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net/mlx5: E-Switch, Add SR-IOV (FDB) support 

Enabling E-Switch SRIOV for nvfs+1 vports.

Create E-Switch FDB for L2 UC/MC mac steering between VFs/PF and
external vport (Uplink).

FDB contains forwarding rules such as:
	UC MAC0 -> vport0(PF).
	UC MAC1 -> vport1.
	UC MAC2 -> vport2.
	MC MACX -> vport0, vport2, Uplink.
	MC MACY -> vport1, Uplink.

For unmatched traffic FDB has the following default rules:
	Unmached Traffic (src vport != Uplink) -> Uplink.
	Unmached Traffic (src vport == Uplink) -> vport0(PF).

FDB rules population:
Each NIC vport (VF) will notify E-Switch manager of its UC/MC vport
context changes via modify vport context command, which will be
translated to an event that will be handled by E-Switch manager (PF)
which will update FDB table accordingly.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Saeed Mahameed 2015-12-01 18:03:20 +02:00 committed by David S. Miller
parent 495716b191
commit 81848731ff
7 changed files with 667 additions and 89 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

694
drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
View File

@ -34,9 +34,12 @@
#include <linux/mlx5/driver.h>
#include <linux/mlx5/mlx5_ifc.h>
#include <linux/mlx5/vport.h>
#include <linux/mlx5/flow_table.h>
#include "mlx5_core.h"
#include "eswitch.h"
#define UPLINK_VPORT 0xFFFF
#define MLX5_DEBUG_ESWITCH_MASK BIT(3)
#define esw_info(dev, format, ...) \
@ -54,18 +57,26 @@ enum {
MLX5_ACTION_DEL = 2,
};
/* HW UC L2 table hash node */
struct mlx5_uc_l2addr {
/* E-Switch UC L2 table hash node */
struct esw_uc_addr {
struct l2addr_node node;
u8 action;
u32 table_index;
u32 vport;
};
/* Vport UC L2 table hash node */
struct mlx5_vport_addr {
struct l2addr_node node;
u8 action;
/* E-Switch MC FDB table hash node */
struct esw_mc_addr { /* SRIOV only */
struct l2addr_node node;
struct mlx5_flow_rule *uplink_rule; /* Forward to uplink rule */
u32 refcnt;
};
/* Vport UC/MC hash node */
struct vport_addr {
struct l2addr_node node;
u8 action;
u32 vport;
struct mlx5_flow_rule *flow_rule; /* SRIOV only */
};
enum {
@ -73,7 +84,11 @@ enum {
MC_ADDR_CHANGE = BIT(1),
};
static int arm_vport_context_events_cmd(struct mlx5_core_dev *dev, int vport,
/* Vport context events */
#define SRIOV_VPORT_EVENTS (UC_ADDR_CHANGE | \
MC_ADDR_CHANGE)
static int arm_vport_context_events_cmd(struct mlx5_core_dev *dev, u16 vport,
u32 events_mask)
{
int in[MLX5_ST_SZ_DW(modify_nic_vport_context_in)];
@ -196,97 +211,492 @@ static void del_l2_table_entry(struct mlx5_core_dev *dev, u32 index)
free_l2_table_index(l2_table, index);
}
/* SW E-Switch L2 Table management */
static int l2_table_addr_add(struct mlx5_eswitch *esw,
u8 mac[ETH_ALEN], u32 vport)
{
struct hlist_head *hash;
struct mlx5_uc_l2addr *addr;
int err;
/* E-Switch FDB flow steering */
struct dest_node {
struct list_head list;
struct mlx5_flow_destination dest;
};
hash = esw->l2_table.l2_hash;
addr = l2addr_hash_find(hash, mac, struct mlx5_uc_l2addr);
if (addr) {
esw_warn(esw->dev,
"Failed to set L2 mac(%pM) for vport(%d), mac is already in use by vport(%d)\n",
mac, vport, addr->vport);
return -EEXIST;
static int _mlx5_flow_rule_apply(struct mlx5_flow_rule *fr)
{
bool was_valid = fr->valid;
struct dest_node *dest_n;
u32 dest_list_size = 0;
void *in_match_value;
u32 *flow_context;
u32 flow_index;
int err;
int i;
if (list_empty(&fr->dest_list)) {
if (fr->valid)
mlx5_del_flow_table_entry(fr->ft, fr->fi);
fr->valid = false;
return 0;
}
addr = l2addr_hash_add(hash, mac, struct mlx5_uc_l2addr,
GFP_KERNEL);
if (!addr)
list_for_each_entry(dest_n, &fr->dest_list, list)
dest_list_size++;
flow_context = mlx5_vzalloc(MLX5_ST_SZ_BYTES(flow_context) +
MLX5_ST_SZ_BYTES(dest_format_struct) *
dest_list_size);
if (!flow_context)
return -ENOMEM;
addr->vport = vport;
addr->action = MLX5_ACTION_NONE;
err = set_l2_table_entry(esw->dev, mac, 0, 0, &addr->table_index);
if (err)
l2addr_hash_del(addr);
else
esw_debug(esw->dev, "\tADDED L2 MAC: vport[%d] %pM index:%d\n",
vport, addr->node.addr, addr->table_index);
MLX5_SET(flow_context, flow_context, flow_tag, fr->flow_tag);
MLX5_SET(flow_context, flow_context, action, fr->action);
MLX5_SET(flow_context, flow_context, destination_list_size,
dest_list_size);
i = 0;
list_for_each_entry(dest_n, &fr->dest_list, list) {
void *dest_addr = MLX5_ADDR_OF(flow_context, flow_context,
destination[i++]);
MLX5_SET(dest_format_struct, dest_addr, destination_type,
dest_n->dest.type);
MLX5_SET(dest_format_struct, dest_addr, destination_id,
dest_n->dest.vport_num);
}
in_match_value = MLX5_ADDR_OF(flow_context, flow_context, match_value);
memcpy(in_match_value, fr->match_value, MLX5_ST_SZ_BYTES(fte_match_param));
err = mlx5_add_flow_table_entry(fr->ft, fr->match_criteria_enable,
fr->match_criteria, flow_context,
&flow_index);
if (!err) {
if (was_valid)
mlx5_del_flow_table_entry(fr->ft, fr->fi);
fr->fi = flow_index;
fr->valid = true;
}
kfree(flow_context);
return err;
}
static int l2_table_addr_del(struct mlx5_eswitch *esw,
u8 mac[ETH_ALEN], u32 vport)
static int mlx5_flow_rule_add_dest(struct mlx5_flow_rule *fr,
struct mlx5_flow_destination *new_dest)
{
struct hlist_head *hash;
struct mlx5_uc_l2addr *addr;
struct dest_node *dest_n;
int err;
hash = esw->l2_table.l2_hash;
addr = l2addr_hash_find(hash, mac, struct mlx5_uc_l2addr);
if (!addr || addr->vport != vport) {
esw_warn(esw->dev, "MAC(%pM) doesn't belong to vport (%d)\n",
mac, vport);
return -EINVAL;
dest_n = kzalloc(sizeof(*dest_n), GFP_KERNEL);
if (!dest_n)
return -ENOMEM;
memcpy(&dest_n->dest, new_dest, sizeof(dest_n->dest));
mutex_lock(&fr->mutex);
list_add(&dest_n->list, &fr->dest_list);
err = _mlx5_flow_rule_apply(fr);
if (err) {
list_del(&dest_n->list);
kfree(dest_n);
}
mutex_unlock(&fr->mutex);
return err;
}
static int mlx5_flow_rule_del_dest(struct mlx5_flow_rule *fr,
struct mlx5_flow_destination *dest)
{
struct dest_node *dest_n;
struct dest_node *n;
int err;
mutex_lock(&fr->mutex);
list_for_each_entry_safe(dest_n, n, &fr->dest_list, list) {
if (dest->vport_num == dest_n->dest.vport_num)
goto found;
}
mutex_unlock(&fr->mutex);
return -ENOENT;
found:
list_del(&dest_n->list);
err = _mlx5_flow_rule_apply(fr);
mutex_unlock(&fr->mutex);
kfree(dest_n);
return err;
}
static struct mlx5_flow_rule *find_fr(struct mlx5_eswitch *esw,
u8 match_criteria_enable,
u32 *match_value)
{
struct hlist_head *hash = esw->mc_table;
struct esw_mc_addr *esw_mc;
u8 *dmac_v;
dmac_v = MLX5_ADDR_OF(fte_match_param, match_value,
outer_headers.dmac_47_16);
/* UNICAST FULL MATCH */
if (!is_multicast_ether_addr(dmac_v))
return NULL;
/* MULTICAST FULL MATCH */
esw_mc = l2addr_hash_find(hash, dmac_v, struct esw_mc_addr);
return esw_mc ? esw_mc->uplink_rule : NULL;
}
static struct mlx5_flow_rule *alloc_fr(void *ft,
u8 match_criteria_enable,
u32 *match_criteria,
u32 *match_value,
u32 action,
u32 flow_tag)
{
struct mlx5_flow_rule *fr = kzalloc(sizeof(*fr), GFP_KERNEL);
if (!fr)
return NULL;
fr->match_criteria = kzalloc(MLX5_ST_SZ_BYTES(fte_match_param), GFP_KERNEL);
fr->match_value = kzalloc(MLX5_ST_SZ_BYTES(fte_match_param), GFP_KERNEL);
if (!fr->match_criteria || !fr->match_value) {
kfree(fr->match_criteria);
kfree(fr->match_value);
kfree(fr);
return NULL;
}
esw_debug(esw->dev, "\tDELETE L2 MAC: vport[%d] %pM index:%d\n",
vport, addr->node.addr, addr->table_index);
del_l2_table_entry(esw->dev, addr->table_index);
l2addr_hash_del(addr);
memcpy(fr->match_criteria, match_criteria, MLX5_ST_SZ_BYTES(fte_match_param));
memcpy(fr->match_value, match_value, MLX5_ST_SZ_BYTES(fte_match_param));
fr->match_criteria_enable = match_criteria_enable;
fr->flow_tag = flow_tag;
fr->action = action;
mutex_init(&fr->mutex);
INIT_LIST_HEAD(&fr->dest_list);
atomic_set(&fr->refcount, 0);
fr->ft = ft;
return fr;
}
static void deref_fr(struct mlx5_flow_rule *fr)
{
if (!atomic_dec_and_test(&fr->refcount))
return;
kfree(fr->match_criteria);
kfree(fr->match_value);
kfree(fr);
}
static struct mlx5_flow_rule *
mlx5_add_flow_rule(struct mlx5_eswitch *esw,
u8 match_criteria_enable,
u32 *match_criteria,
u32 *match_value,
u32 action,
u32 flow_tag,
struct mlx5_flow_destination *dest)
{
struct mlx5_flow_rule *fr;
int err;
fr = find_fr(esw, match_criteria_enable, match_value);
fr = fr ? fr : alloc_fr(esw->fdb_table.fdb, match_criteria_enable, match_criteria,
match_value, action, flow_tag);
if (!fr)
return NULL;
atomic_inc(&fr->refcount);
err = mlx5_flow_rule_add_dest(fr, dest);
if (err) {
deref_fr(fr);
return NULL;
}
return fr;
}
static void mlx5_del_flow_rule(struct mlx5_flow_rule *fr, u32 vport)
{
struct mlx5_flow_destination dest;
dest.vport_num = vport;
mlx5_flow_rule_del_dest(fr, &dest);
deref_fr(fr);
}
/* E-Switch FDB */
static struct mlx5_flow_rule *
esw_fdb_set_vport_rule(struct mlx5_eswitch *esw, u8 mac[ETH_ALEN], u32 vport)
{
int match_header = MLX5_MATCH_OUTER_HEADERS;
struct mlx5_flow_destination dest;
struct mlx5_flow_rule *flow_rule = NULL;
u32 *match_v;
u32 *match_c;
u8 *dmac_v;
u8 *dmac_c;
match_v = kzalloc(MLX5_ST_SZ_BYTES(fte_match_param), GFP_KERNEL);
match_c = kzalloc(MLX5_ST_SZ_BYTES(fte_match_param), GFP_KERNEL);
if (!match_v || !match_c) {
pr_warn("FDB: Failed to alloc match parameters\n");
goto out;
}
dmac_v = MLX5_ADDR_OF(fte_match_param, match_v,
outer_headers.dmac_47_16);
dmac_c = MLX5_ADDR_OF(fte_match_param, match_c,
outer_headers.dmac_47_16);
ether_addr_copy(dmac_v, mac);
/* Match criteria mask */
memset(dmac_c, 0xff, 6);
dest.type = MLX5_FLOW_DESTINATION_TYPE_VPORT;
dest.vport_num = vport;
esw_debug(esw->dev,
"\tFDB add rule dmac_v(%pM) dmac_c(%pM) -> vport(%d)\n",
dmac_v, dmac_c, vport);
flow_rule =
mlx5_add_flow_rule(esw,
match_header,
match_c,
match_v,
MLX5_FLOW_CONTEXT_ACTION_FWD_DEST,
0, &dest);
if (IS_ERR_OR_NULL(flow_rule)) {
pr_warn(
"FDB: Failed to add flow rule: dmac_v(%pM) dmac_c(%pM) -> vport(%d), err(%ld)\n",
dmac_v, dmac_c, vport, PTR_ERR(flow_rule));
flow_rule = NULL;
}
out:
kfree(match_v);
kfree(match_c);
return flow_rule;
}
static int esw_create_fdb_table(struct mlx5_eswitch *esw, int nvports)
{
struct mlx5_core_dev *dev = esw->dev;
struct mlx5_flow_table_group g;
struct mlx5_flow_table *fdb;
u8 *dmac;
esw_debug(dev, "Create FDB log_max_size(%d)\n",
MLX5_CAP_ESW_FLOWTABLE_FDB(dev, log_max_ft_size));
memset(&g, 0, sizeof(g));
/* UC MC Full match rules*/
g.log_sz = MLX5_CAP_ESW_FLOWTABLE_FDB(dev, log_max_ft_size);
g.match_criteria_enable = MLX5_MATCH_OUTER_HEADERS;
dmac = MLX5_ADDR_OF(fte_match_param, g.match_criteria,
outer_headers.dmac_47_16);
/* Match criteria mask */
memset(dmac, 0xff, 6);
fdb = mlx5_create_flow_table(dev, 0,
MLX5_FLOW_TABLE_TYPE_ESWITCH,
1, &g);
if (fdb)
esw_debug(dev, "ESW: FDB Table created fdb->id %d\n", mlx5_get_flow_table_id(fdb));
else
esw_warn(dev, "ESW: Failed to create FDB Table\n");
esw->fdb_table.fdb = fdb;
return fdb ? 0 : -ENOMEM;
}
static void esw_destroy_fdb_table(struct mlx5_eswitch *esw)
{
if (!esw->fdb_table.fdb)
return;
esw_debug(esw->dev, "Destroy FDB Table fdb(%d)\n",
mlx5_get_flow_table_id(esw->fdb_table.fdb));
mlx5_destroy_flow_table(esw->fdb_table.fdb);
esw->fdb_table.fdb = NULL;
}
/* E-Switch vport UC/MC lists management */
typedef int (*vport_addr_action)(struct mlx5_eswitch *esw,
struct vport_addr *vaddr);
static int esw_add_uc_addr(struct mlx5_eswitch *esw, struct vport_addr *vaddr)
{
struct hlist_head *hash = esw->l2_table.l2_hash;
struct esw_uc_addr *esw_uc;
u8 *mac = vaddr->node.addr;
u32 vport = vaddr->vport;
int err;
esw_uc = l2addr_hash_find(hash, mac, struct esw_uc_addr);
if (esw_uc) {
esw_warn(esw->dev,
"Failed to set L2 mac(%pM) for vport(%d), mac is already in use by vport(%d)\n",
mac, vport, esw_uc->vport);
return -EEXIST;
}
esw_uc = l2addr_hash_add(hash, mac, struct esw_uc_addr, GFP_KERNEL);
if (!esw_uc)
return -ENOMEM;
esw_uc->vport = vport;
err = set_l2_table_entry(esw->dev, mac, 0, 0, &esw_uc->table_index);
if (err)
goto abort;
if (esw->fdb_table.fdb) /* SRIOV is enabled: Forward UC MAC to vport */
vaddr->flow_rule = esw_fdb_set_vport_rule(esw, mac, vport);
esw_debug(esw->dev, "\tADDED UC MAC: vport[%d] %pM index:%d fr(%p)\n",
vport, mac, esw_uc->table_index, vaddr->flow_rule);
return err;
abort:
l2addr_hash_del(esw_uc);
return err;
}
static int esw_del_uc_addr(struct mlx5_eswitch *esw, struct vport_addr *vaddr)
{
struct hlist_head *hash = esw->l2_table.l2_hash;
struct esw_uc_addr *esw_uc;
u8 *mac = vaddr->node.addr;
u32 vport = vaddr->vport;
esw_uc = l2addr_hash_find(hash, mac, struct esw_uc_addr);
if (!esw_uc || esw_uc->vport != vport) {
esw_debug(esw->dev,
"MAC(%pM) doesn't belong to vport (%d)\n",
mac, vport);
return -EINVAL;
}
esw_debug(esw->dev, "\tDELETE UC MAC: vport[%d] %pM index:%d fr(%p)\n",
vport, mac, esw_uc->table_index, vaddr->flow_rule);
del_l2_table_entry(esw->dev, esw_uc->table_index);
if (vaddr->flow_rule)
mlx5_del_flow_rule(vaddr->flow_rule, vport);
vaddr->flow_rule = NULL;
l2addr_hash_del(esw_uc);
return 0;
}
/* E-Switch vport uc list management */
static int esw_add_mc_addr(struct mlx5_eswitch *esw, struct vport_addr *vaddr)
{
struct hlist_head *hash = esw->mc_table;
struct esw_mc_addr *esw_mc;
u8 *mac = vaddr->node.addr;
u32 vport = vaddr->vport;
/* Apply vport uc list to HW l2 table */
static void esw_apply_vport_uc_list(struct mlx5_eswitch *esw,
u32 vport_num)
if (!esw->fdb_table.fdb)
return 0;
esw_mc = l2addr_hash_find(hash, mac, struct esw_mc_addr);
if (esw_mc)
goto add;
esw_mc = l2addr_hash_add(hash, mac, struct esw_mc_addr, GFP_KERNEL);
if (!esw_mc)
return -ENOMEM;
esw_mc->uplink_rule = /* Forward MC MAC to Uplink */
esw_fdb_set_vport_rule(esw, mac, UPLINK_VPORT);
add:
esw_mc->refcnt++;
/* Forward MC MAC to vport */
vaddr->flow_rule = esw_fdb_set_vport_rule(esw, mac, vport);
esw_debug(esw->dev,
"\tADDED MC MAC: vport[%d] %pM fr(%p) refcnt(%d) uplinkfr(%p)\n",
vport, mac, vaddr->flow_rule,
esw_mc->refcnt, esw_mc->uplink_rule);
return 0;
}
static int esw_del_mc_addr(struct mlx5_eswitch *esw, struct vport_addr *vaddr)
{
struct hlist_head *hash = esw->mc_table;
struct esw_mc_addr *esw_mc;
u8 *mac = vaddr->node.addr;
u32 vport = vaddr->vport;
if (!esw->fdb_table.fdb)
return 0;
esw_mc = l2addr_hash_find(hash, mac, struct esw_mc_addr);
if (!esw_mc) {
esw_warn(esw->dev,
"Failed to find eswitch MC addr for MAC(%pM) vport(%d)",
mac, vport);
return -EINVAL;
}
esw_debug(esw->dev,
"\tDELETE MC MAC: vport[%d] %pM fr(%p) refcnt(%d) uplinkfr(%p)\n",
vport, mac, vaddr->flow_rule, esw_mc->refcnt,
esw_mc->uplink_rule);
if (vaddr->flow_rule)
mlx5_del_flow_rule(vaddr->flow_rule, vport);
vaddr->flow_rule = NULL;
if (--esw_mc->refcnt)
return 0;
if (esw_mc->uplink_rule)
mlx5_del_flow_rule(esw_mc->uplink_rule, UPLINK_VPORT);
l2addr_hash_del(esw_mc);
return 0;
}
/* Apply vport UC/MC list to HW l2 table and FDB table */
static void esw_apply_vport_addr_list(struct mlx5_eswitch *esw,
u32 vport_num, int list_type)
{
struct mlx5_vport *vport = &esw->vports[vport_num];
struct mlx5_vport_addr *addr;
bool is_uc = list_type == MLX5_NVPRT_LIST_TYPE_UC;
vport_addr_action vport_addr_add;
vport_addr_action vport_addr_del;
struct vport_addr *addr;
struct l2addr_node *node;
struct hlist_head *hash;
struct hlist_node *tmp;
int hi;
hash = vport->uc_list;
vport_addr_add = is_uc ? esw_add_uc_addr :
esw_add_mc_addr;
vport_addr_del = is_uc ? esw_del_uc_addr :
esw_del_mc_addr;
hash = is_uc ? vport->uc_list : vport->mc_list;
for_each_l2hash_node(node, tmp, hash, hi) {
addr = container_of(node, struct mlx5_vport_addr, node);
addr = container_of(node, struct vport_addr, node);
switch (addr->action) {
case MLX5_ACTION_ADD:
l2_table_addr_add(esw, addr->node.addr, vport_num);
vport_addr_add(esw, addr);
addr->action = MLX5_ACTION_NONE;
break;
case MLX5_ACTION_DEL:
l2_table_addr_del(esw, addr->node.addr, vport_num);
vport_addr_del(esw, addr);
l2addr_hash_del(addr);
break;
}
}
}
/* Sync vport uc list from vport context */
static void esw_update_vport_uc_list(struct mlx5_eswitch *esw,
u32 vport_num)
/* Sync vport UC/MC list from vport context */
static void esw_update_vport_addr_list(struct mlx5_eswitch *esw,
u32 vport_num, int list_type)
{
struct mlx5_vport *vport = &esw->vports[vport_num];
struct mlx5_vport_addr *addr;
struct l2addr_node *node;
bool is_uc = list_type == MLX5_NVPRT_LIST_TYPE_UC;
u8 (*mac_list)[ETH_ALEN];
struct l2addr_node *node;
struct vport_addr *addr;
struct hlist_head *hash;
struct hlist_node *tmp;
int size;
@ -294,40 +704,41 @@ static void esw_update_vport_uc_list(struct mlx5_eswitch *esw,
int hi;
int i;
size = MLX5_MAX_UC_PER_VPORT(esw->dev);
size = is_uc ? MLX5_MAX_UC_PER_VPORT(esw->dev) :
MLX5_MAX_MC_PER_VPORT(esw->dev);
mac_list = kcalloc(size, ETH_ALEN, GFP_KERNEL);
if (!mac_list)
return;
hash = vport->uc_list;
hash = is_uc ? vport->uc_list : vport->mc_list;
for_each_l2hash_node(node, tmp, hash, hi) {
addr = container_of(node, struct mlx5_vport_addr, node);
addr = container_of(node, struct vport_addr, node);
addr->action = MLX5_ACTION_DEL;
}
err = mlx5_query_nic_vport_mac_list(esw->dev, vport_num,
MLX5_NVPRT_LIST_TYPE_UC,
err = mlx5_query_nic_vport_mac_list(esw->dev, vport_num, list_type,
mac_list, &size);
if (err)
return;
esw_debug(esw->dev, "vport[%d] context update UC list size (%d)\n",
vport_num, size);
esw_debug(esw->dev, "vport[%d] context update %s list size (%d)\n",
vport_num, is_uc ? "UC" : "MC", size);
for (i = 0; i < size; i++) {
if (!is_valid_ether_addr(mac_list[i]))
if (is_uc && !is_valid_ether_addr(mac_list[i]))
continue;
addr = l2addr_hash_find(hash, mac_list[i],
struct mlx5_vport_addr);
if (!is_uc && !is_multicast_ether_addr(mac_list[i]))
continue;
addr = l2addr_hash_find(hash, mac_list[i], struct vport_addr);
if (addr) {
addr->action = MLX5_ACTION_NONE;
continue;
}
addr = l2addr_hash_add(hash, mac_list[i],
struct mlx5_vport_addr,
addr = l2addr_hash_add(hash, mac_list[i], struct vport_addr,
GFP_KERNEL);
if (!addr) {
esw_warn(esw->dev,
@ -335,6 +746,7 @@ static void esw_update_vport_uc_list(struct mlx5_eswitch *esw,
mac_list[i], vport_num);
continue;
}
addr->vport = vport_num;
addr->action = MLX5_ACTION_ADD;
}
kfree(mac_list);
@ -345,32 +757,80 @@ static void esw_vport_change_handler(struct work_struct *work)
struct mlx5_vport *vport =
container_of(work, struct mlx5_vport, vport_change_handler);
struct mlx5_core_dev *dev = vport->dev;
struct mlx5_eswitch *esw = dev->priv.eswitch;
u8 mac[ETH_ALEN];
mlx5_query_nic_vport_mac_address(dev, vport->vport, mac);
esw_debug(dev, "vport[%d] Context Changed: perm mac: %pM\n",
vport->vport, mac);
if (!is_valid_ether_addr(mac))
goto out;
if (vport->enabled_events & UC_ADDR_CHANGE) {
esw_update_vport_addr_list(esw, vport->vport,
MLX5_NVPRT_LIST_TYPE_UC);
esw_apply_vport_addr_list(esw, vport->vport,
MLX5_NVPRT_LIST_TYPE_UC);
}
esw_update_vport_uc_list(dev->priv.eswitch, vport->vport);
esw_apply_vport_uc_list(dev->priv.eswitch, vport->vport);
if (vport->enabled_events & MC_ADDR_CHANGE) {
esw_update_vport_addr_list(esw, vport->vport,
MLX5_NVPRT_LIST_TYPE_MC);
esw_apply_vport_addr_list(esw, vport->vport,
MLX5_NVPRT_LIST_TYPE_MC);
}
out:
esw_debug(esw->dev, "vport[%d] Context Changed: Done\n", vport->vport);
if (vport->enabled)
arm_vport_context_events_cmd(dev, vport->vport,
UC_ADDR_CHANGE);
vport->enabled_events);
}
static void esw_enable_vport(struct mlx5_eswitch *esw, int vport_num)
static void esw_enable_vport(struct mlx5_eswitch *esw, int vport_num,
int enable_events)
{
struct mlx5_vport *vport = &esw->vports[vport_num];
unsigned long flags;
WARN_ON(vport->enabled);
esw_debug(esw->dev, "Enabling VPORT(%d)\n", vport_num);
mlx5_modify_vport_admin_state(esw->dev,
MLX5_QUERY_VPORT_STATE_IN_OP_MOD_ESW_VPORT,
vport_num,
MLX5_ESW_VPORT_ADMIN_STATE_AUTO);
/* Sync with current vport context */
vport->enabled_events = enable_events;
esw_vport_change_handler(&vport->vport_change_handler);
spin_lock_irqsave(&vport->lock, flags);
vport->enabled = true;
spin_unlock_irqrestore(&vport->lock, flags);
arm_vport_context_events_cmd(esw->dev, vport_num, UC_ADDR_CHANGE);
arm_vport_context_events_cmd(esw->dev, vport_num, enable_events);
esw->enabled_vports++;
esw_debug(esw->dev, "Enabled VPORT(%d)\n", vport_num);
}
static void esw_cleanup_vport(struct mlx5_eswitch *esw, u16 vport_num)
{
struct mlx5_vport *vport = &esw->vports[vport_num];
struct l2addr_node *node;
struct vport_addr *addr;
struct hlist_node *tmp;
int hi;
for_each_l2hash_node(node, tmp, vport->uc_list, hi) {
addr = container_of(node, struct vport_addr, node);
addr->action = MLX5_ACTION_DEL;
}
esw_apply_vport_addr_list(esw, vport_num, MLX5_NVPRT_LIST_TYPE_UC);
for_each_l2hash_node(node, tmp, vport->mc_list, hi) {
addr = container_of(node, struct vport_addr, node);
addr->action = MLX5_ACTION_DEL;
}
esw_apply_vport_addr_list(esw, vport_num, MLX5_NVPRT_LIST_TYPE_MC);
}
static void esw_disable_vport(struct mlx5_eswitch *esw, int vport_num)
@ -381,19 +841,82 @@ static void esw_disable_vport(struct mlx5_eswitch *esw, int vport_num)
if (!vport->enabled)
return;
esw_debug(esw->dev, "Disabling vport(%d)\n", vport_num);
/* Mark this vport as disabled to discard new events */
spin_lock_irqsave(&vport->lock, flags);
vport->enabled = false;
vport->enabled_events = 0;
spin_unlock_irqrestore(&vport->lock, flags);
mlx5_modify_vport_admin_state(esw->dev,
MLX5_QUERY_VPORT_STATE_IN_OP_MOD_ESW_VPORT,
vport_num,
MLX5_ESW_VPORT_ADMIN_STATE_DOWN);
/* Wait for current already scheduled events to complete */
flush_workqueue(esw->work_queue);
/* Disable events from this vport */
arm_vport_context_events_cmd(esw->dev, vport->vport, 0);
/* We don't assume VFs will cleanup after themselves */
esw_cleanup_vport(esw, vport_num);
esw->enabled_vports--;
}
/* Public E-Switch API */
int mlx5_eswitch_enable_sriov(struct mlx5_eswitch *esw, int nvfs)
{
int err;
int i;
if (!esw || !MLX5_CAP_GEN(esw->dev, vport_group_manager) ||
MLX5_CAP_GEN(esw->dev, port_type) != MLX5_CAP_PORT_TYPE_ETH)
return 0;
if (!MLX5_CAP_GEN(esw->dev, eswitch_flow_table) ||
!MLX5_CAP_ESW_FLOWTABLE_FDB(esw->dev, ft_support)) {
esw_warn(esw->dev, "E-Switch FDB is not supported, aborting ...\n");
return -ENOTSUPP;
}
esw_info(esw->dev, "E-Switch enable SRIOV: nvfs(%d)\n", nvfs);
esw_disable_vport(esw, 0);
err = esw_create_fdb_table(esw, nvfs + 1);
if (err)
goto abort;
for (i = 0; i <= nvfs; i++)
esw_enable_vport(esw, i, SRIOV_VPORT_EVENTS);
esw_info(esw->dev, "SRIOV enabled: active vports(%d)\n",
esw->enabled_vports);
return 0;
abort:
esw_enable_vport(esw, 0, UC_ADDR_CHANGE);
return err;
}
void mlx5_eswitch_disable_sriov(struct mlx5_eswitch *esw)
{
int i;
if (!esw || !MLX5_CAP_GEN(esw->dev, vport_group_manager) ||
MLX5_CAP_GEN(esw->dev, port_type) != MLX5_CAP_PORT_TYPE_ETH)
return;
esw_info(esw->dev, "disable SRIOV: active vports(%d)\n",
esw->enabled_vports);
for (i = 0; i < esw->total_vports; i++)
esw_disable_vport(esw, i);
esw_destroy_fdb_table(esw);
/* VPORT 0 (PF) must be enabled back with non-sriov configuration */
esw_enable_vport(esw, 0, UC_ADDR_CHANGE);
}
int mlx5_eswitch_init(struct mlx5_core_dev *dev)
{
int l2_table_size = 1 << MLX5_CAP_GEN(dev, log_max_l2_table);
@ -439,7 +962,6 @@ int mlx5_eswitch_init(struct mlx5_core_dev *dev)
goto abort;
}
esw->total_vports = total_vports;
for (vport_num = 0; vport_num < total_vports; vport_num++) {
struct mlx5_vport *vport = &esw->vports[vport_num];
@ -450,9 +972,11 @@ int mlx5_eswitch_init(struct mlx5_core_dev *dev)
spin_lock_init(&vport->lock);
}
dev->priv.eswitch = esw;
esw->total_vports = total_vports;
esw->enabled_vports = 0;
esw_enable_vport(esw, 0);
dev->priv.eswitch = esw;
esw_enable_vport(esw, 0, UC_ADDR_CHANGE);
/* VF Vports will be enabled when SRIOV is enabled */
return 0;
abort:

25
drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
View File

@ -86,10 +86,25 @@ struct l2addr_node {
kfree(ptr); \
})
struct mlx5_flow_rule {
void *ft;
u32 fi;
u8 match_criteria_enable;
u32 *match_criteria;
u32 *match_value;
u32 action;
u32 flow_tag;
bool valid;
atomic_t refcount;
struct mutex mutex; /* protect flow rule updates */
struct list_head dest_list;
};
struct mlx5_vport {
struct mlx5_core_dev *dev;
int vport;
struct hlist_head uc_list[MLX5_L2_ADDR_HASH_SIZE];
struct hlist_head mc_list[MLX5_L2_ADDR_HASH_SIZE];
struct work_struct vport_change_handler;
/* This spinlock protects access to vport data, between
@ -98,6 +113,7 @@ struct mlx5_vport {
*/
spinlock_t lock; /* vport events sync */
bool enabled;
u16 enabled_events;
};
struct mlx5_l2_table {
@ -106,17 +122,26 @@ struct mlx5_l2_table {
unsigned long *bitmap;
};
struct mlx5_eswitch_fdb {
void *fdb;
};
struct mlx5_eswitch {
struct mlx5_core_dev *dev;
struct mlx5_l2_table l2_table;
struct mlx5_eswitch_fdb fdb_table;
struct hlist_head mc_table[MLX5_L2_ADDR_HASH_SIZE];
struct workqueue_struct *work_queue;
struct mlx5_vport *vports;
int total_vports;
int enabled_vports;
};
/* E-Switch API */
int mlx5_eswitch_init(struct mlx5_core_dev *dev);
void mlx5_eswitch_cleanup(struct mlx5_eswitch *esw);
void mlx5_eswitch_vport_event(struct mlx5_eswitch *esw, struct mlx5_eqe *eqe);
int mlx5_eswitch_enable_sriov(struct mlx5_eswitch *esw, int nvfs);
void mlx5_eswitch_disable_sriov(struct mlx5_eswitch *esw);
#endif /* __MLX5_ESWITCH_H__ */

1
drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
View File

@ -36,6 +36,7 @@
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/if_link.h>
#define DRIVER_NAME "mlx5_core"
#define DRIVER_VERSION "3.0-1"

14
drivers/net/ethernet/mellanox/mlx5/core/sriov.c
View File

@ -33,6 +33,9 @@
#include <linux/pci.h>
#include <linux/mlx5/driver.h>
#include "mlx5_core.h"
#ifdef CONFIG_MLX5_CORE_EN
#include "eswitch.h"
#endif
static void enable_vfs(struct mlx5_core_dev *dev, int num_vfs)
{
@ -144,13 +147,15 @@ int mlx5_core_sriov_configure(struct pci_dev *pdev, int num_vfs)
mlx5_core_cleanup_vfs(dev);
if (!num_vfs) {
#ifdef CONFIG_MLX5_CORE_EN
mlx5_eswitch_disable_sriov(dev->priv.eswitch);
#endif
kfree(sriov->vfs_ctx);
sriov->vfs_ctx = NULL;
if (!pci_vfs_assigned(pdev))
pci_disable_sriov(pdev);
else
pr_info("unloading PF driver while leaving orphan VFs\n");
return 0;
}
@ -161,6 +166,9 @@ int mlx5_core_sriov_configure(struct pci_dev *pdev, int num_vfs)
}
mlx5_core_init_vfs(dev, num_vfs);
#ifdef CONFIG_MLX5_CORE_EN
mlx5_eswitch_enable_sriov(dev->priv.eswitch, num_vfs);
#endif
return num_vfs;
}
@ -199,6 +207,10 @@ int mlx5_sriov_init(struct mlx5_core_dev *dev)
sriov->enabled_vfs = cur_vfs;
mlx5_core_init_vfs(dev, cur_vfs);
#ifdef CONFIG_MLX5_CORE_EN
if (cur_vfs)
mlx5_eswitch_enable_sriov(dev->priv.eswitch, cur_vfs);
#endif
enable_vfs(dev, cur_vfs);

6
include/linux/mlx5/device.h
View File

@ -1074,6 +1074,12 @@ enum {
VPORT_STATE_UP = 0x1,
};
enum {
MLX5_ESW_VPORT_ADMIN_STATE_DOWN = 0x0,
MLX5_ESW_VPORT_ADMIN_STATE_UP = 0x1,
MLX5_ESW_VPORT_ADMIN_STATE_AUTO = 0x2,
};
enum {
MLX5_L3_PROT_TYPE_IPV4 = 0,
MLX5_L3_PROT_TYPE_IPV6 = 1,

9
include/linux/mlx5/flow_table.h
View File

@ -41,6 +41,15 @@ struct mlx5_flow_table_group {
u32 match_criteria[MLX5_ST_SZ_DW(fte_match_param)];
};
struct mlx5_flow_destination {
enum mlx5_flow_destination_type type;
union {
u32 tir_num;
void *ft;
u32 vport_num;
};
};
void *mlx5_create_flow_table(struct mlx5_core_dev *dev, u8 level, u8 table_type,
u16 num_groups,
struct mlx5_flow_table_group *group);

7
include/linux/mlx5/mlx5_ifc.h
View File

@ -827,9 +827,10 @@ struct mlx5_ifc_cmd_hca_cap_bits {
u8 reserved_69[0x220];
};
enum {
MLX5_DEST_FORMAT_STRUCT_DESTINATION_TYPE_FLOW_TABLE_ = 0x1,
MLX5_DEST_FORMAT_STRUCT_DESTINATION_TYPE_TIR = 0x2,
enum mlx5_flow_destination_type {
MLX5_FLOW_DESTINATION_TYPE_VPORT = 0x0,
MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE = 0x1,
MLX5_FLOW_DESTINATION_TYPE_TIR = 0x2,
};
struct mlx5_ifc_dest_format_struct_bits {