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linux-zen-desktop/drivers/net/ethernet/rocker/rocker_ofdpa.c

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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* drivers/net/ethernet/rocker/rocker_ofdpa.c - Rocker switch OF-DPA-like
* implementation
* Copyright (c) 2014 Scott Feldman <sfeldma@gmail.com>
* Copyright (c) 2014-2016 Jiri Pirko <jiri@mellanox.com>
*/
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/spinlock.h>
#include <linux/hashtable.h>
#include <linux/crc32.h>
#include <linux/netdevice.h>
#include <linux/inetdevice.h>
#include <linux/if_vlan.h>
#include <linux/if_bridge.h>
#include <net/neighbour.h>
#include <net/switchdev.h>
#include <net/ip_fib.h>
#include <net/nexthop.h>
#include <net/arp.h>
#include "rocker.h"
#include "rocker_tlv.h"
struct ofdpa_flow_tbl_key {
u32 priority;
enum rocker_of_dpa_table_id tbl_id;
union {
struct {
u32 in_pport;
u32 in_pport_mask;
enum rocker_of_dpa_table_id goto_tbl;
} ig_port;
struct {
u32 in_pport;
__be16 vlan_id;
__be16 vlan_id_mask;
enum rocker_of_dpa_table_id goto_tbl;
bool untagged;
__be16 new_vlan_id;
} vlan;
struct {
u32 in_pport;
u32 in_pport_mask;
__be16 eth_type;
u8 eth_dst[ETH_ALEN];
u8 eth_dst_mask[ETH_ALEN];
__be16 vlan_id;
__be16 vlan_id_mask;
enum rocker_of_dpa_table_id goto_tbl;
bool copy_to_cpu;
} term_mac;
struct {
__be16 eth_type;
__be32 dst4;
__be32 dst4_mask;
enum rocker_of_dpa_table_id goto_tbl;
u32 group_id;
} ucast_routing;
struct {
u8 eth_dst[ETH_ALEN];
u8 eth_dst_mask[ETH_ALEN];
int has_eth_dst;
int has_eth_dst_mask;
__be16 vlan_id;
u32 tunnel_id;
enum rocker_of_dpa_table_id goto_tbl;
u32 group_id;
bool copy_to_cpu;
} bridge;
struct {
u32 in_pport;
u32 in_pport_mask;
u8 eth_src[ETH_ALEN];
u8 eth_src_mask[ETH_ALEN];
u8 eth_dst[ETH_ALEN];
u8 eth_dst_mask[ETH_ALEN];
__be16 eth_type;
__be16 vlan_id;
__be16 vlan_id_mask;
u8 ip_proto;
u8 ip_proto_mask;
u8 ip_tos;
u8 ip_tos_mask;
u32 group_id;
} acl;
};
};
struct ofdpa_flow_tbl_entry {
struct hlist_node entry;
u32 cmd;
u64 cookie;
struct ofdpa_flow_tbl_key key;
size_t key_len;
u32 key_crc32; /* key */
struct fib_info *fi;
};
struct ofdpa_group_tbl_entry {
struct hlist_node entry;
u32 cmd;
u32 group_id; /* key */
u16 group_count;
u32 *group_ids;
union {
struct {
u8 pop_vlan;
} l2_interface;
struct {
u8 eth_src[ETH_ALEN];
u8 eth_dst[ETH_ALEN];
__be16 vlan_id;
u32 group_id;
} l2_rewrite;
struct {
u8 eth_src[ETH_ALEN];
u8 eth_dst[ETH_ALEN];
__be16 vlan_id;
bool ttl_check;
u32 group_id;
} l3_unicast;
};
};
struct ofdpa_fdb_tbl_entry {
struct hlist_node entry;
u32 key_crc32; /* key */
bool learned;
unsigned long touched;
struct ofdpa_fdb_tbl_key {
struct ofdpa_port *ofdpa_port;
u8 addr[ETH_ALEN];
__be16 vlan_id;
} key;
};
struct ofdpa_internal_vlan_tbl_entry {
struct hlist_node entry;
int ifindex; /* key */
u32 ref_count;
__be16 vlan_id;
};
struct ofdpa_neigh_tbl_entry {
struct hlist_node entry;
__be32 ip_addr; /* key */
struct net_device *dev;
u32 ref_count;
u32 index;
u8 eth_dst[ETH_ALEN];
bool ttl_check;
};
enum {
OFDPA_CTRL_LINK_LOCAL_MCAST,
OFDPA_CTRL_LOCAL_ARP,
OFDPA_CTRL_IPV4_MCAST,
OFDPA_CTRL_IPV6_MCAST,
OFDPA_CTRL_DFLT_BRIDGING,
OFDPA_CTRL_DFLT_OVS,
OFDPA_CTRL_MAX,
};
#define OFDPA_INTERNAL_VLAN_ID_BASE 0x0f00
#define OFDPA_N_INTERNAL_VLANS 255
#define OFDPA_VLAN_BITMAP_LEN BITS_TO_LONGS(VLAN_N_VID)
#define OFDPA_INTERNAL_VLAN_BITMAP_LEN BITS_TO_LONGS(OFDPA_N_INTERNAL_VLANS)
#define OFDPA_UNTAGGED_VID 0
struct ofdpa {
struct rocker *rocker;
DECLARE_HASHTABLE(flow_tbl, 16);
spinlock_t flow_tbl_lock; /* for flow tbl accesses */
u64 flow_tbl_next_cookie;
DECLARE_HASHTABLE(group_tbl, 16);
spinlock_t group_tbl_lock; /* for group tbl accesses */
struct timer_list fdb_cleanup_timer;
DECLARE_HASHTABLE(fdb_tbl, 16);
spinlock_t fdb_tbl_lock; /* for fdb tbl accesses */
unsigned long internal_vlan_bitmap[OFDPA_INTERNAL_VLAN_BITMAP_LEN];
DECLARE_HASHTABLE(internal_vlan_tbl, 8);
spinlock_t internal_vlan_tbl_lock; /* for vlan tbl accesses */
DECLARE_HASHTABLE(neigh_tbl, 16);
spinlock_t neigh_tbl_lock; /* for neigh tbl accesses */
u32 neigh_tbl_next_index;
unsigned long ageing_time;
bool fib_aborted;
};
struct ofdpa_port {
struct ofdpa *ofdpa;
struct rocker_port *rocker_port;
struct net_device *dev;
u32 pport;
struct net_device *bridge_dev;
__be16 internal_vlan_id;
int stp_state;
u32 brport_flags;
unsigned long ageing_time;
bool ctrls[OFDPA_CTRL_MAX];
unsigned long vlan_bitmap[OFDPA_VLAN_BITMAP_LEN];
};
static const u8 zero_mac[ETH_ALEN] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
static const u8 ff_mac[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
static const u8 ll_mac[ETH_ALEN] = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 };
static const u8 ll_mask[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0 };
static const u8 mcast_mac[ETH_ALEN] = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 };
static const u8 ipv4_mcast[ETH_ALEN] = { 0x01, 0x00, 0x5e, 0x00, 0x00, 0x00 };
static const u8 ipv4_mask[ETH_ALEN] = { 0xff, 0xff, 0xff, 0x80, 0x00, 0x00 };
static const u8 ipv6_mcast[ETH_ALEN] = { 0x33, 0x33, 0x00, 0x00, 0x00, 0x00 };
static const u8 ipv6_mask[ETH_ALEN] = { 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 };
/* Rocker priority levels for flow table entries. Higher
* priority match takes precedence over lower priority match.
*/
enum {
OFDPA_PRIORITY_UNKNOWN = 0,
OFDPA_PRIORITY_IG_PORT = 1,
OFDPA_PRIORITY_VLAN = 1,
OFDPA_PRIORITY_TERM_MAC_UCAST = 0,
OFDPA_PRIORITY_TERM_MAC_MCAST = 1,
OFDPA_PRIORITY_BRIDGING_VLAN_DFLT_EXACT = 1,
OFDPA_PRIORITY_BRIDGING_VLAN_DFLT_WILD = 2,
OFDPA_PRIORITY_BRIDGING_VLAN = 3,
OFDPA_PRIORITY_BRIDGING_TENANT_DFLT_EXACT = 1,
OFDPA_PRIORITY_BRIDGING_TENANT_DFLT_WILD = 2,
OFDPA_PRIORITY_BRIDGING_TENANT = 3,
OFDPA_PRIORITY_ACL_CTRL = 3,
OFDPA_PRIORITY_ACL_NORMAL = 2,
OFDPA_PRIORITY_ACL_DFLT = 1,
};
static bool ofdpa_vlan_id_is_internal(__be16 vlan_id)
{
u16 start = OFDPA_INTERNAL_VLAN_ID_BASE;
u16 end = 0xffe;
u16 _vlan_id = ntohs(vlan_id);
return (_vlan_id >= start && _vlan_id <= end);
}
static __be16 ofdpa_port_vid_to_vlan(const struct ofdpa_port *ofdpa_port,
u16 vid, bool *pop_vlan)
{
__be16 vlan_id;
if (pop_vlan)
*pop_vlan = false;
vlan_id = htons(vid);
if (!vlan_id) {
vlan_id = ofdpa_port->internal_vlan_id;
if (pop_vlan)
*pop_vlan = true;
}
return vlan_id;
}
static u16 ofdpa_port_vlan_to_vid(const struct ofdpa_port *ofdpa_port,
__be16 vlan_id)
{
if (ofdpa_vlan_id_is_internal(vlan_id))
return 0;
return ntohs(vlan_id);
}
static bool ofdpa_port_is_slave(const struct ofdpa_port *ofdpa_port,
const char *kind)
{
return ofdpa_port->bridge_dev &&
!strcmp(ofdpa_port->bridge_dev->rtnl_link_ops->kind, kind);
}
static bool ofdpa_port_is_bridged(const struct ofdpa_port *ofdpa_port)
{
return ofdpa_port_is_slave(ofdpa_port, "bridge");
}
static bool ofdpa_port_is_ovsed(const struct ofdpa_port *ofdpa_port)
{
return ofdpa_port_is_slave(ofdpa_port, "openvswitch");
}
#define OFDPA_OP_FLAG_REMOVE BIT(0)
#define OFDPA_OP_FLAG_NOWAIT BIT(1)
#define OFDPA_OP_FLAG_LEARNED BIT(2)
#define OFDPA_OP_FLAG_REFRESH BIT(3)
static bool ofdpa_flags_nowait(int flags)
{
return flags & OFDPA_OP_FLAG_NOWAIT;
}
/*************************************************************
* Flow, group, FDB, internal VLAN and neigh command prepares
*************************************************************/
static int
ofdpa_cmd_flow_tbl_add_ig_port(struct rocker_desc_info *desc_info,
const struct ofdpa_flow_tbl_entry *entry)
{
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
entry->key.ig_port.in_pport))
return -EMSGSIZE;
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
entry->key.ig_port.in_pport_mask))
return -EMSGSIZE;
if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
entry->key.ig_port.goto_tbl))
return -EMSGSIZE;
return 0;
}
static int
ofdpa_cmd_flow_tbl_add_vlan(struct rocker_desc_info *desc_info,
const struct ofdpa_flow_tbl_entry *entry)
{
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
entry->key.vlan.in_pport))
return -EMSGSIZE;
if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
entry->key.vlan.vlan_id))
return -EMSGSIZE;
if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
entry->key.vlan.vlan_id_mask))
return -EMSGSIZE;
if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
entry->key.vlan.goto_tbl))
return -EMSGSIZE;
if (entry->key.vlan.untagged &&
rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_NEW_VLAN_ID,
entry->key.vlan.new_vlan_id))
return -EMSGSIZE;
return 0;
}
static int
ofdpa_cmd_flow_tbl_add_term_mac(struct rocker_desc_info *desc_info,
const struct ofdpa_flow_tbl_entry *entry)
{
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
entry->key.term_mac.in_pport))
return -EMSGSIZE;
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
entry->key.term_mac.in_pport_mask))
return -EMSGSIZE;
if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
entry->key.term_mac.eth_type))
return -EMSGSIZE;
if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
ETH_ALEN, entry->key.term_mac.eth_dst))
return -EMSGSIZE;
if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
ETH_ALEN, entry->key.term_mac.eth_dst_mask))
return -EMSGSIZE;
if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
entry->key.term_mac.vlan_id))
return -EMSGSIZE;
if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
entry->key.term_mac.vlan_id_mask))
return -EMSGSIZE;
if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
entry->key.term_mac.goto_tbl))
return -EMSGSIZE;
if (entry->key.term_mac.copy_to_cpu &&
rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
entry->key.term_mac.copy_to_cpu))
return -EMSGSIZE;
return 0;
}
static int
ofdpa_cmd_flow_tbl_add_ucast_routing(struct rocker_desc_info *desc_info,
const struct ofdpa_flow_tbl_entry *entry)
{
if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
entry->key.ucast_routing.eth_type))
return -EMSGSIZE;
if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP,
entry->key.ucast_routing.dst4))
return -EMSGSIZE;
if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP_MASK,
entry->key.ucast_routing.dst4_mask))
return -EMSGSIZE;
if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
entry->key.ucast_routing.goto_tbl))
return -EMSGSIZE;
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
entry->key.ucast_routing.group_id))
return -EMSGSIZE;
return 0;
}
static int
ofdpa_cmd_flow_tbl_add_bridge(struct rocker_desc_info *desc_info,
const struct ofdpa_flow_tbl_entry *entry)
{
if (entry->key.bridge.has_eth_dst &&
rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
ETH_ALEN, entry->key.bridge.eth_dst))
return -EMSGSIZE;
if (entry->key.bridge.has_eth_dst_mask &&
rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
ETH_ALEN, entry->key.bridge.eth_dst_mask))
return -EMSGSIZE;
if (entry->key.bridge.vlan_id &&
rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
entry->key.bridge.vlan_id))
return -EMSGSIZE;
if (entry->key.bridge.tunnel_id &&
rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_TUNNEL_ID,
entry->key.bridge.tunnel_id))
return -EMSGSIZE;
if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
entry->key.bridge.goto_tbl))
return -EMSGSIZE;
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
entry->key.bridge.group_id))
return -EMSGSIZE;
if (entry->key.bridge.copy_to_cpu &&
rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
entry->key.bridge.copy_to_cpu))
return -EMSGSIZE;
return 0;
}
static int
ofdpa_cmd_flow_tbl_add_acl(struct rocker_desc_info *desc_info,
const struct ofdpa_flow_tbl_entry *entry)
{
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
entry->key.acl.in_pport))
return -EMSGSIZE;
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
entry->key.acl.in_pport_mask))
return -EMSGSIZE;
if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
ETH_ALEN, entry->key.acl.eth_src))
return -EMSGSIZE;
if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC_MASK,
ETH_ALEN, entry->key.acl.eth_src_mask))
return -EMSGSIZE;
if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
ETH_ALEN, entry->key.acl.eth_dst))
return -EMSGSIZE;
if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
ETH_ALEN, entry->key.acl.eth_dst_mask))
return -EMSGSIZE;
if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
entry->key.acl.eth_type))
return -EMSGSIZE;
if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
entry->key.acl.vlan_id))
return -EMSGSIZE;
if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
entry->key.acl.vlan_id_mask))
return -EMSGSIZE;
switch (ntohs(entry->key.acl.eth_type)) {
case ETH_P_IP:
case ETH_P_IPV6:
if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_PROTO,
entry->key.acl.ip_proto))
return -EMSGSIZE;
if (rocker_tlv_put_u8(desc_info,
ROCKER_TLV_OF_DPA_IP_PROTO_MASK,
entry->key.acl.ip_proto_mask))
return -EMSGSIZE;
if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_DSCP,
entry->key.acl.ip_tos & 0x3f))
return -EMSGSIZE;
if (rocker_tlv_put_u8(desc_info,
ROCKER_TLV_OF_DPA_IP_DSCP_MASK,
entry->key.acl.ip_tos_mask & 0x3f))
return -EMSGSIZE;
if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_ECN,
(entry->key.acl.ip_tos & 0xc0) >> 6))
return -EMSGSIZE;
if (rocker_tlv_put_u8(desc_info,
ROCKER_TLV_OF_DPA_IP_ECN_MASK,
(entry->key.acl.ip_tos_mask & 0xc0) >> 6))
return -EMSGSIZE;
break;
}
if (entry->key.acl.group_id != ROCKER_GROUP_NONE &&
rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
entry->key.acl.group_id))
return -EMSGSIZE;
return 0;
}
static int ofdpa_cmd_flow_tbl_add(const struct rocker_port *rocker_port,
struct rocker_desc_info *desc_info,
void *priv)
{
const struct ofdpa_flow_tbl_entry *entry = priv;
struct rocker_tlv *cmd_info;
int err = 0;
if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
return -EMSGSIZE;
cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
if (!cmd_info)
return -EMSGSIZE;
if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_TABLE_ID,
entry->key.tbl_id))
return -EMSGSIZE;
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_PRIORITY,
entry->key.priority))
return -EMSGSIZE;
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_HARDTIME, 0))
return -EMSGSIZE;
if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
entry->cookie))
return -EMSGSIZE;
switch (entry->key.tbl_id) {
case ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT:
err = ofdpa_cmd_flow_tbl_add_ig_port(desc_info, entry);
break;
case ROCKER_OF_DPA_TABLE_ID_VLAN:
err = ofdpa_cmd_flow_tbl_add_vlan(desc_info, entry);
break;
case ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC:
err = ofdpa_cmd_flow_tbl_add_term_mac(desc_info, entry);
break;
case ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING:
err = ofdpa_cmd_flow_tbl_add_ucast_routing(desc_info, entry);
break;
case ROCKER_OF_DPA_TABLE_ID_BRIDGING:
err = ofdpa_cmd_flow_tbl_add_bridge(desc_info, entry);
break;
case ROCKER_OF_DPA_TABLE_ID_ACL_POLICY:
err = ofdpa_cmd_flow_tbl_add_acl(desc_info, entry);
break;
default:
err = -ENOTSUPP;
break;
}
if (err)
return err;
rocker_tlv_nest_end(desc_info, cmd_info);
return 0;
}
static int ofdpa_cmd_flow_tbl_del(const struct rocker_port *rocker_port,
struct rocker_desc_info *desc_info,
void *priv)
{
const struct ofdpa_flow_tbl_entry *entry = priv;
struct rocker_tlv *cmd_info;
if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
return -EMSGSIZE;
cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
if (!cmd_info)
return -EMSGSIZE;
if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
entry->cookie))
return -EMSGSIZE;
rocker_tlv_nest_end(desc_info, cmd_info);
return 0;
}
static int
ofdpa_cmd_group_tbl_add_l2_interface(struct rocker_desc_info *desc_info,
struct ofdpa_group_tbl_entry *entry)
{
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_OUT_PPORT,
ROCKER_GROUP_PORT_GET(entry->group_id)))
return -EMSGSIZE;
if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_POP_VLAN,
entry->l2_interface.pop_vlan))
return -EMSGSIZE;
return 0;
}
static int
ofdpa_cmd_group_tbl_add_l2_rewrite(struct rocker_desc_info *desc_info,
const struct ofdpa_group_tbl_entry *entry)
{
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
entry->l2_rewrite.group_id))
return -EMSGSIZE;
if (!is_zero_ether_addr(entry->l2_rewrite.eth_src) &&
rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
ETH_ALEN, entry->l2_rewrite.eth_src))
return -EMSGSIZE;
if (!is_zero_ether_addr(entry->l2_rewrite.eth_dst) &&
rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
ETH_ALEN, entry->l2_rewrite.eth_dst))
return -EMSGSIZE;
if (entry->l2_rewrite.vlan_id &&
rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
entry->l2_rewrite.vlan_id))
return -EMSGSIZE;
return 0;
}
static int
ofdpa_cmd_group_tbl_add_group_ids(struct rocker_desc_info *desc_info,
const struct ofdpa_group_tbl_entry *entry)
{
int i;
struct rocker_tlv *group_ids;
if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GROUP_COUNT,
entry->group_count))
return -EMSGSIZE;
group_ids = rocker_tlv_nest_start(desc_info,
ROCKER_TLV_OF_DPA_GROUP_IDS);
if (!group_ids)
return -EMSGSIZE;
for (i = 0; i < entry->group_count; i++)
/* Note TLV array is 1-based */
if (rocker_tlv_put_u32(desc_info, i + 1, entry->group_ids[i]))
return -EMSGSIZE;
rocker_tlv_nest_end(desc_info, group_ids);
return 0;
}
static int
ofdpa_cmd_group_tbl_add_l3_unicast(struct rocker_desc_info *desc_info,
const struct ofdpa_group_tbl_entry *entry)
{
if (!is_zero_ether_addr(entry->l3_unicast.eth_src) &&
rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
ETH_ALEN, entry->l3_unicast.eth_src))
return -EMSGSIZE;
if (!is_zero_ether_addr(entry->l3_unicast.eth_dst) &&
rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
ETH_ALEN, entry->l3_unicast.eth_dst))
return -EMSGSIZE;
if (entry->l3_unicast.vlan_id &&
rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
entry->l3_unicast.vlan_id))
return -EMSGSIZE;
if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_TTL_CHECK,
entry->l3_unicast.ttl_check))
return -EMSGSIZE;
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
entry->l3_unicast.group_id))
return -EMSGSIZE;
return 0;
}
static int ofdpa_cmd_group_tbl_add(const struct rocker_port *rocker_port,
struct rocker_desc_info *desc_info,
void *priv)
{
struct ofdpa_group_tbl_entry *entry = priv;
struct rocker_tlv *cmd_info;
int err = 0;
if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
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_OF_DPA_GROUP_ID,
entry->group_id))
return -EMSGSIZE;
switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
case ROCKER_OF_DPA_GROUP_TYPE_L2_INTERFACE:
err = ofdpa_cmd_group_tbl_add_l2_interface(desc_info, entry);
break;
case ROCKER_OF_DPA_GROUP_TYPE_L2_REWRITE:
err = ofdpa_cmd_group_tbl_add_l2_rewrite(desc_info, entry);
break;
case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
err = ofdpa_cmd_group_tbl_add_group_ids(desc_info, entry);
break;
case ROCKER_OF_DPA_GROUP_TYPE_L3_UCAST:
err = ofdpa_cmd_group_tbl_add_l3_unicast(desc_info, entry);
break;
default:
err = -ENOTSUPP;
break;
}
if (err)
return err;
rocker_tlv_nest_end(desc_info, cmd_info);
return 0;
}
static int ofdpa_cmd_group_tbl_del(const struct rocker_port *rocker_port,
struct rocker_desc_info *desc_info,
void *priv)
{
const struct ofdpa_group_tbl_entry *entry = priv;
struct rocker_tlv *cmd_info;
if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
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_OF_DPA_GROUP_ID,
entry->group_id))
return -EMSGSIZE;
rocker_tlv_nest_end(desc_info, cmd_info);
return 0;
}
/***************************************************
* Flow, group, FDB, internal VLAN and neigh tables
***************************************************/
static struct ofdpa_flow_tbl_entry *
ofdpa_flow_tbl_find(const struct ofdpa *ofdpa,
const struct ofdpa_flow_tbl_entry *match)
{
struct ofdpa_flow_tbl_entry *found;
size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
hash_for_each_possible(ofdpa->flow_tbl, found,
entry, match->key_crc32) {
if (memcmp(&found->key, &match->key, key_len) == 0)
return found;
}
return NULL;
}
static int ofdpa_flow_tbl_add(struct ofdpa_port *ofdpa_port,
int flags, struct ofdpa_flow_tbl_entry *match)
{
struct ofdpa *ofdpa = ofdpa_port->ofdpa;
struct ofdpa_flow_tbl_entry *found;
size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
unsigned long lock_flags;
match->key_crc32 = crc32(~0, &match->key, key_len);
spin_lock_irqsave(&ofdpa->flow_tbl_lock, lock_flags);
found = ofdpa_flow_tbl_find(ofdpa, match);
if (found) {
match->cookie = found->cookie;
hash_del(&found->entry);
kfree(found);
found = match;
found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_MOD;
} else {
found = match;
found->cookie = ofdpa->flow_tbl_next_cookie++;
found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_ADD;
}
hash_add(ofdpa->flow_tbl, &found->entry, found->key_crc32);
spin_unlock_irqrestore(&ofdpa->flow_tbl_lock, lock_flags);
return rocker_cmd_exec(ofdpa_port->rocker_port,
ofdpa_flags_nowait(flags),
ofdpa_cmd_flow_tbl_add,
found, NULL, NULL);
}
static int ofdpa_flow_tbl_del(struct ofdpa_port *ofdpa_port,
int flags, struct ofdpa_flow_tbl_entry *match)
{
struct ofdpa *ofdpa = ofdpa_port->ofdpa;
struct ofdpa_flow_tbl_entry *found;
size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
unsigned long lock_flags;
int err = 0;
match->key_crc32 = crc32(~0, &match->key, key_len);
spin_lock_irqsave(&ofdpa->flow_tbl_lock, lock_flags);
found = ofdpa_flow_tbl_find(ofdpa, match);
if (found) {
hash_del(&found->entry);
found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_DEL;
}
spin_unlock_irqrestore(&ofdpa->flow_tbl_lock, lock_flags);
kfree(match);
if (found) {
err = rocker_cmd_exec(ofdpa_port->rocker_port,
ofdpa_flags_nowait(flags),
ofdpa_cmd_flow_tbl_del,
found, NULL, NULL);
kfree(found);
}
return err;
}
static int ofdpa_flow_tbl_do(struct ofdpa_port *ofdpa_port, int flags,
struct ofdpa_flow_tbl_entry *entry)
{
if (flags & OFDPA_OP_FLAG_REMOVE)
return ofdpa_flow_tbl_del(ofdpa_port, flags, entry);
else
return ofdpa_flow_tbl_add(ofdpa_port, flags, entry);
}
static int ofdpa_flow_tbl_ig_port(struct ofdpa_port *ofdpa_port, int flags,
u32 in_pport, u32 in_pport_mask,
enum rocker_of_dpa_table_id goto_tbl)
{
struct ofdpa_flow_tbl_entry *entry;
entry = kzalloc(sizeof(*entry), GFP_KERNEL);
if (!entry)
return -ENOMEM;
entry->key.priority = OFDPA_PRIORITY_IG_PORT;
entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT;
entry->key.ig_port.in_pport = in_pport;
entry->key.ig_port.in_pport_mask = in_pport_mask;
entry->key.ig_port.goto_tbl = goto_tbl;
return ofdpa_flow_tbl_do(ofdpa_port, flags, entry);
}
static int ofdpa_flow_tbl_vlan(struct ofdpa_port *ofdpa_port,
int flags,
u32 in_pport, __be16 vlan_id,
__be16 vlan_id_mask,
enum rocker_of_dpa_table_id goto_tbl,
bool untagged, __be16 new_vlan_id)
{
struct ofdpa_flow_tbl_entry *entry;
entry = kzalloc(sizeof(*entry), GFP_KERNEL);
if (!entry)
return -ENOMEM;
entry->key.priority = OFDPA_PRIORITY_VLAN;
entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_VLAN;
entry->key.vlan.in_pport = in_pport;
entry->key.vlan.vlan_id = vlan_id;
entry->key.vlan.vlan_id_mask = vlan_id_mask;
entry->key.vlan.goto_tbl = goto_tbl;
entry->key.vlan.untagged = untagged;
entry->key.vlan.new_vlan_id = new_vlan_id;
return ofdpa_flow_tbl_do(ofdpa_port, flags, entry);
}
static int ofdpa_flow_tbl_term_mac(struct ofdpa_port *ofdpa_port,
u32 in_pport, u32 in_pport_mask,
__be16 eth_type, const u8 *eth_dst,
const u8 *eth_dst_mask, __be16 vlan_id,
__be16 vlan_id_mask, bool copy_to_cpu,
int flags)
{
struct ofdpa_flow_tbl_entry *entry;
entry = kzalloc(sizeof(*entry), GFP_KERNEL);
if (!entry)
return -ENOMEM;
if (is_multicast_ether_addr(eth_dst)) {
entry->key.priority = OFDPA_PRIORITY_TERM_MAC_MCAST;
entry->key.term_mac.goto_tbl =
ROCKER_OF_DPA_TABLE_ID_MULTICAST_ROUTING;
} else {
entry->key.priority = OFDPA_PRIORITY_TERM_MAC_UCAST;
entry->key.term_mac.goto_tbl =
ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
}
entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
entry->key.term_mac.in_pport = in_pport;
entry->key.term_mac.in_pport_mask = in_pport_mask;
entry->key.term_mac.eth_type = eth_type;
ether_addr_copy(entry->key.term_mac.eth_dst, eth_dst);
ether_addr_copy(entry->key.term_mac.eth_dst_mask, eth_dst_mask);
entry->key.term_mac.vlan_id = vlan_id;
entry->key.term_mac.vlan_id_mask = vlan_id_mask;
entry->key.term_mac.copy_to_cpu = copy_to_cpu;
return ofdpa_flow_tbl_do(ofdpa_port, flags, entry);
}
static int ofdpa_flow_tbl_bridge(struct ofdpa_port *ofdpa_port,
int flags, const u8 *eth_dst,
const u8 *eth_dst_mask, __be16 vlan_id,
u32 tunnel_id,
enum rocker_of_dpa_table_id goto_tbl,
u32 group_id, bool copy_to_cpu)
{
struct ofdpa_flow_tbl_entry *entry;
u32 priority;
bool vlan_bridging = !!vlan_id;
bool dflt = !eth_dst || eth_dst_mask;
bool wild = false;
entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
if (!entry)
return -ENOMEM;
entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_BRIDGING;
if (eth_dst) {
entry->key.bridge.has_eth_dst = 1;
ether_addr_copy(entry->key.bridge.eth_dst, eth_dst);
}
if (eth_dst_mask) {
entry->key.bridge.has_eth_dst_mask = 1;
ether_addr_copy(entry->key.bridge.eth_dst_mask, eth_dst_mask);
if (!ether_addr_equal(eth_dst_mask, ff_mac))
wild = true;
}
priority = OFDPA_PRIORITY_UNKNOWN;
if (vlan_bridging && dflt && wild)
priority = OFDPA_PRIORITY_BRIDGING_VLAN_DFLT_WILD;
else if (vlan_bridging && dflt && !wild)
priority = OFDPA_PRIORITY_BRIDGING_VLAN_DFLT_EXACT;
else if (vlan_bridging && !dflt)
priority = OFDPA_PRIORITY_BRIDGING_VLAN;
else if (!vlan_bridging && dflt && wild)
priority = OFDPA_PRIORITY_BRIDGING_TENANT_DFLT_WILD;
else if (!vlan_bridging && dflt && !wild)
priority = OFDPA_PRIORITY_BRIDGING_TENANT_DFLT_EXACT;
else if (!vlan_bridging && !dflt)
priority = OFDPA_PRIORITY_BRIDGING_TENANT;
entry->key.priority = priority;
entry->key.bridge.vlan_id = vlan_id;
entry->key.bridge.tunnel_id = tunnel_id;
entry->key.bridge.goto_tbl = goto_tbl;
entry->key.bridge.group_id = group_id;
entry->key.bridge.copy_to_cpu = copy_to_cpu;
return ofdpa_flow_tbl_do(ofdpa_port, flags, entry);
}
static int ofdpa_flow_tbl_ucast4_routing(struct ofdpa_port *ofdpa_port,
__be16 eth_type, __be32 dst,
__be32 dst_mask, u32 priority,
enum rocker_of_dpa_table_id goto_tbl,
u32 group_id, struct fib_info *fi,
int flags)
{
struct ofdpa_flow_tbl_entry *entry;
entry = kzalloc(sizeof(*entry), GFP_KERNEL);
if (!entry)
return -ENOMEM;
entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
entry->key.priority = priority;
entry->key.ucast_routing.eth_type = eth_type;
entry->key.ucast_routing.dst4 = dst;
entry->key.ucast_routing.dst4_mask = dst_mask;
entry->key.ucast_routing.goto_tbl = goto_tbl;
entry->key.ucast_routing.group_id = group_id;
entry->key_len = offsetof(struct ofdpa_flow_tbl_key,
ucast_routing.group_id);
entry->fi = fi;
return ofdpa_flow_tbl_do(ofdpa_port, flags, entry);
}
static int ofdpa_flow_tbl_acl(struct ofdpa_port *ofdpa_port, int flags,
u32 in_pport, u32 in_pport_mask,
const u8 *eth_src, const u8 *eth_src_mask,
const u8 *eth_dst, const u8 *eth_dst_mask,
__be16 eth_type, __be16 vlan_id,
__be16 vlan_id_mask, u8 ip_proto,
u8 ip_proto_mask, u8 ip_tos, u8 ip_tos_mask,
u32 group_id)
{
u32 priority;
struct ofdpa_flow_tbl_entry *entry;
entry = kzalloc(sizeof(*entry), GFP_KERNEL);
if (!entry)
return -ENOMEM;
priority = OFDPA_PRIORITY_ACL_NORMAL;
if (eth_dst && eth_dst_mask) {
if (ether_addr_equal(eth_dst_mask, mcast_mac))
priority = OFDPA_PRIORITY_ACL_DFLT;
else if (is_link_local_ether_addr(eth_dst))
priority = OFDPA_PRIORITY_ACL_CTRL;
}
entry->key.priority = priority;
entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
entry->key.acl.in_pport = in_pport;
entry->key.acl.in_pport_mask = in_pport_mask;
if (eth_src)
ether_addr_copy(entry->key.acl.eth_src, eth_src);
if (eth_src_mask)
ether_addr_copy(entry->key.acl.eth_src_mask, eth_src_mask);
if (eth_dst)
ether_addr_copy(entry->key.acl.eth_dst, eth_dst);
if (eth_dst_mask)
ether_addr_copy(entry->key.acl.eth_dst_mask, eth_dst_mask);
entry->key.acl.eth_type = eth_type;
entry->key.acl.vlan_id = vlan_id;
entry->key.acl.vlan_id_mask = vlan_id_mask;
entry->key.acl.ip_proto = ip_proto;
entry->key.acl.ip_proto_mask = ip_proto_mask;
entry->key.acl.ip_tos = ip_tos;
entry->key.acl.ip_tos_mask = ip_tos_mask;
entry->key.acl.group_id = group_id;
return ofdpa_flow_tbl_do(ofdpa_port, flags, entry);
}
static struct ofdpa_group_tbl_entry *
ofdpa_group_tbl_find(const struct ofdpa *ofdpa,
const struct ofdpa_group_tbl_entry *match)
{
struct ofdpa_group_tbl_entry *found;
hash_for_each_possible(ofdpa->group_tbl, found,
entry, match->group_id) {
if (found->group_id == match->group_id)
return found;
}
return NULL;
}
static void ofdpa_group_tbl_entry_free(struct ofdpa_group_tbl_entry *entry)
{
switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
kfree(entry->group_ids);
break;
default:
break;
}
kfree(entry);
}
static int ofdpa_group_tbl_add(struct ofdpa_port *ofdpa_port, int flags,
struct ofdpa_group_tbl_entry *match)
{
struct ofdpa *ofdpa = ofdpa_port->ofdpa;
struct ofdpa_group_tbl_entry *found;
unsigned long lock_flags;
spin_lock_irqsave(&ofdpa->group_tbl_lock, lock_flags);
found = ofdpa_group_tbl_find(ofdpa, match);
if (found) {
hash_del(&found->entry);
ofdpa_group_tbl_entry_free(found);
found = match;
found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_MOD;
} else {
found = match;
found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_ADD;
}
hash_add(ofdpa->group_tbl, &found->entry, found->group_id);
spin_unlock_irqrestore(&ofdpa->group_tbl_lock, lock_flags);
return rocker_cmd_exec(ofdpa_port->rocker_port,
ofdpa_flags_nowait(flags),
ofdpa_cmd_group_tbl_add,
found, NULL, NULL);
}
static int ofdpa_group_tbl_del(struct ofdpa_port *ofdpa_port, int flags,
struct ofdpa_group_tbl_entry *match)
{
struct ofdpa *ofdpa = ofdpa_port->ofdpa;
struct ofdpa_group_tbl_entry *found;
unsigned long lock_flags;
int err = 0;
spin_lock_irqsave(&ofdpa->group_tbl_lock, lock_flags);
found = ofdpa_group_tbl_find(ofdpa, match);
if (found) {
hash_del(&found->entry);
found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_DEL;
}
spin_unlock_irqrestore(&ofdpa->group_tbl_lock, lock_flags);
ofdpa_group_tbl_entry_free(match);
if (found) {
err = rocker_cmd_exec(ofdpa_port->rocker_port,
ofdpa_flags_nowait(flags),
ofdpa_cmd_group_tbl_del,
found, NULL, NULL);
ofdpa_group_tbl_entry_free(found);
}
return err;
}
static int ofdpa_group_tbl_do(struct ofdpa_port *ofdpa_port, int flags,
struct ofdpa_group_tbl_entry *entry)
{
if (flags & OFDPA_OP_FLAG_REMOVE)
return ofdpa_group_tbl_del(ofdpa_port, flags, entry);
else
return ofdpa_group_tbl_add(ofdpa_port, flags, entry);
}
static int ofdpa_group_l2_interface(struct ofdpa_port *ofdpa_port,
int flags, __be16 vlan_id,
u32 out_pport, int pop_vlan)
{
struct ofdpa_group_tbl_entry *entry;
entry = kzalloc(sizeof(*entry), GFP_KERNEL);
if (!entry)
return -ENOMEM;
entry->group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
entry->l2_interface.pop_vlan = pop_vlan;
return ofdpa_group_tbl_do(ofdpa_port, flags, entry);
}
static int ofdpa_group_l2_fan_out(struct ofdpa_port *ofdpa_port,
int flags, u8 group_count,
const u32 *group_ids, u32 group_id)
{
struct ofdpa_group_tbl_entry *entry;
entry = kzalloc(sizeof(*entry), GFP_KERNEL);
if (!entry)
return -ENOMEM;
entry->group_id = group_id;
entry->group_count = group_count;
entry->group_ids = kcalloc(group_count, sizeof(u32), GFP_KERNEL);
if (!entry->group_ids) {
kfree(entry);
return -ENOMEM;
}
memcpy(entry->group_ids, group_ids, group_count * sizeof(u32));
return ofdpa_group_tbl_do(ofdpa_port, flags, entry);
}
static int ofdpa_group_l2_flood(struct ofdpa_port *ofdpa_port,
int flags, __be16 vlan_id,
u8 group_count, const u32 *group_ids,
u32 group_id)
{
return ofdpa_group_l2_fan_out(ofdpa_port, flags,
group_count, group_ids,
group_id);
}
static int ofdpa_group_l3_unicast(struct ofdpa_port *ofdpa_port, int flags,
u32 index, const u8 *src_mac, const u8 *dst_mac,
__be16 vlan_id, bool ttl_check, u32 pport)
{
struct ofdpa_group_tbl_entry *entry;
entry = kzalloc(sizeof(*entry), GFP_KERNEL);
if (!entry)
return -ENOMEM;
entry->group_id = ROCKER_GROUP_L3_UNICAST(index);
if (src_mac)
ether_addr_copy(entry->l3_unicast.eth_src, src_mac);
if (dst_mac)
ether_addr_copy(entry->l3_unicast.eth_dst, dst_mac);
entry->l3_unicast.vlan_id = vlan_id;
entry->l3_unicast.ttl_check = ttl_check;
entry->l3_unicast.group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, pport);
return ofdpa_group_tbl_do(ofdpa_port, flags, entry);
}
static struct ofdpa_neigh_tbl_entry *
ofdpa_neigh_tbl_find(const struct ofdpa *ofdpa, __be32 ip_addr)
{
struct ofdpa_neigh_tbl_entry *found;
hash_for_each_possible(ofdpa->neigh_tbl, found,
entry, be32_to_cpu(ip_addr))
if (found->ip_addr == ip_addr)
return found;
return NULL;
}
static void ofdpa_neigh_add(struct ofdpa *ofdpa,
struct ofdpa_neigh_tbl_entry *entry)
{
entry->index = ofdpa->neigh_tbl_next_index++;
entry->ref_count++;
hash_add(ofdpa->neigh_tbl, &entry->entry,
be32_to_cpu(entry->ip_addr));
}
static void ofdpa_neigh_del(struct ofdpa_neigh_tbl_entry *entry)
{
if (--entry->ref_count == 0) {
hash_del(&entry->entry);
kfree(entry);
}
}
static void ofdpa_neigh_update(struct ofdpa_neigh_tbl_entry *entry,
const u8 *eth_dst, bool ttl_check)
{
if (eth_dst) {
ether_addr_copy(entry->eth_dst, eth_dst);
entry->ttl_check = ttl_check;
} else {
entry->ref_count++;
}
}
static int ofdpa_port_ipv4_neigh(struct ofdpa_port *ofdpa_port,
int flags, __be32 ip_addr, const u8 *eth_dst)
{
struct ofdpa *ofdpa = ofdpa_port->ofdpa;
struct ofdpa_neigh_tbl_entry *entry;
struct ofdpa_neigh_tbl_entry *found;
unsigned long lock_flags;
__be16 eth_type = htons(ETH_P_IP);
enum rocker_of_dpa_table_id goto_tbl =
ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
u32 group_id;
u32 priority = 0;
bool adding = !(flags & OFDPA_OP_FLAG_REMOVE);
bool updating;
bool removing;
int err = 0;
entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
if (!entry)
return -ENOMEM;
spin_lock_irqsave(&ofdpa->neigh_tbl_lock, lock_flags);
found = ofdpa_neigh_tbl_find(ofdpa, ip_addr);
updating = found && adding;
removing = found && !adding;
adding = !found && adding;
if (adding) {
entry->ip_addr = ip_addr;
entry->dev = ofdpa_port->dev;
ether_addr_copy(entry->eth_dst, eth_dst);
entry->ttl_check = true;
ofdpa_neigh_add(ofdpa, entry);
} else if (removing) {
memcpy(entry, found, sizeof(*entry));
ofdpa_neigh_del(found);
} else if (updating) {
ofdpa_neigh_update(found, eth_dst, true);
memcpy(entry, found, sizeof(*entry));
} else {
err = -ENOENT;
}
spin_unlock_irqrestore(&ofdpa->neigh_tbl_lock, lock_flags);
if (err)
goto err_out;
/* For each active neighbor, we have an L3 unicast group and
* a /32 route to the neighbor, which uses the L3 unicast
* group. The L3 unicast group can also be referred to by
* other routes' nexthops.
*/
err = ofdpa_group_l3_unicast(ofdpa_port, flags,
entry->index,
ofdpa_port->dev->dev_addr,
entry->eth_dst,
ofdpa_port->internal_vlan_id,
entry->ttl_check,
ofdpa_port->pport);
if (err) {
netdev_err(ofdpa_port->dev, "Error (%d) L3 unicast group index %d\n",
err, entry->index);
goto err_out;
}
if (adding || removing) {
group_id = ROCKER_GROUP_L3_UNICAST(entry->index);
err = ofdpa_flow_tbl_ucast4_routing(ofdpa_port,
eth_type, ip_addr,
inet_make_mask(32),
priority, goto_tbl,
group_id, NULL, flags);
if (err)
netdev_err(ofdpa_port->dev, "Error (%d) /32 unicast route %pI4 group 0x%08x\n",
err, &entry->ip_addr, group_id);
}
err_out:
if (!adding)
kfree(entry);
return err;
}
static int ofdpa_port_ipv4_resolve(struct ofdpa_port *ofdpa_port,
__be32 ip_addr)
{
struct net_device *dev = ofdpa_port->dev;
struct neighbour *n = __ipv4_neigh_lookup(dev, (__force u32)ip_addr);
int err = 0;
if (!n) {
n = neigh_create(&arp_tbl, &ip_addr, dev);
if (IS_ERR(n))
return PTR_ERR(n);
}
/* If the neigh is already resolved, then go ahead and
* install the entry, otherwise start the ARP process to
* resolve the neigh.
*/
if (n->nud_state & NUD_VALID)
err = ofdpa_port_ipv4_neigh(ofdpa_port, 0,
ip_addr, n->ha);
else
neigh_event_send(n, NULL);
neigh_release(n);
return err;
}
static int ofdpa_port_ipv4_nh(struct ofdpa_port *ofdpa_port,
int flags, __be32 ip_addr, u32 *index)
{
struct ofdpa *ofdpa = ofdpa_port->ofdpa;
struct ofdpa_neigh_tbl_entry *entry;
struct ofdpa_neigh_tbl_entry *found;
unsigned long lock_flags;
bool adding = !(flags & OFDPA_OP_FLAG_REMOVE);
bool updating;
bool removing;
bool resolved = true;
int err = 0;
entry = kzalloc(sizeof(*entry), GFP_KERNEL);
if (!entry)
return -ENOMEM;
spin_lock_irqsave(&ofdpa->neigh_tbl_lock, lock_flags);
found = ofdpa_neigh_tbl_find(ofdpa, ip_addr);
updating = found && adding;
removing = found && !adding;
adding = !found && adding;
if (adding) {
entry->ip_addr = ip_addr;
entry->dev = ofdpa_port->dev;
ofdpa_neigh_add(ofdpa, entry);
*index = entry->index;
resolved = false;
} else if (removing) {
*index = found->index;
ofdpa_neigh_del(found);
} else if (updating) {
ofdpa_neigh_update(found, NULL, false);
resolved = !is_zero_ether_addr(found->eth_dst);
*index = found->index;
} else {
err = -ENOENT;
}
spin_unlock_irqrestore(&ofdpa->neigh_tbl_lock, lock_flags);
if (!adding)
kfree(entry);
if (err)
return err;
/* Resolved means neigh ip_addr is resolved to neigh mac. */
if (!resolved)
err = ofdpa_port_ipv4_resolve(ofdpa_port, ip_addr);
return err;
}
static struct ofdpa_port *ofdpa_port_get(const struct ofdpa *ofdpa,
int port_index)
{
struct rocker_port *rocker_port;
rocker_port = ofdpa->rocker->ports[port_index];
return rocker_port ? rocker_port->wpriv : NULL;
}
static int ofdpa_port_vlan_flood_group(struct ofdpa_port *ofdpa_port,
int flags, __be16 vlan_id)
{
struct ofdpa_port *p;
const struct ofdpa *ofdpa = ofdpa_port->ofdpa;
unsigned int port_count = ofdpa->rocker->port_count;
u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
u32 *group_ids;
u8 group_count = 0;
int err = 0;
int i;
group_ids = kcalloc(port_count, sizeof(u32), GFP_KERNEL);
if (!group_ids)
return -ENOMEM;
/* Adjust the flood group for this VLAN. The flood group
* references an L2 interface group for each port in this
* VLAN.
*/
for (i = 0; i < port_count; i++) {
p = ofdpa_port_get(ofdpa, i);
if (!p)
continue;
if (!ofdpa_port_is_bridged(p))
continue;
if (test_bit(ntohs(vlan_id), p->vlan_bitmap)) {
group_ids[group_count++] =
ROCKER_GROUP_L2_INTERFACE(vlan_id, p->pport);
}
}
/* If there are no bridged ports in this VLAN, we're done */
if (group_count == 0)
goto no_ports_in_vlan;
err = ofdpa_group_l2_flood(ofdpa_port, flags, vlan_id,
group_count, group_ids, group_id);
if (err)
netdev_err(ofdpa_port->dev, "Error (%d) port VLAN l2 flood group\n", err);
no_ports_in_vlan:
kfree(group_ids);
return err;
}
static int ofdpa_port_vlan_l2_groups(struct ofdpa_port *ofdpa_port, int flags,
__be16 vlan_id, bool pop_vlan)
{
const struct ofdpa *ofdpa = ofdpa_port->ofdpa;
unsigned int port_count = ofdpa->rocker->port_count;
struct ofdpa_port *p;
bool adding = !(flags & OFDPA_OP_FLAG_REMOVE);
u32 out_pport;
int ref = 0;
int err;
int i;
/* An L2 interface group for this port in this VLAN, but
* only when port STP state is LEARNING|FORWARDING.
*/
if (ofdpa_port->stp_state == BR_STATE_LEARNING ||
ofdpa_port->stp_state == BR_STATE_FORWARDING) {
out_pport = ofdpa_port->pport;
err = ofdpa_group_l2_interface(ofdpa_port, flags,
vlan_id, out_pport, pop_vlan);
if (err) {
netdev_err(ofdpa_port->dev, "Error (%d) port VLAN l2 group for pport %d\n",
err, out_pport);
return err;
}
}
/* An L2 interface group for this VLAN to CPU port.
* Add when first port joins this VLAN and destroy when
* last port leaves this VLAN.
*/
for (i = 0; i < port_count; i++) {
p = ofdpa_port_get(ofdpa, i);
if (p && test_bit(ntohs(vlan_id), p->vlan_bitmap))
ref++;
}
if ((!adding || ref != 1) && (adding || ref != 0))
return 0;
out_pport = 0;
err = ofdpa_group_l2_interface(ofdpa_port, flags,
vlan_id, out_pport, pop_vlan);
if (err) {
netdev_err(ofdpa_port->dev, "Error (%d) port VLAN l2 group for CPU port\n", err);
return err;
}
return 0;
}
static struct ofdpa_ctrl {
const u8 *eth_dst;
const u8 *eth_dst_mask;
__be16 eth_type;
bool acl;
bool bridge;
bool term;
bool copy_to_cpu;
} ofdpa_ctrls[] = {
[OFDPA_CTRL_LINK_LOCAL_MCAST] = {
/* pass link local multicast pkts up to CPU for filtering */
.eth_dst = ll_mac,
.eth_dst_mask = ll_mask,
.acl = true,
},
[OFDPA_CTRL_LOCAL_ARP] = {
/* pass local ARP pkts up to CPU */
.eth_dst = zero_mac,
.eth_dst_mask = zero_mac,
.eth_type = htons(ETH_P_ARP),
.acl = true,
},
[OFDPA_CTRL_IPV4_MCAST] = {
/* pass IPv4 mcast pkts up to CPU, RFC 1112 */
.eth_dst = ipv4_mcast,
.eth_dst_mask = ipv4_mask,
.eth_type = htons(ETH_P_IP),
.term = true,
.copy_to_cpu = true,
},
[OFDPA_CTRL_IPV6_MCAST] = {
/* pass IPv6 mcast pkts up to CPU, RFC 2464 */
.eth_dst = ipv6_mcast,
.eth_dst_mask = ipv6_mask,
.eth_type = htons(ETH_P_IPV6),
.term = true,
.copy_to_cpu = true,
},
[OFDPA_CTRL_DFLT_BRIDGING] = {
/* flood any pkts on vlan */
.bridge = true,
.copy_to_cpu = true,
},
[OFDPA_CTRL_DFLT_OVS] = {
/* pass all pkts up to CPU */
.eth_dst = zero_mac,
.eth_dst_mask = zero_mac,
.acl = true,
},
};
static int ofdpa_port_ctrl_vlan_acl(struct ofdpa_port *ofdpa_port, int flags,
const struct ofdpa_ctrl *ctrl, __be16 vlan_id)
{
u32 in_pport = ofdpa_port->pport;
u32 in_pport_mask = 0xffffffff;
u32 out_pport = 0;
const u8 *eth_src = NULL;
const u8 *eth_src_mask = NULL;
__be16 vlan_id_mask = htons(0xffff);
u8 ip_proto = 0;
u8 ip_proto_mask = 0;
u8 ip_tos = 0;
u8 ip_tos_mask = 0;
u32 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
int err;
err = ofdpa_flow_tbl_acl(ofdpa_port, flags,
in_pport, in_pport_mask,
eth_src, eth_src_mask,
ctrl->eth_dst, ctrl->eth_dst_mask,
ctrl->eth_type,
vlan_id, vlan_id_mask,
ip_proto, ip_proto_mask,
ip_tos, ip_tos_mask,
group_id);
if (err)
netdev_err(ofdpa_port->dev, "Error (%d) ctrl ACL\n", err);
return err;
}
static int ofdpa_port_ctrl_vlan_bridge(struct ofdpa_port *ofdpa_port,
int flags, const struct ofdpa_ctrl *ctrl,
__be16 vlan_id)
{
enum rocker_of_dpa_table_id goto_tbl =
ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
u32 tunnel_id = 0;
int err;
if (!ofdpa_port_is_bridged(ofdpa_port))
return 0;
err = ofdpa_flow_tbl_bridge(ofdpa_port, flags,
ctrl->eth_dst, ctrl->eth_dst_mask,
vlan_id, tunnel_id,
goto_tbl, group_id, ctrl->copy_to_cpu);
if (err)
netdev_err(ofdpa_port->dev, "Error (%d) ctrl FLOOD\n", err);
return err;
}
static int ofdpa_port_ctrl_vlan_term(struct ofdpa_port *ofdpa_port, int flags,
const struct ofdpa_ctrl *ctrl, __be16 vlan_id)
{
u32 in_pport_mask = 0xffffffff;
__be16 vlan_id_mask = htons(0xffff);
int err;
if (ntohs(vlan_id) == 0)
vlan_id = ofdpa_port->internal_vlan_id;
err = ofdpa_flow_tbl_term_mac(ofdpa_port, ofdpa_port->pport, in_pport_mask,
ctrl->eth_type, ctrl->eth_dst,
ctrl->eth_dst_mask, vlan_id,
vlan_id_mask, ctrl->copy_to_cpu,
flags);
if (err)
netdev_err(ofdpa_port->dev, "Error (%d) ctrl term\n", err);
return err;
}
static int ofdpa_port_ctrl_vlan(struct ofdpa_port *ofdpa_port, int flags,
const struct ofdpa_ctrl *ctrl, __be16 vlan_id)
{
if (ctrl->acl)
return ofdpa_port_ctrl_vlan_acl(ofdpa_port, flags,
ctrl, vlan_id);
if (ctrl->bridge)
return ofdpa_port_ctrl_vlan_bridge(ofdpa_port, flags,
ctrl, vlan_id);
if (ctrl->term)
return ofdpa_port_ctrl_vlan_term(ofdpa_port, flags,
ctrl, vlan_id);
return -EOPNOTSUPP;
}
static int ofdpa_port_ctrl_vlan_add(struct ofdpa_port *ofdpa_port, int flags,
__be16 vlan_id)
{
int err = 0;
int i;
for (i = 0; i < OFDPA_CTRL_MAX; i++) {
if (ofdpa_port->ctrls[i]) {
err = ofdpa_port_ctrl_vlan(ofdpa_port, flags,
&ofdpa_ctrls[i], vlan_id);
if (err)
return err;
}
}
return err;
}
static int ofdpa_port_ctrl(struct ofdpa_port *ofdpa_port, int flags,
const struct ofdpa_ctrl *ctrl)
{
u16 vid;
int err = 0;
for (vid = 1; vid < VLAN_N_VID; vid++) {
if (!test_bit(vid, ofdpa_port->vlan_bitmap))
continue;
err = ofdpa_port_ctrl_vlan(ofdpa_port, flags,
ctrl, htons(vid));
if (err)
break;
}
return err;
}
static int ofdpa_port_vlan(struct ofdpa_port *ofdpa_port, int flags,
u16 vid)
{
enum rocker_of_dpa_table_id goto_tbl =
ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
u32 in_pport = ofdpa_port->pport;
__be16 vlan_id = htons(vid);
__be16 vlan_id_mask = htons(0xffff);
__be16 internal_vlan_id;
bool untagged;
bool adding = !(flags & OFDPA_OP_FLAG_REMOVE);
int err;
internal_vlan_id = ofdpa_port_vid_to_vlan(ofdpa_port, vid, &untagged);
if (adding &&
test_bit(ntohs(internal_vlan_id), ofdpa_port->vlan_bitmap))
return 0; /* already added */
else if (!adding &&
!test_bit(ntohs(internal_vlan_id), ofdpa_port->vlan_bitmap))
return 0; /* already removed */
change_bit(ntohs(internal_vlan_id), ofdpa_port->vlan_bitmap);
if (adding) {
err = ofdpa_port_ctrl_vlan_add(ofdpa_port, flags,
internal_vlan_id);
if (err) {
netdev_err(ofdpa_port->dev, "Error (%d) port ctrl vlan add\n", err);
goto err_vlan_add;
}
}
err = ofdpa_port_vlan_l2_groups(ofdpa_port, flags,
internal_vlan_id, untagged);
if (err) {
netdev_err(ofdpa_port->dev, "Error (%d) port VLAN l2 groups\n", err);
goto err_vlan_l2_groups;
}
err = ofdpa_port_vlan_flood_group(ofdpa_port, flags,
internal_vlan_id);
if (err) {
netdev_err(ofdpa_port->dev, "Error (%d) port VLAN l2 flood group\n", err);
goto err_flood_group;
}
err = ofdpa_flow_tbl_vlan(ofdpa_port, flags,
in_pport, vlan_id, vlan_id_mask,
goto_tbl, untagged, internal_vlan_id);
if (err)
netdev_err(ofdpa_port->dev, "Error (%d) port VLAN table\n", err);
return 0;
err_vlan_add:
err_vlan_l2_groups:
err_flood_group:
change_bit(ntohs(internal_vlan_id), ofdpa_port->vlan_bitmap);
return err;
}
static int ofdpa_port_ig_tbl(struct ofdpa_port *ofdpa_port, int flags)
{
enum rocker_of_dpa_table_id goto_tbl;
u32 in_pport;
u32 in_pport_mask;
int err;
/* Normal Ethernet Frames. Matches pkts from any local physical
* ports. Goto VLAN tbl.
*/
in_pport = 0;
in_pport_mask = 0xffff0000;
goto_tbl = ROCKER_OF_DPA_TABLE_ID_VLAN;
err = ofdpa_flow_tbl_ig_port(ofdpa_port, flags,
in_pport, in_pport_mask,
goto_tbl);
if (err)
netdev_err(ofdpa_port->dev, "Error (%d) ingress port table entry\n", err);
return err;
}
struct ofdpa_fdb_learn_work {
struct work_struct work;
struct ofdpa_port *ofdpa_port;
int flags;
u8 addr[ETH_ALEN];
u16 vid;
};
static void ofdpa_port_fdb_learn_work(struct work_struct *work)
{
const struct ofdpa_fdb_learn_work *lw =
container_of(work, struct ofdpa_fdb_learn_work, work);
bool removing = (lw->flags & OFDPA_OP_FLAG_REMOVE);
struct switchdev_notifier_fdb_info info = {};
enum switchdev_notifier_type event;
info.addr = lw->addr;
info.vid = lw->vid;
info.offloaded = !removing;
event = removing ? SWITCHDEV_FDB_DEL_TO_BRIDGE :
SWITCHDEV_FDB_ADD_TO_BRIDGE;
rtnl_lock();
call_switchdev_notifiers(event, lw->ofdpa_port->dev, &info.info, NULL);
rtnl_unlock();
kfree(work);
}
static int ofdpa_port_fdb_learn(struct ofdpa_port *ofdpa_port,
int flags, const u8 *addr, __be16 vlan_id)
{
struct ofdpa_fdb_learn_work *lw;
enum rocker_of_dpa_table_id goto_tbl =
ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
u32 out_pport = ofdpa_port->pport;
u32 tunnel_id = 0;
u32 group_id = ROCKER_GROUP_NONE;
bool copy_to_cpu = false;
int err;
if (ofdpa_port_is_bridged(ofdpa_port))
group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
if (!(flags & OFDPA_OP_FLAG_REFRESH)) {
err = ofdpa_flow_tbl_bridge(ofdpa_port, flags, addr,
NULL, vlan_id, tunnel_id, goto_tbl,
group_id, copy_to_cpu);
if (err)
return err;
}
if (!ofdpa_port_is_bridged(ofdpa_port))
return 0;
if (!(flags & OFDPA_OP_FLAG_LEARNED))
return 0;
lw = kzalloc(sizeof(*lw), GFP_ATOMIC);
if (!lw)
return -ENOMEM;
INIT_WORK(&lw->work, ofdpa_port_fdb_learn_work);
lw->ofdpa_port = ofdpa_port;
lw->flags = flags;
ether_addr_copy(lw->addr, addr);
lw->vid = ofdpa_port_vlan_to_vid(ofdpa_port, vlan_id);
schedule_work(&lw->work);
return 0;
}
static struct ofdpa_fdb_tbl_entry *
ofdpa_fdb_tbl_find(const struct ofdpa *ofdpa,
const struct ofdpa_fdb_tbl_entry *match)
{
struct ofdpa_fdb_tbl_entry *found;
hash_for_each_possible(ofdpa->fdb_tbl, found, entry, match->key_crc32)
if (memcmp(&found->key, &match->key, sizeof(found->key)) == 0)
return found;
return NULL;
}
static int ofdpa_port_fdb(struct ofdpa_port *ofdpa_port,
const unsigned char *addr,
__be16 vlan_id, int flags)
{
struct ofdpa *ofdpa = ofdpa_port->ofdpa;
struct ofdpa_fdb_tbl_entry *fdb;
struct ofdpa_fdb_tbl_entry *found;
bool removing = (flags & OFDPA_OP_FLAG_REMOVE);
unsigned long lock_flags;
fdb = kzalloc(sizeof(*fdb), GFP_KERNEL);
if (!fdb)
return -ENOMEM;
fdb->learned = (flags & OFDPA_OP_FLAG_LEARNED);
fdb->touched = jiffies;
fdb->key.ofdpa_port = ofdpa_port;
ether_addr_copy(fdb->key.addr, addr);
fdb->key.vlan_id = vlan_id;
fdb->key_crc32 = crc32(~0, &fdb->key, sizeof(fdb->key));
spin_lock_irqsave(&ofdpa->fdb_tbl_lock, lock_flags);
found = ofdpa_fdb_tbl_find(ofdpa, fdb);
if (found) {
found->touched = jiffies;
if (removing) {
kfree(fdb);
hash_del(&found->entry);
}
} else if (!removing) {
hash_add(ofdpa->fdb_tbl, &fdb->entry,
fdb->key_crc32);
}
spin_unlock_irqrestore(&ofdpa->fdb_tbl_lock, lock_flags);
/* Check if adding and already exists, or removing and can't find */
if (!found != !removing) {
kfree(fdb);
if (!found && removing)
return 0;
/* Refreshing existing to update aging timers */
flags |= OFDPA_OP_FLAG_REFRESH;
}
return ofdpa_port_fdb_learn(ofdpa_port, flags, addr, vlan_id);
}
static int ofdpa_port_fdb_flush(struct ofdpa_port *ofdpa_port, int flags)
{
struct ofdpa *ofdpa = ofdpa_port->ofdpa;
struct ofdpa_fdb_tbl_entry *found;
unsigned long lock_flags;
struct hlist_node *tmp;
int bkt;
int err = 0;
if (ofdpa_port->stp_state == BR_STATE_LEARNING ||
ofdpa_port->stp_state == BR_STATE_FORWARDING)
return 0;
flags |= OFDPA_OP_FLAG_NOWAIT | OFDPA_OP_FLAG_REMOVE;
spin_lock_irqsave(&ofdpa->fdb_tbl_lock, lock_flags);
hash_for_each_safe(ofdpa->fdb_tbl, bkt, tmp, found, entry) {
if (found->key.ofdpa_port != ofdpa_port)
continue;
if (!found->learned)
continue;
err = ofdpa_port_fdb_learn(ofdpa_port, flags,
found->key.addr,
found->key.vlan_id);
if (err)
goto err_out;
hash_del(&found->entry);
}
err_out:
spin_unlock_irqrestore(&ofdpa->fdb_tbl_lock, lock_flags);
return err;
}
static void ofdpa_fdb_cleanup(struct timer_list *t)
{
struct ofdpa *ofdpa = from_timer(ofdpa, t, fdb_cleanup_timer);
struct ofdpa_port *ofdpa_port;
struct ofdpa_fdb_tbl_entry *entry;
struct hlist_node *tmp;
unsigned long next_timer = jiffies + ofdpa->ageing_time;
unsigned long expires;
unsigned long lock_flags;
int flags = OFDPA_OP_FLAG_NOWAIT | OFDPA_OP_FLAG_REMOVE |
OFDPA_OP_FLAG_LEARNED;
int bkt;
spin_lock_irqsave(&ofdpa->fdb_tbl_lock, lock_flags);
hash_for_each_safe(ofdpa->fdb_tbl, bkt, tmp, entry, entry) {
if (!entry->learned)
continue;
ofdpa_port = entry->key.ofdpa_port;
expires = entry->touched + ofdpa_port->ageing_time;
if (time_before_eq(expires, jiffies)) {
ofdpa_port_fdb_learn(ofdpa_port, flags,
entry->key.addr,
entry->key.vlan_id);
hash_del(&entry->entry);
} else if (time_before(expires, next_timer)) {
next_timer = expires;
}
}
spin_unlock_irqrestore(&ofdpa->fdb_tbl_lock, lock_flags);
mod_timer(&ofdpa->fdb_cleanup_timer, round_jiffies_up(next_timer));
}
static int ofdpa_port_router_mac(struct ofdpa_port *ofdpa_port,
int flags, __be16 vlan_id)
{
u32 in_pport_mask = 0xffffffff;
__be16 eth_type;
const u8 *dst_mac_mask = ff_mac;
__be16 vlan_id_mask = htons(0xffff);
bool copy_to_cpu = false;
int err;
if (ntohs(vlan_id) == 0)
vlan_id = ofdpa_port->internal_vlan_id;
eth_type = htons(ETH_P_IP);
err = ofdpa_flow_tbl_term_mac(ofdpa_port, ofdpa_port->pport,
in_pport_mask, eth_type,
ofdpa_port->dev->dev_addr,
dst_mac_mask, vlan_id, vlan_id_mask,
copy_to_cpu, flags);
if (err)
return err;
eth_type = htons(ETH_P_IPV6);
err = ofdpa_flow_tbl_term_mac(ofdpa_port, ofdpa_port->pport,
in_pport_mask, eth_type,
ofdpa_port->dev->dev_addr,
dst_mac_mask, vlan_id, vlan_id_mask,
copy_to_cpu, flags);
return err;
}
static int ofdpa_port_fwding(struct ofdpa_port *ofdpa_port, int flags)
{
bool pop_vlan;
u32 out_pport;
__be16 vlan_id;
u16 vid;
int err;
/* Port will be forwarding-enabled if its STP state is LEARNING
* or FORWARDING. Traffic from CPU can still egress, regardless of
* port STP state. Use L2 interface group on port VLANs as a way
* to toggle port forwarding: if forwarding is disabled, L2
* interface group will not exist.
*/
if (ofdpa_port->stp_state != BR_STATE_LEARNING &&
ofdpa_port->stp_state != BR_STATE_FORWARDING)
flags |= OFDPA_OP_FLAG_REMOVE;
out_pport = ofdpa_port->pport;
for (vid = 1; vid < VLAN_N_VID; vid++) {
if (!test_bit(vid, ofdpa_port->vlan_bitmap))
continue;
vlan_id = htons(vid);
pop_vlan = ofdpa_vlan_id_is_internal(vlan_id);
err = ofdpa_group_l2_interface(ofdpa_port, flags,
vlan_id, out_pport, pop_vlan);
if (err) {
netdev_err(ofdpa_port->dev, "Error (%d) port VLAN l2 group for pport %d\n",
err, out_pport);
return err;
}
}
return 0;
}
static int ofdpa_port_stp_update(struct ofdpa_port *ofdpa_port,
int flags, u8 state)
{
bool want[OFDPA_CTRL_MAX] = { 0, };
bool prev_ctrls[OFDPA_CTRL_MAX];
u8 prev_state;
int err;
int i;
memcpy(prev_ctrls, ofdpa_port->ctrls, sizeof(prev_ctrls));
prev_state = ofdpa_port->stp_state;
if (ofdpa_port->stp_state == state)
return 0;
ofdpa_port->stp_state = state;
switch (state) {
case BR_STATE_DISABLED:
/* port is completely disabled */
break;
case BR_STATE_LISTENING:
case BR_STATE_BLOCKING:
want[OFDPA_CTRL_LINK_LOCAL_MCAST] = true;
break;
case BR_STATE_LEARNING:
case BR_STATE_FORWARDING:
if (!ofdpa_port_is_ovsed(ofdpa_port))
want[OFDPA_CTRL_LINK_LOCAL_MCAST] = true;
want[OFDPA_CTRL_IPV4_MCAST] = true;
want[OFDPA_CTRL_IPV6_MCAST] = true;
if (ofdpa_port_is_bridged(ofdpa_port))
want[OFDPA_CTRL_DFLT_BRIDGING] = true;
else if (ofdpa_port_is_ovsed(ofdpa_port))
want[OFDPA_CTRL_DFLT_OVS] = true;
else
want[OFDPA_CTRL_LOCAL_ARP] = true;
break;
}
for (i = 0; i < OFDPA_CTRL_MAX; i++) {
if (want[i] != ofdpa_port->ctrls[i]) {
int ctrl_flags = flags |
(want[i] ? 0 : OFDPA_OP_FLAG_REMOVE);
err = ofdpa_port_ctrl(ofdpa_port, ctrl_flags,
&ofdpa_ctrls[i]);
if (err)
goto err_port_ctrl;
ofdpa_port->ctrls[i] = want[i];
}
}
err = ofdpa_port_fdb_flush(ofdpa_port, flags);
if (err)
goto err_fdb_flush;
err = ofdpa_port_fwding(ofdpa_port, flags);
if (err)
goto err_port_fwding;
return 0;
err_port_ctrl:
err_fdb_flush:
err_port_fwding:
memcpy(ofdpa_port->ctrls, prev_ctrls, sizeof(prev_ctrls));
ofdpa_port->stp_state = prev_state;
return err;
}
static int ofdpa_port_fwd_enable(struct ofdpa_port *ofdpa_port, int flags)
{
if (ofdpa_port_is_bridged(ofdpa_port))
/* bridge STP will enable port */
return 0;
/* port is not bridged, so simulate going to FORWARDING state */
return ofdpa_port_stp_update(ofdpa_port, flags,
BR_STATE_FORWARDING);
}
static int ofdpa_port_fwd_disable(struct ofdpa_port *ofdpa_port, int flags)
{
if (ofdpa_port_is_bridged(ofdpa_port))
/* bridge STP will disable port */
return 0;
/* port is not bridged, so simulate going to DISABLED state */
return ofdpa_port_stp_update(ofdpa_port, flags,
BR_STATE_DISABLED);
}
static int ofdpa_port_vlan_add(struct ofdpa_port *ofdpa_port,
u16 vid, u16 flags)
{
int err;
/* XXX deal with flags for PVID and untagged */
err = ofdpa_port_vlan(ofdpa_port, 0, vid);
if (err)
return err;
err = ofdpa_port_router_mac(ofdpa_port, 0, htons(vid));
if (err)
ofdpa_port_vlan(ofdpa_port,
OFDPA_OP_FLAG_REMOVE, vid);
return err;
}
static int ofdpa_port_vlan_del(struct ofdpa_port *ofdpa_port,
u16 vid, u16 flags)
{
int err;
err = ofdpa_port_router_mac(ofdpa_port, OFDPA_OP_FLAG_REMOVE,
htons(vid));
if (err)
return err;
return ofdpa_port_vlan(ofdpa_port, OFDPA_OP_FLAG_REMOVE,
vid);
}
static struct ofdpa_internal_vlan_tbl_entry *
ofdpa_internal_vlan_tbl_find(const struct ofdpa *ofdpa, int ifindex)
{
struct ofdpa_internal_vlan_tbl_entry *found;
hash_for_each_possible(ofdpa->internal_vlan_tbl, found,
entry, ifindex) {
if (found->ifindex == ifindex)
return found;
}
return NULL;
}
static __be16 ofdpa_port_internal_vlan_id_get(struct ofdpa_port *ofdpa_port,
int ifindex)
{
struct ofdpa *ofdpa = ofdpa_port->ofdpa;
struct ofdpa_internal_vlan_tbl_entry *entry;
struct ofdpa_internal_vlan_tbl_entry *found;
unsigned long lock_flags;
int i;
entry = kzalloc(sizeof(*entry), GFP_KERNEL);
if (!entry)
return 0;
entry->ifindex = ifindex;
spin_lock_irqsave(&ofdpa->internal_vlan_tbl_lock, lock_flags);
found = ofdpa_internal_vlan_tbl_find(ofdpa, ifindex);
if (found) {
kfree(entry);
goto found;
}
found = entry;
hash_add(ofdpa->internal_vlan_tbl, &found->entry, found->ifindex);
for (i = 0; i < OFDPA_N_INTERNAL_VLANS; i++) {
if (test_and_set_bit(i, ofdpa->internal_vlan_bitmap))
continue;
found->vlan_id = htons(OFDPA_INTERNAL_VLAN_ID_BASE + i);
goto found;
}
netdev_err(ofdpa_port->dev, "Out of internal VLAN IDs\n");
found:
found->ref_count++;
spin_unlock_irqrestore(&ofdpa->internal_vlan_tbl_lock, lock_flags);
return found->vlan_id;
}
static int ofdpa_port_fib_ipv4(struct ofdpa_port *ofdpa_port, __be32 dst,
int dst_len, struct fib_info *fi, u32 tb_id,
int flags)
{
const struct fib_nh *nh;
__be16 eth_type = htons(ETH_P_IP);
__be32 dst_mask = inet_make_mask(dst_len);
__be16 internal_vlan_id = ofdpa_port->internal_vlan_id;
u32 priority = fi->fib_priority;
enum rocker_of_dpa_table_id goto_tbl =
ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
u32 group_id;
bool nh_on_port;
bool has_gw;
u32 index;
int err;
/* XXX support ECMP */
nh = fib_info_nh(fi, 0);
nh_on_port = (nh->fib_nh_dev == ofdpa_port->dev);
has_gw = !!nh->fib_nh_gw4;
if (has_gw && nh_on_port) {
err = ofdpa_port_ipv4_nh(ofdpa_port, flags,
nh->fib_nh_gw4, &index);
if (err)
return err;
group_id = ROCKER_GROUP_L3_UNICAST(index);
} else {
/* Send to CPU for processing */
group_id = ROCKER_GROUP_L2_INTERFACE(internal_vlan_id, 0);
}
err = ofdpa_flow_tbl_ucast4_routing(ofdpa_port, eth_type, dst,
dst_mask, priority, goto_tbl,
group_id, fi, flags);
if (err)
netdev_err(ofdpa_port->dev, "Error (%d) IPv4 route %pI4\n",
err, &dst);
return err;
}
static void
ofdpa_port_internal_vlan_id_put(const struct ofdpa_port *ofdpa_port,
int ifindex)
{
struct ofdpa *ofdpa = ofdpa_port->ofdpa;
struct ofdpa_internal_vlan_tbl_entry *found;
unsigned long lock_flags;
unsigned long bit;
spin_lock_irqsave(&ofdpa->internal_vlan_tbl_lock, lock_flags);
found = ofdpa_internal_vlan_tbl_find(ofdpa, ifindex);
if (!found) {
netdev_err(ofdpa_port->dev,
"ifindex (%d) not found in internal VLAN tbl\n",
ifindex);
goto not_found;
}
if (--found->ref_count <= 0) {
bit = ntohs(found->vlan_id) - OFDPA_INTERNAL_VLAN_ID_BASE;
clear_bit(bit, ofdpa->internal_vlan_bitmap);
hash_del(&found->entry);
kfree(found);
}
not_found:
spin_unlock_irqrestore(&ofdpa->internal_vlan_tbl_lock, lock_flags);
}
/**********************************
* Rocker world ops implementation
**********************************/
static int ofdpa_init(struct rocker *rocker)
{
struct ofdpa *ofdpa = rocker->wpriv;
ofdpa->rocker = rocker;
hash_init(ofdpa->flow_tbl);
spin_lock_init(&ofdpa->flow_tbl_lock);
hash_init(ofdpa->group_tbl);
spin_lock_init(&ofdpa->group_tbl_lock);
hash_init(ofdpa->fdb_tbl);
spin_lock_init(&ofdpa->fdb_tbl_lock);
hash_init(ofdpa->internal_vlan_tbl);
spin_lock_init(&ofdpa->internal_vlan_tbl_lock);
hash_init(ofdpa->neigh_tbl);
spin_lock_init(&ofdpa->neigh_tbl_lock);
timer_setup(&ofdpa->fdb_cleanup_timer, ofdpa_fdb_cleanup, 0);
mod_timer(&ofdpa->fdb_cleanup_timer, jiffies);
ofdpa->ageing_time = BR_DEFAULT_AGEING_TIME;
return 0;
}
static void ofdpa_fini(struct rocker *rocker)
{
struct ofdpa *ofdpa = rocker->wpriv;
unsigned long flags;
struct ofdpa_flow_tbl_entry *flow_entry;
struct ofdpa_group_tbl_entry *group_entry;
struct ofdpa_fdb_tbl_entry *fdb_entry;
struct ofdpa_internal_vlan_tbl_entry *internal_vlan_entry;
struct ofdpa_neigh_tbl_entry *neigh_entry;
struct hlist_node *tmp;
int bkt;
del_timer_sync(&ofdpa->fdb_cleanup_timer);
flush_workqueue(rocker->rocker_owq);
spin_lock_irqsave(&ofdpa->flow_tbl_lock, flags);
hash_for_each_safe(ofdpa->flow_tbl, bkt, tmp, flow_entry, entry)
hash_del(&flow_entry->entry);
spin_unlock_irqrestore(&ofdpa->flow_tbl_lock, flags);
spin_lock_irqsave(&ofdpa->group_tbl_lock, flags);
hash_for_each_safe(ofdpa->group_tbl, bkt, tmp, group_entry, entry)
hash_del(&group_entry->entry);
spin_unlock_irqrestore(&ofdpa->group_tbl_lock, flags);
spin_lock_irqsave(&ofdpa->fdb_tbl_lock, flags);
hash_for_each_safe(ofdpa->fdb_tbl, bkt, tmp, fdb_entry, entry)
hash_del(&fdb_entry->entry);
spin_unlock_irqrestore(&ofdpa->fdb_tbl_lock, flags);
spin_lock_irqsave(&ofdpa->internal_vlan_tbl_lock, flags);
hash_for_each_safe(ofdpa->internal_vlan_tbl, bkt,
tmp, internal_vlan_entry, entry)
hash_del(&internal_vlan_entry->entry);
spin_unlock_irqrestore(&ofdpa->internal_vlan_tbl_lock, flags);
spin_lock_irqsave(&ofdpa->neigh_tbl_lock, flags);
hash_for_each_safe(ofdpa->neigh_tbl, bkt, tmp, neigh_entry, entry)
hash_del(&neigh_entry->entry);
spin_unlock_irqrestore(&ofdpa->neigh_tbl_lock, flags);
}
static int ofdpa_port_pre_init(struct rocker_port *rocker_port)
{
struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
ofdpa_port->ofdpa = rocker_port->rocker->wpriv;
ofdpa_port->rocker_port = rocker_port;
ofdpa_port->dev = rocker_port->dev;
ofdpa_port->pport = rocker_port->pport;
ofdpa_port->brport_flags = BR_LEARNING;
ofdpa_port->ageing_time = BR_DEFAULT_AGEING_TIME;
return 0;
}
static int ofdpa_port_init(struct rocker_port *rocker_port)
{
struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
int err;
rocker_port_set_learning(rocker_port,
!!(ofdpa_port->brport_flags & BR_LEARNING));
err = ofdpa_port_ig_tbl(ofdpa_port, 0);
if (err) {
netdev_err(ofdpa_port->dev, "install ig port table failed\n");
return err;
}
ofdpa_port->internal_vlan_id =
ofdpa_port_internal_vlan_id_get(ofdpa_port,
ofdpa_port->dev->ifindex);
err = ofdpa_port_vlan_add(ofdpa_port, OFDPA_UNTAGGED_VID, 0);
if (err) {
netdev_err(ofdpa_port->dev, "install untagged VLAN failed\n");
goto err_untagged_vlan;
}
return 0;
err_untagged_vlan:
ofdpa_port_ig_tbl(ofdpa_port, OFDPA_OP_FLAG_REMOVE);
return err;
}
static void ofdpa_port_fini(struct rocker_port *rocker_port)
{
struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
ofdpa_port_ig_tbl(ofdpa_port, OFDPA_OP_FLAG_REMOVE);
}
static int ofdpa_port_open(struct rocker_port *rocker_port)
{
struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
return ofdpa_port_fwd_enable(ofdpa_port, 0);
}
static void ofdpa_port_stop(struct rocker_port *rocker_port)
{
struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
ofdpa_port_fwd_disable(ofdpa_port, OFDPA_OP_FLAG_NOWAIT);
}
static int ofdpa_port_attr_stp_state_set(struct rocker_port *rocker_port,
u8 state)
{
struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
return ofdpa_port_stp_update(ofdpa_port, 0, state);
}
static int ofdpa_port_attr_bridge_flags_set(struct rocker_port *rocker_port,
unsigned long brport_flags)
{
struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
unsigned long orig_flags;
int err = 0;
orig_flags = ofdpa_port->brport_flags;
ofdpa_port->brport_flags = brport_flags;
if ((orig_flags ^ ofdpa_port->brport_flags) & BR_LEARNING)
err = rocker_port_set_learning(ofdpa_port->rocker_port,
!!(ofdpa_port->brport_flags & BR_LEARNING));
return err;
}
static int
ofdpa_port_attr_bridge_flags_support_get(const struct rocker_port *
rocker_port,
unsigned long *
p_brport_flags_support)
{
*p_brport_flags_support = BR_LEARNING;
return 0;
}
static int
ofdpa_port_attr_bridge_ageing_time_set(struct rocker_port *rocker_port,
u32 ageing_time)
{
struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
struct ofdpa *ofdpa = ofdpa_port->ofdpa;
ofdpa_port->ageing_time = clock_t_to_jiffies(ageing_time);
if (ofdpa_port->ageing_time < ofdpa->ageing_time)
ofdpa->ageing_time = ofdpa_port->ageing_time;
mod_timer(&ofdpa_port->ofdpa->fdb_cleanup_timer, jiffies);
return 0;
}
static int ofdpa_port_obj_vlan_add(struct rocker_port *rocker_port,
const struct switchdev_obj_port_vlan *vlan)
{
struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
return ofdpa_port_vlan_add(ofdpa_port, vlan->vid, vlan->flags);
}
static int ofdpa_port_obj_vlan_del(struct rocker_port *rocker_port,
const struct switchdev_obj_port_vlan *vlan)
{
struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
return ofdpa_port_vlan_del(ofdpa_port, vlan->vid, vlan->flags);
}
static int ofdpa_port_obj_fdb_add(struct rocker_port *rocker_port,
u16 vid, const unsigned char *addr)
{
struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
__be16 vlan_id = ofdpa_port_vid_to_vlan(ofdpa_port, vid, NULL);
if (!ofdpa_port_is_bridged(ofdpa_port))
return -EINVAL;
return ofdpa_port_fdb(ofdpa_port, addr, vlan_id, 0);
}
static int ofdpa_port_obj_fdb_del(struct rocker_port *rocker_port,
u16 vid, const unsigned char *addr)
{
struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
__be16 vlan_id = ofdpa_port_vid_to_vlan(ofdpa_port, vid, NULL);
int flags = OFDPA_OP_FLAG_REMOVE;
if (!ofdpa_port_is_bridged(ofdpa_port))
return -EINVAL;
return ofdpa_port_fdb(ofdpa_port, addr, vlan_id, flags);
}
static int ofdpa_port_bridge_join(struct ofdpa_port *ofdpa_port,
struct net_device *bridge,
struct netlink_ext_ack *extack)
{
struct net_device *dev = ofdpa_port->dev;
int err;
/* Port is joining bridge, so the internal VLAN for the
* port is going to change to the bridge internal VLAN.
* Let's remove untagged VLAN (vid=0) from port and
* re-add once internal VLAN has changed.
*/
err = ofdpa_port_vlan_del(ofdpa_port, OFDPA_UNTAGGED_VID, 0);
if (err)
return err;
ofdpa_port_internal_vlan_id_put(ofdpa_port,
ofdpa_port->dev->ifindex);
ofdpa_port->internal_vlan_id =
ofdpa_port_internal_vlan_id_get(ofdpa_port, bridge->ifindex);
ofdpa_port->bridge_dev = bridge;
err = ofdpa_port_vlan_add(ofdpa_port, OFDPA_UNTAGGED_VID, 0);
if (err)
return err;
return switchdev_bridge_port_offload(dev, dev, NULL, NULL, NULL,
false, extack);
}
static int ofdpa_port_bridge_leave(struct ofdpa_port *ofdpa_port)
{
struct net_device *dev = ofdpa_port->dev;
int err;
switchdev_bridge_port_unoffload(dev, NULL, NULL, NULL);
err = ofdpa_port_vlan_del(ofdpa_port, OFDPA_UNTAGGED_VID, 0);
if (err)
return err;
ofdpa_port_internal_vlan_id_put(ofdpa_port,
ofdpa_port->bridge_dev->ifindex);
ofdpa_port->internal_vlan_id =
ofdpa_port_internal_vlan_id_get(ofdpa_port,
ofdpa_port->dev->ifindex);
ofdpa_port->bridge_dev = NULL;
err = ofdpa_port_vlan_add(ofdpa_port, OFDPA_UNTAGGED_VID, 0);
if (err)
return err;
if (ofdpa_port->dev->flags & IFF_UP)
err = ofdpa_port_fwd_enable(ofdpa_port, 0);
return err;
}
static int ofdpa_port_ovs_changed(struct ofdpa_port *ofdpa_port,
struct net_device *master)
{
int err;
ofdpa_port->bridge_dev = master;
err = ofdpa_port_fwd_disable(ofdpa_port, 0);
if (err)
return err;
err = ofdpa_port_fwd_enable(ofdpa_port, 0);
return err;
}
static int ofdpa_port_master_linked(struct rocker_port *rocker_port,
struct net_device *master,
struct netlink_ext_ack *extack)
{
struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
int err = 0;
if (netif_is_bridge_master(master))
err = ofdpa_port_bridge_join(ofdpa_port, master, extack);
else if (netif_is_ovs_master(master))
err = ofdpa_port_ovs_changed(ofdpa_port, master);
return err;
}
static int ofdpa_port_master_unlinked(struct rocker_port *rocker_port,
struct net_device *master)
{
struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
int err = 0;
if (ofdpa_port_is_bridged(ofdpa_port))
err = ofdpa_port_bridge_leave(ofdpa_port);
else if (ofdpa_port_is_ovsed(ofdpa_port))
err = ofdpa_port_ovs_changed(ofdpa_port, NULL);
return err;
}
static int ofdpa_port_neigh_update(struct rocker_port *rocker_port,
struct neighbour *n)
{
struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
int flags = (n->nud_state & NUD_VALID ? 0 : OFDPA_OP_FLAG_REMOVE) |
OFDPA_OP_FLAG_NOWAIT;
__be32 ip_addr = *(__be32 *) n->primary_key;
return ofdpa_port_ipv4_neigh(ofdpa_port, flags, ip_addr, n->ha);
}
static int ofdpa_port_neigh_destroy(struct rocker_port *rocker_port,
struct neighbour *n)
{
struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
int flags = OFDPA_OP_FLAG_REMOVE | OFDPA_OP_FLAG_NOWAIT;
__be32 ip_addr = *(__be32 *) n->primary_key;
return ofdpa_port_ipv4_neigh(ofdpa_port, flags, ip_addr, n->ha);
}
static int ofdpa_port_ev_mac_vlan_seen(struct rocker_port *rocker_port,
const unsigned char *addr,
__be16 vlan_id)
{
struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
int flags = OFDPA_OP_FLAG_NOWAIT | OFDPA_OP_FLAG_LEARNED;
if (ofdpa_port->stp_state != BR_STATE_LEARNING &&
ofdpa_port->stp_state != BR_STATE_FORWARDING)
return 0;
return ofdpa_port_fdb(ofdpa_port, addr, vlan_id, flags);
}
static struct ofdpa_port *ofdpa_port_dev_lower_find(struct net_device *dev,
struct rocker *rocker)
{
struct rocker_port *rocker_port;
rocker_port = rocker_port_dev_lower_find(dev, rocker);
return rocker_port ? rocker_port->wpriv : NULL;
}
static int ofdpa_fib4_add(struct rocker *rocker,
const struct fib_entry_notifier_info *fen_info)
{
struct ofdpa *ofdpa = rocker->wpriv;
struct ofdpa_port *ofdpa_port;
struct fib_nh *nh;
int err;
if (ofdpa->fib_aborted)
return 0;
nh = fib_info_nh(fen_info->fi, 0);
ofdpa_port = ofdpa_port_dev_lower_find(nh->fib_nh_dev, rocker);
if (!ofdpa_port)
return 0;
err = ofdpa_port_fib_ipv4(ofdpa_port, htonl(fen_info->dst),
fen_info->dst_len, fen_info->fi,
fen_info->tb_id, 0);
if (err)
return err;
nh->fib_nh_flags |= RTNH_F_OFFLOAD;
return 0;
}
static int ofdpa_fib4_del(struct rocker *rocker,
const struct fib_entry_notifier_info *fen_info)
{
struct ofdpa *ofdpa = rocker->wpriv;
struct ofdpa_port *ofdpa_port;
struct fib_nh *nh;
if (ofdpa->fib_aborted)
return 0;
nh = fib_info_nh(fen_info->fi, 0);
ofdpa_port = ofdpa_port_dev_lower_find(nh->fib_nh_dev, rocker);
if (!ofdpa_port)
return 0;
nh->fib_nh_flags &= ~RTNH_F_OFFLOAD;
return ofdpa_port_fib_ipv4(ofdpa_port, htonl(fen_info->dst),
fen_info->dst_len, fen_info->fi,
fen_info->tb_id, OFDPA_OP_FLAG_REMOVE);
}
static void ofdpa_fib4_abort(struct rocker *rocker)
{
struct ofdpa *ofdpa = rocker->wpriv;
struct ofdpa_port *ofdpa_port;
struct ofdpa_flow_tbl_entry *flow_entry;
struct hlist_node *tmp;
unsigned long flags;
int bkt;
if (ofdpa->fib_aborted)
return;
spin_lock_irqsave(&ofdpa->flow_tbl_lock, flags);
hash_for_each_safe(ofdpa->flow_tbl, bkt, tmp, flow_entry, entry) {
struct fib_nh *nh;
if (flow_entry->key.tbl_id !=
ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING)
continue;
nh = fib_info_nh(flow_entry->fi, 0);
ofdpa_port = ofdpa_port_dev_lower_find(nh->fib_nh_dev, rocker);
if (!ofdpa_port)
continue;
nh->fib_nh_flags &= ~RTNH_F_OFFLOAD;
ofdpa_flow_tbl_del(ofdpa_port,
OFDPA_OP_FLAG_REMOVE | OFDPA_OP_FLAG_NOWAIT,
flow_entry);
}
spin_unlock_irqrestore(&ofdpa->flow_tbl_lock, flags);
ofdpa->fib_aborted = true;
}
struct rocker_world_ops rocker_ofdpa_ops = {
.kind = "ofdpa",
.priv_size = sizeof(struct ofdpa),
.port_priv_size = sizeof(struct ofdpa_port),
.mode = ROCKER_PORT_MODE_OF_DPA,
.init = ofdpa_init,
.fini = ofdpa_fini,
.port_pre_init = ofdpa_port_pre_init,
.port_init = ofdpa_port_init,
.port_fini = ofdpa_port_fini,
.port_open = ofdpa_port_open,
.port_stop = ofdpa_port_stop,
.port_attr_stp_state_set = ofdpa_port_attr_stp_state_set,
.port_attr_bridge_flags_set = ofdpa_port_attr_bridge_flags_set,
.port_attr_bridge_flags_support_get = ofdpa_port_attr_bridge_flags_support_get,
.port_attr_bridge_ageing_time_set = ofdpa_port_attr_bridge_ageing_time_set,
.port_obj_vlan_add = ofdpa_port_obj_vlan_add,
.port_obj_vlan_del = ofdpa_port_obj_vlan_del,
.port_obj_fdb_add = ofdpa_port_obj_fdb_add,
.port_obj_fdb_del = ofdpa_port_obj_fdb_del,
.port_master_linked = ofdpa_port_master_linked,
.port_master_unlinked = ofdpa_port_master_unlinked,
.port_neigh_update = ofdpa_port_neigh_update,
.port_neigh_destroy = ofdpa_port_neigh_destroy,
.port_ev_mac_vlan_seen = ofdpa_port_ev_mac_vlan_seen,
.fib4_add = ofdpa_fib4_add,
.fib4_del = ofdpa_fib4_del,
.fib4_abort = ofdpa_fib4_abort,
};
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