* for udp at least is 'valid'.
* Alan Cox : Fixed icmp handling properly
* Alan Cox : Correct error for oversized datagrams
- * Alan Cox : Tidied select() semantics.
- * Alan Cox : udp_err() fixed properly, also now
+ * Alan Cox : Tidied select() semantics.
+ * Alan Cox : udp_err() fixed properly, also now
* select and read wake correctly on errors
* Alan Cox : udp_send verify_area moved to avoid mem leak
* Alan Cox : UDP can count its memory
* does have a high hit rate.
* Olaf Kirch : Don't linearise iovec on sendmsg.
* Andi Kleen : Some cleanups, cache destination entry
- * for connect.
+ * for connect.
* Vitaly E. Lavrov : Transparent proxy revived after year coma.
* Melvin Smith : Check msg_name not msg_namelen in sendto(),
* return ENOTCONN for unconnected sockets (POSIX)
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
-
+
#include <asm/system.h>
#include <asm/uaccess.h>
#include <asm/ioctls.h>
if (!ip_mc_sf_allow(s, loc_addr, rmt_addr, dif))
continue;
goto found;
- }
+ }
s = NULL;
found:
- return s;
+ return s;
}
/*
* This routine is called by the ICMP module when it gets some
* sort of error condition. If err < 0 then the socket should
* be closed and the error returned to the user. If err > 0
- * it's just the icmp type << 8 | icmp code.
+ * it's just the icmp type << 8 | icmp code.
* Header points to the ip header of the error packet. We move
* on past this. Then (as it used to claim before adjustment)
* header points to the first 8 bytes of the udp header. We need
skb->dev->ifindex, udptable );
if (sk == NULL) {
ICMP_INC_STATS_BH(ICMP_MIB_INERRORS);
- return; /* No socket for error */
+ return; /* No socket for error */
}
err = 0;
}
/*
- * RFC1122: OK. Passes ICMP errors back to application, as per
+ * RFC1122: OK. Passes ICMP errors back to application, as per
* 4.1.3.3.
*/
if (!inet->recverr) {
if (len > 0xFFFF)
return -EMSGSIZE;
- /*
+ /*
* Check the flags.
*/
if (up->pending) {
/*
* There are pending frames.
- * The socket lock must be held while it's corked.
+ * The socket lock must be held while it's corked.
*/
lock_sock(sk);
if (likely(up->pending)) {
release_sock(sk);
return -EINVAL;
}
- goto do_append_data;
+ goto do_append_data;
}
release_sock(sk);
}
ulen += sizeof(struct udphdr);
/*
- * Get and verify the address.
+ * Get and verify the address.
*/
if (msg->msg_name) {
struct sockaddr_in * usin = (struct sockaddr_in*)msg->msg_name;
Route will not be used, if at least one option is set.
*/
connected = 1;
- }
+ }
ipc.addr = inet->saddr;
ipc.oif = sk->sk_bound_dev_if;
}
tos = RT_TOS(inet->tos);
if (sock_flag(sk, SOCK_LOCALROUTE) ||
- (msg->msg_flags & MSG_DONTROUTE) ||
+ (msg->msg_flags & MSG_DONTROUTE) ||
(ipc.opt && ipc.opt->is_strictroute)) {
tos |= RTO_ONLINK;
connected = 0;
/*
* IOCTL requests applicable to the UDP protocol
*/
-
+
int udp_ioctl(struct sock *sk, int cmd, unsigned long arg)
{
- switch(cmd)
+ switch(cmd)
{
case SIOCOUTQ:
{
*/
int udp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
- size_t len, int noblock, int flags, int *addr_len)
+ size_t len, int noblock, int flags, int *addr_len)
{
struct inet_sock *inet = inet_sk(sk);
- struct sockaddr_in *sin = (struct sockaddr_in *)msg->msg_name;
- struct sk_buff *skb;
+ struct sockaddr_in *sin = (struct sockaddr_in *)msg->msg_name;
+ struct sk_buff *skb;
int copied, err, copy_only, is_udplite = IS_UDPLITE(sk);
/*
skb = skb_recv_datagram(sk, flags, noblock, &err);
if (!skb)
goto out;
-
- copied = skb->len - sizeof(struct udphdr);
+
+ copied = skb->len - sizeof(struct udphdr);
if (copied > len) {
copied = len;
msg->msg_flags |= MSG_TRUNC;
sin->sin_port = skb->h.uh->source;
sin->sin_addr.s_addr = skb->nh.iph->saddr;
memset(sin->sin_zero, 0, sizeof(sin->sin_zero));
- }
+ }
if (inet->cmsg_flags)
ip_cmsg_recv(msg, skb);
err = copied;
if (flags & MSG_TRUNC)
err = skb->len - sizeof(struct udphdr);
-
+
out_free:
- skb_free_datagram(sk, skb);
+ skb_free_datagram(sk, skb);
out:
- return err;
+ return err;
csum_copy_err:
UDP_INC_STATS_BH(UDP_MIB_INERRORS, is_udplite);
skb_kill_datagram(sk, skb, flags);
if (noblock)
- return -EAGAIN;
+ return -EAGAIN;
goto try_again;
}
/*
* 1003.1g - break association.
*/
-
+
sk->sk_state = TCP_CLOSE;
inet->daddr = 0;
inet->dport = 0;
static int udp_encap_rcv(struct sock * sk, struct sk_buff *skb)
{
#ifndef CONFIG_XFRM
- return 1;
+ return 1;
#else
struct udp_sock *up = udp_sk(sk);
- struct udphdr *uh;
+ struct udphdr *uh;
struct iphdr *iph;
int iphlen, len;
-
+
__u8 *udpdata;
__be32 *udpdata32;
__u16 encap_type = up->encap_type;
return 0;
} else if (len > 2 * sizeof(u32) + sizeof(struct ip_esp_hdr) &&
udpdata32[0] == 0 && udpdata32[1] == 0) {
-
+
/* ESP Packet with Non-IKE marker */
len = sizeof(struct udphdr) + 2 * sizeof(u32);
} else
}
/*
- * All we need to do is get the socket, and then do a checksum.
+ * All we need to do is get the socket, and then do a checksum.
*/
-
+
int __udp4_lib_rcv(struct sk_buff *skb, struct hlist_head udptable[],
int is_udplite)
{
- struct sock *sk;
- struct udphdr *uh = skb->h.uh;
+ struct sock *sk;
+ struct udphdr *uh = skb->h.uh;
unsigned short ulen;
struct rtable *rt = (struct rtable*)skb->dst;
__be32 saddr = skb->nh.iph->saddr;
goto drop;
csum_error:
- /*
- * RFC1122: OK. Discards the bad packet silently (as far as
- * the network is concerned, anyway) as per 4.1.3.4 (MUST).
+ /*
+ * RFC1122: OK. Discards the bad packet silently (as far as
+ * the network is concerned, anyway) as per 4.1.3.4 (MUST).
*/
LIMIT_NETDEBUG(KERN_DEBUG "UDP%s: bad checksum. From %d.%d.%d.%d:%d to %d.%d.%d.%d:%d ulen %d\n",
is_udplite? "-Lite" : "",
release_sock(sk);
}
break;
-
+
case UDP_ENCAP:
switch (val) {
case 0:
up->pcflag |= UDPLITE_SEND_CC;
break;
- /* The receiver specifies a minimum checksum coverage value. To make
- * sense, this should be set to at least 8 (as done below). If zero is
+ /* The receiver specifies a minimum checksum coverage value. To make
+ * sense, this should be set to at least 8 (as done below). If zero is
* used, this again means full checksum coverage. */
case UDPLITE_RECV_CSCOV:
if (!up->pcflag) /* Disable the option on UDP sockets */
return -EFAULT;
len = min_t(unsigned int, len, sizeof(int));
-
+
if(len < 0)
return -EINVAL;
return -ENOPROTOOPT;
};
- if(put_user(len, optlen))
- return -EFAULT;
+ if(put_user(len, optlen))
+ return -EFAULT;
if(copy_to_user(optval, &val,len))
return -EFAULT;
- return 0;
+ return 0;
}
int udp_getsockopt(struct sock *sk, int level, int optname,
* @sock - socket
* @wait - poll table
*
- * This is same as datagram poll, except for the special case of
+ * This is same as datagram poll, except for the special case of
* blocking sockets. If application is using a blocking fd
* and a packet with checksum error is in the queue;
* then it could get return from select indicating data available
}
return mask;
-
+
}
struct proto udp_prot = {
- .name = "UDP",
+ .name = "UDP",
.owner = THIS_MODULE,
.close = udp_lib_close,
.connect = ip4_datagram_connect,
sprintf(tmpbuf, "%4d: %08X:%04X %08X:%04X"
" %02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %p",
- bucket, src, srcp, dest, destp, sp->sk_state,
+ bucket, src, srcp, dest, destp, sp->sk_state,
atomic_read(&sp->sk_wmem_alloc),
atomic_read(&sp->sk_rmem_alloc),
0, 0L, 0, sock_i_uid(sp), 0, sock_i_ino(sp),
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff