From 259af48e5a0c7989be4aa7c57fe95c1a1a40967e Mon Sep 17 00:00:00 2001
From: Aastha Mehta <aasthakm@mpi-sws.org>
Date: Fri, 12 May 2017 14:37:07 +0200
Subject: [PATCH] prints leading to udp functions
---
net/ipv4/ip_input.c | 21 +++++++++++++++++++++
net/ipv4/udp.c | 24 ++++++++++++++++++++++++
2 files changed, 45 insertions(+)
diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c
index 34940f901..4e29050aa 100644
--- a/net/ipv4/ip_input.c
+++ b/net/ipv4/ip_input.c
@@ -219,6 +219,13 @@ static int ip_local_deliver_finish(struct net *net, struct sock *sk, struct sk_b
resubmit:
raw = raw_local_deliver(skb, protocol);
+#ifdef CONFIG_XEN_SME
+ memset(dbg_buff, 0, DBG_BUF_SIZE);
+ sprintf(dbg_buff, "%s:%d caller: %pS, raw: %d", __func__, __LINE__,
+ __builtin_return_address(0), raw);
+ xsl_print_sk_buff(skb, dbg_buff);
+#endif
+
ipprot = rcu_dereference(inet_protos[protocol]);
if (ipprot) {
int ret;
@@ -230,7 +237,21 @@ static int ip_local_deliver_finish(struct net *net, struct sock *sk, struct sk_b
}
nf_reset(skb);
}
+#ifdef CONFIG_XEN_SME
+ memset(dbg_buff, 0, DBG_BUF_SIZE);
+ sprintf(dbg_buff, "%s:%d caller: %pS", __func__, __LINE__,
+ __builtin_return_address(0));
+ xsl_print_sk_buff(skb, dbg_buff);
+#endif
+
ret = ipprot->handler(skb);
+#ifdef CONFIG_XEN_SME
+ memset(dbg_buff, 0, DBG_BUF_SIZE);
+ sprintf(dbg_buff, "%s:%d caller: %pS", __func__, __LINE__,
+ __builtin_return_address(0));
+ xsl_print_sk_buff(skb, dbg_buff);
+#endif
+
if (ret < 0) {
protocol = -ret;
goto resubmit;
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 5bab6c3f7..f5ee1ace7 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -79,6 +79,10 @@
#define pr_fmt(fmt) "UDP: " fmt
+#ifdef CONFIG_XEN_SME
+#include "../../drivers/net/ethernet/broadcom/bnx2x/sme/xen_sme_hooks.h"
+#define DBG_BUF_SIZE 256
+#endif
#include <asm/uaccess.h>
#include <asm/ioctls.h>
#include <linux/bootmem.h>
@@ -1505,6 +1509,13 @@ int udp_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
int rc;
int is_udplite = IS_UDPLITE(sk);
+#ifdef CONFIG_XEN_SME
+ char dbg_buff[DBG_BUF_SIZE];
+ memset(dbg_buff, 0, DBG_BUF_SIZE);
+ sprintf(dbg_buff, "%s:%d caller: %pS", __func__, __LINE__,
+ __builtin_return_address(0));
+ xsl_print_sk_buff(skb, dbg_buff);
+#endif
/*
* Charge it to the socket, dropping if the queue is full.
*/
@@ -1597,6 +1608,12 @@ int udp_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
rc = 0;
+#ifdef CONFIG_XEN_SME
+ memset(dbg_buff, 0, DBG_BUF_SIZE);
+ sprintf(dbg_buff, "%s:%d caller: %pS, sock owned: %d", __func__, __LINE__,
+ __builtin_return_address(0), (sk ? sk->sk_lock.owned : -2));
+ xsl_print_sk_buff(skb, dbg_buff);
+#endif
ipv4_pktinfo_prepare(sk, skb);
bh_lock_sock(sk);
if (!sock_owned_by_user(sk))
@@ -1739,6 +1756,13 @@ int __udp4_lib_rcv(struct sk_buff *skb, struct udp_table *udptable,
__be32 saddr, daddr;
struct net *net = dev_net(skb->dev);
+#ifdef CONFIG_XEN_SME
+ char dbg_buff[DBG_BUF_SIZE];
+ memset(dbg_buff, 0, DBG_BUF_SIZE);
+ sprintf(dbg_buff, "%s:%d caller: %pS", __func__, __LINE__,
+ __builtin_return_address(0));
+ xsl_print_sk_buff(skb, dbg_buff);
+#endif
/*
* Validate the packet.
*/
--
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