net: cosmetic: Cleanup internal packet buffer names

This patch cleans up the names of internal packet buffer names that are
used within the network stack and the functions that use them.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
diff --git a/net/ping.c b/net/ping.c
index e4e3086..7c6084c 100644
--- a/net/ping.c
+++ b/net/ping.c
@@ -50,8 +50,8 @@
 
 	net_arp_wait_packet_ip = net_ping_ip;
 
-	eth_hdr_size = NetSetEther(NetTxPacket, net_null_ethaddr, PROT_IP);
-	pkt = (uchar *)NetTxPacket + eth_hdr_size;
+	eth_hdr_size = net_set_ether(net_tx_packet, net_null_ethaddr, PROT_IP);
+	pkt = (uchar *)net_tx_packet + eth_hdr_size;
 
 	set_icmp_header(pkt, net_ping_ip);
 
@@ -106,7 +106,7 @@
 		icmph->type = ICMP_ECHO_REPLY;
 		icmph->checksum = 0;
 		icmph->checksum = compute_ip_checksum(icmph, len - IP_HDR_SIZE);
-		NetSendPacket((uchar *)et, eth_hdr_size + len);
+		net_send_packet((uchar *)et, eth_hdr_size + len);
 		return;
 /*	default:
 		return;*/