From e1c6c383123ab1caadbfe39b3362ce0cc09dd766 Mon Sep 17 00:00:00 2001 From: Kuniyuki Iwashima Date: Mon, 14 Oct 2024 13:18:28 -0700 Subject: [PATCH] rtnetlink: Remove rtnl_register() and rtnl_register_module(). No one uses rtnl_register() and rtnl_register_module(). Let's remove them. Signed-off-by: Kuniyuki Iwashima Reviewed-by: Eric Dumazet Link: https://patch.msgid.link/20241014201828.91221-12-kuniyu@amazon.com Signed-off-by: Jakub Kicinski --- include/net/rtnetlink.h | 15 ++++++--- net/core/rtnetlink.c | 74 ++++++++++++----------------------------- 2 files changed, 31 insertions(+), 58 deletions(-) diff --git a/include/net/rtnetlink.h b/include/net/rtnetlink.h index 2d3eb7cb4dfff..bb49c5708ce7e 100644 --- a/include/net/rtnetlink.h +++ b/include/net/rtnetlink.h @@ -29,6 +29,16 @@ static inline enum rtnl_kinds rtnl_msgtype_kind(int msgtype) return msgtype & RTNL_KIND_MASK; } +/** + * struct rtnl_msg_handler - rtnetlink message type and handlers + * + * @owner: NULL for built-in, THIS_MODULE for module + * @protocol: Protocol family or PF_UNSPEC + * @msgtype: rtnetlink message type + * @doit: Function pointer called for each request message + * @dumpit: Function pointer called for each dump request (NLM_F_DUMP) message + * @flags: rtnl_link_flags to modify behaviour of doit/dumpit functions + */ struct rtnl_msg_handler { struct module *owner; int protocol; @@ -38,11 +48,6 @@ struct rtnl_msg_handler { int flags; }; -void rtnl_register(int protocol, int msgtype, - rtnl_doit_func, rtnl_dumpit_func, unsigned int flags); -int rtnl_register_module(struct module *owner, int protocol, int msgtype, - rtnl_doit_func, rtnl_dumpit_func, unsigned int flags); -int rtnl_unregister(int protocol, int msgtype); void rtnl_unregister_all(int protocol); int __rtnl_register_many(const struct rtnl_msg_handler *handlers, int n); diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index 0fbbfeb2cb503..a9c92392fb1db 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -338,57 +338,6 @@ static int rtnl_register_internal(struct module *owner, return ret; } -/** - * rtnl_register_module - Register a rtnetlink message type - * - * @owner: module registering the hook (THIS_MODULE) - * @protocol: Protocol family or PF_UNSPEC - * @msgtype: rtnetlink message type - * @doit: Function pointer called for each request message - * @dumpit: Function pointer called for each dump request (NLM_F_DUMP) message - * @flags: rtnl_link_flags to modify behaviour of doit/dumpit functions - * - * Like rtnl_register, but for use by removable modules. - */ -int rtnl_register_module(struct module *owner, - int protocol, int msgtype, - rtnl_doit_func doit, rtnl_dumpit_func dumpit, - unsigned int flags) -{ - return rtnl_register_internal(owner, protocol, msgtype, - doit, dumpit, flags); -} -EXPORT_SYMBOL_GPL(rtnl_register_module); - -/** - * rtnl_register - Register a rtnetlink message type - * @protocol: Protocol family or PF_UNSPEC - * @msgtype: rtnetlink message type - * @doit: Function pointer called for each request message - * @dumpit: Function pointer called for each dump request (NLM_F_DUMP) message - * @flags: rtnl_link_flags to modify behaviour of doit/dumpit functions - * - * Registers the specified function pointers (at least one of them has - * to be non-NULL) to be called whenever a request message for the - * specified protocol family and message type is received. - * - * The special protocol family PF_UNSPEC may be used to define fallback - * function pointers for the case when no entry for the specific protocol - * family exists. - */ -void rtnl_register(int protocol, int msgtype, - rtnl_doit_func doit, rtnl_dumpit_func dumpit, - unsigned int flags) -{ - int err; - - err = rtnl_register_internal(NULL, protocol, msgtype, doit, dumpit, - flags); - if (err) - pr_err("Unable to register rtnetlink message handler, " - "protocol = %d, message type = %d\n", protocol, msgtype); -} - /** * rtnl_unregister - Unregister a rtnetlink message type * @protocol: Protocol family or PF_UNSPEC @@ -396,7 +345,7 @@ void rtnl_register(int protocol, int msgtype, * * Returns 0 on success or a negative error code. */ -int rtnl_unregister(int protocol, int msgtype) +static int rtnl_unregister(int protocol, int msgtype) { struct rtnl_link __rcu **tab; struct rtnl_link *link; @@ -419,7 +368,6 @@ int rtnl_unregister(int protocol, int msgtype) return 0; } -EXPORT_SYMBOL_GPL(rtnl_unregister); /** * rtnl_unregister_all - Unregister all rtnetlink message type of a protocol @@ -454,6 +402,26 @@ void rtnl_unregister_all(int protocol) } EXPORT_SYMBOL_GPL(rtnl_unregister_all); +/** + * __rtnl_register_many - Register rtnetlink message types + * @handlers: Array of struct rtnl_msg_handlers + * @n: The length of @handlers + * + * Registers the specified function pointers (at least one of them has + * to be non-NULL) to be called whenever a request message for the + * specified protocol family and message type is received. + * + * The special protocol family PF_UNSPEC may be used to define fallback + * function pointers for the case when no entry for the specific protocol + * family exists. + * + * When one element of @handlers fails to register, + * 1) built-in: panics. + * 2) modules : the previous successful registrations are unwinded + * and an error is returned. + * + * Use rtnl_register_many(). + */ int __rtnl_register_many(const struct rtnl_msg_handler *handlers, int n) { const struct rtnl_msg_handler *handler;