diff options
Diffstat (limited to 'net/packet/af_packet.c')
| -rw-r--r-- | net/packet/af_packet.c | 56 |
1 files changed, 9 insertions, 47 deletions
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c index 02e401cd683f..f8b83014ccca 100644 --- a/net/packet/af_packet.c +++ b/net/packet/af_packet.c @@ -83,22 +83,6 @@ #include <net/inet_common.h> #endif -#define CONFIG_SOCK_PACKET 1 - -/* - Proposed replacement for SIOC{ADD,DEL}MULTI and - IFF_PROMISC, IFF_ALLMULTI flags. - - It is more expensive, but I believe, - it is really correct solution: reentereble, safe and fault tolerant. - - IFF_PROMISC/IFF_ALLMULTI/SIOC{ADD/DEL}MULTI are faked by keeping - reference count and global flag, so that real status is - (gflag|(count != 0)), so that we can use obsolete faulty interface - not harming clever users. - */ -#define CONFIG_PACKET_MULTICAST 1 - /* Assumptions: - if device has no dev->hard_header routine, it adds and removes ll header @@ -159,7 +143,6 @@ static atomic_t packet_socks_nr; /* Private packet socket structures. */ -#ifdef CONFIG_PACKET_MULTICAST struct packet_mclist { struct packet_mclist *next; @@ -179,7 +162,7 @@ struct packet_mreq_max unsigned short mr_alen; unsigned char mr_address[MAX_ADDR_LEN]; }; -#endif + #ifdef CONFIG_PACKET_MMAP static int packet_set_ring(struct sock *sk, struct tpacket_req *req, int closing); #endif @@ -205,9 +188,7 @@ struct packet_sock { origdev:1; int ifindex; /* bound device */ __be16 num; -#ifdef CONFIG_PACKET_MULTICAST struct packet_mclist *mclist; -#endif #ifdef CONFIG_PACKET_MMAP atomic_t mapped; unsigned int pg_vec_order; @@ -263,7 +244,6 @@ static void packet_sock_destruct(struct sock *sk) static const struct proto_ops packet_ops; -#ifdef CONFIG_SOCK_PACKET static const struct proto_ops packet_ops_spkt; static int packet_rcv_spkt(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt, struct net_device *orig_dev) @@ -435,7 +415,6 @@ out_unlock: dev_put(dev); return err; } -#endif static inline unsigned int run_filter(struct sk_buff *skb, struct sock *sk, unsigned int res) @@ -851,9 +830,7 @@ static int packet_release(struct socket *sock) __sock_put(sk); } -#ifdef CONFIG_PACKET_MULTICAST packet_flush_mclist(sk); -#endif #ifdef CONFIG_PACKET_MMAP if (po->pg_vec) { @@ -936,8 +913,6 @@ out_unlock: * Bind a packet socket to a device */ -#ifdef CONFIG_SOCK_PACKET - static int packet_bind_spkt(struct socket *sock, struct sockaddr *uaddr, int addr_len) { struct sock *sk=sock->sk; @@ -960,7 +935,6 @@ static int packet_bind_spkt(struct socket *sock, struct sockaddr *uaddr, int add } return err; } -#endif static int packet_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) { @@ -1012,11 +986,8 @@ static int packet_create(struct socket *sock, int protocol) if (!capable(CAP_NET_RAW)) return -EPERM; - if (sock->type != SOCK_DGRAM && sock->type != SOCK_RAW -#ifdef CONFIG_SOCK_PACKET - && sock->type != SOCK_PACKET -#endif - ) + if (sock->type != SOCK_DGRAM && sock->type != SOCK_RAW && + sock->type != SOCK_PACKET) return -ESOCKTNOSUPPORT; sock->state = SS_UNCONNECTED; @@ -1027,10 +998,9 @@ static int packet_create(struct socket *sock, int protocol) goto out; sock->ops = &packet_ops; -#ifdef CONFIG_SOCK_PACKET if (sock->type == SOCK_PACKET) sock->ops = &packet_ops_spkt; -#endif + sock_init_data(sock, sk); po = pkt_sk(sk); @@ -1046,10 +1016,10 @@ static int packet_create(struct socket *sock, int protocol) spin_lock_init(&po->bind_lock); po->prot_hook.func = packet_rcv; -#ifdef CONFIG_SOCK_PACKET + if (sock->type == SOCK_PACKET) po->prot_hook.func = packet_rcv_spkt; -#endif + po->prot_hook.af_packet_priv = sk; if (proto) { @@ -1169,7 +1139,6 @@ out: return err; } -#ifdef CONFIG_SOCK_PACKET static int packet_getname_spkt(struct socket *sock, struct sockaddr *uaddr, int *uaddr_len, int peer) { @@ -1190,7 +1159,6 @@ static int packet_getname_spkt(struct socket *sock, struct sockaddr *uaddr, return 0; } -#endif static int packet_getname(struct socket *sock, struct sockaddr *uaddr, int *uaddr_len, int peer) @@ -1221,7 +1189,6 @@ static int packet_getname(struct socket *sock, struct sockaddr *uaddr, return 0; } -#ifdef CONFIG_PACKET_MULTICAST static void packet_dev_mc(struct net_device *dev, struct packet_mclist *i, int what) { switch (i->type) { @@ -1349,7 +1316,6 @@ static void packet_flush_mclist(struct sock *sk) } rtnl_unlock(); } -#endif static int packet_setsockopt(struct socket *sock, int level, int optname, char __user *optval, int optlen) @@ -1362,7 +1328,6 @@ packet_setsockopt(struct socket *sock, int level, int optname, char __user *optv return -ENOPROTOOPT; switch(optname) { -#ifdef CONFIG_PACKET_MULTICAST case PACKET_ADD_MEMBERSHIP: case PACKET_DROP_MEMBERSHIP: { @@ -1383,7 +1348,7 @@ packet_setsockopt(struct socket *sock, int level, int optname, char __user *optv ret = packet_mc_drop(sk, &mreq); return ret; } -#endif + #ifdef CONFIG_PACKET_MMAP case PACKET_RX_RING: { @@ -1506,11 +1471,10 @@ static int packet_notifier(struct notifier_block *this, unsigned long msg, void switch (msg) { case NETDEV_UNREGISTER: -#ifdef CONFIG_PACKET_MULTICAST if (po->mclist) packet_dev_mclist(dev, po->mclist, -1); - // fallthrough -#endif + /* fallthrough */ + case NETDEV_DOWN: if (dev->ifindex == po->ifindex) { spin_lock(&po->bind_lock); @@ -1856,7 +1820,6 @@ out: #endif -#ifdef CONFIG_SOCK_PACKET static const struct proto_ops packet_ops_spkt = { .family = PF_PACKET, .owner = THIS_MODULE, @@ -1877,7 +1840,6 @@ static const struct proto_ops packet_ops_spkt = { .mmap = sock_no_mmap, .sendpage = sock_no_sendpage, }; -#endif static const struct proto_ops packet_ops = { .family = PF_PACKET, |