From 0f07b9513c02bcc855f07158f6072774d25b8277 Mon Sep 17 00:00:00 2001 From: Kiran Kumar K Date: Wed, 26 Jun 2019 16:05:46 +0530 Subject: [PATCH] net/octeontx2: add flow parsing for inner layers Adding functionality to parse inner layers from la to lc. These will be used to parse inner layers L2, L3, L4 types. Signed-off-by: Kiran Kumar K Signed-off-by: Vivek Sharma --- drivers/net/octeontx2/otx2_flow_parse.c | 210 ++++++++++++++++++++++++ 1 file changed, 210 insertions(+) diff --git a/drivers/net/octeontx2/otx2_flow_parse.c b/drivers/net/octeontx2/otx2_flow_parse.c index ed6c80f07d..b46fdd2587 100644 --- a/drivers/net/octeontx2/otx2_flow_parse.c +++ b/drivers/net/octeontx2/otx2_flow_parse.c @@ -469,3 +469,213 @@ otx2_flow_parse_ld(struct otx2_parse_state *pst) return otx2_flow_update_parse_state(pst, &info, lid, lt, lflags); } + +static inline void +flow_check_lc_ip_tunnel(struct otx2_parse_state *pst) +{ + const struct rte_flow_item *pattern = pst->pattern + 1; + + pattern = otx2_flow_skip_void_and_any_items(pattern); + if (pattern->type == RTE_FLOW_ITEM_TYPE_MPLS || + pattern->type == RTE_FLOW_ITEM_TYPE_IPV4 || + pattern->type == RTE_FLOW_ITEM_TYPE_IPV6) + pst->tunnel = 1; +} + +/* Outer IPv4, Outer IPv6, MPLS, ARP */ +int +otx2_flow_parse_lc(struct otx2_parse_state *pst) +{ + uint8_t hw_mask[NPC_MAX_EXTRACT_DATA_LEN]; + struct otx2_flow_item_info info; + int lid, lt; + int rc; + + if (pst->pattern->type == RTE_FLOW_ITEM_TYPE_MPLS) + return otx2_flow_parse_mpls(pst, NPC_LID_LC); + + info.hw_mask = &hw_mask; + info.spec = NULL; + info.mask = NULL; + info.hw_hdr_len = 0; + lid = NPC_LID_LC; + + switch (pst->pattern->type) { + case RTE_FLOW_ITEM_TYPE_IPV4: + lt = NPC_LT_LC_IP; + info.def_mask = &rte_flow_item_ipv4_mask; + info.len = sizeof(struct rte_flow_item_ipv4); + break; + case RTE_FLOW_ITEM_TYPE_IPV6: + lid = NPC_LID_LC; + lt = NPC_LT_LC_IP6; + info.def_mask = &rte_flow_item_ipv6_mask; + info.len = sizeof(struct rte_flow_item_ipv6); + break; + case RTE_FLOW_ITEM_TYPE_ARP_ETH_IPV4: + lt = NPC_LT_LC_ARP; + info.def_mask = &rte_flow_item_arp_eth_ipv4_mask; + info.len = sizeof(struct rte_flow_item_arp_eth_ipv4); + break; + default: + /* No match at this layer */ + return 0; + } + + /* Identify if IP tunnels MPLS or IPv4/v6 */ + flow_check_lc_ip_tunnel(pst); + + otx2_flow_get_hw_supp_mask(pst, &info, lid, lt); + rc = otx2_flow_parse_item_basic(pst->pattern, &info, pst->error); + if (rc != 0) + return rc; + + return otx2_flow_update_parse_state(pst, &info, lid, lt, 0); +} + +/* VLAN, ETAG */ +int +otx2_flow_parse_lb(struct otx2_parse_state *pst) +{ + const struct rte_flow_item *pattern = pst->pattern; + const struct rte_flow_item *last_pattern; + char hw_mask[NPC_MAX_EXTRACT_DATA_LEN]; + struct otx2_flow_item_info info; + int lid, lt, lflags; + int nr_vlans = 0; + int rc; + + info.spec = NULL; + info.mask = NULL; + info.hw_hdr_len = NPC_TPID_LENGTH; + + lid = NPC_LID_LB; + lflags = 0; + last_pattern = pattern; + + if (pst->pattern->type == RTE_FLOW_ITEM_TYPE_VLAN) { + /* RTE vlan is either 802.1q or 802.1ad, + * this maps to either CTAG/STAG. We need to decide + * based on number of VLANS present. Matching is + * supported on first tag only. + */ + info.def_mask = &rte_flow_item_vlan_mask; + info.hw_mask = NULL; + info.len = sizeof(struct rte_flow_item_vlan); + + pattern = pst->pattern; + while (pattern->type == RTE_FLOW_ITEM_TYPE_VLAN) { + nr_vlans++; + + /* Basic validation of 2nd/3rd vlan item */ + if (nr_vlans > 1) { + otx2_npc_dbg("Vlans = %d", nr_vlans); + rc = otx2_flow_parse_item_basic(pattern, &info, + pst->error); + if (rc != 0) + return rc; + } + last_pattern = pattern; + pattern++; + pattern = otx2_flow_skip_void_and_any_items(pattern); + } + + switch (nr_vlans) { + case 1: + lt = NPC_LT_LB_CTAG; + break; + case 2: + lt = NPC_LT_LB_STAG; + lflags = NPC_F_STAG_CTAG; + break; + case 3: + lt = NPC_LT_LB_STAG; + lflags = NPC_F_STAG_STAG_CTAG; + break; + default: + rte_flow_error_set(pst->error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, + last_pattern, + "more than 3 vlans not supported"); + return -rte_errno; + } + } else if (pst->pattern->type == RTE_FLOW_ITEM_TYPE_E_TAG) { + /* we can support ETAG and match a subsequent CTAG + * without any matching support. + */ + lt = NPC_LT_LB_ETAG; + lflags = 0; + + last_pattern = pst->pattern; + pattern = otx2_flow_skip_void_and_any_items(pst->pattern + 1); + if (pattern->type == RTE_FLOW_ITEM_TYPE_VLAN) { + info.def_mask = &rte_flow_item_vlan_mask; + /* set supported mask to NULL for vlan tag */ + info.hw_mask = NULL; + info.len = sizeof(struct rte_flow_item_vlan); + rc = otx2_flow_parse_item_basic(pattern, &info, + pst->error); + if (rc != 0) + return rc; + + lflags = NPC_F_ETAG_CTAG; + last_pattern = pattern; + } + + info.def_mask = &rte_flow_item_e_tag_mask; + info.len = sizeof(struct rte_flow_item_e_tag); + } else { + return 0; + } + + info.hw_mask = &hw_mask; + info.spec = NULL; + info.mask = NULL; + otx2_flow_get_hw_supp_mask(pst, &info, lid, lt); + + rc = otx2_flow_parse_item_basic(pst->pattern, &info, pst->error); + if (rc != 0) + return rc; + + /* Point pattern to last item consumed */ + pst->pattern = last_pattern; + return otx2_flow_update_parse_state(pst, &info, lid, lt, lflags); +} + +int +otx2_flow_parse_la(struct otx2_parse_state *pst) +{ + struct rte_flow_item_eth hw_mask; + struct otx2_flow_item_info info; + int lid, lt; + int rc; + + /* Identify the pattern type into lid, lt */ + if (pst->pattern->type != RTE_FLOW_ITEM_TYPE_ETH) + return 0; + + lid = NPC_LID_LA; + lt = NPC_LT_LA_ETHER; + info.hw_hdr_len = 0; + + if (pst->flow->nix_intf == NIX_INTF_TX) { + lt = NPC_LT_LA_IH_NIX_ETHER; + info.hw_hdr_len = NPC_IH_LENGTH; + } + + /* Prepare for parsing the item */ + info.def_mask = &rte_flow_item_eth_mask; + info.hw_mask = &hw_mask; + info.len = sizeof(struct rte_flow_item_eth); + otx2_flow_get_hw_supp_mask(pst, &info, lid, lt); + info.spec = NULL; + info.mask = NULL; + + /* Basic validation of item parameters */ + rc = otx2_flow_parse_item_basic(pst->pattern, &info, pst->error); + if (rc) + return rc; + + /* Update pst if not validate only? clash check? */ + return otx2_flow_update_parse_state(pst, &info, lid, lt, 0); +} -- 2.20.1