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authoroliver@schinagl.nl <oliver@schinagl.nl>2016-11-25 15:30:20 (GMT)
committerJoe Hershberger <joe.hershberger@ni.com>2017-02-07 16:54:32 (GMT)
commit9f455bcb34fcab31b0eb8eec5702105c8d4bde18 (patch)
tree9d69ec52062805b09896a80088d121cb58dde93c /include/net.h
parenta40db6d511712f53b6663e61786a9eb825589984 (diff)
downloadu-boot-9f455bcb34fcab31b0eb8eec5702105c8d4bde18.tar.xz
net: cosmetic: Make the MAC address string less magical
In u-boot printf has been extended with the %pM formatter to allow printing of MAC addresses. However buffers that want to store a MAC address cannot safely get the size. Add a define for this case so the string of a MAC address can be reliably obtained. Signed-off-by: Olliver Schinagl <oliver@schinagl.nl> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Diffstat (limited to 'include/net.h')
-rw-r--r--include/net.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/net.h b/include/net.h
index 61568f6..c3bfb63 100644
--- a/include/net.h
+++ b/include/net.h
@@ -40,6 +40,11 @@
/* ARP hardware address length */
#define ARP_HLEN 6
+/*
+ * The size of a MAC address in string form, each digit requires two chars
+ * and five separator characters to form '00:00:00:00:00:00'.
+ */
+#define ARP_HLEN_ASCII (ARP_HLEN * 2) + (ARP_HLEN - 1)
/* IPv4 addresses are always 32 bits in size */
struct in_addr {