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team: add support for per-port options
This patch allows to create per-port options. That becomes handy for all sorts of stuff, for example for userspace driven link-state, 802.3ad implementation and so on. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko
David S. Miller
parent
7a5cc24277
commit
80f7c6683f
@ -81,7 +81,16 @@ EXPORT_SYMBOL(team_port_set_team_mac);
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* Options handling
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*******************/
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struct team_option *__team_find_option(struct team *team, const char *opt_name)
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struct team_option_inst { /* One for each option instance */
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struct list_head list;
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struct team_option *option;
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struct team_port *port; /* != NULL if per-port */
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bool changed;
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bool removed;
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};
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static struct team_option *__team_find_option(struct team *team,
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const char *opt_name)
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{
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struct team_option *option;
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@ -92,9 +101,121 @@ struct team_option *__team_find_option(struct team *team, const char *opt_name)
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return NULL;
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}
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int __team_options_register(struct team *team,
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const struct team_option *option,
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size_t option_count)
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static int __team_option_inst_add(struct team *team, struct team_option *option,
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struct team_port *port)
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{
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struct team_option_inst *opt_inst;
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opt_inst = kmalloc(sizeof(*opt_inst), GFP_KERNEL);
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if (!opt_inst)
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return -ENOMEM;
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opt_inst->option = option;
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opt_inst->port = port;
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opt_inst->changed = true;
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opt_inst->removed = false;
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list_add_tail(&opt_inst->list, &team->option_inst_list);
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return 0;
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}
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static void __team_option_inst_del(struct team_option_inst *opt_inst)
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{
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list_del(&opt_inst->list);
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kfree(opt_inst);
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}
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static void __team_option_inst_del_option(struct team *team,
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struct team_option *option)
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{
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struct team_option_inst *opt_inst, *tmp;
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list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) {
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if (opt_inst->option == option)
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__team_option_inst_del(opt_inst);
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}
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}
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static int __team_option_inst_add_option(struct team *team,
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struct team_option *option)
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{
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struct team_port *port;
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int err;
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if (!option->per_port)
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return __team_option_inst_add(team, option, 0);
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list_for_each_entry(port, &team->port_list, list) {
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err = __team_option_inst_add(team, option, port);
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if (err)
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goto inst_del_option;
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}
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return 0;
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inst_del_option:
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__team_option_inst_del_option(team, option);
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return err;
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}
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static void __team_option_inst_mark_removed_option(struct team *team,
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struct team_option *option)
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{
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struct team_option_inst *opt_inst;
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list_for_each_entry(opt_inst, &team->option_inst_list, list) {
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if (opt_inst->option == option) {
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opt_inst->changed = true;
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opt_inst->removed = true;
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}
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}
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}
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static void __team_option_inst_del_port(struct team *team,
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struct team_port *port)
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{
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struct team_option_inst *opt_inst, *tmp;
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list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) {
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if (opt_inst->option->per_port &&
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opt_inst->port == port)
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__team_option_inst_del(opt_inst);
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}
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}
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static int __team_option_inst_add_port(struct team *team,
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struct team_port *port)
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{
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struct team_option *option;
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int err;
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list_for_each_entry(option, &team->option_list, list) {
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if (!option->per_port)
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continue;
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err = __team_option_inst_add(team, option, port);
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if (err)
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goto inst_del_port;
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}
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return 0;
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inst_del_port:
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__team_option_inst_del_port(team, port);
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return err;
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}
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static void __team_option_inst_mark_removed_port(struct team *team,
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struct team_port *port)
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{
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struct team_option_inst *opt_inst;
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list_for_each_entry(opt_inst, &team->option_inst_list, list) {
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if (opt_inst->port == port) {
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opt_inst->changed = true;
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opt_inst->removed = true;
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}
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}
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}
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static int __team_options_register(struct team *team,
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const struct team_option *option,
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size_t option_count)
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{
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int i;
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struct team_option **dst_opts;
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@ -107,26 +228,32 @@ int __team_options_register(struct team *team,
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for (i = 0; i < option_count; i++, option++) {
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if (__team_find_option(team, option->name)) {
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err = -EEXIST;
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goto rollback;
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goto alloc_rollback;
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}
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dst_opts[i] = kmemdup(option, sizeof(*option), GFP_KERNEL);
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if (!dst_opts[i]) {
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err = -ENOMEM;
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goto rollback;
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goto alloc_rollback;
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}
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}
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for (i = 0; i < option_count; i++) {
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dst_opts[i]->changed = true;
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dst_opts[i]->removed = false;
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err = __team_option_inst_add_option(team, dst_opts[i]);
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if (err)
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goto inst_rollback;
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list_add_tail(&dst_opts[i]->list, &team->option_list);
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}
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kfree(dst_opts);
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return 0;
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rollback:
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for (i = 0; i < option_count; i++)
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inst_rollback:
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for (i--; i >= 0; i--)
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__team_option_inst_del_option(team, dst_opts[i]);
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i = option_count - 1;
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alloc_rollback:
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for (i--; i >= 0; i--)
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kfree(dst_opts[i]);
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kfree(dst_opts);
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@ -143,10 +270,8 @@ static void __team_options_mark_removed(struct team *team,
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struct team_option *del_opt;
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del_opt = __team_find_option(team, option->name);
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if (del_opt) {
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del_opt->changed = true;
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del_opt->removed = true;
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}
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if (del_opt)
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__team_option_inst_mark_removed_option(team, del_opt);
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}
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}
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@ -161,6 +286,7 @@ static void __team_options_unregister(struct team *team,
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del_opt = __team_find_option(team, option->name);
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if (del_opt) {
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__team_option_inst_del_option(team, del_opt);
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list_del(&del_opt->list);
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kfree(del_opt);
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}
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@ -193,22 +319,42 @@ void team_options_unregister(struct team *team,
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}
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EXPORT_SYMBOL(team_options_unregister);
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static int team_option_get(struct team *team, struct team_option *option,
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void *arg)
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{
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return option->getter(team, arg);
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}
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static int team_option_set(struct team *team, struct team_option *option,
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void *arg)
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static int team_option_port_add(struct team *team, struct team_port *port)
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{
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int err;
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err = option->setter(team, arg);
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err = __team_option_inst_add_port(team, port);
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if (err)
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return err;
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__team_options_change_check(team);
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return 0;
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}
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static void team_option_port_del(struct team *team, struct team_port *port)
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{
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__team_option_inst_mark_removed_port(team, port);
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__team_options_change_check(team);
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__team_option_inst_del_port(team, port);
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}
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static int team_option_get(struct team *team,
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struct team_option_inst *opt_inst,
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struct team_gsetter_ctx *ctx)
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{
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return opt_inst->option->getter(team, ctx);
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}
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static int team_option_set(struct team *team,
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struct team_option_inst *opt_inst,
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struct team_gsetter_ctx *ctx)
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{
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int err;
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err = opt_inst->option->setter(team, ctx);
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if (err)
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return err;
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option->changed = true;
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opt_inst->changed = true;
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__team_options_change_check(team);
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return err;
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}
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@ -642,6 +788,13 @@ static int team_port_add(struct team *team, struct net_device *port_dev)
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goto err_handler_register;
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}
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err = team_option_port_add(team, port);
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if (err) {
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netdev_err(dev, "Device %s failed to add per-port options\n",
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portname);
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goto err_option_port_add;
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}
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team_port_list_add_port(team, port);
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team_adjust_ops(team);
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__team_compute_features(team);
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@ -651,6 +804,9 @@ static int team_port_add(struct team *team, struct net_device *port_dev)
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return 0;
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err_option_port_add:
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netdev_rx_handler_unregister(port_dev);
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err_handler_register:
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netdev_set_master(port_dev, NULL);
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@ -690,6 +846,7 @@ static int team_port_del(struct team *team, struct net_device *port_dev)
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__team_port_change_check(port, false);
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team_port_list_del_port(team, port);
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team_adjust_ops(team);
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team_option_port_del(team, port);
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netdev_rx_handler_unregister(port_dev);
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netdev_set_master(port_dev, NULL);
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vlan_vids_del_by_dev(port_dev, dev);
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@ -712,19 +869,15 @@ static int team_port_del(struct team *team, struct net_device *port_dev)
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static const char team_no_mode_kind[] = "*NOMODE*";
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static int team_mode_option_get(struct team *team, void *arg)
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static int team_mode_option_get(struct team *team, struct team_gsetter_ctx *ctx)
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{
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const char **str = arg;
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*str = team->mode ? team->mode->kind : team_no_mode_kind;
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ctx->data.str_val = team->mode ? team->mode->kind : team_no_mode_kind;
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return 0;
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}
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static int team_mode_option_set(struct team *team, void *arg)
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static int team_mode_option_set(struct team *team, struct team_gsetter_ctx *ctx)
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{
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const char **str = arg;
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return team_change_mode(team, *str);
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return team_change_mode(team, ctx->data.str_val);
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}
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static const struct team_option team_options[] = {
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@ -756,6 +909,7 @@ static int team_init(struct net_device *dev)
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team_adjust_ops(team);
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INIT_LIST_HEAD(&team->option_list);
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INIT_LIST_HEAD(&team->option_inst_list);
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err = team_options_register(team, team_options, ARRAY_SIZE(team_options));
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if (err)
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goto err_options_register;
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@ -1238,7 +1392,8 @@ static int team_nl_fill_options_get(struct sk_buff *skb,
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{
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struct nlattr *option_list;
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void *hdr;
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struct team_option *option;
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struct team_option_inst *opt_inst;
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int err;
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hdr = genlmsg_put(skb, pid, seq, &team_nl_family, flags,
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TEAM_CMD_OPTIONS_GET);
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@ -1251,50 +1406,61 @@ static int team_nl_fill_options_get(struct sk_buff *skb,
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if (!option_list)
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return -EMSGSIZE;
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list_for_each_entry(option, &team->option_list, list) {
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list_for_each_entry(opt_inst, &team->option_inst_list, list) {
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struct nlattr *option_item;
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long arg;
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struct team_option_binary tbinary;
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struct team_option *option = opt_inst->option;
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struct team_gsetter_ctx ctx;
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/* Include only changed options if fill all mode is not on */
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if (!fillall && !option->changed)
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if (!fillall && !opt_inst->changed)
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continue;
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option_item = nla_nest_start(skb, TEAM_ATTR_ITEM_OPTION);
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if (!option_item)
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goto nla_put_failure;
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if (nla_put_string(skb, TEAM_ATTR_OPTION_NAME, option->name))
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goto nla_put_failure;
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if (option->changed) {
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if (opt_inst->changed) {
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if (nla_put_flag(skb, TEAM_ATTR_OPTION_CHANGED))
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goto nla_put_failure;
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option->changed = false;
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opt_inst->changed = false;
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}
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if (option->removed &&
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if (opt_inst->removed &&
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nla_put_flag(skb, TEAM_ATTR_OPTION_REMOVED))
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goto nla_put_failure;
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if (opt_inst->port &&
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nla_put_u32(skb, TEAM_ATTR_OPTION_PORT_IFINDEX,
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opt_inst->port->dev->ifindex))
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goto nla_put_failure;
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ctx.port = opt_inst->port;
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switch (option->type) {
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case TEAM_OPTION_TYPE_U32:
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if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_U32))
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goto nla_put_failure;
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team_option_get(team, option, &arg);
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if (nla_put_u32(skb, TEAM_ATTR_OPTION_DATA, arg))
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err = team_option_get(team, opt_inst, &ctx);
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if (err)
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goto errout;
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if (nla_put_u32(skb, TEAM_ATTR_OPTION_DATA,
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ctx.data.u32_val))
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goto nla_put_failure;
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break;
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case TEAM_OPTION_TYPE_STRING:
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if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_STRING))
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goto nla_put_failure;
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team_option_get(team, option, &arg);
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err = team_option_get(team, opt_inst, &ctx);
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if (err)
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goto errout;
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if (nla_put_string(skb, TEAM_ATTR_OPTION_DATA,
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(char *) arg))
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ctx.data.str_val))
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goto nla_put_failure;
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break;
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case TEAM_OPTION_TYPE_BINARY:
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if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_BINARY))
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goto nla_put_failure;
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arg = (long) &tbinary;
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team_option_get(team, option, &arg);
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err = team_option_get(team, opt_inst, &ctx);
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if (err)
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goto errout;
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if (nla_put(skb, TEAM_ATTR_OPTION_DATA,
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tbinary.data_len, tbinary.data))
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ctx.data.bin_val.len, ctx.data.bin_val.ptr))
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goto nla_put_failure;
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break;
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default:
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@ -1307,8 +1473,10 @@ static int team_nl_fill_options_get(struct sk_buff *skb,
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return genlmsg_end(skb, hdr);
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nla_put_failure:
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err = -EMSGSIZE;
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errout:
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genlmsg_cancel(skb, hdr);
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return -EMSGSIZE;
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return err;
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}
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static int team_nl_fill_options_get_all(struct sk_buff *skb,
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@ -1354,9 +1522,11 @@ static int team_nl_cmd_options_set(struct sk_buff *skb, struct genl_info *info)
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}
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nla_for_each_nested(nl_option, info->attrs[TEAM_ATTR_LIST_OPTION], i) {
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struct nlattr *mode_attrs[TEAM_ATTR_OPTION_MAX + 1];
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struct nlattr *opt_attrs[TEAM_ATTR_OPTION_MAX + 1];
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struct nlattr *attr_port_ifindex;
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enum team_option_type opt_type;
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struct team_option *option;
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int opt_port_ifindex = 0; /* != 0 for per-port options */
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struct team_option_inst *opt_inst;
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char *opt_name;
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bool opt_found = false;
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@ -1364,17 +1534,17 @@ static int team_nl_cmd_options_set(struct sk_buff *skb, struct genl_info *info)
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err = -EINVAL;
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goto team_put;
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}
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err = nla_parse_nested(mode_attrs, TEAM_ATTR_OPTION_MAX,
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err = nla_parse_nested(opt_attrs, TEAM_ATTR_OPTION_MAX,
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nl_option, team_nl_option_policy);
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if (err)
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goto team_put;
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if (!mode_attrs[TEAM_ATTR_OPTION_NAME] ||
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!mode_attrs[TEAM_ATTR_OPTION_TYPE] ||
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!mode_attrs[TEAM_ATTR_OPTION_DATA]) {
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if (!opt_attrs[TEAM_ATTR_OPTION_NAME] ||
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!opt_attrs[TEAM_ATTR_OPTION_TYPE] ||
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!opt_attrs[TEAM_ATTR_OPTION_DATA]) {
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err = -EINVAL;
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goto team_put;
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}
|
||||
switch (nla_get_u8(mode_attrs[TEAM_ATTR_OPTION_TYPE])) {
|
||||
switch (nla_get_u8(opt_attrs[TEAM_ATTR_OPTION_TYPE])) {
|
||||
case NLA_U32:
|
||||
opt_type = TEAM_OPTION_TYPE_U32;
|
||||
break;
|
||||
@ -1388,39 +1558,47 @@ static int team_nl_cmd_options_set(struct sk_buff *skb, struct genl_info *info)
|
||||
goto team_put;
|
||||
}
|
||||
|
||||
opt_name = nla_data(mode_attrs[TEAM_ATTR_OPTION_NAME]);
|
||||
list_for_each_entry(option, &team->option_list, list) {
|
||||
long arg;
|
||||
struct nlattr *opt_data_attr;
|
||||
struct team_option_binary tbinary;
|
||||
int data_len;
|
||||
opt_name = nla_data(opt_attrs[TEAM_ATTR_OPTION_NAME]);
|
||||
attr_port_ifindex = opt_attrs[TEAM_ATTR_OPTION_PORT_IFINDEX];
|
||||
if (attr_port_ifindex)
|
||||
opt_port_ifindex = nla_get_u32(attr_port_ifindex);
|
||||
|
||||
list_for_each_entry(opt_inst, &team->option_inst_list, list) {
|
||||
struct team_option *option = opt_inst->option;
|
||||
struct nlattr *opt_data_attr;
|
||||
struct team_gsetter_ctx ctx;
|
||||
int data_len;
|
||||
int tmp_ifindex;
|
||||
|
||||
tmp_ifindex = opt_inst->port ?
|
||||
opt_inst->port->dev->ifindex : 0;
|
||||
if (option->type != opt_type ||
|
||||
strcmp(option->name, opt_name))
|
||||
strcmp(option->name, opt_name) ||
|
||||
tmp_ifindex != opt_port_ifindex)
|
||||
continue;
|
||||
opt_found = true;
|
||||
opt_data_attr = mode_attrs[TEAM_ATTR_OPTION_DATA];
|
||||
opt_data_attr = opt_attrs[TEAM_ATTR_OPTION_DATA];
|
||||
data_len = nla_len(opt_data_attr);
|
||||
ctx.port = opt_inst->port;
|
||||
switch (opt_type) {
|
||||
case TEAM_OPTION_TYPE_U32:
|
||||
arg = nla_get_u32(opt_data_attr);
|
||||
ctx.data.u32_val = nla_get_u32(opt_data_attr);
|
||||
break;
|
||||
case TEAM_OPTION_TYPE_STRING:
|
||||
if (data_len > TEAM_STRING_MAX_LEN) {
|
||||
err = -EINVAL;
|
||||
goto team_put;
|
||||
}
|
||||
arg = (long) nla_data(opt_data_attr);
|
||||
ctx.data.str_val = nla_data(opt_data_attr);
|
||||
break;
|
||||
case TEAM_OPTION_TYPE_BINARY:
|
||||
tbinary.data_len = data_len;
|
||||
tbinary.data = nla_data(opt_data_attr);
|
||||
arg = (long) &tbinary;
|
||||
ctx.data.bin_val.len = data_len;
|
||||
ctx.data.bin_val.ptr = nla_data(opt_data_attr);
|
||||
break;
|
||||
default:
|
||||
BUG();
|
||||
}
|
||||
err = team_option_set(team, option, &arg);
|
||||
err = team_option_set(team, opt_inst, &ctx);
|
||||
if (err)
|
||||
goto team_put;
|
||||
}
|
||||
|
||||
@ -59,23 +59,21 @@ static void ab_port_leave(struct team *team, struct team_port *port)
|
||||
RCU_INIT_POINTER(ab_priv(team)->active_port, NULL);
|
||||
}
|
||||
|
||||
static int ab_active_port_get(struct team *team, void *arg)
|
||||
static int ab_active_port_get(struct team *team, struct team_gsetter_ctx *ctx)
|
||||
{
|
||||
u32 *ifindex = arg;
|
||||
|
||||
*ifindex = 0;
|
||||
if (ab_priv(team)->active_port)
|
||||
*ifindex = ab_priv(team)->active_port->dev->ifindex;
|
||||
ctx->data.u32_val = ab_priv(team)->active_port->dev->ifindex;
|
||||
else
|
||||
ctx->data.u32_val = 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int ab_active_port_set(struct team *team, void *arg)
|
||||
static int ab_active_port_set(struct team *team, struct team_gsetter_ctx *ctx)
|
||||
{
|
||||
u32 *ifindex = arg;
|
||||
struct team_port *port;
|
||||
|
||||
list_for_each_entry_rcu(port, &team->port_list, list) {
|
||||
if (port->dev->ifindex == *ifindex) {
|
||||
if (port->dev->ifindex == ctx->data.u32_val) {
|
||||
rcu_assign_pointer(ab_priv(team)->active_port, port);
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -52,22 +52,21 @@ drop:
|
||||
return false;
|
||||
}
|
||||
|
||||
static int lb_bpf_func_get(struct team *team, void *arg)
|
||||
static int lb_bpf_func_get(struct team *team, struct team_gsetter_ctx *ctx)
|
||||
{
|
||||
struct team_option_binary *tbinary = team_optarg_tbinary(arg);
|
||||
|
||||
memset(tbinary, 0, sizeof(*tbinary));
|
||||
if (!lb_priv(team)->orig_fprog)
|
||||
if (!lb_priv(team)->orig_fprog) {
|
||||
ctx->data.bin_val.len = 0;
|
||||
ctx->data.bin_val.ptr = NULL;
|
||||
return 0;
|
||||
|
||||
tbinary->data_len = lb_priv(team)->orig_fprog->len *
|
||||
sizeof(struct sock_filter);
|
||||
tbinary->data = lb_priv(team)->orig_fprog->filter;
|
||||
}
|
||||
ctx->data.bin_val.len = lb_priv(team)->orig_fprog->len *
|
||||
sizeof(struct sock_filter);
|
||||
ctx->data.bin_val.ptr = lb_priv(team)->orig_fprog->filter;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int __fprog_create(struct sock_fprog **pfprog, u32 data_len,
|
||||
void *data)
|
||||
const void *data)
|
||||
{
|
||||
struct sock_fprog *fprog;
|
||||
struct sock_filter *filter = (struct sock_filter *) data;
|
||||
@ -93,16 +92,15 @@ static void __fprog_destroy(struct sock_fprog *fprog)
|
||||
kfree(fprog);
|
||||
}
|
||||
|
||||
static int lb_bpf_func_set(struct team *team, void *arg)
|
||||
static int lb_bpf_func_set(struct team *team, struct team_gsetter_ctx *ctx)
|
||||
{
|
||||
struct team_option_binary *tbinary = team_optarg_tbinary(arg);
|
||||
struct sk_filter *fp = NULL;
|
||||
struct sock_fprog *fprog = NULL;
|
||||
int err;
|
||||
|
||||
if (tbinary->data_len) {
|
||||
err = __fprog_create(&fprog, tbinary->data_len,
|
||||
tbinary->data);
|
||||
if (ctx->data.bin_val.len) {
|
||||
err = __fprog_create(&fprog, ctx->data.bin_val.len,
|
||||
ctx->data.bin_val.ptr);
|
||||
if (err)
|
||||
return err;
|
||||
err = sk_unattached_filter_create(&fp, fprog);
|
||||
|
||||
@ -71,25 +71,27 @@ enum team_option_type {
|
||||
TEAM_OPTION_TYPE_BINARY,
|
||||
};
|
||||
|
||||
struct team_gsetter_ctx {
|
||||
union {
|
||||
u32 u32_val;
|
||||
const char *str_val;
|
||||
struct {
|
||||
const void *ptr;
|
||||
u32 len;
|
||||
} bin_val;
|
||||
} data;
|
||||
struct team_port *port;
|
||||
};
|
||||
|
||||
struct team_option {
|
||||
struct list_head list;
|
||||
const char *name;
|
||||
bool per_port;
|
||||
enum team_option_type type;
|
||||
int (*getter)(struct team *team, void *arg);
|
||||
int (*setter)(struct team *team, void *arg);
|
||||
|
||||
/* Custom gennetlink interface related flags */
|
||||
bool changed;
|
||||
bool removed;
|
||||
int (*getter)(struct team *team, struct team_gsetter_ctx *ctx);
|
||||
int (*setter)(struct team *team, struct team_gsetter_ctx *ctx);
|
||||
};
|
||||
|
||||
struct team_option_binary {
|
||||
u32 data_len;
|
||||
void *data;
|
||||
};
|
||||
|
||||
#define team_optarg_tbinary(arg) (*((struct team_option_binary **) arg))
|
||||
|
||||
struct team_mode {
|
||||
struct list_head list;
|
||||
const char *kind;
|
||||
@ -118,6 +120,7 @@ struct team {
|
||||
struct list_head port_list;
|
||||
|
||||
struct list_head option_list;
|
||||
struct list_head option_inst_list; /* list of option instances */
|
||||
|
||||
const struct team_mode *mode;
|
||||
struct team_mode_ops ops;
|
||||
@ -224,6 +227,7 @@ enum {
|
||||
TEAM_ATTR_OPTION_TYPE, /* u8 */
|
||||
TEAM_ATTR_OPTION_DATA, /* dynamic */
|
||||
TEAM_ATTR_OPTION_REMOVED, /* flag */
|
||||
TEAM_ATTR_OPTION_PORT_IFINDEX, /* u32 */ /* for per-port options */
|
||||
|
||||
__TEAM_ATTR_OPTION_MAX,
|
||||
TEAM_ATTR_OPTION_MAX = __TEAM_ATTR_OPTION_MAX - 1,
|
||||
|
||||
Loading…
Reference in New Issue
Block a user