diff mbox

[PATCHv2,bluetooth-next,08/10] ipv6: export ndisc functions

Message ID 1461140382-4784-9-git-send-email-aar@pengutronix.de (mailing list archive)
State Superseded
Headers show

Commit Message

Alexander Aring April 20, 2016, 8:19 a.m. UTC
This patch exports some neighbour discovery functions which can be used
by 6lowpan neighbour discovery ops functionality then.

Cc: David S. Miller <davem@davemloft.net>
Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Cc: James Morris <jmorris@namei.org>
Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
Cc: Patrick McHardy <kaber@trash.net>
Signed-off-by: Alexander Aring <aar@pengutronix.de>
---
 include/net/ndisc.h | 16 ++++++++++++++++
 net/ipv6/addrconf.c |  1 +
 net/ipv6/ndisc.c    | 28 ++++++++++------------------
 3 files changed, 27 insertions(+), 18 deletions(-)

Comments

Hannes Frederic Sowa May 2, 2016, 7:39 p.m. UTC | #1
On 20.04.2016 10:19, Alexander Aring wrote:
> This patch exports some neighbour discovery functions which can be used
> by 6lowpan neighbour discovery ops functionality then.
> 
> Cc: David S. Miller <davem@davemloft.net>
> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
> Cc: James Morris <jmorris@namei.org>
> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
> Cc: Patrick McHardy <kaber@trash.net>
> Signed-off-by: Alexander Aring <aar@pengutronix.de>
> ---
>  include/net/ndisc.h | 16 ++++++++++++++++
>  net/ipv6/addrconf.c |  1 +
>  net/ipv6/ndisc.c    | 28 ++++++++++------------------
>  3 files changed, 27 insertions(+), 18 deletions(-)
> 
> diff --git a/include/net/ndisc.h b/include/net/ndisc.h
> index 14ed016..35a4396 100644
> --- a/include/net/ndisc.h
> +++ b/include/net/ndisc.h
> @@ -53,6 +53,15 @@ enum {
>  
>  #include <net/neighbour.h>
>  
> +/* Set to 3 to get tracing... */
> +#define ND_DEBUG 1
> +
> +#define ND_PRINTK(val, level, fmt, ...)				\
> +do {								\
> +	if (val <= ND_DEBUG)					\
> +		net_##level##_ratelimited(fmt, ##__VA_ARGS__);	\
> +} while (0)
> +

If the debug messages are well thought out, I think we could install
them always on debug level.

There are valid users now, so

Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>

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Stefan Schmidt May 4, 2016, 12:23 p.m. UTC | #2
Hello.

On 20/04/16 10:19, Alexander Aring wrote:
> This patch exports some neighbour discovery functions which can be used
> by 6lowpan neighbour discovery ops functionality then.
>
> Cc: David S. Miller<davem@davemloft.net>
> Cc: Alexey Kuznetsov<kuznet@ms2.inr.ac.ru>
> Cc: James Morris<jmorris@namei.org>
> Cc: Hideaki YOSHIFUJI<yoshfuji@linux-ipv6.org>
> Cc: Patrick McHardy<kaber@trash.net>
> Signed-off-by: Alexander Aring<aar@pengutronix.de>
> ---
>   include/net/ndisc.h | 16 ++++++++++++++++
>   net/ipv6/addrconf.c |  1 +
>   net/ipv6/ndisc.c    | 28 ++++++++++------------------
>   3 files changed, 27 insertions(+), 18 deletions(-)
>
> diff --git a/include/net/ndisc.h b/include/net/ndisc.h
> index 14ed016..35a4396 100644
> --- a/include/net/ndisc.h
> +++ b/include/net/ndisc.h
> @@ -53,6 +53,15 @@ enum {
>   
>   #include <net/neighbour.h>
>   
> +/* Set to 3 to get tracing... */
> +#define ND_DEBUG 1
> +
> +#define ND_PRINTK(val, level, fmt, ...)				\
> +do {								\
> +	if (val <= ND_DEBUG)					\
> +		net_##level##_ratelimited(fmt, ##__VA_ARGS__);	\
> +} while (0)
> +
>   struct ctl_table;
>   struct inet6_dev;
>   struct net_device;
> @@ -267,6 +276,13 @@ int ndisc_late_init(void);
>   void ndisc_late_cleanup(void);
>   void ndisc_cleanup(void);
>   
> +void ndisc_fill_addr_option(struct sk_buff *skb, int type, void *data,
> +			    int data_len);
> +struct sk_buff *ndisc_alloc_skb(struct net_device *dev, int len);
> +void ndisc_send_skb(struct sk_buff *skb, const struct in6_addr *daddr,
> +		    const struct in6_addr *saddr);
> +int pndisc_is_router(const void *pkey, struct net_device *dev);
> +
>   int ndisc_rcv(struct sk_buff *skb);
>   
>   void ndisc_send_rs(struct net_device *dev,
> diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
> index a2ef04b..8f05ef8 100644
> --- a/net/ipv6/addrconf.c
> +++ b/net/ipv6/addrconf.c
> @@ -1775,6 +1775,7 @@ struct inet6_ifaddr *ipv6_get_ifaddr(struct net *net, const struct in6_addr *add
>   
>   	return result;
>   }
> +EXPORT_SYMBOL(ipv6_get_ifaddr);
>   
>   /* Gets referenced address, destroys ifaddr */
>   
> diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
> index 297080a..dc8bfec 100644
> --- a/net/ipv6/ndisc.c
> +++ b/net/ipv6/ndisc.c
> @@ -73,15 +73,6 @@
>   #include <linux/netfilter.h>
>   #include <linux/netfilter_ipv6.h>
>   
> -/* Set to 3 to get tracing... */
> -#define ND_DEBUG 1
> -
> -#define ND_PRINTK(val, level, fmt, ...)				\
> -do {								\
> -	if (val <= ND_DEBUG)					\
> -		net_##level##_ratelimited(fmt, ##__VA_ARGS__);	\
> -} while (0)
> -
>   static u32 ndisc_hash(const void *pkey,
>   		      const struct net_device *dev,
>   		      __u32 *hash_rnd);
> @@ -150,8 +141,8 @@ struct neigh_table nd_tbl = {
>   };
>   EXPORT_SYMBOL_GPL(nd_tbl);
>   
> -static void ndisc_fill_addr_option(struct sk_buff *skb, int type, void *data,
> -				   int data_len)
> +void ndisc_fill_addr_option(struct sk_buff *skb, int type, void *data,
> +			    int data_len)
>   {
>   	int pad   = ndisc_addr_option_pad(skb->dev->type);
>   	int space = ndisc_opt_addr_space(skb->dev, data_len);
> @@ -171,6 +162,7 @@ static void ndisc_fill_addr_option(struct sk_buff *skb, int type, void *data,
>   	if (space > 0)
>   		memset(opt, 0, space);
>   }
> +EXPORT_SYMBOL(ndisc_fill_addr_option);

Hmm, one export in this files uses EXPORT_SYMBOL while another one uses  
EXPORT_SYMBOL_GPL. Not sure which one is preferred in this file.
>   
>   static struct nd_opt_hdr *ndisc_next_option(struct nd_opt_hdr *cur,
>   					    struct nd_opt_hdr *end)
> @@ -378,8 +370,7 @@ static void pndisc_destructor(struct pneigh_entry *n)
>   	ipv6_dev_mc_dec(dev, &maddr);
>   }
>   
> -static struct sk_buff *ndisc_alloc_skb(struct net_device *dev,
> -				       int len)
> +struct sk_buff *ndisc_alloc_skb(struct net_device *dev, int len)
>   {
>   	int hlen = LL_RESERVED_SPACE(dev);
>   	int tlen = dev->needed_tailroom;
> @@ -406,6 +397,7 @@ static struct sk_buff *ndisc_alloc_skb(struct net_device *dev,
>   
>   	return skb;
>   }
> +EXPORT_SYMBOL(ndisc_alloc_skb);

Same here.
>   
>   static void ip6_nd_hdr(struct sk_buff *skb,
>   		       const struct in6_addr *saddr,
> @@ -428,9 +420,8 @@ static void ip6_nd_hdr(struct sk_buff *skb,
>   	hdr->daddr = *daddr;
>   }
>   
> -static void ndisc_send_skb(struct sk_buff *skb,
> -			   const struct in6_addr *daddr,
> -			   const struct in6_addr *saddr)
> +void ndisc_send_skb(struct sk_buff *skb, const struct in6_addr *daddr,
> +		    const struct in6_addr *saddr)
>   {
>   	struct dst_entry *dst = skb_dst(skb);
>   	struct net *net = dev_net(skb->dev);
> @@ -479,6 +470,7 @@ static void ndisc_send_skb(struct sk_buff *skb,
>   
>   	rcu_read_unlock();
>   }
> +EXPORT_SYMBOL(ndisc_send_skb);

And here.
>   
>   static void ip6_ndisc_send_na(struct net_device *dev,
>   			      const struct in6_addr *daddr,
> @@ -692,8 +684,7 @@ static void ndisc_solicit(struct neighbour *neigh, struct sk_buff *skb)
>   	}
>   }
>   
> -static int pndisc_is_router(const void *pkey,
> -			    struct net_device *dev)
> +int pndisc_is_router(const void *pkey, struct net_device *dev)
>   {
>   	struct pneigh_entry *n;
>   	int ret = -1;
> @@ -706,6 +697,7 @@ static int pndisc_is_router(const void *pkey,
>   
>   	return ret;
>   }
> +EXPORT_SYMBOL(pndisc_is_router);
>   
>   static void ip6_ndisc_recv_ns(struct sk_buff *skb)
>   {

Reviewed-by: Stefan Schmidt<stefan@osg.samsung.com>

regards
Stefan Schmidt
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Alexander Aring May 8, 2016, 10:46 a.m. UTC | #3
Hi,

On 05/02/2016 09:39 PM, Hannes Frederic Sowa wrote:
> On 20.04.2016 10:19, Alexander Aring wrote:
>> This patch exports some neighbour discovery functions which can be used
>> by 6lowpan neighbour discovery ops functionality then.
>>
>> Cc: David S. Miller <davem@davemloft.net>
>> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
>> Cc: James Morris <jmorris@namei.org>
>> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
>> Cc: Patrick McHardy <kaber@trash.net>
>> Signed-off-by: Alexander Aring <aar@pengutronix.de>
>> ---
>>  include/net/ndisc.h | 16 ++++++++++++++++
>>  net/ipv6/addrconf.c |  1 +
>>  net/ipv6/ndisc.c    | 28 ++++++++++------------------
>>  3 files changed, 27 insertions(+), 18 deletions(-)
>>
>> diff --git a/include/net/ndisc.h b/include/net/ndisc.h
>> index 14ed016..35a4396 100644
>> --- a/include/net/ndisc.h
>> +++ b/include/net/ndisc.h
>> @@ -53,6 +53,15 @@ enum {
>>  
>>  #include <net/neighbour.h>
>>  
>> +/* Set to 3 to get tracing... */
>> +#define ND_DEBUG 1
>> +
>> +#define ND_PRINTK(val, level, fmt, ...)				\
>> +do {								\
>> +	if (val <= ND_DEBUG)					\
>> +		net_##level##_ratelimited(fmt, ##__VA_ARGS__);	\
>> +} while (0)
>> +
> 
> If the debug messages are well thought out, I think we could install
> them always on debug level.
> 
> There are valid users now, so
> 

Not sure if I understand you correctly here. Is this patch is fine or I
should remove ND_DEBUG, because it's handled by "net_##level##_ratelimited"
and the debug level will be handled then by other debug level settings
then?

Thanks.

- Alex
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diff mbox

Patch

diff --git a/include/net/ndisc.h b/include/net/ndisc.h
index 14ed016..35a4396 100644
--- a/include/net/ndisc.h
+++ b/include/net/ndisc.h
@@ -53,6 +53,15 @@  enum {
 
 #include <net/neighbour.h>
 
+/* Set to 3 to get tracing... */
+#define ND_DEBUG 1
+
+#define ND_PRINTK(val, level, fmt, ...)				\
+do {								\
+	if (val <= ND_DEBUG)					\
+		net_##level##_ratelimited(fmt, ##__VA_ARGS__);	\
+} while (0)
+
 struct ctl_table;
 struct inet6_dev;
 struct net_device;
@@ -267,6 +276,13 @@  int ndisc_late_init(void);
 void ndisc_late_cleanup(void);
 void ndisc_cleanup(void);
 
+void ndisc_fill_addr_option(struct sk_buff *skb, int type, void *data,
+			    int data_len);
+struct sk_buff *ndisc_alloc_skb(struct net_device *dev, int len);
+void ndisc_send_skb(struct sk_buff *skb, const struct in6_addr *daddr,
+		    const struct in6_addr *saddr);
+int pndisc_is_router(const void *pkey, struct net_device *dev);
+
 int ndisc_rcv(struct sk_buff *skb);
 
 void ndisc_send_rs(struct net_device *dev,
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index a2ef04b..8f05ef8 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -1775,6 +1775,7 @@  struct inet6_ifaddr *ipv6_get_ifaddr(struct net *net, const struct in6_addr *add
 
 	return result;
 }
+EXPORT_SYMBOL(ipv6_get_ifaddr);
 
 /* Gets referenced address, destroys ifaddr */
 
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index 297080a..dc8bfec 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -73,15 +73,6 @@ 
 #include <linux/netfilter.h>
 #include <linux/netfilter_ipv6.h>
 
-/* Set to 3 to get tracing... */
-#define ND_DEBUG 1
-
-#define ND_PRINTK(val, level, fmt, ...)				\
-do {								\
-	if (val <= ND_DEBUG)					\
-		net_##level##_ratelimited(fmt, ##__VA_ARGS__);	\
-} while (0)
-
 static u32 ndisc_hash(const void *pkey,
 		      const struct net_device *dev,
 		      __u32 *hash_rnd);
@@ -150,8 +141,8 @@  struct neigh_table nd_tbl = {
 };
 EXPORT_SYMBOL_GPL(nd_tbl);
 
-static void ndisc_fill_addr_option(struct sk_buff *skb, int type, void *data,
-				   int data_len)
+void ndisc_fill_addr_option(struct sk_buff *skb, int type, void *data,
+			    int data_len)
 {
 	int pad   = ndisc_addr_option_pad(skb->dev->type);
 	int space = ndisc_opt_addr_space(skb->dev, data_len);
@@ -171,6 +162,7 @@  static void ndisc_fill_addr_option(struct sk_buff *skb, int type, void *data,
 	if (space > 0)
 		memset(opt, 0, space);
 }
+EXPORT_SYMBOL(ndisc_fill_addr_option);
 
 static struct nd_opt_hdr *ndisc_next_option(struct nd_opt_hdr *cur,
 					    struct nd_opt_hdr *end)
@@ -378,8 +370,7 @@  static void pndisc_destructor(struct pneigh_entry *n)
 	ipv6_dev_mc_dec(dev, &maddr);
 }
 
-static struct sk_buff *ndisc_alloc_skb(struct net_device *dev,
-				       int len)
+struct sk_buff *ndisc_alloc_skb(struct net_device *dev, int len)
 {
 	int hlen = LL_RESERVED_SPACE(dev);
 	int tlen = dev->needed_tailroom;
@@ -406,6 +397,7 @@  static struct sk_buff *ndisc_alloc_skb(struct net_device *dev,
 
 	return skb;
 }
+EXPORT_SYMBOL(ndisc_alloc_skb);
 
 static void ip6_nd_hdr(struct sk_buff *skb,
 		       const struct in6_addr *saddr,
@@ -428,9 +420,8 @@  static void ip6_nd_hdr(struct sk_buff *skb,
 	hdr->daddr = *daddr;
 }
 
-static void ndisc_send_skb(struct sk_buff *skb,
-			   const struct in6_addr *daddr,
-			   const struct in6_addr *saddr)
+void ndisc_send_skb(struct sk_buff *skb, const struct in6_addr *daddr,
+		    const struct in6_addr *saddr)
 {
 	struct dst_entry *dst = skb_dst(skb);
 	struct net *net = dev_net(skb->dev);
@@ -479,6 +470,7 @@  static void ndisc_send_skb(struct sk_buff *skb,
 
 	rcu_read_unlock();
 }
+EXPORT_SYMBOL(ndisc_send_skb);
 
 static void ip6_ndisc_send_na(struct net_device *dev,
 			      const struct in6_addr *daddr,
@@ -692,8 +684,7 @@  static void ndisc_solicit(struct neighbour *neigh, struct sk_buff *skb)
 	}
 }
 
-static int pndisc_is_router(const void *pkey,
-			    struct net_device *dev)
+int pndisc_is_router(const void *pkey, struct net_device *dev)
 {
 	struct pneigh_entry *n;
 	int ret = -1;
@@ -706,6 +697,7 @@  static int pndisc_is_router(const void *pkey,
 
 	return ret;
 }
+EXPORT_SYMBOL(pndisc_is_router);
 
 static void ip6_ndisc_recv_ns(struct sk_buff *skb)
 {