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authorDavid S. Miller <davem@davemloft.net>2010-02-05 16:29:48 -0800
committerDavid S. Miller <davem@davemloft.net>2010-02-05 16:29:48 -0800
commit889b8f964f2f226b7cd5a0a515109e3d8d9d1613 (patch)
treec576152db1b3ea0b68206393735aec566e9aadf3 /net/packet
parent7aeef972cce30b0ab04047e07918b04d867e7a29 (diff)
downloadop-kernel-dev-889b8f964f2f226b7cd5a0a515109e3d8d9d1613.zip
op-kernel-dev-889b8f964f2f226b7cd5a0a515109e3d8d9d1613.tar.gz
packet: Kill CONFIG_PACKET_MMAP.
Early on this was an experimental facility that few people other than Alexey Kuznetsov played with. Now it's a pretty fundamental thing and as people add more features to AF_PACKET sockets this config options creates ifdef spaghetti. So kill it off. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/packet')
-rw-r--r--net/packet/Kconfig10
-rw-r--r--net/packet/af_packet.c29
2 files changed, 0 insertions, 39 deletions
diff --git a/net/packet/Kconfig b/net/packet/Kconfig
index 34ff93f..0060e3b 100644
--- a/net/packet/Kconfig
+++ b/net/packet/Kconfig
@@ -14,13 +14,3 @@ config PACKET
be called af_packet.
If unsure, say Y.
-
-config PACKET_MMAP
- bool "Packet socket: mmapped IO"
- depends on PACKET
- help
- If you say Y here, the Packet protocol driver will use an IO
- mechanism that results in faster communication.
-
- If unsure, say N.
-
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 178e293..6ecb426 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -157,7 +157,6 @@ struct packet_mreq_max {
unsigned char mr_address[MAX_ADDR_LEN];
};
-#ifdef CONFIG_PACKET_MMAP
static int packet_set_ring(struct sock *sk, struct tpacket_req *req,
int closing, int tx_ring);
@@ -177,7 +176,6 @@ struct packet_ring_buffer {
struct packet_sock;
static int tpacket_snd(struct packet_sock *po, struct msghdr *msg);
-#endif
static void packet_flush_mclist(struct sock *sk);
@@ -185,11 +183,9 @@ struct packet_sock {
/* struct sock has to be the first member of packet_sock */
struct sock sk;
struct tpacket_stats stats;
-#ifdef CONFIG_PACKET_MMAP
struct packet_ring_buffer rx_ring;
struct packet_ring_buffer tx_ring;
int copy_thresh;
-#endif
spinlock_t bind_lock;
struct mutex pg_vec_lock;
unsigned int running:1, /* prot_hook is attached*/
@@ -199,13 +195,11 @@ struct packet_sock {
int ifindex; /* bound device */
__be16 num;
struct packet_mclist *mclist;
-#ifdef CONFIG_PACKET_MMAP
atomic_t mapped;
enum tpacket_versions tp_version;
unsigned int tp_hdrlen;
unsigned int tp_reserve;
unsigned int tp_loss:1;
-#endif
struct packet_type prot_hook ____cacheline_aligned_in_smp;
};
@@ -219,8 +213,6 @@ struct packet_skb_cb {
#define PACKET_SKB_CB(__skb) ((struct packet_skb_cb *)((__skb)->cb))
-#ifdef CONFIG_PACKET_MMAP
-
static void __packet_set_status(struct packet_sock *po, void *frame, int status)
{
union {
@@ -315,8 +307,6 @@ static inline void packet_increment_head(struct packet_ring_buffer *buff)
buff->head = buff->head != buff->frame_max ? buff->head+1 : 0;
}
-#endif
-
static inline struct packet_sock *pkt_sk(struct sock *sk)
{
return (struct packet_sock *)sk;
@@ -640,7 +630,6 @@ drop:
return 0;
}
-#ifdef CONFIG_PACKET_MMAP
static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev,
struct packet_type *pt, struct net_device *orig_dev)
{
@@ -1056,7 +1045,6 @@ out:
mutex_unlock(&po->pg_vec_lock);
return err;
}
-#endif
static inline struct sk_buff *packet_alloc_skb(struct sock *sk, size_t prepad,
size_t reserve, size_t len,
@@ -1248,13 +1236,11 @@ out:
static int packet_sendmsg(struct kiocb *iocb, struct socket *sock,
struct msghdr *msg, size_t len)
{
-#ifdef CONFIG_PACKET_MMAP
struct sock *sk = sock->sk;
struct packet_sock *po = pkt_sk(sk);
if (po->tx_ring.pg_vec)
return tpacket_snd(po, msg);
else
-#endif
return packet_snd(sock, msg, len);
}
@@ -1268,9 +1254,7 @@ static int packet_release(struct socket *sock)
struct sock *sk = sock->sk;
struct packet_sock *po;
struct net *net;
-#ifdef CONFIG_PACKET_MMAP
struct tpacket_req req;
-#endif
if (!sk)
return 0;
@@ -1299,7 +1283,6 @@ static int packet_release(struct socket *sock)
packet_flush_mclist(sk);
-#ifdef CONFIG_PACKET_MMAP
memset(&req, 0, sizeof(req));
if (po->rx_ring.pg_vec)
@@ -1307,7 +1290,6 @@ static int packet_release(struct socket *sock)
if (po->tx_ring.pg_vec)
packet_set_ring(sk, &req, 1, 1);
-#endif
/*
* Now the socket is dead. No more input will appear.
@@ -1872,7 +1854,6 @@ packet_setsockopt(struct socket *sock, int level, int optname, char __user *optv
return ret;
}
-#ifdef CONFIG_PACKET_MMAP
case PACKET_RX_RING:
case PACKET_TX_RING:
{
@@ -1943,7 +1924,6 @@ packet_setsockopt(struct socket *sock, int level, int optname, char __user *optv
po->tp_loss = !!val;
return 0;
}
-#endif
case PACKET_AUXDATA:
{
int val;
@@ -2041,7 +2021,6 @@ static int packet_getsockopt(struct socket *sock, int level, int optname,
data = &val;
break;
-#ifdef CONFIG_PACKET_MMAP
case PACKET_VERSION:
if (len > sizeof(int))
len = sizeof(int);
@@ -2077,7 +2056,6 @@ static int packet_getsockopt(struct socket *sock, int level, int optname,
val = po->tp_loss;
data = &val;
break;
-#endif
default:
return -ENOPROTOOPT;
}
@@ -2197,11 +2175,6 @@ static int packet_ioctl(struct socket *sock, unsigned int cmd,
return 0;
}
-#ifndef CONFIG_PACKET_MMAP
-#define packet_mmap sock_no_mmap
-#define packet_poll datagram_poll
-#else
-
static unsigned int packet_poll(struct file *file, struct socket *sock,
poll_table *wait)
{
@@ -2483,8 +2456,6 @@ out:
mutex_unlock(&po->pg_vec_lock);
return err;
}
-#endif
-
static const struct proto_ops packet_ops_spkt = {
.family = PF_PACKET,
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