tools: Use seqpacket instead of dgram

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/src/uapi.h b/src/uapi.h
index c701de3..01dba48 100644
--- a/src/uapi.h
+++ b/src/uapi.h
@@ -129,4 +129,20 @@ struct wgdevice {
 	};
 };
 
+/* These are simply for convenience in iterating. It allows you to write something like:
+ *
+ *    for_each_wgpeer(device, peer, i) {
+ *        for_each_wgipmask(peer, ipmask, j) {
+ *            do_something_with_ipmask(ipmask);
+ *        }
+ *     }
+ */
+#define for_each_wgpeer(__dev, __peer, __i) for ((__i) = 0, (__peer) = (typeof(__peer))((uint8_t *)(__dev) + sizeof(struct wgdevice)); \
+						 (__i) < (__dev)->num_peers; \
+						 ++(__i), (__peer) = (typeof(__peer))((uint8_t *)(__peer) + sizeof(struct wgpeer) + (sizeof(struct wgipmask) * (__peer)->num_ipmasks)))
+
+#define for_each_wgipmask(__peer, __ipmask, __i) for ((__i) = 0, (__ipmask) = (typeof(__ipmask))((uint8_t *)(__peer) + sizeof(struct wgpeer)); \
+						 (__i) < (__peer)->num_ipmasks; \
+						 ++(__i), (__ipmask) = (typeof(__ipmask))((uint8_t *)(__ipmask) + sizeof(struct wgipmask)))
+
 #endif