From: Xin Long lucien.xin@gmail.com
stable inclusion from linux-4.19.200 commit 53012dd6ca2f3c9420b5cc447279375a90290fb4
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[ Upstream commit 1d11fa231cabeae09a95cb3e4cf1d9dd34e00f08 ]
The doc draft-stewart-tsvwg-sctp-ipv4-00 that restricts 198 addresses was never published. These addresses as private addresses should be allowed to use in SCTP.
As Michael Tuexen suggested, this patch is to move 198 addresses from unusable to private scope.
Reported-by: Sérgio surkamp@gmail.com Signed-off-by: Xin Long lucien.xin@gmail.com Acked-by: Marcelo Ricardo Leitner marcelo.leitner@gmail.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- include/net/sctp/constants.h | 4 +--- net/sctp/protocol.c | 3 ++- 2 files changed, 3 insertions(+), 4 deletions(-)
diff --git a/include/net/sctp/constants.h b/include/net/sctp/constants.h index 48d74674d5e95..bc22e44ffcdf7 100644 --- a/include/net/sctp/constants.h +++ b/include/net/sctp/constants.h @@ -348,8 +348,7 @@ enum { #define SCTP_SCOPE_POLICY_MAX SCTP_SCOPE_POLICY_LINK
/* Based on IPv4 scoping <draft-stewart-tsvwg-sctp-ipv4-00.txt>, - * SCTP IPv4 unusable addresses: 0.0.0.0/8, 224.0.0.0/4, 198.18.0.0/24, - * 192.88.99.0/24. + * SCTP IPv4 unusable addresses: 0.0.0.0/8, 224.0.0.0/4, 192.88.99.0/24. * Also, RFC 8.4, non-unicast addresses are not considered valid SCTP * addresses. */ @@ -357,7 +356,6 @@ enum { ((htonl(INADDR_BROADCAST) == a) || \ ipv4_is_multicast(a) || \ ipv4_is_zeronet(a) || \ - ipv4_is_test_198(a) || \ ipv4_is_anycast_6to4(a))
/* Flags used for the bind address copy functions. */ diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c index dd51256582556..7207a9769f1a9 100644 --- a/net/sctp/protocol.c +++ b/net/sctp/protocol.c @@ -412,7 +412,8 @@ static enum sctp_scope sctp_v4_scope(union sctp_addr *addr) retval = SCTP_SCOPE_LINK; } else if (ipv4_is_private_10(addr->v4.sin_addr.s_addr) || ipv4_is_private_172(addr->v4.sin_addr.s_addr) || - ipv4_is_private_192(addr->v4.sin_addr.s_addr)) { + ipv4_is_private_192(addr->v4.sin_addr.s_addr) || + ipv4_is_test_198(addr->v4.sin_addr.s_addr)) { retval = SCTP_SCOPE_PRIVATE; } else { retval = SCTP_SCOPE_GLOBAL;