Commit cf7221a4 authored by Nir Dotan's avatar Nir Dotan Committed by David S. Miller
Browse files

mlxsw: spectrum_router: Add Multicast routing support for Spectrum-2



Add implementation of Spectrum-2 multicast routes for both IPv4 and IPv6 by
using ACL module explicitly.
In Spectrum-2, multicast routes are set as ACL rules, so initialization
takes care of creating dedicated ACL groups and binding them to the
appropriate multicast routing protocol IPv4/IPv6, and afterwards routes
configuration translates to setting explicit ACL rules.
Signed-off-by: default avatarNir Dotan <nird@mellanox.com>
Reviewed-by: default avatarJiri Pirko <jiri@mellanox.com>
Signed-off-by: default avatarIdo Schimmel <idosch@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent d7263ab3
......@@ -7,6 +7,201 @@
#include "spectrum.h"
#include "spectrum_mr.h"
struct mlxsw_sp2_mr_tcam {
struct mlxsw_sp *mlxsw_sp;
struct mlxsw_sp_acl_block *acl_block;
struct mlxsw_sp_acl_ruleset *ruleset4;
struct mlxsw_sp_acl_ruleset *ruleset6;
};
struct mlxsw_sp2_mr_route {
struct mlxsw_sp2_mr_tcam *mr_tcam;
};
static struct mlxsw_sp_acl_ruleset *
mlxsw_sp2_mr_tcam_proto_ruleset(struct mlxsw_sp2_mr_tcam *mr_tcam,
enum mlxsw_sp_l3proto proto)
{
switch (proto) {
case MLXSW_SP_L3_PROTO_IPV4:
return mr_tcam->ruleset4;
case MLXSW_SP_L3_PROTO_IPV6:
return mr_tcam->ruleset6;
}
return NULL;
}
static int mlxsw_sp2_mr_tcam_bind_group(struct mlxsw_sp *mlxsw_sp,
enum mlxsw_reg_pemrbt_protocol protocol,
struct mlxsw_sp_acl_ruleset *ruleset)
{
char pemrbt_pl[MLXSW_REG_PEMRBT_LEN];
u16 group_id;
group_id = mlxsw_sp_acl_ruleset_group_id(ruleset);
mlxsw_reg_pemrbt_pack(pemrbt_pl, protocol, group_id);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pemrbt), pemrbt_pl);
}
static const enum mlxsw_afk_element mlxsw_sp2_mr_tcam_usage_ipv4[] = {
MLXSW_AFK_ELEMENT_VIRT_ROUTER_8_10,
MLXSW_AFK_ELEMENT_VIRT_ROUTER_0_7,
MLXSW_AFK_ELEMENT_SRC_IP_0_31,
MLXSW_AFK_ELEMENT_DST_IP_0_31,
};
static int mlxsw_sp2_mr_tcam_ipv4_init(struct mlxsw_sp2_mr_tcam *mr_tcam)
{
struct mlxsw_afk_element_usage elusage;
int err;
/* Initialize IPv4 ACL group. */
mlxsw_afk_element_usage_fill(&elusage,
mlxsw_sp2_mr_tcam_usage_ipv4,
ARRAY_SIZE(mlxsw_sp2_mr_tcam_usage_ipv4));
mr_tcam->ruleset4 = mlxsw_sp_acl_ruleset_get(mr_tcam->mlxsw_sp,
mr_tcam->acl_block,
MLXSW_SP_L3_PROTO_IPV4,
MLXSW_SP_ACL_PROFILE_MR,
&elusage);
if (IS_ERR(mr_tcam->ruleset4))
return PTR_ERR(mr_tcam->ruleset4);
/* MC Router groups should be bound before routes are inserted. */
err = mlxsw_sp2_mr_tcam_bind_group(mr_tcam->mlxsw_sp,
MLXSW_REG_PEMRBT_PROTO_IPV4,
mr_tcam->ruleset4);
if (err)
goto err_bind_group;
return 0;
err_bind_group:
mlxsw_sp_acl_ruleset_put(mr_tcam->mlxsw_sp, mr_tcam->ruleset4);
return err;
}
static void mlxsw_sp2_mr_tcam_ipv4_fini(struct mlxsw_sp2_mr_tcam *mr_tcam)
{
mlxsw_sp_acl_ruleset_put(mr_tcam->mlxsw_sp, mr_tcam->ruleset4);
}
static const enum mlxsw_afk_element mlxsw_sp2_mr_tcam_usage_ipv6[] = {
MLXSW_AFK_ELEMENT_VIRT_ROUTER_8_10,
MLXSW_AFK_ELEMENT_VIRT_ROUTER_0_7,
MLXSW_AFK_ELEMENT_SRC_IP_96_127,
MLXSW_AFK_ELEMENT_SRC_IP_64_95,
MLXSW_AFK_ELEMENT_SRC_IP_32_63,
MLXSW_AFK_ELEMENT_SRC_IP_0_31,
MLXSW_AFK_ELEMENT_DST_IP_96_127,
MLXSW_AFK_ELEMENT_DST_IP_64_95,
MLXSW_AFK_ELEMENT_DST_IP_32_63,
MLXSW_AFK_ELEMENT_DST_IP_0_31,
};
static int mlxsw_sp2_mr_tcam_ipv6_init(struct mlxsw_sp2_mr_tcam *mr_tcam)
{
struct mlxsw_afk_element_usage elusage;
int err;
/* Initialize IPv6 ACL group */
mlxsw_afk_element_usage_fill(&elusage,
mlxsw_sp2_mr_tcam_usage_ipv6,
ARRAY_SIZE(mlxsw_sp2_mr_tcam_usage_ipv6));
mr_tcam->ruleset6 = mlxsw_sp_acl_ruleset_get(mr_tcam->mlxsw_sp,
mr_tcam->acl_block,
MLXSW_SP_L3_PROTO_IPV6,
MLXSW_SP_ACL_PROFILE_MR,
&elusage);
if (IS_ERR(mr_tcam->ruleset6))
return PTR_ERR(mr_tcam->ruleset6);
/* MC Router groups should be bound before routes are inserted. */
err = mlxsw_sp2_mr_tcam_bind_group(mr_tcam->mlxsw_sp,
MLXSW_REG_PEMRBT_PROTO_IPV6,
mr_tcam->ruleset6);
if (err)
goto err_bind_group;
return 0;
err_bind_group:
mlxsw_sp_acl_ruleset_put(mr_tcam->mlxsw_sp, mr_tcam->ruleset6);
return err;
}
static void mlxsw_sp2_mr_tcam_ipv6_fini(struct mlxsw_sp2_mr_tcam *mr_tcam)
{
mlxsw_sp_acl_ruleset_put(mr_tcam->mlxsw_sp, mr_tcam->ruleset6);
}
static void
mlxsw_sp2_mr_tcam_rule_parse4(struct mlxsw_sp_acl_rule_info *rulei,
struct mlxsw_sp_mr_route_key *key)
{
mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_SRC_IP_0_31,
(char *) &key->source.addr4,
(char *) &key->source_mask.addr4, 4);
mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_DST_IP_0_31,
(char *) &key->group.addr4,
(char *) &key->group_mask.addr4, 4);
}
static void
mlxsw_sp2_mr_tcam_rule_parse6(struct mlxsw_sp_acl_rule_info *rulei,
struct mlxsw_sp_mr_route_key *key)
{
mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_SRC_IP_96_127,
&key->source.addr6.s6_addr[0x0],
&key->source_mask.addr6.s6_addr[0x0], 4);
mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_SRC_IP_64_95,
&key->source.addr6.s6_addr[0x4],
&key->source_mask.addr6.s6_addr[0x4], 4);
mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_SRC_IP_32_63,
&key->source.addr6.s6_addr[0x8],
&key->source_mask.addr6.s6_addr[0x8], 4);
mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_SRC_IP_0_31,
&key->source.addr6.s6_addr[0xc],
&key->source_mask.addr6.s6_addr[0xc], 4);
mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_DST_IP_96_127,
&key->group.addr6.s6_addr[0x0],
&key->group_mask.addr6.s6_addr[0x0], 4);
mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_DST_IP_64_95,
&key->group.addr6.s6_addr[0x4],
&key->group_mask.addr6.s6_addr[0x4], 4);
mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_DST_IP_32_63,
&key->group.addr6.s6_addr[0x8],
&key->group_mask.addr6.s6_addr[0x8], 4);
mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_DST_IP_0_31,
&key->group.addr6.s6_addr[0xc],
&key->group_mask.addr6.s6_addr[0xc], 4);
}
static void
mlxsw_sp2_mr_tcam_rule_parse(struct mlxsw_sp_acl_rule *rule,
struct mlxsw_sp_mr_route_key *key,
unsigned int priority)
{
struct mlxsw_sp_acl_rule_info *rulei;
rulei = mlxsw_sp_acl_rule_rulei(rule);
rulei->priority = priority;
mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_VIRT_ROUTER_0_7,
key->vrid, GENMASK(7, 0));
mlxsw_sp_acl_rulei_keymask_u32(rulei,
MLXSW_AFK_ELEMENT_VIRT_ROUTER_8_10,
key->vrid >> 8, GENMASK(2, 0));
switch (key->proto) {
case MLXSW_SP_L3_PROTO_IPV4:
return mlxsw_sp2_mr_tcam_rule_parse4(rulei, key);
case MLXSW_SP_L3_PROTO_IPV6:
return mlxsw_sp2_mr_tcam_rule_parse6(rulei, key);
}
}
static int
mlxsw_sp2_mr_tcam_route_create(struct mlxsw_sp *mlxsw_sp, void *priv,
void *route_priv,
......@@ -14,7 +209,33 @@ mlxsw_sp2_mr_tcam_route_create(struct mlxsw_sp *mlxsw_sp, void *priv,
struct mlxsw_afa_block *afa_block,
enum mlxsw_sp_mr_route_prio prio)
{
struct mlxsw_sp2_mr_route *mr_route = route_priv;
struct mlxsw_sp2_mr_tcam *mr_tcam = priv;
struct mlxsw_sp_acl_ruleset *ruleset;
struct mlxsw_sp_acl_rule *rule;
int err;
mr_route->mr_tcam = mr_tcam;
ruleset = mlxsw_sp2_mr_tcam_proto_ruleset(mr_tcam, key->proto);
if (WARN_ON(!ruleset))
return -EINVAL;
rule = mlxsw_sp_acl_rule_create(mlxsw_sp, ruleset,
(unsigned long) route_priv, afa_block,
NULL);
if (IS_ERR(rule))
return PTR_ERR(rule);
mlxsw_sp2_mr_tcam_rule_parse(rule, key, prio);
err = mlxsw_sp_acl_rule_add(mlxsw_sp, rule);
if (err)
goto err_rule_add;
return 0;
err_rule_add:
mlxsw_sp_acl_rule_destroy(mlxsw_sp, rule);
return err;
}
static void
......@@ -22,6 +243,21 @@ mlxsw_sp2_mr_tcam_route_destroy(struct mlxsw_sp *mlxsw_sp, void *priv,
void *route_priv,
struct mlxsw_sp_mr_route_key *key)
{
struct mlxsw_sp2_mr_tcam *mr_tcam = priv;
struct mlxsw_sp_acl_ruleset *ruleset;
struct mlxsw_sp_acl_rule *rule;
ruleset = mlxsw_sp2_mr_tcam_proto_ruleset(mr_tcam, key->proto);
if (WARN_ON(!ruleset))
return;
rule = mlxsw_sp_acl_rule_lookup(mlxsw_sp, ruleset,
(unsigned long) route_priv);
if (WARN_ON(!rule))
return;
mlxsw_sp_acl_rule_del(mlxsw_sp, rule);
mlxsw_sp_acl_rule_destroy(mlxsw_sp, rule);
}
static int
......@@ -30,21 +266,64 @@ mlxsw_sp2_mr_tcam_route_update(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_mr_route_key *key,
struct mlxsw_afa_block *afa_block)
{
return 0;
struct mlxsw_sp2_mr_route *mr_route = route_priv;
struct mlxsw_sp2_mr_tcam *mr_tcam = mr_route->mr_tcam;
struct mlxsw_sp_acl_ruleset *ruleset;
struct mlxsw_sp_acl_rule *rule;
ruleset = mlxsw_sp2_mr_tcam_proto_ruleset(mr_tcam, key->proto);
if (WARN_ON(!ruleset))
return -EINVAL;
rule = mlxsw_sp_acl_rule_lookup(mlxsw_sp, ruleset,
(unsigned long) route_priv);
if (WARN_ON(!rule))
return -EINVAL;
return mlxsw_sp_acl_rule_action_replace(mlxsw_sp, rule, afa_block);
}
static int mlxsw_sp2_mr_tcam_init(struct mlxsw_sp *mlxsw_sp, void *priv)
{
struct mlxsw_sp2_mr_tcam *mr_tcam = priv;
int err;
mr_tcam->mlxsw_sp = mlxsw_sp;
mr_tcam->acl_block = mlxsw_sp_acl_block_create(mlxsw_sp, NULL);
if (!mr_tcam->acl_block)
return -ENOMEM;
err = mlxsw_sp2_mr_tcam_ipv4_init(mr_tcam);
if (err)
goto err_ipv4_init;
err = mlxsw_sp2_mr_tcam_ipv6_init(mr_tcam);
if (err)
goto err_ipv6_init;
return 0;
err_ipv6_init:
mlxsw_sp2_mr_tcam_ipv4_fini(mr_tcam);
err_ipv4_init:
mlxsw_sp_acl_block_destroy(mr_tcam->acl_block);
return err;
}
static void mlxsw_sp2_mr_tcam_fini(void *priv)
{
struct mlxsw_sp2_mr_tcam *mr_tcam = priv;
mlxsw_sp2_mr_tcam_ipv6_fini(mr_tcam);
mlxsw_sp2_mr_tcam_ipv4_fini(mr_tcam);
mlxsw_sp_acl_block_destroy(mr_tcam->acl_block);
}
const struct mlxsw_sp_mr_tcam_ops mlxsw_sp2_mr_tcam_ops = {
.priv_size = sizeof(struct mlxsw_sp2_mr_tcam),
.init = mlxsw_sp2_mr_tcam_init,
.fini = mlxsw_sp2_mr_tcam_fini,
.route_priv_size = sizeof(struct mlxsw_sp2_mr_route),
.route_create = mlxsw_sp2_mr_tcam_route_create,
.route_destroy = mlxsw_sp2_mr_tcam_route_destroy,
.route_update = mlxsw_sp2_mr_tcam_route_update,
......
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