Currently bpf_link probe is done for each call of xsk_socket__create().
For cases where xsk context was previously created and current socket
creation uses it, has_bpf_link will be overwritten, where it has already
been initialized.
Optimize this by moving the query to the xsk_create_ctx() so that when
xsk_get_ctx() finds a ctx then no further bpf_link probes are needed.
Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@xxxxxxxxx>
---
tools/testing/selftests/bpf/xsk.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/testing/selftests/bpf/xsk.c b/tools/testing/selftests/bpf/xsk.c
index eb50c3f336f8..fa13d2c44517 100644
--- a/tools/testing/selftests/bpf/xsk.c
+++ b/tools/testing/selftests/bpf/xsk.c
@@ -958,6 +958,7 @@ static struct xsk_ctx *xsk_create_ctx(struct xsk_socket *xsk,
ctx->fill = fill;
ctx->comp = comp;
list_add(&ctx->list, &umem->ctx_list);
+ ctx->has_bpf_link = xsk_probe_bpf_link();
return ctx;
}
@@ -1059,7 +1060,6 @@ int xsk_socket__create_shared(struct xsk_socket **xsk_ptr,
}
}
xsk->ctx = ctx;
- xsk->ctx->has_bpf_link = xsk_probe_bpf_link();
if (rx && !rx_setup_done) {
err = setsockopt(xsk->fd, SOL_XDP, XDP_RX_RING,
--
2.27.0
