X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=net%2Fipv6%2Fdatagram.c;h=99a6eb23378bcc2d3b079ce3bc5ff7efd8e9ff58;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=8b1cf3ea49cc05b2114c1dc3d6a22b93737163fa;hpb=9bf4aaab3e101692164d49b7ca357651eb691cb6;p=linux-2.6.git diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c index 8b1cf3ea4..99a6eb233 100644 --- a/net/ipv6/datagram.c +++ b/net/ipv6/datagram.c @@ -13,6 +13,7 @@ * 2 of the License, or (at your option) any later version. */ +#include #include #include #include @@ -29,6 +30,7 @@ #include #include #include +#include #include #include @@ -36,9 +38,9 @@ int ip6_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len) { struct sockaddr_in6 *usin = (struct sockaddr_in6 *) uaddr; - struct inet_opt *inet = inet_sk(sk); + struct inet_sock *inet = inet_sk(sk); struct ipv6_pinfo *np = inet6_sk(sk); - struct in6_addr *daddr; + struct in6_addr *daddr, *final_p = NULL, final; struct dst_entry *dst; struct flowi fl; struct ip6_flowlabel *flowlabel = NULL; @@ -157,16 +159,25 @@ ipv4_connected: if (flowlabel) { if (flowlabel->opt && flowlabel->opt->srcrt) { struct rt0_hdr *rt0 = (struct rt0_hdr *) flowlabel->opt->srcrt; + ipv6_addr_copy(&final, &fl.fl6_dst); ipv6_addr_copy(&fl.fl6_dst, rt0->addr); + final_p = &final; } } else if (np->opt && np->opt->srcrt) { struct rt0_hdr *rt0 = (struct rt0_hdr *)np->opt->srcrt; + ipv6_addr_copy(&final, &fl.fl6_dst); ipv6_addr_copy(&fl.fl6_dst, rt0->addr); + final_p = &final; } err = ip6_dst_lookup(sk, &dst, &fl); if (err) goto out; + if (final_p) + ipv6_addr_copy(&fl.fl6_dst, final_p); + + if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0) + goto out; /* source address lookup done in ip6_dst_lookup */ @@ -179,7 +190,7 @@ ipv4_connected: } ip6_dst_store(sk, dst, - !ipv6_addr_cmp(&fl.fl6_dst, &np->daddr) ? + ipv6_addr_equal(&fl.fl6_dst, &np->daddr) ? &np->daddr : NULL); sk->sk_state = TCP_ESTABLISHED; @@ -324,7 +335,7 @@ int ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len) if (ipv6_addr_type(&sin->sin6_addr) & IPV6_ADDR_LINKLOCAL) sin->sin6_scope_id = IP6CB(skb)->iif; } else { - struct inet_opt *inet = inet_sk(sk); + struct inet_sock *inet = inet_sk(sk); ipv6_addr_set(&sin->sin6_addr, 0, 0, htonl(0xffff), @@ -342,14 +353,14 @@ int ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len) err = copied; /* Reset and regenerate socket error */ - spin_lock_irq(&sk->sk_error_queue.lock); + spin_lock_bh(&sk->sk_error_queue.lock); sk->sk_err = 0; if ((skb2 = skb_peek(&sk->sk_error_queue)) != NULL) { sk->sk_err = SKB_EXT_ERR(skb2)->ee.ee_errno; - spin_unlock_irq(&sk->sk_error_queue.lock); + spin_unlock_bh(&sk->sk_error_queue.lock); sk->sk_error_report(sk); } else { - spin_unlock_irq(&sk->sk_error_queue.lock); + spin_unlock_bh(&sk->sk_error_queue.lock); } out_free_skb: @@ -378,32 +389,101 @@ 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); } + + /* HbH is allowed only once */ if (np->rxopt.bits.hopopts && opt->hop) { u8 *ptr = skb->nh.raw + opt->hop; put_cmsg(msg, SOL_IPV6, IPV6_HOPOPTS, (ptr[1]+1)<<3, ptr); } - if (np->rxopt.bits.dstopts && opt->dst0) { + + if (opt->lastopt && + (np->rxopt.bits.dstopts || np->rxopt.bits.srcrt)) { + /* + * Silly enough, but we need to reparse in order to + * report extension headers (except for HbH) + * in order. + * + * Also note that IPV6_RECVRTHDRDSTOPTS is NOT + * (and WILL NOT be) defined because + * IPV6_RECVDSTOPTS is more generic. --yoshfuji + */ + unsigned int off = sizeof(struct ipv6hdr); + u8 nexthdr = skb->nh.ipv6h->nexthdr; + + while (off <= opt->lastopt) { + unsigned len; + u8 *ptr = skb->nh.raw + off; + + switch(nexthdr) { + case IPPROTO_DSTOPTS: + nexthdr = ptr[0]; + len = (ptr[1] + 1) << 3; + if (np->rxopt.bits.dstopts) + put_cmsg(msg, SOL_IPV6, IPV6_DSTOPTS, len, ptr); + break; + case IPPROTO_ROUTING: + nexthdr = ptr[0]; + len = (ptr[1] + 1) << 3; + if (np->rxopt.bits.srcrt) + put_cmsg(msg, SOL_IPV6, IPV6_RTHDR, len, ptr); + break; + case IPPROTO_AH: + nexthdr = ptr[0]; + len = (ptr[1] + 2) << 2; + break; + default: + nexthdr = ptr[0]; + len = (ptr[1] + 1) << 3; + break; + } + + off += len; + } + } + + /* socket options in old style */ + if (np->rxopt.bits.rxoinfo) { + struct in6_pktinfo src_info; + + src_info.ipi6_ifindex = opt->iif; + ipv6_addr_copy(&src_info.ipi6_addr, &skb->nh.ipv6h->daddr); + put_cmsg(msg, SOL_IPV6, IPV6_2292PKTINFO, sizeof(src_info), &src_info); + } + if (np->rxopt.bits.rxohlim) { + int hlim = skb->nh.ipv6h->hop_limit; + put_cmsg(msg, SOL_IPV6, IPV6_2292HOPLIMIT, sizeof(hlim), &hlim); + } + if (np->rxopt.bits.ohopopts && opt->hop) { + u8 *ptr = skb->nh.raw + opt->hop; + put_cmsg(msg, SOL_IPV6, IPV6_2292HOPOPTS, (ptr[1]+1)<<3, ptr); + } + if (np->rxopt.bits.odstopts && opt->dst0) { u8 *ptr = skb->nh.raw + opt->dst0; - put_cmsg(msg, SOL_IPV6, IPV6_DSTOPTS, (ptr[1]+1)<<3, ptr); + put_cmsg(msg, SOL_IPV6, IPV6_2292DSTOPTS, (ptr[1]+1)<<3, ptr); } - if (np->rxopt.bits.srcrt && opt->srcrt) { + if (np->rxopt.bits.osrcrt && opt->srcrt) { struct ipv6_rt_hdr *rthdr = (struct ipv6_rt_hdr *)(skb->nh.raw + opt->srcrt); - put_cmsg(msg, SOL_IPV6, IPV6_RTHDR, (rthdr->hdrlen+1) << 3, rthdr); + put_cmsg(msg, SOL_IPV6, IPV6_2292RTHDR, (rthdr->hdrlen+1) << 3, rthdr); } - if (np->rxopt.bits.dstopts && opt->dst1) { + if (np->rxopt.bits.odstopts && opt->dst1) { u8 *ptr = skb->nh.raw + opt->dst1; - put_cmsg(msg, SOL_IPV6, IPV6_DSTOPTS, (ptr[1]+1)<<3, ptr); + put_cmsg(msg, SOL_IPV6, IPV6_2292DSTOPTS, (ptr[1]+1)<<3, ptr); } return 0; } 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; @@ -416,9 +496,7 @@ int datagram_send_ctl(struct msghdr *msg, struct flowi *fl, int addr_type; struct net_device *dev = NULL; - if (cmsg->cmsg_len < sizeof(struct cmsghdr) || - (unsigned long)(((char*)cmsg - (char*)msg->msg_control) - + cmsg->cmsg_len) > msg->msg_controllen) { + if (!CMSG_OK(msg, cmsg)) { err = -EINVAL; goto exit_f; } @@ -428,6 +506,7 @@ int datagram_send_ctl(struct msghdr *msg, struct flowi *fl, switch (cmsg->cmsg_type) { case IPV6_PKTINFO: + case IPV6_2292PKTINFO: if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct in6_pktinfo))) { err = -EINVAL; goto exit_f; @@ -482,6 +561,7 @@ int datagram_send_ctl(struct msghdr *msg, struct flowi *fl, fl->fl6_flowlabel = IPV6_FLOWINFO_MASK & *(u32 *)CMSG_DATA(cmsg); break; + case IPV6_2292HOPOPTS: case IPV6_HOPOPTS: if (opt->hopopt || cmsg->cmsg_len < CMSG_LEN(sizeof(struct ipv6_opt_hdr))) { err = -EINVAL; @@ -502,7 +582,7 @@ int datagram_send_ctl(struct msghdr *msg, struct flowi *fl, opt->hopopt = hdr; break; - case IPV6_DSTOPTS: + case IPV6_2292DSTOPTS: if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct ipv6_opt_hdr))) { err = -EINVAL; goto exit_f; @@ -526,6 +606,33 @@ int datagram_send_ctl(struct msghdr *msg, struct flowi *fl, opt->dst1opt = hdr; break; + case IPV6_DSTOPTS: + case IPV6_RTHDRDSTOPTS: + if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct ipv6_opt_hdr))) { + err = -EINVAL; + goto exit_f; + } + + hdr = (struct ipv6_opt_hdr *)CMSG_DATA(cmsg); + len = ((hdr->hdrlen + 1) << 3); + if (cmsg->cmsg_len < CMSG_LEN(len)) { + err = -EINVAL; + goto exit_f; + } + if (!capable(CAP_NET_RAW)) { + err = -EPERM; + goto exit_f; + } + if (cmsg->cmsg_type == IPV6_DSTOPTS) { + opt->opt_flen += len; + opt->dst1opt = hdr; + } else { + opt->opt_nflen += len; + opt->dst0opt = hdr; + } + break; + + case IPV6_2292RTHDR: case IPV6_RTHDR: if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct ipv6_rt_hdr))) { err = -EINVAL; @@ -558,7 +665,7 @@ int datagram_send_ctl(struct msghdr *msg, struct flowi *fl, opt->opt_nflen += len; opt->srcrt = rthdr; - if (opt->dst1opt) { + if (cmsg->cmsg_type == IPV6_2292RTHDR && opt->dst1opt) { int dsthdrlen = ((opt->dst1opt->hdrlen+1)<<3); opt->opt_nflen += dsthdrlen; @@ -569,6 +676,7 @@ int datagram_send_ctl(struct msghdr *msg, struct flowi *fl, break; + case IPV6_2292HOPLIMIT: case IPV6_HOPLIMIT: if (cmsg->cmsg_len != CMSG_LEN(sizeof(int))) { err = -EINVAL; @@ -578,9 +686,27 @@ 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( - printk(KERN_DEBUG "invalid cmsg type: %d\n", cmsg->cmsg_type)); + LIMIT_NETDEBUG(KERN_DEBUG "invalid cmsg type: %d\n", + cmsg->cmsg_type); err = -EINVAL; break; };