From 13bd67b4949a91df5e6696e708c935266b14c502 Mon Sep 17 00:00:00 2001 From: Josh Blum Date: Tue, 2 Mar 2010 14:48:11 -0800 Subject: The net common is too slow in usrp2 firmware to figure out if its vrt data. Added a custom function to tell if a packet is vrt data, seems to be feeding fast enough at this rate... Fixed some buffer size calculation logic. --- firmware/microblaze/lib/net_common.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'firmware/microblaze/lib/net_common.c') diff --git a/firmware/microblaze/lib/net_common.c b/firmware/microblaze/lib/net_common.c index 693502d18..ab7aadca9 100644 --- a/firmware/microblaze/lib/net_common.c +++ b/firmware/microblaze/lib/net_common.c @@ -378,6 +378,17 @@ handle_arp_packet(struct arp_eth_ipv4 *p, size_t size) } } +bool is_udp_packet_with_vrt(uint32_t *p, size_t nlines, int port){ + struct ip_hdr *ip = (struct ip_hdr *)(p + 4); + struct udp_hdr *udp = (struct udp_hdr *)(((char *)ip) + IP_HLEN); + uint32_t *payload = (uint32_t *)(((char *)udp) + UDP_HLEN); + return \ + (p[3] & 0xffff) == ETHERTYPE_IPV4 && + IPH_PROTO(ip) == IP_PROTO_UDP && + udp->dest == port && + payload[0] != 0; //must be non zero vrt header +} + void handle_eth_packet(uint32_t *p, size_t nlines) { -- cgit v1.2.3