,11 @@ static int num_socks; struct xsk_socket_info *xsks[MAX_SOCKS]; int sock; -static unsigned long get_nsecs(void) +static unsigned long get_nsecs(int clockid) { struct timespec ts; - clock_gettime(CLOCK_MONOTONIC, &ts); + clock_gettime(clockid, &ts); return ts.tv_sec * 1000000000UL + ts.tv_nsec; }
@@ -354,7 +354,7 @@ static void dump_driver_stats(long dt) static void dump_stats(void) { - unsigned long now = get_nsecs(); + unsigned long now = get_nsecs(CLOCK_MONOTONIC); long dt = now - prev_time; int i;
@@ -443,7 +443,7 @@ static void dump_stats(void) static bool is_benchmark_done(void) { if (opt_duration > 0) { - unsigned long dt = (get_nsecs() - start_time); + unsigned long dt = (get_nsecs(CLOCK_MONOTONIC) - start_time); if (dt >= opt_duration) benchmark_done = true;
@@ -1683,7 +1683,7 @@ int main(int argc, char **argv) exit_with_error(ret); } - prev_time = get_nsecs(); + prev_time = get_nsecs(CLOCK_MONOTONIC); start_time = prev_time; if (opt_bench == BENCH_RXDROP)
--
2.24.3 (Apple Git-128)