[openwrt/openwrt] realtek: Packet Inspection Engine support for RTL838x SoCs
LEDE Commits
lede-commits at lists.infradead.org
Fri Oct 8 23:26:20 PDT 2021
blogic pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/87b3bd07a445376d9cae73aaf9354029260183ac
commit 87b3bd07a445376d9cae73aaf9354029260183ac
Author: Birger Koblitz <git at birger-koblitz.de>
AuthorDate: Tue Sep 7 15:32:56 2021 +0200
realtek: Packet Inspection Engine support for RTL838x SoCs
Adds the RTL838x-specific PIE support routines.
Signed-off-by: Birger Koblitz <git at birger-koblitz.de>
---
.../files-5.10/drivers/net/dsa/rtl83xx/rtl838x.c | 1007 ++++++++++++++++++++
1 file changed, 1007 insertions(+)
diff --git a/target/linux/realtek/files-5.10/drivers/net/dsa/rtl83xx/rtl838x.c b/target/linux/realtek/files-5.10/drivers/net/dsa/rtl83xx/rtl838x.c
index 5d764b6a32..2d24eaa337 100644
--- a/target/linux/realtek/files-5.10/drivers/net/dsa/rtl83xx/rtl838x.c
+++ b/target/linux/realtek/files-5.10/drivers/net/dsa/rtl83xx/rtl838x.c
@@ -5,6 +5,96 @@
extern struct mutex smi_lock;
+// see_dal_maple_acl_log2PhyTmplteField and src/app/diag_v2/src/diag_acl.c
+/* Definition of the RTL838X-specific template field IDs as used in the PIE */
+enum template_field_id {
+ TEMPLATE_FIELD_SPMMASK = 0,
+ TEMPLATE_FIELD_SPM0 = 1, // Source portmask ports 0-15
+ TEMPLATE_FIELD_SPM1 = 2, // Source portmask ports 16-28
+ TEMPLATE_FIELD_RANGE_CHK = 3,
+ TEMPLATE_FIELD_DMAC0 = 4, // Destination MAC [15:0]
+ TEMPLATE_FIELD_DMAC1 = 5, // Destination MAC [31:16]
+ TEMPLATE_FIELD_DMAC2 = 6, // Destination MAC [47:32]
+ TEMPLATE_FIELD_SMAC0 = 7, // Source MAC [15:0]
+ TEMPLATE_FIELD_SMAC1 = 8, // Source MAC [31:16]
+ TEMPLATE_FIELD_SMAC2 = 9, // Source MAC [47:32]
+ TEMPLATE_FIELD_ETHERTYPE = 10, // Ethernet typ
+ TEMPLATE_FIELD_OTAG = 11, // Outer VLAN tag
+ TEMPLATE_FIELD_ITAG = 12, // Inner VLAN tag
+ TEMPLATE_FIELD_SIP0 = 13, // IPv4 or IPv6 source IP[15:0] or ARP/RARP
+ // source protocol address in header
+ TEMPLATE_FIELD_SIP1 = 14, // IPv4 or IPv6 source IP[31:16] or ARP/RARP
+ TEMPLATE_FIELD_DIP0 = 15, // IPv4 or IPv6 destination IP[15:0]
+ TEMPLATE_FIELD_DIP1 = 16, // IPv4 or IPv6 destination IP[31:16]
+ TEMPLATE_FIELD_IP_TOS_PROTO = 17, // IPv4 TOS/IPv6 traffic class and
+ // IPv4 proto/IPv6 next header fields
+ TEMPLATE_FIELD_L34_HEADER = 18, // packet with extra tag and IPv6 with auth, dest,
+ // frag, route, hop-by-hop option header,
+ // IGMP type, TCP flag
+ TEMPLATE_FIELD_L4_SPORT = 19, // TCP/UDP source port
+ TEMPLATE_FIELD_L4_DPORT = 20, // TCP/UDP destination port
+ TEMPLATE_FIELD_ICMP_IGMP = 21,
+ TEMPLATE_FIELD_IP_RANGE = 22,
+ TEMPLATE_FIELD_FIELD_SELECTOR_VALID = 23, // Field selector mask
+ TEMPLATE_FIELD_FIELD_SELECTOR_0 = 24,
+ TEMPLATE_FIELD_FIELD_SELECTOR_1 = 25,
+ TEMPLATE_FIELD_FIELD_SELECTOR_2 = 26,
+ TEMPLATE_FIELD_FIELD_SELECTOR_3 = 27,
+ TEMPLATE_FIELD_SIP2 = 28, // IPv6 source IP[47:32]
+ TEMPLATE_FIELD_SIP3 = 29, // IPv6 source IP[63:48]
+ TEMPLATE_FIELD_SIP4 = 30, // IPv6 source IP[79:64]
+ TEMPLATE_FIELD_SIP5 = 31, // IPv6 source IP[95:80]
+ TEMPLATE_FIELD_SIP6 = 32, // IPv6 source IP[111:96]
+ TEMPLATE_FIELD_SIP7 = 33, // IPv6 source IP[127:112]
+ TEMPLATE_FIELD_DIP2 = 34, // IPv6 destination IP[47:32]
+ TEMPLATE_FIELD_DIP3 = 35, // IPv6 destination IP[63:48]
+ TEMPLATE_FIELD_DIP4 = 36, // IPv6 destination IP[79:64]
+ TEMPLATE_FIELD_DIP5 = 37, // IPv6 destination IP[95:80]
+ TEMPLATE_FIELD_DIP6 = 38, // IPv6 destination IP[111:96]
+ TEMPLATE_FIELD_DIP7 = 39, // IPv6 destination IP[127:112]
+ TEMPLATE_FIELD_FWD_VID = 40, // Forwarding VLAN-ID
+ TEMPLATE_FIELD_FLOW_LABEL = 41,
+};
+
+/*
+ * The RTL838X SoCs use 5 fixed templates with definitions for which data fields are to
+ * be copied from the Ethernet Frame header into the 12 User-definable fields of the Packet
+ * Inspection Engine's buffer. The following defines the field contents for each of the fixed
+ * templates. Additionally, 3 user-definable templates can be set up via the definitions
+ * in RTL838X_ACL_TMPLTE_CTRL control registers.
+ * TODO: See all src/app/diag_v2/src/diag_pie.c
+ */
+#define N_FIXED_TEMPLATES 5
+static enum template_field_id fixed_templates[N_FIXED_TEMPLATES][N_FIXED_FIELDS] =
+{
+ {
+ TEMPLATE_FIELD_SPM0, TEMPLATE_FIELD_SPM1, TEMPLATE_FIELD_OTAG,
+ TEMPLATE_FIELD_SMAC0, TEMPLATE_FIELD_SMAC1, TEMPLATE_FIELD_SMAC2,
+ TEMPLATE_FIELD_DMAC0, TEMPLATE_FIELD_DMAC1, TEMPLATE_FIELD_DMAC2,
+ TEMPLATE_FIELD_ETHERTYPE, TEMPLATE_FIELD_ITAG, TEMPLATE_FIELD_RANGE_CHK
+ }, {
+ TEMPLATE_FIELD_SIP0, TEMPLATE_FIELD_SIP1, TEMPLATE_FIELD_DIP0,
+ TEMPLATE_FIELD_DIP1,TEMPLATE_FIELD_IP_TOS_PROTO, TEMPLATE_FIELD_L4_SPORT,
+ TEMPLATE_FIELD_L4_DPORT, TEMPLATE_FIELD_ICMP_IGMP, TEMPLATE_FIELD_ITAG,
+ TEMPLATE_FIELD_RANGE_CHK, TEMPLATE_FIELD_SPM0, TEMPLATE_FIELD_SPM1
+ }, {
+ TEMPLATE_FIELD_DMAC0, TEMPLATE_FIELD_DMAC1, TEMPLATE_FIELD_DMAC2,
+ TEMPLATE_FIELD_ITAG, TEMPLATE_FIELD_ETHERTYPE, TEMPLATE_FIELD_IP_TOS_PROTO,
+ TEMPLATE_FIELD_L4_DPORT, TEMPLATE_FIELD_L4_SPORT, TEMPLATE_FIELD_SIP0,
+ TEMPLATE_FIELD_SIP1, TEMPLATE_FIELD_DIP0, TEMPLATE_FIELD_DIP1
+ }, {
+ TEMPLATE_FIELD_DIP0, TEMPLATE_FIELD_DIP1, TEMPLATE_FIELD_DIP2,
+ TEMPLATE_FIELD_DIP3, TEMPLATE_FIELD_DIP4, TEMPLATE_FIELD_DIP5,
+ TEMPLATE_FIELD_DIP6, TEMPLATE_FIELD_DIP7, TEMPLATE_FIELD_L4_DPORT,
+ TEMPLATE_FIELD_L4_SPORT, TEMPLATE_FIELD_ICMP_IGMP, TEMPLATE_FIELD_IP_TOS_PROTO
+ }, {
+ TEMPLATE_FIELD_SIP0, TEMPLATE_FIELD_SIP1, TEMPLATE_FIELD_SIP2,
+ TEMPLATE_FIELD_SIP3, TEMPLATE_FIELD_SIP4, TEMPLATE_FIELD_SIP5,
+ TEMPLATE_FIELD_SIP6, TEMPLATE_FIELD_SIP7, TEMPLATE_FIELD_ITAG,
+ TEMPLATE_FIELD_RANGE_CHK, TEMPLATE_FIELD_SPM0, TEMPLATE_FIELD_SPM1
+ },
+};
+
void rtl838x_print_matrix(void)
{
unsigned volatile int *ptr8;
@@ -535,6 +625,916 @@ static void rtl838x_init_eee(struct rtl838x_switch_priv *priv, bool enable)
priv->eee_enabled = enable;
}
+static void rtl838x_pie_lookup_enable(struct rtl838x_switch_priv *priv, int index)
+{
+ int block = index / PIE_BLOCK_SIZE;
+ u32 block_state = sw_r32(RTL838X_ACL_BLK_LOOKUP_CTRL);
+
+ // Make sure rule-lookup is enabled in the block
+ if (!(block_state & BIT(block)))
+ sw_w32(block_state | BIT(block), RTL838X_ACL_BLK_LOOKUP_CTRL);
+}
+
+static void rtl838x_pie_rule_del(struct rtl838x_switch_priv *priv, int index_from, int index_to)
+{
+ int block_from = index_from / PIE_BLOCK_SIZE;
+ int block_to = index_to / PIE_BLOCK_SIZE;
+ u32 v = (index_from << 1)| (index_to << 12 ) | BIT(0);
+ int block;
+ u32 block_state;
+
+ pr_debug("%s: from %d to %d\n", __func__, index_from, index_to);
+ mutex_lock(&priv->reg_mutex);
+
+ // Remember currently active blocks
+ block_state = sw_r32(RTL838X_ACL_BLK_LOOKUP_CTRL);
+
+ // Make sure rule-lookup is disabled in the relevant blocks
+ for (block = block_from; block <= block_to; block++) {
+ if (block_state & BIT(block))
+ sw_w32(block_state & (~BIT(block)), RTL838X_ACL_BLK_LOOKUP_CTRL);
+ }
+
+ // Write from-to and execute bit into control register
+ sw_w32(v, RTL838X_ACL_CLR_CTRL);
+
+ // Wait until command has completed
+ do {
+ } while (sw_r32(RTL838X_ACL_CLR_CTRL) & BIT(0));
+
+ // Re-enable rule lookup
+ for (block = block_from; block <= block_to; block++) {
+ if (!(block_state & BIT(block)))
+ sw_w32(block_state | BIT(block), RTL838X_ACL_BLK_LOOKUP_CTRL);
+ }
+
+ mutex_unlock(&priv->reg_mutex);
+}
+
+/*
+ * Reads the intermediate representation of the templated match-fields of the
+ * PIE rule in the pie_rule structure and fills in the raw data fields in the
+ * raw register space r[].
+ * The register space configuration size is identical for the RTL8380/90 and RTL9300,
+ * however the RTL9310 has 2 more registers / fields and the physical field-ids
+ * are specific to every platform.
+ */
+static void rtl838x_write_pie_templated(u32 r[], struct pie_rule *pr, enum template_field_id t[])
+{
+ int i;
+ enum template_field_id field_type;
+ u16 data, data_m;
+
+ for (i = 0; i < N_FIXED_FIELDS; i++) {
+ field_type = t[i];
+ data = data_m = 0;
+
+ switch (field_type) {
+ case TEMPLATE_FIELD_SPM0:
+ data = pr->spm;
+ data_m = pr->spm_m;
+ break;
+ case TEMPLATE_FIELD_SPM1:
+ data = pr->spm >> 16;
+ data_m = pr->spm_m >> 16;
+ break;
+ case TEMPLATE_FIELD_OTAG:
+ data = pr->otag;
+ data_m = pr->otag_m;
+ break;
+ case TEMPLATE_FIELD_SMAC0:
+ data = pr->smac[4];
+ data = (data << 8) | pr->smac[5];
+ data_m = pr->smac_m[4];
+ data_m = (data_m << 8) | pr->smac_m[5];
+ break;
+ case TEMPLATE_FIELD_SMAC1:
+ data = pr->smac[2];
+ data = (data << 8) | pr->smac[3];
+ data_m = pr->smac_m[2];
+ data_m = (data_m << 8) | pr->smac_m[3];
+ break;
+ case TEMPLATE_FIELD_SMAC2:
+ data = pr->smac[0];
+ data = (data << 8) | pr->smac[1];
+ data_m = pr->smac_m[0];
+ data_m = (data_m << 8) | pr->smac_m[1];
+ break;
+ case TEMPLATE_FIELD_DMAC0:
+ data = pr->dmac[4];
+ data = (data << 8) | pr->dmac[5];
+ data_m = pr->dmac_m[4];
+ data_m = (data_m << 8) | pr->dmac_m[5];
+ break;
+ case TEMPLATE_FIELD_DMAC1:
+ data = pr->dmac[2];
+ data = (data << 8) | pr->dmac[3];
+ data_m = pr->dmac_m[2];
+ data_m = (data_m << 8) | pr->dmac_m[3];
+ break;
+ case TEMPLATE_FIELD_DMAC2:
+ data = pr->dmac[0];
+ data = (data << 8) | pr->dmac[1];
+ data_m = pr->dmac_m[0];
+ data_m = (data_m << 8) | pr->dmac_m[1];
+ break;
+ case TEMPLATE_FIELD_ETHERTYPE:
+ data = pr->ethertype;
+ data_m = pr->ethertype_m;
+ break;
+ case TEMPLATE_FIELD_ITAG:
+ data = pr->itag;
+ data_m = pr->itag_m;
+ break;
+ case TEMPLATE_FIELD_RANGE_CHK:
+ data = pr->field_range_check;
+ data_m = pr->field_range_check_m;
+ break;
+ case TEMPLATE_FIELD_SIP0:
+ if (pr->is_ipv6) {
+ data = pr->sip6.s6_addr16[7];
+ data_m = pr->sip6_m.s6_addr16[7];
+ } else {
+ data = pr->sip;
+ data_m = pr->sip_m;
+ }
+ break;
+ case TEMPLATE_FIELD_SIP1:
+ if (pr->is_ipv6) {
+ data = pr->sip6.s6_addr16[6];
+ data_m = pr->sip6_m.s6_addr16[6];
+ } else {
+ data = pr->sip >> 16;
+ data_m = pr->sip_m >> 16;
+ }
+ break;
+
+ case TEMPLATE_FIELD_SIP2:
+ case TEMPLATE_FIELD_SIP3:
+ case TEMPLATE_FIELD_SIP4:
+ case TEMPLATE_FIELD_SIP5:
+ case TEMPLATE_FIELD_SIP6:
+ case TEMPLATE_FIELD_SIP7:
+ data = pr->sip6.s6_addr16[5 - (field_type - TEMPLATE_FIELD_SIP2)];
+ data_m = pr->sip6_m.s6_addr16[5 - (field_type - TEMPLATE_FIELD_SIP2)];
+ break;
+
+ case TEMPLATE_FIELD_DIP0:
+ if (pr->is_ipv6) {
+ data = pr->dip6.s6_addr16[7];
+ data_m = pr->dip6_m.s6_addr16[7];
+ } else {
+ data = pr->dip;
+ data_m = pr->dip_m;
+ }
+ break;
+
+ case TEMPLATE_FIELD_DIP1:
+ if (pr->is_ipv6) {
+ data = pr->dip6.s6_addr16[6];
+ data_m = pr->dip6_m.s6_addr16[6];
+ } else {
+ data = pr->dip >> 16;
+ data_m = pr->dip_m >> 16;
+ }
+ break;
+
+ case TEMPLATE_FIELD_DIP2:
+ case TEMPLATE_FIELD_DIP3:
+ case TEMPLATE_FIELD_DIP4:
+ case TEMPLATE_FIELD_DIP5:
+ case TEMPLATE_FIELD_DIP6:
+ case TEMPLATE_FIELD_DIP7:
+ data = pr->dip6.s6_addr16[5 - (field_type - TEMPLATE_FIELD_DIP2)];
+ data_m = pr->dip6_m.s6_addr16[5 - (field_type - TEMPLATE_FIELD_DIP2)];
+ break;
+
+ case TEMPLATE_FIELD_IP_TOS_PROTO:
+ data = pr->tos_proto;
+ data_m = pr->tos_proto_m;
+ break;
+ case TEMPLATE_FIELD_L4_SPORT:
+ data = pr->sport;
+ data_m = pr->sport_m;
+ break;
+ case TEMPLATE_FIELD_L4_DPORT:
+ data = pr->dport;
+ data_m = pr->dport_m;
+ break;
+ case TEMPLATE_FIELD_ICMP_IGMP:
+ data = pr->icmp_igmp;
+ data_m = pr->icmp_igmp_m;
+ break;
+ default:
+ pr_info("%s: unknown field %d\n", __func__, field_type);
+ continue;
+ }
+ if (!(i % 2)) {
+ r[5 - i / 2] = data;
+ r[12 - i / 2] = data_m;
+ } else {
+ r[5 - i / 2] |= ((u32)data) << 16;
+ r[12 - i / 2] |= ((u32)data_m) << 16;
+ }
+ }
+}
+
+/*
+ * Creates the intermediate representation of the templated match-fields of the
+ * PIE rule in the pie_rule structure by reading the raw data fields in the
+ * raw register space r[].
+ * The register space configuration size is identical for the RTL8380/90 and RTL9300,
+ * however the RTL9310 has 2 more registers / fields and the physical field-ids
+ */
+static void rtl838x_read_pie_templated(u32 r[], struct pie_rule *pr, enum template_field_id t[])
+{
+ int i;
+ enum template_field_id field_type;
+ u16 data, data_m;
+
+ for (i = 0; i < N_FIXED_FIELDS; i++) {
+ field_type = t[i];
+ if (!(i % 2)) {
+ data = r[5 - i / 2];
+ data_m = r[12 - i / 2];
+ } else {
+ data = r[5 - i / 2] >> 16;
+ data_m = r[12 - i / 2] >> 16;
+ }
+
+ switch (field_type) {
+ case TEMPLATE_FIELD_SPM0:
+ pr->spm = (pr->spn << 16) | data;
+ pr->spm_m = (pr->spn << 16) | data_m;
+ break;
+ case TEMPLATE_FIELD_SPM1:
+ pr->spm = data;
+ pr->spm_m = data_m;
+ break;
+ case TEMPLATE_FIELD_OTAG:
+ pr->otag = data;
+ pr->otag_m = data_m;
+ break;
+ case TEMPLATE_FIELD_SMAC0:
+ pr->smac[4] = data >> 8;
+ pr->smac[5] = data;
+ pr->smac_m[4] = data >> 8;
+ pr->smac_m[5] = data;
+ break;
+ case TEMPLATE_FIELD_SMAC1:
+ pr->smac[2] = data >> 8;
+ pr->smac[3] = data;
+ pr->smac_m[2] = data >> 8;
+ pr->smac_m[3] = data;
+ break;
+ case TEMPLATE_FIELD_SMAC2:
+ pr->smac[0] = data >> 8;
+ pr->smac[1] = data;
+ pr->smac_m[0] = data >> 8;
+ pr->smac_m[1] = data;
+ break;
+ case TEMPLATE_FIELD_DMAC0:
+ pr->dmac[4] = data >> 8;
+ pr->dmac[5] = data;
+ pr->dmac_m[4] = data >> 8;
+ pr->dmac_m[5] = data;
+ break;
+ case TEMPLATE_FIELD_DMAC1:
+ pr->dmac[2] = data >> 8;
+ pr->dmac[3] = data;
+ pr->dmac_m[2] = data >> 8;
+ pr->dmac_m[3] = data;
+ break;
+ case TEMPLATE_FIELD_DMAC2:
+ pr->dmac[0] = data >> 8;
+ pr->dmac[1] = data;
+ pr->dmac_m[0] = data >> 8;
+ pr->dmac_m[1] = data;
+ break;
+ case TEMPLATE_FIELD_ETHERTYPE:
+ pr->ethertype = data;
+ pr->ethertype_m = data_m;
+ break;
+ case TEMPLATE_FIELD_ITAG:
+ pr->itag = data;
+ pr->itag_m = data_m;
+ break;
+ case TEMPLATE_FIELD_RANGE_CHK:
+ pr->field_range_check = data;
+ pr->field_range_check_m = data_m;
+ break;
+ case TEMPLATE_FIELD_SIP0:
+ pr->sip = data;
+ pr->sip_m = data_m;
+ break;
+ case TEMPLATE_FIELD_SIP1:
+ pr->sip = (pr->sip << 16) | data;
+ pr->sip_m = (pr->sip << 16) | data_m;
+ break;
+ case TEMPLATE_FIELD_SIP2:
+ pr->is_ipv6 = true;
+ // Make use of limitiations on the position of the match values
+ ipv6_addr_set(&pr->sip6, pr->sip, r[5 - i / 2],
+ r[4 - i / 2], r[3 - i / 2]);
+ ipv6_addr_set(&pr->sip6_m, pr->sip_m, r[5 - i / 2],
+ r[4 - i / 2], r[3 - i / 2]);
+ case TEMPLATE_FIELD_SIP3:
+ case TEMPLATE_FIELD_SIP4:
+ case TEMPLATE_FIELD_SIP5:
+ case TEMPLATE_FIELD_SIP6:
+ case TEMPLATE_FIELD_SIP7:
+ break;
+
+ case TEMPLATE_FIELD_DIP0:
+ pr->dip = data;
+ pr->dip_m = data_m;
+ break;
+ case TEMPLATE_FIELD_DIP1:
+ pr->dip = (pr->dip << 16) | data;
+ pr->dip_m = (pr->dip << 16) | data_m;
+ break;
+ case TEMPLATE_FIELD_DIP2:
+ pr->is_ipv6 = true;
+ ipv6_addr_set(&pr->dip6, pr->dip, r[5 - i / 2],
+ r[4 - i / 2], r[3 - i / 2]);
+ ipv6_addr_set(&pr->dip6_m, pr->dip_m, r[5 - i / 2],
+ r[4 - i / 2], r[3 - i / 2]);
+ case TEMPLATE_FIELD_DIP3:
+ case TEMPLATE_FIELD_DIP4:
+ case TEMPLATE_FIELD_DIP5:
+ case TEMPLATE_FIELD_DIP6:
+ case TEMPLATE_FIELD_DIP7:
+ break;
+ case TEMPLATE_FIELD_IP_TOS_PROTO:
+ pr->tos_proto = data;
+ pr->tos_proto_m = data_m;
+ break;
+ case TEMPLATE_FIELD_L4_SPORT:
+ pr->sport = data;
+ pr->sport_m = data_m;
+ break;
+ case TEMPLATE_FIELD_L4_DPORT:
+ pr->dport = data;
+ pr->dport_m = data_m;
+ break;
+ case TEMPLATE_FIELD_ICMP_IGMP:
+ pr->icmp_igmp = data;
+ pr->icmp_igmp_m = data_m;
+ break;
+ default:
+ pr_info("%s: unknown field %d\n", __func__, field_type);
+ }
+ }
+}
+
+static void rtl838x_read_pie_fixed_fields(u32 r[], struct pie_rule *pr)
+{
+ pr->spmmask_fix = (r[6] >> 22) & 0x3;
+ pr->spn = (r[6] >> 16) & 0x3f;
+ pr->mgnt_vlan = (r[6] >> 15) & 1;
+ pr->dmac_hit_sw = (r[6] >> 14) & 1;
+ pr->not_first_frag = (r[6] >> 13) & 1;
+ pr->frame_type_l4 = (r[6] >> 10) & 7;
+ pr->frame_type = (r[6] >> 8) & 3;
+ pr->otag_fmt = (r[6] >> 7) & 1;
+ pr->itag_fmt = (r[6] >> 6) & 1;
+ pr->otag_exist = (r[6] >> 5) & 1;
+ pr->itag_exist = (r[6] >> 4) & 1;
+ pr->frame_type_l2 = (r[6] >> 2) & 3;
+ pr->tid = r[6] & 3;
+
+ pr->spmmask_fix_m = (r[13] >> 22) & 0x3;
+ pr->spn_m = (r[13] >> 16) & 0x3f;
+ pr->mgnt_vlan_m = (r[13] >> 15) & 1;
+ pr->dmac_hit_sw_m = (r[13] >> 14) & 1;
+ pr->not_first_frag_m = (r[13] >> 13) & 1;
+ pr->frame_type_l4_m = (r[13] >> 10) & 7;
+ pr->frame_type_m = (r[13] >> 8) & 3;
+ pr->otag_fmt_m = (r[13] >> 7) & 1;
+ pr->itag_fmt_m = (r[13] >> 6) & 1;
+ pr->otag_exist_m = (r[13] >> 5) & 1;
+ pr->itag_exist_m = (r[13] >> 4) & 1;
+ pr->frame_type_l2_m = (r[13] >> 2) & 3;
+ pr->tid_m = r[13] & 3;
+
+ pr->valid = r[14] & BIT(31);
+ pr->cond_not = r[14] & BIT(30);
+ pr->cond_and1 = r[14] & BIT(29);
+ pr->cond_and2 = r[14] & BIT(28);
+ pr->ivalid = r[14] & BIT(27);
+
+ pr->drop = (r[17] >> 14) & 3;
+ pr->fwd_sel = r[17] & BIT(13);
+ pr->ovid_sel = r[17] & BIT(12);
+ pr->ivid_sel = r[17] & BIT(11);
+ pr->flt_sel = r[17] & BIT(10);
+ pr->log_sel = r[17] & BIT(9);
+ pr->rmk_sel = r[17] & BIT(8);
+ pr->meter_sel = r[17] & BIT(7);
+ pr->tagst_sel = r[17] & BIT(6);
+ pr->mir_sel = r[17] & BIT(5);
+ pr->nopri_sel = r[17] & BIT(4);
+ pr->cpupri_sel = r[17] & BIT(3);
+ pr->otpid_sel = r[17] & BIT(2);
+ pr->itpid_sel = r[17] & BIT(1);
+ pr->shaper_sel = r[17] & BIT(0);
+}
+
+static void rtl838x_write_pie_fixed_fields(u32 r[], struct pie_rule *pr)
+{
+ r[6] = ((u32) (pr->spmmask_fix & 0x3)) << 22;
+ r[6] |= ((u32) (pr->spn & 0x3f)) << 16;
+ r[6] |= pr->mgnt_vlan ? BIT(15) : 0;
+ r[6] |= pr->dmac_hit_sw ? BIT(14) : 0;
+ r[6] |= pr->not_first_frag ? BIT(13) : 0;
+ r[6] |= ((u32) (pr->frame_type_l4 & 0x7)) << 10;
+ r[6] |= ((u32) (pr->frame_type & 0x3)) << 8;
+ r[6] |= pr->otag_fmt ? BIT(7) : 0;
+ r[6] |= pr->itag_fmt ? BIT(6) : 0;
+ r[6] |= pr->otag_exist ? BIT(5) : 0;
+ r[6] |= pr->itag_exist ? BIT(4) : 0;
+ r[6] |= ((u32) (pr->frame_type_l2 & 0x3)) << 2;
+ r[6] |= ((u32) (pr->tid & 0x3));
+
+ r[13] = ((u32) (pr->spmmask_fix_m & 0x3)) << 22;
+ r[13] |= ((u32) (pr->spn_m & 0x3f)) << 16;
+ r[13] |= pr->mgnt_vlan_m ? BIT(15) : 0;
+ r[13] |= pr->dmac_hit_sw_m ? BIT(14) : 0;
+ r[13] |= pr->not_first_frag_m ? BIT(13) : 0;
+ r[13] |= ((u32) (pr->frame_type_l4_m & 0x7)) << 10;
+ r[13] |= ((u32) (pr->frame_type_m & 0x3)) << 8;
+ r[13] |= pr->otag_fmt_m ? BIT(7) : 0;
+ r[13] |= pr->itag_fmt_m ? BIT(6) : 0;
+ r[13] |= pr->otag_exist_m ? BIT(5) : 0;
+ r[13] |= pr->itag_exist_m ? BIT(4) : 0;
+ r[13] |= ((u32) (pr->frame_type_l2_m & 0x3)) << 2;
+ r[13] |= ((u32) (pr->tid_m & 0x3));
+
+ r[14] = pr->valid ? BIT(31) : 0;
+ r[14] |= pr->cond_not ? BIT(30) : 0;
+ r[14] |= pr->cond_and1 ? BIT(29) : 0;
+ r[14] |= pr->cond_and2 ? BIT(28) : 0;
+ r[14] |= pr->ivalid ? BIT(27) : 0;
+
+ if (pr->drop)
+ r[17] = 0x1 << 14; // Standard drop action
+ else
+ r[17] = 0;
+ r[17] |= pr->fwd_sel ? BIT(13) : 0;
+ r[17] |= pr->ovid_sel ? BIT(12) : 0;
+ r[17] |= pr->ivid_sel ? BIT(11) : 0;
+ r[17] |= pr->flt_sel ? BIT(10) : 0;
+ r[17] |= pr->log_sel ? BIT(9) : 0;
+ r[17] |= pr->rmk_sel ? BIT(8) : 0;
+ r[17] |= pr->meter_sel ? BIT(7) : 0;
+ r[17] |= pr->tagst_sel ? BIT(6) : 0;
+ r[17] |= pr->mir_sel ? BIT(5) : 0;
+ r[17] |= pr->nopri_sel ? BIT(4) : 0;
+ r[17] |= pr->cpupri_sel ? BIT(3) : 0;
+ r[17] |= pr->otpid_sel ? BIT(2) : 0;
+ r[17] |= pr->itpid_sel ? BIT(1) : 0;
+ r[17] |= pr->shaper_sel ? BIT(0) : 0;
+}
+
+static int rtl838x_write_pie_action(u32 r[], struct pie_rule *pr)
+{
+ u16 *aif = (u16 *)&r[17];
+ u16 data;
+ int fields_used = 0;
+
+ aif--;
+
+ pr_debug("%s, at %08x\n", __func__, (u32)aif);
+ /* Multiple actions can be linked to a match of a PIE rule,
+ * they have different precedence depending on their type and this precedence
+ * defines which Action Information Field (0-4) in the IACL table stores
+ * the additional data of the action (like e.g. the port number a packet is
+ * forwarded to) */
+ // TODO: count bits in selectors to limit to a maximum number of actions
+ if (pr->fwd_sel) { // Forwarding action
+ data = pr->fwd_act << 13;
+ data |= pr->fwd_data;
+ data |= pr->bypass_all ? BIT(12) : 0;
+ data |= pr->bypass_ibc_sc ? BIT(11) : 0;
+ data |= pr->bypass_igr_stp ? BIT(10) : 0;
+ *aif-- = data;
+ fields_used++;
+ }
+
+ if (pr->ovid_sel) { // Outer VID action
+ data = (pr->ovid_act & 0x3) << 12;
+ data |= pr->ovid_data;
+ *aif-- = data;
+ fields_used++;
+ }
+
+ if (pr->ivid_sel) { // Inner VID action
+ data = (pr->ivid_act & 0x3) << 12;
+ data |= pr->ivid_data;
+ *aif-- = data;
+ fields_used++;
+ }
+
+ if (pr->flt_sel) { // Filter action
+ *aif-- = pr->flt_data;
+ fields_used++;
+ }
+
+ if (pr->log_sel) { // Log action
+ if (fields_used >= 4)
+ return -1;
+ *aif-- = pr->log_data;
+ fields_used++;
+ }
+
+ if (pr->rmk_sel) { // Remark action
+ if (fields_used >= 4)
+ return -1;
+ *aif-- = pr->rmk_data;
+ fields_used++;
+ }
+
+ if (pr->meter_sel) { // Meter action
+ if (fields_used >= 4)
+ return -1;
+ *aif-- = pr->meter_data;
+ fields_used++;
+ }
+
+ if (pr->tagst_sel) { // Egress Tag Status action
+ if (fields_used >= 4)
+ return -1;
+ *aif-- = pr->tagst_data;
+ fields_used++;
+ }
+
+ if (pr->mir_sel) { // Mirror action
+ if (fields_used >= 4)
+ return -1;
+ *aif-- = pr->mir_data;
+ fields_used++;
+ }
+
+ if (pr->nopri_sel) { // Normal Priority action
+ if (fields_used >= 4)
+ return -1;
+ *aif-- = pr->nopri_data;
+ fields_used++;
+ }
+
+ if (pr->cpupri_sel) { // CPU Priority action
+ if (fields_used >= 4)
+ return -1;
+ *aif-- = pr->nopri_data;
+ fields_used++;
+ }
+
+ if (pr->otpid_sel) { // OTPID action
+ if (fields_used >= 4)
+ return -1;
+ *aif-- = pr->otpid_data;
+ fields_used++;
+ }
+
+ if (pr->itpid_sel) { // ITPID action
+ if (fields_used >= 4)
+ return -1;
+ *aif-- = pr->itpid_data;
+ fields_used++;
+ }
+
+ if (pr->shaper_sel) { // Traffic shaper action
+ if (fields_used >= 4)
+ return -1;
+ *aif-- = pr->shaper_data;
+ fields_used++;
+ }
+
+ return 0;
+}
+
+static void rtl838x_read_pie_action(u32 r[], struct pie_rule *pr)
+{
+ u16 *aif = (u16 *)&r[17];
+
+ aif--;
+
+ pr_debug("%s, at %08x\n", __func__, (u32)aif);
+ if (pr->drop)
+ pr_debug("%s: Action Drop: %d", __func__, pr->drop);
+
+ if (pr->fwd_sel){ // Forwarding action
+ pr->fwd_act = *aif >> 13;
+ pr->fwd_data = *aif--;
+ pr->bypass_all = pr->fwd_data & BIT(12);
+ pr->bypass_ibc_sc = pr->fwd_data & BIT(11);
+ pr->bypass_igr_stp = pr->fwd_data & BIT(10);
+ if (pr->bypass_all || pr->bypass_ibc_sc || pr->bypass_igr_stp)
+ pr->bypass_sel = true;
+ }
+ if (pr->ovid_sel) // Outer VID action
+ pr->ovid_data = *aif--;
+ if (pr->ivid_sel) // Inner VID action
+ pr->ivid_data = *aif--;
+ if (pr->flt_sel) // Filter action
+ pr->flt_data = *aif--;
+ if (pr->log_sel) // Log action
+ pr->log_data = *aif--;
+ if (pr->rmk_sel) // Remark action
+ pr->rmk_data = *aif--;
+ if (pr->meter_sel) // Meter action
+ pr->meter_data = *aif--;
+ if (pr->tagst_sel) // Egress Tag Status action
+ pr->tagst_data = *aif--;
+ if (pr->mir_sel) // Mirror action
+ pr->mir_data = *aif--;
+ if (pr->nopri_sel) // Normal Priority action
+ pr->nopri_data = *aif--;
+ if (pr->cpupri_sel) // CPU Priority action
+ pr->nopri_data = *aif--;
+ if (pr->otpid_sel) // OTPID action
+ pr->otpid_data = *aif--;
+ if (pr->itpid_sel) // ITPID action
+ pr->itpid_data = *aif--;
+ if (pr->shaper_sel) // Traffic shaper action
+ pr->shaper_data = *aif--;
+}
+
+static void rtl838x_pie_rule_dump_raw(u32 r[])
+{
+ pr_info("Raw IACL table entry:\n");
+ pr_info("Match : %08x %08x %08x %08x %08x %08x\n", r[0], r[1], r[2], r[3], r[4], r[5]);
+ pr_info("Fixed : %08x\n", r[6]);
+ pr_info("Match M: %08x %08x %08x %08x %08x %08x\n", r[7], r[8], r[9], r[10], r[11], r[12]);
+ pr_info("Fixed M: %08x\n", r[13]);
+ pr_info("AIF : %08x %08x %08x\n", r[14], r[15], r[16]);
+ pr_info("Sel : %08x\n", r[17]);
+}
+
+static void rtl838x_pie_rule_dump(struct pie_rule *pr)
+{
+ pr_info("Drop: %d, fwd: %d, ovid: %d, ivid: %d, flt: %d, log: %d, rmk: %d, meter: %d tagst: %d, mir: %d, nopri: %d, cpupri: %d, otpid: %d, itpid: %d, shape: %d\n",
+ pr->drop, pr->fwd_sel, pr->ovid_sel, pr->ivid_sel, pr->flt_sel, pr->log_sel, pr->rmk_sel, pr->log_sel, pr->tagst_sel, pr->mir_sel, pr->nopri_sel,
+ pr->cpupri_sel, pr->otpid_sel, pr->itpid_sel, pr->shaper_sel);
+ if (pr->fwd_sel)
+ pr_info("FWD: %08x\n", pr->fwd_data);
+ pr_info("TID: %x, %x\n", pr->tid, pr->tid_m);
+}
+
+static int rtl838x_pie_rule_read(struct rtl838x_switch_priv *priv, int idx, struct pie_rule *pr)
+{
+ // Read IACL table (1) via register 0
+ struct table_reg *q = rtl_table_get(RTL8380_TBL_0, 1);
+ u32 r[18];
+ int i;
+ int block = idx / PIE_BLOCK_SIZE;
+ u32 t_select = sw_r32(RTL838X_ACL_BLK_TMPLTE_CTRL(block));
+
+ memset(pr, 0, sizeof(*pr));
+ rtl_table_read(q, idx);
+ for (i = 0; i < 18; i++)
+ r[i] = sw_r32(rtl_table_data(q, i));
+
+ rtl_table_release(q);
+
+ rtl838x_read_pie_fixed_fields(r, pr);
+ if (!pr->valid)
+ return 0;
+
+ pr_info("%s: template_selectors %08x, tid: %d\n", __func__, t_select, pr->tid);
+ rtl838x_pie_rule_dump_raw(r);
+
+ rtl838x_read_pie_templated(r, pr, fixed_templates[(t_select >> (pr->tid * 3)) & 0x7]);
+
+ rtl838x_read_pie_action(r, pr);
+
+ return 0;
+}
+
+static int rtl838x_pie_rule_write(struct rtl838x_switch_priv *priv, int idx, struct pie_rule *pr)
+{
+ // Access IACL table (1) via register 0
+ struct table_reg *q = rtl_table_get(RTL8380_TBL_0, 1);
+ u32 r[18];
+ int i, err = 0;
+ int block = idx / PIE_BLOCK_SIZE;
+ u32 t_select = sw_r32(RTL838X_ACL_BLK_TMPLTE_CTRL(block));
+
+ pr_debug("%s: %d, t_select: %08x\n", __func__, idx, t_select);
+
+ for (i = 0; i < 18; i++)
+ r[i] = 0;
+
+ if (!pr->valid)
+ goto err_out;
+
+ rtl838x_write_pie_fixed_fields(r, pr);
+
+ pr_debug("%s: template %d\n", __func__, (t_select >> (pr->tid * 3)) & 0x7);
+ rtl838x_write_pie_templated(r, pr, fixed_templates[(t_select >> (pr->tid * 3)) & 0x7]);
+
+ if (rtl838x_write_pie_action(r, pr)) {
+ pr_err("Rule actions too complex\n");
+ goto err_out;
+ }
+
+// rtl838x_pie_rule_dump_raw(r);
+
+ for (i = 0; i < 18; i++)
+ sw_w32(r[i], rtl_table_data(q, i));
+
+err_out:
+ rtl_table_write(q, idx);
+ rtl_table_release(q);
+
+ return err;
+}
+
+static bool rtl838x_pie_templ_has(int t, enum template_field_id field_type)
+{
+ int i;
+ enum template_field_id ft;
+
+ for (i = 0; i < N_FIXED_FIELDS; i++) {
+ ft = fixed_templates[t][i];
+ if (field_type == ft)
+ return true;
+ }
+
+ return false;
+}
+
+static int rtl838x_pie_verify_template(struct rtl838x_switch_priv *priv,
+ struct pie_rule *pr, int t, int block)
+{
+ int i;
+
+ if (!pr->is_ipv6 && pr->sip_m && !rtl838x_pie_templ_has(t, TEMPLATE_FIELD_SIP0))
+ return -1;
+
+ if (!pr->is_ipv6 && pr->dip_m && !rtl838x_pie_templ_has(t, TEMPLATE_FIELD_DIP0))
+ return -1;
+
+ if (pr->is_ipv6) {
+ if ((pr->sip6_m.s6_addr32[0] || pr->sip6_m.s6_addr32[1]
+ || pr->sip6_m.s6_addr32[2] || pr->sip6_m.s6_addr32[3])
+ && !rtl838x_pie_templ_has(t, TEMPLATE_FIELD_SIP2))
+ return -1;
+ if ((pr->dip6_m.s6_addr32[0] || pr->dip6_m.s6_addr32[1]
+ || pr->dip6_m.s6_addr32[2] || pr->dip6_m.s6_addr32[3])
+ && !rtl838x_pie_templ_has(t, TEMPLATE_FIELD_DIP2))
+ return -1;
+ }
+
+ if (ether_addr_to_u64(pr->smac) && !rtl838x_pie_templ_has(t, TEMPLATE_FIELD_SMAC0))
+ return -1;
+
+ if (ether_addr_to_u64(pr->dmac) && !rtl838x_pie_templ_has(t, TEMPLATE_FIELD_DMAC0))
+ return -1;
+
+ // TODO: Check more
+
+ i = find_first_zero_bit(&priv->pie_use_bm[block * 4], PIE_BLOCK_SIZE);
+
+ if (i >= PIE_BLOCK_SIZE)
+ return -1;
+
+ return i + PIE_BLOCK_SIZE * block;
+}
+
+static int rtl838x_pie_rule_add(struct rtl838x_switch_priv *priv, struct pie_rule *pr)
+{
+ int idx, block, j, t;
+
+ pr_debug("In %s\n", __func__);
+
+ mutex_lock(&priv->pie_mutex);
+
+ for (block = 0; block < priv->n_pie_blocks; block++) {
+ for (j = 0; j < 3; j++) {
+ t = (sw_r32(RTL838X_ACL_BLK_TMPLTE_CTRL(block)) >> (j * 3)) & 0x7;
+ pr_debug("Testing block %d, template %d, template id %d\n", block, j, t);
+ idx = rtl838x_pie_verify_template(priv, pr, t, block);
+ if (idx >= 0)
+ break;
+ }
+ if (j < 3)
+ break;
+ }
+
+ if (block >= priv->n_pie_blocks) {
+ mutex_unlock(&priv->pie_mutex);
+ return -EOPNOTSUPP;
+ }
+
+ pr_debug("Using block: %d, index %d, template-id %d\n", block, idx, j);
+ set_bit(idx, priv->pie_use_bm);
+
+ pr->valid = true;
+ pr->tid = j; // Mapped to template number
+ pr->tid_m = 0x3;
+ pr->id = idx;
+
+ rtl838x_pie_lookup_enable(priv, idx);
+ rtl838x_pie_rule_write(priv, idx, pr);
+
+ mutex_unlock(&priv->pie_mutex);
+ return 0;
+}
+
+static void rtl838x_pie_rule_rm(struct rtl838x_switch_priv *priv, struct pie_rule *pr)
+{
+ int idx = pr->id;
+
+ rtl838x_pie_rule_del(priv, idx, idx);
+ clear_bit(idx, priv->pie_use_bm);
+}
+
+/*
+ * Initializes the Packet Inspection Engine:
+ * powers it up, enables default matching templates for all blocks
+ * and clears all rules possibly installed by u-boot
+ */
+static void rtl838x_pie_init(struct rtl838x_switch_priv *priv)
+{
+ int i;
+ u32 template_selectors;
+
+ mutex_init(&priv->pie_mutex);
+
+ // Enable ACL lookup on all ports, including CPU_PORT
+ for (i = 0; i <= priv->cpu_port; i++)
+ sw_w32(1, RTL838X_ACL_PORT_LOOKUP_CTRL(i));
+
+ // Power on all PIE blocks
+ for (i = 0; i < priv->n_pie_blocks; i++)
+ sw_w32_mask(0, BIT(i), RTL838X_ACL_BLK_PWR_CTRL);
+
+ // Include IPG in metering
+ sw_w32(1, RTL838X_METER_GLB_CTRL);
+
+ // Delete all present rules
+ rtl838x_pie_rule_del(priv, 0, priv->n_pie_blocks * PIE_BLOCK_SIZE - 1);
+
+ // Routing bypasses source port filter: disable write-protection, first
+ sw_w32_mask(0, 3, RTL838X_INT_RW_CTRL);
+ sw_w32_mask(0, 1, RTL838X_DMY_REG27);
+ sw_w32_mask(3, 0, RTL838X_INT_RW_CTRL);
+
+ // Enable predefined templates 0, 1 and 2 for even blocks
+ template_selectors = 0 | (1 << 3) | (2 << 6);
+ for (i = 0; i < 6; i += 2)
+ sw_w32(template_selectors, RTL838X_ACL_BLK_TMPLTE_CTRL(i));
+
+ // Enable predefined templates 0, 3 and 4 (IPv6 support) for odd blocks
+ template_selectors = 0 | (3 << 3) | (4 << 6);
+ for (i = 1; i < priv->n_pie_blocks; i += 2)
+ sw_w32(template_selectors, RTL838X_ACL_BLK_TMPLTE_CTRL(i));
+
+ // Group each pair of physical blocks together to a logical block
+ sw_w32(0b10101010101, RTL838X_ACL_BLK_GROUP_CTRL);
+}
+
+static u32 rtl838x_packet_cntr_read(int counter)
+{
+ u32 v;
+
+ // Read LOG table (3) via register RTL8380_TBL_0
+ struct table_reg *r = rtl_table_get(RTL8380_TBL_0, 3);
+
+ pr_debug("In %s, id %d\n", __func__, counter);
+ rtl_table_read(r, counter / 2);
+
+ pr_debug("Registers: %08x %08x\n",
+ sw_r32(rtl_table_data(r, 0)), sw_r32(rtl_table_data(r, 1)));
+ // The table has a size of 2 registers
+ if (counter % 2)
+ v = sw_r32(rtl_table_data(r, 0));
+ else
+ v = sw_r32(rtl_table_data(r, 1));
+
+ rtl_table_release(r);
+
+ return v;
+}
+
+static void rtl838x_packet_cntr_clear(int counter)
+{
+ // Access LOG table (3) via register RTL8380_TBL_0
+ struct table_reg *r = rtl_table_get(RTL8380_TBL_0, 3);
+
+ pr_debug("In %s, id %d\n", __func__, counter);
+ // The table has a size of 2 registers
+ if (counter % 2)
+ sw_w32(0, rtl_table_data(r, 0));
+ else
+ sw_w32(0, rtl_table_data(r, 1));
+
+ rtl_table_write(r, counter / 2);
+
+ rtl_table_release(r);
+}
+
const struct rtl838x_reg rtl838x_reg = {
.mask_port_reg_be = rtl838x_mask_port_reg,
.set_port_reg_be = rtl838x_set_port_reg,
@@ -600,6 +1600,13 @@ const struct rtl838x_reg rtl838x_reg = {
.l2_hash_key = rtl838x_l2_hash_key,
.read_mcast_pmask = rtl838x_read_mcast_pmask,
.write_mcast_pmask = rtl838x_write_mcast_pmask,
+ .pie_init = rtl838x_pie_init,
+ .pie_rule_read = rtl838x_pie_rule_read,
+ .pie_rule_write = rtl838x_pie_rule_write,
+ .pie_rule_add = rtl838x_pie_rule_add,
+ .pie_rule_rm = rtl838x_pie_rule_rm,
+ .packet_cntr_read = rtl838x_packet_cntr_read,
+ .packet_cntr_clear = rtl838x_packet_cntr_clear,
};
irqreturn_t rtl838x_switch_irq(int irq, void *dev_id)
More information about the lede-commits
mailing list