From 22449858f8eae3f03399f76b4a982dd2f0d4df00 Mon Sep 17 00:00:00 2001 From: Codrin Ciubotariu Date: Wed, 9 Sep 2015 18:00:52 +0300 Subject: drivers/net/vsc9953: Add commands to manipulate the FDB for VSC9953 The new command: ethsw [port ] [vlan ] fdb { [help] | show | flush | { add | del } } Can be used to add and delete FDB entries. Also, the command can be used to show entries from the FDB tables. When used with [port ] and [vlan ], only the matching the FDB entries can be seen or flushed. The command has also been added to the generic ethsw parser from cmd_ethsw.c. Signed-off-by: Johnson Leung Signed-off-by: Codrin Ciubotariu Acked-by: Joe Hershberger Reviewed-by: York Sun --- drivers/net/vsc9953.c | 472 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 472 insertions(+) (limited to 'drivers/net') diff --git a/drivers/net/vsc9953.c b/drivers/net/vsc9953.c index 21b14e6a19..071906c1fb 100644 --- a/drivers/net/vsc9953.c +++ b/drivers/net/vsc9953.c @@ -783,6 +783,389 @@ static int vsc9953_port_learn_mode_get(int port_no, enum port_learn_mode *mode) return 0; } +/* wait for FDB to become available */ +static int vsc9953_mac_table_poll_idle(void) +{ + struct vsc9953_analyzer *l2ana_reg; + u32 timeout; + + l2ana_reg = (struct vsc9953_analyzer *)(VSC9953_OFFSET + + VSC9953_ANA_OFFSET); + + timeout = 50000; + while (((in_le32(&l2ana_reg->ana_tables.mac_access) & + VSC9953_MAC_CMD_MASK) != + VSC9953_MAC_CMD_IDLE) && --timeout) + udelay(1); + + return timeout ? 0 : -EBUSY; +} + +/* enum describing available commands for the MAC table */ +enum mac_table_cmd { + MAC_TABLE_READ, + MAC_TABLE_LOOKUP, + MAC_TABLE_WRITE, + MAC_TABLE_LEARN, + MAC_TABLE_FORGET, + MAC_TABLE_GET_NEXT, + MAC_TABLE_AGE, +}; + +/* Issues a command to the FDB table */ +static int vsc9953_mac_table_cmd(enum mac_table_cmd cmd) +{ + struct vsc9953_analyzer *l2ana_reg; + + l2ana_reg = (struct vsc9953_analyzer *)(VSC9953_OFFSET + + VSC9953_ANA_OFFSET); + + switch (cmd) { + case MAC_TABLE_READ: + clrsetbits_le32(&l2ana_reg->ana_tables.mac_access, + VSC9953_MAC_CMD_MASK | VSC9953_MAC_CMD_VALID, + VSC9953_MAC_CMD_READ); + break; + case MAC_TABLE_LOOKUP: + clrsetbits_le32(&l2ana_reg->ana_tables.mac_access, + VSC9953_MAC_CMD_MASK, VSC9953_MAC_CMD_READ | + VSC9953_MAC_CMD_VALID); + break; + case MAC_TABLE_WRITE: + clrsetbits_le32(&l2ana_reg->ana_tables.mac_access, + VSC9953_MAC_CMD_MASK | + VSC9953_MAC_ENTRYTYPE_MASK, + VSC9953_MAC_CMD_WRITE | + VSC9953_MAC_ENTRYTYPE_LOCKED); + break; + case MAC_TABLE_LEARN: + clrsetbits_le32(&l2ana_reg->ana_tables.mac_access, + VSC9953_MAC_CMD_MASK | + VSC9953_MAC_ENTRYTYPE_MASK, + VSC9953_MAC_CMD_LEARN | + VSC9953_MAC_ENTRYTYPE_LOCKED | + VSC9953_MAC_CMD_VALID); + break; + case MAC_TABLE_FORGET: + clrsetbits_le32(&l2ana_reg->ana_tables.mac_access, + VSC9953_MAC_CMD_MASK | + VSC9953_MAC_ENTRYTYPE_MASK, + VSC9953_MAC_CMD_FORGET); + break; + case MAC_TABLE_GET_NEXT: + clrsetbits_le32(&l2ana_reg->ana_tables.mac_access, + VSC9953_MAC_CMD_MASK | + VSC9953_MAC_ENTRYTYPE_MASK, + VSC9953_MAC_CMD_NEXT); + break; + case MAC_TABLE_AGE: + clrsetbits_le32(&l2ana_reg->ana_tables.mac_access, + VSC9953_MAC_CMD_MASK | + VSC9953_MAC_ENTRYTYPE_MASK, + VSC9953_MAC_CMD_AGE); + break; + default: + printf("Unknown MAC table command\n"); + } + + if (vsc9953_mac_table_poll_idle() < 0) { + debug("MAC table timeout\n"); + return -1; + } + + return 0; +} + +/* show the FDB entries that correspond to a port and a VLAN */ +static void vsc9953_mac_table_show(int port_no, int vid) +{ + int rc[VSC9953_MAX_PORTS]; + enum port_learn_mode mode[VSC9953_MAX_PORTS]; + int i; + u32 val; + u32 vlan; + u32 mach; + u32 macl; + u32 dest_indx; + struct vsc9953_analyzer *l2ana_reg; + + l2ana_reg = (struct vsc9953_analyzer *)(VSC9953_OFFSET + + VSC9953_ANA_OFFSET); + + /* disable auto learning */ + if (port_no == ETHSW_CMD_PORT_ALL) { + for (i = 0; i < VSC9953_MAX_PORTS; i++) { + rc[i] = vsc9953_port_learn_mode_get(i, &mode[i]); + if (!rc[i] && mode[i] != PORT_LEARN_NONE) + vsc9953_port_learn_mode_set(i, PORT_LEARN_NONE); + } + } else { + rc[port_no] = vsc9953_port_learn_mode_get(port_no, + &mode[port_no]); + if (!rc[port_no] && mode[port_no] != PORT_LEARN_NONE) + vsc9953_port_learn_mode_set(port_no, PORT_LEARN_NONE); + } + + /* write port and vid to get selected FDB entries */ + val = in_le32(&l2ana_reg->ana.anag_efil); + if (port_no != ETHSW_CMD_PORT_ALL) { + val = bitfield_replace_by_mask(val, VSC9953_AGE_PORT_MASK, + port_no) | VSC9953_AGE_PORT_EN; + } + if (vid != ETHSW_CMD_VLAN_ALL) { + val = bitfield_replace_by_mask(val, VSC9953_AGE_VID_MASK, + vid) | VSC9953_AGE_VID_EN; + } + out_le32(&l2ana_reg->ana.anag_efil, val); + + /* set MAC and VLAN to 0 to look from beginning */ + clrbits_le32(&l2ana_reg->ana_tables.mach_data, + VSC9953_MAC_VID_MASK | VSC9953_MAC_MACH_MASK); + out_le32(&l2ana_reg->ana_tables.macl_data, 0); + + /* get entries */ + printf("%10s %17s %5s %4s\n", "EntryType", "MAC", "PORT", "VID"); + do { + if (vsc9953_mac_table_cmd(MAC_TABLE_GET_NEXT) < 0) { + debug("GET NEXT MAC table command failed\n"); + break; + } + + val = in_le32(&l2ana_reg->ana_tables.mac_access); + + /* get out when an invalid entry is found */ + if (!(val & VSC9953_MAC_CMD_VALID)) + break; + + switch (val & VSC9953_MAC_ENTRYTYPE_MASK) { + case VSC9953_MAC_ENTRYTYPE_NORMAL: + printf("%10s ", "Dynamic"); + break; + case VSC9953_MAC_ENTRYTYPE_LOCKED: + printf("%10s ", "Static"); + break; + case VSC9953_MAC_ENTRYTYPE_IPV4MCAST: + printf("%10s ", "IPv4 Mcast"); + break; + case VSC9953_MAC_ENTRYTYPE_IPV6MCAST: + printf("%10s ", "IPv6 Mcast"); + break; + default: + printf("%10s ", "Unknown"); + } + + dest_indx = bitfield_extract_by_mask(val, + VSC9953_MAC_DESTIDX_MASK); + + val = in_le32(&l2ana_reg->ana_tables.mach_data); + vlan = bitfield_extract_by_mask(val, VSC9953_MAC_VID_MASK); + mach = bitfield_extract_by_mask(val, VSC9953_MAC_MACH_MASK); + macl = in_le32(&l2ana_reg->ana_tables.macl_data); + + printf("%02x:%02x:%02x:%02x:%02x:%02x ", (mach >> 8) & 0xff, + mach & 0xff, (macl >> 24) & 0xff, (macl >> 16) & 0xff, + (macl >> 8) & 0xff, macl & 0xff); + printf("%5d ", dest_indx); + printf("%4d\n", vlan); + } while (1); + + /* set learning mode to previous value */ + if (port_no == ETHSW_CMD_PORT_ALL) { + for (i = 0; i < VSC9953_MAX_PORTS; i++) { + if (!rc[i] && mode[i] != PORT_LEARN_NONE) + vsc9953_port_learn_mode_set(i, mode[i]); + } + } else { + /* If administrative down, skip */ + if (!rc[port_no] && mode[port_no] != PORT_LEARN_NONE) + vsc9953_port_learn_mode_set(port_no, mode[port_no]); + } + + /* reset FDB port and VLAN FDB selection */ + clrbits_le32(&l2ana_reg->ana.anag_efil, VSC9953_AGE_PORT_EN | + VSC9953_AGE_PORT_MASK | VSC9953_AGE_VID_EN | + VSC9953_AGE_VID_MASK); +} + +/* Add a static FDB entry */ +static int vsc9953_mac_table_add(u8 port_no, uchar mac[6], int vid) +{ + u32 val; + struct vsc9953_analyzer *l2ana_reg; + + l2ana_reg = (struct vsc9953_analyzer *)(VSC9953_OFFSET + + VSC9953_ANA_OFFSET); + + val = in_le32(&l2ana_reg->ana_tables.mach_data); + val = bitfield_replace_by_mask(val, VSC9953_MACHDATA_VID_MASK, vid) | + (mac[0] << 8) | (mac[1] << 0); + out_le32(&l2ana_reg->ana_tables.mach_data, val); + + out_le32(&l2ana_reg->ana_tables.macl_data, + (mac[2] << 24) | (mac[3] << 16) | (mac[4] << 8) | + (mac[5] << 0)); + + /* set on which port is the MAC address added */ + val = in_le32(&l2ana_reg->ana_tables.mac_access); + val = bitfield_replace_by_mask(val, VSC9953_MAC_DESTIDX_MASK, port_no); + out_le32(&l2ana_reg->ana_tables.mac_access, val); + + if (vsc9953_mac_table_cmd(MAC_TABLE_LEARN) < 0) + return -1; + + /* check if the MAC address was indeed added */ + val = in_le32(&l2ana_reg->ana_tables.mach_data); + val = bitfield_replace_by_mask(val, VSC9953_MACHDATA_VID_MASK, vid) | + (mac[0] << 8) | (mac[1] << 0); + out_le32(&l2ana_reg->ana_tables.mach_data, val); + + out_le32(&l2ana_reg->ana_tables.macl_data, + (mac[2] << 24) | (mac[3] << 16) | (mac[4] << 8) | + (mac[5] << 0)); + + if (vsc9953_mac_table_cmd(MAC_TABLE_READ) < 0) + return -1; + + val = in_le32(&l2ana_reg->ana_tables.mac_access); + + if ((port_no != bitfield_extract_by_mask(val, + VSC9953_MAC_DESTIDX_MASK))) { + printf("Failed to add MAC address\n"); + return -1; + } + return 0; +} + +/* Delete a FDB entry */ +static int vsc9953_mac_table_del(uchar mac[6], u16 vid) +{ + u32 val; + struct vsc9953_analyzer *l2ana_reg; + + l2ana_reg = (struct vsc9953_analyzer *)(VSC9953_OFFSET + + VSC9953_ANA_OFFSET); + + /* check first if MAC entry is present */ + val = in_le32(&l2ana_reg->ana_tables.mach_data); + val = bitfield_replace_by_mask(val, VSC9953_MACHDATA_VID_MASK, vid) | + (mac[0] << 8) | (mac[1] << 0); + out_le32(&l2ana_reg->ana_tables.mach_data, val); + + out_le32(&l2ana_reg->ana_tables.macl_data, + (mac[2] << 24) | (mac[3] << 16) | (mac[4] << 8) | + (mac[5] << 0)); + + if (vsc9953_mac_table_cmd(MAC_TABLE_LOOKUP) < 0) { + debug("Lookup in the MAC table failed\n"); + return -1; + } + + if (!(in_le32(&l2ana_reg->ana_tables.mac_access) & + VSC9953_MAC_CMD_VALID)) { + printf("The MAC address: %02x:%02x:%02x:%02x:%02x:%02x ", + mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]); + printf("VLAN: %d does not exist.\n", vid); + return -1; + } + + /* FDB entry found, proceed to delete */ + val = in_le32(&l2ana_reg->ana_tables.mach_data); + val = bitfield_replace_by_mask(val, VSC9953_MACHDATA_VID_MASK, vid) | + (mac[0] << 8) | (mac[1] << 0); + out_le32(&l2ana_reg->ana_tables.mach_data, val); + + out_le32(&l2ana_reg->ana_tables.macl_data, (mac[2] << 24) | + (mac[3] << 16) | (mac[4] << 8) | (mac[5] << 0)); + + if (vsc9953_mac_table_cmd(MAC_TABLE_FORGET) < 0) + return -1; + + /* check if the MAC entry is still in FDB */ + val = in_le32(&l2ana_reg->ana_tables.mach_data); + val = bitfield_replace_by_mask(val, VSC9953_MACHDATA_VID_MASK, vid) | + (mac[0] << 8) | (mac[1] << 0); + out_le32(&l2ana_reg->ana_tables.mach_data, val); + + out_le32(&l2ana_reg->ana_tables.macl_data, (mac[2] << 24) | + (mac[3] << 16) | (mac[4] << 8) | (mac[5] << 0)); + + if (vsc9953_mac_table_cmd(MAC_TABLE_LOOKUP) < 0) { + debug("Lookup in the MAC table failed\n"); + return -1; + } + if (in_le32(&l2ana_reg->ana_tables.mac_access) & + VSC9953_MAC_CMD_VALID) { + printf("Failed to delete MAC address\n"); + return -1; + } + + return 0; +} + +/* age the unlocked entries in FDB */ +static void vsc9953_mac_table_age(int port_no, int vid) +{ + int rc[VSC9953_MAX_PORTS]; + enum port_learn_mode mode[VSC9953_MAX_PORTS]; + u32 val; + int i; + struct vsc9953_analyzer *l2ana_reg; + + l2ana_reg = (struct vsc9953_analyzer *)(VSC9953_OFFSET + + VSC9953_ANA_OFFSET); + + /* set port and VID for selective aging */ + val = in_le32(&l2ana_reg->ana.anag_efil); + if (port_no != ETHSW_CMD_PORT_ALL) { + /* disable auto learning */ + rc[port_no] = vsc9953_port_learn_mode_get(port_no, + &mode[port_no]); + if (!rc[port_no] && mode[port_no] != PORT_LEARN_NONE) + vsc9953_port_learn_mode_set(port_no, PORT_LEARN_NONE); + + val = bitfield_replace_by_mask(val, VSC9953_AGE_PORT_MASK, + port_no) | VSC9953_AGE_PORT_EN; + } else { + /* disable auto learning on all ports */ + for (i = 0; i < VSC9953_MAX_PORTS; i++) { + rc[i] = vsc9953_port_learn_mode_get(i, &mode[i]); + if (!rc[i] && mode[i] != PORT_LEARN_NONE) + vsc9953_port_learn_mode_set(i, PORT_LEARN_NONE); + } + } + + if (vid != ETHSW_CMD_VLAN_ALL) { + val = bitfield_replace_by_mask(val, VSC9953_AGE_VID_MASK, vid) | + VSC9953_AGE_VID_EN; + } + out_le32(&l2ana_reg->ana.anag_efil, val); + + /* age the dynamic FDB entries */ + vsc9953_mac_table_cmd(MAC_TABLE_AGE); + + /* clear previously set port and VID */ + clrbits_le32(&l2ana_reg->ana.anag_efil, VSC9953_AGE_PORT_EN | + VSC9953_AGE_PORT_MASK | VSC9953_AGE_VID_EN | + VSC9953_AGE_VID_MASK); + + if (port_no != ETHSW_CMD_PORT_ALL) { + if (!rc[port_no] && mode[port_no] != PORT_LEARN_NONE) + vsc9953_port_learn_mode_set(port_no, mode[port_no]); + } else { + for (i = 0; i < VSC9953_MAX_PORTS; i++) { + if (!rc[i] && mode[i] != PORT_LEARN_NONE) + vsc9953_port_learn_mode_set(i, mode[i]); + } + } +} + +/* Delete all the dynamic FDB entries */ +static void vsc9953_mac_table_flush(int port, int vid) +{ + vsc9953_mac_table_age(port, vid); + vsc9953_mac_table_age(port, vid); +} + static int vsc9953_port_status_key_func(struct ethsw_command_def *parsed_cmd) { int i; @@ -949,6 +1332,91 @@ static int vsc9953_learn_set_key_func(struct ethsw_command_def *parsed_cmd) return CMD_RET_SUCCESS; } +static int vsc9953_fdb_show_key_func(struct ethsw_command_def *parsed_cmd) +{ + if (parsed_cmd->port != ETHSW_CMD_PORT_ALL && + !VSC9953_PORT_CHECK(parsed_cmd->port)) { + printf("Invalid port number: %d\n", parsed_cmd->port); + return CMD_RET_FAILURE; + } + + if (parsed_cmd->vid != ETHSW_CMD_VLAN_ALL && + !VSC9953_VLAN_CHECK(parsed_cmd->vid)) { + printf("Invalid VID number: %d\n", parsed_cmd->vid); + return CMD_RET_FAILURE; + } + + vsc9953_mac_table_show(parsed_cmd->port, parsed_cmd->vid); + + return CMD_RET_SUCCESS; +} + +static int vsc9953_fdb_flush_key_func(struct ethsw_command_def *parsed_cmd) +{ + if (parsed_cmd->port != ETHSW_CMD_PORT_ALL && + !VSC9953_PORT_CHECK(parsed_cmd->port)) { + printf("Invalid port number: %d\n", parsed_cmd->port); + return CMD_RET_FAILURE; + } + + if (parsed_cmd->vid != ETHSW_CMD_VLAN_ALL && + !VSC9953_VLAN_CHECK(parsed_cmd->vid)) { + printf("Invalid VID number: %d\n", parsed_cmd->vid); + return CMD_RET_FAILURE; + } + + vsc9953_mac_table_flush(parsed_cmd->port, parsed_cmd->vid); + + return CMD_RET_SUCCESS; +} + +static int vsc9953_fdb_entry_add_key_func(struct ethsw_command_def *parsed_cmd) +{ + int vid; + + /* a port number must be present */ + if (parsed_cmd->port == ETHSW_CMD_PORT_ALL) { + printf("Please specify a port\n"); + return CMD_RET_FAILURE; + } + + if (!VSC9953_PORT_CHECK(parsed_cmd->port)) { + printf("Invalid port number: %d\n", parsed_cmd->port); + return CMD_RET_FAILURE; + } + + /* Use VLAN 1 if VID is not set */ + vid = (parsed_cmd->vid == ETHSW_CMD_VLAN_ALL ? 1 : parsed_cmd->vid); + + if (!VSC9953_VLAN_CHECK(vid)) { + printf("Invalid VID number: %d\n", vid); + return CMD_RET_FAILURE; + } + + if (vsc9953_mac_table_add(parsed_cmd->port, parsed_cmd->ethaddr, vid)) + return CMD_RET_FAILURE; + + return CMD_RET_SUCCESS; +} + +static int vsc9953_fdb_entry_del_key_func(struct ethsw_command_def *parsed_cmd) +{ + int vid; + + /* Use VLAN 1 if VID is not set */ + vid = (parsed_cmd->vid == ETHSW_CMD_VLAN_ALL ? 1 : parsed_cmd->vid); + + if (!VSC9953_VLAN_CHECK(vid)) { + printf("Invalid VID number: %d\n", vid); + return CMD_RET_FAILURE; + } + + if (vsc9953_mac_table_del(parsed_cmd->ethaddr, vid)) + return CMD_RET_FAILURE; + + return CMD_RET_SUCCESS; +} + static struct ethsw_command_func vsc9953_cmd_func = { .ethsw_name = "L2 Switch VSC9953", .port_enable = &vsc9953_port_status_key_func, @@ -958,6 +1426,10 @@ static struct ethsw_command_func vsc9953_cmd_func = { .port_stats_clear = &vsc9953_port_stats_clear_key_func, .port_learn = &vsc9953_learn_set_key_func, .port_learn_show = &vsc9953_learn_show_key_func, + .fdb_show = &vsc9953_fdb_show_key_func, + .fdb_flush = &vsc9953_fdb_flush_key_func, + .fdb_entry_add = &vsc9953_fdb_entry_add_key_func, + .fdb_entry_del = &vsc9953_fdb_entry_del_key_func, }; #endif /* CONFIG_CMD_ETHSW */ -- cgit v1.2.1