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-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.
*/
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.