[net-next PATCH V5 2/2] octeontx2-af: TC flower offload support for inner VLAN
From: Suman Ghosh
Date: Fri Aug 04 2023 - 01:01:21 EST
Extend the current TC flower offload support to enable filters matching
inner VLAN, and support offload of those filters to hardware.
Signed-off-by: Suman Ghosh <sumang@xxxxxxxxxxx>
---
.../net/ethernet/marvell/octeontx2/af/mbox.h | 1 +
.../net/ethernet/marvell/octeontx2/af/npc.h | 3 ++
.../marvell/octeontx2/af/rvu_debugfs.c | 5 ++++
.../marvell/octeontx2/af/rvu_npc_fs.c | 13 +++++++++
.../ethernet/marvell/octeontx2/nic/otx2_tc.c | 28 +++++++++++++++----
5 files changed, 44 insertions(+), 6 deletions(-)
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
index a8f3c8faf8af..e2f2b2179eef 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
@@ -1465,6 +1465,7 @@ struct flow_msg {
u8 ip_flag;
u8 next_header;
};
+ __be16 vlan_itci;
};
struct npc_install_flow_req {
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/npc.h b/drivers/net/ethernet/marvell/octeontx2/af/npc.h
index 534f20c0c5df..de9fbd98dfb7 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/npc.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/npc.h
@@ -184,6 +184,7 @@ enum key_fields {
NPC_VLAN_ETYPE_CTAG, /* 0x8100 */
NPC_VLAN_ETYPE_STAG, /* 0x88A8 */
NPC_OUTER_VID,
+ NPC_INNER_VID,
NPC_TOS,
NPC_IPFRAG_IPV4,
NPC_SIP_IPV4,
@@ -230,6 +231,8 @@ enum key_fields {
NPC_VLAN_TAG1,
/* outer vlan tci for double tagged frame */
NPC_VLAN_TAG2,
+ /* inner vlan tci for double tagged frame */
+ NPC_VLAN_TAG3,
/* other header fields programmed to extract but not of our interest */
NPC_UNKNOWN,
NPC_KEY_FIELDS_MAX,
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
index 7cd33edca365..d30e84803481 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
@@ -2787,6 +2787,11 @@ static void rvu_dbg_npc_mcam_show_flows(struct seq_file *s,
seq_printf(s, "mask 0x%x\n",
ntohs(rule->mask.vlan_tci));
break;
+ case NPC_INNER_VID:
+ seq_printf(s, "0x%x ", ntohs(rule->packet.vlan_itci));
+ seq_printf(s, "mask 0x%x\n",
+ ntohs(rule->mask.vlan_itci));
+ break;
case NPC_TOS:
seq_printf(s, "%d ", rule->packet.tos);
seq_printf(s, "mask 0x%x\n", rule->mask.tos);
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_fs.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_fs.c
index bb715e616fad..5c8f9fc15ff8 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_fs.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_fs.c
@@ -20,6 +20,7 @@ static const char * const npc_flow_names[] = {
[NPC_VLAN_ETYPE_CTAG] = "vlan ether type ctag",
[NPC_VLAN_ETYPE_STAG] = "vlan ether type stag",
[NPC_OUTER_VID] = "outer vlan id",
+ [NPC_INNER_VID] = "inner vlan id",
[NPC_TOS] = "tos",
[NPC_IPFRAG_IPV4] = "fragmented IPv4 header ",
[NPC_SIP_IPV4] = "ipv4 source ip",
@@ -328,6 +329,8 @@ static void npc_handle_multi_layer_fields(struct rvu *rvu, int blkaddr, u8 intf)
*/
struct npc_key_field *vlan_tag1;
struct npc_key_field *vlan_tag2;
+ /* Inner VLAN TCI for double tagged frames */
+ struct npc_key_field *vlan_tag3;
u64 *features;
u8 start_lid;
int i;
@@ -350,6 +353,7 @@ static void npc_handle_multi_layer_fields(struct rvu *rvu, int blkaddr, u8 intf)
etype_tag2 = &key_fields[NPC_ETYPE_TAG2];
vlan_tag1 = &key_fields[NPC_VLAN_TAG1];
vlan_tag2 = &key_fields[NPC_VLAN_TAG2];
+ vlan_tag3 = &key_fields[NPC_VLAN_TAG3];
/* if key profile programmed does not extract Ethertype at all */
if (!etype_ether->nr_kws && !etype_tag1->nr_kws && !etype_tag2->nr_kws) {
@@ -431,6 +435,12 @@ static void npc_handle_multi_layer_fields(struct rvu *rvu, int blkaddr, u8 intf)
goto done;
}
*features |= BIT_ULL(NPC_OUTER_VID);
+
+ /* If key profile extracts inner vlan tci */
+ if (vlan_tag3->nr_kws) {
+ key_fields[NPC_INNER_VID] = *vlan_tag3;
+ *features |= BIT_ULL(NPC_INNER_VID);
+ }
done:
return;
}
@@ -513,6 +523,7 @@ do { \
NPC_SCAN_HDR(NPC_ETYPE_TAG2, NPC_LID_LB, NPC_LT_LB_STAG_QINQ, 8, 2);
NPC_SCAN_HDR(NPC_VLAN_TAG1, NPC_LID_LB, NPC_LT_LB_CTAG, 2, 2);
NPC_SCAN_HDR(NPC_VLAN_TAG2, NPC_LID_LB, NPC_LT_LB_STAG_QINQ, 2, 2);
+ NPC_SCAN_HDR(NPC_VLAN_TAG3, NPC_LID_LB, NPC_LT_LB_STAG_QINQ, 6, 2);
NPC_SCAN_HDR(NPC_DMAC, NPC_LID_LA, la_ltype, la_start, 6);
NPC_SCAN_HDR(NPC_IPSEC_SPI, NPC_LID_LD, NPC_LT_LD_AH, 4, 4);
@@ -943,6 +954,8 @@ do { \
NPC_WRITE_FLOW(NPC_OUTER_VID, vlan_tci, ntohs(pkt->vlan_tci), 0,
ntohs(mask->vlan_tci), 0);
+ NPC_WRITE_FLOW(NPC_INNER_VID, vlan_itci, ntohs(pkt->vlan_itci), 0,
+ ntohs(mask->vlan_itci), 0);
NPC_WRITE_FLOW(NPC_IPFRAG_IPV6, next_header, pkt->next_header, 0,
mask->next_header, 0);
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c
index c535e8170efc..fab9d85bfb37 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c
@@ -447,10 +447,11 @@ static int otx2_tc_process_vlan(struct otx2_nic *nic, struct flow_msg *flow_spec
u16 vlan_tci, vlan_tci_mask;
if (is_inner)
- return -EOPNOTSUPP;
+ flow_rule_match_cvlan(rule, &match);
+ else
+ flow_rule_match_vlan(rule, &match);
- flow_rule_match_vlan(rule, &match);
- if (ntohs(match.key->vlan_tpid) != ETH_P_8021Q) {
+ if (!eth_type_vlan(match.key->vlan_tpid)) {
netdev_err(nic->netdev, "vlan tpid 0x%x not supported\n",
ntohs(match.key->vlan_tpid));
return -EOPNOTSUPP;
@@ -480,9 +481,15 @@ static int otx2_tc_process_vlan(struct otx2_nic *nic, struct flow_msg *flow_spec
vlan_tci_mask = match.mask->vlan_id |
match.mask->vlan_dei << 12 |
match.mask->vlan_priority << 13;
- flow_spec->vlan_tci = htons(vlan_tci);
- flow_mask->vlan_tci = htons(vlan_tci_mask);
- req->features |= BIT_ULL(NPC_OUTER_VID);
+ if (is_inner) {
+ flow_spec->vlan_itci = htons(vlan_tci);
+ flow_mask->vlan_itci = htons(vlan_tci_mask);
+ req->features |= BIT_ULL(NPC_INNER_VID);
+ } else {
+ flow_spec->vlan_tci = htons(vlan_tci);
+ flow_mask->vlan_tci = htons(vlan_tci_mask);
+ req->features |= BIT_ULL(NPC_OUTER_VID);
+ }
}
return 0;
@@ -507,6 +514,7 @@ static int otx2_tc_prepare_flow(struct otx2_nic *nic, struct otx2_tc_flow *node,
BIT_ULL(FLOW_DISSECTOR_KEY_BASIC) |
BIT_ULL(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
BIT_ULL(FLOW_DISSECTOR_KEY_VLAN) |
+ BIT(FLOW_DISSECTOR_KEY_CVLAN) |
BIT_ULL(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
BIT_ULL(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
BIT_ULL(FLOW_DISSECTOR_KEY_PORTS) |
@@ -647,6 +655,14 @@ static int otx2_tc_prepare_flow(struct otx2_nic *nic, struct otx2_tc_flow *node,
return ret;
}
+ if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CVLAN)) {
+ int ret;
+
+ ret = otx2_tc_process_vlan(nic, flow_spec, flow_mask, rule, req, true);
+ if (ret)
+ return ret;
+ }
+
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IPV4_ADDRS)) {
struct flow_match_ipv4_addrs match;
--
2.25.1