net: inet_diag: export IPV6_V6ONLY sockopt
For AF_INET6 sockets, the value of struct ipv6_pinfo.ipv6only is exported to userspace. It indicates whether a socket bound to in6addr_any listens on IPv4 as well as IPv6. Since the socket is natively IPv6, it is not listed by e.g. 'ss -l -4'. This patch is accompanied by an appropriate one for iproute2 to enable the additional information in 'ss -e'. Signed-off-by: Phil Sutter <phil@nwl.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -112,9 +112,10 @@ enum {
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INET_DIAG_SHUTDOWN,
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INET_DIAG_DCTCPINFO,
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INET_DIAG_PROTOCOL, /* response attribute only */
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INET_DIAG_SKV6ONLY,
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};
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#define INET_DIAG_MAX INET_DIAG_PROTOCOL
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#define INET_DIAG_MAX INET_DIAG_SKV6ONLY
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/* INET_DIAG_MEM */
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@ -151,6 +151,10 @@ int inet_sk_diag_fill(struct sock *sk, struct inet_connection_sock *icsk,
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if (nla_put_u8(skb, INET_DIAG_TCLASS,
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inet6_sk(sk)->tclass) < 0)
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goto errout;
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if (ipv6_only_sock(sk) &&
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nla_put_u8(skb, INET_DIAG_SKV6ONLY, 1))
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goto errout;
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}
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#endif
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