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Subject[PATCH net-next 5/9] net: icmp: introduce function icmpv6_param_prob_reason()
Date
From: Menglong Dong <imagedong@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 <imagedong@tencent.com>
Reviewed-by: Jiang Biao <benbjiang@tencent.com>
Reviewed-by: Hao Peng <flyingpeng@tencent.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 01c8003c9fc9..61770220774e 100644
--- a/net/ipv6/icmp.c
+++ b/net/ipv6/icmp.c
@@ -629,12 +629,13 @@ 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
--
2.35.1
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