debug prints

net/ipv4/ip_output.c

@@ -42,6 +42,11 @@
  *		Hirokazu Takahashi:	sendfile() on UDP works now.
  */
 
+#ifdef CONFIG_XEN_SME
+#include "../../drivers/net/xen-netback/sme/xen_sme_hooks.h"
+#define DBG_BUF_SIZE 64
+#endif
+
 #include <asm/uaccess.h>
 #include <linux/module.h>
 #include <linux/types.h>
@@ -551,6 +556,13 @@ int ip_do_fragment(struct net *net, struct sock *sk, struct sk_buff *skb,
 	struct rtable *rt = skb_rtable(skb);
 	int err = 0;
 
+#ifdef CONFIG_XEN_SME
+	char dbg_buff[DBG_BUF_SIZE];
+	memset(dbg_buff, 0, DBG_BUF_SIZE);
+	sprintf(dbg_buff, "%s:%d", __func__, __LINE__);
+	xsl_print_sk_buff(skb, dbg_buff);
+#endif
+
 	/* for offloaded checksums cleanup checksum before fragmentation */
 	if (skb->ip_summed == CHECKSUM_PARTIAL &&
 	    (err = skb_checksum_help(skb)))

net/ipv4/tcp_output.c

@@ -34,6 +34,11 @@
  *
  */
 
+#ifdef CONFIG_XEN_SME
+#include "../../drivers/net/xen-netback/sme/xen_sme_hooks.h"
+#define DBG_BUF_SIZE 64
+#endif
+
 #define pr_fmt(fmt) "TCP: " fmt
 
 #include <net/tcp.h>
@@ -1747,6 +1752,13 @@ static int tso_fragment(struct sock *sk, struct sk_buff *skb, unsigned int len,
 	int nlen = skb->len - len;
 	u8 flags;
 
+#ifdef CONFIG_XEN_SME
+	char dbg_buff[DBG_BUF_SIZE];
+	memset(dbg_buff, 0, DBG_BUF_SIZE);
+	sprintf(dbg_buff, "%s:%d", __func__, __LINE__);
+	xsl_print_sk_buff(skb, dbg_buff);
+#endif
+
 	/* All of a TSO frame must be composed of paged data.  */
 	if (skb->len != skb->data_len)
 		return tcp_fragment(sk, skb, len, mss_now, gfp);