Module Name: src
Committed By: christos
Date: Thu Jul 25 01:47:01 UTC 2024
Modified Files:
src/sys/net: if_wg.c
Log Message:
Add more debugging from Taylor
To generate a diff of this commit:
cvs rdiff -u -r1.89 -r1.90 src/sys/net/if_wg.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/net/if_wg.c
diff -u src/sys/net/if_wg.c:1.89 src/sys/net/if_wg.c:1.90
--- src/sys/net/if_wg.c:1.89 Wed Jul 24 20:55:53 2024
+++ src/sys/net/if_wg.c Wed Jul 24 21:47:00 2024
@@ -1,4 +1,4 @@
-/* $NetBSD: if_wg.c,v 1.89 2024/07/25 00:55:53 kre Exp $ */
+/* $NetBSD: if_wg.c,v 1.90 2024/07/25 01:47:00 christos Exp $ */
/*
* Copyright (C) Ryota Ozaki <[email protected]>
@@ -41,7 +41,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_wg.c,v 1.89 2024/07/25 00:55:53 kre Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_wg.c,v 1.90 2024/07/25 01:47:00 christos Exp $");
#ifdef _KERNEL_OPT
#include "opt_altq_enabled.h"
@@ -2660,6 +2660,12 @@ wg_handle_msg_data(struct wg_softc *wg,
KASSERT(m->m_len >= sizeof(*wgmd));
wgmd = mtod(m, struct wg_msg_data *);
+#ifdef WG_DEBUG_PACKET
+ if (wg_debug & WG_DEBUG_FLAGS_PACKET) {
+ hexdump(printf, "incoming packet", encrypted_buf,
+ encrypted_len);
+ }
+#endif
/*
* Get a buffer for the plaintext. Add WG_AUTHTAG_LEN to avoid
* a zero-length buffer (XXX). Drop if plaintext is longer
@@ -4100,6 +4106,34 @@ wg_send_data_msg(struct wg_peer *wgp, st
wgs->wgs_tkey_send, le64toh(wgmd->wgmd_counter),
padded_buf, padded_len,
NULL, 0);
+#ifdef WG_DEBUG_PACKET
+ if (wg_debug & WG_DEBUG_FLAGS_PACKET) {
+ hexdump(aprint_debug, "outgoing packet",
+ (char *)wgmd + sizeof(*wgmd), encrypted_len);
+ size_t decrypted_len = encrypted_len - WG_AUTHTAG_LEN;
+ char *decrypted_buf = kmem_intr_alloc((decrypted_len +
+ WG_AUTHTAG_LEN/*XXX*/), KM_NOSLEEP);
+ if (decrypted_buf != NULL) {
+ error = wg_algo_aead_dec(
+ 1 + decrypted_buf /* force misalignment */,
+ encrypted_len - WG_AUTHTAG_LEN /* XXX */,
+ wgs->wgs_tkey_send, le64toh(wgmd->wgmd_counter),
+ (char *)wgmd + sizeof(*wgmd), encrypted_len,
+ NULL, 0);
+ if (error) {
+ WG_DLOG("wg_algo_aead_dec failed: %d\n",
+ error);
+ }
+ if (!consttime_memequal(1 + decrypted_buf,
+ (char *)wgmd + sizeof(*wgmd),
+ decrypted_len)) {
+ WG_DLOG("wg_algo_aead_dec returned garbage\n");
+ }
+ kmem_intr_free(decrypted_buf, (decrypted_len +
+ WG_AUTHTAG_LEN/*XXX*/));
+ }
+ }
+#endif
error = wg->wg_ops->send_data_msg(wgp, n);
if (error == 0) {
