[net-next PATCH] octeontx2-pf: Add vlan-etype to ntuple filters
From: Subbaraya Sundeep <sbhatta@marvell.com>
Date: 2021-08-27 12:15:47
Subsystem:
marvell octeontx2 physical function driver, marvell octeontx2 rvu admin function driver, networking drivers, the rest · Maintainers:
Sunil Goutham, Geetha sowjanya, Ratheesh Kannoth, Subbaraya Sundeep, Bharat Bhushan, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
NPC extraction profile marks layer types NPC_LT_LB_CTAG for CTAG and NPC_LT_LB_STAG_QINQ for STAG after parsing input packet. Those layer types can be used to install ntuple filters using vlan-etype option. Below are the commands and corresponding behavior with this patch in place.
alias nt "ethtool -U eth0 flow-type ether"
nt vlan 5 m 0xf000 action 0
Input packets with outer VLAN id as 5 i.e, stag packets with VLAN id 5 and ctag packets with VLAN id as 5 are hit.
nt vlan-etype 0x8100 action 0
All input ctag packets with any VLAN id are hit.
nt vlan-etype 0x88A8 action 0
All input stag packets with any VLAN id are hit.
nt vlan-etype 0x8100 vlan 5 m 0xf000 action 0
All input ctag packets with VLAN id 5 are hit.
nt vlan-etype 0x88A8 vlan 5 m 0xf000 action 0
All input stag packets with VLAN id 5 are hit. Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com> Signed-off-by: Sunil Goutham <sgoutham@marvell.com> --- drivers/net/ethernet/marvell/octeontx2/af/npc.h | 2 ++ .../net/ethernet/marvell/octeontx2/af/rvu_npc_fs.c | 35 ++++++++++++++++++---- .../ethernet/marvell/octeontx2/nic/otx2_flows.c | 26 ++++++++++++++-- 3 files changed, 56 insertions(+), 7 deletions(-)
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/npc.h b/drivers/net/ethernet/marvell/octeontx2/af/npc.h
index 243cf80..b426fd5 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/npc.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/npc.h@@ -172,6 +172,8 @@ enum key_fields { NPC_DMAC, NPC_SMAC, NPC_ETYPE, + NPC_VLAN_ETYPE_CTAG, /* 0x8100 */ + NPC_VLAN_ETYPE_STAG, /* 0x88A8 */ NPC_OUTER_VID, NPC_TOS, NPC_SIP_IPV4,
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 43874d3..e0634ef 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 +20,8 @@ static const char * const npc_flow_names[] = { [NPC_DMAC] = "dmac", [NPC_SMAC] = "smac", [NPC_ETYPE] = "ether type", + [NPC_VLAN_ETYPE_CTAG] = "vlan ether type ctag", + [NPC_VLAN_ETYPE_STAG] = "vlan ether type stag", [NPC_OUTER_VID] = "outer vlan id", [NPC_TOS] = "tos", [NPC_SIP_IPV4] = "ipv4 source ip",
@@ -492,6 +494,11 @@ static void npc_set_features(struct rvu *rvu, int blkaddr, u8 intf) if (*features & BIT_ULL(NPC_OUTER_VID)) if (!npc_check_field(rvu, blkaddr, NPC_LB, intf)) *features &= ~BIT_ULL(NPC_OUTER_VID); + + /* for vlan ethertypes corresponding layer type should be in the key */ + if (npc_check_field(rvu, blkaddr, NPC_LB, intf)) + *features |= BIT_ULL(NPC_VLAN_ETYPE_CTAG) | + BIT_ULL(NPC_VLAN_ETYPE_STAG); } /* Scan key extraction profile and record how fields of our interest
@@ -747,6 +754,28 @@ static void npc_update_ipv6_flow(struct rvu *rvu, struct mcam_entry *entry, } } +static void npc_update_vlan_features(struct rvu *rvu, struct mcam_entry *entry, + u64 features, u8 intf) +{ + bool ctag = !!(features & BIT_ULL(NPC_VLAN_ETYPE_CTAG)); + bool stag = !!(features & BIT_ULL(NPC_VLAN_ETYPE_STAG)); + bool vid = !!(features & BIT_ULL(NPC_OUTER_VID)); + + /* If only VLAN id is given then always match outer VLAN id */ + if (vid && !ctag && !stag) { + npc_update_entry(rvu, NPC_LB, entry, + NPC_LT_LB_STAG_QINQ | NPC_LT_LB_CTAG, 0, + NPC_LT_LB_STAG_QINQ & NPC_LT_LB_CTAG, 0, intf); + return; + } + if (ctag) + npc_update_entry(rvu, NPC_LB, entry, NPC_LT_LB_CTAG, 0, + ~0ULL, 0, intf); + if (stag) + npc_update_entry(rvu, NPC_LB, entry, NPC_LT_LB_STAG_QINQ, 0, + ~0ULL, 0, intf); +} + static void npc_update_flow(struct rvu *rvu, struct mcam_entry *entry, u64 features, struct flow_msg *pkt, struct flow_msg *mask,
@@ -779,11 +808,6 @@ static void npc_update_flow(struct rvu *rvu, struct mcam_entry *entry, npc_update_entry(rvu, NPC_LD, entry, NPC_LT_LD_ICMP6, 0, ~0ULL, 0, intf); - if (features & BIT_ULL(NPC_OUTER_VID)) - npc_update_entry(rvu, NPC_LB, entry, - NPC_LT_LB_STAG_QINQ | NPC_LT_LB_CTAG, 0, - NPC_LT_LB_STAG_QINQ & NPC_LT_LB_CTAG, 0, intf); - /* For AH, LTYPE should be present in entry */ if (features & BIT_ULL(NPC_IPPROTO_AH)) npc_update_entry(rvu, NPC_LD, entry, NPC_LT_LD_AH,
@@ -829,6 +853,7 @@ do { \ ntohs(mask->vlan_tci), 0); npc_update_ipv6_flow(rvu, entry, features, pkt, mask, output, intf); + npc_update_vlan_features(rvu, entry, features, intf); } static struct rvu_npc_mcam_rule *rvu_mcam_find_rule(struct npc_mcam *mcam,
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c
index e949001..283ef6b 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c@@ -818,8 +818,30 @@ int otx2_prepare_flow_request(struct ethtool_rx_flow_spec *fsp, return -EOPNOTSUPP; } if (fsp->flow_type & FLOW_EXT) { - if (fsp->m_ext.vlan_etype) - return -EINVAL; + u16 vlan_etype; + + if (fsp->m_ext.vlan_etype) { + /* Partial masks not supported */ + if (be16_to_cpu(fsp->m_ext.vlan_etype) != 0xFFFF) + return -EINVAL; + + vlan_etype = be16_to_cpu(fsp->h_ext.vlan_etype); + /* Only ETH_P_8021Q and ETH_P_802AD types supported */ + if (vlan_etype != ETH_P_8021Q && + vlan_etype != ETH_P_8021AD) + return -EINVAL; + + memcpy(&pkt->vlan_etype, &fsp->h_ext.vlan_etype, + sizeof(pkt->vlan_etype)); + memcpy(&pmask->vlan_etype, &fsp->m_ext.vlan_etype, + sizeof(pmask->vlan_etype)); + + if (vlan_etype == ETH_P_8021Q) + req->features |= BIT_ULL(NPC_VLAN_ETYPE_CTAG); + else + req->features |= BIT_ULL(NPC_VLAN_ETYPE_STAG); + } + if (fsp->m_ext.vlan_tci) { memcpy(&pkt->vlan_tci, &fsp->h_ext.vlan_tci, sizeof(pkt->vlan_tci));
--
2.7.4