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| author |   Scott Feldman <sfeldma@gmail.com> | 2015-07-08 16:06:47 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2015-07-09 00:31:14 -0700 |
| commit | 77a58c741df1b91258cc4df3e6893ff61e8293a4 (patch) | |
| tree | 3641887a4ad9d2acddc1a6192128a8a10dc16b61 /drivers/net/ethernet/rocker/rocker.c | |
| parent | neterion: s2io: Use module_pci_driver (diff) | |
| download | linux-dev-77a58c741df1b91258cc4df3e6893ff61e8293a4.tar.xz linux-dev-77a58c741df1b91258cc4df3e6893ff61e8293a4.zip | |
rocker: add change MTU support
Implement ndo_change_mtu: on MTU change, reallocate Rx ring bufs and signal
HW of new port MTU value.
Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Tested-by: Simon Horman <simon.horman@netronome.com>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/rocker/rocker.c')
| -rw-r--r-- | drivers/net/ethernet/rocker/rocker.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/drivers/net/ethernet/rocker/rocker.c b/drivers/net/ethernet/rocker/rocker.c index 2d8578cade03..c0051673c9fa 100644 --- a/drivers/net/ethernet/rocker/rocker.c +++ b/drivers/net/ethernet/rocker/rocker.c @@ -1818,6 +1818,30 @@ rocker_cmd_set_port_settings_macaddr_prep(const struct rocker_port *rocker_port, } static int +rocker_cmd_set_port_settings_mtu_prep(const struct rocker_port *rocker_port, + struct rocker_desc_info *desc_info, + void *priv) +{ + int mtu = *(int *)priv; + struct rocker_tlv *cmd_info; + + if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, + ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS)) + return -EMSGSIZE; + cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); + if (!cmd_info) + return -EMSGSIZE; + if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT, + rocker_port->pport)) + return -EMSGSIZE; + if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MTU, + mtu)) + return -EMSGSIZE; + rocker_tlv_nest_end(desc_info, cmd_info); + return 0; +} + +static int rocker_cmd_set_port_learning_prep(const struct rocker_port *rocker_port, struct rocker_desc_info *desc_info, void *priv) @@ -1874,6 +1898,14 @@ static int rocker_cmd_set_port_settings_macaddr(struct rocker_port *rocker_port, macaddr, NULL, NULL); } +static int rocker_cmd_set_port_settings_mtu(struct rocker_port *rocker_port, + int mtu) +{ + return rocker_cmd_exec(rocker_port, SWITCHDEV_TRANS_NONE, 0, + rocker_cmd_set_port_settings_mtu_prep, + &mtu, NULL, NULL); +} + static int rocker_port_set_learning(struct rocker_port *rocker_port, enum switchdev_trans trans) { @@ -4152,6 +4184,34 @@ static int rocker_port_set_mac_address(struct net_device *dev, void *p) return 0; } +static int rocker_port_change_mtu(struct net_device *dev, int new_mtu) +{ + struct rocker_port *rocker_port = netdev_priv(dev); + int running = netif_running(dev); + int err; + +#define ROCKER_PORT_MIN_MTU 68 +#define ROCKER_PORT_MAX_MTU 9000 + + if (new_mtu < ROCKER_PORT_MIN_MTU || new_mtu > ROCKER_PORT_MAX_MTU) + return -EINVAL; + + if (running) + rocker_port_stop(dev); + + netdev_info(dev, "MTU change from %d to %d\n", dev->mtu, new_mtu); + dev->mtu = new_mtu; + + err = rocker_cmd_set_port_settings_mtu(rocker_port, new_mtu); + if (err) + return err; + + if (running) + err = rocker_port_open(dev); + + return err; +} + static int rocker_port_get_phys_port_name(struct net_device *dev, char *buf, size_t len) { @@ -4172,6 +4232,7 @@ static const struct net_device_ops rocker_port_netdev_ops = { .ndo_stop = rocker_port_stop, .ndo_start_xmit = rocker_port_xmit, .ndo_set_mac_address = rocker_port_set_mac_address, + .ndo_change_mtu = rocker_port_change_mtu, .ndo_bridge_getlink = switchdev_port_bridge_getlink, .ndo_bridge_setlink = switchdev_port_bridge_setlink, .ndo_bridge_dellink = switchdev_port_bridge_dellink, |