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linux/net/ncsi/internal.h
DelphineCCChiu e85e271dec net/ncsi: Fix the multi thread manner of NCSI driver 
Currently NCSI driver will send several NCSI commands back to back without
waiting the response of previous NCSI command or timeout in some state
when NIC have multi channel. This operation against the single thread
manner defined by NCSI SPEC(section 6.3.2.3 in DSP0222_1.1.1)

According to NCSI SPEC(section 6.2.13.1 in DSP0222_1.1.1), we should probe
one channel at a time by sending NCSI commands (Clear initial state, Get
version ID, Get capabilities...), than repeat this steps until the max
number of channels which we got from NCSI command (Get capabilities) has
been probed.

Fixes: e6f44ed6d0 ("net/ncsi: Package and channel management")
Signed-off-by: DelphineCCChiu <delphine_cc_chiu@wiwynn.com>
Link: https://lore.kernel.org/r/20240529065856.825241-1-delphine_cc_chiu@wiwynn.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-06-01 16:21:44 -07:00

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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright Gavin Shan, IBM Corporation 2016.
*/
#ifndef __NCSI_INTERNAL_H__
#define __NCSI_INTERNAL_H__
enum {
NCSI_CAP_BASE = 0,
NCSI_CAP_GENERIC = 0,
NCSI_CAP_BC,
NCSI_CAP_MC,
NCSI_CAP_BUFFER,
NCSI_CAP_AEN,
NCSI_CAP_VLAN,
NCSI_CAP_MAX
};
enum {
NCSI_CAP_GENERIC_HWA = 0x01, /* HW arbitration */
NCSI_CAP_GENERIC_HDS = 0x02, /* HNC driver status change */
NCSI_CAP_GENERIC_FC = 0x04, /* HNC to MC flow control */
NCSI_CAP_GENERIC_FC1 = 0x08, /* MC to HNC flow control */
NCSI_CAP_GENERIC_MC = 0x10, /* Global MC filtering */
NCSI_CAP_GENERIC_HWA_UNKNOWN = 0x00, /* Unknown HW arbitration */
NCSI_CAP_GENERIC_HWA_SUPPORT = 0x20, /* Supported HW arbitration */
NCSI_CAP_GENERIC_HWA_NOT_SUPPORT = 0x40, /* No HW arbitration */
NCSI_CAP_GENERIC_HWA_RESERVED = 0x60, /* Reserved HW arbitration */
NCSI_CAP_GENERIC_HWA_MASK = 0x60, /* Mask for HW arbitration */
NCSI_CAP_GENERIC_MASK = 0x7f,
NCSI_CAP_BC_ARP = 0x01, /* ARP packet filtering */
NCSI_CAP_BC_DHCPC = 0x02, /* DHCP client filtering */
NCSI_CAP_BC_DHCPS = 0x04, /* DHCP server filtering */
NCSI_CAP_BC_NETBIOS = 0x08, /* NetBIOS packet filtering */
NCSI_CAP_BC_MASK = 0x0f,
NCSI_CAP_MC_IPV6_NEIGHBOR = 0x01, /* IPv6 neighbor filtering */
NCSI_CAP_MC_IPV6_ROUTER = 0x02, /* IPv6 router filering */
NCSI_CAP_MC_DHCPV6_RELAY = 0x04, /* DHCPv6 relay / server MC */
NCSI_CAP_MC_DHCPV6_WELL_KNOWN = 0x08, /* DHCPv6 well-known MC */
NCSI_CAP_MC_IPV6_MLD = 0x10, /* IPv6 MLD filtering */
NCSI_CAP_MC_IPV6_NEIGHBOR_S = 0x20, /* IPv6 neighbour filtering */
NCSI_CAP_MC_MASK = 0x3f,
NCSI_CAP_AEN_LSC = 0x01, /* Link status change */
NCSI_CAP_AEN_CR = 0x02, /* Configuration required */
NCSI_CAP_AEN_HDS = 0x04, /* HNC driver status */
NCSI_CAP_AEN_MASK = 0x07,
NCSI_CAP_VLAN_ONLY = 0x01, /* Filter VLAN packet only */
NCSI_CAP_VLAN_NO = 0x02, /* Filter VLAN and non-VLAN */
NCSI_CAP_VLAN_ANY = 0x04, /* Filter Any-and-non-VLAN */
NCSI_CAP_VLAN_MASK = 0x07
};
enum {
NCSI_MODE_BASE = 0,
NCSI_MODE_ENABLE = 0,
NCSI_MODE_TX_ENABLE,
NCSI_MODE_LINK,
NCSI_MODE_VLAN,
NCSI_MODE_BC,
NCSI_MODE_MC,
NCSI_MODE_AEN,
NCSI_MODE_FC,
NCSI_MODE_MAX
};
/* Supported media status bits for Mellanox Mac affinity command.
* Bit (0-2) for different protocol support; Bit 1 for RBT support,
* bit 1 for SMBUS support and bit 2 for PCIE support. Bit (3-5)
* for different protocol availability. Bit 4 for RBT, bit 4 for
* SMBUS and bit 5 for PCIE.
*/
enum {
MLX_MC_RBT_SUPPORT = 0x01, /* MC supports RBT */
MLX_MC_RBT_AVL = 0x08, /* RBT medium is available */
};
/* OEM Vendor Manufacture ID */
#define NCSI_OEM_MFR_MLX_ID 0x8119
#define NCSI_OEM_MFR_BCM_ID 0x113d
#define NCSI_OEM_MFR_INTEL_ID 0x157
/* Intel specific OEM command */
#define NCSI_OEM_INTEL_CMD_GMA 0x06 /* CMD ID for Get MAC */
#define NCSI_OEM_INTEL_CMD_KEEP_PHY 0x20 /* CMD ID for Keep PHY up */
/* Broadcom specific OEM Command */
#define NCSI_OEM_BCM_CMD_GMA 0x01 /* CMD ID for Get MAC */
/* Mellanox specific OEM Command */
#define NCSI_OEM_MLX_CMD_GMA 0x00 /* CMD ID for Get MAC */
#define NCSI_OEM_MLX_CMD_GMA_PARAM 0x1b /* Parameter for GMA */
#define NCSI_OEM_MLX_CMD_SMAF 0x01 /* CMD ID for Set MC Affinity */
#define NCSI_OEM_MLX_CMD_SMAF_PARAM 0x07 /* Parameter for SMAF */
/* OEM Command payload lengths*/
#define NCSI_OEM_INTEL_CMD_GMA_LEN 5
#define NCSI_OEM_INTEL_CMD_KEEP_PHY_LEN 7
#define NCSI_OEM_BCM_CMD_GMA_LEN 12
#define NCSI_OEM_MLX_CMD_GMA_LEN 8
#define NCSI_OEM_MLX_CMD_SMAF_LEN 60
/* Offset in OEM request */
#define MLX_SMAF_MAC_ADDR_OFFSET 8 /* Offset for MAC in SMAF */
#define MLX_SMAF_MED_SUPPORT_OFFSET 14 /* Offset for medium in SMAF */
/* Mac address offset in OEM response */
#define BCM_MAC_ADDR_OFFSET 28
#define MLX_MAC_ADDR_OFFSET 8
#define INTEL_MAC_ADDR_OFFSET 1
struct ncsi_channel_version {
u8 major; /* NCSI version major */
u8 minor; /* NCSI version minor */
u8 update; /* NCSI version update */
char alpha1; /* NCSI version alpha1 */
char alpha2; /* NCSI version alpha2 */
u8 fw_name[12]; /* Firmware name string */
u32 fw_version; /* Firmware version */
u16 pci_ids[4]; /* PCI identification */
u32 mf_id; /* Manufacture ID */
};
struct ncsi_channel_cap {
u32 index; /* Index of channel capabilities */
u32 cap; /* NCSI channel capability */
};
struct ncsi_channel_mode {
u32 index; /* Index of channel modes */
u32 enable; /* Enabled or disabled */
u32 size; /* Valid entries in ncm_data[] */
u32 data[8]; /* Data entries */
};
struct ncsi_channel_mac_filter {
u8 n_uc;
u8 n_mc;
u8 n_mixed;
u64 bitmap;
unsigned char *addrs;
};
struct ncsi_channel_vlan_filter {
u8 n_vids;
u64 bitmap;
u16 *vids;
};
struct ncsi_channel_stats {
u32 hnc_cnt_hi; /* Counter cleared */
u32 hnc_cnt_lo; /* Counter cleared */
u32 hnc_rx_bytes; /* Rx bytes */
u32 hnc_tx_bytes; /* Tx bytes */
u32 hnc_rx_uc_pkts; /* Rx UC packets */
u32 hnc_rx_mc_pkts; /* Rx MC packets */
u32 hnc_rx_bc_pkts; /* Rx BC packets */
u32 hnc_tx_uc_pkts; /* Tx UC packets */
u32 hnc_tx_mc_pkts; /* Tx MC packets */
u32 hnc_tx_bc_pkts; /* Tx BC packets */
u32 hnc_fcs_err; /* FCS errors */
u32 hnc_align_err; /* Alignment errors */
u32 hnc_false_carrier; /* False carrier detection */
u32 hnc_runt_pkts; /* Rx runt packets */
u32 hnc_jabber_pkts; /* Rx jabber packets */
u32 hnc_rx_pause_xon; /* Rx pause XON frames */
u32 hnc_rx_pause_xoff; /* Rx XOFF frames */
u32 hnc_tx_pause_xon; /* Tx XON frames */
u32 hnc_tx_pause_xoff; /* Tx XOFF frames */
u32 hnc_tx_s_collision; /* Single collision frames */
u32 hnc_tx_m_collision; /* Multiple collision frames */
u32 hnc_l_collision; /* Late collision frames */
u32 hnc_e_collision; /* Excessive collision frames */
u32 hnc_rx_ctl_frames; /* Rx control frames */
u32 hnc_rx_64_frames; /* Rx 64-bytes frames */
u32 hnc_rx_127_frames; /* Rx 65-127 bytes frames */
u32 hnc_rx_255_frames; /* Rx 128-255 bytes frames */
u32 hnc_rx_511_frames; /* Rx 256-511 bytes frames */
u32 hnc_rx_1023_frames; /* Rx 512-1023 bytes frames */
u32 hnc_rx_1522_frames; /* Rx 1024-1522 bytes frames */
u32 hnc_rx_9022_frames; /* Rx 1523-9022 bytes frames */
u32 hnc_tx_64_frames; /* Tx 64-bytes frames */
u32 hnc_tx_127_frames; /* Tx 65-127 bytes frames */
u32 hnc_tx_255_frames; /* Tx 128-255 bytes frames */
u32 hnc_tx_511_frames; /* Tx 256-511 bytes frames */
u32 hnc_tx_1023_frames; /* Tx 512-1023 bytes frames */
u32 hnc_tx_1522_frames; /* Tx 1024-1522 bytes frames */
u32 hnc_tx_9022_frames; /* Tx 1523-9022 bytes frames */
u32 hnc_rx_valid_bytes; /* Rx valid bytes */
u32 hnc_rx_runt_pkts; /* Rx error runt packets */
u32 hnc_rx_jabber_pkts; /* Rx error jabber packets */
u32 ncsi_rx_cmds; /* Rx NCSI commands */
u32 ncsi_dropped_cmds; /* Dropped commands */
u32 ncsi_cmd_type_errs; /* Command type errors */
u32 ncsi_cmd_csum_errs; /* Command checksum errors */
u32 ncsi_rx_pkts; /* Rx NCSI packets */
u32 ncsi_tx_pkts; /* Tx NCSI packets */
u32 ncsi_tx_aen_pkts; /* Tx AEN packets */
u32 pt_tx_pkts; /* Tx packets */
u32 pt_tx_dropped; /* Tx dropped packets */
u32 pt_tx_channel_err; /* Tx channel errors */
u32 pt_tx_us_err; /* Tx undersize errors */
u32 pt_rx_pkts; /* Rx packets */
u32 pt_rx_dropped; /* Rx dropped packets */
u32 pt_rx_channel_err; /* Rx channel errors */
u32 pt_rx_us_err; /* Rx undersize errors */
u32 pt_rx_os_err; /* Rx oversize errors */
};
struct ncsi_dev_priv;
struct ncsi_package;
#define NCSI_PACKAGE_SHIFT 5
#define NCSI_PACKAGE_INDEX(c) (((c) >> NCSI_PACKAGE_SHIFT) & 0x7)
#define NCSI_RESERVED_CHANNEL 0x1f
#define NCSI_CHANNEL_INDEX(c) ((c) & ((1 << NCSI_PACKAGE_SHIFT) - 1))
#define NCSI_TO_CHANNEL(p, c) (((p) << NCSI_PACKAGE_SHIFT) | (c))
#define NCSI_MAX_PACKAGE 8
#define NCSI_MAX_CHANNEL 32
struct ncsi_channel {
unsigned char id;
int state;
#define NCSI_CHANNEL_INACTIVE 1
#define NCSI_CHANNEL_ACTIVE 2
#define NCSI_CHANNEL_INVISIBLE 3
bool reconfigure_needed;
spinlock_t lock; /* Protect filters etc */
struct ncsi_package *package;
struct ncsi_channel_version version;
struct ncsi_channel_cap caps[NCSI_CAP_MAX];
struct ncsi_channel_mode modes[NCSI_MODE_MAX];
/* Filtering Settings */
struct ncsi_channel_mac_filter mac_filter;
struct ncsi_channel_vlan_filter vlan_filter;
struct ncsi_channel_stats stats;
struct {
struct timer_list timer;
bool enabled;
unsigned int state;
#define NCSI_CHANNEL_MONITOR_START 0
#define NCSI_CHANNEL_MONITOR_RETRY 1
#define NCSI_CHANNEL_MONITOR_WAIT 2
#define NCSI_CHANNEL_MONITOR_WAIT_MAX 5
} monitor;
struct list_head node;
struct list_head link;
};
struct ncsi_package {
unsigned char id; /* NCSI 3-bits package ID */
unsigned char uuid[16]; /* UUID */
struct ncsi_dev_priv *ndp; /* NCSI device */
spinlock_t lock; /* Protect the package */
unsigned int channel_num; /* Number of channels */
struct list_head channels; /* List of channels */
struct list_head node; /* Form list of packages */
bool multi_channel; /* Enable multiple channels */
u32 channel_whitelist; /* Channels to configure */
struct ncsi_channel *preferred_channel; /* Primary channel */
};
struct ncsi_request {
unsigned char id; /* Request ID - 0 to 255 */
bool used; /* Request that has been assigned */
unsigned int flags; /* NCSI request property */
#define NCSI_REQ_FLAG_EVENT_DRIVEN 1
#define NCSI_REQ_FLAG_NETLINK_DRIVEN 2
struct ncsi_dev_priv *ndp; /* Associated NCSI device */
struct sk_buff *cmd; /* Associated NCSI command packet */
struct sk_buff *rsp; /* Associated NCSI response packet */
struct timer_list timer; /* Timer on waiting for response */
bool enabled; /* Time has been enabled or not */
u32 snd_seq; /* netlink sending sequence number */
u32 snd_portid; /* netlink portid of sender */
struct nlmsghdr nlhdr; /* netlink message header */
};
enum {
ncsi_dev_state_major = 0xff00,
ncsi_dev_state_minor = 0x00ff,
ncsi_dev_state_probe_deselect = 0x0201,
ncsi_dev_state_probe_package,
ncsi_dev_state_probe_channel,
ncsi_dev_state_probe_mlx_gma,
ncsi_dev_state_probe_mlx_smaf,
ncsi_dev_state_probe_cis,
ncsi_dev_state_probe_keep_phy,
ncsi_dev_state_probe_gvi,
ncsi_dev_state_probe_gc,
ncsi_dev_state_probe_gls,
ncsi_dev_state_probe_dp,
ncsi_dev_state_config_sp = 0x0301,
ncsi_dev_state_config_cis,
ncsi_dev_state_config_oem_gma,
ncsi_dev_state_config_clear_vids,
ncsi_dev_state_config_svf,
ncsi_dev_state_config_ev,
ncsi_dev_state_config_sma,
ncsi_dev_state_config_ebf,
ncsi_dev_state_config_dgmf,
ncsi_dev_state_config_ecnt,
ncsi_dev_state_config_ec,
ncsi_dev_state_config_ae,
ncsi_dev_state_config_gls,
ncsi_dev_state_config_done,
ncsi_dev_state_suspend_select = 0x0401,
ncsi_dev_state_suspend_gls,
ncsi_dev_state_suspend_dcnt,
ncsi_dev_state_suspend_dc,
ncsi_dev_state_suspend_deselect,
ncsi_dev_state_suspend_done
};
struct vlan_vid {
struct list_head list;
__be16 proto;
u16 vid;
};
struct ncsi_dev_priv {
struct ncsi_dev ndev; /* Associated NCSI device */
unsigned int flags; /* NCSI device flags */
#define NCSI_DEV_PROBED 1 /* Finalized NCSI topology */
#define NCSI_DEV_HWA 2 /* Enabled HW arbitration */
#define NCSI_DEV_RESHUFFLE 4
#define NCSI_DEV_RESET 8 /* Reset state of NC */
unsigned int gma_flag; /* OEM GMA flag */
spinlock_t lock; /* Protect the NCSI device */
unsigned int package_probe_id;/* Current ID during probe */
unsigned int package_num; /* Number of packages */
unsigned int channel_probe_id;/* Current cahnnel ID during probe */
struct list_head packages; /* List of packages */
struct ncsi_channel *hot_channel; /* Channel was ever active */
struct ncsi_request requests[256]; /* Request table */
unsigned int request_id; /* Last used request ID */
#define NCSI_REQ_START_IDX 1
unsigned int pending_req_num; /* Number of pending requests */
struct ncsi_package *active_package; /* Currently handled package */
struct ncsi_channel *active_channel; /* Currently handled channel */
struct list_head channel_queue; /* Config queue of channels */
struct work_struct work; /* For channel management */
struct packet_type ptype; /* NCSI packet Rx handler */
struct list_head node; /* Form NCSI device list */
#define NCSI_MAX_VLAN_VIDS 15
struct list_head vlan_vids; /* List of active VLAN IDs */
bool multi_package; /* Enable multiple packages */
bool mlx_multi_host; /* Enable multi host Mellanox */
u32 package_whitelist; /* Packages to configure */
unsigned char channel_count; /* Num of channels to probe */
};
struct ncsi_cmd_arg {
struct ncsi_dev_priv *ndp; /* Associated NCSI device */
unsigned char type; /* Command in the NCSI packet */
unsigned char id; /* Request ID (sequence number) */
unsigned char package; /* Destination package ID */
unsigned char channel; /* Destination channel ID or 0x1f */
unsigned short payload; /* Command packet payload length */
unsigned int req_flags; /* NCSI request properties */
union {
unsigned char bytes[16]; /* Command packet specific data */
unsigned short words[8];
unsigned int dwords[4];
};
unsigned char *data; /* NCSI OEM data */
struct genl_info *info; /* Netlink information */
};
extern struct list_head ncsi_dev_list;
extern spinlock_t ncsi_dev_lock;
#define TO_NCSI_DEV_PRIV(nd) \
container_of(nd, struct ncsi_dev_priv, ndev)
#define NCSI_FOR_EACH_DEV(ndp) \
list_for_each_entry_rcu(ndp, &ncsi_dev_list, node)
#define NCSI_FOR_EACH_PACKAGE(ndp, np) \
list_for_each_entry_rcu(np, &ndp->packages, node)
#define NCSI_FOR_EACH_CHANNEL(np, nc) \
list_for_each_entry_rcu(nc, &np->channels, node)
/* Resources */
int ncsi_reset_dev(struct ncsi_dev *nd);
void ncsi_start_channel_monitor(struct ncsi_channel *nc);
void ncsi_stop_channel_monitor(struct ncsi_channel *nc);
struct ncsi_channel *ncsi_find_channel(struct ncsi_package *np,
unsigned char id);
struct ncsi_channel *ncsi_add_channel(struct ncsi_package *np,
unsigned char id);
struct ncsi_package *ncsi_find_package(struct ncsi_dev_priv *ndp,
unsigned char id);
struct ncsi_package *ncsi_add_package(struct ncsi_dev_priv *ndp,
unsigned char id);
void ncsi_remove_package(struct ncsi_package *np);
void ncsi_find_package_and_channel(struct ncsi_dev_priv *ndp,
unsigned char id,
struct ncsi_package **np,
struct ncsi_channel **nc);
struct ncsi_request *ncsi_alloc_request(struct ncsi_dev_priv *ndp,
unsigned int req_flags);
void ncsi_free_request(struct ncsi_request *nr);
struct ncsi_dev *ncsi_find_dev(struct net_device *dev);
int ncsi_process_next_channel(struct ncsi_dev_priv *ndp);
bool ncsi_channel_has_link(struct ncsi_channel *channel);
bool ncsi_channel_is_last(struct ncsi_dev_priv *ndp,
struct ncsi_channel *channel);
int ncsi_update_tx_channel(struct ncsi_dev_priv *ndp,
struct ncsi_package *np,
struct ncsi_channel *disable,
struct ncsi_channel *enable);
/* Packet handlers */
u32 ncsi_calculate_checksum(unsigned char *data, int len);
int ncsi_xmit_cmd(struct ncsi_cmd_arg *nca);
int ncsi_rcv_rsp(struct sk_buff *skb, struct net_device *dev,
struct packet_type *pt, struct net_device *orig_dev);
int ncsi_aen_handler(struct ncsi_dev_priv *ndp, struct sk_buff *skb);
#endif /* __NCSI_INTERNAL_H__ */
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