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Diffstat (limited to 'net')
-rw-r--r--net/ipv4/af_inet.c7
-rw-r--r--net/ipv4/fib_frontend.c8
-rw-r--r--net/ipv4/igmp.c5
-rw-r--r--net/ipv4/netfilter/ip_conntrack_proto_tcp.c29
-rw-r--r--net/ipv4/netfilter/ipt_recent.c1
-rw-r--r--net/ipv6/af_inet6.c47
-rw-r--r--net/ipv6/mcast.c5
-rw-r--r--net/netfilter/nf_conntrack_proto_tcp.c29
-rw-r--r--net/sctp/socket.c10
-rw-r--r--net/sctp/transport.c3
-rw-r--r--net/sunrpc/rpc_pipe.c2
11 files changed, 100 insertions, 46 deletions
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index eaa150c33b0..d368cf24900 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -228,13 +228,14 @@ static int inet_create(struct socket *sock, int protocol)
unsigned char answer_flags;
char answer_no_check;
int try_loading_module = 0;
- int err = -ESOCKTNOSUPPORT;
+ int err;
sock->state = SS_UNCONNECTED;
/* Look for the requested type/protocol pair. */
answer = NULL;
lookup_protocol:
+ err = -ESOCKTNOSUPPORT;
rcu_read_lock();
list_for_each_rcu(p, &inetsw[sock->type]) {
answer = list_entry(p, struct inet_protosw, list);
@@ -252,6 +253,7 @@ lookup_protocol:
if (IPPROTO_IP == answer->protocol)
break;
}
+ err = -EPROTONOSUPPORT;
answer = NULL;
}
@@ -280,9 +282,6 @@ lookup_protocol:
err = -EPERM;
if (answer->capability > 0 && !capable(answer->capability))
goto out_rcu_unlock;
- err = -EPROTONOSUPPORT;
- if (!protocol)
- goto out_rcu_unlock;
sock->ops = answer->ops;
answer_prot = answer->prot;
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index 882f88f6d13..19b1b984d68 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -544,12 +544,16 @@ static void nl_fib_input(struct sock *sk, int len)
struct sk_buff *skb = NULL;
struct nlmsghdr *nlh = NULL;
struct fib_result_nl *frn;
- int err;
u32 pid;
struct fib_table *tb;
- skb = skb_recv_datagram(sk, 0, 0, &err);
+ skb = skb_dequeue(&sk->sk_receive_queue);
nlh = (struct nlmsghdr *)skb->data;
+ if (skb->len < NLMSG_SPACE(0) || skb->len < nlh->nlmsg_len ||
+ nlh->nlmsg_len < NLMSG_LENGTH(sizeof(*frn))) {
+ kfree_skb(skb);
+ return;
+ }
frn = (struct fib_result_nl *) NLMSG_DATA(nlh);
tb = fib_get_table(frn->tb_id_in);
diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index c04607b4921..4a195c724f0 100644
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -897,7 +897,10 @@ int igmp_rcv(struct sk_buff *skb)
/* Is it our report looped back? */
if (((struct rtable*)skb->dst)->fl.iif == 0)
break;
- igmp_heard_report(in_dev, ih->group);
+ /* don't rely on MC router hearing unicast reports */
+ if (skb->pkt_type == PACKET_MULTICAST ||
+ skb->pkt_type == PACKET_BROADCAST)
+ igmp_heard_report(in_dev, ih->group);
break;
case IGMP_PIM:
#ifdef CONFIG_IP_PIMSM_V1
diff --git a/net/ipv4/netfilter/ip_conntrack_proto_tcp.c b/net/ipv4/netfilter/ip_conntrack_proto_tcp.c
index 62598167677..aeb7353d477 100644
--- a/net/ipv4/netfilter/ip_conntrack_proto_tcp.c
+++ b/net/ipv4/netfilter/ip_conntrack_proto_tcp.c
@@ -272,9 +272,9 @@ static const enum tcp_conntrack tcp_conntracks[2][6][TCP_CONNTRACK_MAX] = {
* sCL -> sCL
*/
/* sNO, sSS, sSR, sES, sFW, sCW, sLA, sTW, sCL, sLI */
-/*ack*/ { sIV, sIV, sSR, sES, sCW, sCW, sTW, sTW, sCL, sIV },
+/*ack*/ { sIV, sIG, sSR, sES, sCW, sCW, sTW, sTW, sCL, sIV },
/*
- * sSS -> sIV Might be a half-open connection.
+ * sSS -> sIG Might be a half-open connection.
* sSR -> sSR Might answer late resent SYN.
* sES -> sES :-)
* sFW -> sCW Normal close request answered by ACK.
@@ -917,8 +917,12 @@ static int tcp_packet(struct ip_conntrack *conntrack,
switch (new_state) {
case TCP_CONNTRACK_IGNORE:
- /* Either SYN in ORIGINAL
- * or SYN/ACK in REPLY. */
+ /* Ignored packets:
+ *
+ * a) SYN in ORIGINAL
+ * b) SYN/ACK in REPLY
+ * c) ACK in reply direction after initial SYN in original.
+ */
if (index == TCP_SYNACK_SET
&& conntrack->proto.tcp.last_index == TCP_SYN_SET
&& conntrack->proto.tcp.last_dir != dir
@@ -985,13 +989,20 @@ static int tcp_packet(struct ip_conntrack *conntrack,
}
case TCP_CONNTRACK_CLOSE:
if (index == TCP_RST_SET
- && test_bit(IPS_SEEN_REPLY_BIT, &conntrack->status)
- && conntrack->proto.tcp.last_index == TCP_SYN_SET
+ && ((test_bit(IPS_SEEN_REPLY_BIT, &conntrack->status)
+ && conntrack->proto.tcp.last_index == TCP_SYN_SET)
+ || (!test_bit(IPS_ASSURED_BIT, &conntrack->status)
+ && conntrack->proto.tcp.last_index == TCP_ACK_SET))
&& ntohl(th->ack_seq) == conntrack->proto.tcp.last_end) {
- /* RST sent to invalid SYN we had let trough
- * SYN was in window then, tear down connection.
+ /* RST sent to invalid SYN or ACK we had let trough
+ * at a) and c) above:
+ *
+ * a) SYN was in window then
+ * c) we hold a half-open connection.
+ *
+ * Delete our connection entry.
* We skip window checking, because packet might ACK
- * segments we ignored in the SYN. */
+ * segments we ignored. */
goto in_window;
}
/* Just fall trough */
diff --git a/net/ipv4/netfilter/ipt_recent.c b/net/ipv4/netfilter/ipt_recent.c
index 2d44b07688a..261cbb4d4c4 100644
--- a/net/ipv4/netfilter/ipt_recent.c
+++ b/net/ipv4/netfilter/ipt_recent.c
@@ -532,6 +532,7 @@ match(const struct sk_buff *skb,
}
if(info->seconds && info->hit_count) {
for(pkt_count = 0, hits_found = 0; pkt_count < ip_pkt_list_tot; pkt_count++) {
+ if(r_list[location].last_pkts[pkt_count] == 0) break;
if(time_before_eq(now,r_list[location].last_pkts[pkt_count]+info->seconds*HZ)) hits_found++;
}
if(hits_found >= info->hit_count) ans = !info->invert; else ans = info->invert;
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index c63b8ce0e1b..d9546380fa0 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -92,10 +92,13 @@ static int inet6_create(struct socket *sock, int protocol)
struct proto *answer_prot;
unsigned char answer_flags;
char answer_no_check;
- int rc;
+ int try_loading_module = 0;
+ int err;
/* Look for the requested type/protocol pair. */
answer = NULL;
+lookup_protocol:
+ err = -ESOCKTNOSUPPORT;
rcu_read_lock();
list_for_each_rcu(p, &inetsw6[sock->type]) {
answer = list_entry(p, struct inet_protosw, list);
@@ -113,21 +116,37 @@ static int inet6_create(struct socket *sock, int protocol)
if (IPPROTO_IP == answer->protocol)
break;
}
+ err = -EPROTONOSUPPORT;
answer = NULL;
}
- rc = -ESOCKTNOSUPPORT;
- if (!answer)
- goto out_rcu_unlock;
- rc = -EPERM;
+ if (!answer) {
+ if (try_loading_module < 2) {
+ rcu_read_unlock();
+ /*
+ * Be more specific, e.g. net-pf-10-proto-132-type-1
+ * (net-pf-PF_INET6-proto-IPPROTO_SCTP-type-SOCK_STREAM)
+ */
+ if (++try_loading_module == 1)
+ request_module("net-pf-%d-proto-%d-type-%d",
+ PF_INET6, protocol, sock->type);
+ /*
+ * Fall back to generic, e.g. net-pf-10-proto-132
+ * (net-pf-PF_INET6-proto-IPPROTO_SCTP)
+ */
+ else
+ request_module("net-pf-%d-proto-%d",
+ PF_INET6, protocol);
+ goto lookup_protocol;
+ } else
+ goto out_rcu_unlock;
+ }
+
+ err = -EPERM;
if (answer->capability > 0 && !capable(answer->capability))
goto out_rcu_unlock;
- rc = -EPROTONOSUPPORT;
- if (!protocol)
- goto out_rcu_unlock;
sock->ops = answer->ops;
-
answer_prot = answer->prot;
answer_no_check = answer->no_check;
answer_flags = answer->flags;
@@ -135,14 +154,14 @@ static int inet6_create(struct socket *sock, int protocol)
BUG_TRAP(answer_prot->slab != NULL);
- rc = -ENOBUFS;
+ err = -ENOBUFS;
sk = sk_alloc(PF_INET6, GFP_KERNEL, answer_prot, 1);
if (sk == NULL)
goto out;
sock_init_data(sock, sk);
- rc = 0;
+ err = 0;
sk->sk_no_check = answer_no_check;
if (INET_PROTOSW_REUSE & answer_flags)
sk->sk_reuse = 1;
@@ -202,14 +221,14 @@ static int inet6_create(struct socket *sock, int protocol)
sk->sk_prot->hash(sk);
}
if (sk->sk_prot->init) {
- rc = sk->sk_prot->init(sk);
- if (rc) {
+ err = sk->sk_prot->init(sk);
+ if (err) {
sk_common_release(sk);
goto out;
}
}
out:
- return rc;
+ return err;
out_rcu_unlock:
rcu_read_unlock();
goto out;
diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
index f15e04ad026..fd939da090c 100644
--- a/net/ipv6/mcast.c
+++ b/net/ipv6/mcast.c
@@ -1231,6 +1231,11 @@ int igmp6_event_report(struct sk_buff *skb)
if (skb->pkt_type == PACKET_LOOPBACK)
return 0;
+ /* send our report if the MC router may not have heard this report */
+ if (skb->pkt_type != PACKET_MULTICAST &&
+ skb->pkt_type != PACKET_BROADCAST)
+ return 0;
+
if (!pskb_may_pull(skb, sizeof(struct in6_addr)))
return -EINVAL;
diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c
index 5a6fcf349bd..6035633d822 100644
--- a/net/netfilter/nf_conntrack_proto_tcp.c
+++ b/net/netfilter/nf_conntrack_proto_tcp.c
@@ -280,9 +280,9 @@ static enum tcp_conntrack tcp_conntracks[2][6][TCP_CONNTRACK_MAX] = {
* sCL -> sCL
*/
/* sNO, sSS, sSR, sES, sFW, sCW, sLA, sTW, sCL, sLI */
-/*ack*/ { sIV, sIV, sSR, sES, sCW, sCW, sTW, sTW, sCL, sIV },
+/*ack*/ { sIV, sIG, sSR, sES, sCW, sCW, sTW, sTW, sCL, sIV },
/*
- * sSS -> sIV Might be a half-open connection.
+ * sSS -> sIG Might be a half-open connection.
* sSR -> sSR Might answer late resent SYN.
* sES -> sES :-)
* sFW -> sCW Normal close request answered by ACK.
@@ -912,8 +912,12 @@ static int tcp_packet(struct nf_conn *conntrack,
switch (new_state) {
case TCP_CONNTRACK_IGNORE:
- /* Either SYN in ORIGINAL
- * or SYN/ACK in REPLY. */
+ /* Ignored packets:
+ *
+ * a) SYN in ORIGINAL
+ * b) SYN/ACK in REPLY
+ * c) ACK in reply direction after initial SYN in original.
+ */
if (index == TCP_SYNACK_SET
&& conntrack->proto.tcp.last_index == TCP_SYN_SET
&& conntrack->proto.tcp.last_dir != dir
@@ -979,13 +983,20 @@ static int tcp_packet(struct nf_conn *conntrack,
}
case TCP_CONNTRACK_CLOSE:
if (index == TCP_RST_SET
- && test_bit(IPS_SEEN_REPLY_BIT, &conntrack->status)
- && conntrack->proto.tcp.last_index == TCP_SYN_SET
+ && ((test_bit(IPS_SEEN_REPLY_BIT, &conntrack->status)
+ && conntrack->proto.tcp.last_index == TCP_SYN_SET)
+ || (!test_bit(IPS_ASSURED_BIT, &conntrack->status)
+ && conntrack->proto.tcp.last_index == TCP_ACK_SET))
&& ntohl(th->ack_seq) == conntrack->proto.tcp.last_end) {
- /* RST sent to invalid SYN we had let trough
- * SYN was in window then, tear down connection.
+ /* RST sent to invalid SYN or ACK we had let trough
+ * at a) and c) above:
+ *
+ * a) SYN was in window then
+ * c) we hold a half-open connection.
+ *
+ * Delete our connection entry.
* We skip window checking, because packet might ACK
- * segments we ignored in the SYN. */
+ * segments we ignored. */
goto in_window;
}
/* Just fall trough */
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index abab81f3818..d890dfa8818 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -4743,11 +4743,6 @@ static struct sk_buff *sctp_skb_recv_datagram(struct sock *sk, int flags,
struct sk_buff *skb;
long timeo;
- /* Caller is allowed not to check sk->sk_err before calling. */
- error = sock_error(sk);
- if (error)
- goto no_packet;
-
timeo = sock_rcvtimeo(sk, noblock);
SCTP_DEBUG_PRINTK("Timeout: timeo: %ld, MAX: %ld.\n",
@@ -4774,6 +4769,11 @@ static struct sk_buff *sctp_skb_recv_datagram(struct sock *sk, int flags,
if (skb)
return skb;
+ /* Caller is allowed not to check sk->sk_err before calling. */
+ error = sock_error(sk);
+ if (error)
+ goto no_packet;
+
if (sk->sk_shutdown & RCV_SHUTDOWN)
break;
diff --git a/net/sctp/transport.c b/net/sctp/transport.c
index 6bc27200e6c..268ddaf2dc0 100644
--- a/net/sctp/transport.c
+++ b/net/sctp/transport.c
@@ -261,7 +261,8 @@ void sctp_transport_route(struct sctp_transport *transport,
* association's active path for getsockname().
*/
if (asoc && (transport == asoc->peer.active_path))
- af->to_sk_saddr(&transport->saddr, asoc->base.sk);
+ opt->pf->af->to_sk_saddr(&transport->saddr,
+ asoc->base.sk);
} else
transport->pmtu = SCTP_DEFAULT_MAXSEGMENT;
}
diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c
index e3b242daf53..c76ea221798 100644
--- a/net/sunrpc/rpc_pipe.c
+++ b/net/sunrpc/rpc_pipe.c
@@ -59,7 +59,6 @@ __rpc_purge_upcall(struct inode *inode, int err)
struct rpc_inode *rpci = RPC_I(inode);
__rpc_purge_list(rpci, &rpci->pipe, err);
- __rpc_purge_list(rpci, &rpci->in_upcall, err);
rpci->pipelen = 0;
wake_up(&rpci->waitq);
}
@@ -119,6 +118,7 @@ rpc_close_pipes(struct inode *inode)
down(&inode->i_sem);
if (rpci->ops != NULL) {
rpci->nreaders = 0;
+ __rpc_purge_list(rpci, &rpci->in_upcall, -EPIPE);
__rpc_purge_upcall(inode, -EPIPE);
rpci->nwriters = 0;
if (rpci->ops->release_pipe)
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-29 13:25:58 +0000