be2net: fix definition of be_max_eqs()

Orabug: 25570957

The EQs available on a function are shared between NIC and RoCE.
The be_max_eqs() macro was so far being used to refer to the max number of
EQs available for NIC. This has caused some confusion in the code. To fix
this confusion this patch introduces a new macro called be_max_nic_eqs()
to refer to the max number of EQs avialable for NIC only and renames
be_max_eqs() to be_max_func_eqs().

Signed-off-by: Sathya Perla <sathya.perla@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit ce7faf0a071b6d05f55d8b7b36fd796cab527427)
Signed-off-by: Brian Maly <brian.maly@oracle.com>
Signed-off-by: Dhaval Giani <dhaval.giani@oracle.com>

diff --git a/drivers/net/ethernet/emulex/benet/be.h b/drivers/net/ethernet/emulex/benet/be.h
index c2174ad1d4bc8709dd3b1e6295f3ea147c85ee93..479e0dc61455d574b253b4585713b9b1ae713d3a 100644 (file)
--- a/drivers/net/ethernet/emulex/benet/be.h
+++ b/drivers/net/ethernet/emulex/benet/be.h
@@ -443,6 +443,7 @@ struct be_resources {
        u16 max_iface_count;
        u16 max_mcc_count;
        u16 max_evt_qs;
+       u16 max_nic_evt_qs;     /* NIC's share of evt qs */
        u32 if_cap_flags;
        u32 vf_if_cap_flags;    /* VF if capability flags */
        u32 flags;
@@ -644,7 +645,10 @@ struct be_adapter {
 #define be_max_txqs(adapter)           (adapter->res.max_tx_qs)
 #define be_max_prio_txqs(adapter)      (adapter->res.max_prio_tx_qs)
 #define be_max_rxqs(adapter)           (adapter->res.max_rx_qs)
-#define be_max_eqs(adapter)            (adapter->res.max_evt_qs)
+/* Max number of EQs available for the function (NIC + RoCE (if enabled)) */
+#define be_max_func_eqs(adapter)       (adapter->res.max_evt_qs)
+/* Max number of EQs available avaialble only for NIC */
+#define be_max_nic_eqs(adapter)                (adapter->res.max_nic_evt_qs)
 #define be_if_cap_flags(adapter)       (adapter->res.if_cap_flags)
 #define be_max_pf_pool_rss_tables(adapter)     \
                                (adapter->pool_res.max_rss_tables)
@@ -654,7 +658,7 @@ static inline u16 be_max_qs(struct be_adapter *adapter)
        /* If no RSS, need atleast the one def RXQ */
        u16 num = max_t(u16, be_max_rss(adapter), 1);
 
-       num = min(num, be_max_eqs(adapter));
+       num = min(num, be_max_nic_eqs(adapter));
        return min_t(u16, num, num_online_cpus());
 }
 

diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c
index 3585bc2a1ee2e12282e28bf66959718bce4aedd1..1dd515c8ae6d84d4b2bd39d00b94ec7012001bda 100644 (file)
--- a/drivers/net/ethernet/emulex/benet/be_main.c
+++ b/drivers/net/ethernet/emulex/benet/be_main.c
@@ -3252,12 +3252,12 @@ static int be_msix_enable(struct be_adapter *adapter)
        int i, num_vec;
        struct device *dev = &adapter->pdev->dev;
 
-       /* If RoCE is supported, program the max number of NIC vectors that
-        * may be configured via set-channels, along with vectors needed for
-        * RoCe. Else, just program the number we'll use initially.
+       /* If RoCE is supported, program the max number of vectors that
+        * could be used for NIC and RoCE, else, just program the number
+        * we'll use initially.
         */
        if (be_roce_supported(adapter))
-               num_vec = min_t(int, 2 * be_max_eqs(adapter),
+               num_vec = min_t(int, be_max_func_eqs(adapter),
                                2 * num_online_cpus());
        else
                num_vec = adapter->cfg_num_qs;
@@ -4229,16 +4229,13 @@ static int be_get_resources(struct be_adapter *adapter)
        struct be_resources res = {0};
        int status;
 
-       if (BEx_chip(adapter)) {
-               BEx_get_resources(adapter, &res);
-               adapter->res = res;
-       }
-
        /* For Lancer, SH etc read per-function resource limits from FW.
         * GET_FUNC_CONFIG returns per function guaranteed limits.
         * GET_PROFILE_CONFIG returns PCI-E related limits PF-pool limits
         */
-       if (!BEx_chip(adapter)) {
+       if (BEx_chip(adapter)) {
+               BEx_get_resources(adapter, &res);
+       } else {
                status = be_cmd_get_func_config(adapter, &res);
                if (status)
                        return status;
@@ -4247,13 +4244,13 @@ static int be_get_resources(struct be_adapter *adapter)
                if (res.max_rss_qs && res.max_rss_qs == res.max_rx_qs &&
                    !(res.if_cap_flags & BE_IF_FLAGS_DEFQ_RSS))
                        res.max_rss_qs -= 1;
-
-               /* If RoCE may be enabled stash away half the EQs for RoCE */
-               if (be_roce_supported(adapter))
-                       res.max_evt_qs /= 2;
-               adapter->res = res;
        }
 
+       /* If RoCE is supported stash away half the EQs for RoCE */
+       res.max_nic_evt_qs = be_roce_supported(adapter) ?
+                               res.max_evt_qs / 2 : res.max_evt_qs;
+       adapter->res = res;
+
        /* If FW supports RSS default queue, then skip creating non-RSS
         * queue for non-IP traffic.
         */
@@ -4262,7 +4259,7 @@ static int be_get_resources(struct be_adapter *adapter)
 
        dev_info(dev, "Max: txqs %d, rxqs %d, rss %d, eqs %d, vfs %d\n",
                 be_max_txqs(adapter), be_max_rxqs(adapter),
-                be_max_rss(adapter), be_max_eqs(adapter),
+                be_max_rss(adapter), be_max_nic_eqs(adapter),
                 be_max_vfs(adapter));
        dev_info(dev, "Max: uc-macs %d, mc-macs %d, vlans %d\n",
                 be_max_uc(adapter), be_max_mc(adapter),