sfc: Add NIC type operations to replace direct calls from efx.c into siena_sriov.c

Also add dummy functions where required to avoid NULL pointer dereference.

Signed-off-by: Shradha Shah <sshah@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 files changed, 56 insertions, 8 deletions

diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c
index 002d4cdc319f..ff55a1983014 100644
--- a/drivers/net/ethernet/sfc/ef10.c
+++ b/drivers/net/ethernet/sfc/ef10.c
@@ -3688,6 +3688,11 @@ const struct efx_nic_type efx_hunt_a0_nic_type = {
         .ptp_write_host_time = efx_ef10_ptp_write_host_time,
         .ptp_set_ts_sync_events = efx_ef10_ptp_set_ts_sync_events,
         .ptp_set_ts_config = efx_ef10_ptp_set_ts_config,
+        .sriov_init = efx_ef10_sriov_init,
+        .sriov_fini = efx_ef10_sriov_fini,
+        .sriov_mac_address_changed = efx_ef10_sriov_mac_address_changed,
+        .sriov_wanted = efx_ef10_sriov_wanted,
+        .sriov_reset = efx_ef10_sriov_reset,
 
         .revision = EFX_REV_HUNT_A0,
         .max_dma_mask = DMA_BIT_MASK(ESF_DZ_TX_KER_BUF_ADDR_WIDTH),
diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c
index 2236ffc6de32..b49d04886d4f 100644
--- a/drivers/net/ethernet/sfc/efx.c
+++ b/drivers/net/ethernet/sfc/efx.c
@@ -1314,7 +1314,7 @@ static unsigned int efx_wanted_parallelism(struct efx_nic *efx)
         /* If RSS is requested for the PF *and* VFs then we can't write RSS
          * table entries that are inaccessible to VFs
          */
-        if (efx_siena_sriov_wanted(efx) && efx_vf_size(efx) > 1 &&
+        if (efx->type->sriov_wanted(efx) && efx_vf_size(efx) > 1 &&
             count > efx_vf_size(efx)) {
                 netif_warn(efx, probe, efx->net_dev,
                            "Reducing number of RSS channels from %u to %u for "
@@ -1426,8 +1426,9 @@ static int efx_probe_interrupts(struct efx_nic *efx)
         }
 
         /* RSS might be usable on VFs even if it is disabled on the PF */
+
         efx->rss_spread = ((efx->n_rx_channels > 1 ||
-                            !efx_siena_sriov_wanted(efx)) ?
+                            !efx->type->sriov_wanted(efx)) ?
                            efx->n_rx_channels : efx_vf_size(efx));
 
         return 0;
@@ -2167,7 +2168,7 @@ static int efx_set_mac_address(struct net_device *net_dev, void *data)
         }
 
         ether_addr_copy(net_dev->dev_addr, new_addr);
-        efx_siena_sriov_mac_address_changed(efx);
+        efx->type->sriov_mac_address_changed(efx);
 
         /* Reconfigure the MAC */
         mutex_lock(&efx->mac_lock);
@@ -2434,7 +2435,7 @@ int efx_reset_up(struct efx_nic *efx, enum reset_type method, bool ok)
         if (rc)
                 goto fail;
         efx_restore_filters(efx);
-        efx_siena_sriov_reset(efx);
+        efx->type->sriov_reset(efx);
 
         mutex_unlock(&efx->mac_lock);
 
@@ -2827,7 +2828,7 @@ static void efx_pci_remove(struct pci_dev *pci_dev)
         efx_disable_interrupts(efx);
         rtnl_unlock();
 
-        efx_siena_sriov_fini(efx);
+        efx->type->sriov_fini(efx);
         efx_unregister_netdev(efx);
 
         efx_mtd_remove(efx);
@@ -3024,7 +3025,7 @@ static int efx_pci_probe(struct pci_dev *pci_dev,
         if (rc)
                 goto fail4;
 
-        rc = efx_siena_sriov_init(efx);
+        rc = efx->type->sriov_init(efx);
         if (rc)
                 netif_err(efx, probe, efx->net_dev,
                           "SR-IOV can't be enabled rc %d\n", rc);
diff --git a/drivers/net/ethernet/sfc/falcon.c b/drivers/net/ethernet/sfc/falcon.c
index 157037546d30..f166c8ef38a3 100644
--- a/drivers/net/ethernet/sfc/falcon.c
+++ b/drivers/net/ethernet/sfc/falcon.c
@@ -2766,6 +2766,11 @@ const struct efx_nic_type falcon_a1_nic_type = {
         .mtd_write = falcon_mtd_write,
         .mtd_sync = falcon_mtd_sync,
 #endif
+        .sriov_init = efx_falcon_sriov_init,
+        .sriov_fini = efx_falcon_sriov_fini,
+        .sriov_mac_address_changed = efx_falcon_sriov_mac_address_changed,
+        .sriov_wanted = efx_falcon_sriov_wanted,
+        .sriov_reset = efx_falcon_sriov_reset,
 
         .revision = EFX_REV_FALCON_A1,
         .txd_ptr_tbl_base = FR_AA_TX_DESC_PTR_TBL_KER,
@@ -2862,6 +2867,11 @@ const struct efx_nic_type falcon_b0_nic_type = {
         .mtd_write = falcon_mtd_write,
         .mtd_sync = falcon_mtd_sync,
 #endif
+        .sriov_init = efx_falcon_sriov_init,
+        .sriov_fini = efx_falcon_sriov_fini,
+        .sriov_mac_address_changed = efx_falcon_sriov_mac_address_changed,
+        .sriov_wanted = efx_falcon_sriov_wanted,
+        .sriov_reset = efx_falcon_sriov_reset,
 
         .revision = EFX_REV_FALCON_B0,
         .txd_ptr_tbl_base = FR_BZ_TX_DESC_PTR_TBL,
diff --git a/drivers/net/ethernet/sfc/farch.c b/drivers/net/ethernet/sfc/farch.c
index f5549a94e0c3..75975328e020 100644
--- a/drivers/net/ethernet/sfc/farch.c
+++ b/drivers/net/ethernet/sfc/farch.c
@@ -1685,7 +1685,7 @@ void efx_farch_dimension_resources(struct efx_nic *efx, unsigned sram_lim_qw)
         vi_count = max(efx->n_channels, efx->n_tx_channels * EFX_TXQ_TYPES);
 
 #ifdef CONFIG_SFC_SRIOV
-        if (efx_siena_sriov_wanted(efx)) {
+        if (efx->type->sriov_wanted(efx)) {
                 unsigned vi_dc_entries, buftbl_free, entries_per_vf, vf_limit;
 
                 nic_data->vf_buftbl_base = buftbl_min;
diff --git a/drivers/net/ethernet/sfc/net_driver.h b/drivers/net/ethernet/sfc/net_driver.h
index 779a1f59a010..325dd94bca46 100644
--- a/drivers/net/ethernet/sfc/net_driver.h
+++ b/drivers/net/ethernet/sfc/net_driver.h
@@ -1330,6 +1330,11 @@ struct efx_nic_type {
         int (*ptp_set_ts_sync_events)(struct efx_nic *efx, bool en, bool temp);
         int (*ptp_set_ts_config)(struct efx_nic *efx,
                                  struct hwtstamp_config *init);
+        int (*sriov_init)(struct efx_nic *efx);
+        void (*sriov_fini)(struct efx_nic *efx);
+        void (*sriov_mac_address_changed)(struct efx_nic *efx);
+        bool (*sriov_wanted)(struct efx_nic *efx);
+        void (*sriov_reset)(struct efx_nic *efx);
 
         int revision;
         unsigned int txd_ptr_tbl_base;
diff --git a/drivers/net/ethernet/sfc/nic.h b/drivers/net/ethernet/sfc/nic.h
index 1ab3eda9a690..93d10cbbd1cf 100644
--- a/drivers/net/ethernet/sfc/nic.h
+++ b/drivers/net/ethernet/sfc/nic.h
@@ -540,6 +540,7 @@ struct efx_ef10_nic_data {
 
 #ifdef CONFIG_SFC_SRIOV
 
+/* SIENA */
 static inline bool efx_siena_sriov_wanted(struct efx_nic *efx)
 {
         return efx->vf_count != 0;
@@ -568,12 +569,19 @@ void efx_siena_sriov_reset(struct efx_nic *efx);
 void efx_siena_sriov_fini(struct efx_nic *efx);
 void efx_fini_sriov(void);
 
+/* EF10 */
+static inline bool efx_ef10_sriov_wanted(struct efx_nic *efx) { return false; }
+static inline int efx_ef10_sriov_init(struct efx_nic *efx) { return -EOPNOTSUPP; }
+static inline void efx_ef10_sriov_mac_address_changed(struct efx_nic *efx) {}
+static inline void efx_ef10_sriov_reset(struct efx_nic *efx) {}
+static inline void efx_ef10_sriov_fini(struct efx_nic *efx) {}
+
 #else
 
+/* SIENA */
 static inline bool efx_siena_sriov_wanted(struct efx_nic *efx) { return false; }
 static inline bool efx_siena_sriov_enabled(struct efx_nic *efx) { return false; }
 static inline unsigned int efx_vf_size(struct efx_nic *efx) { return 0; }
-
 static inline int efx_init_sriov(void) { return 0; }
 static inline void efx_siena_sriov_probe(struct efx_nic *efx) {}
 static inline int efx_siena_sriov_init(struct efx_nic *efx) { return -EOPNOTSUPP; }
@@ -591,8 +599,22 @@ static inline void efx_siena_sriov_reset(struct efx_nic *efx) {}
 static inline void efx_siena_sriov_fini(struct efx_nic *efx) {}
 static inline void efx_fini_sriov(void) {}
 
+/* EF10 */
+static inline bool efx_ef10_sriov_wanted(struct efx_nic *efx) { return false; }
+static inline int efx_ef10_sriov_init(struct efx_nic *efx) { return -EOPNOTSUPP; }
+static inline void efx_ef10_sriov_mac_address_changed(struct efx_nic *efx) {}
+static inline void efx_ef10_sriov_reset(struct efx_nic *efx) {}
+static inline void efx_ef10_sriov_fini(struct efx_nic *efx) {}
+
 #endif
 
+/* FALCON */
+static inline bool efx_falcon_sriov_wanted(struct efx_nic *efx) { return false; }
+static inline int efx_falcon_sriov_init(struct efx_nic *efx) { return -EOPNOTSUPP; }
+static inline void efx_falcon_sriov_mac_address_changed(struct efx_nic *efx) {}
+static inline void efx_falcon_sriov_reset(struct efx_nic *efx) {}
+static inline void efx_falcon_sriov_fini(struct efx_nic *efx) {}
+
 int efx_siena_sriov_set_vf_mac(struct net_device *dev, int vf, u8 *mac);
 int efx_siena_sriov_set_vf_vlan(struct net_device *dev, int vf,
                                 u16 vlan, u8 qos);
diff --git a/drivers/net/ethernet/sfc/siena.c b/drivers/net/ethernet/sfc/siena.c
index cf40d602230e..3583f0208a6e 100644
--- a/drivers/net/ethernet/sfc/siena.c
+++ b/drivers/net/ethernet/sfc/siena.c
@@ -997,6 +997,11 @@ const struct efx_nic_type siena_a0_nic_type = {
 #endif
         .ptp_write_host_time = siena_ptp_write_host_time,
         .ptp_set_ts_config = siena_ptp_set_ts_config,
+        .sriov_init = efx_siena_sriov_init,
+        .sriov_fini = efx_siena_sriov_fini,
+        .sriov_mac_address_changed = efx_siena_sriov_mac_address_changed,
+        .sriov_wanted = efx_siena_sriov_wanted,
+        .sriov_reset = efx_siena_sriov_reset,
 
         .revision = EFX_REV_SIENA_A0,
         .txd_ptr_tbl_base = FR_BZ_TX_DESC_PTR_TBL,