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Diffstat (limited to 'pfinet/linux-src/net/ipv4/udp.c')
-rw-r--r--pfinet/linux-src/net/ipv4/udp.c104
1 files changed, 56 insertions, 48 deletions
diff --git a/pfinet/linux-src/net/ipv4/udp.c b/pfinet/linux-src/net/ipv4/udp.c
index 909e858f..87ff84ce 100644
--- a/pfinet/linux-src/net/ipv4/udp.c
+++ b/pfinet/linux-src/net/ipv4/udp.c
@@ -19,8 +19,8 @@
* 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
@@ -55,7 +55,7 @@
* 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)
@@ -68,10 +68,10 @@
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
-
+
/* RFC1122 Status:
4.1.3.1 (Ports):
- SHOULD send ICMP_PORT_UNREACHABLE in response to datagrams to
+ SHOULD send ICMP_PORT_UNREACHABLE in response to datagrams to
an un-listened port. (OK)
4.1.3.2 (IP Options)
MUST pass IP options from IP -> application (OK)
@@ -399,7 +399,7 @@ static inline struct sock *udp_v4_mcast_next(struct sock *sk,
* 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
@@ -463,16 +463,16 @@ void udp_err(struct sk_buff *skb, unsigned char *dp, int len)
}
/*
- * Various people wanted BSD UDP semantics. Well they've come
+ * Various people wanted BSD UDP semantics. Well they've come
* back out because they slow down response to stuff like dead
* or unreachable name servers and they screw term users something
- * chronic. Oh and it violates RFC1122. So basically fix your
+ * chronic. Oh and it violates RFC1122. So basically fix your
* client code people.
*/
-
+
/*
- * RFC1122: OK. Passes ICMP errors back to application, as per
- * 4.1.3.3. After the comment above, that should be no surprise.
+ * RFC1122: OK. Passes ICMP errors back to application, as per
+ * 4.1.3.3. After the comment above, that should be no surprise.
*/
if (!harderr && !sk->ip_recverr)
@@ -497,7 +497,7 @@ static unsigned short udp_check(struct udphdr *uh, int len, unsigned long saddr,
return(csum_tcpudp_magic(saddr, daddr, len, IPPROTO_UDP, base));
}
-struct udpfakehdr
+struct udpfakehdr
{
struct udphdr uh;
u32 saddr;
@@ -512,8 +512,8 @@ struct udpfakehdr
* card and provide an additional callback mode for direct user->board I/O
* transfers. That one will be fun.
*/
-
-static int udp_getfrag(const void *p, char * to, unsigned int offset, unsigned int fraglen)
+
+static int udp_getfrag(const void *p, char * to, unsigned int offset, unsigned int fraglen)
{
struct udpfakehdr *ufh = (struct udpfakehdr *)p;
if (offset==0) {
@@ -522,7 +522,7 @@ static int udp_getfrag(const void *p, char * to, unsigned int offset, unsigned i
return -EFAULT;
ufh->wcheck = csum_partial((char *)ufh, sizeof(struct udphdr),
ufh->wcheck);
- ufh->uh.check = csum_tcpudp_magic(ufh->saddr, ufh->daddr,
+ ufh->uh.check = csum_tcpudp_magic(ufh->saddr, ufh->daddr,
ntohs(ufh->uh.len),
IPPROTO_UDP, ufh->wcheck);
if (ufh->uh.check == 0)
@@ -542,8 +542,8 @@ static int udp_getfrag(const void *p, char * to, unsigned int offset, unsigned i
* CONFIG_FAST_NET set for >10Mb/second boards to activate this sort of coding.
* Timing needed to verify if this is a valid decision.
*/
-
-static int udp_getfrag_nosum(const void *p, char * to, unsigned int offset, unsigned int fraglen)
+
+static int udp_getfrag_nosum(const void *p, char * to, unsigned int offset, unsigned int fraglen)
{
struct udpfakehdr *ufh = (struct udpfakehdr *)p;
@@ -582,7 +582,7 @@ int udp_sendmsg(struct sock *sk, struct msghdr *msg, int len)
if (len < 0 || len > 0xFFFF)
return -EMSGSIZE;
- /*
+ /*
* Check the flags.
*/
@@ -600,9 +600,9 @@ int udp_sendmsg(struct sock *sk, struct msghdr *msg, int len)
#endif
/*
- * Get and verify the address.
+ * Get and verify the address.
*/
-
+
if (msg->msg_name) {
struct sockaddr_in * usin = (struct sockaddr_in*)msg->msg_name;
if (msg->msg_namelen < sizeof(*usin))
@@ -673,7 +673,7 @@ int udp_sendmsg(struct sock *sk, struct msghdr *msg, int len)
connected = 0;
}
tos = RT_TOS(sk->ip_tos);
- if (sk->localroute || (msg->msg_flags&MSG_DONTROUTE) ||
+ if (sk->localroute || (msg->msg_flags&MSG_DONTROUTE) ||
(ipc.opt && ipc.opt->is_strictroute)) {
tos |= RTO_ONLINK;
connected = 0;
@@ -703,11 +703,11 @@ int udp_sendmsg(struct sock *sk, struct msghdr *msg, int len)
(msg->msg_flags&MSG_PROXY ? RTO_TPROXY : 0) |
#endif
tos, ipc.oif);
- if (err)
+ if (err)
goto out;
err = -EACCES;
- if (rt->rt_flags&RTCF_BROADCAST && !sk->broadcast)
+ if (rt->rt_flags&RTCF_BROADCAST && !sk->broadcast)
goto out;
if (connected && sk->dst_cache == NULL)
sk->dst_cache = dst_clone(&rt->u.dst);
@@ -739,13 +739,19 @@ out:
return err;
}
+#ifdef _HURD_
+
+#define udp_ioctl 0
+
+#else
+
/*
* IOCTL requests applicable to the UDP protocol
*/
-
+
int udp_ioctl(struct sock *sk, int cmd, unsigned long arg)
{
- switch(cmd)
+ switch(cmd)
{
case TIOCOUTQ:
{
@@ -782,6 +788,8 @@ int udp_ioctl(struct sock *sk, int cmd, unsigned long arg)
return(0);
}
+#endif
+
#ifndef HAVE_CSUM_COPY_USER
#undef CONFIG_UDP_DELAY_CSUM
#endif
@@ -809,7 +817,7 @@ int udp_recvmsg(struct sock *sk, struct msghdr *msg, int len,
skb = skb_recv_datagram(sk, flags, noblock, &err);
if (!skb)
goto out;
-
+
copied = skb->len - sizeof(struct udphdr);
if (copied > len) {
copied = len;
@@ -824,7 +832,7 @@ int udp_recvmsg(struct sock *sk, struct msghdr *msg, int len,
err = skb_copy_datagram_iovec(skb, sizeof(struct udphdr), msg->msg_iov,
copied);
} else if (copied > msg->msg_iov[0].iov_len || (msg->msg_flags&MSG_TRUNC)) {
- if ((unsigned short)csum_fold(csum_partial(skb->h.raw, skb->len, skb->csum)))
+ if ((unsigned short)csum_fold(csum_partial(skb->h.raw, skb->len, skb->csum)))
goto csum_copy_err;
err = skb_copy_datagram_iovec(skb, sizeof(struct udphdr), msg->msg_iov,
copied);
@@ -833,11 +841,11 @@ int udp_recvmsg(struct sock *sk, struct msghdr *msg, int len,
err = 0;
csum = csum_partial(skb->h.raw, sizeof(struct udphdr), skb->csum);
- csum = csum_and_copy_to_user((char*)&skb->h.uh[1], msg->msg_iov[0].iov_base,
+ csum = csum_and_copy_to_user((char*)&skb->h.uh[1], msg->msg_iov[0].iov_base,
copied, csum, &err);
if (err)
goto out_free;
- if ((unsigned short)csum_fold(csum))
+ if ((unsigned short)csum_fold(csum))
goto csum_copy_err;
}
#endif
@@ -851,7 +859,7 @@ int udp_recvmsg(struct sock *sk, struct msghdr *msg, int len,
/*
* Check any passed addresses
*/
- if (addr_len)
+ if (addr_len)
*addr_len=sizeof(*sin);
sin->sin_family = AF_INET;
@@ -878,7 +886,7 @@ int udp_recvmsg(struct sock *sk, struct msghdr *msg, int len,
if (sk->ip_cmsg_flags)
ip_cmsg_recv(msg, skb);
err = copied;
-
+
out_free:
skb_free_datagram(sk, skb);
out:
@@ -889,11 +897,11 @@ csum_copy_err:
udp_statistics.UdpInErrors++;
skb_free_datagram(sk, skb);
- /*
+ /*
* Error for blocking case is chosen to masquerade
* as some normal condition.
*/
- return (flags&MSG_DONTWAIT) ? -EAGAIN : -EHOSTUNREACH;
+ return (flags&MSG_DONTWAIT) ? -EAGAIN : -EHOSTUNREACH;
#endif
}
@@ -903,14 +911,14 @@ int udp_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
struct rtable *rt;
int err;
-
- if (addr_len < sizeof(*usin))
+
+ if (addr_len < sizeof(*usin))
return(-EINVAL);
/*
* 1003.1g - break association.
*/
-
+
if (usin->sin_family==AF_UNSPEC)
{
sk->saddr=INADDR_ANY;
@@ -922,7 +930,7 @@ int udp_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
return 0;
}
- if (usin->sin_family && usin->sin_family != AF_INET)
+ if (usin->sin_family && usin->sin_family != AF_INET)
return(-EAFNOSUPPORT);
dst_release(xchg(&sk->dst_cache, NULL));
@@ -1056,9 +1064,9 @@ int udp_chkaddr(struct sk_buff *skb)
#endif
/*
- * 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 udp_rcv(struct sk_buff *skb, unsigned short len)
{
struct sock *sk;
@@ -1076,7 +1084,7 @@ int udp_rcv(struct sk_buff *skb, unsigned short len)
/*
* Get the header.
*/
-
+
uh = skb->h.uh;
__skb_pull(skb, skb->h.raw - skb->data);
@@ -1085,7 +1093,7 @@ int udp_rcv(struct sk_buff *skb, unsigned short len)
/*
* Validate the packet and the UDP length.
*/
-
+
ulen = ntohs(uh->len);
if (ulen > len || ulen < sizeof(*uh)) {
@@ -1100,13 +1108,13 @@ int udp_rcv(struct sk_buff *skb, unsigned short len)
if (uh->check &&
(((skb->ip_summed==CHECKSUM_HW)&&udp_check(uh,ulen,saddr,daddr,skb->csum)) ||
((skb->ip_summed==CHECKSUM_NONE) &&
- (udp_check(uh,ulen,saddr,daddr, csum_partial((char*)uh, ulen, 0))))))
+ (udp_check(uh,ulen,saddr,daddr, csum_partial((char*)uh, ulen, 0))))))
goto csum_error;
#else
if (uh->check==0)
skb->ip_summed = CHECKSUM_UNNECESSARY;
else if (skb->ip_summed==CHECKSUM_HW) {
- if (udp_check(uh,ulen,saddr,daddr,skb->csum))
+ if (udp_check(uh,ulen,saddr,daddr,skb->csum))
goto csum_error;
skb->ip_summed = CHECKSUM_UNNECESSARY;
} else if (skb->ip_summed != CHECKSUM_UNNECESSARY)
@@ -1124,11 +1132,11 @@ int udp_rcv(struct sk_buff *skb, unsigned short len)
else
#endif
sk = udp_v4_lookup(saddr, uh->source, daddr, uh->dest, skb->dev->ifindex);
-
+
if (sk == NULL) {
#ifdef CONFIG_UDP_DELAY_CSUM
if (skb->ip_summed != CHECKSUM_UNNECESSARY &&
- (unsigned short)csum_fold(csum_partial((char*)uh, ulen, skb->csum)))
+ (unsigned short)csum_fold(csum_partial((char*)uh, ulen, skb->csum)))
goto csum_error;
#endif
udp_statistics.UdpNoPorts++;
@@ -1145,9 +1153,9 @@ int udp_rcv(struct sk_buff *skb, unsigned short len)
return 0;
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).
*/
NETDEBUG(printk(KERN_DEBUG "UDP: bad checksum. From %d.%d.%d.%d:%d to %d.%d.%d.%d:%d ulen %d\n",
NIPQUAD(saddr),
generated by cgit v1.2.3 (git 2.51.0) at 2025-12-29 00:51:56 +0000