Re: [PATCH 4/9] netfilter: h323: eliminate anonymous module_init & module_exit

[Randy Dunlap]

On 3/17/22 08:49, Pablo Neira Ayuso wrote:
> On Wed, Mar 16, 2022 at 12:20:05PM -0700, Randy Dunlap wrote:
>> Eliminate anonymous module_init() and module_exit(), which can lead to
>> confusion or ambiguity when reading System.map, crashes/oops/bugs,
>> or an initcall_debug log.
>>
>> Give each of these init and exit functions unique driver-specific
>> names to eliminate the anonymous names.
>>
>> Example 1: (System.map)
>>  ffffffff832fc78c t init
>>  ffffffff832fc79e t init
>>  ffffffff832fc8f8 t init
>>
>> Example 2: (initcall_debug log)
>>  calling  init+0x0/0x12 @ 1
>>  initcall init+0x0/0x12 returned 0 after 15 usecs
>>  calling  init+0x0/0x60 @ 1
>>  initcall init+0x0/0x60 returned 0 after 2 usecs
>>  calling  init+0x0/0x9a @ 1
>>  initcall init+0x0/0x9a returned 0 after 74 usecs
> 
> LGTM.
> 
> Should I route this through the netfilter tree?

Yes, please.
Thanks.

> 
>> Fixes: f587de0e2feb ("[NETFILTER]: nf_conntrack/nf_nat: add H.323 helper port")
>> Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
>> Cc: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
>> Cc: Jozsef Kadlecsik <kadlec@xxxxxxxxxxxxx>
>> Cc: Florian Westphal <fw@xxxxxxxxx>
>> Cc: netfilter-devel@xxxxxxxxxxxxxxx
>> Cc: coreteam@xxxxxxxxxxxxx
>> Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
>> Cc: Jakub Kicinski <kuba@xxxxxxxxxx>
>> Cc: netdev@xxxxxxxxxxxxxxx
>> ---
>>  net/ipv4/netfilter/nf_nat_h323.c |    8 ++++----
>>  1 file changed, 4 insertions(+), 4 deletions(-)
>>
>> --- lnx-517-rc8.orig/net/ipv4/netfilter/nf_nat_h323.c
>> +++ lnx-517-rc8/net/ipv4/netfilter/nf_nat_h323.c
>> @@ -580,7 +580,7 @@ static struct nf_ct_helper_expectfn call
>>  };
>>  
>>  /****************************************************************************/
>> -static int __init init(void)
>> +static int __init nf_nat_h323_init(void)
>>  {
>>  	BUG_ON(set_h245_addr_hook != NULL);
>>  	BUG_ON(set_h225_addr_hook != NULL);
>> @@ -607,7 +607,7 @@ static int __init init(void)
>>  }
>>  
>>  /****************************************************************************/
>> -static void __exit fini(void)
>> +static void __exit nf_nat_h323_fini(void)
>>  {
>>  	RCU_INIT_POINTER(set_h245_addr_hook, NULL);
>>  	RCU_INIT_POINTER(set_h225_addr_hook, NULL);
>> @@ -624,8 +624,8 @@ static void __exit fini(void)
>>  }
>>  
>>  /****************************************************************************/
>> -module_init(init);
>> -module_exit(fini);
>> +module_init(nf_nat_h323_init);
>> +module_exit(nf_nat_h323_fini);
>>  
>>  MODULE_AUTHOR("Jing Min Zhao <zhaojingmin@xxxxxxxxxxxxxxxxxxxxx>");
>>  MODULE_DESCRIPTION("H.323 NAT helper");

-- 
~Randy