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Message-Id: <1516724523-27972-1-git-send-email-ganeshgr@chelsio.com>
Date: Tue, 23 Jan 2018 21:52:03 +0530
From: Ganesh Goudar <ganeshgr@...lsio.com>
To: netdev@...r.kernel.org, davem@...emloft.net
Cc: nirranjan@...lsio.com, indranil@...lsio.com, venkatesh@...lsio.com,
Ganesh Goudar <ganeshgr@...lsio.com>
Subject: [PATCH net-next] cxgb4/cxgb4vf: add support for ndo_set_vf_vlan
implement ndo_set_vf_vlan for mgmt netdevice to configure
the PCIe VF.
Original work by: Casey Leedom <leedom@...lsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@...lsio.com>
---
drivers/net/ethernet/chelsio/cxgb4/cxgb4.h | 3 ++
drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c | 26 +++++++++++++++++-
drivers/net/ethernet/chelsio/cxgb4/t4_hw.c | 32 ++++++++++++++++++++++
drivers/net/ethernet/chelsio/cxgb4/t4fw_api.h | 16 ++++++++---
drivers/net/ethernet/chelsio/cxgb4vf/adapter.h | 1 +
.../net/ethernet/chelsio/cxgb4vf/cxgb4vf_main.c | 2 ++
drivers/net/ethernet/chelsio/cxgb4vf/sge.c | 15 ++++++++--
drivers/net/ethernet/chelsio/cxgb4vf/t4vf_common.h | 1 +
drivers/net/ethernet/chelsio/cxgb4vf/t4vf_hw.c | 28 +++++++++++++++++++
9 files changed, 116 insertions(+), 8 deletions(-)
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
index 3e02187..4294673 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
@@ -820,6 +820,7 @@ struct vf_info {
unsigned char vf_mac_addr[ETH_ALEN];
unsigned int tx_rate;
bool pf_set_mac;
+ u16 vlan;
};
struct mbox_list {
@@ -1738,4 +1739,6 @@ void free_rspq_fl(struct adapter *adap, struct sge_rspq *rq, struct sge_fl *fl);
void free_tx_desc(struct adapter *adap, struct sge_txq *q,
unsigned int n, bool unmap);
void free_txq(struct adapter *adap, struct sge_txq *q);
+int t4_set_vlan_acl(struct adapter *adap, unsigned int mbox, unsigned int vf,
+ u16 vlan);
#endif /* __CXGB4_H__ */
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
index 4716387..f0fd2eb 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
@@ -2783,7 +2783,30 @@ static int cxgb4_mgmt_set_vf_rate(struct net_device *dev, int vf,
return 0;
}
-#endif
+static int cxgb4_mgmt_set_vf_vlan(struct net_device *dev, int vf,
+ u16 vlan, u8 qos, __be16 vlan_proto)
+{
+ struct port_info *pi = netdev_priv(dev);
+ struct adapter *adap = pi->adapter;
+ int ret;
+
+ if (vf >= adap->num_vfs || vlan > 4095 || qos > 7)
+ return -EINVAL;
+
+ if (vlan_proto != htons(ETH_P_8021Q) || qos != 0)
+ return -EPROTONOSUPPORT;
+
+ ret = t4_set_vlan_acl(adap, adap->mbox, vf + 1, vlan);
+ if (!ret) {
+ adap->vfinfo[vf].vlan = vlan;
+ return 0;
+ }
+
+ dev_err(adap->pdev_dev, "Err %d %s VLAN ACL for PF/VF %d/%d\n",
+ ret, (vlan ? "setting" : "clearing"), adap->pf, vf);
+ return ret;
+}
+#endif /* CONFIG_PCI_IOV */
static int cxgb_set_mac_addr(struct net_device *dev, void *p)
{
@@ -3207,6 +3230,7 @@ static const struct net_device_ops cxgb4_mgmt_netdev_ops = {
.ndo_get_vf_config = cxgb4_mgmt_get_vf_config,
.ndo_set_vf_rate = cxgb4_mgmt_set_vf_rate,
.ndo_get_phys_port_id = cxgb4_mgmt_get_phys_port_id,
+ .ndo_set_vf_vlan = cxgb4_mgmt_set_vf_vlan,
};
#endif
diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
index 6d76851..3405547 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
@@ -9899,3 +9899,35 @@ int t4_i2c_rd(struct adapter *adap, unsigned int mbox, int port,
return ret;
}
+
+/**
+ * t4_set_vlan_acl - Set a VLAN id for the specified VF
+ * @adapter: the adapter
+ * @mbox: mailbox to use for the FW command
+ * @vf: one of the VFs instantiated by the specified PF
+ * @vlan: The vlanid to be set
+ */
+int t4_set_vlan_acl(struct adapter *adap, unsigned int mbox, unsigned int vf,
+ u16 vlan)
+{
+ struct fw_acl_vlan_cmd vlan_cmd;
+ unsigned int enable;
+
+ enable = (vlan ? FW_ACL_VLAN_CMD_EN_F : 0);
+ memset(&vlan_cmd, 0, sizeof(vlan_cmd));
+ vlan_cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP_V(FW_ACL_VLAN_CMD) |
+ FW_CMD_REQUEST_F |
+ FW_CMD_WRITE_F |
+ FW_CMD_EXEC_F |
+ FW_ACL_VLAN_CMD_PFN_V(adap->pf) |
+ FW_ACL_VLAN_CMD_VFN_V(vf));
+ vlan_cmd.en_to_len16 = cpu_to_be32(enable | FW_LEN16(vlan_cmd));
+ /* Drop all packets that donot match vlan id */
+ vlan_cmd.dropnovlan_fm = FW_ACL_VLAN_CMD_FM_F;
+ if (enable != 0) {
+ vlan_cmd.nvlan = 1;
+ vlan_cmd.vlanid[0] = cpu_to_be16(vlan);
+ }
+
+ return t4_wr_mbox(adap, adap->mbox, &vlan_cmd, sizeof(vlan_cmd), NULL);
+}
diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4fw_api.h b/drivers/net/ethernet/chelsio/cxgb4/t4fw_api.h
index f3310d5..f88766d 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/t4fw_api.h
+++ b/drivers/net/ethernet/chelsio/cxgb4/t4fw_api.h
@@ -2353,14 +2353,22 @@ struct fw_acl_vlan_cmd {
#define FW_ACL_VLAN_CMD_VFN_S 0
#define FW_ACL_VLAN_CMD_VFN_V(x) ((x) << FW_ACL_VLAN_CMD_VFN_S)
-#define FW_ACL_VLAN_CMD_EN_S 31
-#define FW_ACL_VLAN_CMD_EN_V(x) ((x) << FW_ACL_VLAN_CMD_EN_S)
+#define FW_ACL_VLAN_CMD_EN_S 31
+#define FW_ACL_VLAN_CMD_EN_M 0x1
+#define FW_ACL_VLAN_CMD_EN_V(x) ((x) << FW_ACL_VLAN_CMD_EN_S)
+#define FW_ACL_VLAN_CMD_EN_G(x) \
+ (((x) >> S_FW_ACL_VLAN_CMD_EN_S) & FW_ACL_VLAN_CMD_EN_M)
+#define FW_ACL_VLAN_CMD_EN_F FW_ACL_VLAN_CMD_EN_V(1U)
#define FW_ACL_VLAN_CMD_DROPNOVLAN_S 7
#define FW_ACL_VLAN_CMD_DROPNOVLAN_V(x) ((x) << FW_ACL_VLAN_CMD_DROPNOVLAN_S)
-#define FW_ACL_VLAN_CMD_FM_S 6
-#define FW_ACL_VLAN_CMD_FM_V(x) ((x) << FW_ACL_VLAN_CMD_FM_S)
+#define FW_ACL_VLAN_CMD_FM_S 6
+#define FW_ACL_VLAN_CMD_FM_M 0x1
+#define FW_ACL_VLAN_CMD_FM_V(x) ((x) << FW_ACL_VLAN_CMD_FM_S)
+#define FW_ACL_VLAN_CMD_FM_G(x) \
+ (((x) >> FW_ACL_VLAN_CMD_FM_S) & FW_ACL_VLAN_CMD_FM_M)
+#define FW_ACL_VLAN_CMD_FM_F FW_ACL_VLAN_CMD_FM_V(1U)
/* old 16-bit port capabilities bitmap (fw_port_cap16_t) */
enum fw_port_cap {
diff --git a/drivers/net/ethernet/chelsio/cxgb4vf/adapter.h b/drivers/net/ethernet/chelsio/cxgb4vf/adapter.h
index 08c6ddb..5883f09 100644
--- a/drivers/net/ethernet/chelsio/cxgb4vf/adapter.h
+++ b/drivers/net/ethernet/chelsio/cxgb4vf/adapter.h
@@ -92,6 +92,7 @@ struct sge_rspq;
*/
struct port_info {
struct adapter *adapter; /* our adapter */
+ u32 vlan_id; /* vlan id for VST */
u16 viid; /* virtual interface ID */
s16 xact_addr_filt; /* index of our MAC address filter */
u16 rss_size; /* size of VI's RSS table slice */
diff --git a/drivers/net/ethernet/chelsio/cxgb4vf/cxgb4vf_main.c b/drivers/net/ethernet/chelsio/cxgb4vf/cxgb4vf_main.c
index 96f69f8..b7e79e6 100644
--- a/drivers/net/ethernet/chelsio/cxgb4vf/cxgb4vf_main.c
+++ b/drivers/net/ethernet/chelsio/cxgb4vf/cxgb4vf_main.c
@@ -791,6 +791,8 @@ static int cxgb4vf_open(struct net_device *dev)
if (err)
goto err_unwind;
+ pi->vlan_id = t4vf_get_vf_vlan_acl(adapter);
+
netif_tx_start_all_queues(dev);
set_bit(pi->port_id, &adapter->open_device_map);
return 0;
diff --git a/drivers/net/ethernet/chelsio/cxgb4vf/sge.c b/drivers/net/ethernet/chelsio/cxgb4vf/sge.c
index 129b914..dfce5df 100644
--- a/drivers/net/ethernet/chelsio/cxgb4vf/sge.c
+++ b/drivers/net/ethernet/chelsio/cxgb4vf/sge.c
@@ -1202,6 +1202,10 @@ int t4vf_eth_xmit(struct sk_buff *skb, struct net_device *dev)
BUG_ON(qidx >= pi->nqsets);
txq = &adapter->sge.ethtxq[pi->first_qset + qidx];
+ if (pi->vlan_id && !skb_vlan_tag_present(skb))
+ __vlan_hwaccel_put_tag(skb, cpu_to_be16(ETH_P_8021Q),
+ pi->vlan_id);
+
/*
* Take this opportunity to reclaim any TX Descriptors whose DMA
* transfers have completed.
@@ -1570,6 +1574,7 @@ static void do_gro(struct sge_eth_rxq *rxq, const struct pkt_gl *gl,
{
struct adapter *adapter = rxq->rspq.adapter;
struct sge *s = &adapter->sge;
+ struct port_info *pi;
int ret;
struct sk_buff *skb;
@@ -1586,8 +1591,9 @@ static void do_gro(struct sge_eth_rxq *rxq, const struct pkt_gl *gl,
skb->truesize += skb->data_len;
skb->ip_summed = CHECKSUM_UNNECESSARY;
skb_record_rx_queue(skb, rxq->rspq.idx);
+ pi = netdev_priv(skb->dev);
- if (pkt->vlan_ex) {
+ if (pkt->vlan_ex && !pi->vlan_id) {
__vlan_hwaccel_put_tag(skb, cpu_to_be16(ETH_P_8021Q),
be16_to_cpu(pkt->vlan));
rxq->stats.vlan_ex++;
@@ -1620,6 +1626,7 @@ int t4vf_ethrx_handler(struct sge_rspq *rspq, const __be64 *rsp,
struct sge_eth_rxq *rxq = container_of(rspq, struct sge_eth_rxq, rspq);
struct adapter *adapter = rspq->adapter;
struct sge *s = &adapter->sge;
+ struct port_info *pi;
/*
* If this is a good TCP packet and we have Generic Receive Offload
@@ -1644,6 +1651,7 @@ int t4vf_ethrx_handler(struct sge_rspq *rspq, const __be64 *rsp,
__skb_pull(skb, s->pktshift);
skb->protocol = eth_type_trans(skb, rspq->netdev);
skb_record_rx_queue(skb, rspq->idx);
+ pi = netdev_priv(skb->dev);
rxq->stats.pkts++;
if (csum_ok && !pkt->err_vec &&
@@ -1660,9 +1668,10 @@ int t4vf_ethrx_handler(struct sge_rspq *rspq, const __be64 *rsp,
} else
skb_checksum_none_assert(skb);
- if (pkt->vlan_ex) {
+ if (pkt->vlan_ex && !pi->vlan_id) {
rxq->stats.vlan_ex++;
- __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), be16_to_cpu(pkt->vlan));
+ __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
+ be16_to_cpu(pkt->vlan));
}
netif_receive_skb(skb);
diff --git a/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_common.h b/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_common.h
index 9cf9c56..712e8f0 100644
--- a/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_common.h
+++ b/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_common.h
@@ -413,5 +413,6 @@ 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);
+int t4vf_get_vf_vlan_acl(struct adapter *adapter);
#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 67aec59..5377935 100644
--- a/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_hw.c
+++ b/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_hw.c
@@ -2147,3 +2147,31 @@ int t4vf_get_vf_mac_acl(struct adapter *adapter, unsigned int pf,
return ret;
}
+
+/**
+ * t4vf_get_vf_vlan_acl - Get the VLAN ID to be set to
+ * the VI of this VF.
+ * @adapter: The adapter
+ *
+ * Find the VLAN ID to be set to the VF's VI. The requested VLAN ID
+ * is from the host OS via callback in the PF driver.
+ */
+int t4vf_get_vf_vlan_acl(struct adapter *adapter)
+{
+ struct fw_acl_vlan_cmd cmd;
+ int vlan = 0;
+ int ret = 0;
+
+ cmd.op_to_vfn = htonl(FW_CMD_OP_V(FW_ACL_VLAN_CMD) |
+ FW_CMD_REQUEST_F | FW_CMD_READ_F);
+
+ /* Note: Do not enable the ACL */
+ cmd.en_to_len16 = htonl((unsigned int)FW_LEN16(cmd));
+
+ ret = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &cmd);
+
+ if (!ret)
+ vlan = be16_to_cpu(cmd.vlanid[0]);
+
+ return vlan;
+}
--
2.1.0
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