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Message-Id: <1470929784-3882-3-git-send-email-hariprasad@chelsio.com>
Date: Thu, 11 Aug 2016 21:06:24 +0530
From: Hariprasad Shenai <hariprasad@...lsio.com>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, leedom@...lsio.com, nirranjan@...lsio.com,
Hariprasad Shenai <hariprasad@...lsio.com>
Subject: [PATCHv5 net-next 2/2] cxgb4/cxgb4vf: Add set VF mac address support
Add ndo_set_vf_mac support which allows to set the MAC address
for cxgb4vf interfaces from the host
Signed-off-by: Hariprasad Shenai <hariprasad@...lsio.com>
---
drivers/net/ethernet/chelsio/cxgb4/cxgb4.h | 3 ++
drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c | 24 ++++++++-
drivers/net/ethernet/chelsio/cxgb4/t4_hw.c | 41 ++++++++++++++
.../net/ethernet/chelsio/cxgb4vf/cxgb4vf_main.c | 24 +++++++++
drivers/net/ethernet/chelsio/cxgb4vf/t4vf_common.h | 3 ++
drivers/net/ethernet/chelsio/cxgb4vf/t4vf_hw.c | 63 +++++++++++++++++++---
6 files changed, 151 insertions(+), 7 deletions(-)
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
index 2e2aa9fec9bb..bcfa51226b46 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
@@ -1521,4 +1521,7 @@ void t4_idma_monitor_init(struct adapter *adapter,
void t4_idma_monitor(struct adapter *adapter,
struct sge_idma_monitor_state *idma,
int hz, int ticks);
+int t4_set_vf_mac_acl(struct adapter *adapter, unsigned int vf,
+ unsigned int naddr, u8 *addr);
+
#endif /* __CXGB4_H__ */
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
index b7e932ec6894..2bb804c93688 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
@@ -3078,6 +3078,26 @@ static int cxgb_change_mtu(struct net_device *dev, int new_mtu)
return ret;
}
+#ifdef CONFIG_PCI_IOV
+static int cxgb_set_vf_mac(struct net_device *dev, int vf, u8 *mac)
+{
+ struct port_info *pi = netdev_priv(dev);
+ struct adapter *adap = pi->adapter;
+
+ /* verify MAC addr is valid */
+ if (!is_valid_ether_addr(mac)) {
+ dev_err(pi->adapter->pdev_dev,
+ "Invalid Ethernet address %pM for VF %d\n",
+ mac, vf);
+ return -EINVAL;
+ }
+
+ dev_info(pi->adapter->pdev_dev,
+ "Setting MAC %pM on VF %d\n", mac, vf);
+ return t4_set_vf_mac_acl(adap, vf + 1, 1, mac);
+}
+#endif
+
static int cxgb_set_mac_addr(struct net_device *dev, void *p)
{
int ret;
@@ -3136,10 +3156,12 @@ static const struct net_device_ops cxgb4_netdev_ops = {
#ifdef CONFIG_NET_RX_BUSY_POLL
.ndo_busy_poll = cxgb_busy_poll,
#endif
-
};
static const struct net_device_ops cxgb4_mgmt_netdev_ops = {
+#ifdef CONFIG_PCI_IOV
+ .ndo_set_vf_mac = cxgb_set_vf_mac,
+#endif
};
static void get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
index dc92c80a75f4..2a476cc4e073 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
@@ -8264,3 +8264,44 @@ void t4_idma_monitor(struct adapter *adapter,
t4_sge_decode_idma_state(adapter, idma->idma_state[i]);
}
}
+
+/**
+ * t4_set_vf_mac - Set MAC address for the specified VF
+ * @adapter: The adapter
+ * @vf: one of the VFs instantiated by the specified PF
+ * @naddr: the number of MAC addresses
+ * @addr: the MAC address(es) to be set to the specified VF
+ */
+int t4_set_vf_mac_acl(struct adapter *adapter, unsigned int vf,
+ unsigned int naddr, u8 *addr)
+{
+ struct fw_acl_mac_cmd cmd;
+
+ memset(&cmd, 0, sizeof(cmd));
+ cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP_V(FW_ACL_MAC_CMD) |
+ FW_CMD_REQUEST_F |
+ FW_CMD_WRITE_F |
+ FW_ACL_MAC_CMD_PFN_V(adapter->pf) |
+ FW_ACL_MAC_CMD_VFN_V(vf));
+
+ /* Note: Do not enable the ACL */
+ cmd.en_to_len16 = cpu_to_be32((unsigned int)FW_LEN16(cmd));
+ cmd.nmac = naddr;
+
+ switch (adapter->pf) {
+ case 3:
+ memcpy(cmd.macaddr3, addr, sizeof(cmd.macaddr3));
+ break;
+ case 2:
+ memcpy(cmd.macaddr2, addr, sizeof(cmd.macaddr2));
+ break;
+ case 1:
+ memcpy(cmd.macaddr1, addr, sizeof(cmd.macaddr1));
+ break;
+ case 0:
+ memcpy(cmd.macaddr0, addr, sizeof(cmd.macaddr0));
+ break;
+ }
+
+ return t4_wr_mbox(adapter, adapter->mbox, &cmd, sizeof(cmd), &cmd);
+}
diff --git a/drivers/net/ethernet/chelsio/cxgb4vf/cxgb4vf_main.c b/drivers/net/ethernet/chelsio/cxgb4vf/cxgb4vf_main.c
index e116bb8d1729..f2951bf68992 100644
--- a/drivers/net/ethernet/chelsio/cxgb4vf/cxgb4vf_main.c
+++ b/drivers/net/ethernet/chelsio/cxgb4vf/cxgb4vf_main.c
@@ -2777,6 +2777,7 @@ static int cxgb4vf_pci_probe(struct pci_dev *pdev,
struct adapter *adapter;
struct port_info *pi;
struct net_device *netdev;
+ unsigned int pf;
/*
* Print our driver banner the first time we're called to initialize a
@@ -2903,8 +2904,11 @@ static int cxgb4vf_pci_probe(struct pci_dev *pdev,
* Allocate our "adapter ports" and stitch everything together.
*/
pmask = adapter->params.vfres.pmask;
+ pf = t4vf_get_pf_from_vf(adapter);
for_each_port(adapter, pidx) {
int port_id, viid;
+ u8 mac[ETH_ALEN];
+ unsigned int naddr = 1;
/*
* We simplistically allocate our virtual interfaces
@@ -2975,6 +2979,26 @@ static int cxgb4vf_pci_probe(struct pci_dev *pdev,
pidx);
goto err_free_dev;
}
+
+ err = t4vf_get_vf_mac_acl(adapter, pf, &naddr, mac);
+ if (err) {
+ dev_err(&pdev->dev,
+ "unable to determine MAC ACL address, "
+ "continuing anyway.. (status %d)\n", err);
+ } else if (naddr && adapter->params.vfres.nvi == 1) {
+ struct sockaddr addr;
+
+ ether_addr_copy(addr.sa_data, mac);
+ err = cxgb4vf_set_mac_addr(netdev, &addr);
+ if (err) {
+ dev_err(&pdev->dev,
+ "unable to set MAC address %pM\n",
+ mac);
+ goto err_free_dev;
+ }
+ dev_info(&pdev->dev,
+ "Using assigned MAC ACL: %pM\n", mac);
+ }
}
/* See what interrupts we'll be using. If we've been configured to
diff --git a/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_common.h b/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_common.h
index 8ee541431e8b..8067424ad4a8 100644
--- a/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_common.h
+++ b/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_common.h
@@ -347,6 +347,7 @@ int t4vf_bar2_sge_qregs(struct adapter *adapter,
u64 *pbar2_qoffset,
unsigned int *pbar2_qid);
+unsigned int t4vf_get_pf_from_vf(struct adapter *);
int t4vf_get_sge_params(struct adapter *);
int t4vf_get_vpd_params(struct adapter *);
int t4vf_get_dev_params(struct adapter *);
@@ -381,5 +382,7 @@ int t4vf_eth_eq_free(struct adapter *, unsigned int);
int t4vf_handle_fw_rpl(struct adapter *, const __be64 *);
int t4vf_prep_adapter(struct adapter *);
+int t4vf_get_vf_mac_acl(struct adapter *adapter, unsigned int pf,
+ unsigned int *naddr, u8 *addr);
#endif /* __T4VF_COMMON_H__ */
diff --git a/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_hw.c b/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_hw.c
index 427bfa71388b..879f4c52b3d5 100644
--- a/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_hw.c
+++ b/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_hw.c
@@ -639,6 +639,15 @@ int t4vf_bar2_sge_qregs(struct adapter *adapter,
return 0;
}
+unsigned int t4vf_get_pf_from_vf(struct adapter *adapter)
+{
+ u32 whoami;
+
+ whoami = t4_read_reg(adapter, T4VF_PL_BASE_ADDR + PL_VF_WHOAMI_A);
+ return (CHELSIO_CHIP_VERSION(adapter->params.chip) <= CHELSIO_T5 ?
+ SOURCEPF_G(whoami) : T6_SOURCEPF_G(whoami));
+}
+
/**
* t4vf_get_sge_params - retrieve adapter Scatter gather Engine parameters
* @adapter: the adapter
@@ -716,7 +725,6 @@ int t4vf_get_sge_params(struct adapter *adapter)
* read.
*/
if (!is_t4(adapter->params.chip)) {
- u32 whoami;
unsigned int pf, s_hps, s_qpp;
params[0] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
@@ -740,11 +748,7 @@ int t4vf_get_sge_params(struct adapter *adapter)
* register we just read. Do it once here so other code in
* the driver can just use it.
*/
- whoami = t4_read_reg(adapter,
- T4VF_PL_BASE_ADDR + PL_VF_WHOAMI_A);
- pf = CHELSIO_CHIP_VERSION(adapter->params.chip) <= CHELSIO_T5 ?
- SOURCEPF_G(whoami) : T6_SOURCEPF_G(whoami);
-
+ pf = t4vf_get_pf_from_vf(adapter);
s_hps = (HOSTPAGESIZEPF0_S +
(HOSTPAGESIZEPF1_S - HOSTPAGESIZEPF0_S) * pf);
sge_params->sge_vf_hps =
@@ -1807,3 +1811,50 @@ int t4vf_prep_adapter(struct adapter *adapter)
return 0;
}
+
+/**
+ * t4vf_get_vf_mac_acl - Get the MAC address to be set to
+ * the VI of this VF.
+ * @adapter: The adapter
+ * @pf: The pf associated with vf
+ * @naddr: the number of ACL MAC addresses returned in addr
+ * @addr: Placeholder for MAC addresses
+ *
+ * Find the MAC address to be set to the VF's VI. The requested MAC address
+ * is from the host OS via callback in the PF driver.
+ */
+int t4vf_get_vf_mac_acl(struct adapter *adapter, unsigned int pf,
+ unsigned int *naddr, u8 *addr)
+{
+ struct fw_acl_mac_cmd cmd;
+ int ret;
+
+ memset(&cmd, 0, sizeof(cmd));
+ cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP_V(FW_ACL_MAC_CMD) |
+ FW_CMD_REQUEST_F |
+ FW_CMD_READ_F);
+ cmd.en_to_len16 = cpu_to_be32((unsigned int)FW_LEN16(cmd));
+ ret = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &cmd);
+ if (ret)
+ return ret;
+
+ if (cmd.nmac < *naddr)
+ *naddr = cmd.nmac;
+
+ switch (pf) {
+ case 3:
+ memcpy(addr, cmd.macaddr3, sizeof(cmd.macaddr3));
+ break;
+ case 2:
+ memcpy(addr, cmd.macaddr2, sizeof(cmd.macaddr2));
+ break;
+ case 1:
+ memcpy(addr, cmd.macaddr1, sizeof(cmd.macaddr1));
+ break;
+ case 0:
+ memcpy(addr, cmd.macaddr0, sizeof(cmd.macaddr0));
+ break;
+ }
+
+ return ret;
+}
--
2.3.4
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