diff options
Diffstat (limited to 'net/ipv6')
-rw-r--r-- | net/ipv6/addrconf.c | 18 | ||||
-rw-r--r-- | net/ipv6/addrlabel.c | 6 | ||||
-rw-r--r-- | net/ipv6/netfilter/ip6t_NPT.c | 2 | ||||
-rw-r--r-- | net/ipv6/netfilter/nf_conntrack_reasm.c | 12 | ||||
-rw-r--r-- | net/ipv6/reassembly.c | 31 | ||||
-rw-r--r-- | net/ipv6/route.c | 6 | ||||
-rw-r--r-- | net/ipv6/syncookies.c | 3 | ||||
-rw-r--r-- | net/ipv6/tcp_ipv6.c | 63 | ||||
-rw-r--r-- | net/ipv6/udp.c | 8 |
9 files changed, 72 insertions, 77 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index fa36a677490..1b9f4f25212 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -544,8 +544,7 @@ static const struct nla_policy devconf_ipv6_policy[NETCONFA_MAX+1] = { }; static int inet6_netconf_get_devconf(struct sk_buff *in_skb, - struct nlmsghdr *nlh, - void *arg) + struct nlmsghdr *nlh) { struct net *net = sock_net(in_skb->sk); struct nlattr *tb[NETCONFA_MAX+1]; @@ -622,6 +621,8 @@ static int inet6_netconf_dump_devconf(struct sk_buff *skb, idx = 0; head = &net->dev_index_head[h]; rcu_read_lock(); + cb->seq = atomic_read(&net->ipv6.dev_addr_genid) ^ + net->dev_base_seq; hlist_for_each_entry_rcu(dev, head, index_hlist) { if (idx < s_idx) goto cont; @@ -639,6 +640,7 @@ static int inet6_netconf_dump_devconf(struct sk_buff *skb, rcu_read_unlock(); goto done; } + nl_dump_check_consistent(cb, nlmsg_hdr(skb)); cont: idx++; } @@ -3578,7 +3580,7 @@ static const struct nla_policy ifa_ipv6_policy[IFA_MAX+1] = { }; static int -inet6_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) +inet6_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh) { struct net *net = sock_net(skb->sk); struct ifaddrmsg *ifm; @@ -3644,7 +3646,7 @@ static int inet6_addr_modify(struct inet6_ifaddr *ifp, u8 ifa_flags, } static int -inet6_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) +inet6_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh) { struct net *net = sock_net(skb->sk); struct ifaddrmsg *ifm; @@ -3875,6 +3877,7 @@ static int in6_dump_addrs(struct inet6_dev *idev, struct sk_buff *skb, NLM_F_MULTI); if (err <= 0) break; + nl_dump_check_consistent(cb, nlmsg_hdr(skb)); } break; } @@ -3932,6 +3935,7 @@ static int inet6_dump_addr(struct sk_buff *skb, struct netlink_callback *cb, s_ip_idx = ip_idx = cb->args[2]; rcu_read_lock(); + cb->seq = atomic_read(&net->ipv6.dev_addr_genid) ^ net->dev_base_seq; for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) { idx = 0; head = &net->dev_index_head[h]; @@ -3983,8 +3987,7 @@ static int inet6_dump_ifacaddr(struct sk_buff *skb, struct netlink_callback *cb) return inet6_dump_addr(skb, cb, type); } -static int inet6_rtm_getaddr(struct sk_buff *in_skb, struct nlmsghdr *nlh, - void *arg) +static int inet6_rtm_getaddr(struct sk_buff *in_skb, struct nlmsghdr *nlh) { struct net *net = sock_net(in_skb->sk); struct ifaddrmsg *ifm; @@ -4409,6 +4412,8 @@ errout: static void __ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp) { + struct net *net = dev_net(ifp->idev->dev); + inet6_ifa_notify(event ? : RTM_NEWADDR, ifp); switch (event) { @@ -4434,6 +4439,7 @@ static void __ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp) dst_free(&ifp->rt->dst); break; } + atomic_inc(&net->ipv6.dev_addr_genid); } static void ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp) diff --git a/net/ipv6/addrlabel.c b/net/ipv6/addrlabel.c index 6f226c850c9..f083a583a05 100644 --- a/net/ipv6/addrlabel.c +++ b/net/ipv6/addrlabel.c @@ -414,8 +414,7 @@ static const struct nla_policy ifal_policy[IFAL_MAX+1] = { [IFAL_LABEL] = { .len = sizeof(u32), }, }; -static int ip6addrlbl_newdel(struct sk_buff *skb, struct nlmsghdr *nlh, - void *arg) +static int ip6addrlbl_newdel(struct sk_buff *skb, struct nlmsghdr *nlh) { struct net *net = sock_net(skb->sk); struct ifaddrlblmsg *ifal; @@ -530,8 +529,7 @@ static inline int ip6addrlbl_msgsize(void) + nla_total_size(4); /* IFAL_LABEL */ } -static int ip6addrlbl_get(struct sk_buff *in_skb, struct nlmsghdr* nlh, - void *arg) +static int ip6addrlbl_get(struct sk_buff *in_skb, struct nlmsghdr* nlh) { struct net *net = sock_net(in_skb->sk); struct ifaddrlblmsg *ifal; diff --git a/net/ipv6/netfilter/ip6t_NPT.c b/net/ipv6/netfilter/ip6t_NPT.c index 59286a1de85..938e0b7ea1b 100644 --- a/net/ipv6/netfilter/ip6t_NPT.c +++ b/net/ipv6/netfilter/ip6t_NPT.c @@ -109,6 +109,7 @@ ip6t_dnpt_tg(struct sk_buff *skb, const struct xt_action_param *par) static struct xt_target ip6t_npt_target_reg[] __read_mostly = { { .name = "SNPT", + .table = "mangle", .target = ip6t_snpt_tg, .targetsize = sizeof(struct ip6t_npt_tginfo), .checkentry = ip6t_npt_checkentry, @@ -119,6 +120,7 @@ static struct xt_target ip6t_npt_target_reg[] __read_mostly = { }, { .name = "DNPT", + .table = "mangle", .target = ip6t_dnpt_tg, .targetsize = sizeof(struct ip6t_npt_tginfo), .checkentry = ip6t_npt_checkentry, diff --git a/net/ipv6/netfilter/nf_conntrack_reasm.c b/net/ipv6/netfilter/nf_conntrack_reasm.c index 54087e96d7b..6700069949d 100644 --- a/net/ipv6/netfilter/nf_conntrack_reasm.c +++ b/net/ipv6/netfilter/nf_conntrack_reasm.c @@ -14,6 +14,8 @@ * 2 of the License, or (at your option) any later version. */ +#define pr_fmt(fmt) "IPv6-nf: " fmt + #include <linux/errno.h> #include <linux/types.h> #include <linux/string.h> @@ -180,13 +182,11 @@ static inline struct frag_queue *fq_find(struct net *net, __be32 id, q = inet_frag_find(&net->nf_frag.frags, &nf_frags, &arg, hash); local_bh_enable(); - if (q == NULL) - goto oom; - + if (IS_ERR_OR_NULL(q)) { + inet_frag_maybe_warn_overflow(q, pr_fmt()); + return NULL; + } return container_of(q, struct frag_queue, q); - -oom: - return NULL; } diff --git a/net/ipv6/reassembly.c b/net/ipv6/reassembly.c index 3c6a77290c6..e6e44cef8db 100644 --- a/net/ipv6/reassembly.c +++ b/net/ipv6/reassembly.c @@ -26,6 +26,9 @@ * YOSHIFUJI,H. @USAGI Always remove fragment header to * calculate ICV correctly. */ + +#define pr_fmt(fmt) "IPv6: " fmt + #include <linux/errno.h> #include <linux/types.h> #include <linux/string.h> @@ -55,6 +58,7 @@ #include <net/ndisc.h> #include <net/addrconf.h> #include <net/inet_frag.h> +#include <net/inet_ecn.h> struct ip6frag_skb_cb { @@ -64,6 +68,10 @@ struct ip6frag_skb_cb #define FRAG6_CB(skb) ((struct ip6frag_skb_cb*)((skb)->cb)) +static inline u8 ip6_frag_ecn(const struct ipv6hdr *ipv6h) +{ + return 1 << (ipv6_get_dsfield(ipv6h) & INET_ECN_MASK); +} static struct inet_frags ip6_frags; @@ -116,6 +124,7 @@ void ip6_frag_init(struct inet_frag_queue *q, void *a) fq->user = arg->user; fq->saddr = *arg->src; fq->daddr = *arg->dst; + fq->ecn = arg->ecn; } EXPORT_SYMBOL(ip6_frag_init); @@ -170,7 +179,8 @@ static void ip6_frag_expire(unsigned long data) } static __inline__ struct frag_queue * -fq_find(struct net *net, __be32 id, const struct in6_addr *src, const struct in6_addr *dst) +fq_find(struct net *net, __be32 id, const struct in6_addr *src, + const struct in6_addr *dst, u8 ecn) { struct inet_frag_queue *q; struct ip6_create_arg arg; @@ -180,14 +190,16 @@ fq_find(struct net *net, __be32 id, const struct in6_addr *src, const struct in6 arg.user = IP6_DEFRAG_LOCAL_DELIVER; arg.src = src; arg.dst = dst; + arg.ecn = ecn; read_lock(&ip6_frags.lock); hash = inet6_hash_frag(id, src, dst, ip6_frags.rnd); q = inet_frag_find(&net->ipv6.frags, &ip6_frags, &arg, hash); - if (q == NULL) + if (IS_ERR_OR_NULL(q)) { + inet_frag_maybe_warn_overflow(q, pr_fmt()); return NULL; - + } return container_of(q, struct frag_queue, q); } @@ -198,6 +210,7 @@ static int ip6_frag_queue(struct frag_queue *fq, struct sk_buff *skb, struct net_device *dev; int offset, end; struct net *net = dev_net(skb_dst(skb)->dev); + u8 ecn; if (fq->q.last_in & INET_FRAG_COMPLETE) goto err; @@ -215,6 +228,8 @@ static int ip6_frag_queue(struct frag_queue *fq, struct sk_buff *skb, return -1; } + ecn = ip6_frag_ecn(ipv6_hdr(skb)); + if (skb->ip_summed == CHECKSUM_COMPLETE) { const unsigned char *nh = skb_network_header(skb); skb->csum = csum_sub(skb->csum, @@ -315,6 +330,7 @@ found: } fq->q.stamp = skb->tstamp; fq->q.meat += skb->len; + fq->ecn |= ecn; add_frag_mem_limit(&fq->q, skb->truesize); /* The first fragment. @@ -358,9 +374,14 @@ static int ip6_frag_reasm(struct frag_queue *fq, struct sk_buff *prev, int payload_len; unsigned int nhoff; int sum_truesize; + u8 ecn; inet_frag_kill(&fq->q, &ip6_frags); + ecn = ip_frag_ecn_table[fq->ecn]; + if (unlikely(ecn == 0xff)) + goto out_fail; + /* Make the one we just received the head. */ if (prev) { head = prev->next; @@ -459,6 +480,7 @@ static int ip6_frag_reasm(struct frag_queue *fq, struct sk_buff *prev, head->dev = dev; head->tstamp = fq->q.stamp; ipv6_hdr(head)->payload_len = htons(payload_len); + ipv6_change_dsfield(ipv6_hdr(head), 0xff, ecn); IP6CB(head)->nhoff = nhoff; /* Yes, and fold redundant checksum back. 8) */ @@ -522,7 +544,8 @@ static int ipv6_frag_rcv(struct sk_buff *skb) IP6_ADD_STATS_BH(net, ip6_dst_idev(skb_dst(skb)), IPSTATS_MIB_REASMFAILS, evicted); - fq = fq_find(net, fhdr->identification, &hdr->saddr, &hdr->daddr); + fq = fq_find(net, fhdr->identification, &hdr->saddr, &hdr->daddr, + ip6_frag_ecn(hdr)); if (fq != NULL) { int ret; diff --git a/net/ipv6/route.c b/net/ipv6/route.c index e5fe0041adf..ad0aa6b0b86 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -2355,7 +2355,7 @@ beginning: return last_err; } -static int inet6_rtm_delroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg) +static int inet6_rtm_delroute(struct sk_buff *skb, struct nlmsghdr* nlh) { struct fib6_config cfg; int err; @@ -2370,7 +2370,7 @@ static int inet6_rtm_delroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *a return ip6_route_del(&cfg); } -static int inet6_rtm_newroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg) +static int inet6_rtm_newroute(struct sk_buff *skb, struct nlmsghdr* nlh) { struct fib6_config cfg; int err; @@ -2562,7 +2562,7 @@ int rt6_dump_route(struct rt6_info *rt, void *p_arg) prefix, 0, NLM_F_MULTI); } -static int inet6_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr* nlh, void *arg) +static int inet6_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr* nlh) { struct net *net = sock_net(in_skb->sk); struct nlattr *tb[RTA_MAX+1]; diff --git a/net/ipv6/syncookies.c b/net/ipv6/syncookies.c index 8a0848b60b3..d5dda20bd71 100644 --- a/net/ipv6/syncookies.c +++ b/net/ipv6/syncookies.c @@ -149,7 +149,6 @@ static inline int cookie_check(const struct sk_buff *skb, __u32 cookie) struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb) { struct tcp_options_received tcp_opt; - const u8 *hash_location; struct inet_request_sock *ireq; struct inet6_request_sock *ireq6; struct tcp_request_sock *treq; @@ -177,7 +176,7 @@ struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb) /* check for timestamp cookie support */ memset(&tcp_opt, 0, sizeof(tcp_opt)); - tcp_parse_options(skb, &tcp_opt, &hash_location, 0, NULL); + tcp_parse_options(skb, &tcp_opt, 0, NULL); if (!cookie_check_timestamp(&tcp_opt, sock_net(sk), &ecn_ok)) goto out; diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index 9b6460055df..1033d2b1d81 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -389,6 +389,13 @@ static void tcp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt, } if (type == ICMPV6_PKT_TOOBIG) { + /* We are not interested in TCP_LISTEN and open_requests + * (SYN-ACKs send out by Linux are always <576bytes so + * they should go through unfragmented). + */ + if (sk->sk_state == TCP_LISTEN) + goto out; + tp->mtu_info = ntohl(info); if (!sock_owned_by_user(sk)) tcp_v6_mtu_reduced(sk); @@ -454,7 +461,6 @@ out: static int tcp_v6_send_synack(struct sock *sk, struct dst_entry *dst, struct flowi6 *fl6, struct request_sock *req, - struct request_values *rvp, u16 queue_mapping) { struct inet6_request_sock *treq = inet6_rsk(req); @@ -466,7 +472,7 @@ static int tcp_v6_send_synack(struct sock *sk, struct dst_entry *dst, if (!dst && (dst = inet6_csk_route_req(sk, fl6, req)) == NULL) goto done; - skb = tcp_make_synack(sk, dst, req, rvp, NULL); + skb = tcp_make_synack(sk, dst, req, NULL); if (skb) { __tcp_v6_send_check(skb, &treq->loc_addr, &treq->rmt_addr); @@ -481,13 +487,12 @@ done: return err; } -static int tcp_v6_rtx_synack(struct sock *sk, struct request_sock *req, - struct request_values *rvp) +static int tcp_v6_rtx_synack(struct sock *sk, struct request_sock *req) { struct flowi6 fl6; int res; - res = tcp_v6_send_synack(sk, NULL, &fl6, req, rvp, 0); + res = tcp_v6_send_synack(sk, NULL, &fl6, req, 0); if (!res) TCP_INC_STATS_BH(sock_net(sk), TCP_MIB_RETRANSSEGS); return res; @@ -940,9 +945,7 @@ static struct sock *tcp_v6_hnd_req(struct sock *sk,struct sk_buff *skb) */ static int tcp_v6_conn_request(struct sock *sk, struct sk_buff *skb) { - struct tcp_extend_values tmp_ext; struct tcp_options_received tmp_opt; - const u8 *hash_location; struct request_sock *req; struct inet6_request_sock *treq; struct ipv6_pinfo *np = inet6_sk(sk); @@ -980,50 +983,7 @@ static int tcp_v6_conn_request(struct sock *sk, struct sk_buff *skb) tcp_clear_options(&tmp_opt); tmp_opt.mss_clamp = IPV6_MIN_MTU - sizeof(struct tcphdr) - sizeof(struct ipv6hdr); tmp_opt.user_mss = tp->rx_opt.user_mss; - tcp_parse_options(skb, &tmp_opt, &hash_location, 0, NULL); - - if (tmp_opt.cookie_plus > 0 && - tmp_opt.saw_tstamp && - !tp->rx_opt.cookie_out_never && - (sysctl_tcp_cookie_size > 0 || - (tp->cookie_values != NULL && - tp->cookie_values->cookie_desired > 0))) { - u8 *c; - u32 *d; - u32 *mess = &tmp_ext.cookie_bakery[COOKIE_DIGEST_WORDS]; - int l = tmp_opt.cookie_plus - TCPOLEN_COOKIE_BASE; - - if (tcp_cookie_generator(&tmp_ext.cookie_bakery[0]) != 0) - goto drop_and_free; - - /* Secret recipe starts with IP addresses */ - d = (__force u32 *)&ipv6_hdr(skb)->daddr.s6_addr32[0]; - *mess++ ^= *d++; - *mess++ ^= *d++; - *mess++ ^= *d++; - *mess++ ^= *d++; - d = (__force u32 *)&ipv6_hdr(skb)->saddr.s6_addr32[0]; - *mess++ ^= *d++; - *mess++ ^= *d++; - *mess++ ^= *d++; - *mess++ ^= *d++; - - /* plus variable length Initiator Cookie */ - c = (u8 *)mess; - while (l-- > 0) - *c++ ^= *hash_location++; - - want_cookie = false; /* not our kind of cookie */ - tmp_ext.cookie_out_never = 0; /* false */ - tmp_ext.cookie_plus = tmp_opt.cookie_plus; - } else if (!tp->rx_opt.cookie_in_always) { - /* redundant indications, but ensure initialization. */ - tmp_ext.cookie_out_never = 1; /* true */ - tmp_ext.cookie_plus = 0; - } else { - goto drop_and_free; - } - tmp_ext.cookie_in_always = tp->rx_opt.cookie_in_always; + tcp_parse_options(skb, &tmp_opt, 0, NULL); if (want_cookie && !tmp_opt.saw_tstamp) tcp_clear_options(&tmp_opt); @@ -1101,7 +1061,6 @@ have_isn: goto drop_and_release; if (tcp_v6_send_synack(sk, dst, &fl6, req, - (struct request_values *)&tmp_ext, skb_get_queue_mapping(skb)) || want_cookie) goto drop_and_free; diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c index 3ed57eced37..da6019b6373 100644 --- a/net/ipv6/udp.c +++ b/net/ipv6/udp.c @@ -1286,10 +1286,18 @@ do_confirm: void udpv6_destroy_sock(struct sock *sk) { + struct udp_sock *up = udp_sk(sk); lock_sock(sk); udp_v6_flush_pending_frames(sk); release_sock(sk); + if (static_key_false(&udpv6_encap_needed) && up->encap_type) { + void (*encap_destroy)(struct sock *sk); + encap_destroy = ACCESS_ONCE(up->encap_destroy); + if (encap_destroy) + encap_destroy(sk); + } + inet6_destroy_sock(sk); } |