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/ipx/af_ipx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/ipx') diff --git a/net/ipx/af_ipx.c b/net/ipx/af_ipx.c index 66c7a20011f3..6481ee4bdf72 100644 --- a/net/ipx/af_ipx.c +++ b/net/ipx/af_ipx.c @@ -1927,7 +1927,7 @@ static int ipx_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long * Socket family declarations */ -static struct net_proto_family ipx_family_ops = { +static const struct net_proto_family ipx_family_ops = { .family = PF_IPX, .create = ipx_create, .owner = THIS_MODULE, -- cgit v1.2.3 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 --- net/ipx/af_ipx.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'net/ipx') diff --git a/net/ipx/af_ipx.c b/net/ipx/af_ipx.c index 6481ee4bdf72..96d193a24415 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; -- cgit v1.2.3 From 83927ba069a65326f39991a02d6a49ba3b7cea44 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Thu, 5 Nov 2009 04:37:27 +0000 Subject: net/ipx: push down BKL into a ipx_dgram_ops Making the BKL usage explicit in ipx makes it more obvious where it is used, reduces code size and helps getting rid of the BKL in common code. I did not analyse how to kill lock_kernel from ipx entirely, this will involve either proving that it's not needed, or replacing with a proper mutex or spinlock, after finding out which data structures are protected by the lock. Cc: Arnaldo Carvalho de Melo Cc: David S. Miller Cc: Stephen Hemminger Cc: netdev@vger.kernel.org Signed-off-by: Arnd Bergmann Signed-off-by: David S. Miller --- net/ipx/af_ipx.c | 54 ++++++++++++++++++++++++++++++++++++++++++++++-------- 1 file changed, 46 insertions(+), 8 deletions(-) (limited to 'net/ipx') diff --git a/net/ipx/af_ipx.c b/net/ipx/af_ipx.c index 96d193a24415..975c5a366e55 100644 --- a/net/ipx/af_ipx.c +++ b/net/ipx/af_ipx.c @@ -1298,6 +1298,7 @@ static int ipx_setsockopt(struct socket *sock, int level, int optname, int opt; int rc = -EINVAL; + lock_kernel(); if (optlen != sizeof(int)) goto out; @@ -1312,6 +1313,7 @@ static int ipx_setsockopt(struct socket *sock, int level, int optname, ipx_sk(sk)->type = opt; rc = 0; out: + unlock_kernel(); return rc; } @@ -1323,6 +1325,7 @@ static int ipx_getsockopt(struct socket *sock, int level, int optname, int len; int rc = -ENOPROTOOPT; + lock_kernel(); if (!(level == SOL_IPX && optname == IPX_TYPE)) goto out; @@ -1343,6 +1346,7 @@ static int ipx_getsockopt(struct socket *sock, int level, int optname, rc = 0; out: + unlock_kernel(); return rc; } @@ -1391,6 +1395,7 @@ static int ipx_release(struct socket *sock) if (!sk) goto out; + lock_kernel(); if (!sock_flag(sk, SOCK_DEAD)) sk->sk_state_change(sk); @@ -1398,6 +1403,7 @@ static int ipx_release(struct socket *sock) sock->sk = NULL; sk_refcnt_debug_release(sk); ipx_destroy_socket(sk); + unlock_kernel(); out: return 0; } @@ -1425,7 +1431,8 @@ static __be16 ipx_first_free_socketnum(struct ipx_interface *intrfc) return htons(socketNum); } -static int ipx_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) +static int __ipx_bind(struct socket *sock, + struct sockaddr *uaddr, int addr_len) { struct sock *sk = sock->sk; struct ipx_sock *ipxs = ipx_sk(sk); @@ -1520,6 +1527,17 @@ out: return rc; } +static int ipx_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) +{ + int rc; + + lock_kernel(); + rc = __ipx_bind(sock, uaddr, addr_len); + unlock_kernel(); + + return rc; +} + static int ipx_connect(struct socket *sock, struct sockaddr *uaddr, int addr_len, int flags) { @@ -1532,6 +1550,7 @@ static int ipx_connect(struct socket *sock, struct sockaddr *uaddr, sk->sk_state = TCP_CLOSE; sock->state = SS_UNCONNECTED; + lock_kernel(); if (addr_len != sizeof(*addr)) goto out; addr = (struct sockaddr_ipx *)uaddr; @@ -1551,7 +1570,7 @@ static int ipx_connect(struct socket *sock, struct sockaddr *uaddr, IPX_NODE_LEN); #endif /* CONFIG_IPX_INTERN */ - rc = ipx_bind(sock, (struct sockaddr *)&uaddr, + rc = __ipx_bind(sock, (struct sockaddr *)&uaddr, sizeof(struct sockaddr_ipx)); if (rc) goto out; @@ -1578,6 +1597,7 @@ static int ipx_connect(struct socket *sock, struct sockaddr *uaddr, ipxrtr_put(rt); rc = 0; out: + unlock_kernel(); return rc; } @@ -1593,6 +1613,7 @@ static int ipx_getname(struct socket *sock, struct sockaddr *uaddr, *uaddr_len = sizeof(struct sockaddr_ipx); + lock_kernel(); if (peer) { rc = -ENOTCONN; if (sk->sk_state != TCP_ESTABLISHED) @@ -1627,6 +1648,19 @@ static int ipx_getname(struct socket *sock, struct sockaddr *uaddr, rc = 0; out: + unlock_kernel(); + return rc; +} + +static unsigned int ipx_datagram_poll(struct file *file, struct socket *sock, + poll_table *wait) +{ + int rc; + + lock_kernel(); + rc = datagram_poll(file, sock, wait); + unlock_kernel(); + return rc; } @@ -1701,6 +1735,7 @@ static int ipx_sendmsg(struct kiocb *iocb, struct socket *sock, int rc = -EINVAL; int flags = msg->msg_flags; + lock_kernel(); /* Socket gets bound below anyway */ /* if (sk->sk_zapped) return -EIO; */ /* Socket not bound */ @@ -1724,7 +1759,7 @@ static int ipx_sendmsg(struct kiocb *iocb, struct socket *sock, memcpy(uaddr.sipx_node, ipxs->intrfc->if_node, IPX_NODE_LEN); #endif - rc = ipx_bind(sock, (struct sockaddr *)&uaddr, + rc = __ipx_bind(sock, (struct sockaddr *)&uaddr, sizeof(struct sockaddr_ipx)); if (rc) goto out; @@ -1752,6 +1787,7 @@ static int ipx_sendmsg(struct kiocb *iocb, struct socket *sock, if (rc >= 0) rc = len; out: + unlock_kernel(); return rc; } @@ -1766,6 +1802,7 @@ static int ipx_recvmsg(struct kiocb *iocb, struct socket *sock, struct sk_buff *skb; int copied, rc; + lock_kernel(); /* put the autobinding in */ if (!ipxs->port) { struct sockaddr_ipx uaddr; @@ -1780,7 +1817,7 @@ static int ipx_recvmsg(struct kiocb *iocb, struct socket *sock, memcpy(uaddr.sipx_node, ipxs->intrfc->if_node, IPX_NODE_LEN); #endif /* CONFIG_IPX_INTERN */ - rc = ipx_bind(sock, (struct sockaddr *)&uaddr, + rc = __ipx_bind(sock, (struct sockaddr *)&uaddr, sizeof(struct sockaddr_ipx)); if (rc) goto out; @@ -1824,6 +1861,7 @@ static int ipx_recvmsg(struct kiocb *iocb, struct socket *sock, out_free: skb_free_datagram(sk, skb); out: + unlock_kernel(); return rc; } @@ -1835,6 +1873,7 @@ static int ipx_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) struct sock *sk = sock->sk; void __user *argp = (void __user *)arg; + lock_kernel(); switch (cmd) { case TIOCOUTQ: amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk); @@ -1897,6 +1936,7 @@ static int ipx_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) rc = -ENOIOCTLCMD; break; } + unlock_kernel(); return rc; } @@ -1934,7 +1974,7 @@ static const struct net_proto_family ipx_family_ops = { .owner = THIS_MODULE, }; -static const struct proto_ops SOCKOPS_WRAPPED(ipx_dgram_ops) = { +static const struct proto_ops ipx_dgram_ops = { .family = PF_IPX, .owner = THIS_MODULE, .release = ipx_release, @@ -1943,7 +1983,7 @@ static const struct proto_ops SOCKOPS_WRAPPED(ipx_dgram_ops) = { .socketpair = sock_no_socketpair, .accept = sock_no_accept, .getname = ipx_getname, - .poll = datagram_poll, + .poll = ipx_datagram_poll, .ioctl = ipx_ioctl, #ifdef CONFIG_COMPAT .compat_ioctl = ipx_compat_ioctl, @@ -1958,8 +1998,6 @@ static const struct proto_ops SOCKOPS_WRAPPED(ipx_dgram_ops) = { .sendpage = sock_no_sendpage, }; -SOCKOPS_WRAP(ipx_dgram, PF_IPX); - static struct packet_type ipx_8023_packet_type __read_mostly = { .type = cpu_to_be16(ETH_P_802_3), .func = ipx_rcv, -- cgit v1.2.3 From 09ad9bc752519cc167d0a573e1acf69b5c707c67 Mon Sep 17 00:00:00 2001 From: Octavian Purdila Date: Wed, 25 Nov 2009 15:14:13 -0800 Subject: net: use net_eq to compare nets Generated with the following semantic patch @@ struct net *n1; struct net *n2; @@ - n1 == n2 + net_eq(n1, n2) @@ struct net *n1; struct net *n2; @@ - n1 != n2 + !net_eq(n1, n2) applied over {include,net,drivers/net}. Signed-off-by: Octavian Purdila Signed-off-by: David S. Miller --- net/ipx/af_ipx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/ipx') diff --git a/net/ipx/af_ipx.c b/net/ipx/af_ipx.c index 975c5a366e55..f9759b54a6de 100644 --- a/net/ipx/af_ipx.c +++ b/net/ipx/af_ipx.c @@ -1362,7 +1362,7 @@ static int ipx_create(struct net *net, struct socket *sock, int protocol, int rc = -ESOCKTNOSUPPORT; struct sock *sk; - if (net != &init_net) + if (!net_eq(net, &init_net)) return -EAFNOSUPPORT; /* -- cgit v1.2.3