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Message-Id: <20170528003411.17603-2-jakub.kicinski@netronome.com>
Date: Sat, 27 May 2017 17:34:00 -0700
From: Jakub Kicinski <jakub.kicinski@...ronome.com>
To: netdev@...r.kernel.org
Cc: oss-drivers@...ronome.com,
Pablo Cascón <pablo.cascon@...ronome.com>
Subject: [PATCH net-next 01/12] nfp: add set_mac_address support while the interface is up
From: Pablo Cascón <pablo.cascon@...ronome.com>
Expose FW app ability to change MAC address at runtime. Make sure
we only depend on it if FW app advertised the right capability.
Signed-off-by: Pablo Cascón <pablo.cascon@...ronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@...ronome.com>
---
.../net/ethernet/netronome/nfp/nfp_net_common.c | 44 +++++++++++++++++-----
drivers/net/ethernet/netronome/nfp/nfp_net_ctrl.h | 2 +
2 files changed, 36 insertions(+), 10 deletions(-)
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
index b3f5c8af6789..9312a737fbc9 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
@@ -2123,17 +2123,16 @@ void nfp_net_coalesce_write_cfg(struct nfp_net *nn)
/**
* nfp_net_write_mac_addr() - Write mac address to the device control BAR
* @nn: NFP Net device to reconfigure
+ * @addr: MAC address to write
*
* Writes the MAC address from the netdev to the device control BAR. Does not
* perform the required reconfig. We do a bit of byte swapping dance because
* firmware is LE.
*/
-static void nfp_net_write_mac_addr(struct nfp_net *nn)
+static void nfp_net_write_mac_addr(struct nfp_net *nn, const u8 *addr)
{
- nn_writel(nn, NFP_NET_CFG_MACADDR + 0,
- get_unaligned_be32(nn->dp.netdev->dev_addr));
- nn_writew(nn, NFP_NET_CFG_MACADDR + 6,
- get_unaligned_be16(nn->dp.netdev->dev_addr + 4));
+ nn_writel(nn, NFP_NET_CFG_MACADDR + 0, get_unaligned_be32(addr));
+ nn_writew(nn, NFP_NET_CFG_MACADDR + 6, get_unaligned_be16(addr + 4));
}
static void nfp_net_vec_clear_ring_data(struct nfp_net *nn, unsigned int idx)
@@ -2238,7 +2237,7 @@ static int nfp_net_set_config_and_enable(struct nfp_net *nn)
nn_writeq(nn, NFP_NET_CFG_RXRS_ENABLE, nn->dp.num_rx_rings == 64 ?
0xffffffffffffffffULL : ((u64)1 << nn->dp.num_rx_rings) - 1);
- nfp_net_write_mac_addr(nn);
+ nfp_net_write_mac_addr(nn, nn->dp.netdev->dev_addr);
nn_writel(nn, NFP_NET_CFG_MTU, nn->dp.netdev->mtu);
@@ -2997,6 +2996,27 @@ static int nfp_net_xdp(struct net_device *netdev, struct netdev_xdp *xdp)
}
}
+static int nfp_net_set_mac_address(struct net_device *netdev, void *addr)
+{
+ struct nfp_net *nn = netdev_priv(netdev);
+ struct sockaddr *saddr = addr;
+ int err;
+
+ err = eth_prepare_mac_addr_change(netdev, addr);
+ if (err)
+ return err;
+
+ nfp_net_write_mac_addr(nn, saddr->sa_data);
+
+ err = nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_MACADDR);
+ if (err)
+ return err;
+
+ eth_commit_mac_addr_change(netdev, addr);
+
+ return 0;
+}
+
const struct net_device_ops nfp_net_netdev_ops = {
.ndo_open = nfp_net_netdev_open,
.ndo_stop = nfp_net_netdev_close,
@@ -3006,7 +3026,7 @@ const struct net_device_ops nfp_net_netdev_ops = {
.ndo_tx_timeout = nfp_net_tx_timeout,
.ndo_set_rx_mode = nfp_net_set_rx_mode,
.ndo_change_mtu = nfp_net_change_mtu,
- .ndo_set_mac_address = eth_mac_addr,
+ .ndo_set_mac_address = nfp_net_set_mac_address,
.ndo_set_features = nfp_net_set_features,
.ndo_features_check = nfp_net_features_check,
.ndo_get_phys_port_name = nfp_port_get_phys_port_name,
@@ -3029,7 +3049,7 @@ void nfp_net_info(struct nfp_net *nn)
nn->fw_ver.resv, nn->fw_ver.class,
nn->fw_ver.major, nn->fw_ver.minor,
nn->max_mtu);
- nn_info(nn, "CAP: %#x %s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
+ nn_info(nn, "CAP: %#x %s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
nn->cap,
nn->cap & NFP_NET_CFG_CTRL_PROMISC ? "PROMISC " : "",
nn->cap & NFP_NET_CFG_CTRL_L2BC ? "L2BCFILT " : "",
@@ -3051,7 +3071,8 @@ void nfp_net_info(struct nfp_net *nn)
nn->cap & NFP_NET_CFG_CTRL_NVGRE ? "NVGRE " : "",
nfp_net_ebpf_capable(nn) ? "BPF " : "",
nn->cap & NFP_NET_CFG_CTRL_CSUM_COMPLETE ?
- "RXCSUM_COMPLETE " : "");
+ "RXCSUM_COMPLETE " : "",
+ nn->cap & NFP_NET_CFG_CTRL_LIVE_ADDR ? "LIVE_ADDR " : "");
}
/**
@@ -3211,7 +3232,7 @@ int nfp_net_init(struct nfp_net *nn)
if (nn->dp.chained_metadata_format && nn->fw_ver.major != 4)
nn->cap &= ~NFP_NET_CFG_CTRL_RSS;
- nfp_net_write_mac_addr(nn);
+ nfp_net_write_mac_addr(nn, nn->dp.netdev->dev_addr);
/* Determine RX packet/metadata boundary offset */
if (nn->fw_ver.major >= 2) {
@@ -3241,6 +3262,9 @@ int nfp_net_init(struct nfp_net *nn)
* and netdev->hw_features advertises which features are
* supported. By default we enable most features.
*/
+ if (nn->cap & NFP_NET_CFG_CTRL_LIVE_ADDR)
+ netdev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
+
netdev->hw_features = NETIF_F_HIGHDMA;
if (nn->cap & NFP_NET_CFG_CTRL_RXCSUM_ANY) {
netdev->hw_features |= NETIF_F_RXCSUM;
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_ctrl.h b/drivers/net/ethernet/netronome/nfp/nfp_net_ctrl.h
index df75b8dc3617..c8208bf370e0 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_net_ctrl.h
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net_ctrl.h
@@ -135,6 +135,7 @@
#define NFP_NET_CFG_CTRL_LSO2 (0x1 << 28) /* LSO/TSO (version 2) */
#define NFP_NET_CFG_CTRL_RSS2 (0x1 << 29) /* RSS (version 2) */
#define NFP_NET_CFG_CTRL_CSUM_COMPLETE (0x1 << 30) /* Checksum complete */
+#define NFP_NET_CFG_CTRL_LIVE_ADDR (0x1 << 31) /* live MAC addr change */
#define NFP_NET_CFG_CTRL_LSO_ANY (NFP_NET_CFG_CTRL_LSO | \
NFP_NET_CFG_CTRL_LSO2)
@@ -157,6 +158,7 @@
#define NFP_NET_CFG_UPDATE_IRQMOD (0x1 << 8) /* IRQ mod change */
#define NFP_NET_CFG_UPDATE_VXLAN (0x1 << 9) /* VXLAN port change */
#define NFP_NET_CFG_UPDATE_BPF (0x1 << 10) /* BPF program load */
+#define NFP_NET_CFG_UPDATE_MACADDR (0x1 << 11) /* MAC address change */
#define NFP_NET_CFG_UPDATE_ERR (0x1 << 31) /* A error occurred */
#define NFP_NET_CFG_TXRS_ENABLE 0x0008
#define NFP_NET_CFG_RXRS_ENABLE 0x0010
--
2.11.0
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