bnx2x: Fix ETS bandwidth

ETS bandwidth of 0% is not allowed by driver, so provide alternative HW configuration for this case.

Signed-off-by: Yaniv Rosner <yanivr@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/bnx2x/bnx2x_link.c b/drivers/net/bnx2x/bnx2x_link.c
index d45b155..9d381db 100644 (file)
--- a/drivers/net/bnx2x/bnx2x_link.c
+++ b/drivers/net/bnx2x/bnx2x_link.c
@@ -778,9 +778,9 @@ static int bnx2x_ets_e3b0_set_cos_bw(struct bnx2x *bp,
 {
        u32 nig_reg_adress_crd_weight = 0;
        u32 pbf_reg_adress_crd_weight = 0;
-       /* Calculate and set BW for this COS*/
-       const u32 cos_bw_nig = (bw * min_w_val_nig) / total_bw;
-       const u32 cos_bw_pbf = (bw * min_w_val_pbf) / total_bw;
+       /* Calculate and set BW for this COS - use 1 instead of 0 for BW */
+       const u32 cos_bw_nig = ((bw ? bw : 1) * min_w_val_nig) / total_bw;
+       const u32 cos_bw_pbf = ((bw ? bw : 1) * min_w_val_pbf) / total_bw;
 
        switch (cos_entry) {
        case 0:
@@ -852,18 +852,12 @@ static int bnx2x_ets_e3b0_get_total_bw(
        /* Calculate total BW requested */
        for (cos_idx = 0; cos_idx < ets_params->num_of_cos; cos_idx++) {
                if (bnx2x_cos_state_bw == ets_params->cos[cos_idx].state) {
-
-                       if (0 == ets_params->cos[cos_idx].params.bw_params.bw) {
-                               DP(NETIF_MSG_LINK, "bnx2x_ets_E3B0_config BW"
-                                                  "was set to 0\n");
-                       return -EINVAL;
+                       *total_bw +=
+                               ets_params->cos[cos_idx].params.bw_params.bw;
                }
-               *total_bw +=
-                   ets_params->cos[cos_idx].params.bw_params.bw;
-           }
        }
 
-       /*Check taotl BW is valid */
+       /* Check total BW is valid */
        if ((100 != *total_bw) || (0 == *total_bw)) {
                if (0 == *total_bw) {
                        DP(NETIF_MSG_LINK, "bnx2x_ets_E3B0_config toatl BW"