diff options
Diffstat (limited to 'net/dccp/ipv6.c')
-rw-r--r-- | net/dccp/ipv6.c | 80 |
1 files changed, 53 insertions, 27 deletions
diff --git a/net/dccp/ipv6.c b/net/dccp/ipv6.c index 1e5e08cc0bfc..e57b43006074 100644 --- a/net/dccp/ipv6.c +++ b/net/dccp/ipv6.c @@ -27,13 +27,20 @@ #include <net/ip6_checksum.h> #include <net/xfrm.h> #include <net/secure_seq.h> +#include <net/netns/generic.h> #include <net/sock.h> #include "dccp.h" #include "ipv6.h" #include "feat.h" -/* The per-net dccp.v6_ctl_sk is used for sending RSTs and ACKs */ +struct dccp_v6_pernet { + struct sock *v6_ctl_sk; +}; + +static unsigned int dccp_v6_pernet_id __read_mostly; + +/* The per-net v6_ctl_sk is used for sending RSTs and ACKs */ static const struct inet_connection_sock_af_ops dccp_ipv6_mapped; static const struct inet_connection_sock_af_ops dccp_ipv6_af_ops; @@ -165,7 +172,7 @@ static int dccp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt, * Wake people up to see the error * (see connect in sock.c) */ - sk->sk_error_report(sk); + sk_error_report(sk); dccp_done(sk); } else sk->sk_err_soft = err; @@ -174,7 +181,7 @@ static int dccp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt, if (!sock_owned_by_user(sk) && np->recverr) { sk->sk_err = err; - sk->sk_error_report(sk); + sk_error_report(sk); } else sk->sk_err_soft = err; @@ -203,7 +210,7 @@ static int dccp_v6_send_response(const struct sock *sk, struct request_sock *req fl6.flowi6_oif = ireq->ir_iif; fl6.fl6_dport = ireq->ir_rmt_port; fl6.fl6_sport = htons(ireq->ir_num); - security_req_classify_flow(req, flowi6_to_flowi(&fl6)); + security_req_classify_flow(req, flowi6_to_flowi_common(&fl6)); rcu_read_lock(); @@ -254,7 +261,8 @@ static void dccp_v6_ctl_send_reset(const struct sock *sk, struct sk_buff *rxskb) struct sk_buff *skb; struct flowi6 fl6; struct net *net = dev_net(skb_dst(rxskb)->dev); - struct sock *ctl_sk = net->dccp.v6_ctl_sk; + struct dccp_v6_pernet *pn; + struct sock *ctl_sk; struct dst_entry *dst; if (dccp_hdr(rxskb)->dccph_type == DCCP_PKT_RESET) @@ -263,6 +271,8 @@ static void dccp_v6_ctl_send_reset(const struct sock *sk, struct sk_buff *rxskb) if (!ipv6_unicast_destination(rxskb)) return; + pn = net_generic(net, dccp_v6_pernet_id); + ctl_sk = pn->v6_ctl_sk; skb = dccp_ctl_make_reset(ctl_sk, rxskb); if (skb == NULL) return; @@ -279,7 +289,7 @@ static void dccp_v6_ctl_send_reset(const struct sock *sk, struct sk_buff *rxskb) fl6.flowi6_oif = inet6_iif(rxskb); fl6.fl6_dport = dccp_hdr(skb)->dccph_dport; fl6.fl6_sport = dccp_hdr(skb)->dccph_sport; - security_skb_classify_flow(rxskb, flowi6_to_flowi(&fl6)); + security_skb_classify_flow(rxskb, flowi6_to_flowi_common(&fl6)); /* sk = NULL, but it is safe for now. RST socket required. */ dst = ip6_dst_lookup_flow(sock_net(ctl_sk), ctl_sk, &fl6, NULL); @@ -319,6 +329,11 @@ static int dccp_v6_conn_request(struct sock *sk, struct sk_buff *skb) if (!ipv6_unicast_destination(skb)) return 0; /* discard, don't send a reset here */ + if (ipv6_addr_v4mapped(&ipv6_hdr(skb)->saddr)) { + __IP6_INC_STATS(sock_net(sk), NULL, IPSTATS_MIB_INHDRERRORS); + return 0; + } + if (dccp_bad_service_code(sk, service)) { dcb->dccpd_reset_code = DCCP_RESET_CODE_BAD_SERVICE_CODE; goto drop; @@ -359,10 +374,10 @@ static int dccp_v6_conn_request(struct sock *sk, struct sk_buff *skb) refcount_inc(&skb->users); ireq->pktopts = skb; } - ireq->ir_iif = sk->sk_bound_dev_if; + ireq->ir_iif = READ_ONCE(sk->sk_bound_dev_if); /* So that link locals have meaning */ - if (!sk->sk_bound_dev_if && + if (!ireq->ir_iif && ipv6_addr_type(&ireq->ir_v6_rmt_addr) & IPV6_ADDR_LINKLOCAL) ireq->ir_iif = inet6_iif(skb); @@ -533,7 +548,7 @@ static struct sock *dccp_v6_request_recv_sock(const struct sock *sk, dccp_done(newsk); goto out; } - *own_req = inet_ehash_nolisten(newsk, req_to_sk(req_unhash)); + *own_req = inet_ehash_nolisten(newsk, req_to_sk(req_unhash), NULL); /* Clone pktoptions received with SYN, if we own the req */ if (*own_req && ireq->pktopts) { newnp->pktoptions = skb_clone(ireq->pktopts, GFP_ATOMIC); @@ -877,7 +892,7 @@ static int dccp_v6_connect(struct sock *sk, struct sockaddr *uaddr, SOCK_DEBUG(sk, "connect: ipv4 mapped\n"); - if (__ipv6_only_sock(sk)) + if (ipv6_only_sock(sk)) return -ENETUNREACH; sin.sin_family = AF_INET; @@ -907,7 +922,7 @@ static int dccp_v6_connect(struct sock *sk, struct sockaddr *uaddr, fl6.flowi6_oif = sk->sk_bound_dev_if; fl6.fl6_dport = usin->sin6_port; fl6.fl6_sport = inet->inet_sport; - security_sk_classify_flow(sk, flowi6_to_flowi(&fl6)); + security_sk_classify_flow(sk, flowi6_to_flowi_common(&fl6)); opt = rcu_dereference_protected(np->opt, lockdep_sock_is_held(sk)); final_p = fl6_update_dst(&fl6, opt, &final); @@ -919,8 +934,26 @@ static int dccp_v6_connect(struct sock *sk, struct sockaddr *uaddr, } if (saddr == NULL) { + struct inet_bind_hashbucket *prev_addr_hashbucket = NULL; + struct in6_addr prev_v6_rcv_saddr; + + if (icsk->icsk_bind2_hash) { + prev_addr_hashbucket = inet_bhashfn_portaddr(&dccp_hashinfo, + sk, sock_net(sk), + inet->inet_num); + prev_v6_rcv_saddr = sk->sk_v6_rcv_saddr; + } + saddr = &fl6.saddr; sk->sk_v6_rcv_saddr = *saddr; + + if (prev_addr_hashbucket) { + err = inet_bhash2_update_saddr(prev_addr_hashbucket, sk); + if (err) { + sk->sk_v6_rcv_saddr = prev_v6_rcv_saddr; + goto failure; + } + } } /* set the source address */ @@ -970,10 +1003,6 @@ static const struct inet_connection_sock_af_ops dccp_ipv6_af_ops = { .getsockopt = ipv6_getsockopt, .addr2sockaddr = inet6_csk_addr2sockaddr, .sockaddr_len = sizeof(struct sockaddr_in6), -#ifdef CONFIG_COMPAT - .compat_setsockopt = compat_ipv6_setsockopt, - .compat_getsockopt = compat_ipv6_getsockopt, -#endif }; /* @@ -990,10 +1019,6 @@ static const struct inet_connection_sock_af_ops dccp_ipv6_mapped = { .getsockopt = ipv6_getsockopt, .addr2sockaddr = inet6_csk_addr2sockaddr, .sockaddr_len = sizeof(struct sockaddr_in6), -#ifdef CONFIG_COMPAT - .compat_setsockopt = compat_ipv6_setsockopt, - .compat_getsockopt = compat_ipv6_getsockopt, -#endif }; /* NOTE: A lot of things set to zero explicitly by call to @@ -1049,10 +1074,6 @@ static struct proto dccp_v6_prot = { .rsk_prot = &dccp6_request_sock_ops, .twsk_prot = &dccp6_timewait_sock_ops, .h.hashinfo = &dccp_hashinfo, -#ifdef CONFIG_COMPAT - .compat_setsockopt = compat_dccp_setsockopt, - .compat_getsockopt = compat_dccp_getsockopt, -#endif }; static const struct inet6_protocol dccp_v6_protocol = { @@ -1082,8 +1103,7 @@ static const struct proto_ops inet6_dccp_ops = { .mmap = sock_no_mmap, .sendpage = sock_no_sendpage, #ifdef CONFIG_COMPAT - .compat_setsockopt = compat_sock_common_setsockopt, - .compat_getsockopt = compat_sock_common_getsockopt, + .compat_ioctl = inet6_compat_ioctl, #endif }; @@ -1097,16 +1117,20 @@ static struct inet_protosw dccp_v6_protosw = { static int __net_init dccp_v6_init_net(struct net *net) { + struct dccp_v6_pernet *pn = net_generic(net, dccp_v6_pernet_id); + if (dccp_hashinfo.bhash == NULL) return -ESOCKTNOSUPPORT; - return inet_ctl_sock_create(&net->dccp.v6_ctl_sk, PF_INET6, + return inet_ctl_sock_create(&pn->v6_ctl_sk, PF_INET6, SOCK_DCCP, IPPROTO_DCCP, net); } static void __net_exit dccp_v6_exit_net(struct net *net) { - inet_ctl_sock_destroy(net->dccp.v6_ctl_sk); + struct dccp_v6_pernet *pn = net_generic(net, dccp_v6_pernet_id); + + inet_ctl_sock_destroy(pn->v6_ctl_sk); } static void __net_exit dccp_v6_exit_batch(struct list_head *net_exit_list) @@ -1118,6 +1142,8 @@ static struct pernet_operations dccp_v6_ops = { .init = dccp_v6_init_net, .exit = dccp_v6_exit_net, .exit_batch = dccp_v6_exit_batch, + .id = &dccp_v6_pernet_id, + .size = sizeof(struct dccp_v6_pernet), }; static int __init dccp_v6_init(void) |