[CIFS] Fix rsize calculation so that large readx flag is checked.

Signed-off-by: Steve French (sfrench@us.ibm.com)

1 files changed, 24 insertions, 5 deletions

diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 31eb9a3bf627..d1c6acee620e 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -30,6 +30,7 @@
 #include <linux/mempool.h>
 #include <linux/delay.h>
 #include <linux/completion.h>
+#include <linux/pagevec.h>
 #include <asm/uaccess.h>
 #include <asm/processor.h>
 #include "cifspdu.h"
@@ -188,6 +189,7 @@ cifs_reconnect(struct TCP_Server_Info *server)
                                         server->server_RFC1001_name);
                 }
                 if(rc) {
+                        cERROR(1,("reconnect error %d",rc));
                         msleep(3000);
                 } else {
                         atomic_inc(&tcpSesReconnectCount);
@@ -469,6 +471,7 @@ cifs_demultiplex_thread(struct TCP_Server_Info *server)
                         } else {
                                 /* give server a second to
                                 clean up before reconnect attempt */
+                                cERROR(1,("sleep before reconnect"));
                                 msleep(1000);
                                 /* always try 445 first on reconnect
                                 since we get NACK on some if we ever
@@ -556,6 +559,7 @@ cifs_demultiplex_thread(struct TCP_Server_Info *server)
                 dump_smb(smb_buffer, length);
                 if (checkSMB (smb_buffer, smb_buffer->Mid, total_read+4)) {
                         cERROR(1, ("Bad SMB Received "));
+                        cifs_dump_mem("smb: ", smb_buffer, 48);
                         continue;
                 }
 
@@ -1383,7 +1387,9 @@ ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket,
                 the default. sock_setsockopt not used because it expects 
                 user space buffer */
         (*csocket)->sk->sk_rcvtimeo = 7 * HZ;
-
+         cERROR(1,("sndbuf %d rcvbuf %d reset to 200K each",(*csocket)->sk->sk_sndbuf, (*csocket)->sk->sk_rcvbuf));
+        (*csocket)->sk->sk_sndbuf = 300 * 1024;
+        (*csocket)->sk->sk_rcvbuf = 200 * 1024;
         /* send RFC1001 sessinit */
 
         if(psin_server->sin_port == htons(RFC1001_PORT)) {
@@ -1736,11 +1742,20 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
     
         /* search for existing tcon to this server share */
         if (!rc) {
-                if((volume_info.rsize) && (volume_info.rsize <= CIFSMaxBufSize))
+                if(volume_info.rsize > CIFSMaxBufSize) {
+                        cERROR(1,("rsize %d too large, using MaxBufSize",
+                                volume_info.rsize));
+                        cifs_sb->rsize = CIFSMaxBufSize;
+                } else if((volume_info.rsize) && (volume_info.rsize <= CIFSMaxBufSize))
                         cifs_sb->rsize = volume_info.rsize;
-                else
-                        cifs_sb->rsize = srvTcp->maxBuf - MAX_CIFS_HDR_SIZE; /* default */
-                if(volume_info.wsize)
+                else /* default */
+                        cifs_sb->rsize = CIFSMaxBufSize;
+
+                if(volume_info.wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) {
+                        cERROR(1,("wsize %d too large using 4096 instead",
+                                  volume_info.wsize));
+                        cifs_sb->wsize = 4096;
+                } else if(volume_info.wsize)
                         cifs_sb->wsize = volume_info.wsize;
                 else
                         cifs_sb->wsize = CIFSMaxBufSize; /* default */
@@ -1895,6 +1910,10 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
                         cifs_sb->wsize = min(cifs_sb->wsize,
                                              (tcon->ses->server->maxBuf -
                                               MAX_CIFS_HDR_SIZE));
+                if (!(tcon->ses->capabilities & CAP_LARGE_READ_X))
+                        cifs_sb->rsize = min(cifs_sb->rsize,
+                                             (tcon->ses->server->maxBuf -
+                                              MAX_CIFS_HDR_SIZE));
         }
 
         /* volume_info.password is freed above when existing session found