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authorVlad Yasevich <vladislav.yasevich@hp.com>2009-02-13 11:33:44 +0300
committerDavid S. Miller <davem@davemloft.net>2009-02-16 11:03:11 +0300
commit914e1c8b6980c516667375d3e55f0b6e674c8c58 (patch)
treed61194143a112ace85f6e6dfc22bc01d7173f62e /net/sctp
parentfaee47cdbfe8d74a1573c2f81ea6dbb08d735be6 (diff)
downloadlinux-914e1c8b6980c516667375d3e55f0b6e674c8c58.tar.xz
sctp: Inherit all socket options from parent correctly.
During peeloff/accept() sctp needs to save the parent socket state into the new socket so that any options set on the parent are inherited by the child socket. This was found when the parent/listener socket issues SO_BINDTODEVICE, but the data was misrouted after a route cache flush. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp')
-rw-r--r--net/sctp/ipv6.c33
-rw-r--r--net/sctp/protocol.c29
-rw-r--r--net/sctp/socket.c55
3 files changed, 51 insertions, 66 deletions
diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
index 786227566696..a63de3f7f185 100644
--- a/net/sctp/ipv6.c
+++ b/net/sctp/ipv6.c
@@ -627,9 +627,7 @@ static sctp_scope_t sctp_v6_scope(union sctp_addr *addr)
static struct sock *sctp_v6_create_accept_sk(struct sock *sk,
struct sctp_association *asoc)
{
- struct inet_sock *inet = inet_sk(sk);
struct sock *newsk;
- struct inet_sock *newinet;
struct ipv6_pinfo *newnp, *np = inet6_sk(sk);
struct sctp6_sock *newsctp6sk;
@@ -639,17 +637,7 @@ static struct sock *sctp_v6_create_accept_sk(struct sock *sk,
sock_init_data(NULL, newsk);
- newsk->sk_type = SOCK_STREAM;
-
- newsk->sk_prot = sk->sk_prot;
- newsk->sk_no_check = sk->sk_no_check;
- newsk->sk_reuse = sk->sk_reuse;
-
- newsk->sk_destruct = inet_sock_destruct;
- newsk->sk_family = PF_INET6;
- newsk->sk_protocol = IPPROTO_SCTP;
- newsk->sk_backlog_rcv = sk->sk_prot->backlog_rcv;
- newsk->sk_shutdown = sk->sk_shutdown;
+ sctp_copy_sock(newsk, sk, asoc);
sock_reset_flag(sk, SOCK_ZAPPED);
newsctp6sk = (struct sctp6_sock *)newsk;
@@ -657,7 +645,6 @@ static struct sock *sctp_v6_create_accept_sk(struct sock *sk,
sctp_sk(newsk)->v4mapped = sctp_sk(sk)->v4mapped;
- newinet = inet_sk(newsk);
newnp = inet6_sk(newsk);
memcpy(newnp, np, sizeof(struct ipv6_pinfo));
@@ -665,26 +652,8 @@ static struct sock *sctp_v6_create_accept_sk(struct sock *sk,
/* Initialize sk's sport, dport, rcv_saddr and daddr for getsockname()
* and getpeername().
*/
- newinet->sport = inet->sport;
- newnp->saddr = np->saddr;
- newnp->rcv_saddr = np->rcv_saddr;
- newinet->dport = htons(asoc->peer.port);
sctp_v6_to_sk_daddr(&asoc->peer.primary_addr, newsk);
- /* Init the ipv4 part of the socket since we can have sockets
- * using v6 API for ipv4.
- */
- newinet->uc_ttl = -1;
- newinet->mc_loop = 1;
- newinet->mc_ttl = 1;
- newinet->mc_index = 0;
- newinet->mc_list = NULL;
-
- if (ipv4_config.no_pmtu_disc)
- newinet->pmtudisc = IP_PMTUDISC_DONT;
- else
- newinet->pmtudisc = IP_PMTUDISC_WANT;
-
sk_refcnt_debug_inc(newsk);
if (newsk->sk_prot->init(newsk)) {
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index cc0b592698f9..c1e316ee7155 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -589,46 +589,21 @@ static int sctp_v4_is_ce(const struct sk_buff *skb)
static struct sock *sctp_v4_create_accept_sk(struct sock *sk,
struct sctp_association *asoc)
{
- struct inet_sock *inet = inet_sk(sk);
- struct inet_sock *newinet;
struct sock *newsk = sk_alloc(sock_net(sk), PF_INET, GFP_KERNEL,
sk->sk_prot);
+ struct inet_sock *newinet;
if (!newsk)
goto out;
sock_init_data(NULL, newsk);
- newsk->sk_type = SOCK_STREAM;
-
- newsk->sk_no_check = sk->sk_no_check;
- newsk->sk_reuse = sk->sk_reuse;
- newsk->sk_shutdown = sk->sk_shutdown;
-
- newsk->sk_destruct = inet_sock_destruct;
- newsk->sk_family = PF_INET;
- newsk->sk_protocol = IPPROTO_SCTP;
- newsk->sk_backlog_rcv = sk->sk_prot->backlog_rcv;
+ sctp_copy_sock(newsk, sk, asoc);
sock_reset_flag(newsk, SOCK_ZAPPED);
newinet = inet_sk(newsk);
- /* Initialize sk's sport, dport, rcv_saddr and daddr for
- * getsockname() and getpeername()
- */
- newinet->sport = inet->sport;
- newinet->saddr = inet->saddr;
- newinet->rcv_saddr = inet->rcv_saddr;
- newinet->dport = htons(asoc->peer.port);
newinet->daddr = asoc->peer.primary_addr.v4.sin_addr.s_addr;
- newinet->pmtudisc = inet->pmtudisc;
- newinet->id = asoc->next_tsn ^ jiffies;
-
- newinet->uc_ttl = -1;
- newinet->mc_loop = 1;
- newinet->mc_ttl = 1;
- newinet->mc_index = 0;
- newinet->mc_list = NULL;
sk_refcnt_debug_inc(newsk);
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index ff0a8f88de04..dea864f5de54 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -3939,7 +3939,6 @@ SCTP_STATIC int sctp_do_peeloff(struct sctp_association *asoc,
{
struct sock *sk = asoc->base.sk;
struct socket *sock;
- struct inet_sock *inetsk;
struct sctp_af *af;
int err = 0;
@@ -3954,18 +3953,18 @@ SCTP_STATIC int sctp_do_peeloff(struct sctp_association *asoc,
if (err < 0)
return err;
- /* Populate the fields of the newsk from the oldsk and migrate the
- * asoc to the newsk.
- */
- sctp_sock_migrate(sk, sock->sk, asoc, SCTP_SOCKET_UDP_HIGH_BANDWIDTH);
+ sctp_copy_sock(sock->sk, sk, asoc);
/* Make peeled-off sockets more like 1-1 accepted sockets.
* Set the daddr and initialize id to something more random
*/
af = sctp_get_af_specific(asoc->peer.primary_addr.sa.sa_family);
af->to_sk_daddr(&asoc->peer.primary_addr, sk);
- inetsk = inet_sk(sock->sk);
- inetsk->id = asoc->next_tsn ^ jiffies;
+
+ /* Populate the fields of the newsk from the oldsk and migrate the
+ * asoc to the newsk.
+ */
+ sctp_sock_migrate(sk, sock->sk, asoc, SCTP_SOCKET_UDP_HIGH_BANDWIDTH);
*sockp = sock;
@@ -6700,6 +6699,48 @@ done:
sctp_skb_set_owner_r(skb, sk);
}
+void sctp_copy_sock(struct sock *newsk, struct sock *sk,
+ struct sctp_association *asoc)
+{
+ struct inet_sock *inet = inet_sk(sk);
+ struct inet_sock *newinet = inet_sk(newsk);
+
+ newsk->sk_type = sk->sk_type;
+ newsk->sk_bound_dev_if = sk->sk_bound_dev_if;
+ newsk->sk_flags = sk->sk_flags;
+ newsk->sk_no_check = sk->sk_no_check;
+ newsk->sk_reuse = sk->sk_reuse;
+
+ newsk->sk_shutdown = sk->sk_shutdown;
+ newsk->sk_destruct = inet_sock_destruct;
+ newsk->sk_family = sk->sk_family;
+ newsk->sk_protocol = IPPROTO_SCTP;
+ newsk->sk_backlog_rcv = sk->sk_prot->backlog_rcv;
+ newsk->sk_sndbuf = sk->sk_sndbuf;
+ newsk->sk_rcvbuf = sk->sk_rcvbuf;
+ newsk->sk_lingertime = sk->sk_lingertime;
+ newsk->sk_rcvtimeo = sk->sk_rcvtimeo;
+ newsk->sk_sndtimeo = sk->sk_sndtimeo;
+
+ newinet = inet_sk(newsk);
+
+ /* Initialize sk's sport, dport, rcv_saddr and daddr for
+ * getsockname() and getpeername()
+ */
+ newinet->sport = inet->sport;
+ newinet->saddr = inet->saddr;
+ newinet->rcv_saddr = inet->rcv_saddr;
+ newinet->dport = htons(asoc->peer.port);
+ newinet->pmtudisc = inet->pmtudisc;
+ newinet->id = asoc->next_tsn ^ jiffies;
+
+ newinet->uc_ttl = inet->uc_ttl;
+ newinet->mc_loop = 1;
+ newinet->mc_ttl = 1;
+ newinet->mc_index = 0;
+ newinet->mc_list = NULL;
+}
+
/* Populate the fields of the newsk from the oldsk and migrate the assoc
* and its messages to the newsk.
*/