From c042d6776c5b2b571a4c5497c1b4f4574d5f9c71 Mon Sep 17 00:00:00 2001
From: bellard <bellard>
Date: Wed, 10 May 2006 19:21:58 +0000
Subject: [PATCH] suppressed unaligned accesses

---
 slirp/if.c    | 4 ++--
 slirp/slirp.c | 9 +++++----
 2 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/slirp/if.c b/slirp/if.c
index 2ce9a642..94132ca8 100644
--- a/slirp/if.c
+++ b/slirp/if.c
@@ -52,8 +52,8 @@ if_init()
 	if_maxlinkhdr = 40;
 #endif
 #else
-        /* 14 for ethernet + 40 */
-        if_maxlinkhdr = 14 + 40;
+        /* 2 for alignment, 14 for ethernet, 40 for TCP/IP */
+        if_maxlinkhdr = 2 + 14 + 40;
 #endif
 	if_mtu = 1500;
 	if_mru = 1500;
diff --git a/slirp/slirp.c b/slirp/slirp.c
index e88745e8..6ba753e7 100644
--- a/slirp/slirp.c
+++ b/slirp/slirp.c
@@ -610,11 +610,12 @@ void slirp_input(const uint8_t *pkt, int pkt_len)
         m = m_get();
         if (!m)
             return;
-        m->m_len = pkt_len;
-        memcpy(m->m_data, pkt, pkt_len);
+        /* Note: we add to align the IP header */
+        m->m_len = pkt_len + 2;
+        memcpy(m->m_data + 2, pkt, pkt_len);
 
-        m->m_data += ETH_HLEN;
-        m->m_len -= ETH_HLEN;
+        m->m_data += 2 + ETH_HLEN;
+        m->m_len -= 2 + ETH_HLEN;
 
         ip_input(m);
         break;
-- 
2.39.5