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This patch removes old 'Allocator_guard' utility and replaces its use with the modern 'Constrained_ram_allocator'. The adjustment of core in this respect has the side effect of a more accurate capability accounting in core's CPU, TRACE, and RM services. In particular, the dataspace capabilities needed for core-internal allocations via the 'Sliced_heap' are accounted to the client now. The same goes for nitpicker and nic_dump as other former users of the allocator guard. Hence, the patch also touches code at the client and server sides related to these services. The only remaining user of the 'Allocator_guard' is the Intel GPU driver. As the adaptation of this component would be too invasive without testing, this patch leaves this component unchanged by keeping a copy of the 'allocator_guard.h' locally at the component. Fixes #3750
The 'nic_dump' component is a bump-in-the-wire component for the NIC service that does deep packet inspection for each passing packet and dumps the gathered information to the log. This includes information about Ethernet, ARP, IPv4, TCP, UDP, and DHCP. Basics ~~~~~~ this is an example configuration of the component showing all attributes with their default values (except config.uplink and config.downlink): ! <config uplink="uplink" ! downlink="downlink" ! time="no" ! default="default" ! eth="default" ! arp="default" ! ipv4="default" ! dhcp="default" ! udp="default" ! icmp="default" ! tcp="default" /> The values of the 'uplink' and 'downlink' attributes are used as log labels for the two NIC peers. These labels are only relevant for the readability of the log. The third attribute 'time' defines wether to print timing information or not. Furthemore, as you can see, each supported protocol has an attribute with the name of the protocol in the config tag. Each of these attributes accepts one of four possible values: * no - do not print out this protocol * name - print only the protocol name * default - print a short summary of the most important header values * all - print all available header values The 'default' attribute is useful to change the default value for protocol attributes that are not explicitely set. An example output snippet of the component might be: ! (olivia <- karl) ETH ... ARP ... time 4626 (15) ! (karl <- olivia) ETH ... ARP ... time 4639 (7) ! (olivia <- karl) ETH ... IPV4 ... TCP ... time 4644 (5) ! (karl <- olivia) ETH ... IPV4 ... TCP ... time 4660 (6) After the NIC peer labels and the traffic direction, the unfolding of the protocols and their information follows. The printing order is from the lowest to the highest networking layer. At the end of each line there is the word 'time' followed by two numbers if you have enabled timing information. The first number is the packet-arrival time (the milliseconds since 'nic_dump' was started). The second number is the time from the last packet that passed till this one (milliseconds). A comprehensive example of how to use the NIC dump can be found in the test script 'libports/run/nic_dump.run'.