#include <net/ip.h>
#include <net/protocol.h>
#include <net/route.h>
-#include <net/tcp.h>
-#include <net/udp.h>
#include <linux/skbuff.h>
#include <net/sock.h>
#include <net/arp.h>
#include <net/icmp.h>
-#include <net/raw.h>
#include <net/checksum.h>
#include <net/inetpeer.h>
#include <net/checksum.h>
#include <linux/netfilter_bridge.h>
#include <linux/mroute.h>
#include <linux/netlink.h>
+#include <linux/tcp.h>
-/*
- * Shall we try to damage output packets if routing dev changes?
- */
-
-int sysctl_ip_dynaddr;
int sysctl_ip_default_ttl = IPDEFTTL;
/* Generate a checksum for an outgoing IP datagram. */
dst_output);
}
+EXPORT_SYMBOL_GPL(ip_build_and_send_pkt);
+
static inline int ip_finish_output2(struct sk_buff *skb)
{
struct dst_entry *dst = skb->dst;
return -EINVAL;
}
-int ip_finish_output(struct sk_buff *skb)
+static inline int ip_finish_output(struct sk_buff *skb)
{
struct net_device *dev = skb->dst->dev;
{
IP_INC_STATS(IPSTATS_MIB_OUTREQUESTS);
- if (skb->len > dst_mtu(skb->dst) && !skb_shinfo(skb)->tso_size)
+ if (skb->len > dst_mtu(skb->dst) &&
+ !(skb_shinfo(skb)->ufo_size || skb_shinfo(skb)->tso_size))
return ip_fragment(skb, ip_finish_output);
else
return ip_finish_output(skb);
if (ip_route_output_flow(&rt, &fl, sk, 0))
goto no_route;
}
- __sk_dst_set(sk, &rt->u.dst);
- tcp_v4_setup_caps(sk, &rt->u.dst);
+ sk_setup_caps(sk, &rt->u.dst);
}
skb->dst = dst_clone(&rt->u.dst);
#endif
#ifdef CONFIG_NETFILTER
to->nfmark = from->nfmark;
- to->nfcache = from->nfcache;
/* Connection association is same as pre-frag packet */
nf_conntrack_put(to->nfct);
to->nfct = from->nfct;
nf_conntrack_get(to->nfct);
to->nfctinfo = from->nfctinfo;
+#if defined(CONFIG_IP_VS) || defined(CONFIG_IP_VS_MODULE)
+ to->ipvs_property = from->ipvs_property;
+#endif
#ifdef CONFIG_BRIDGE_NETFILTER
nf_bridge_put(to->nf_bridge);
to->nf_bridge = from->nf_bridge;
*/
if ((skb2 = alloc_skb(len+hlen+ll_rs, GFP_ATOMIC)) == NULL) {
- NETDEBUG(printk(KERN_INFO "IP: frag: no memory for new fragment!\n"));
+ NETDEBUG(KERN_INFO "IP: frag: no memory for new fragment!\n");
err = -ENOMEM;
goto fail;
}
return csum;
}
+inline int ip_ufo_append_data(struct sock *sk,
+ int getfrag(void *from, char *to, int offset, int len,
+ int odd, struct sk_buff *skb),
+ void *from, int length, int hh_len, int fragheaderlen,
+ int transhdrlen, int mtu,unsigned int flags)
+{
+ struct sk_buff *skb;
+ int err;
+
+ /* There is support for UDP fragmentation offload by network
+ * device, so create one single skb packet containing complete
+ * udp datagram
+ */
+ if ((skb = skb_peek_tail(&sk->sk_write_queue)) == NULL) {
+ skb = sock_alloc_send_skb(sk,
+ hh_len + fragheaderlen + transhdrlen + 20,
+ (flags & MSG_DONTWAIT), &err);
+
+ if (skb == NULL)
+ return err;
+
+ /* reserve space for Hardware header */
+ skb_reserve(skb, hh_len);
+
+ /* create space for UDP/IP header */
+ skb_put(skb,fragheaderlen + transhdrlen);
+
+ /* initialize network header pointer */
+ skb->nh.raw = skb->data;
+
+ /* initialize protocol header pointer */
+ skb->h.raw = skb->data + fragheaderlen;
+
+ skb->ip_summed = CHECKSUM_HW;
+ skb->csum = 0;
+ sk->sk_sndmsg_off = 0;
+ }
+
+ err = skb_append_datato_frags(sk,skb, getfrag, from,
+ (length - transhdrlen));
+ if (!err) {
+ /* specify the length of each IP datagram fragment*/
+ skb_shinfo(skb)->ufo_size = (mtu - fragheaderlen);
+ __skb_queue_tail(&sk->sk_write_queue, skb);
+
+ return 0;
+ }
+ /* There is not enough support do UFO ,
+ * so follow normal path
+ */
+ kfree_skb(skb);
+ return err;
+}
+
/*
* ip_append_data() and ip_append_page() can make one large IP datagram
* from many pieces of data. Each pieces will be holded on the socket
csummode = CHECKSUM_HW;
inet->cork.length += length;
+ if (((length > mtu) && (sk->sk_protocol == IPPROTO_UDP)) &&
+ (rt->u.dst.dev->features & NETIF_F_UFO)) {
+
+ if(ip_ufo_append_data(sk, getfrag, from, length, hh_len,
+ fragheaderlen, transhdrlen, mtu, flags))
+ goto error;
+
+ return 0;
+ }
/* So, what's going on in the loop below?
*
return -EINVAL;
inet->cork.length += size;
+ if ((sk->sk_protocol == IPPROTO_UDP) &&
+ (rt->u.dst.dev->features & NETIF_F_UFO))
+ skb_shinfo(skb)->ufo_size = (mtu - fragheaderlen);
+
while (size > 0) {
int i;
- /* Check if the remaining data fits into current packet. */
- len = mtu - skb->len;
- if (len < size)
- len = maxfraglen - skb->len;
+ if (skb_shinfo(skb)->ufo_size)
+ len = size;
+ else {
+
+ /* Check if the remaining data fits into current packet. */
+ len = mtu - skb->len;
+ if (len < size)
+ len = maxfraglen - skb->len;
+ }
if (len <= 0) {
struct sk_buff *skb_prev;
char *data;
int alloclen;
skb_prev = skb;
- if (skb_prev)
- fraggap = skb_prev->len - maxfraglen;
- else
- fraggap = 0;
+ fraggap = skb_prev->len - maxfraglen;
alloclen = fragheaderlen + hh_len + fraggap + 15;
skb = sock_wmalloc(sk, alloclen, 1, sk->sk_allocation);
#endif
}
-EXPORT_SYMBOL(ip_finish_output);
EXPORT_SYMBOL(ip_fragment);
EXPORT_SYMBOL(ip_generic_getfrag);
EXPORT_SYMBOL(ip_queue_xmit);
EXPORT_SYMBOL(ip_send_check);
-
-#ifdef CONFIG_SYSCTL
-EXPORT_SYMBOL(sysctl_ip_default_ttl);
-#endif
projects / karo-tx-linux.git / blobdiff