[PATCH 4/6] cifs: display the endpoint IP details in DebugData

[Shyam Prasad N <nspmangalore@gmail.com>]

With multichannel, it is useful to know the src port details
for each channel. This change will print the ip addr and
port details for both the socket dest and src endpoints.

Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
---
 fs/smb/client/cifs_debug.c | 46 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)

diff --git a/fs/smb/client/cifs_debug.c b/fs/smb/client/cifs_debug.c
index 17c884724590..d5fd3681f56e 100644
--- a/fs/smb/client/cifs_debug.c
+++ b/fs/smb/client/cifs_debug.c
@@ -12,6 +12,7 @@
 #include <linux/module.h>
 #include <linux/proc_fs.h>
 #include <linux/uaccess.h>
+#include <net/inet_sock.h>
 #include "cifspdu.h"
 #include "cifsglob.h"
 #include "cifsproto.h"
@@ -146,6 +147,30 @@ cifs_dump_channel(struct seq_file *m, int i, struct cifs_chan *chan)
 		   in_flight(server),
 		   atomic_read(&server->in_send),
 		   atomic_read(&server->num_waiters));
+
+#ifndef CONFIG_CIFS_SMB_DIRECT
+	if (server->ssocket) {
+		if (server->dstaddr.ss_family == AF_INET6) {
+			struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)&server->dstaddr;
+			struct sock *sk = server->ssocket->sk;
+			struct inet_sock *inet = inet_sk(server->ssocket->sk);
+			seq_printf(m, "\n\t\tIPv6 Dest: [%pI6]:%d Src: [%pI6]:%d",
+				   &ipv6->sin6_addr,
+				   ntohs(ipv6->sin6_port),
+				   &sk->sk_v6_rcv_saddr.s6_addr32,
+				   ntohs(inet->inet_sport));
+		} else {
+			struct sockaddr_in *ipv4 = (struct sockaddr_in *)&server->dstaddr;
+			struct inet_sock *inet = inet_sk(server->ssocket->sk);
+			seq_printf(m, "\n\t\tIPv4 Dest: %pI4:%d Src: %pI4:%d",
+				   &ipv4->sin_addr,
+				   ntohs(ipv4->sin_port),
+				   &inet->inet_saddr,
+				   ntohs(inet->inet_sport));
+		}
+	}
+#endif
+
 }
 
 static void
@@ -351,6 +376,27 @@ static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
 			atomic_read(&server->smbd_conn->mr_ready_count),
 			atomic_read(&server->smbd_conn->mr_used_count));
 skip_rdma:
+#else
+		if (server->ssocket) {
+			if (server->dstaddr.ss_family == AF_INET6) {
+				struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)&server->dstaddr;
+				struct sock *sk = server->ssocket->sk;
+				struct inet_sock *inet = inet_sk(server->ssocket->sk);
+				seq_printf(m, "\nIPv6 Dest: [%pI6]:%d Src: [%pI6]:%d",
+					   &ipv6->sin6_addr,
+					   ntohs(ipv6->sin6_port),
+					   &sk->sk_v6_rcv_saddr.s6_addr32,
+					   ntohs(inet->inet_sport));
+			} else {
+				struct sockaddr_in *ipv4 = (struct sockaddr_in *)&server->dstaddr;
+				struct inet_sock *inet = inet_sk(server->ssocket->sk);
+				seq_printf(m, "\nIPv4 Dest: %pI4:%d Src: %pI4:%d",
+					   &ipv4->sin_addr,
+					   ntohs(ipv4->sin_port),
+					   &inet->inet_saddr,
+					   ntohs(inet->inet_sport));
+			}
+		}
 #endif
 		seq_printf(m, "\nNumber of credits: %d,%d,%d Dialect 0x%x",
 			server->credits,
-- 
2.34.1