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Below is the ip_options_build() in linux kernel 3.4, line 51 and 52: 51 if (opt->srr) 52 memcpy(iph+opt->srr+iph[opt->srr+1]-4, &daddr, 4); I understand that the two lines say, if source routing option is present, copy the destination address to the end of the option, that suggests that iph[opt->srr+1] is the length of … |
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I'm confused with the function: void * page_address(struct page *page) which (1) "convert a given page to its logical address" according to "Linux Kerenl developement 3rd edition" (2) "returns the linear address associated with the page frame" according to "understanding the linux kernel>>" (3) "returns the physical address of the … |