From ec1b4cf74c81bfd0fbe5bf62bafc86c45917e72f Mon Sep 17 00:00:00 2001 From: Stephen Hemminger Date: Mon, 5 Oct 2009 05:58:39 +0000 Subject: net: mark net_proto_ops as const All usages of structure net_proto_ops should be declared const. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller --- net/phonet/af_phonet.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/phonet/af_phonet.c') diff --git a/net/phonet/af_phonet.c b/net/phonet/af_phonet.c index f60c0c2aacb..c711d58b4bb 100644 --- a/net/phonet/af_phonet.c +++ b/net/phonet/af_phonet.c @@ -118,7 +118,7 @@ out: return err; } -static struct net_proto_family phonet_proto_family = { +static const struct net_proto_family phonet_proto_family = { .family = PF_PHONET, .create = pn_socket_create, .owner = THIS_MODULE, -- cgit v1.2.3-70-g09d2 From f14001fcd7bd03983c872810a3b11af4148bae72 Mon Sep 17 00:00:00 2001 From: Rémi Denis-Courmont Date: Wed, 14 Oct 2009 00:48:27 +0000 Subject: Phonet: deliver broadcast packets to broadcast sockets MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Rémi Denis-Courmont Signed-off-by: David S. Miller --- include/net/phonet/phonet.h | 1 + net/phonet/af_phonet.c | 6 ++++++ net/phonet/socket.c | 21 +++++++++++++++++++++ 3 files changed, 28 insertions(+) (limited to 'net/phonet/af_phonet.c') diff --git a/include/net/phonet/phonet.h b/include/net/phonet/phonet.h index d43f71b5ec0..fdb05fa0346 100644 --- a/include/net/phonet/phonet.h +++ b/include/net/phonet/phonet.h @@ -47,6 +47,7 @@ static inline struct pn_sock *pn_sk(struct sock *sk) extern const struct proto_ops phonet_dgram_ops; struct sock *pn_find_sock_by_sa(struct net *net, const struct sockaddr_pn *sa); +void pn_deliver_sock_broadcast(struct net *net, struct sk_buff *skb); void phonet_get_local_port_range(int *min, int *max); void pn_sock_hash(struct sock *sk); void pn_sock_unhash(struct sock *sk); diff --git a/net/phonet/af_phonet.c b/net/phonet/af_phonet.c index c711d58b4bb..b113fe00c15 100644 --- a/net/phonet/af_phonet.c +++ b/net/phonet/af_phonet.c @@ -369,6 +369,12 @@ static int phonet_rcv(struct sk_buff *skb, struct net_device *dev, pn_skb_get_dst_sockaddr(skb, &sa); + /* check if this is broadcasted */ + if (pn_sockaddr_get_addr(&sa) == PNADDR_BROADCAST) { + pn_deliver_sock_broadcast(net, skb); + goto out; + } + /* check if we are the destination */ if (phonet_address_lookup(net, pn_sockaddr_get_addr(&sa)) == 0) { /* Phonet packet input */ diff --git a/net/phonet/socket.c b/net/phonet/socket.c index aa5b5a972bf..8c84190f22d 100644 --- a/net/phonet/socket.c +++ b/net/phonet/socket.c @@ -94,7 +94,28 @@ struct sock *pn_find_sock_by_sa(struct net *net, const struct sockaddr_pn *spn) spin_unlock_bh(&pnsocks.lock); return rval; +} + +/* Deliver a broadcast packet (only in bottom-half) */ +void pn_deliver_sock_broadcast(struct net *net, struct sk_buff *skb) +{ + struct hlist_node *node; + struct sock *sknode; + + spin_lock(&pnsocks.lock); + sk_for_each(sknode, node, &pnsocks.hlist) { + struct sk_buff *clone; + + if (!net_eq(sock_net(sknode), net)) + continue; + if (!sock_flag(sknode, SOCK_BROADCAST)) + continue; + clone = skb_clone(skb, GFP_ATOMIC); + if (clone) + sk_receive_skb(sknode, clone, 0); + } + spin_unlock(&pnsocks.lock); } void pn_sock_hash(struct sock *sk) -- cgit v1.2.3-70-g09d2 From aa6c45f32f7db292f8f6a76d7b39c19007d6a456 Mon Sep 17 00:00:00 2001 From: Rémi Denis-Courmont Date: Wed, 14 Oct 2009 00:48:30 +0000 Subject: Phonet: route outgoing packets MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Rémi Denis-Courmont Signed-off-by: David S. Miller --- net/phonet/af_phonet.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) (limited to 'net/phonet/af_phonet.c') diff --git a/net/phonet/af_phonet.c b/net/phonet/af_phonet.c index b113fe00c15..cc2eef169a8 100644 --- a/net/phonet/af_phonet.c +++ b/net/phonet/af_phonet.c @@ -190,9 +190,8 @@ static int pn_send(struct sk_buff *skb, struct net_device *dev, skb->priority = 0; skb->dev = dev; - if (pn_addr(src) == pn_addr(dst)) { + if (skb->pkt_type == PACKET_LOOPBACK) { skb_reset_mac_header(skb); - skb->pkt_type = PACKET_LOOPBACK; skb_orphan(skb); if (irq) netif_rx(skb); @@ -222,6 +221,9 @@ static int pn_raw_send(const void *data, int len, struct net_device *dev, if (skb == NULL) return -ENOMEM; + if (phonet_address_lookup(dev_net(dev), pn_addr(dst)) == 0) + skb->pkt_type = PACKET_LOOPBACK; + skb_reserve(skb, MAX_PHONET_HEADER); __skb_put(skb, len); skb_copy_to_linear_data(skb, data, len); @@ -235,6 +237,7 @@ static int pn_raw_send(const void *data, int len, struct net_device *dev, int pn_skb_send(struct sock *sk, struct sk_buff *skb, const struct sockaddr_pn *target) { + struct net *net = sock_net(sk); struct net_device *dev; struct pn_sock *pn = pn_sk(sk); int err; @@ -243,9 +246,13 @@ int pn_skb_send(struct sock *sk, struct sk_buff *skb, err = -EHOSTUNREACH; if (sk->sk_bound_dev_if) - dev = dev_get_by_index(sock_net(sk), sk->sk_bound_dev_if); - else - dev = phonet_device_get(sock_net(sk)); + dev = dev_get_by_index(net, sk->sk_bound_dev_if); + else if (phonet_address_lookup(net, daddr) == 0) { + dev = phonet_device_get(net); + skb->pkt_type = PACKET_LOOPBACK; + } else + dev = phonet_route_output(net, daddr); + if (!dev || !(dev->flags & IFF_UP)) goto drop; -- cgit v1.2.3-70-g09d2 From 86a0a1e52d0918125ffc21475537a032f9a71d7c Mon Sep 17 00:00:00 2001 From: Rémi Denis-Courmont Date: Wed, 14 Oct 2009 00:48:31 +0000 Subject: Phonet: forward incoming packets MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Rémi Denis-Courmont Signed-off-by: David S. Miller --- net/phonet/af_phonet.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) (limited to 'net/phonet/af_phonet.c') diff --git a/net/phonet/af_phonet.c b/net/phonet/af_phonet.c index cc2eef169a8..66737aa995e 100644 --- a/net/phonet/af_phonet.c +++ b/net/phonet/af_phonet.c @@ -394,6 +394,38 @@ static int phonet_rcv(struct sk_buff *skb, struct net_device *dev, send_obj_unreachable(skb); send_reset_indications(skb); } + } else if (unlikely(skb->pkt_type == PACKET_LOOPBACK)) + goto out; /* Race between address deletion and loopback */ + else { + /* Phonet packet routing */ + struct net_device *out_dev; + + out_dev = phonet_route_output(net, pn_sockaddr_get_addr(&sa)); + if (!out_dev) { + LIMIT_NETDEBUG(KERN_WARNING"No Phonet route to %02X\n", + pn_sockaddr_get_addr(&sa)); + goto out; + } + + __skb_push(skb, sizeof(struct phonethdr)); + skb->dev = out_dev; + if (out_dev == dev) { + LIMIT_NETDEBUG(KERN_ERR"Phonet loop to %02X on %s\n", + pn_sockaddr_get_addr(&sa), dev->name); + goto out_dev; + } + /* Some drivers (e.g. TUN) do not allocate HW header space */ + if (skb_cow_head(skb, out_dev->hard_header_len)) + goto out_dev; + + if (dev_hard_header(skb, out_dev, ETH_P_PHONET, NULL, NULL, + skb->len) < 0) + goto out_dev; + dev_queue_xmit(skb); + dev_put(out_dev); + return NET_RX_SUCCESS; +out_dev: + dev_put(out_dev); } out: -- cgit v1.2.3-70-g09d2 From 3f378b684453f2a028eda463ce383370545d9cc9 Mon Sep 17 00:00:00 2001 From: Eric Paris Date: Thu, 5 Nov 2009 22:18:14 -0800 Subject: net: pass kern to net_proto_family create function The generic __sock_create function has a kern argument which allows the security system to make decisions based on if a socket is being created by the kernel or by userspace. This patch passes that flag to the net_proto_family specific create function, so it can do the same thing. Signed-off-by: Eric Paris Acked-by: Arnaldo Carvalho de Melo Signed-off-by: David S. Miller --- drivers/isdn/mISDN/socket.c | 2 +- drivers/net/pppox.c | 3 ++- include/linux/net.h | 3 ++- net/appletalk/ddp.c | 3 ++- net/atm/pvc.c | 3 ++- net/atm/svc.c | 7 ++++--- net/ax25/af_ax25.c | 3 ++- net/bluetooth/af_bluetooth.c | 5 +++-- net/bluetooth/bnep/sock.c | 3 ++- net/bluetooth/cmtp/sock.c | 3 ++- net/bluetooth/hci_sock.c | 3 ++- net/bluetooth/hidp/sock.c | 3 ++- net/bluetooth/l2cap.c | 3 ++- net/bluetooth/rfcomm/sock.c | 3 ++- net/bluetooth/sco.c | 3 ++- net/can/af_can.c | 3 ++- net/decnet/af_decnet.c | 3 ++- net/econet/af_econet.c | 3 ++- net/ieee802154/af_ieee802154.c | 2 +- net/ipv4/af_inet.c | 3 ++- net/ipv6/af_inet6.c | 3 ++- net/ipx/af_ipx.c | 3 ++- net/irda/af_irda.c | 7 ++++--- net/iucv/af_iucv.c | 3 ++- net/key/af_key.c | 3 ++- net/llc/af_llc.c | 5 ++++- net/netlink/af_netlink.c | 3 ++- net/netrom/af_netrom.c | 3 ++- net/packet/af_packet.c | 3 ++- net/phonet/af_phonet.c | 3 ++- net/rds/af_rds.c | 3 ++- net/rose/af_rose.c | 3 ++- net/rxrpc/af_rxrpc.c | 3 ++- net/socket.c | 2 +- net/tipc/socket.c | 6 ++++-- net/unix/af_unix.c | 3 ++- net/x25/af_x25.c | 3 ++- 37 files changed, 80 insertions(+), 43 deletions(-) (limited to 'net/phonet/af_phonet.c') diff --git a/drivers/isdn/mISDN/socket.c b/drivers/isdn/mISDN/socket.c index 28182ed8dea..fcfe17a19a6 100644 --- a/drivers/isdn/mISDN/socket.c +++ b/drivers/isdn/mISDN/socket.c @@ -779,7 +779,7 @@ base_sock_create(struct net *net, struct socket *sock, int protocol) } static int -mISDN_sock_create(struct net *net, struct socket *sock, int proto) +mISDN_sock_create(struct net *net, struct socket *sock, int proto, int kern) { int err = -EPROTONOSUPPORT; diff --git a/drivers/net/pppox.c b/drivers/net/pppox.c index c14ee24c05a..ac806b27c65 100644 --- a/drivers/net/pppox.c +++ b/drivers/net/pppox.c @@ -104,7 +104,8 @@ int pppox_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) EXPORT_SYMBOL(pppox_ioctl); -static int pppox_create(struct net *net, struct socket *sock, int protocol) +static int pppox_create(struct net *net, struct socket *sock, int protocol, + int kern) { int rc = -EPROTOTYPE; diff --git a/include/linux/net.h b/include/linux/net.h index 4da9d571b05..70ee3c310f1 100644 --- a/include/linux/net.h +++ b/include/linux/net.h @@ -204,7 +204,8 @@ struct proto_ops { struct net_proto_family { int family; - int (*create)(struct net *net, struct socket *sock, int protocol); + int (*create)(struct net *net, struct socket *sock, + int protocol, int kern); struct module *owner; }; diff --git a/net/appletalk/ddp.c b/net/appletalk/ddp.c index abe38014b7f..4b0ce2e2b46 100644 --- a/net/appletalk/ddp.c +++ b/net/appletalk/ddp.c @@ -1021,7 +1021,8 @@ static struct proto ddp_proto = { * Create a socket. Initialise the socket, blank the addresses * set the state. */ -static int atalk_create(struct net *net, struct socket *sock, int protocol) +static int atalk_create(struct net *net, struct socket *sock, int protocol, + int kern) { struct sock *sk; int rc = -ESOCKTNOSUPPORT; diff --git a/net/atm/pvc.c b/net/atm/pvc.c index a6e1fdbae87..8d74e62b0d7 100644 --- a/net/atm/pvc.c +++ b/net/atm/pvc.c @@ -127,7 +127,8 @@ static const struct proto_ops pvc_proto_ops = { }; -static int pvc_create(struct net *net, struct socket *sock,int protocol) +static int pvc_create(struct net *net, struct socket *sock, int protocol, + int kern) { if (net != &init_net) return -EAFNOSUPPORT; diff --git a/net/atm/svc.c b/net/atm/svc.c index 81935423331..c7395070ee7 100644 --- a/net/atm/svc.c +++ b/net/atm/svc.c @@ -25,7 +25,7 @@ #include "signaling.h" #include "addr.h" -static int svc_create(struct net *net, struct socket *sock,int protocol); +static int svc_create(struct net *net, struct socket *sock, int protocol, int kern); /* * Note: since all this is still nicely synchronized with the signaling demon, @@ -330,7 +330,7 @@ static int svc_accept(struct socket *sock,struct socket *newsock,int flags) lock_sock(sk); - error = svc_create(sock_net(sk), newsock,0); + error = svc_create(sock_net(sk), newsock, 0, 0); if (error) goto out; @@ -650,7 +650,8 @@ static const struct proto_ops svc_proto_ops = { }; -static int svc_create(struct net *net, struct socket *sock,int protocol) +static int svc_create(struct net *net, struct socket *sock, int protocol, + int kern) { int error; diff --git a/net/ax25/af_ax25.c b/net/ax25/af_ax25.c index f1e998b2796..d6ddfa4c447 100644 --- a/net/ax25/af_ax25.c +++ b/net/ax25/af_ax25.c @@ -799,7 +799,8 @@ static struct proto ax25_proto = { .obj_size = sizeof(struct sock), }; -static int ax25_create(struct net *net, struct socket *sock, int protocol) +static int ax25_create(struct net *net, struct socket *sock, int protocol, + int kern) { struct sock *sk; ax25_cb *ax25; diff --git a/net/bluetooth/af_bluetooth.c b/net/bluetooth/af_bluetooth.c index 399e59c9c6c..087cc51f592 100644 --- a/net/bluetooth/af_bluetooth.c +++ b/net/bluetooth/af_bluetooth.c @@ -126,7 +126,8 @@ int bt_sock_unregister(int proto) } EXPORT_SYMBOL(bt_sock_unregister); -static int bt_sock_create(struct net *net, struct socket *sock, int proto) +static int bt_sock_create(struct net *net, struct socket *sock, int proto, + int kern) { int err; @@ -144,7 +145,7 @@ static int bt_sock_create(struct net *net, struct socket *sock, int proto) read_lock(&bt_proto_lock); if (bt_proto[proto] && try_module_get(bt_proto[proto]->owner)) { - err = bt_proto[proto]->create(net, sock, proto); + err = bt_proto[proto]->create(net, sock, proto, kern); bt_sock_reclassify_lock(sock, proto); module_put(bt_proto[proto]->owner); } diff --git a/net/bluetooth/bnep/sock.c b/net/bluetooth/bnep/sock.c index 0a2c5460bb4..2ff6ac7b2ed 100644 --- a/net/bluetooth/bnep/sock.c +++ b/net/bluetooth/bnep/sock.c @@ -195,7 +195,8 @@ static struct proto bnep_proto = { .obj_size = sizeof(struct bt_sock) }; -static int bnep_sock_create(struct net *net, struct socket *sock, int protocol) +static int bnep_sock_create(struct net *net, struct socket *sock, int protocol, + int kern) { struct sock *sk; diff --git a/net/bluetooth/cmtp/sock.c b/net/bluetooth/cmtp/sock.c index de7c8040bc5..978cc3a718a 100644 --- a/net/bluetooth/cmtp/sock.c +++ b/net/bluetooth/cmtp/sock.c @@ -190,7 +190,8 @@ static struct proto cmtp_proto = { .obj_size = sizeof(struct bt_sock) }; -static int cmtp_sock_create(struct net *net, struct socket *sock, int protocol) +static int cmtp_sock_create(struct net *net, struct socket *sock, int protocol, + int kern) { struct sock *sk; diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c index e7395f23198..1ca5c7ca9bd 100644 --- a/net/bluetooth/hci_sock.c +++ b/net/bluetooth/hci_sock.c @@ -621,7 +621,8 @@ static struct proto hci_sk_proto = { .obj_size = sizeof(struct hci_pinfo) }; -static int hci_sock_create(struct net *net, struct socket *sock, int protocol) +static int hci_sock_create(struct net *net, struct socket *sock, int protocol, + int kern) { struct sock *sk; diff --git a/net/bluetooth/hidp/sock.c b/net/bluetooth/hidp/sock.c index 4beb6a7a295..9cfef68b9fe 100644 --- a/net/bluetooth/hidp/sock.c +++ b/net/bluetooth/hidp/sock.c @@ -241,7 +241,8 @@ static struct proto hidp_proto = { .obj_size = sizeof(struct bt_sock) }; -static int hidp_sock_create(struct net *net, struct socket *sock, int protocol) +static int hidp_sock_create(struct net *net, struct socket *sock, int protocol, + int kern) { struct sock *sk; diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c index d65101d92ee..365ae161d70 100644 --- a/net/bluetooth/l2cap.c +++ b/net/bluetooth/l2cap.c @@ -819,7 +819,8 @@ static struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock, int p return sk; } -static int l2cap_sock_create(struct net *net, struct socket *sock, int protocol) +static int l2cap_sock_create(struct net *net, struct socket *sock, int protocol, + int kern) { struct sock *sk; diff --git a/net/bluetooth/rfcomm/sock.c b/net/bluetooth/rfcomm/sock.c index d3bfc1b0afb..4b5968dda67 100644 --- a/net/bluetooth/rfcomm/sock.c +++ b/net/bluetooth/rfcomm/sock.c @@ -323,7 +323,8 @@ static struct sock *rfcomm_sock_alloc(struct net *net, struct socket *sock, int return sk; } -static int rfcomm_sock_create(struct net *net, struct socket *sock, int protocol) +static int rfcomm_sock_create(struct net *net, struct socket *sock, + int protocol, int kern) { struct sock *sk; diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c index 694a65541b7..dd8f6ec57dc 100644 --- a/net/bluetooth/sco.c +++ b/net/bluetooth/sco.c @@ -430,7 +430,8 @@ static struct sock *sco_sock_alloc(struct net *net, struct socket *sock, int pro return sk; } -static int sco_sock_create(struct net *net, struct socket *sock, int protocol) +static int sco_sock_create(struct net *net, struct socket *sock, int protocol, + int kern) { struct sock *sk; diff --git a/net/can/af_can.c b/net/can/af_can.c index 9c0426dc318..833bd838edc 100644 --- a/net/can/af_can.c +++ b/net/can/af_can.c @@ -114,7 +114,8 @@ static void can_sock_destruct(struct sock *sk) skb_queue_purge(&sk->sk_receive_queue); } -static int can_create(struct net *net, struct socket *sock, int protocol) +static int can_create(struct net *net, struct socket *sock, int protocol, + int kern) { struct sock *sk; struct can_proto *cp; diff --git a/net/decnet/af_decnet.c b/net/decnet/af_decnet.c index 2e355841ca9..9ade3a6de95 100644 --- a/net/decnet/af_decnet.c +++ b/net/decnet/af_decnet.c @@ -675,7 +675,8 @@ char *dn_addr2asc(__u16 addr, char *buf) -static int dn_create(struct net *net, struct socket *sock, int protocol) +static int dn_create(struct net *net, struct socket *sock, int protocol, + int kern) { struct sock *sk; diff --git a/net/econet/af_econet.c b/net/econet/af_econet.c index 5e9426a11c3..596679803de 100644 --- a/net/econet/af_econet.c +++ b/net/econet/af_econet.c @@ -605,7 +605,8 @@ static struct proto econet_proto = { * Create an Econet socket */ -static int econet_create(struct net *net, struct socket *sock, int protocol) +static int econet_create(struct net *net, struct socket *sock, int protocol, + int kern) { struct sock *sk; struct econet_sock *eo; diff --git a/net/ieee802154/af_ieee802154.c b/net/ieee802154/af_ieee802154.c index 309348fba72..de6e34d2a7f 100644 --- a/net/ieee802154/af_ieee802154.c +++ b/net/ieee802154/af_ieee802154.c @@ -234,7 +234,7 @@ static const struct proto_ops ieee802154_dgram_ops = { * set the state. */ static int ieee802154_create(struct net *net, struct socket *sock, - int protocol) + int protocol, int kern) { struct sock *sk; int rc; diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c index 180ec4c9491..5c7e42c02af 100644 --- a/net/ipv4/af_inet.c +++ b/net/ipv4/af_inet.c @@ -262,7 +262,8 @@ static inline int inet_netns_ok(struct net *net, int protocol) * Create an inet socket. */ -static int inet_create(struct net *net, struct socket *sock, int protocol) +static int inet_create(struct net *net, struct socket *sock, int protocol, + int kern) { struct sock *sk; struct inet_protosw *answer; diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c index 1b388935659..45ed5e05ab3 100644 --- a/net/ipv6/af_inet6.c +++ b/net/ipv6/af_inet6.c @@ -95,7 +95,8 @@ static __inline__ struct ipv6_pinfo *inet6_sk_generic(struct sock *sk) return (struct ipv6_pinfo *)(((u8 *)sk) + offset); } -static int inet6_create(struct net *net, struct socket *sock, int protocol) +static int inet6_create(struct net *net, struct socket *sock, int protocol, + int kern) { struct inet_sock *inet; struct ipv6_pinfo *np; diff --git a/net/ipx/af_ipx.c b/net/ipx/af_ipx.c index 6481ee4bdf7..96d193a2441 100644 --- a/net/ipx/af_ipx.c +++ b/net/ipx/af_ipx.c @@ -1352,7 +1352,8 @@ static struct proto ipx_proto = { .obj_size = sizeof(struct ipx_sock), }; -static int ipx_create(struct net *net, struct socket *sock, int protocol) +static int ipx_create(struct net *net, struct socket *sock, int protocol, + int kern) { int rc = -ESOCKTNOSUPPORT; struct sock *sk; diff --git a/net/irda/af_irda.c b/net/irda/af_irda.c index 9429e4002bc..e73a0016c0a 100644 --- a/net/irda/af_irda.c +++ b/net/irda/af_irda.c @@ -61,7 +61,7 @@ #include -static int irda_create(struct net *net, struct socket *sock, int protocol); +static int irda_create(struct net *net, struct socket *sock, int protocol, int kern); static const struct proto_ops irda_stream_ops; static const struct proto_ops irda_seqpacket_ops; @@ -839,7 +839,7 @@ static int irda_accept(struct socket *sock, struct socket *newsock, int flags) IRDA_DEBUG(2, "%s()\n", __func__); - err = irda_create(sock_net(sk), newsock, sk->sk_protocol); + err = irda_create(sock_net(sk), newsock, sk->sk_protocol, 0); if (err) return err; @@ -1062,7 +1062,8 @@ static struct proto irda_proto = { * Create IrDA socket * */ -static int irda_create(struct net *net, struct socket *sock, int protocol) +static int irda_create(struct net *net, struct socket *sock, int protocol, + int kern) { struct sock *sk; struct irda_sock *self; diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c index 3aebabb158a..1e428863574 100644 --- a/net/iucv/af_iucv.c +++ b/net/iucv/af_iucv.c @@ -481,7 +481,8 @@ static struct sock *iucv_sock_alloc(struct socket *sock, int proto, gfp_t prio) } /* Create an IUCV socket */ -static int iucv_sock_create(struct net *net, struct socket *sock, int protocol) +static int iucv_sock_create(struct net *net, struct socket *sock, int protocol, + int kern) { struct sock *sk; diff --git a/net/key/af_key.c b/net/key/af_key.c index 472f6594184..86b2c22d091 100644 --- a/net/key/af_key.c +++ b/net/key/af_key.c @@ -177,7 +177,8 @@ static struct proto key_proto = { .obj_size = sizeof(struct pfkey_sock), }; -static int pfkey_create(struct net *net, struct socket *sock, int protocol) +static int pfkey_create(struct net *net, struct socket *sock, int protocol, + int kern) { struct netns_pfkey *net_pfkey = net_generic(net, pfkey_net_id); struct sock *sk; diff --git a/net/llc/af_llc.c b/net/llc/af_llc.c index 4866b4fb0c2..5266c286b26 100644 --- a/net/llc/af_llc.c +++ b/net/llc/af_llc.c @@ -140,14 +140,17 @@ static struct proto llc_proto = { /** * llc_ui_create - alloc and init a new llc_ui socket + * @net: network namespace (must be default network) * @sock: Socket to initialize and attach allocated sk to. * @protocol: Unused. + * @kern: on behalf of kernel or userspace * * Allocate and initialize a new llc_ui socket, validate the user wants a * socket type we have available. * Returns 0 upon success, negative upon failure. */ -static int llc_ui_create(struct net *net, struct socket *sock, int protocol) +static int llc_ui_create(struct net *net, struct socket *sock, int protocol, + int kern) { struct sock *sk; int rc = -ESOCKTNOSUPPORT; diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c index 0cd2d882931..aea805c98da 100644 --- a/net/netlink/af_netlink.c +++ b/net/netlink/af_netlink.c @@ -428,7 +428,8 @@ static int __netlink_create(struct net *net, struct socket *sock, return 0; } -static int netlink_create(struct net *net, struct socket *sock, int protocol) +static int netlink_create(struct net *net, struct socket *sock, int protocol, + int kern) { struct module *module = NULL; struct mutex *cb_mutex; diff --git a/net/netrom/af_netrom.c b/net/netrom/af_netrom.c index 281fa597cae..4bdd5697f63 100644 --- a/net/netrom/af_netrom.c +++ b/net/netrom/af_netrom.c @@ -425,7 +425,8 @@ static struct proto nr_proto = { .obj_size = sizeof(struct nr_sock), }; -static int nr_create(struct net *net, struct socket *sock, int protocol) +static int nr_create(struct net *net, struct socket *sock, int protocol, + int kern) { struct sock *sk; struct nr_sock *nr; diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c index 91d246d3478..3304caa6534 100644 --- a/net/packet/af_packet.c +++ b/net/packet/af_packet.c @@ -1344,7 +1344,8 @@ static struct proto packet_proto = { * Create a packet of type SOCK_PACKET. */ -static int packet_create(struct net *net, struct socket *sock, int protocol) +static int packet_create(struct net *net, struct socket *sock, int protocol, + int kern) { struct sock *sk; struct packet_sock *po; diff --git a/net/phonet/af_phonet.c b/net/phonet/af_phonet.c index 66737aa995e..3bd1be6b26f 100644 --- a/net/phonet/af_phonet.c +++ b/net/phonet/af_phonet.c @@ -60,7 +60,8 @@ static inline void phonet_proto_put(struct phonet_protocol *pp) /* protocol family functions */ -static int pn_socket_create(struct net *net, struct socket *sock, int protocol) +static int pn_socket_create(struct net *net, struct socket *sock, int protocol, + int kern) { struct sock *sk; struct pn_sock *pn; diff --git a/net/rds/af_rds.c b/net/rds/af_rds.c index 2b978dc6e75..e25d8d5ce8d 100644 --- a/net/rds/af_rds.c +++ b/net/rds/af_rds.c @@ -410,7 +410,8 @@ static int __rds_create(struct socket *sock, struct sock *sk, int protocol) return 0; } -static int rds_create(struct net *net, struct socket *sock, int protocol) +static int rds_create(struct net *net, struct socket *sock, int protocol, + int kern) { struct sock *sk; diff --git a/net/rose/af_rose.c b/net/rose/af_rose.c index c17734c2ce8..4de4287fec3 100644 --- a/net/rose/af_rose.c +++ b/net/rose/af_rose.c @@ -512,7 +512,8 @@ static struct proto rose_proto = { .obj_size = sizeof(struct rose_sock), }; -static int rose_create(struct net *net, struct socket *sock, int protocol) +static int rose_create(struct net *net, struct socket *sock, int protocol, + int kern) { struct sock *sk; struct rose_sock *rose; diff --git a/net/rxrpc/af_rxrpc.c b/net/rxrpc/af_rxrpc.c index 6817c9781ef..f978d02a248 100644 --- a/net/rxrpc/af_rxrpc.c +++ b/net/rxrpc/af_rxrpc.c @@ -608,7 +608,8 @@ static unsigned int rxrpc_poll(struct file *file, struct socket *sock, /* * create an RxRPC socket */ -static int rxrpc_create(struct net *net, struct socket *sock, int protocol) +static int rxrpc_create(struct net *net, struct socket *sock, int protocol, + int kern) { struct rxrpc_sock *rx; struct sock *sk; diff --git a/net/socket.c b/net/socket.c index 9dff31c9b79..4f3e0f0c156 100644 --- a/net/socket.c +++ b/net/socket.c @@ -1252,7 +1252,7 @@ static int __sock_create(struct net *net, int family, int type, int protocol, /* Now protected by module ref count */ rcu_read_unlock(); - err = pf->create(net, sock, protocol); + err = pf->create(net, sock, protocol, kern); if (err < 0) goto out_module_put; diff --git a/net/tipc/socket.c b/net/tipc/socket.c index e6d9abf7440..d00c2119faf 100644 --- a/net/tipc/socket.c +++ b/net/tipc/socket.c @@ -177,6 +177,7 @@ static void reject_rx_queue(struct sock *sk) * @net: network namespace (must be default network) * @sock: pre-allocated socket structure * @protocol: protocol indicator (must be 0) + * @kern: caused by kernel or by userspace? * * This routine creates additional data structures used by the TIPC socket, * initializes them, and links them together. @@ -184,7 +185,8 @@ static void reject_rx_queue(struct sock *sk) * Returns 0 on success, errno otherwise */ -static int tipc_create(struct net *net, struct socket *sock, int protocol) +static int tipc_create(struct net *net, struct socket *sock, int protocol, + int kern) { const struct proto_ops *ops; socket_state state; @@ -1528,7 +1530,7 @@ static int accept(struct socket *sock, struct socket *new_sock, int flags) buf = skb_peek(&sk->sk_receive_queue); - res = tipc_create(sock_net(sock->sk), new_sock, 0); + res = tipc_create(sock_net(sock->sk), new_sock, 0, 0); if (!res) { struct sock *new_sk = new_sock->sk; struct tipc_sock *new_tsock = tipc_sk(new_sk); diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c index 3291902f0b8..178d3af2a60 100644 --- a/net/unix/af_unix.c +++ b/net/unix/af_unix.c @@ -621,7 +621,8 @@ out: return sk; } -static int unix_create(struct net *net, struct socket *sock, int protocol) +static int unix_create(struct net *net, struct socket *sock, int protocol, + int kern) { if (protocol && protocol != PF_UNIX) return -EPROTONOSUPPORT; diff --git a/net/x25/af_x25.c b/net/x25/af_x25.c index e19d811788a..38e235f61e2 100644 --- a/net/x25/af_x25.c +++ b/net/x25/af_x25.c @@ -501,7 +501,8 @@ out: return sk; } -static int x25_create(struct net *net, struct socket *sock, int protocol) +static int x25_create(struct net *net, struct socket *sock, int protocol, + int kern) { struct sock *sk; struct x25_sock *x25; -- cgit v1.2.3-70-g09d2 From 6b0d07ba152893b40f1014a9db8da5aa564aa00e Mon Sep 17 00:00:00 2001 From: Rémi Denis-Courmont Date: Mon, 9 Nov 2009 02:17:01 +0000 Subject: Phonet: put sockets in a hash table MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Rémi Denis-Courmont Signed-off-by: David S. Miller --- include/net/phonet/phonet.h | 1 + net/phonet/af_phonet.c | 1 + net/phonet/socket.c | 79 +++++++++++++++++++++++++++++++-------------- 3 files changed, 56 insertions(+), 25 deletions(-) (limited to 'net/phonet/af_phonet.c') diff --git a/include/net/phonet/phonet.h b/include/net/phonet/phonet.h index fdb05fa0346..7b114079a51 100644 --- a/include/net/phonet/phonet.h +++ b/include/net/phonet/phonet.h @@ -46,6 +46,7 @@ static inline struct pn_sock *pn_sk(struct sock *sk) extern const struct proto_ops phonet_dgram_ops; +void pn_sock_init(void); struct sock *pn_find_sock_by_sa(struct net *net, const struct sockaddr_pn *sa); void pn_deliver_sock_broadcast(struct net *net, struct sk_buff *skb); void phonet_get_local_port_range(int *min, int *max); diff --git a/net/phonet/af_phonet.c b/net/phonet/af_phonet.c index 3bd1be6b26f..8d3a55b4a30 100644 --- a/net/phonet/af_phonet.c +++ b/net/phonet/af_phonet.c @@ -481,6 +481,7 @@ static int __init phonet_init(void) if (err) return err; + pn_sock_init(); err = sock_register(&phonet_proto_family); if (err) { printk(KERN_ALERT diff --git a/net/phonet/socket.c b/net/phonet/socket.c index 0412beb59a0..4112b6e1c48 100644 --- a/net/phonet/socket.c +++ b/net/phonet/socket.c @@ -45,13 +45,28 @@ static int pn_socket_release(struct socket *sock) return 0; } +#define PN_HASHSIZE 16 +#define PN_HASHMASK (PN_HASHSIZE-1) + + static struct { - struct hlist_head hlist; + struct hlist_head hlist[PN_HASHSIZE]; spinlock_t lock; -} pnsocks = { - .hlist = HLIST_HEAD_INIT, - .lock = __SPIN_LOCK_UNLOCKED(pnsocks.lock), -}; +} pnsocks; + +void __init pn_sock_init(void) +{ + unsigned i; + + for (i = 0; i < PN_HASHSIZE; i++) + INIT_HLIST_HEAD(pnsocks.hlist + i); + spin_lock_init(&pnsocks.lock); +} + +static struct hlist_head *pn_hash_list(u16 obj) +{ + return pnsocks.hlist + (obj & PN_HASHMASK); +} /* * Find address based on socket address, match only certain fields. @@ -64,10 +79,11 @@ struct sock *pn_find_sock_by_sa(struct net *net, const struct sockaddr_pn *spn) struct sock *rval = NULL; u16 obj = pn_sockaddr_get_object(spn); u8 res = spn->spn_resource; + struct hlist_head *hlist = pn_hash_list(obj); spin_lock_bh(&pnsocks.lock); - sk_for_each(sknode, node, &pnsocks.hlist) { + sk_for_each(sknode, node, hlist) { struct pn_sock *pn = pn_sk(sknode); BUG_ON(!pn->sobject); /* unbound socket */ @@ -99,31 +115,39 @@ struct sock *pn_find_sock_by_sa(struct net *net, const struct sockaddr_pn *spn) /* Deliver a broadcast packet (only in bottom-half) */ void pn_deliver_sock_broadcast(struct net *net, struct sk_buff *skb) { - struct hlist_node *node; - struct sock *sknode; + struct hlist_head *hlist = pnsocks.hlist; + unsigned h; spin_lock(&pnsocks.lock); - sk_for_each(sknode, node, &pnsocks.hlist) { - struct sk_buff *clone; + for (h = 0; h < PN_HASHSIZE; h++) { + struct hlist_node *node; + struct sock *sknode; - if (!net_eq(sock_net(sknode), net)) - continue; - if (!sock_flag(sknode, SOCK_BROADCAST)) - continue; + sk_for_each(sknode, node, hlist) { + struct sk_buff *clone; - clone = skb_clone(skb, GFP_ATOMIC); - if (clone) { - sock_hold(sknode); - sk_receive_skb(sknode, clone, 0); + if (!net_eq(sock_net(sknode), net)) + continue; + if (!sock_flag(sknode, SOCK_BROADCAST)) + continue; + + clone = skb_clone(skb, GFP_ATOMIC); + if (clone) { + sock_hold(sknode); + sk_receive_skb(sknode, clone, 0); + } } + hlist++; } spin_unlock(&pnsocks.lock); } void pn_sock_hash(struct sock *sk) { + struct hlist_head *hlist = pn_hash_list(pn_sk(sk)->sobject); + spin_lock_bh(&pnsocks.lock); - sk_add_node(sk, &pnsocks.hlist); + sk_add_node(sk, hlist); spin_unlock_bh(&pnsocks.lock); } EXPORT_SYMBOL(pn_sock_hash); @@ -439,15 +463,20 @@ EXPORT_SYMBOL(pn_sock_get_port); static struct sock *pn_sock_get_idx(struct seq_file *seq, loff_t pos) { struct net *net = seq_file_net(seq); + struct hlist_head *hlist = pnsocks.hlist; struct hlist_node *node; struct sock *sknode; + unsigned h; - sk_for_each(sknode, node, &pnsocks.hlist) { - if (!net_eq(net, sock_net(sknode))) - continue; - if (!pos) - return sknode; - pos--; + for (h = 0; h < PN_HASHSIZE; h++) { + sk_for_each(sknode, node, hlist) { + if (!net_eq(net, sock_net(sknode))) + continue; + if (!pos) + return sknode; + pos--; + } + hlist++; } return NULL; } -- cgit v1.2.3-70-g09d2 From 7ed0132f232b11ae58b6d868e8d7ada9dfa066d7 Mon Sep 17 00:00:00 2001 From: Rémi Denis-Courmont Date: Fri, 13 Nov 2009 05:01:18 +0000 Subject: Phonet: put protocols array under RCU MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Rémi Denis-Courmont Signed-off-by: David S. Miller --- net/phonet/af_phonet.c | 20 +++++++++++--------- 1 file changed, 11 insertions(+), 9 deletions(-) (limited to 'net/phonet/af_phonet.c') diff --git a/net/phonet/af_phonet.c b/net/phonet/af_phonet.c index 8d3a55b4a30..ed65da251b6 100644 --- a/net/phonet/af_phonet.c +++ b/net/phonet/af_phonet.c @@ -35,7 +35,6 @@ /* Transport protocol registration */ static struct phonet_protocol *proto_tab[PHONET_NPROTO] __read_mostly; -static DEFINE_SPINLOCK(proto_tab_lock); static struct phonet_protocol *phonet_proto_get(int protocol) { @@ -44,11 +43,11 @@ static struct phonet_protocol *phonet_proto_get(int protocol) if (protocol >= PHONET_NPROTO) return NULL; - spin_lock(&proto_tab_lock); + rcu_read_lock(); pp = proto_tab[protocol]; if (pp && !try_module_get(pp->prot->owner)) pp = NULL; - spin_unlock(&proto_tab_lock); + rcu_read_unlock(); return pp; } @@ -439,6 +438,8 @@ static struct packet_type phonet_packet_type __read_mostly = { .func = phonet_rcv, }; +static DEFINE_MUTEX(proto_tab_lock); + int __init_or_module phonet_proto_register(int protocol, struct phonet_protocol *pp) { @@ -451,12 +452,12 @@ int __init_or_module phonet_proto_register(int protocol, if (err) return err; - spin_lock(&proto_tab_lock); + mutex_lock(&proto_tab_lock); if (proto_tab[protocol]) err = -EBUSY; else - proto_tab[protocol] = pp; - spin_unlock(&proto_tab_lock); + rcu_assign_pointer(proto_tab[protocol], pp); + mutex_unlock(&proto_tab_lock); return err; } @@ -464,10 +465,11 @@ EXPORT_SYMBOL(phonet_proto_register); void phonet_proto_unregister(int protocol, struct phonet_protocol *pp) { - spin_lock(&proto_tab_lock); + mutex_lock(&proto_tab_lock); BUG_ON(proto_tab[protocol] != pp); - proto_tab[protocol] = NULL; - spin_unlock(&proto_tab_lock); + rcu_assign_pointer(proto_tab[protocol], NULL); + mutex_unlock(&proto_tab_lock); + synchronize_rcu(); proto_unregister(pp->prot); } EXPORT_SYMBOL(phonet_proto_unregister); -- cgit v1.2.3-70-g09d2 From b2a5decddbe295d09c29d4a8078cdc47a55346df Mon Sep 17 00:00:00 2001 From: Rémi Denis-Courmont Date: Mon, 16 Nov 2009 22:17:24 +0000 Subject: Phonet: missing rcu_dereference() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Reported-by: Paul E. McKenney Signed-off-by: Rémi Denis-Courmont Signed-off-by: David S. Miller --- net/phonet/af_phonet.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/phonet/af_phonet.c') diff --git a/net/phonet/af_phonet.c b/net/phonet/af_phonet.c index ed65da251b6..526d0273991 100644 --- a/net/phonet/af_phonet.c +++ b/net/phonet/af_phonet.c @@ -44,7 +44,7 @@ static struct phonet_protocol *phonet_proto_get(int protocol) return NULL; rcu_read_lock(); - pp = proto_tab[protocol]; + pp = rcu_dereference(proto_tab[protocol]); if (pp && !try_module_get(pp->prot->owner)) pp = NULL; rcu_read_unlock(); -- cgit v1.2.3-70-g09d2