net/qede/base: adjust queue manager idx greater than max

Modified queue manager getter APIs to cycle through their range if
index is higher than max. This prevents accessing index out of bounds.

Signed-off-by: Rasesh Mody <rasesh.mody@cavium.com>

diff --git a/drivers/net/qede/base/ecore_dev.c b/drivers/net/qede/base/ecore_dev.c
index da312b4..f0adf18 100644 (file)
--- a/drivers/net/qede/base/ecore_dev.c
+++ b/drivers/net/qede/base/ecore_dev.c
@@ -569,12 +569,11 @@ u16 ecore_init_qm_get_num_pf_rls(struct ecore_hwfn *p_hwfn)
 {
        u16 num_pf_rls, num_vfs = ecore_init_qm_get_num_vfs(p_hwfn);
 
-       /* @DPDK */
        /* num RLs can't exceed resource amount of rls or vports or the
         * dcqcn qps
         */
        num_pf_rls = (u16)OSAL_MIN_T(u32, RESC_NUM(p_hwfn, ECORE_RL),
-                                    (u16)RESC_NUM(p_hwfn, ECORE_VPORT));
+                                    RESC_NUM(p_hwfn, ECORE_VPORT));
 
        /* make sure after we reserve the default and VF rls we'll have
         * something left
@@ -835,7 +834,7 @@ u16 ecore_get_cm_pq_idx_mcos(struct ecore_hwfn *p_hwfn, u8 tc)
        if (tc > max_tc)
                DP_ERR(p_hwfn, "tc %d must be smaller than %d\n", tc, max_tc);
 
-       return ecore_get_cm_pq_idx(p_hwfn, PQ_FLAGS_MCOS) + tc;
+       return ecore_get_cm_pq_idx(p_hwfn, PQ_FLAGS_MCOS) + (tc % max_tc);
 }
 
 u16 ecore_get_cm_pq_idx_vf(struct ecore_hwfn *p_hwfn, u16 vf)
@@ -845,17 +844,17 @@ u16 ecore_get_cm_pq_idx_vf(struct ecore_hwfn *p_hwfn, u16 vf)
        if (vf > max_vf)
                DP_ERR(p_hwfn, "vf %d must be smaller than %d\n", vf, max_vf);
 
-       return ecore_get_cm_pq_idx(p_hwfn, PQ_FLAGS_VFS) + vf;
+       return ecore_get_cm_pq_idx(p_hwfn, PQ_FLAGS_VFS) + (vf % max_vf);
 }
 
 u16 ecore_get_cm_pq_idx_rl(struct ecore_hwfn *p_hwfn, u16 rl)
 {
        u16 max_rl = ecore_init_qm_get_num_pf_rls(p_hwfn);
 
-       if (rl > max_rl)
-               DP_ERR(p_hwfn, "rl %d must be smaller than %d\n", rl, max_rl);
-
-       return ecore_get_cm_pq_idx(p_hwfn, PQ_FLAGS_RLS) + rl;
+       /* for rate limiters, it is okay to use the modulo behavior - no
+        * DP_ERR
+        */
+       return ecore_get_cm_pq_idx(p_hwfn, PQ_FLAGS_RLS) + (rl % max_rl);
 }
 
 u16 ecore_get_qm_vport_idx_rl(struct ecore_hwfn *p_hwfn, u16 rl)