staging/lustre/lnet: portal spreading rotor should be unsigned

Portal spreading rotor should be unsigned, otherwise lnet may get
negative CPT number and access invalid addresses.

Signed-off-by: Liang Zhen <liang.zhen@intel.com>
Reviewed-on: http://review.whamcloud.com/11936
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5639
Reviewed-by: Amir Shehata <amir.shehata@intel.com>
Reviewed-by: Isaac Huang <he.huang@intel.com>
Reviewed-by: Doug Oucharek <doug.s.oucharek@intel.com>
Signed-off-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/lustre/include/linux/lnet/lib-types.h b/drivers/staging/lustre/include/linux/lnet/lib-types.h
index ba1876f..5053766 100644 (file)
--- a/drivers/staging/lustre/include/linux/lnet/lib-types.h
+++ b/drivers/staging/lustre/include/linux/lnet/lib-types.h
@@ -622,7 +622,7 @@ typedef struct lnet_portal {
        /* Match table for each CPT */
        struct lnet_match_table **ptl_mtables;
        /* spread rotor of incoming "PUT" */
-       int                     ptl_rotor;
+       unsigned int            ptl_rotor;
        /* # active entries for this portal */
        int                  ptl_mt_nmaps;
        /* array of active entries' cpu-partition-id */

diff --git a/drivers/staging/lustre/lnet/lnet/lib-ptl.c b/drivers/staging/lustre/lnet/lnet/lib-ptl.c
index 19ed696..3ba0da9 100644 (file)
--- a/drivers/staging/lustre/lnet/lnet/lib-ptl.c
+++ b/drivers/staging/lustre/lnet/lnet/lib-ptl.c
@@ -262,10 +262,10 @@ lnet_mt_of_match(struct lnet_match_info *info, struct lnet_msg *msg)
 {
        struct lnet_match_table *mtable;
        struct lnet_portal      *ptl;
-       int                     nmaps;
-       int                     rotor;
-       int                     routed;
-       int                     cpt;
+       unsigned int            nmaps;
+       unsigned int            rotor;
+       unsigned int            cpt;
+       bool                    routed;
 
        /* NB: called w/o lock */
        LASSERT(info->mi_portal < the_lnet.ln_nportals);