Linux Kernel Architecture
Chapter 12: Networks also for forwarding and routing packets between systems not directly connected with each other. Finding the ...
Chapter 12: Networks ❑ versionspecifies the IP protocol version used. Currently, this field accepts the value 4 or 6. On hosts t ...
Chapter 12: Networks ihl:4; #endif __u8 tos; __u16 tot_len; __u16 id; __u16 frag_off; __u8 ttl; __u8 protocol; __u16 check; __u3 ...
Chapter 12: Networks dynamically. Hooks are present at various points inthe network subsystem, and each one has a special (label ...
Chapter 12: Networks The kernel manages the fragments of an originally composite packet in a separate cache known as a fragment ...
Chapter 12: Networks 12.8.4 Packet Forwarding IP packets may be delivered locally as described above, or they may leave the IP l ...
Chapter 12: Networks ❑ If the packet includes additional options (not normally the case), they are processed in ip_forward_optio ...
Chapter 12: Networks Fragmentation of the packet necessary? Not enough space for hardware header? ip_output ip_finish_output ip_ ...
Chapter 12: Networks Routing Routing is an important part of any IP implementation and is required not only to forward external ...
Chapter 12: Networks ❑ inputandoutputare invoked to process incoming and outgoing packets as described above. ❑ devspecifies the ...
Chapter 12: Networks Netfilter functionality can be enhanced by modules loaded into the kernel at run time. A defined rule set i ...
Chapter 12: Networks <netfilter.h> #define NF_HOOK_THRESH(pf, hook, skb, indev, outdev, okfn, thresh) \ ({int __ret; \ if ...
Chapter 12: Networks Theokfnspecified isip_forward_finish. Control is passed directly to this function if the above test establi ...
Chapter 12: Networks NPROTOspecifies the maximum number of protocol families supported by the system (currently 34). Symbolic co ...
Chapter 12: Networks NF_IP_PRI_NAT_SEQ_ADJUST = INT_MAX - 1, NF_IP_PRI_CONNTRACK_CONFIRM = INT_MAX, NF_IP_PRI_LAST = INT_MAX, }; ...
Chapter 12: Networks Overview and Innovations In 1998 a new standard named IPv6 was defined^23 and is now supported by the Linux ...
Chapter 12: Networks protocols. Changes are apparent, however, when data are passed to the IP layer. Figure 12-22 shows a (coars ...
Chapter 12: Networks Consistency check Find socket in udptable Send Destination unreachable message Yes No udp_rcv _ _udp4_lib_r ...
Chapter 12: Networks Note, however, that two data structures are used to represent sockets in the kernel.sockis the interface to ...
Chapter 12: Networks SYN SYN SYN SYN, ACK SYN ACK FIN ACK SYN, ACK ACK FIN ACK ACK FIN ACK ACK FIN ACK FIN ACK FIN Timeout Recei ...
«
36
37
38
39
40
41
42
43
44
45
»
Free download pdf