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Diffstat (limited to 'net/ipv6/udp.c')
-rw-r--r--net/ipv6/udp.c97
1 files changed, 58 insertions, 39 deletions
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index f4058150262..f3893e897f7 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -53,22 +53,42 @@
#include <trace/events/skb.h>
#include "udp_impl.h"
+static unsigned int udp6_ehashfn(struct net *net,
+ const struct in6_addr *laddr,
+ const u16 lport,
+ const struct in6_addr *faddr,
+ const __be16 fport)
+{
+ static u32 udp6_ehash_secret __read_mostly;
+ static u32 udp_ipv6_hash_secret __read_mostly;
+
+ u32 lhash, fhash;
+
+ net_get_random_once(&udp6_ehash_secret,
+ sizeof(udp6_ehash_secret));
+ net_get_random_once(&udp_ipv6_hash_secret,
+ sizeof(udp_ipv6_hash_secret));
+
+ lhash = (__force u32)laddr->s6_addr32[3];
+ fhash = __ipv6_addr_jhash(faddr, udp_ipv6_hash_secret);
+
+ return __inet6_ehashfn(lhash, lport, fhash, fport,
+ udp_ipv6_hash_secret + net_hash_mix(net));
+}
+
int ipv6_rcv_saddr_equal(const struct sock *sk, const struct sock *sk2)
{
- const struct in6_addr *sk_rcv_saddr6 = &inet6_sk(sk)->rcv_saddr;
const struct in6_addr *sk2_rcv_saddr6 = inet6_rcv_saddr(sk2);
- __be32 sk1_rcv_saddr = sk_rcv_saddr(sk);
- __be32 sk2_rcv_saddr = sk_rcv_saddr(sk2);
int sk_ipv6only = ipv6_only_sock(sk);
int sk2_ipv6only = inet_v6_ipv6only(sk2);
- int addr_type = ipv6_addr_type(sk_rcv_saddr6);
+ 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)
return (!sk2_ipv6only &&
- (!sk1_rcv_saddr || !sk2_rcv_saddr ||
- sk1_rcv_saddr == sk2_rcv_saddr));
+ (!sk->sk_rcv_saddr || !sk2->sk_rcv_saddr ||
+ sk->sk_rcv_saddr == sk2->sk_rcv_saddr));
if (addr_type2 == IPV6_ADDR_ANY &&
!(sk2_ipv6only && addr_type == IPV6_ADDR_MAPPED))
@@ -79,7 +99,7 @@ int ipv6_rcv_saddr_equal(const struct sock *sk, const struct sock *sk2)
return 1;
if (sk2_rcv_saddr6 &&
- ipv6_addr_equal(sk_rcv_saddr6, sk2_rcv_saddr6))
+ ipv6_addr_equal(&sk->sk_v6_rcv_saddr, sk2_rcv_saddr6))
return 1;
return 0;
@@ -107,7 +127,7 @@ int udp_v6_get_port(struct sock *sk, unsigned short snum)
unsigned int hash2_nulladdr =
udp6_portaddr_hash(sock_net(sk), &in6addr_any, snum);
unsigned int hash2_partial =
- udp6_portaddr_hash(sock_net(sk), &inet6_sk(sk)->rcv_saddr, 0);
+ udp6_portaddr_hash(sock_net(sk), &sk->sk_v6_rcv_saddr, 0);
/* precompute partial secondary hash */
udp_sk(sk)->udp_portaddr_hash = hash2_partial;
@@ -117,7 +137,7 @@ int udp_v6_get_port(struct sock *sk, unsigned short snum)
static void udp_v6_rehash(struct sock *sk)
{
u16 new_hash = udp6_portaddr_hash(sock_net(sk),
- &inet6_sk(sk)->rcv_saddr,
+ &sk->sk_v6_rcv_saddr,
inet_sk(sk)->inet_num);
udp_lib_rehash(sk, new_hash);
@@ -133,7 +153,6 @@ static inline int compute_score(struct sock *sk, struct net *net,
if (net_eq(sock_net(sk), net) && udp_sk(sk)->udp_port_hash == hnum &&
sk->sk_family == PF_INET6) {
- struct ipv6_pinfo *np = inet6_sk(sk);
struct inet_sock *inet = inet_sk(sk);
score = 0;
@@ -142,13 +161,13 @@ static inline int compute_score(struct sock *sk, struct net *net,
return -1;
score++;
}
- if (!ipv6_addr_any(&np->rcv_saddr)) {
- if (!ipv6_addr_equal(&np->rcv_saddr, daddr))
+ if (!ipv6_addr_any(&sk->sk_v6_rcv_saddr)) {
+ if (!ipv6_addr_equal(&sk->sk_v6_rcv_saddr, daddr))
return -1;
score++;
}
- if (!ipv6_addr_any(&np->daddr)) {
- if (!ipv6_addr_equal(&np->daddr, saddr))
+ if (!ipv6_addr_any(&sk->sk_v6_daddr)) {
+ if (!ipv6_addr_equal(&sk->sk_v6_daddr, saddr))
return -1;
score++;
}
@@ -171,10 +190,9 @@ static inline int compute_score2(struct sock *sk, struct net *net,
if (net_eq(sock_net(sk), net) && udp_sk(sk)->udp_port_hash == hnum &&
sk->sk_family == PF_INET6) {
- struct ipv6_pinfo *np = inet6_sk(sk);
struct inet_sock *inet = inet_sk(sk);
- if (!ipv6_addr_equal(&np->rcv_saddr, daddr))
+ if (!ipv6_addr_equal(&sk->sk_v6_rcv_saddr, daddr))
return -1;
score = 0;
if (inet->inet_dport) {
@@ -182,8 +200,8 @@ static inline int compute_score2(struct sock *sk, struct net *net,
return -1;
score++;
}
- if (!ipv6_addr_any(&np->daddr)) {
- if (!ipv6_addr_equal(&np->daddr, saddr))
+ if (!ipv6_addr_any(&sk->sk_v6_daddr)) {
+ if (!ipv6_addr_equal(&sk->sk_v6_daddr, saddr))
return -1;
score++;
}
@@ -219,8 +237,8 @@ begin:
badness = score;
reuseport = sk->sk_reuseport;
if (reuseport) {
- hash = inet6_ehashfn(net, daddr, hnum,
- saddr, sport);
+ hash = udp6_ehashfn(net, daddr, hnum,
+ saddr, sport);
matches = 1;
} else if (score == SCORE2_MAX)
goto exact_match;
@@ -300,8 +318,8 @@ begin:
badness = score;
reuseport = sk->sk_reuseport;
if (reuseport) {
- hash = inet6_ehashfn(net, daddr, hnum,
- saddr, sport);
+ hash = udp6_ehashfn(net, daddr, hnum,
+ saddr, sport);
matches = 1;
}
} else if (score == badness && reuseport) {
@@ -525,8 +543,10 @@ void __udp6_lib_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
if (type == ICMPV6_PKT_TOOBIG)
ip6_sk_update_pmtu(skb, sk, info);
- if (type == NDISC_REDIRECT)
+ if (type == NDISC_REDIRECT) {
ip6_sk_redirect(skb, sk);
+ goto out;
+ }
np = inet6_sk(sk);
@@ -549,8 +569,10 @@ static int __udpv6_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
{
int rc;
- if (!ipv6_addr_any(&inet6_sk(sk)->daddr))
+ if (!ipv6_addr_any(&sk->sk_v6_daddr)) {
sock_rps_save_rxhash(sk, skb);
+ sk_mark_napi_id(sk, skb);
+ }
rc = sock_queue_rcv_skb(sk, skb);
if (rc < 0) {
@@ -688,20 +710,19 @@ static struct sock *udp_v6_mcast_next(struct net *net, struct sock *sk,
if (udp_sk(s)->udp_port_hash == num &&
s->sk_family == PF_INET6) {
- struct ipv6_pinfo *np = inet6_sk(s);
if (inet->inet_dport) {
if (inet->inet_dport != rmt_port)
continue;
}
- if (!ipv6_addr_any(&np->daddr) &&
- !ipv6_addr_equal(&np->daddr, rmt_addr))
+ if (!ipv6_addr_any(&sk->sk_v6_daddr) &&
+ !ipv6_addr_equal(&sk->sk_v6_daddr, rmt_addr))
continue;
if (s->sk_bound_dev_if && s->sk_bound_dev_if != dif)
continue;
- if (!ipv6_addr_any(&np->rcv_saddr)) {
- if (!ipv6_addr_equal(&np->rcv_saddr, loc_addr))
+ if (!ipv6_addr_any(&sk->sk_v6_rcv_saddr)) {
+ if (!ipv6_addr_equal(&sk->sk_v6_rcv_saddr, loc_addr))
continue;
}
if (!inet6_mc_check(s, loc_addr, rmt_addr))
@@ -844,7 +865,6 @@ int __udp6_lib_rcv(struct sk_buff *skb, struct udp_table *udptable,
if (sk != NULL) {
int ret;
- sk_mark_napi_id(sk, skb);
ret = udpv6_queue_rcv_skb(sk, skb);
sock_put(sk);
@@ -1062,7 +1082,7 @@ int udpv6_sendmsg(struct kiocb *iocb, struct sock *sk,
} else if (!up->pending) {
if (sk->sk_state != TCP_ESTABLISHED)
return -EDESTADDRREQ;
- daddr = &np->daddr;
+ daddr = &sk->sk_v6_daddr;
} else
daddr = NULL;
@@ -1132,8 +1152,8 @@ do_udp_sendmsg:
* sk->sk_dst_cache.
*/
if (sk->sk_state == TCP_ESTABLISHED &&
- ipv6_addr_equal(daddr, &np->daddr))
- daddr = &np->daddr;
+ ipv6_addr_equal(daddr, &sk->sk_v6_daddr))
+ daddr = &sk->sk_v6_daddr;
if (addr_len >= sizeof(struct sockaddr_in6) &&
sin6->sin6_scope_id &&
@@ -1144,7 +1164,7 @@ do_udp_sendmsg:
return -EDESTADDRREQ;
fl6.fl6_dport = inet->inet_dport;
- daddr = &np->daddr;
+ daddr = &sk->sk_v6_daddr;
fl6.flowlabel = np->flow_label;
connected = 1;
}
@@ -1223,9 +1243,6 @@ do_udp_sendmsg:
if (tclass < 0)
tclass = np->tclass;
- if (dontfrag < 0)
- dontfrag = np->dontfrag;
-
if (msg->msg_flags&MSG_CONFIRM)
goto do_confirm;
back_from_confirm:
@@ -1244,6 +1261,8 @@ back_from_confirm:
up->pending = AF_INET6;
do_append_data:
+ if (dontfrag < 0)
+ dontfrag = np->dontfrag;
up->len += ulen;
getfrag = is_udplite ? udplite_getfrag : ip_generic_getfrag;
err = ip6_append_data(sk, getfrag, msg->msg_iov, ulen,
@@ -1260,8 +1279,8 @@ do_append_data:
if (dst) {
if (connected) {
ip6_dst_store(sk, dst,
- ipv6_addr_equal(&fl6.daddr, &np->daddr) ?
- &np->daddr : NULL,
+ ipv6_addr_equal(&fl6.daddr, &sk->sk_v6_daddr) ?
+ &sk->sk_v6_daddr : NULL,
#ifdef CONFIG_IPV6_SUBTREES
ipv6_addr_equal(&fl6.saddr, &np->saddr) ?
&np->saddr :
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-23 01:31:38 +0000