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| author | Remi Denis-Courmont <rdenis@simphalempin.com> | 2006-09-13 20:08:07 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-09-17 23:21:08 -0700 |
| commit | d0ee011f7290b51974e4d058cf4455a5ef91177d (patch) | |
| tree | acbf283e13a48a242ac255b88d0db4a68d122d0c | |
| parent | e012d51cbc41c5e603d7850c82acb0dad9e450dd (diff) | |
| download | blackbird-op-linux-d0ee011f7290b51974e4d058cf4455a5ef91177d.tar.gz blackbird-op-linux-d0ee011f7290b51974e4d058cf4455a5ef91177d.zip | |
[IPV6]: Accept -1 for IPV6_TCLASS
This patch should add support for -1 as "default" IPv6 traffic class,
as specified in IETF RFC3542 §6.5. Within the kernel, it seems tclass
< 0 is already handled, but setsockopt, getsockopt and recvmsg calls
won't accept it from userland.
Signed-off-by: Remi Denis-Courmont <rdenis@simphalempin.com>
Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/ipv6/datagram.c | 2 | ||||
| -rw-r--r-- | net/ipv6/ipv6_sockglue.c | 4 |
2 files changed, 4 insertions, 2 deletions
diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c index 99a6eb23378b..3b55b4c8e2d1 100644 --- a/net/ipv6/datagram.c +++ b/net/ipv6/datagram.c @@ -696,7 +696,7 @@ int datagram_send_ctl(struct msghdr *msg, struct flowi *fl, } tc = *(int *)CMSG_DATA(cmsg); - if (tc < 0 || tc > 0xff) + if (tc < -1 || tc > 0xff) goto exit_f; err = 0; diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c index 43327264e69c..a5eaaf693abf 100644 --- a/net/ipv6/ipv6_sockglue.c +++ b/net/ipv6/ipv6_sockglue.c @@ -362,7 +362,7 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname, break; case IPV6_TCLASS: - if (val < 0 || val > 0xff) + if (val < -1 || val > 0xff) goto e_inval; np->tclass = val; retv = 0; @@ -947,6 +947,8 @@ static int do_ipv6_getsockopt(struct sock *sk, int level, int optname, case IPV6_TCLASS: val = np->tclass; + if (val < 0) + val = 0; break; case IPV6_RECVTCLASS: |
