diff options
| author | Brian Haley <brian.haley@hp.com> | 2010-04-23 11:26:08 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-04-23 23:35:28 -0700 |
| commit | 13b52cd44670e3359055e9918d0e766d89836425 (patch) | |
| tree | 7685597f218fd02dab9abdb32ea0d4ec7c318027 /net/ipv6/datagram.c | |
| parent | 793b14731686595a741d9f47726ad8b9a235385a (diff) | |
| download | linux-13b52cd44670e3359055e9918d0e766d89836425.tar.gz | |
IPv6: Add dontfrag argument to relevant functions
Add dontfrag argument to relevant functions for
IPV6_DONTFRAG support, as well as allowing the value
to be passed-in via ancillary cmsg data.
Signed-off-by: Brian Haley <brian.haley@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/datagram.c')
| -rw-r--r-- | net/ipv6/datagram.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c index 622dc7939a1b3..f5076d349b185 100644 --- a/net/ipv6/datagram.c +++ b/net/ipv6/datagram.c @@ -497,7 +497,7 @@ int datagram_recv_ctl(struct sock *sk, struct msghdr *msg, struct sk_buff *skb) int datagram_send_ctl(struct net *net, struct msghdr *msg, struct flowi *fl, struct ipv6_txoptions *opt, - int *hlimit, int *tclass) + int *hlimit, int *tclass, int *dontfrag) { struct in6_pktinfo *src_info; struct cmsghdr *cmsg; @@ -737,6 +737,25 @@ int datagram_send_ctl(struct net *net, break; } + + case IPV6_DONTFRAG: + { + int df; + + err = -EINVAL; + if (cmsg->cmsg_len != CMSG_LEN(sizeof(int))) { + goto exit_f; + } + + df = *(int *)CMSG_DATA(cmsg); + if (df < 0 || df > 1) + goto exit_f; + + err = 0; + *dontfrag = df; + + break; + } default: LIMIT_NETDEBUG(KERN_DEBUG "invalid cmsg type: %d\n", cmsg->cmsg_type); |