[U-Boot] [PATCH 2/2] net: increase maximum frame size to accomediate VLAN packets

[Stefan Agner]

Ethernet packages with IEEE 802.1Q VLAN support may be up to 1522
bytes long. Increase the default size used to allocate packet
storage by 4 bytes. While at it, let git care about history and
rewrite the comment to represent the situation today only.

Signed-off-by: Stefan Agner <stefan at agner.ch>
---

 include/net.h | 16 +++++-----------
 1 file changed, 5 insertions(+), 11 deletions(-)

diff --git a/include/net.h b/include/net.h
index 1fb4194..05800c4 100644
--- a/include/net.h
+++ b/include/net.h
@@ -465,20 +465,14 @@ struct icmp_hdr {
 #define IP_ICMP_HDR_SIZE	(IP_HDR_SIZE + ICMP_HDR_SIZE)
 
 /*
- * Maximum packet size; used to allocate packet storage.
- * TFTP packets can be 524 bytes + IP header + ethernet header.
- * Lets be conservative, and go for 38 * 16.  (Must also be
- * a multiple of 32 bytes).
- */
-/*
- * AS.HARNOIS : Better to set PKTSIZE to maximum size because
- * traffic type is not always controlled
- * maximum packet size =  1518
+ * Maximum packet size; used to allocate packet storage. Use
+ * the maxium Ethernet frame size as specified by the Ethernet
+ * standard including the 802.1Q tag (VLAN tagging).
+ * maximum packet size =  1522
  * maximum packet size and multiple of 32 bytes =  1536
  */
-#define PKTSIZE			1518
+#define PKTSIZE			1522
 #define PKTSIZE_ALIGN		1536
-/*#define PKTSIZE		608*/
 
 /*
  * Maximum receive ring size; that is, the number of packets
-- 
2.8.0