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@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