diff options
| author | YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> | 2005-09-08 10:19:03 +0900 |
|---|---|---|
| committer | YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> | 2005-09-08 10:19:03 +0900 |
| commit | 41a1f8ea4fbfcdc4232f023732584aae2220de31 (patch) | |
| tree | 9939686b354ced0b22d81efcbc12f5ed90372b09 /net/ipv6/datagram.c | |
| parent | 333fad5364d6b457c8d837f7d05802d2aaf8a961 (diff) | |
| download | lwn-41a1f8ea4fbfcdc4232f023732584aae2220de31.tar.gz lwn-41a1f8ea4fbfcdc4232f023732584aae2220de31.zip | |
[IPV6]: Support IPV6_{RECV,}TCLASS socket options / ancillary data.
Based on patch from David L Stevens <dlstevens@us.ibm.com>
Signed-off-by: David L Stevens <dlstevens@us.ibm.com>
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Diffstat (limited to 'net/ipv6/datagram.c')
| -rw-r--r-- | net/ipv6/datagram.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c index 832476bbc5cb..157cec648032 100644 --- a/net/ipv6/datagram.c +++ b/net/ipv6/datagram.c @@ -390,6 +390,11 @@ int datagram_recv_ctl(struct sock *sk, struct msghdr *msg, struct sk_buff *skb) put_cmsg(msg, SOL_IPV6, IPV6_HOPLIMIT, sizeof(hlim), &hlim); } + if (np->rxopt.bits.rxtclass) { + int tclass = (ntohl(*(u32 *)skb->nh.ipv6h) >> 20) & 0xff; + put_cmsg(msg, SOL_IPV6, IPV6_TCLASS, sizeof(tclass), &tclass); + } + if (np->rxopt.bits.rxflow && (*(u32*)skb->nh.raw & IPV6_FLOWINFO_MASK)) { u32 flowinfo = *(u32*)skb->nh.raw & IPV6_FLOWINFO_MASK; put_cmsg(msg, SOL_IPV6, IPV6_FLOWINFO, sizeof(flowinfo), &flowinfo); @@ -479,7 +484,7 @@ int datagram_recv_ctl(struct sock *sk, struct msghdr *msg, struct sk_buff *skb) int datagram_send_ctl(struct msghdr *msg, struct flowi *fl, struct ipv6_txoptions *opt, - int *hlimit) + int *hlimit, int *tclass) { struct in6_pktinfo *src_info; struct cmsghdr *cmsg; @@ -682,6 +687,24 @@ int datagram_send_ctl(struct msghdr *msg, struct flowi *fl, *hlimit = *(int *)CMSG_DATA(cmsg); break; + case IPV6_TCLASS: + { + int tc; + + err = -EINVAL; + if (cmsg->cmsg_len != CMSG_LEN(sizeof(int))) { + goto exit_f; + } + + tc = *(int *)CMSG_DATA(cmsg); + if (tc < 0 || tc > 0xff) + goto exit_f; + + err = 0; + *tclass = tc; + + break; + } default: LIMIT_NETDEBUG(KERN_DEBUG "invalid cmsg type: %d\n", cmsg->cmsg_type); |