diff options
author | Hariprasad Kelam <hkelam@marvell.com> | 2023-09-21 11:50:55 +0300 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2023-10-01 18:30:00 +0300 |
commit | a63df366d0915a85d31498d295e6ae81815badde (patch) | |
tree | fd987638e2402a57d63be2d43e7dda9d026f8efc /drivers/net/ethernet/marvell/octeontx2/nic | |
parent | f77e9f13ba090d922fdd3f6e3485fc32010284db (diff) | |
download | linux-a63df366d0915a85d31498d295e6ae81815badde.tar.xz |
octeontx2-pf: Tc flower offload support for MPLS
This patch extends flower offload support for MPLS protocol.
Due to hardware limitation, currently driver supports lse
depth up to 4.
Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/marvell/octeontx2/nic')
-rw-r--r-- | drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c index fab9d85bfb37..8a5e3987a482 100644 --- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c +++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c @@ -27,6 +27,8 @@ #define CN10K_TLX_BURST_MANTISSA GENMASK_ULL(43, 29) #define CN10K_TLX_BURST_EXPONENT GENMASK_ULL(47, 44) +#define OTX2_UNSUPP_LSE_DEPTH GENMASK(6, 4) + struct otx2_tc_flow_stats { u64 bytes; u64 pkts; @@ -519,6 +521,7 @@ static int otx2_tc_prepare_flow(struct otx2_nic *nic, struct otx2_tc_flow *node, BIT_ULL(FLOW_DISSECTOR_KEY_IPV6_ADDRS) | BIT_ULL(FLOW_DISSECTOR_KEY_PORTS) | BIT(FLOW_DISSECTOR_KEY_IPSEC) | + BIT_ULL(FLOW_DISSECTOR_KEY_MPLS) | BIT_ULL(FLOW_DISSECTOR_KEY_IP)))) { netdev_info(nic->netdev, "unsupported flow used key 0x%llx", dissector->used_keys); @@ -738,6 +741,61 @@ static int otx2_tc_prepare_flow(struct otx2_nic *nic, struct otx2_tc_flow *node, } } + if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_MPLS)) { + struct flow_match_mpls match; + u8 bit; + + flow_rule_match_mpls(rule, &match); + + if (match.mask->used_lses & OTX2_UNSUPP_LSE_DEPTH) { + NL_SET_ERR_MSG_MOD(extack, + "unsupported LSE depth for MPLS match offload"); + return -EOPNOTSUPP; + } + + for_each_set_bit(bit, (unsigned long *)&match.mask->used_lses, + FLOW_DIS_MPLS_MAX) { + /* check if any of the fields LABEL,TC,BOS are set */ + if (*((u32 *)&match.mask->ls[bit]) & + OTX2_FLOWER_MASK_MPLS_NON_TTL) { + /* Hardware will capture 4 byte MPLS header into + * two fields NPC_MPLSX_LBTCBOS and NPC_MPLSX_TTL. + * Derive the associated NPC key based on header + * index and offset. + */ + + req->features |= BIT_ULL(NPC_MPLS1_LBTCBOS + + 2 * bit); + flow_spec->mpls_lse[bit] = + FIELD_PREP(OTX2_FLOWER_MASK_MPLS_LB, + match.key->ls[bit].mpls_label) | + FIELD_PREP(OTX2_FLOWER_MASK_MPLS_TC, + match.key->ls[bit].mpls_tc) | + FIELD_PREP(OTX2_FLOWER_MASK_MPLS_BOS, + match.key->ls[bit].mpls_bos); + + flow_mask->mpls_lse[bit] = + FIELD_PREP(OTX2_FLOWER_MASK_MPLS_LB, + match.mask->ls[bit].mpls_label) | + FIELD_PREP(OTX2_FLOWER_MASK_MPLS_TC, + match.mask->ls[bit].mpls_tc) | + FIELD_PREP(OTX2_FLOWER_MASK_MPLS_BOS, + match.mask->ls[bit].mpls_bos); + } + + if (match.mask->ls[bit].mpls_ttl) { + req->features |= BIT_ULL(NPC_MPLS1_TTL + + 2 * bit); + flow_spec->mpls_lse[bit] |= + FIELD_PREP(OTX2_FLOWER_MASK_MPLS_TTL, + match.key->ls[bit].mpls_ttl); + flow_mask->mpls_lse[bit] |= + FIELD_PREP(OTX2_FLOWER_MASK_MPLS_TTL, + match.mask->ls[bit].mpls_ttl); + } + } + } + return otx2_tc_parse_actions(nic, &rule->action, req, f, node); } |