Good morning every one, I''m a new XEN developer I''ve seen that changing vif rate is not possible dynamically. I decided to change the code so it would be possible the change it dynamically the code change will affect this file "DOM0/drivers/xen/netback/xenbus.c" for the moment the rate is fixed inside the connect function static void connect(struct backend_info *be) { ... if (err) { xenbus_dev_fatal(dev, err, "parsing %s/mac", dev->nodename); return; } xen_net_read_rate(dev, &be->netif->credit_bytes, &be->netif->credit_usec); be->netif->remaining_credit = be->netif->credit_bytes; ... I want to add a function that read the rate dynamically from a /proc file but to change rate i need to have a pointer to the backend_info struct i found in xen XEN/tools/blktap/lib/xenbus.c a function that return backend_info struct pointer from backendpath static struct backend_info *be_lookup_be(const char *bepath) { struct backend_info *be; list_for_each_entry(be, &belist, list) if (strcmp(bepath, be->backpath) == 0) return be; return (struct backend_info *)NULL; } but don''t reallt know how to use it. so my questions are : 1- is it a good way to send new rate values from proc file ? 2- is it possible to use the function be_lookup_be(implimented in xen tool code) in dom0 code to find backend_info from backendpath ? 3- if the ansower of 2 is yes witch format the backendpath is exemple form vif1.3, is the backedpath like this "backend/vif/0/3" ? thanks in advance for an respoonse concerning any question. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Good morning every one, I''m a new XEN developer I''ve seen that changing vif rate is not possible dynamically. I decided to change the code so it would be possible the change it dynamically the code change will affect this file "DOM0/drivers/xen/netback/xenbus.c" for the moment the rate is fixed inside the connect function static void connect(struct backend_info *be) { ... if (err) { xenbus_dev_fatal(dev, err, "parsing %s/mac", dev->nodename); return; } xen_net_read_rate(dev, &be->netif->credit_bytes, &be->netif->credit_usec); be->netif->remaining_credit = be->netif->credit_bytes; ... I want to add a function that read the rate dynamically from a /proc file but to change rate i need to have a pointer to the backend_info struct i found in xen XEN/tools/blktap/lib/xenbus.c a function that return backend_info struct pointer from backendpath static struct backend_info *be_lookup_be(const char *bepath) { struct backend_info *be; list_for_each_entry(be, &belist, list) if (strcmp(bepath, be->backpath) == 0) return be; return (struct backend_info *)NULL; } but don''t reallt know how to use it. so my questions are : 1- is it a good way to send new rate values from proc file ? 2- is it possible to use the function be_lookup_be(implimented in xen tool code) in dom0 code to find backend_info from backendpath ? 3- if the ansower of 2 is yes witch format the backendpath is exemple form vif1.3, is the backedpath like this "backend/vif/0/3" ? thanks in advance for an respoonse concerning any question. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Good morning every one, I decided to change the code so it would be possible the change it dynamically the code change will affect this file "DOM0/drivers/xen/netback/xenbus.c" for the moment the rate is fixed inside the connect function static void connect(struct backend_info *be) { ... if (err) { xenbus_dev_fatal(dev, err, "parsing %s/mac", dev->nodename); return; } xen_net_read_rate(dev, &be->netif->credit_bytes, &be->netif->credit_usec); be->netif->remaining_credit = be->netif->credit_bytes; ... I want to add a function that read the rate dynamically from a /proc file but to change rate i need to have a pointer to the backend_info struct or a least to xen_netif one so i can change in the netback.c file in function static bool tx_credit_exceeded(struct xen_netif *netif, unsigned size) and static void tx_add_credit(struct xen_netif *netif) to impose readinh the value of crdit bye ans credit_usec from proc so my questions are : 1- is it a good way to send new rate values from proc file ? 2-how to get pointer to correct xen_netif from vif name thanks in advance for an respoonse concerning any question. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel