X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=net%2Fipv6%2Fraw.c;h=9479fbd223c7afe4d539775089f6ee8e867a7afb;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=15b862d8acabc621edde195034cb2b9e72737bfd;hpb=16c70f8c1b54b61c3b951b6fb220df250fe09b32;p=linux-2.6.git diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c index 15b862d8a..9479fbd22 100644 --- a/net/ipv6/raw.c +++ b/net/ipv6/raw.c @@ -50,6 +50,9 @@ #include #include #include +#ifdef CONFIG_IPV6_MIP6 +#include +#endif #include #include @@ -169,8 +172,32 @@ int ipv6_raw_deliver(struct sk_buff *skb, int nexthdr) sk = __raw_v6_lookup(sk, nexthdr, daddr, saddr, IP6CB(skb)->iif); while (sk) { + int filtered; + delivered = 1; - if (nexthdr != IPPROTO_ICMPV6 || !icmpv6_filter(sk, skb)) { + switch (nexthdr) { + case IPPROTO_ICMPV6: + filtered = icmpv6_filter(sk, skb); + break; +#ifdef CONFIG_IPV6_MIP6 + case IPPROTO_MH: + /* XXX: To validate MH only once for each packet, + * this is placed here. It should be after checking + * xfrm policy, however it doesn't. The checking xfrm + * policy is placed in rawv6_rcv() because it is + * required for each socket. + */ + filtered = mip6_mh_filter(sk, skb); + break; +#endif + default: + filtered = 0; + break; + } + + if (filtered < 0) + break; + if (filtered == 0) { struct sk_buff *clone = skb_clone(skb, GFP_ATOMIC); /* Not releasing hash table! */ @@ -193,7 +220,7 @@ static int rawv6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len) struct inet_sock *inet = inet_sk(sk); struct ipv6_pinfo *np = inet6_sk(sk); struct sockaddr_in6 *addr = (struct sockaddr_in6 *) uaddr; - __u32 v4addr = 0; + __be32 v4addr = 0; int addr_type; int err; @@ -263,7 +290,7 @@ out: void rawv6_err(struct sock *sk, struct sk_buff *skb, struct inet6_skb_parm *opt, - int type, int code, int offset, u32 info) + int type, int code, int offset, __be32 info) { struct inet_sock *inet = inet_sk(sk); struct ipv6_pinfo *np = inet6_sk(sk); @@ -334,7 +361,7 @@ int rawv6_rcv(struct sock *sk, struct sk_buff *skb) if (!rp->checksum) skb->ip_summed = CHECKSUM_UNNECESSARY; - if (skb->ip_summed == CHECKSUM_HW) { + if (skb->ip_summed == CHECKSUM_COMPLETE) { skb_postpull_rcsum(skb, skb->nh.raw, skb->h.raw - skb->nh.raw); if (!csum_ipv6_magic(&skb->nh.ipv6h->saddr, @@ -343,9 +370,9 @@ int rawv6_rcv(struct sock *sk, struct sk_buff *skb) skb->ip_summed = CHECKSUM_UNNECESSARY; } if (skb->ip_summed != CHECKSUM_UNNECESSARY) - skb->csum = ~csum_ipv6_magic(&skb->nh.ipv6h->saddr, + skb->csum = ~csum_unfold(csum_ipv6_magic(&skb->nh.ipv6h->saddr, &skb->nh.ipv6h->daddr, - skb->len, inet->num, 0); + skb->len, inet->num, 0)); if (inet->hdrincl) { if (skb_checksum_complete(skb)) { @@ -452,8 +479,8 @@ static int rawv6_push_pending_frames(struct sock *sk, struct flowi *fl, int offset; int len; int total_len; - u32 tmp_csum; - u16 csum; + __wsum tmp_csum; + __sum16 csum; if (!rp->checksum) goto send; @@ -503,16 +530,15 @@ static int rawv6_push_pending_frames(struct sock *sk, struct flowi *fl, /* in case cksum was not initialized */ if (unlikely(csum)) - tmp_csum = csum_sub(tmp_csum, csum); + tmp_csum = csum_sub(tmp_csum, csum_unfold(csum)); - tmp_csum = csum_ipv6_magic(&fl->fl6_src, + csum = csum_ipv6_magic(&fl->fl6_src, &fl->fl6_dst, total_len, fl->proto, tmp_csum); - if (tmp_csum == 0) - tmp_csum = -1; + if (csum == 0 && fl->proto == IPPROTO_UDP) + csum = CSUM_MANGLED_0; - csum = tmp_csum; if (skb_store_bits(skb, offset, &csum, 2)) BUG(); @@ -559,7 +585,7 @@ static int rawv6_send_hdrinc(struct sock *sk, void *from, int length, if (err) goto error_fault; - IP6_INC_STATS(IPSTATS_MIB_OUTREQUESTS); + IP6_INC_STATS(rt->rt6i_idev, IPSTATS_MIB_OUTREQUESTS); err = NF_HOOK(PF_INET6, NF_IP6_LOCAL_OUT, skb, NULL, rt->u.dst.dev, dst_output); if (err > 0) @@ -573,20 +599,23 @@ error_fault: err = -EFAULT; kfree_skb(skb); error: - IP6_INC_STATS(IPSTATS_MIB_OUTDISCARDS); + IP6_INC_STATS(rt->rt6i_idev, IPSTATS_MIB_OUTDISCARDS); return err; } -static void rawv6_probe_proto_opt(struct flowi *fl, struct msghdr *msg) +static int rawv6_probe_proto_opt(struct flowi *fl, struct msghdr *msg) { struct iovec *iov; u8 __user *type = NULL; u8 __user *code = NULL; +#ifdef CONFIG_IPV6_MIP6 + u8 len = 0; +#endif int probed = 0; int i; if (!msg->msg_iov) - return; + return 0; for (i = 0; i < msg->msg_iovlen; i++) { iov = &msg->msg_iov[i]; @@ -608,11 +637,27 @@ static void rawv6_probe_proto_opt(struct flowi *fl, struct msghdr *msg) code = iov->iov_base; if (type && code) { - get_user(fl->fl_icmp_type, type); - get_user(fl->fl_icmp_code, code); + if (get_user(fl->fl_icmp_type, type) || + get_user(fl->fl_icmp_code, code)) + return -EFAULT; probed = 1; } break; +#ifdef CONFIG_IPV6_MIP6 + case IPPROTO_MH: + if (iov->iov_base && iov->iov_len < 1) + break; + /* check if type field is readable or not. */ + if (iov->iov_len > 2 - len) { + u8 __user *p = iov->iov_base; + if (get_user(fl->fl_mh_type, &p[2 - len])) + return -EFAULT; + probed = 1; + } else + len += iov->iov_len; + + break; +#endif default: probed = 1; break; @@ -620,6 +665,7 @@ static void rawv6_probe_proto_opt(struct flowi *fl, struct msghdr *msg) if (probed) break; } + return 0; } static int rawv6_sendmsg(struct kiocb *iocb, struct sock *sk, @@ -642,9 +688,9 @@ static int rawv6_sendmsg(struct kiocb *iocb, struct sock *sk, int err; /* Rough check on arithmetic overflow, - better check is made in ip6_build_xmit + better check is made in ip6_append_data(). */ - if (len < 0) + if (len > INT_MAX) return -EMSGSIZE; /* Mirror BSD error message compatibility */ @@ -743,7 +789,9 @@ static int rawv6_sendmsg(struct kiocb *iocb, struct sock *sk, opt = ipv6_fixup_options(&opt_space, opt); fl.proto = proto; - rawv6_probe_proto_opt(&fl, msg); + err = rawv6_probe_proto_opt(&fl, msg); + if (err) + goto out; ipv6_addr_copy(&fl.fl6_dst, daddr); if (ipv6_addr_any(&fl.fl6_src) && !ipv6_addr_any(&np->saddr)) @@ -759,6 +807,7 @@ static int rawv6_sendmsg(struct kiocb *iocb, struct sock *sk, if (!fl.oif && ipv6_addr_is_multicast(&fl.fl6_dst)) fl.oif = np->mcast_oif; + security_sk_classify_flow(sk, &fl); err = ip6_dst_lookup(sk, &dst, &fl); if (err) @@ -805,7 +854,8 @@ back_from_confirm: } done: dst_release(dst); - release_sock(sk); + if (!inet->hdrincl) + release_sock(sk); out: fl6_sock_release(flowlabel); return err<0?err:len;