UDP is the same over IPv4 as it is over other protocols (i.e. IPv6) add
a definition of just the UDP header independent of the IPv4 header that
it may or may not be combined with.
Signed-off-by: Chris Packham <judge.pack...@gmail.com>
---
Ideally struct ip_udp_hdr would be defined as
struct ip_udp_hdr {
struct ip_hdr ip;
struct udp_hdr udp;
};
Implementing this touches more code that I really want to at this
point. Some of the code that currently uses struct ip_udp_hdr could
probably just use struct ip_hdr instead but some care would need to be
taken to much such a change.
Changes in v2: None
include/net.h | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/include/net.h b/include/net.h
index ebed29a..e8bd2b7 100644
--- a/include/net.h
+++ b/include/net.h
@@ -348,6 +348,18 @@ struct ip_hdr {
#define IP_HDR_SIZE (sizeof(struct ip_hdr))
/*
+ * UDP header.
+ */
+struct udp_hdr {
+ __be16 udp_src; /* UDP source port */
+ __be16 udp_dst; /* UDP destination port */
+ __be16 udp_len; /* Length of UDP packet */
+ __be16 udp_xsum; /* Checksum */
+};
+
+#define UDP_HDR_SIZE (sizeof(struct udp_hdr))
+
+/*
* Internet Protocol (IP) + UDP header.
*/
struct ip_udp_hdr {
@@ -368,7 +380,6 @@ struct ip_udp_hdr {
};
#define IP_UDP_HDR_SIZE (sizeof(struct ip_udp_hdr))
-#define UDP_HDR_SIZE (IP_UDP_HDR_SIZE - IP_HDR_SIZE)
/*
* Address Resolution Protocol (ARP) header.
--
2.5.3
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