peer: ensure destruction doesn't race

Completely rework peer removal to ensure peers don't jump between
contexts and create races.

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

1 files changed, 1 insertions, 0 deletions

diff --git a/src/peer.h b/src/peer.h
index 059fa64..8daa053 100644
--- a/src/peer.h
+++ b/src/peer.h
@@ -58,6 +58,7 @@ struct wireguard_peer {
 	struct list_head peer_list;
 	u64 internal_id;
 	struct napi_struct napi;
+	bool is_dead;
 };
 
 struct wireguard_peer *peer_create(struct wireguard_device *wg, const u8 public_key[NOISE_PUBLIC_KEY_LEN], const u8 preshared_key[NOISE_SYMMETRIC_KEY_LEN]);