diff options
| -rw-r--r-- | include/net/addrconf.h | 4 | ||||
| -rw-r--r-- | include/net/inet_hashtables.h | 5 | ||||
| -rw-r--r-- | include/net/udp.h | 1 | ||||
| -rw-r--r-- | net/ipv4/inet_connection_sock.c | 72 | ||||
| -rw-r--r-- | net/ipv4/inet_hashtables.c | 16 | ||||
| -rw-r--r-- | net/ipv4/udp.c | 58 | ||||
| -rw-r--r-- | net/ipv6/inet6_connection_sock.c | 4 | ||||
| -rw-r--r-- | net/ipv6/inet6_hashtables.c | 46 | ||||
| -rw-r--r-- | net/ipv6/udp.c | 2 |
9 files changed, 95 insertions, 113 deletions
diff --git a/include/net/addrconf.h b/include/net/addrconf.h index 8f998afc1384..17c6fd84e287 100644 --- a/include/net/addrconf.h +++ b/include/net/addrconf.h @@ -88,9 +88,7 @@ int __ipv6_get_lladdr(struct inet6_dev *idev, struct in6_addr *addr, u32 banned_flags); int ipv6_get_lladdr(struct net_device *dev, struct in6_addr *addr, u32 banned_flags); -int ipv4_rcv_saddr_equal(const struct sock *sk, const struct sock *sk2, - bool match_wildcard); -int ipv6_rcv_saddr_equal(const struct sock *sk, const struct sock *sk2, +int inet_rcv_saddr_equal(const struct sock *sk, const struct sock *sk2, bool match_wildcard); void addrconf_join_solict(struct net_device *dev, const struct in6_addr *addr); void addrconf_leave_solict(struct inet6_dev *idev, const struct in6_addr *addr); diff --git a/include/net/inet_hashtables.h b/include/net/inet_hashtables.h index 0574493e3899..756ed1692906 100644 --- a/include/net/inet_hashtables.h +++ b/include/net/inet_hashtables.h @@ -203,10 +203,7 @@ void inet_hashinfo_init(struct inet_hashinfo *h); bool inet_ehash_insert(struct sock *sk, struct sock *osk); bool inet_ehash_nolisten(struct sock *sk, struct sock *osk); -int __inet_hash(struct sock *sk, struct sock *osk, - int (*saddr_same)(const struct sock *sk1, - const struct sock *sk2, - bool match_wildcard)); +int __inet_hash(struct sock *sk, struct sock *osk); int inet_hash(struct sock *sk); void inet_unhash(struct sock *sk); diff --git a/include/net/udp.h b/include/net/udp.h index 1661791e8ca1..c9d8b8e848e0 100644 --- a/include/net/udp.h +++ b/include/net/udp.h @@ -204,7 +204,6 @@ static inline void udp_lib_close(struct sock *sk, long timeout) } int udp_lib_get_port(struct sock *sk, unsigned short snum, - int (*)(const struct sock *, const struct sock *, bool), unsigned int hash2_nulladdr); u32 udp_flow_hashrnd(void); diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c index 19ea045c50ed..ba597cb504ff 100644 --- a/net/ipv4/inet_connection_sock.c +++ b/net/ipv4/inet_connection_sock.c @@ -31,6 +31,78 @@ const char inet_csk_timer_bug_msg[] = "inet_csk BUG: unknown timer value\n"; EXPORT_SYMBOL(inet_csk_timer_bug_msg); #endif +#if IS_ENABLED(CONFIG_IPV6) +/* match_wildcard == true: IPV6_ADDR_ANY equals to any IPv6 addresses if IPv6 + * only, and any IPv4 addresses if not IPv6 only + * match_wildcard == false: addresses must be exactly the same, i.e. + * IPV6_ADDR_ANY only equals to IPV6_ADDR_ANY, + * and 0.0.0.0 equals to 0.0.0.0 only + */ +static int ipv6_rcv_saddr_equal(const struct sock *sk, const struct sock *sk2, + bool match_wildcard) +{ + const struct in6_addr *sk2_rcv_saddr6 = inet6_rcv_saddr(sk2); + int sk2_ipv6only = inet_v6_ipv6only(sk2); + int addr_type = ipv6_addr_type(&sk->sk_v6_rcv_saddr); + int addr_type2 = sk2_rcv_saddr6 ? ipv6_addr_type(sk2_rcv_saddr6) : IPV6_ADDR_MAPPED; + + /* if both are mapped, treat as IPv4 */ + if (addr_type == IPV6_ADDR_MAPPED && addr_type2 == IPV6_ADDR_MAPPED) { + if (!sk2_ipv6only) { + if (sk->sk_rcv_saddr == sk2->sk_rcv_saddr) + return 1; + if (!sk->sk_rcv_saddr || !sk2->sk_rcv_saddr) + return match_wildcard; + } + return 0; + } + + if (addr_type == IPV6_ADDR_ANY && addr_type2 == IPV6_ADDR_ANY) + return 1; + + if (addr_type2 == IPV6_ADDR_ANY && match_wildcard && + !(sk2_ipv6only && addr_type == IPV6_ADDR_MAPPED)) + return 1; + + if (addr_type == IPV6_ADDR_ANY && match_wildcard && + !(ipv6_only_sock(sk) && addr_type2 == IPV6_ADDR_MAPPED)) + return 1; + + if (sk2_rcv_saddr6 && + ipv6_addr_equal(&sk->sk_v6_rcv_saddr, sk2_rcv_saddr6)) + return 1; + + return 0; +} +#endif + +/* match_wildcard == true: 0.0.0.0 equals to any IPv4 addresses + * match_wildcard == false: addresses must be exactly the same, i.e. + * 0.0.0.0 only equals to 0.0.0.0 + */ +static int ipv4_rcv_saddr_equal(const struct sock *sk, const struct sock *sk2, + bool match_wildcard) +{ + if (!ipv6_only_sock(sk2)) { + if (sk->sk_rcv_saddr == sk2->sk_rcv_saddr) + return 1; + if (!sk->sk_rcv_saddr || !sk2->sk_rcv_saddr) + return match_wildcard; + } + return 0; +} + +int inet_rcv_saddr_equal(const struct sock *sk, const struct sock *sk2, + bool match_wildcard) +{ +#if IS_ENABLED(CONFIG_IPV6) + if (sk->sk_family == AF_INET6) + return ipv6_rcv_saddr_equal(sk, sk2, match_wildcard); +#endif + return ipv4_rcv_saddr_equal(sk, sk2, match_wildcard); +} +EXPORT_SYMBOL(inet_rcv_saddr_equal); + void inet_get_local_port_range(struct net *net, int *low, int *high) { unsigned int seq; diff --git a/net/ipv4/inet_hashtables.c b/net/ipv4/inet_hashtables.c index ca97835bfec4..2ef9b010bd34 100644 --- a/net/ipv4/inet_hashtables.c +++ b/net/ipv4/inet_hashtables.c @@ -435,10 +435,7 @@ bool inet_ehash_nolisten(struct sock *sk, struct sock *osk) EXPORT_SYMBOL_GPL(inet_ehash_nolisten); static int inet_reuseport_add_sock(struct sock *sk, - struct inet_listen_hashbucket *ilb, - int (*saddr_same)(const struct sock *sk1, - const struct sock *sk2, - bool match_wildcard)) + struct inet_listen_hashbucket *ilb) { struct inet_bind_bucket *tb = inet_csk(sk)->icsk_bind_hash; struct sock *sk2; @@ -451,7 +448,7 @@ static int inet_reuseport_add_sock(struct sock *sk, sk2->sk_bound_dev_if == sk->sk_bound_dev_if && inet_csk(sk2)->icsk_bind_hash == tb && sk2->sk_reuseport && uid_eq(uid, sock_i_uid(sk2)) && - saddr_same(sk, sk2, false)) + inet_rcv_saddr_equal(sk, sk2, false)) return reuseport_add_sock(sk, sk2); } @@ -461,10 +458,7 @@ static int inet_reuseport_add_sock(struct sock *sk, return 0; } -int __inet_hash(struct sock *sk, struct sock *osk, - int (*saddr_same)(const struct sock *sk1, - const struct sock *sk2, - bool match_wildcard)) +int __inet_hash(struct sock *sk, struct sock *osk) { struct inet_hashinfo *hashinfo = sk->sk_prot->h.hashinfo; struct inet_listen_hashbucket *ilb; @@ -479,7 +473,7 @@ int __inet_hash(struct sock *sk, struct sock *osk, spin_lock(&ilb->lock); if (sk->sk_reuseport) { - err = inet_reuseport_add_sock(sk, ilb, saddr_same); + err = inet_reuseport_add_sock(sk, ilb); if (err) goto unlock; } @@ -503,7 +497,7 @@ int inet_hash(struct sock *sk) if (sk->sk_state != TCP_CLOSE) { local_bh_disable(); - err = __inet_hash(sk, NULL, ipv4_rcv_saddr_equal); + err = __inet_hash(sk, NULL); local_bh_enable(); } diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index 4318d72e0248..d6dddcf59e79 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -137,11 +137,7 @@ EXPORT_SYMBOL(udp_memory_allocated); static int udp_lib_lport_inuse(struct net *net, __u16 num, const struct udp_hslot *hslot, unsigned long *bitmap, - struct sock *sk, - int (*saddr_comp)(const struct sock *sk1, - const struct sock *sk2, - bool match_wildcard), - unsigned int log) + struct sock *sk, unsigned int log) { struct sock *sk2; kuid_t uid = sock_i_uid(sk); @@ -153,7 +149,7 @@ static int udp_lib_lport_inuse(struct net *net, __u16 num, (!sk2->sk_reuse || !sk->sk_reuse) && (!sk2->sk_bound_dev_if || !sk->sk_bound_dev_if || sk2->sk_bound_dev_if == sk->sk_bound_dev_if) && - saddr_comp(sk, sk2, true)) { + inet_rcv_saddr_equal(sk, sk2, true)) { if (sk2->sk_reuseport && sk->sk_reuseport && !rcu_access_pointer(sk->sk_reuseport_cb) && uid_eq(uid, sock_i_uid(sk2))) { @@ -176,10 +172,7 @@ static int udp_lib_lport_inuse(struct net *net, __u16 num, */ static int udp_lib_lport_inuse2(struct net *net, __u16 num, struct udp_hslot *hslot2, - struct sock *sk, - int (*saddr_comp)(const struct sock *sk1, - const struct sock *sk2, - bool match_wildcard)) + struct sock *sk) { struct sock *sk2; kuid_t uid = sock_i_uid(sk); @@ -193,7 +186,7 @@ static int udp_lib_lport_inuse2(struct net *net, __u16 num, (!sk2->sk_reuse || !sk->sk_reuse) && (!sk2->sk_bound_dev_if || !sk->sk_bound_dev_if || sk2->sk_bound_dev_if == sk->sk_bound_dev_if) && - saddr_comp(sk, sk2, true)) { + inet_rcv_saddr_equal(sk, sk2, true)) { if (sk2->sk_reuseport && sk->sk_reuseport && !rcu_access_pointer(sk->sk_reuseport_cb) && uid_eq(uid, sock_i_uid(sk2))) { @@ -208,10 +201,7 @@ static int udp_lib_lport_inuse2(struct net *net, __u16 num, return res; } -static int udp_reuseport_add_sock(struct sock *sk, struct udp_hslot *hslot, - int (*saddr_same)(const struct sock *sk1, - const struct sock *sk2, - bool match_wildcard)) +static int udp_reuseport_add_sock(struct sock *sk, struct udp_hslot *hslot) { struct net *net = sock_net(sk); kuid_t uid = sock_i_uid(sk); @@ -225,7 +215,7 @@ static int udp_reuseport_add_sock(struct sock *sk, struct udp_hslot *hslot, (udp_sk(sk2)->udp_port_hash == udp_sk(sk)->udp_port_hash) && (sk2->sk_bound_dev_if == sk->sk_bound_dev_if) && sk2->sk_reuseport && uid_eq(uid, sock_i_uid(sk2)) && - (*saddr_same)(sk, sk2, false)) { + inet_rcv_saddr_equal(sk, sk2, false)) { return reuseport_add_sock(sk, sk2); } } @@ -241,14 +231,10 @@ static int udp_reuseport_add_sock(struct sock *sk, struct udp_hslot *hslot, * * @sk: socket struct in question * @snum: port number to look up - * @saddr_comp: AF-dependent comparison of bound local IP addresses * @hash2_nulladdr: AF-dependent hash value in secondary hash chains, * with NULL address */ int udp_lib_get_port(struct sock *sk, unsigned short snum, - int (*saddr_comp)(const struct sock *sk1, - const struct sock *sk2, - bool match_wildcard), unsigned int hash2_nulladdr) { struct udp_hslot *hslot, *hslot2; @@ -277,7 +263,7 @@ int udp_lib_get_port(struct sock *sk, unsigned short snum, bitmap_zero(bitmap, PORTS_PER_CHAIN); spin_lock_bh(&hslot->lock); udp_lib_lport_inuse(net, snum, hslot, bitmap, sk, - saddr_comp, udptable->log); + udptable->log); snum = first; /* @@ -310,12 +296,11 @@ int udp_lib_get_port(struct sock *sk, unsigned short snum, if (hslot->count < hslot2->count) goto scan_primary_hash; - exist = udp_lib_lport_inuse2(net, snum, hslot2, - sk, saddr_comp); + exist = udp_lib_lport_inuse2(net, snum, hslot2, sk); if (!exist && (hash2_nulladdr != slot2)) { hslot2 = udp_hashslot2(udptable, hash2_nulladdr); exist = udp_lib_lport_inuse2(net, snum, hslot2, - sk, saddr_comp); + sk); } if (exist) goto fail_unlock; @@ -323,8 +308,7 @@ int udp_lib_get_port(struct sock *sk, unsigned short snum, goto found; } scan_primary_hash: - if (udp_lib_lport_inuse(net, snum, hslot, NULL, sk, - saddr_comp, 0)) + if (udp_lib_lport_inuse(net, snum, hslot, NULL, sk, 0)) goto fail_unlock; } found: @@ -333,7 +317,7 @@ found: udp_sk(sk)->udp_portaddr_hash ^= snum; if (sk_unhashed(sk)) { if (sk->sk_reuseport && - udp_reuseport_add_sock(sk, hslot, saddr_comp)) { + udp_reuseport_add_sock(sk, hslot)) { inet_sk(sk)->inet_num = 0; udp_sk(sk)->udp_port_hash = 0; udp_sk(sk)->udp_portaddr_hash ^= snum; @@ -365,24 +349,6 @@ fail: } EXPORT_SYMBOL(udp_lib_get_port); -/* match_wildcard == true: 0.0.0.0 equals to any IPv4 addresses - * match_wildcard == false: addresses must be exactly the same, i.e. - * 0.0.0.0 only equals to 0.0.0.0 - */ -int ipv4_rcv_saddr_equal(const struct sock *sk1, const struct sock *sk2, - bool match_wildcard) -{ - struct inet_sock *inet1 = inet_sk(sk1), *inet2 = inet_sk(sk2); - - if (!ipv6_only_sock(sk2)) { - if (inet1->inet_rcv_saddr == inet2->inet_rcv_saddr) - return 1; - if (!inet1->inet_rcv_saddr || !inet2->inet_rcv_saddr) - return match_wildcard; - } - return 0; -} - static u32 udp4_portaddr_hash(const struct net *net, __be32 saddr, unsigned int port) { @@ -398,7 +364,7 @@ int udp_v4_get_port(struct sock *sk, unsigned short snum) /* precompute partial secondary hash */ udp_sk(sk)->udp_portaddr_hash = hash2_partial; - return udp_lib_get_port(sk, snum, ipv4_rcv_saddr_equal, hash2_nulladdr); + return udp_lib_get_port(sk, snum, hash2_nulladdr); } static int compute_score(struct sock *sk, struct net *net, diff --git a/net/ipv6/inet6_connection_sock.c b/net/ipv6/inet6_connection_sock.c index 7396e75e161b..55ee2ea2aee0 100644 --- a/net/ipv6/inet6_connection_sock.c +++ b/net/ipv6/inet6_connection_sock.c @@ -54,12 +54,12 @@ int inet6_csk_bind_conflict(const struct sock *sk, (sk2->sk_state != TCP_TIME_WAIT && !uid_eq(uid, sock_i_uid((struct sock *)sk2))))) { - if (ipv6_rcv_saddr_equal(sk, sk2, true)) + if (inet_rcv_saddr_equal(sk, sk2, true)) break; } if (!relax && reuse && sk2->sk_reuse && sk2->sk_state != TCP_LISTEN && - ipv6_rcv_saddr_equal(sk, sk2, true)) + inet_rcv_saddr_equal(sk, sk2, true)) break; } } diff --git a/net/ipv6/inet6_hashtables.c b/net/ipv6/inet6_hashtables.c index 02761c9fe43e..d0900918a19e 100644 --- a/net/ipv6/inet6_hashtables.c +++ b/net/ipv6/inet6_hashtables.c @@ -268,54 +268,10 @@ int inet6_hash(struct sock *sk) if (sk->sk_state != TCP_CLOSE) { local_bh_disable(); - err = __inet_hash(sk, NULL, ipv6_rcv_saddr_equal); + err = __inet_hash(sk, NULL); local_bh_enable(); } return err; } EXPORT_SYMBOL_GPL(inet6_hash); - -/* match_wildcard == true: IPV6_ADDR_ANY equals to any IPv6 addresses if IPv6 - * only, and any IPv4 addresses if not IPv6 only - * match_wildcard == false: addresses must be exactly the same, i.e. - * IPV6_ADDR_ANY only equals to IPV6_ADDR_ANY, - * and 0.0.0.0 equals to 0.0.0.0 only - */ -int ipv6_rcv_saddr_equal(const struct sock *sk, const struct sock *sk2, - bool match_wildcard) -{ - const struct in6_addr *sk2_rcv_saddr6 = inet6_rcv_saddr(sk2); - int sk2_ipv6only = inet_v6_ipv6only(sk2); - int addr_type = ipv6_addr_type(&sk->sk_v6_rcv_saddr); - int addr_type2 = sk2_rcv_saddr6 ? ipv6_addr_type(sk2_rcv_saddr6) : IPV6_ADDR_MAPPED; - - /* if both are mapped, treat as IPv4 */ - if (addr_type == IPV6_ADDR_MAPPED && addr_type2 == IPV6_ADDR_MAPPED) { - if (!sk2_ipv6only) { - if (sk->sk_rcv_saddr == sk2->sk_rcv_saddr) - return 1; - if (!sk->sk_rcv_saddr || !sk2->sk_rcv_saddr) - return match_wildcard; - } - return 0; - } - - if (addr_type == IPV6_ADDR_ANY && addr_type2 == IPV6_ADDR_ANY) - return 1; - - if (addr_type2 == IPV6_ADDR_ANY && match_wildcard && - !(sk2_ipv6only && addr_type == IPV6_ADDR_MAPPED)) - return 1; - - if (addr_type == IPV6_ADDR_ANY && match_wildcard && - !(ipv6_only_sock(sk) && addr_type2 == IPV6_ADDR_MAPPED)) - return 1; - - if (sk2_rcv_saddr6 && - ipv6_addr_equal(&sk->sk_v6_rcv_saddr, sk2_rcv_saddr6)) - return 1; - - return 0; -} -EXPORT_SYMBOL_GPL(ipv6_rcv_saddr_equal); diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c index 4d5c4eee4b3f..05d69324862e 100644 --- a/net/ipv6/udp.c +++ b/net/ipv6/udp.c @@ -103,7 +103,7 @@ int udp_v6_get_port(struct sock *sk, unsigned short snum) /* precompute partial secondary hash */ udp_sk(sk)->udp_portaddr_hash = hash2_partial; - return udp_lib_get_port(sk, snum, ipv6_rcv_saddr_equal, hash2_nulladdr); + return udp_lib_get_port(sk, snum, hash2_nulladdr); } static void udp_v6_rehash(struct sock *sk) |