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: Nir Dotan <nird@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nir Dotan
David S. Miller
parent
d7263ab35b
commit
cf7221a4f5
@ -7,6 +7,201 @@
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#include "spectrum.h"
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#include "spectrum_mr.h"
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struct mlxsw_sp2_mr_tcam {
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struct mlxsw_sp *mlxsw_sp;
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struct mlxsw_sp_acl_block *acl_block;
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struct mlxsw_sp_acl_ruleset *ruleset4;
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struct mlxsw_sp_acl_ruleset *ruleset6;
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};
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struct mlxsw_sp2_mr_route {
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struct mlxsw_sp2_mr_tcam *mr_tcam;
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};
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static struct mlxsw_sp_acl_ruleset *
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mlxsw_sp2_mr_tcam_proto_ruleset(struct mlxsw_sp2_mr_tcam *mr_tcam,
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enum mlxsw_sp_l3proto proto)
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{
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switch (proto) {
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case MLXSW_SP_L3_PROTO_IPV4:
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return mr_tcam->ruleset4;
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case MLXSW_SP_L3_PROTO_IPV6:
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return mr_tcam->ruleset6;
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}
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return NULL;
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}
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static int mlxsw_sp2_mr_tcam_bind_group(struct mlxsw_sp *mlxsw_sp,
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enum mlxsw_reg_pemrbt_protocol protocol,
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struct mlxsw_sp_acl_ruleset *ruleset)
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{
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char pemrbt_pl[MLXSW_REG_PEMRBT_LEN];
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u16 group_id;
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group_id = mlxsw_sp_acl_ruleset_group_id(ruleset);
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mlxsw_reg_pemrbt_pack(pemrbt_pl, protocol, group_id);
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return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pemrbt), pemrbt_pl);
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}
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static const enum mlxsw_afk_element mlxsw_sp2_mr_tcam_usage_ipv4[] = {
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MLXSW_AFK_ELEMENT_VIRT_ROUTER_8_10,
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MLXSW_AFK_ELEMENT_VIRT_ROUTER_0_7,
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MLXSW_AFK_ELEMENT_SRC_IP_0_31,
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MLXSW_AFK_ELEMENT_DST_IP_0_31,
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};
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static int mlxsw_sp2_mr_tcam_ipv4_init(struct mlxsw_sp2_mr_tcam *mr_tcam)
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{
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struct mlxsw_afk_element_usage elusage;
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int err;
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/* Initialize IPv4 ACL group. */
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mlxsw_afk_element_usage_fill(&elusage,
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mlxsw_sp2_mr_tcam_usage_ipv4,
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ARRAY_SIZE(mlxsw_sp2_mr_tcam_usage_ipv4));
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mr_tcam->ruleset4 = mlxsw_sp_acl_ruleset_get(mr_tcam->mlxsw_sp,
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mr_tcam->acl_block,
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MLXSW_SP_L3_PROTO_IPV4,
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MLXSW_SP_ACL_PROFILE_MR,
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&elusage);
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if (IS_ERR(mr_tcam->ruleset4))
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return PTR_ERR(mr_tcam->ruleset4);
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/* MC Router groups should be bound before routes are inserted. */
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err = mlxsw_sp2_mr_tcam_bind_group(mr_tcam->mlxsw_sp,
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MLXSW_REG_PEMRBT_PROTO_IPV4,
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mr_tcam->ruleset4);
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if (err)
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goto err_bind_group;
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return 0;
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err_bind_group:
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mlxsw_sp_acl_ruleset_put(mr_tcam->mlxsw_sp, mr_tcam->ruleset4);
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return err;
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}
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static void mlxsw_sp2_mr_tcam_ipv4_fini(struct mlxsw_sp2_mr_tcam *mr_tcam)
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{
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mlxsw_sp_acl_ruleset_put(mr_tcam->mlxsw_sp, mr_tcam->ruleset4);
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}
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static const enum mlxsw_afk_element mlxsw_sp2_mr_tcam_usage_ipv6[] = {
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MLXSW_AFK_ELEMENT_VIRT_ROUTER_8_10,
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MLXSW_AFK_ELEMENT_VIRT_ROUTER_0_7,
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MLXSW_AFK_ELEMENT_SRC_IP_96_127,
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MLXSW_AFK_ELEMENT_SRC_IP_64_95,
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MLXSW_AFK_ELEMENT_SRC_IP_32_63,
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MLXSW_AFK_ELEMENT_SRC_IP_0_31,
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MLXSW_AFK_ELEMENT_DST_IP_96_127,
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MLXSW_AFK_ELEMENT_DST_IP_64_95,
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MLXSW_AFK_ELEMENT_DST_IP_32_63,
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MLXSW_AFK_ELEMENT_DST_IP_0_31,
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};
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static int mlxsw_sp2_mr_tcam_ipv6_init(struct mlxsw_sp2_mr_tcam *mr_tcam)
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{
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struct mlxsw_afk_element_usage elusage;
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int err;
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/* Initialize IPv6 ACL group */
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mlxsw_afk_element_usage_fill(&elusage,
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mlxsw_sp2_mr_tcam_usage_ipv6,
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ARRAY_SIZE(mlxsw_sp2_mr_tcam_usage_ipv6));
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mr_tcam->ruleset6 = mlxsw_sp_acl_ruleset_get(mr_tcam->mlxsw_sp,
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mr_tcam->acl_block,
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MLXSW_SP_L3_PROTO_IPV6,
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MLXSW_SP_ACL_PROFILE_MR,
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&elusage);
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if (IS_ERR(mr_tcam->ruleset6))
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return PTR_ERR(mr_tcam->ruleset6);
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/* MC Router groups should be bound before routes are inserted. */
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err = mlxsw_sp2_mr_tcam_bind_group(mr_tcam->mlxsw_sp,
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MLXSW_REG_PEMRBT_PROTO_IPV6,
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mr_tcam->ruleset6);
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if (err)
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goto err_bind_group;
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return 0;
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err_bind_group:
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mlxsw_sp_acl_ruleset_put(mr_tcam->mlxsw_sp, mr_tcam->ruleset6);
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return err;
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}
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static void mlxsw_sp2_mr_tcam_ipv6_fini(struct mlxsw_sp2_mr_tcam *mr_tcam)
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{
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mlxsw_sp_acl_ruleset_put(mr_tcam->mlxsw_sp, mr_tcam->ruleset6);
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}
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static void
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mlxsw_sp2_mr_tcam_rule_parse4(struct mlxsw_sp_acl_rule_info *rulei,
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struct mlxsw_sp_mr_route_key *key)
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{
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mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_SRC_IP_0_31,
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(char *) &key->source.addr4,
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(char *) &key->source_mask.addr4, 4);
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mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_DST_IP_0_31,
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(char *) &key->group.addr4,
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(char *) &key->group_mask.addr4, 4);
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}
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static void
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mlxsw_sp2_mr_tcam_rule_parse6(struct mlxsw_sp_acl_rule_info *rulei,
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struct mlxsw_sp_mr_route_key *key)
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{
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mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_SRC_IP_96_127,
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&key->source.addr6.s6_addr[0x0],
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&key->source_mask.addr6.s6_addr[0x0], 4);
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mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_SRC_IP_64_95,
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&key->source.addr6.s6_addr[0x4],
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&key->source_mask.addr6.s6_addr[0x4], 4);
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mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_SRC_IP_32_63,
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&key->source.addr6.s6_addr[0x8],
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&key->source_mask.addr6.s6_addr[0x8], 4);
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mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_SRC_IP_0_31,
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&key->source.addr6.s6_addr[0xc],
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&key->source_mask.addr6.s6_addr[0xc], 4);
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mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_DST_IP_96_127,
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&key->group.addr6.s6_addr[0x0],
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&key->group_mask.addr6.s6_addr[0x0], 4);
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mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_DST_IP_64_95,
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&key->group.addr6.s6_addr[0x4],
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&key->group_mask.addr6.s6_addr[0x4], 4);
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mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_DST_IP_32_63,
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&key->group.addr6.s6_addr[0x8],
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&key->group_mask.addr6.s6_addr[0x8], 4);
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mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_DST_IP_0_31,
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&key->group.addr6.s6_addr[0xc],
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&key->group_mask.addr6.s6_addr[0xc], 4);
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}
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static void
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mlxsw_sp2_mr_tcam_rule_parse(struct mlxsw_sp_acl_rule *rule,
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struct mlxsw_sp_mr_route_key *key,
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unsigned int priority)
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{
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struct mlxsw_sp_acl_rule_info *rulei;
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rulei = mlxsw_sp_acl_rule_rulei(rule);
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rulei->priority = priority;
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mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_VIRT_ROUTER_0_7,
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key->vrid, GENMASK(7, 0));
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mlxsw_sp_acl_rulei_keymask_u32(rulei,
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MLXSW_AFK_ELEMENT_VIRT_ROUTER_8_10,
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key->vrid >> 8, GENMASK(2, 0));
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switch (key->proto) {
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case MLXSW_SP_L3_PROTO_IPV4:
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return mlxsw_sp2_mr_tcam_rule_parse4(rulei, key);
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case MLXSW_SP_L3_PROTO_IPV6:
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return mlxsw_sp2_mr_tcam_rule_parse6(rulei, key);
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}
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}
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static int
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mlxsw_sp2_mr_tcam_route_create(struct mlxsw_sp *mlxsw_sp, void *priv,
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void *route_priv,
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@ -14,7 +209,33 @@ mlxsw_sp2_mr_tcam_route_create(struct mlxsw_sp *mlxsw_sp, void *priv,
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struct mlxsw_afa_block *afa_block,
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enum mlxsw_sp_mr_route_prio prio)
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{
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struct mlxsw_sp2_mr_route *mr_route = route_priv;
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struct mlxsw_sp2_mr_tcam *mr_tcam = priv;
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struct mlxsw_sp_acl_ruleset *ruleset;
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struct mlxsw_sp_acl_rule *rule;
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int err;
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mr_route->mr_tcam = mr_tcam;
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ruleset = mlxsw_sp2_mr_tcam_proto_ruleset(mr_tcam, key->proto);
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if (WARN_ON(!ruleset))
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return -EINVAL;
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rule = mlxsw_sp_acl_rule_create(mlxsw_sp, ruleset,
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(unsigned long) route_priv, afa_block,
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NULL);
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if (IS_ERR(rule))
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return PTR_ERR(rule);
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mlxsw_sp2_mr_tcam_rule_parse(rule, key, prio);
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err = mlxsw_sp_acl_rule_add(mlxsw_sp, rule);
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if (err)
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goto err_rule_add;
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return 0;
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err_rule_add:
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mlxsw_sp_acl_rule_destroy(mlxsw_sp, rule);
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return err;
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}
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static void
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@ -22,6 +243,21 @@ mlxsw_sp2_mr_tcam_route_destroy(struct mlxsw_sp *mlxsw_sp, void *priv,
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void *route_priv,
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struct mlxsw_sp_mr_route_key *key)
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{
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struct mlxsw_sp2_mr_tcam *mr_tcam = priv;
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struct mlxsw_sp_acl_ruleset *ruleset;
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struct mlxsw_sp_acl_rule *rule;
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ruleset = mlxsw_sp2_mr_tcam_proto_ruleset(mr_tcam, key->proto);
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if (WARN_ON(!ruleset))
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return;
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rule = mlxsw_sp_acl_rule_lookup(mlxsw_sp, ruleset,
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(unsigned long) route_priv);
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if (WARN_ON(!rule))
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return;
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mlxsw_sp_acl_rule_del(mlxsw_sp, rule);
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mlxsw_sp_acl_rule_destroy(mlxsw_sp, rule);
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}
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static int
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@ -30,21 +266,64 @@ mlxsw_sp2_mr_tcam_route_update(struct mlxsw_sp *mlxsw_sp,
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struct mlxsw_sp_mr_route_key *key,
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struct mlxsw_afa_block *afa_block)
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{
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return 0;
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struct mlxsw_sp2_mr_route *mr_route = route_priv;
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struct mlxsw_sp2_mr_tcam *mr_tcam = mr_route->mr_tcam;
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struct mlxsw_sp_acl_ruleset *ruleset;
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struct mlxsw_sp_acl_rule *rule;
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ruleset = mlxsw_sp2_mr_tcam_proto_ruleset(mr_tcam, key->proto);
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if (WARN_ON(!ruleset))
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return -EINVAL;
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rule = mlxsw_sp_acl_rule_lookup(mlxsw_sp, ruleset,
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(unsigned long) route_priv);
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if (WARN_ON(!rule))
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return -EINVAL;
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return mlxsw_sp_acl_rule_action_replace(mlxsw_sp, rule, afa_block);
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}
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static int mlxsw_sp2_mr_tcam_init(struct mlxsw_sp *mlxsw_sp, void *priv)
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{
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struct mlxsw_sp2_mr_tcam *mr_tcam = priv;
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int err;
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mr_tcam->mlxsw_sp = mlxsw_sp;
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mr_tcam->acl_block = mlxsw_sp_acl_block_create(mlxsw_sp, NULL);
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if (!mr_tcam->acl_block)
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return -ENOMEM;
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err = mlxsw_sp2_mr_tcam_ipv4_init(mr_tcam);
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if (err)
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goto err_ipv4_init;
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err = mlxsw_sp2_mr_tcam_ipv6_init(mr_tcam);
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if (err)
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goto err_ipv6_init;
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return 0;
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err_ipv6_init:
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mlxsw_sp2_mr_tcam_ipv4_fini(mr_tcam);
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err_ipv4_init:
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mlxsw_sp_acl_block_destroy(mr_tcam->acl_block);
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return err;
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}
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static void mlxsw_sp2_mr_tcam_fini(void *priv)
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{
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struct mlxsw_sp2_mr_tcam *mr_tcam = priv;
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mlxsw_sp2_mr_tcam_ipv6_fini(mr_tcam);
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mlxsw_sp2_mr_tcam_ipv4_fini(mr_tcam);
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mlxsw_sp_acl_block_destroy(mr_tcam->acl_block);
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}
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const struct mlxsw_sp_mr_tcam_ops mlxsw_sp2_mr_tcam_ops = {
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.priv_size = sizeof(struct mlxsw_sp2_mr_tcam),
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.init = mlxsw_sp2_mr_tcam_init,
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.fini = mlxsw_sp2_mr_tcam_fini,
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.route_priv_size = sizeof(struct mlxsw_sp2_mr_route),
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.route_create = mlxsw_sp2_mr_tcam_route_create,
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.route_destroy = mlxsw_sp2_mr_tcam_route_destroy,
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.route_update = mlxsw_sp2_mr_tcam_route_update,
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