[5111] Updated dhcp4/6 developer's hook point doc

    src/bin/dhcp4/dhcp4_hooks.dox
    src/bin/dhcp6/dhcp6_hooks.dox
        replace "control-command-received" with
        "command-processed"

src/bin/dhcp4/dhcp4_hooks.dox

@@ -308,38 +308,22 @@ to the end of this list.
   expired leases will remain in the database and their recovery will
   be attempted during the next reclaim cycle.
 
-@subsection dhcpv4HooksControlCommandReceive control_command_receive
+@subsection dhcpv4HooksCommandProcessed command_processed
 
  - @b Arguments:
-   - name: @b command, type: isc::data::ConstElementPtr, direction: <b>in/out</b>
+   - name: @b name, type: std::string, direction: <b>in</b>
+   - name: @b arguments type: isc::data::ConstElementPtr, direction: <b>in</b>
    - name: @b response, type: isc::data::ConstElementPtr, direction: <b>in/out</b>
 
- - @b Description: this callout is executed when DHCPv4 server receives a
-   control command over the command channel (typically unix domain socket).
-   The "command" argument is a pointer to the parsed JSON structure
-   including command name and command arguments. If the callout implements
-   the specified command, it handles the command and creates appropriate
-   response. The response should be returned in the "response" argument.
-   In most cases, the callout which handles the command will set the next
-   step action to SKIP, to prevent the server from trying to handle the
-   command on its own and overriding the response created by the callouts.
-   A notable exception is the 'list-commands' command for which the callouts
-   should not set the next step action to SKIP. The server has a special
-   code path for this command which combines the list of commands returned
-   by the callouts with the list of commands supported by the server. If
-   the callout sets the next step action to SKIP in this case, the server
-   will only return the list of commands supported by the hook library.
-   The callout can modify the command arguments to influence the command
-   processing by the Command Manager. For example, it may freely modify
-   the configuration received in 'config-set' before it is processed by
-   the server. The SKIP action is not set in this case.
-
- - <b>Next step status</b>: if any callout sets the next step action to SKIP,
-   the server will assume that the command has been handled by the callouts
-   and will expect that the response is provided in the "response" argument.
-   The server will not handle the command in this case but simply return the
-   response returned by the callout to the caller.
+ - @b Description: this callout is executed after the DHCPv4 server receives
+   and processes a control command over the command channel (typically unix domain socket).
+   The "name" argument is the name of the command processed.
+   The "arguments" argument is a pointer to the parsed JSON structure
+   containing the command's input arguments.  The "response" argument
+   is the parsed JSON stucture containing the response generated by
+   the command processing.
 
+ - <b>Next step status</b>: Not applicable, it's value will be ignored.
 
 @section dhcpv4HooksOptionsAccess Accessing DHCPv4 Options within a Packet
 When the server constructs a response message to a client it includes

src/bin/dhcp6/dhcp6_hooks.dox

@@ -350,38 +350,22 @@ to the end of this list.
   expired leases will remain in the database and their recovery will
   be attempted during the next reclaim cycle.
 
-@subsection dhcpv6HooksControlCommandReceive control_command_receive
+@subsection dhcpv6HooksCommandProcessed command_processed
 
  - @b Arguments:
-   - name: @b command, type: ConstElementPtr, direction: <b>in/out</b>
-   - name: @b response, type: ConstElementPtr, direction: <b>in/out</b>
-
- - @b Description: this callout is executed when DHCPv4 server receives a
-   control command over the command channel (typically unix domain socket).
-   The "command" argument is a pointer to the parsed JSON structure
-   including command name and command arguments. If the callout implements
-   the specified command, it handles the command and creates appropriate
-   response. The response should be returned in the "response" argument.
-   In most cases, the callout which handles the command will set the next
-   step action to SKIP, to prevent the server from trying to handle the
-   command on its own and overriding the response created by the callouts.
-   A notable exception is the 'list-commands' command for which the callouts
-   should not set the next step action to SKIP. The server has a special
-   code path for this command which combines the list of commands returned
-   by the callouts with the list of commands supported by the server. If
-   the callout sets the next step action to SKIP in this case, the server
-   will only return the list of commands supported by the hook library.
-   The callout can modify the command arguments to influence the command
-   processing by the Command Manager. For example, it may freely modify
-   the configuration received in 'config-set' before it is processed by
-   the server. The SKIP action is not set in this case.
-
- - <b>Next step status</b>: if any callout sets the next step action to SKIP,
-   the server will assume that the command has been handled by the callouts
-   and will expect that the response is provided in the "response" argument.
-   The server will not handle the command in this case but simply return the
-   response returned by the callout to the caller.
-
+   - name: @b name, type: std::string, direction: <b>in</b>
+   - name: @b arguments type: isc::data::ConstElementPtr, direction: <b>in</b>
+   - name: @b response, type: isc::data::ConstElementPtr, direction: <b>in/out</b>
+
+ - @b Description: this callout is executed after the DHCPv6 server receives
+   and processes a control command over the command channel (typically unix domain socket).
+   The "name" argument is the name of the command processed.
+   The "arguments" argument is a pointer to the parsed JSON structure
+   containing the command's input arguments.  The "response" argument
+   is the parsed JSON stucture containing the response generated by
+   the command processing.
+
+ - <b>Next step status</b>: Not applicable, it's value will be ignored.
 
 @section dhcpv6HooksOptionsAccess Accessing DHCPv6 Options within a Packet
 When the server constructs a response message to a client it includes