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Commit 47670b76 authored by Julian Anastasov's avatar Julian Anastasov Committed by David S. Miller
Browse files

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: default avatarJulian Anastasov <ja@ssi.bg>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 797fd391

include/net/inet_sock.h

+1 −1
Original line number Diff line number Diff line
@@ -238,7 +238,7 @@ static inline __u8 inet_sk_flowi_flags(const struct sock *sk) 
{

	__u8 flags = 0;



	if (inet_sk(sk)->transparent)

	if (inet_sk(sk)->transparent || inet_sk(sk)->hdrincl)

		flags |= FLOWI_FLAG_ANYSRC;

	if (sk->sk_protocol == IPPROTO_TCP)

		flags |= FLOWI_FLAG_PRECOW_METRICS;

net/ipv4/raw.c

+2 −1
Original line number Diff line number Diff line
@@ -563,7 +563,8 @@ static int raw_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, 
	flowi4_init_output(&fl4, ipc.oif, sk->sk_mark, tos,

			   RT_SCOPE_UNIVERSE,

			   inet->hdrincl ? IPPROTO_RAW : sk->sk_protocol,

			   FLOWI_FLAG_CAN_SLEEP, daddr, saddr, 0, 0);

			   inet_sk_flowi_flags(sk) | FLOWI_FLAG_CAN_SLEEP,

			   daddr, saddr, 0, 0);



	if (!inet->hdrincl) {

		err = raw_probe_proto_opt(&fl4, msg);