mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-22 17:01:14 +00:00
staging: fsl-dpaa2/ethsw: add .ndo_fdb_dump callback
Implement the .ndo_fdb_dump callback for the switch net devices. The list of all offloaded FDB entries is retrieved through the dpsw_fdb_dump() firmware call. Filter the entries by the switch port on which the callback was called and for each of them create a new neighbour message. Also remove the requirement from the TODO list. Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com> Link: https://lore.kernel.org/r/1564416712-16946-4-git-send-email-ioana.ciornei@nxp.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
b380a4e6e5
commit
de01ac2e49
5 changed files with 224 additions and 3 deletions
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@ -1,7 +1,6 @@
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* Add I/O capabilities on switch port netdevices. This will allow control
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* Add I/O capabilities on switch port netdevices. This will allow control
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traffic to reach the CPU.
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traffic to reach the CPU.
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* Add ACL to redirect control traffic to CPU.
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* Add ACL to redirect control traffic to CPU.
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* Add support for displaying learned FDB entries
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* Add support for multiple FDBs and switch port partitioning
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* Add support for multiple FDBs and switch port partitioning
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* MC firmware uprev; the DPAA2 objects used by the Ethernet Switch driver
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* MC firmware uprev; the DPAA2 objects used by the Ethernet Switch driver
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need to be kept in sync with binary interface changes in MC
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need to be kept in sync with binary interface changes in MC
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@ -10,7 +10,7 @@
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/* DPSW Version */
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/* DPSW Version */
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#define DPSW_VER_MAJOR 8
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#define DPSW_VER_MAJOR 8
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#define DPSW_VER_MINOR 0
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#define DPSW_VER_MINOR 1
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#define DPSW_CMD_BASE_VERSION 1
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#define DPSW_CMD_BASE_VERSION 1
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#define DPSW_CMD_ID_OFFSET 4
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#define DPSW_CMD_ID_OFFSET 4
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@ -67,6 +67,7 @@
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#define DPSW_CMDID_FDB_ADD_MULTICAST DPSW_CMD_ID(0x086)
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#define DPSW_CMDID_FDB_ADD_MULTICAST DPSW_CMD_ID(0x086)
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#define DPSW_CMDID_FDB_REMOVE_MULTICAST DPSW_CMD_ID(0x087)
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#define DPSW_CMDID_FDB_REMOVE_MULTICAST DPSW_CMD_ID(0x087)
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#define DPSW_CMDID_FDB_SET_LEARNING_MODE DPSW_CMD_ID(0x088)
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#define DPSW_CMDID_FDB_SET_LEARNING_MODE DPSW_CMD_ID(0x088)
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#define DPSW_CMDID_FDB_DUMP DPSW_CMD_ID(0x08A)
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/* Macros for accessing command fields smaller than 1byte */
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/* Macros for accessing command fields smaller than 1byte */
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#define DPSW_MASK(field) \
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#define DPSW_MASK(field) \
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@ -351,6 +352,18 @@ struct dpsw_cmd_fdb_set_learning_mode {
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u8 mode;
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u8 mode;
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};
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};
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struct dpsw_cmd_fdb_dump {
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__le16 fdb_id;
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__le16 pad0;
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__le32 pad1;
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__le64 iova_addr;
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__le32 iova_size;
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};
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struct dpsw_rsp_fdb_dump {
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__le16 num_entries;
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};
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struct dpsw_rsp_get_api_version {
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struct dpsw_rsp_get_api_version {
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__le16 version_major;
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__le16 version_major;
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__le16 version_minor;
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__le16 version_minor;
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@ -980,6 +980,57 @@ int dpsw_fdb_add_unicast(struct fsl_mc_io *mc_io,
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return mc_send_command(mc_io, &cmd);
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return mc_send_command(mc_io, &cmd);
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}
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}
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/**
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* dpsw_fdb_dump() - Dump the content of FDB table into memory.
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* @mc_io: Pointer to MC portal's I/O object
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* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
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* @token: Token of DPSW object
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* @fdb_id: Forwarding Database Identifier
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* @iova_addr: Data will be stored here as an array of struct fdb_dump_entry
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* @iova_size: Memory size allocated at iova_addr
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* @num_entries:Number of entries written at iova_addr
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*
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* Return: Completion status. '0' on Success; Error code otherwise.
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*
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* The memory allocated at iova_addr must be initialized with zero before
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* command execution. If the FDB table does not fit into memory MC will stop
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* after the memory is filled up.
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* The struct fdb_dump_entry array must be parsed until the end of memory
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* area or until an entry with mac_addr set to zero is found.
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*/
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int dpsw_fdb_dump(struct fsl_mc_io *mc_io,
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u32 cmd_flags,
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u16 token,
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u16 fdb_id,
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u64 iova_addr,
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u32 iova_size,
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u16 *num_entries)
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{
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struct dpsw_cmd_fdb_dump *cmd_params;
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struct dpsw_rsp_fdb_dump *rsp_params;
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struct fsl_mc_command cmd = { 0 };
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int err;
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/* prepare command */
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cmd.header = mc_encode_cmd_header(DPSW_CMDID_FDB_DUMP,
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cmd_flags,
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token);
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cmd_params = (struct dpsw_cmd_fdb_dump *)cmd.params;
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cmd_params->fdb_id = cpu_to_le16(fdb_id);
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cmd_params->iova_addr = cpu_to_le64(iova_addr);
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cmd_params->iova_size = cpu_to_le32(iova_size);
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/* send command to mc */
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err = mc_send_command(mc_io, &cmd);
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if (err)
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return err;
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rsp_params = (struct dpsw_rsp_fdb_dump *)cmd.params;
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*num_entries = le16_to_cpu(rsp_params->num_entries);
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return 0;
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}
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/**
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/**
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* dpsw_fdb_remove_unicast() - removes an entry from MAC lookup table
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* dpsw_fdb_remove_unicast() - removes an entry from MAC lookup table
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* @mc_io: Pointer to MC portal's I/O object
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* @mc_io: Pointer to MC portal's I/O object
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@ -465,6 +465,31 @@ int dpsw_fdb_remove_unicast(struct fsl_mc_io *mc_io,
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u16 fdb_id,
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u16 fdb_id,
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const struct dpsw_fdb_unicast_cfg *cfg);
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const struct dpsw_fdb_unicast_cfg *cfg);
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#define DPSW_FDB_ENTRY_TYPE_DYNAMIC BIT(0)
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#define DPSW_FDB_ENTRY_TYPE_UNICAST BIT(1)
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/**
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* struct fdb_dump_entry - fdb snapshot entry
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* @mac_addr: MAC address
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* @type: bit0 - DINAMIC(1)/STATIC(0), bit1 - UNICAST(1)/MULTICAST(0)
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* @if_info: unicast - egress interface, multicast - number of egress interfaces
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* @if_mask: multicast - egress interface mask
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*/
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struct fdb_dump_entry {
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u8 mac_addr[6];
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u8 type;
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u8 if_info;
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u8 if_mask[8];
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};
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int dpsw_fdb_dump(struct fsl_mc_io *mc_io,
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u32 cmd_flags,
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u16 token,
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u16 fdb_id,
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u64 iova_addr,
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u32 iova_size,
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u16 *num_entries);
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/**
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/**
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* struct dpsw_fdb_multicast_cfg - Multi-cast entry configuration
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* struct dpsw_fdb_multicast_cfg - Multi-cast entry configuration
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* @type: Select static or dynamic entry
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* @type: Select static or dynamic entry
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@ -22,7 +22,7 @@ static struct workqueue_struct *ethsw_owq;
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/* Minimal supported DPSW version */
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/* Minimal supported DPSW version */
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#define DPSW_MIN_VER_MAJOR 8
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#define DPSW_MIN_VER_MAJOR 8
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#define DPSW_MIN_VER_MINOR 0
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#define DPSW_MIN_VER_MINOR 1
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#define DEFAULT_VLAN_ID 1
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#define DEFAULT_VLAN_ID 1
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@ -529,6 +529,138 @@ static int port_get_phys_name(struct net_device *netdev, char *name,
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return 0;
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return 0;
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}
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}
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struct ethsw_dump_ctx {
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struct net_device *dev;
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struct sk_buff *skb;
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struct netlink_callback *cb;
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int idx;
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};
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static int ethsw_fdb_do_dump(struct fdb_dump_entry *entry,
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struct ethsw_dump_ctx *dump)
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{
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int is_dynamic = entry->type & DPSW_FDB_ENTRY_DINAMIC;
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u32 portid = NETLINK_CB(dump->cb->skb).portid;
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u32 seq = dump->cb->nlh->nlmsg_seq;
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struct nlmsghdr *nlh;
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struct ndmsg *ndm;
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if (dump->idx < dump->cb->args[2])
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goto skip;
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nlh = nlmsg_put(dump->skb, portid, seq, RTM_NEWNEIGH,
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sizeof(*ndm), NLM_F_MULTI);
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if (!nlh)
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return -EMSGSIZE;
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ndm = nlmsg_data(nlh);
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ndm->ndm_family = AF_BRIDGE;
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ndm->ndm_pad1 = 0;
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ndm->ndm_pad2 = 0;
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ndm->ndm_flags = NTF_SELF;
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ndm->ndm_type = 0;
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ndm->ndm_ifindex = dump->dev->ifindex;
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ndm->ndm_state = is_dynamic ? NUD_REACHABLE : NUD_NOARP;
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if (nla_put(dump->skb, NDA_LLADDR, ETH_ALEN, entry->mac_addr))
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goto nla_put_failure;
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nlmsg_end(dump->skb, nlh);
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skip:
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dump->idx++;
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return 0;
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nla_put_failure:
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nlmsg_cancel(dump->skb, nlh);
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return -EMSGSIZE;
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}
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static int port_fdb_valid_entry(struct fdb_dump_entry *entry,
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struct ethsw_port_priv *port_priv)
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{
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int idx = port_priv->idx;
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int valid;
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if (entry->type & DPSW_FDB_ENTRY_TYPE_UNICAST)
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valid = entry->if_info == port_priv->idx;
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else
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valid = entry->if_mask[idx / 8] & BIT(idx % 8);
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return valid;
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}
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static int port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
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struct net_device *net_dev,
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struct net_device *filter_dev, int *idx)
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{
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struct ethsw_port_priv *port_priv = netdev_priv(net_dev);
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struct ethsw_core *ethsw = port_priv->ethsw_data;
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struct device *dev = net_dev->dev.parent;
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struct fdb_dump_entry *fdb_entries;
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struct fdb_dump_entry fdb_entry;
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struct ethsw_dump_ctx dump = {
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.dev = net_dev,
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.skb = skb,
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.cb = cb,
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.idx = *idx,
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};
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dma_addr_t fdb_dump_iova;
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u16 num_fdb_entries;
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u32 fdb_dump_size;
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int err = 0, i;
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u8 *dma_mem;
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fdb_dump_size = ethsw->sw_attr.max_fdb_entries * sizeof(fdb_entry);
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dma_mem = kzalloc(fdb_dump_size, GFP_KERNEL);
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if (!dma_mem)
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return -ENOMEM;
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memset(dma_mem, 0, fdb_dump_size);
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fdb_dump_iova = dma_map_single(dev, dma_mem, fdb_dump_size,
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DMA_FROM_DEVICE);
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if (dma_mapping_error(dev, fdb_dump_iova)) {
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netdev_err(net_dev, "dma_map_single() failed\n");
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err = -ENOMEM;
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goto err_map;
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}
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err = dpsw_fdb_dump(ethsw->mc_io, 0, ethsw->dpsw_handle, 0,
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fdb_dump_iova, fdb_dump_size, &num_fdb_entries);
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if (err) {
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netdev_err(net_dev, "dpsw_fdb_dump() = %d\n", err);
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goto err_dump;
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}
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dma_unmap_single(dev, fdb_dump_iova, fdb_dump_size, DMA_FROM_DEVICE);
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fdb_entries = (struct fdb_dump_entry *)dma_mem;
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for (i = 0; i < num_fdb_entries; i++) {
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fdb_entry = fdb_entries[i];
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if (!port_fdb_valid_entry(&fdb_entry, port_priv))
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continue;
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err = ethsw_fdb_do_dump(&fdb_entry, &dump);
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if (err)
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goto end;
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}
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end:
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*idx = dump.idx;
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kfree(dma_mem);
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return 0;
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err_dump:
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dma_unmap_single(dev, fdb_dump_iova, fdb_dump_size, DMA_TO_DEVICE);
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err_map:
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kfree(dma_mem);
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return err;
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}
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static const struct net_device_ops ethsw_port_ops = {
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static const struct net_device_ops ethsw_port_ops = {
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.ndo_open = port_open,
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.ndo_open = port_open,
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.ndo_stop = port_stop,
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.ndo_stop = port_stop,
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@ -538,6 +670,7 @@ static const struct net_device_ops ethsw_port_ops = {
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.ndo_change_mtu = port_change_mtu,
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.ndo_change_mtu = port_change_mtu,
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.ndo_has_offload_stats = port_has_offload_stats,
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.ndo_has_offload_stats = port_has_offload_stats,
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.ndo_get_offload_stats = port_get_offload_stats,
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.ndo_get_offload_stats = port_get_offload_stats,
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.ndo_fdb_dump = port_fdb_dump,
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.ndo_start_xmit = port_dropframe,
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.ndo_start_xmit = port_dropframe,
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.ndo_get_port_parent_id = swdev_get_port_parent_id,
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.ndo_get_port_parent_id = swdev_get_port_parent_id,
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