nfp: split reading capabilities out of nfp_net_init()

nfp_net_init() is a little long and we are about to add more
code to reading capabilties.  Move the capability reading,
parsing and validating out.  Only actual initialization
will stay in nfp_net_init().

No functional changes.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
index 15c2fec4f520652d8f5fcfe1a38b597d41d41bb0..86a88770181d1fb50e06bec5724f1f9e18612918 100644 (file)
--- a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
@@ -3756,18 +3756,8 @@ static void nfp_net_netdev_init(struct nfp_net *nn)
        nfp_net_set_ethtool_ops(netdev);
 }
 
-/**
- * nfp_net_init() - Initialise/finalise the nfp_net structure
- * @nn:                NFP Net device structure
- *
- * Return: 0 on success or negative errno on error.
- */
-int nfp_net_init(struct nfp_net *nn)
+static int nfp_net_read_caps(struct nfp_net *nn)
 {
-       int err;
-
-       nn->dp.rx_dma_dir = DMA_FROM_DEVICE;
-
        /* Get some of the read-only fields from the BAR */
        nn->cap = nn_readl(nn, NFP_NET_CFG_CAP);
        nn->max_mtu = nn_readl(nn, NFP_NET_CFG_MAX_MTU);
@@ -3800,6 +3790,25 @@ int nfp_net_init(struct nfp_net *nn)
                nn->dp.rx_offset = NFP_NET_RX_OFFSET;
        }
 
+       return 0;
+}
+
+/**
+ * nfp_net_init() - Initialise/finalise the nfp_net structure
+ * @nn:                NFP Net device structure
+ *
+ * Return: 0 on success or negative errno on error.
+ */
+int nfp_net_init(struct nfp_net *nn)
+{
+       int err;
+
+       nn->dp.rx_dma_dir = DMA_FROM_DEVICE;
+
+       err = nfp_net_read_caps(nn);
+       if (err)
+               return err;
+
        /* Set default MTU and Freelist buffer size */
        if (nn->max_mtu < NFP_NET_DEFAULT_MTU)
                nn->dp.mtu = nn->max_mtu;