ipv4: route non-local sources for raw socket
The raw sockets can provide source address for routing but their privileges are not considered. We can provide non-local source address, make sure the FLOWI_FLAG_ANYSRC flag is set if socket has privileges for this, i.e. based on hdrincl (IP_HDRINCL) and transparent flags. Signed-off-by: Julian Anastasov <ja@ssi.bg> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -238,7 +238,7 @@ static inline __u8 inet_sk_flowi_flags(const struct sock *sk)
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{
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__u8 flags = 0;
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if (inet_sk(sk)->transparent)
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if (inet_sk(sk)->transparent || inet_sk(sk)->hdrincl)
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flags |= FLOWI_FLAG_ANYSRC;
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if (sk->sk_protocol == IPPROTO_TCP)
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flags |= FLOWI_FLAG_PRECOW_METRICS;
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@ -563,7 +563,8 @@ static int raw_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
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flowi4_init_output(&fl4, ipc.oif, sk->sk_mark, tos,
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RT_SCOPE_UNIVERSE,
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inet->hdrincl ? IPPROTO_RAW : sk->sk_protocol,
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FLOWI_FLAG_CAN_SLEEP, daddr, saddr, 0, 0);
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inet_sk_flowi_flags(sk) | FLOWI_FLAG_CAN_SLEEP,
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daddr, saddr, 0, 0);
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if (!inet->hdrincl) {
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err = raw_probe_proto_opt(&fl4, msg);
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