diff options
| author | WingMan Kwok <w-kwok2@ti.com> | 2018-04-18 00:30:42 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-04-19 04:00:58 +0300 |
| commit | 8585661b1a4c6924c4c7e7abe9beec0bcf53eab7 (patch) | |
| tree | 628a9a38b2cd2be982bdfa7df64093f76018eace /drivers/net/ethernet/ti | |
| parent | 0542a87c546726510e7a572b16c5493ca42024c4 (diff) | |
| download | linux-8585661b1a4c6924c4c7e7abe9beec0bcf53eab7.tar.xz | |
net: netcp: ethss: k2g: add promiscuous mode support
This patch adds support for promiscuous mode in k2g's network
driver. When upper layer instructs to transition from
non-promiscuous mode to promiscuous mode or vice versa
K2G network driver needs to configure ALE accordingly
so that in case of non-promiscuous mode, ALE will not flood
all unicast packets to host port, while in promiscuous
mode, it will pass all received unicast packets to
host port.
Signed-off-by: WingMan Kwok <w-kwok2@ti.com>
Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/ti')
| -rw-r--r-- | drivers/net/ethernet/ti/netcp_ethss.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/drivers/net/ethernet/ti/netcp_ethss.c b/drivers/net/ethernet/ti/netcp_ethss.c index 5bc792175e4e..6a728d35e776 100644 --- a/drivers/net/ethernet/ti/netcp_ethss.c +++ b/drivers/net/ethernet/ti/netcp_ethss.c @@ -2775,6 +2775,61 @@ static inline int gbe_hwtstamp_set(struct gbe_intf *gbe_intf, struct ifreq *req) } #endif /* CONFIG_TI_CPTS */ +static int gbe_set_rx_mode(void *intf_priv, bool promisc) +{ + struct gbe_intf *gbe_intf = intf_priv; + struct gbe_priv *gbe_dev = gbe_intf->gbe_dev; + struct cpsw_ale *ale = gbe_dev->ale; + unsigned long timeout; + int i, ret = -ETIMEDOUT; + + /* Disable(1)/Enable(0) Learn for all ports (host is port 0 and + * slaves are port 1 and up + */ + for (i = 0; i <= gbe_dev->num_slaves; i++) { + cpsw_ale_control_set(ale, i, + ALE_PORT_NOLEARN, !!promisc); + cpsw_ale_control_set(ale, i, + ALE_PORT_NO_SA_UPDATE, !!promisc); + } + + if (!promisc) { + /* Don't Flood All Unicast Packets to Host port */ + cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 0); + dev_vdbg(gbe_dev->dev, "promiscuous mode disabled\n"); + return 0; + } + + timeout = jiffies + HZ; + + /* Clear All Untouched entries */ + cpsw_ale_control_set(ale, 0, ALE_AGEOUT, 1); + do { + cpu_relax(); + if (cpsw_ale_control_get(ale, 0, ALE_AGEOUT)) { + ret = 0; + break; + } + + } while (time_after(timeout, jiffies)); + + /* Make sure it is not a false timeout */ + if (ret && !cpsw_ale_control_get(ale, 0, ALE_AGEOUT)) + return ret; + + cpsw_ale_control_set(ale, 0, ALE_AGEOUT, 1); + + /* Clear all mcast from ALE */ + cpsw_ale_flush_multicast(ale, + GBE_PORT_MASK(gbe_dev->ale_ports), + -1); + + /* Flood All Unicast Packets to Host port */ + cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 1); + dev_vdbg(gbe_dev->dev, "promiscuous mode enabled\n"); + return ret; +} + static int gbe_ioctl(void *intf_priv, struct ifreq *req, int cmd) { struct gbe_intf *gbe_intf = intf_priv; @@ -3529,6 +3584,7 @@ static int gbe_probe(struct netcp_device *netcp_device, struct device *dev, gbe_dev->max_num_slaves = 8; } else if (of_device_is_compatible(node, "ti,netcp-gbe-2")) { gbe_dev->max_num_slaves = 1; + gbe_module.set_rx_mode = gbe_set_rx_mode; } else if (of_device_is_compatible(node, "ti,netcp-xgbe")) { gbe_dev->max_num_slaves = 2; } else { |