Understanding Linux Network Internals 2005 phần 7 pot
Understanding Linux Network Internals 2005 phần 7 pot
... but it is not the only function that changes state.
Figures 27- 5(a) and 27- 5(b) show a high-level description of neigh_update's internals. The flowchart is divided into different areas, each ... its memory pool).
27. 6.1. Garbage Collection
Garbage collection refers to the process of eliminating resources that are not in use anymore. Like many Linux kernel subsystems
(networking...
Understanding Linux Network Internals 2005 phần 1 pps
... 16. 17. netdevice Notification Chain
Chapter 17. Bridging: Miscellaneous Topics
Section 17. 1. User-Space Configuration Tools
Section 17. 2. Tuning via /proc Filesystem
Section 17. 3. ...
Section 17. 4. Statistics
Section 17. 5. Data Structures Featured in This Part of the Book
Section 17. 6. Functions and Variables Featured in This Part of the Book
Section 17. 7. File...
Understanding Linux Network Internals 2005 phần 2 pdf
... http://www.simpopdf.com
7. 7. Functions and Variables Featured in This Chapter
Table 7- 4 summarizes the functions, macros, structures, and variables introduced in the chapter.
Table 7- 4. Functions, macros, ... macros in Table 7- 1, as you can see in include /linux/ init.h, change depending on whether the following
symbols are defined within the scope of the file that includes include /...
Understanding Linux Network Internals 2005 phần 3 pptx
...
needed. The more the kernel network stack was enhanced and the more features that were added (in this layer and in others), the more
complex the path of a packet through the network stack became.
At ... through two wrappers shown later in this section.
Here is the function's definition from include /linux/ netdevice.h:
static inline void _ _netif_schedule(struct net_device *dev)
{...
Understanding Linux Network Internals 2005 phần 4 docx
... compared to the network& apos;s max age and the frame is dropped if it is too old. The Message Age timer runs on
nondesignated ports (i.e., the ones that receive superior BPDUs).
In a stable network ... changed how bridge and port IDs are defined. The
changes in format are shown in Figure 15 -7.
Figure 15 -7. Bridge ID and port ID changes introduced by 802.1t
Note that:
The bridge prior...
Understanding Linux Network Internals 2005 phần 5 pdf
... a route to the
10.10.1.0/24 network via the next hop gateway 100.100.100.1 and locks the PMTU to 75 0 bytes:
ip route add 10.10.1.0/24 via 100.100.100.1 mtu lock 75 0
If the PMTU you are supposed ... be set to a fairly safe, small value of 576 . This reflects the specification in RFC 79 1 that each host must be
prepared to accept packets of up to 576 octets. This restriction on packet...
Understanding Linux Network Internals 2005 phần 6 ppt
... a Linux system generates ICMP UNREACHABLE messages, and we will see in
Chapter 25 how the ICMP protocol uses err_handler.
int no_policy
This field is consulted at certain key points in the network ... no_policy is used.
The include /linux/ in.h file contains a list of L4 protocols defined as IPPROTO_XXX symbols. (For a more complete list, see the
/etc/protocols file, or RFC 170 0 and it...
Understanding Linux Network Internals 2005 phần 8 ppsx
... introduced in Chapter 27. As that chapter explained, each device
has one neigh_parms structure for each neighboring protocol that it interacts with (see Figure 27- 2 in Chapter 27) . We have also seen ... loopback IPv4 addresses
AddressesClass
10.0.0.0/81 x Class A
172 .16.0.0/16 to 172 .31.0.0/1616 x Class B
192.168.0.0/16256 x Class C
1 27. 0.0.0/8 (Loopback)1 x Class A
Figure 30-5 shows...
Understanding Linux Network Internals 2005 phần 9 ppsx
... down
The networking subsystem has to disable all the routes associated with the device. This is done by fib_sync_down, described in
Chapter 32.
When a device is enabled or re-enabled
The networking ... the network stack and how big routing tables can be, it is important to have efficiently designed routing
tables to speed up operations, particularly lookups. This chapter describes how Li...
Understanding Linux Network Internals 2005 phần 10 pdf
... breathing personality and life into potentially dry subjects.
Philip Dangler was the production editor, and Audrey Doyle was the copyeditor for Understanding Linux Network Internals. Sada Preisch
proofread ... of
network device initialization, list of
networking, list of
notification chains, list of
PCI layer, list of
protocol handlers, list of
transmission and reception, list...