By Thomas Herbert
Take an in depth journey of the Linux TCP/IP Stack!
The Linux TCP/IP Stack: Networking for Embedded platforms offers an in-depth consultant to imposing and utilizing the Linux TCP/IP stack in embedded structures initiatives. It starts with a normal evaluate of TCP/IP networking, with history info on acceptable networking criteria. From there, it information the TCP/IP implementation in Linux 2.6 by way of following a packet of information because it flows throughout the stack from the sending procedure, out the cord, and again during the enter facet of the stack within the receiving computing device. This new angle offers programmers an "inside" examine the whole technique.
Throughout the textual content, themes of specific curiosity to engineers imposing embedded platforms are mentioned, reminiscent of sockets, community interfaces, software layer protocols, and functional concerns. it is a nice source for embedded structures programmers and engineers, in addition to networking execs drawn to studying extra concerning the implementation of Linux TCP/IP within the 2.6 kernel.
KEY gains * Discusses key issues for embedded structures reminiscent of real-time specifications, the Linux IPv6 implementation, and the way Linux TCP/IP is interfaced to assorted drivers and protocols * offers embedded structures engineers, protocol writers, community equipment motive force writers, and others attracted to Linux networking with an in-depth consultant to how TCP/IP works * solutions precise networking questions through concentrating on the inner operations and constitution of the Linux TCP/IP stack—not simply functions programming
On the CD! * Linux resources - comprises the assets mentioned within the ebook from the 2.6.0-test10 revision of the Linux kernel * Requests for remark (RFCs) - comprises copies of all of the RFCs which are referenced within the e-book
SYSTEM requisites workstation and home windows: CD-ROM force; home windows ninety eight or later; Cygwin is usually recommended; community interface; sixty four MB RAM, 60 MB of disk house; mouse or suitable pointing equipment; internet browser; computer screen; a textual content and programming editor is usually recommended for looking the resource records within the e-book; Linux: For x86 architectures; crimson Hat 7.0 or later or suitable Linux distribution; CD-ROM force.
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Additional info for The Linux TCP/IP Stack: Networking for Embedded Systems
2 Address Resolution Protocol The Address Resolution Protocol (ARP) is sometimes thought of as being in the link layer, but for the purposes of this explanation, it will be placed in the network layer alongside IP. The purpose of ARP is to determine what the physical destination address should be that corresponds to the destination IP address. As we will see later in Chapter 4, the IP layer hands over its packet to the interface driver when the IP portion of the header is complete, but IP has no way of knowing the physical transmission details needed to determine the hardware address.
When using the TCP/IP protocol suite, users must use the TCP transport when they want to have a reliable stream-oriented or connection-oriented delivery. The window size, sequence number, and acknowledgment number fields are used to implement TCP’s version of sliding windows. TCP divides the data stream into segments. The sequence number and acknowledgment number fields are byte pointers that keep track of the position of the segments within the data stream. The flag bits are used to maintain the state of the connection.
6, [Rubini00a] has a good discussion of how to implement kernel modules. The network driver initialization function sets up the driver’s internal data structures, the driver is introduced to the Linux kernel, and the send and receive queues are connected to the TCP/IP stack. The main driver structure is the net_device structure.