TCP/IP Architecture, Design and Implementation in Linux

Name: TCP/IP Architecture, Design and Implementation in Linux
Brand: Wiley-IEEE Computer Society Press
Price: 117.99 EUR
Availability: OnlineOnly

Sameer Seth M. Ajaykumar Venkatesulu(Autor*in)

Wiley-IEEE Computer Society Press

Erschienen am 26. Januar 2009

900 Seiten

E-Book

PDF mit Adobe-DRM

Systemvoraussetzungen

978-0-470-37784-0 (ISBN)

117,99 €inkl. 7% MwSt.

Systemvoraussetzungen

für PDF mit Adobe-DRM

E-Book Einzellizenz

Als Download verfügbar

Beschreibung

Weitere Details

Weitere Ausgaben

Personen

Inhalt

Intro
TCP/IP ARCHITECTURE, DESIGN, AND IMPLEMENTATION IN LINUX
CONTENTS
Preface
Acknowledgments
1 INTRODUCTION
1.1 Overview of TCP/IP Stack
1.1.1 Moving Down the Stack
1.1.2 Moving Up the Stack
1.2 Source Code Organization for Linux 2.4.20
1.2.1 Source Code Organization for Networking Code
1.3 TCP/IP Stack and Kernel Control Paths
1.4 Linux Kernel Until Version 2.4 Is Non-preemptible
1.4.1 System Call on Linux
1.4.2 Adding New System Call
1.5 Linux Process and Thread
1.5.1 fork()
1.5.2 Thread
1.5.3 Kernel Threads
1.6 Kernel Synchronization Mechanism
1.6.1 Semaphore
1.6.2 Atomic Operations
1.6.3 Spin Lock
1.7 Application Interfaces for TCP/IP Programming
1.7.1 Server Application
1.7.2 Client Application
1.7.3 Socket Options
1.7.4 Option Values
1.8 Shutdown
1.8.1 Kernel Shutdown Implementation
1.8.2 Send Shutdown
1.8.3 Receive Shutdown
1.9 I/O
1.9.1 read()
1.9.2 write()
1.9.3 recv()
1.9.4 send()
1.9.5 select()
1.10 TCP State
1.10.1 Partial Close
1.10.2 tcpdump Output for Partial Close
1.11 Summary
2 PROTOCOL FUNDAMENTALS
2.1 TCP
2.1.1 TCP Header
2.2 TCP Options (RFC 1323)
2.2.1 mss Option
2.2.2 Window-Scaling Option
2.2.3 Timestamp Option
2.2.4 Selective Acknowledgment Option
2.3 TCP Data Flow
2.3.1 ACKing of Data Segments
2.4 Delayed Acknowledgment
2.5 Nagle's Algorithm (RFC 896)
2.6 TCP Sliding Window Protocol
2.7 Maximizing TCP Throughput
2.8 TCP Timers
2.8.1 Retransmission Timer
2.8.2 Persistent Timer
2.8.3 Keepalive Timer
2.8.4 TIME_WAIT Timer
2.9 TCP Congestion Control
2.10 TCP Performance and Reliability
2.10.1 RTTD
2.10.2 SACK/DSACK
2.10.3 Window Scaling
2.11 IP (Internet Protocol)
2.11.1 IP Header
2.12 Routing
2.13 netstat
2.14 traceroute
2.14.1 traceroute Mechanism
2.15 ICMP
2.16 ping
2.17 ARP/RARP
2.18 Summary
3 KERNEL IMPLEMENTATION OF SOCKETS
3.1 Socket Layer
3.2 VFS and Socket
3.3 Protocol Socket Registration
3.4 struct inet_protosw
3.5 Socket Organization in the Kernel
3.6 Socket
3.7 inet_create
3.7.1 Sock
3.8 Flow Diagram for Socket Call
3.9 Summary
4 KERNEL IMPLEMENTATION OF TCP CONNECTION SETUP
4.1 Connection Setup
4.1.1 Server Side Setup
4.1.2 Server Side Operations
4.2 Bind
4.2.1 Data Structures Related to Socket BIND
4.2.2 Hash Buckets for tcp Bind
4.2.3 tcp_ehash
4.2.4 tcp_listening_hash
4.2.5 tcp_bhash
4.2.6 tcp_hashinfo
4.2.7 tcp_bind_hashbucket
4.2.8 tcp_bind_bucket
4.2.9 bind()
4.2.10 sys_bind()
4.2.11 sockfd_lookup()
4.2.12 fget()
4.2.13 inet_bind()
4.2.14 tcp_v4_get_port()
4.2.15 tcp_bind_conflict()
4.3 Listen
4.3.1 sys_listen()
4.3.2 inet_listen()
4.3.3 tcp_listen_start()
4.3.4 Listen Flow
4.3.5 struct open_request
4.3.6 Accept Queue Is Full
4.3.7 Established Sockets Linked in tcp_ehash Hash Table
4.3.8 State of the Connection Request when the Three-Way Handshake Is Still Pending
4.3.9 State of the Connection Request when the Three-Way Handshake Is Completed
4.4 Connection Request Handling by Kernel
4.4.1 SYN Queue Processing
4.4.2 Accept Queue Processing
4.4.3 Flow Control for Handling a New Connection Request
4.5 Accept
4.5.1 inet_accept()
4.5.2 Linking of Inode and Socket Data Structures when the Three-Way Handshake Has Completed and Is Accepted by Application
4.5.3 Linking of VFS and Socket Data Structures in the Kernel when a New Connection Is Established
4.5.4 File Table Entry of a New Accepted Connected Socket
4.5.5 Flow Control for Accepting New Established Connections
4.6 Client Side Setup
4.6.1 Client Side Operations
4.6.2 Connect
4.6.3 tcp_v4_connect()
4.6.4 ip_route_connect()
4.6.5 Flow Control for Generating a Connection Request
4.6.6 tcp_v4_hash_connect()
4.6.7 __tcp_v4_check_established()
4.6.8 tcp_connect()
4.6.9 tcp_transmit_skb()
4.7 Summary
5 sk_buff AND PROTOCOL HEADERS
5.1 struct sk_buff
5.2 struct skb_shared_info
5.3 sk_buff and DMA-SKB_FRAG_STRUCT
5.3.1 DMA and Fragmented sk_buff Containing Paged Data
5.3.2 sk_buff and IP Fragmentation
5.3.3 sk_buff and Fragmentation
5.4 Routines Operating on sk_buff
5.4.1 alloc_skb()
5.4.2 skb_reserve()
5.4.3 skb_put()
5.4.4 skb_push()
5.4.5 skb_pull()
5.5 sk_buff Builds Protocol Headers as It Traverses Down the Protocol Layers
5.5.1 Tcp Header Is Added to sk_buff
5.5.2 Ip Header Is Added to sk_buff
5.5.3 Link Layer Header Is Added to sk_buff
5.6 sk_buff Extracts Protocol Headers as It Traverses Up the Protocol Layers When a Packet Arrives
5.6.1 sk_buff Is Made to Point to a Datalink Layer Header Which Will Be Processed by a Dalalink Driver
5.6.2 sk_buff Is Made to Point to an ip Layer Header Which Will Be Processed by an IP Layer
5.6.3 sk_buff Is Made to Point to a tcp Layer Header Which Will Be Processed by a tcp Layer
5.7 Summary
6 MOVEMENT OF sk_buff ACROSS PROTOCOL LAYERS
6.1 Packet Traversing Down the TCP/IP Stack
6.1.1 Path of Packet Traversal from Socket Layer to Device for Transmission
6.1.2 Kernel Path for TCP Packet Traversing Down the Stack
6.2 Routed Packet Ready for Transmission
6.3 Kernel Flow for a Packet Moving Down the Stack
6.4 Packet Traversing Up the TCP/IP Stack
6.4.1 Path of Packet Traversal from Device (Reception) to Socket Layer
6.4.2 Kernel Path for TCP Packet Traversing Up the Stack
6.5 Kernel Flow for a Packet Moving Up the Stack
6.6 Summary
7 TCP SEND
7.1 TCP Segmentation Unit for Sending Data
7.1.1 Functioning of Segmentation Unit without Scatter-Gather Support
7.1.2 Segmentation without Scatter-Gather Support
7.1.3 1 mss of Data Written over the Socket
7.2 Segmentation with Scatter-Gather Technique
7.2.1 Segmentation with Scatter-Gather Support
7.2.2 Application Writes Y Bytes over the Socket
7.2.3 can_coalesce()
7.2.4 tcp_copy_to_page()
7.2.5 tcp_mark_push()
7.2.6 forced_push()
7.2.7 tcp_push()
7.2.8 __tcp_push_pending_frames()
7.2.9 tcp_snd_test()
7.2.10 tcp_nagle_check()
7.2.11 tcp_minshall_ckeck()
7.2.12 tcp_write_xmit()
7.2.13 update_send_head()
7.2.14 tcp_push_one()
7.2.15 skb_entail()
7.3 Sending OOB Data
7.4 Flow for TCP Segmentation Unit and Send Process
7.5 Functional Level Flow for Segmentation and Send Mechanism
7.6 Summary
8 TCP RECEIVE
8.1 Queuing Mechanism
8.1.1 Processing in tcp_rcv_established()
8.1.2 tcp_prequeue()
8.1.3 Processing of Queues
8.1.4 tcp_data_wait()
8.1.5 tcp_prequeue_process()
8.1.6 lock_sock()
8.1.7 __lock_sock()
8.1.8 release_sock()
8.1.9 __release_sock()
8.2 Processing of TCP Data from the Receive Queue
8.2.1 cleanup_rbuf()
8.2.2 skb_copy_datagram_iovec()
8.2.3 Reading Data from Receive Buffer without Paged Data Area
8.2.4 X Bytes Requested from the Application
8.2.5 1 mss = n Bytes Requested from the Application
8.2.6 n - X Bytes Requested from the Application
8.2.7 Consumption of Data from a Paged Buffer
8.2.8 n Bytes Requested by the Application
8.2.9 One Page of Data Requested by the Application
8.3 TCP Urgent Byte Processing
8.3.1 Urgent Byte Read as OOB Data
8.3.2 tcp_recv_urg()
8.3.3 Urgent Mode Processing and Reading an Urgent Byte as Inline Data
8.4 DATA Flow Diagram for Receiving Data over the TCP Socket
8.5 Summary
9 TCP MEMORY MANAGEMENT
9.1 Transmit Side TCP Memory Management
9.1.1 select_size()
9.1.2 tcp_alloc_pskb()
9.1.3 alloc_skb()
9.1.4 tcp_alloc_page()
9.1.5 skb_charge()
9.1.6 tcp_mem_schedule()
9.1.7 tcp_free_skb()
9.1.8 sock_wfree()
9.1.9 tcp_write_space()
9.1.10 tcp_mem_reclaim()
9.1.11 __tcp_mem_reclaim()
9.1.12 wait_for_tcp_memory()
9.2 Receive Side TCP Memory Management
9.2.1 tcp_prune_queue()
9.2.2 tcp_clamp_window()
9.2.3 tcp_collapse_ofo_queue()
9.2.4 tcp_collapse()
9.2.5 __skb_queue_purge()
9.3 Freeing of Memory Allocated to a Receive Buffer
9.4 System-Wide Control Parameters Are Worth Noticing When It Comes to TCP Memory Management
9.5 Summary
10 TCP TIMERS
10.1 Timers in Linux
10.1.1 mod_timer()
10.1.2 detach_timer()
10.1.3 del_timer()
10.1.4 When Are Timer Routines Executed?
10.2 TCP Retransmit Timer
10.2.1 When Do We Set Retransmit Timer?
10.2.2 When Do We Reset or Cancel Retransmit Timers?
10.2.3 tcp_enter_loss()
10.2.4 tcp_retransmit_skb()
10.2.5 tcp_retrans_try_collapse()
10.2.6 skb_cloned()
10.3 Zero Window Probe Timer
10.3.1 When Is the First Time Probe Timer Installed?
10.3.2 When Is the Probe Timer Canceled for the Connection?
10.3.3 tcp_ack_probe()
10.3.4 How Does the Window Probe Timer Work?
10.3.5 tcp_probe_timer()
10.3.6 tcp_send_probe0()
10.3.7 tcp_write_wakeup()
10.4 Delay ACK Timer
10.4.1 When Is the ACK Scheduled?
10.4.2 How and When Is the ACK Segment Sent?
10.4.3 Quick ACK Mode
10.4.4 __tcp_ack_snd_check()
10.4.5 tcp_ack_snd_check()
10.4.6 tcp_send_delayed_ack()
10.4.7 tcp_delack_timer()
10.4.8 tcp_reset_xmit_timer()
10.4.9 tcp_write_timer()
10.4.10 tcp_clear_xmit_timer()
10.5 Keepalive Timer
10.5.1 When Is the Keepalive Timer Activated?
10.5.2 How Is the Timer Reset?
10.5.3 tcp_keepalive_timer()
10.6 SYN-ACK Timer
10.6.1 When Is the SYN-ACK Timer Activated?
10.6.2 When Is the SYN-ACK Timer Stopped?
10.6.3 tcp_synack_timer()
10.7 TIME_WAIT Timer
10.7.1 When Do We Trigger TIME_WAIT Timer?
10.7.2 tcp_time_wait()
10.7.3 tcp_tw_schedule()
10.7.4 Non-recycle Mode
10.7.5 Recycle Mode
10.7.6 tcp_twkill()
10.7.7 tcp_twcal_tick()
10.7.8 __tcp_tw_hashdance()
10.8 Summary
11 TCP CORE PROCESSING
11.1 TCP Incoming Segment Processing
11.1.1 Prediction Flags
11.1.2 Building Prediction Flags
11.1.3 Condition to Enable the Fast Path
11.1.4 When to Enable the Slow Path
11.1.5 When to Enable the Fast Path
11.1.6 Points to Remember about Prediction Flags
11.2 Fast Path Processing
11.3 Slow Path Processing
11.3.1 tcp_sequence()
11.3.2 tcp_replace_ts_recent()
11.3.3 tcp_event_data_recv()
11.3.4 tcp_incr_quickack()
11.3.5 tcp_grow_window()
11.3.6 __tcp_grow_window()
11.3.7 How Do We Calculate Window to Be Advertised?
11.3.8 tcp_receive_window()
11.3.9 __tcp_select_window()
11.3.10 tcp_space()
11.3.11 tcp_data_snd_check()
11.3.12 __tcp_data_snd_check()
11.3.13 tcp_paws_discard()
11.4 Processing of Incoming ACK
11.4.1 tcp-packets_in_flight()
11.4.2 tcp_ack_is_dubious()
11.4.3 tcp_cong_avoid()
11.4.4 tcp_ack_update_window()
11.4.5 tcp_may_update_window()
11.4.6 tcp_clean_rtx_queue()
11.5 Processing of SACK blocks
11.5.1 tcp_sacktag_write_queue()
11.6 Reordering Length
11.7 Processing TCP Urgent Pointer
11.7.1 tcp_check_urg()
11.8 Processing Data Segments in Slow Path
11.8.1 tcp_sack_new_ofo_skb()
11.8.2 tcp_sack_maybe_coalesce()
11.8.3 tcp_sack_extend()
11.8.4 tcp_ofo_queue()
11.8.5 tcp_sack_remove()
11.9 Overview of Core TCP Processing
11.10 Summary
12 TCP STATE PROCESSING
12.1 Overview of State Processing
12.2 TCP States
12.2.1 TCP_CA_CWR
12.2.2 Undoing from TCP_CA_CWR
12.3 Processing of Duplicate/Partial ACKs in Recovery State
12.3.1 tcp_remove_reno_sacks()
12.3.2 tcp_try_undo_partial()
12.4 Processing of Duplicate/Partial ACKs in Loss State
12.4.1 tcp_try_undo_loss()
12.4.2 tcp_check_sack_reneging()
12.5 Default Processing of TCP States
12.5.1 tcp_time_to_recover()
12.5.2 tcp_head_timedout()
12.5.3 tcp_try_to_open()
12.5.4 tcp_update_scoreboard()
12.5.5 tcp_xmit_retransmit_queue()
12.5.6 tcp_packet_delayed()
12.6 Processing of TCP Non-open States when ACKed Beyond tp high_seq
12.6.1 TCP_CA_Loss
12.6.2 TCP_CA_CWR
12.6.3 TCP_CA_Disorder
12.6.4 tcp_try_undo_dsack()
12.6.5 TCP_CA_Recovery
12.6.6 tcp_add_reno_sack()
12.6.7 tcp_check_reno_reordering()
12.6.8 tcp_may_undo()
12.6.9 tcp_packet_delayed()
12.6.10 tcp_undo_cwr()
12.6.11 tcp_mark_head_lost()
12.6.12 tcp_sync_left_out()
12.7 Summary
13 NETLINK SOCKETS
13.1 Introduction to Netlink Sockets
13.2 Netlink Socket Registration and Initialization at Boot Time
13.3 How Is the Kernel Netlink Socket Created?
13.4 How Is the User Netlink Socket Created?
13.5 Netlink Data Structures
13.5.1 nl_table
13.5.2 rtnetlink_link
13.6 Other Important Data Strutures
13.6.1 struct nlmsghdr
13.6.2 struct msghdr
13.7 Netlink Packet Format
13.8 Netlink Socket Example-tc Command for Adding a qdisc
13.8.1 tc Command Flow in User Space for Adding a qdisc
13.8.2 tc Command in Kernel Space
13.8.2.1 sys_sendmsg()
13.8.2.2 sock_sendmsg()
13.8.2.3 netlink_sendmsg()
13.8.2.4 netlink_unicast()
13.8.2.5 netlink_data_ready()
13.8.2.6 rtnetlink_rcv()
13.8.2.7 rtnetlink_rcv_skb()
13.8.2.8 rtnetlink_rcv_msg()
13.9 Flow Diagram for tc Command in Kernel Space
13.10 Summary
14 IP ROUTING
14.1 Routing
14.2 Policy-Based Routing
14.3 Multipathing
14.4 Record Route Options (RFC 791) and Processing by Linux Stack
14.4.1 Record Routing
14.5 Source Routing
14.5.1 Strict Record Routing
14.5.2 Loose Record Routing
14.5.3 SRR Processing Implementation
14.6 Linux Kernel Implementation of Routing Table and Caches
14.7 Routing Cache Implementation Overview
14.7.1 Routing Cache Data Structures
14.8 Managing Routing Cache
14.8.1 Routing Cache for Local Connections
14.8.2 __sk_dst_check()
14.8.3 Link Failure and Reporting to Routing Subsystem
14.8.4 dst_link_failure()
14.8.5 ipv4_link_failure()
14.8.6 dst_set_expires()
14.8.7 Routing Cache for the Incoming Packets
14.8.8 Routing Cache Timer
14.8.9 rt_periodic_timer
14.8.10 rt_may_expire()
14.8.11 dst_free()
14.8.12 __dst_free()
14.8.13 dst_destroy()
14.8.14 dst_run_gc()
14.8.15 Interface down and rt_flush_timer
14.8.16 rt_cache_flush()
14.9 Implementation Overview of Forwarding Information Base (FIB)
14.9.1 struct fib_table
14.9.2 struct fn_hash
14.9.3 struct fn_zone
14.9.4 struct fib_node
14.9.5 struct fib_info
14.9.6 struct fib_nh
14.9.7 struct fib_rule
14.10 Adding New Entry in Routing Table Using ip Command (RT Netlink Interface)
14.10.1 What Happens When the ip Command Is Run with a Route Option for Adding an Entry in Routing Table?
14.10.2 inet_rtm_newroute()
14.10.3 struct rtmsg
14.10.4 struct kern_rta
14.10.5 fn_hash_insert()
14.10.6 fn_new_zone()
14.10.7 fib_create_info()
14.10.8 fn_hash_insert()
14.11 What Happens When the ip Command Is Run with a Rule Option for Adding an Entry in the Routing Table?
14.11.1 inet_rtm_newrule()
14.11.2 FIB Initialization
14.12 FIB Traversal Flow Diagram
14.12.1 ip_route_output()
14.12.2 ip_route_output_key()
14.12.3 ip_route_output_slow()
14.12.4 ip_dev_find()
14.12.5 __in_dev_get()
14.12.6 inet_select_addr()
14.12.7 ROUTE__SCOPES
14.12.8 fib_lookup()
14.13 Summary
15 IP QUALITY OF SERVICE IN LINUX (IP QoS)
15.1 Introduction
15.2 Basic Components of Linux Traffic Control
15.3 Linux Implementation of pfifo_fast qdisc
15.4 Queueing Discipline Data Structure
15.4.1 struct Qdisc
15.4.2 struct Qdisc_ops
15.4.3 struct Qdisc_class_ops
15.4.4 struct cbq_class
15.5 tc User Program and Kernel Implementation Details
15.5.1 tc_modify_qdisc()
15.5.2 qdisc_create()
15.5.3 cbq_init()
15.5.4 qdisc_graft()
15.5.5 dev_graft_qdisc()
15.6 The tc Commands for Creating Class Hierarchy for CBQ
15.6.1 tc_ctl_tclass()
15.6.2 cbq_change_class()
15.7 Filters
15.7.1 tc_ctl_tfilter()
15.8 u32 Filter Implementation
15.8.1 u32_change()
15.9 Route Filter Implementation
15.9.1 route4_change()
15.10 Enqueue
15.10.1 cbq_enqueue()
15.10.2 cbq_classify()
15.10.3 Overview of cbq_enqueue()
15.11 Overview of Linux Implementation of CBQ
15.12 cbq_dequeue()
15.12.1 From net/dev/core.c
15.12.2 qdisc_run()
15.12.3 qdisc_restart()
15.12.4 cbq_dequeue()
15.12.5 cbq_dequeue_1()
15.12.6 cbq_dequeue_prio()
15.13 Summary
16 IP FILTER AND FIREWALL
16.1 Netfilter Hook Framework
16.2 Netfilter Hooks on IP Stack
16.2.1 Hooks for Outgoing Packets
16.2.2 Hooks for Incoming Packets
16.3 Overview of Netfilter Hooks on Linux TCP-IP Stack
16.4 Registration of Netfilter Hooks
16.5 Processing of Netfilter Hooks
16.5.1 nf_hook_slow()
16.5.2 nf_iterate()
16.5.3 struct nf_hook_ops
16.6 Compatibility Framework
16.6.1 fw_in()
16.7 Ip Chains
16.7.1 Filtering with Ipchains
16.7.2 Ipchain Chain of Rules
16.7.3 struct ip_chain
16.7.4 struct ip_fwkernel
16.7.5 struct ip_reent
16.7.6 struct ip_fw
16.7.7 Organization of Tables in Ipchains
16.8 How Is the Packet Filtered with Ipchains
16.8.1 ip_fw_check()
16.8.2 ip_rule_match()
16.9 Iptables
16.9.1 Registration of Iptables Hooks
16.10 Iptables Filter Rules and Target Organization
16.10.1 struct ipt_table
16.10.2 struct ipt_table_info
16.10.3 struct ipt_entry
16.10.4 struct ipt_entry_match
16.10.5 struct ipt_tcp
16.10.6 struct ipt_entry_target
16.10.7 struct ipt_standard_target
16.11 Organization of Filter Rules and Target for Iptables
16.12 Filtering Packets with Iptables
16.12.1 ipt_do_table()
16.12.2 IPT_MATCH_ITERATE
16.13 Summary
17 NET SOFTIRQ
17.1 Why Net SoftIRQs, and How Do We Raise Them?
17.1.1 Transmission
17.1.2 Reception
17.2 How Are SoftIRQs Are Processed, and When?
17.3 Registration of SoftIRQs
17.4 Packet Reception and Delayed Processing by Rx SoftIRQ
17.5 Processing of Net Rx SoftIRQ
17.6 Packet Transmission and SoftIRQ
17.7 Summary
18 TRANSMISSION AND RECEPTION OF PACKETS
18.1 DMA Ring Buffers for Transmission and Reception of Packets
18.2 Packet Reception Process
18.2.1 Flow of Packet Reception with DMA
18.2.2 Reception Ring Buffer
18.3 Packet Transmission Process
18.3.1 Flow of Packet Transmission with DMA
18.3.2 Transmission Ring Buffer
18.3.3 Transmission Ring Buffer
18.4 Implementation of Reception and Transmission of Packets
18.4.1 struct etrax_eth_descr
18.4.2 struct etrax_dma_descr
18.4.3 Initialization of Device
18.4.5 Initialization of DMA Transmit Ring Buffers
18.4.6 Initialization of DMA Receive Ring Buffers
18.5 Rx Interrupt for Reception of Packets
18.5.1 Rx DMA Buffer Initialized
18.5.2 e100_rx()
18.5.3 Rx Descriptors After Reception of Three Packets in DMA Buffer Before Rx Interrupt Being Raised
18.5.4 Rx Descriptors After First Packet Is Pulled Out of DMA Buffer and Given to OS in Rx Interrupt Handler
18.6 Transmission of Packets
18.6.1 e100_send_packet()
18.6.2 Tx DMA Ring Buffer Descriptor After Initialization
18.6.3 e100_hardware_send_packet()
18.6.4 There Are Two Packets in Device's DMA Tx Ring Buffer to Be Transmitted
18.6.5 e100tx_interrupt()
18.6.6 First Packet from the DMA Queue Is Transmitted and Second One Is yet to Be Transmitted
After Interrupt Is Generated, Transmitted Buffer Is Freed
18.7 Summary
19 lkcd AND DEBUGGING TCP/IP STACK
19.1 lkcd Source and Patches
19.2 Touching the Socket
19.3 Looking into the Receive Socket Buffer
19.3.1 Route Information in sk_buff
19.4 Peep into Send Socket Buffer
19.5 TCP Segmentation Unit
19.6 Send Congestion Window and ssthresh
19.7 Retransmissions and Route
19.8 Peeping into Connection Queues and SYN Queues
19.9 Routing and IP Qos lcrash Steps
19.9.1 lcrash Steps for Default Queueing Discipline in Linux (pfifo_fast)
19.10 CBQ (Class-Based) Queueing Discipline lcrash Steps
19.11 U32 Filters
19.12 Route Filters
19.13 FIB Table lcrash Output for Setting Up the Realm Using ip Command
19.14 lcrash Output for Setting Up Route Filter Using tc Command
19.15 Netlink Data Structure
19.15.1 nl_table
19.15.2 rtnetlink_link
19.16 Summary
20 NEXT EDITION
Bibliography
Index

Systemvoraussetzungen

Als PDF speichern Als Link merken