Porting TCP/IP Programmer’s Guide

Version 1.6

Table of Contents

About this book
Intended audience
Using this book
Typographical conventions
Further reading
Feedback on ARM TCP/IP
Feedback on this book
1. Introduction
1.1. A typical embedded networking stack
1.2. ARM TCP/IP requirements
1.2.1. Memory requirements
1.2.2. Operating system requirements
1.3. Sample package directories
1.4. Sample programs
2. TCP/IP Porting
2.1. Porting procedure
2.2. Portable and nonportable files
2.2.1. Portable files
2.2.2. Nonportable files
2.3. Creating the IP port file
2.3.1. The ipport.h file
2.3.2. Standard macros and definitions
2.3.3. CPU architecture
2.3.4. Pre-emption and protection
2.3.5. Debugging aids
2.3.6. Timers and multitasking
2.3.7. Stack features and options
2.3.8. Optional compilation switches
2.4. Coding the glue layer
2.4.1. Task control
2.4.2. TCP
2.4.3. Implementing pre-emption and protection
2.5. Specifying IP addresses
2.5.1. Porting programmer IP issues
2.5.2. End user IP issues
2.6. Testing the TCP/IP port
3. TCP/IP API Functions
3.1. User-provided TCP and IP functions
3.1.1. cksum()
3.1.2. dprintf() and initmsg()
3.1.3. dtrap()
3.1.6. npalloc()
3.1.7. npfree()
3.1.8. panic()
3.1.9. prep_ifaces()
3.1.10. tcp_sleep()
3.1.11. tcp_wakeup()
3.2. Network interfaces
3.2.1. The NET structure
3.2.2. n_close()
3.2.3. n_init()
3.2.4. n_reg_type()
3.2.5. n_stats()
3.2.6. pkt_send()
3.2.7. raw_send()
4. DHCP Client Functions
4.1. DHCP client functions
4.1.1. dhc_init()
4.1.2. dhc_discover()
4.1.3. dhc_set_callback()
4.1.4. dhc_halt()
4.1.5. dhc_second()
5. Sockets
5.1. ARM implementation of sockets
5.2. Socket API reference
5.2.1. t_accept()
5.2.2. t_bind()
5.2.3. t_connect()
5.2.4. t_errno()
5.2.5. t_getpeername()
5.2.6. t_getsockname()
5.2.7. t_getsockopt()
5.2.8. t_listen()
5.2.9. t_recv() and t_recvfrom()
5.2.10. t_select()
5.2.11. t_send() and t_sendto()
5.2.12. t_setsockopt()
5.2.13. t_shutdown()
5.2.14. t_socket()
5.2.15. t_socketclose()
6. Low-overhead UDP Functions
6.1. UDP functions
6.1.1. udp_alloc()
6.1.2. udp_close()
6.1.3. udp_free()
6.1.4. udp_open()
6.1.5. udp_send()
6.1.6. udp_socket()
7. The TCP Zero-copy API
7.1. About the TCP Zero-copy API
7.1.1. Content of the API
7.2. Sending data with the TCP Zero-copy API
7.2.1. Allocating a packet buffer
7.2.2. Filling the allocated buffer with data
7.2.3. Sending the packet
7.3. Receiving data with the TCP Zero-copy API
7.3.1. Writing a callback function
7.3.2. Registering the callback function
7.4. TCP Zero-copy API reference
7.4.1. tcp_pktalloc()
7.4.2. tcp_pktfree()
7.4.3. tcp_xout()
8. ARM-specific Functions
8.1. ARM directories
8.1.1. ARM-specific routines
8.1.2. Integrator/AP-specific routines
8.2. ARM Firmware Suite
8.2.1. Example
9. Miscellaneous Library Functions
9.1. Description of misclib files
9.1.1. app_ping.c
9.1.2. in_utils.c
9.1.3. memman.c
9.1.4. menus.c, menulib.c, and nrmenus.c
9.1.5. nextcarg.c
9.1.6. nvparms.c
9.1.7. parseip.c
9.1.8. reshost.c
9.1.9. strilib.c
9.1.10. strlib.c
9.1.11. tcp_echo.c
9.1.12. timeouts.c
9.1.13. testmenu.c
9.1.14. ttyio.c
9.1.15. udp_echo.c
9.1.16. userpass.c
9.2. in_utils.c
9.2.1. con_page()
9.2.2. hexdump()
9.2.3. nextarg()
9.2.4. ns_printf()
9.2.5. panic()
9.2.6. print_eth()
9.2.7. print_ipad()
9.2.8. print_uptime()
9.2.9. std_in()
9.2.10. std_out()
9.2.11. sysuptime()
9.2.12. uslash()
9.3. nextcarg.c
9.3.1. nextcarg()
9.4. parseip.c
9.4.1. parseip()
9.5. reshost.c
9.5.1. in_reshost()
9.6. timeouts.c
9.7. testmenu.c
9.8. userpass.c
9.8.1. add_user()
9.8.2. check_permit()
10. Internal Functions
10.1. ARP routines
10.1.1. etainit()
10.1.2. make_arp_entry()
10.1.3. arprcv()
10.2. IP routines
10.2.1. ip_write()
10.2.2. ip2mac()
10.2.3. ip_mymach()
10.2.4. iproute()
10.2.5. add_route()
10.2.6. ip_rcv()
10.2.7. parse_ipad()
10.2.8. pk_alloc()
10.2.9. pk_free()
10.3. ICMP routines
10.3.1. icmprcv()
10.3.2. icmp_destun()
10.3.3. icmpEcho()
A. Error Codes
A.1. ENP_ error codes
A.2. Socket error codes
B. Editing ARM Networking .nv Files
B.1. About the .nv files
B.2. Primary .nv file parameters
B.2.1. TCP/IP
B.2.2. DNS Client
B.2.3. B.2.3 DHCP Server
B.2.4. B.2.4 PPP
B.2.5. Modem
B.2.6. SNMP
B.2.7. Webserver
B.3. Secondary .nv file parameters
C. Sample Applications
C.1. Requirements
C.2. Building projects
C.2.1. Project files
C.2.2. Project folders
C.2.3. Cleaning up after a build
C.3. Running the examples
C.4. Descriptions of the examples
C.4.1. chargen
C.4.2. maildemo
C.4.3. menus
D. The i8255x Ethernet Driver
D.1. About the i8255x driver
D.2. Build options
D.2.1. Statistics
D.2.2. Memory architecture
D.2.3. Other tuneable values
D.3. Porting the i8255x driver
D.3.1. Driver memory allocation
D.3.2. µHAL

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Portions of source code are provided under the copyright of the respective owners, and are acknowledged in the appropriate source files:

Copyright 1998-2000 by InterNiche Technologies Inc.

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Revision History
Revision A Sept 2000First release of independent TCP/IP version (DUI 0144), without PPP information.
Revision BJune 2001Second release. Minor changes.
Copyright © 1998-2001 ARM Limited. All rights reserved.. All rights reserved.ARM DUI 0144B