From: Menglong Dong <imaged...@tencent.com>

In order to add the skb drop reasons support to icmpv6_param_prob(),
introduce the function icmpv6_param_prob_reason() and make
icmpv6_param_prob() an inline call to it. This new function will be
used in the following patches.

Signed-off-by: Menglong Dong <imaged...@tencent.com>
Reviewed-by: Jiang Biao <benbji...@tencent.com>
Reviewed-by: Hao Peng <flyingp...@tencent.com>
Signed-off-by: David S. Miller <da...@davemloft.net>
Acked-by: Nikolay Borisov <nbori...@suse.com>
Signed-off-by: Nikolay Borisov <nikolay.bori...@virtuozzo.com>
---
 include/linux/icmpv6.h | 11 +++++++++--
 net/ipv6/icmp.c        |  7 ++++---
 2 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/include/linux/icmpv6.h b/include/linux/icmpv6.h
index 9055cb380ee2..db0f4fcfdaf4 100644
--- a/include/linux/icmpv6.h
+++ b/include/linux/icmpv6.h
@@ -79,8 +79,9 @@ extern int                            icmpv6_init(void);
 extern int                             icmpv6_err_convert(u8 type, u8 code,
                                                           int *err);
 extern void                            icmpv6_cleanup(void);
-extern void                            icmpv6_param_prob(struct sk_buff *skb,
-                                                         u8 code, int pos);
+extern void                            icmpv6_param_prob_reason(struct sk_buff 
*skb,
+                                                                u8 code, int 
pos,
+                                                                enum 
skb_drop_reason reason);
 
 struct flowi6;
 struct in6_addr;
@@ -91,6 +92,12 @@ extern void                          icmpv6_flow_init(struct 
sock *sk,
                                                         const struct in6_addr 
*daddr,
                                                         int oif);
 
+static inline void icmpv6_param_prob(struct sk_buff *skb, u8 code, int pos)
+{
+       icmpv6_param_prob_reason(skb, code, pos,
+                                SKB_DROP_REASON_NOT_SPECIFIED);
+}
+
 static inline bool icmpv6_is_err(int type)
 {
        switch (type) {
diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c
index 0f8deff124b4..a7dcf56ea5a6 100644
--- a/net/ipv6/icmp.c
+++ b/net/ipv6/icmp.c
@@ -636,12 +636,13 @@ void icmp6_send(struct sk_buff *skb, u8 type, u8 code, 
__u32 info,
 }
 EXPORT_SYMBOL(icmp6_send);
 
-/* Slightly more convenient version of icmp6_send.
+/* Slightly more convenient version of icmp6_send with drop reasons.
  */
-void icmpv6_param_prob(struct sk_buff *skb, u8 code, int pos)
+void icmpv6_param_prob_reason(struct sk_buff *skb, u8 code, int pos,
+                             enum skb_drop_reason reason)
 {
        icmp6_send(skb, ICMPV6_PARAMPROB, code, pos, NULL, IP6CB(skb));
-       kfree_skb(skb);
+       kfree_skb_reason(skb, reason);
 }
 
 /* Generate icmpv6 with type/code ICMPV6_DEST_UNREACH/ICMPV6_ADDR_UNREACH
-- 
2.34.1

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