From: Vincent Bernat <vincent@bernat.im>
Date: Thu, 15 May 2014 23:39:52 +0000 (+0200)
Subject: bsd: ensure proper alignment of BPF header
X-Git-Tag: 0.7.9~18
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=eeb66a08bdb703c8b82123cb331a1b33e73adb29;p=thirdparty%2Flldpd.git

bsd: ensure proper alignment of BPF header

This is required as per bpf(4).
---

diff --git a/src/daemon/interfaces-bpf.c b/src/daemon/interfaces-bpf.c
index 024e13c4..a56d47f4 100644
--- a/src/daemon/interfaces-bpf.c
+++ b/src/daemon/interfaces-bpf.c
@@ -21,7 +21,7 @@
 
 struct bpf_buffer {
 	size_t len;		/* Total length of the buffer */
-	char   data[0];		/* Data */
+	struct bpf_hdr data[0];
 };
 
 int
@@ -96,7 +96,7 @@ ifbpf_eth_recv(struct lldpd *cfg,
 	bh = (struct bpf_hdr*)bpfbuf->data;
 	if (bh->bh_caplen < size)
 		size = bh->bh_caplen;
-	memcpy(buffer, bpfbuf->data + bh->bh_hdrlen, size);
+	memcpy(buffer, (char *)bpfbuf->data + bh->bh_hdrlen, size);
 
 	return size;
 }