icmp: introduce helper for nat'd source address in network device context

This introduces a helper function to be called only by network drivers that wraps calls to icmp[v6]_send in a conntrack transformation, in case NAT has been used. We don't want to pollute the non-driver path, though, so we introduce this as a helper to be called by places that actually make use of this, as suggested by Florian.

Jason A. Donenfeld committed 6 years ago

Commit 0b417131 parent 07134cf4 files · +79 −0Browse files

Showing the changes to include/linux (1 of 4 files). Show all

Unified · Split

include/linux/icmpv6.h+6−0

@@ -31,6 +31,12 @@ static inline void icmpv6_send(struct sk_buff *skb, · 30 unmodified lines
31	31	}
32	32	#endif
33	33
	34	+#if IS_ENABLED(CONFIG_NF_NAT)
	35	+void icmpv6_ndo_send(struct sk_buff *skb_in, u8 type, u8 code, __u32 info);
	36	+#else
	37	+#define icmpv6_ndo_send icmpv6_send
	38	+#endif
	39	+
34	40	extern int icmpv6_init(void);
35	41	extern int icmpv6_err_convert(u8 type, u8 code,
36	42	int *err);