diff options
Diffstat (limited to 'drivers/net/enic/enic_rxtx_common.h')
| -rw-r--r-- | drivers/net/enic/enic_rxtx_common.h | 271 |
1 files changed, 271 insertions, 0 deletions
diff --git a/drivers/net/enic/enic_rxtx_common.h b/drivers/net/enic/enic_rxtx_common.h new file mode 100644 index 00000000..bfbb4909 --- /dev/null +++ b/drivers/net/enic/enic_rxtx_common.h @@ -0,0 +1,271 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright 2008-2018 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + */ + +#ifndef _ENIC_RXTX_COMMON_H_ +#define _ENIC_RXTX_COMMON_H_ + +static inline uint16_t +enic_cq_rx_desc_ciflags(struct cq_enet_rq_desc *crd) +{ + return le16_to_cpu(crd->completed_index_flags) & ~CQ_DESC_COMP_NDX_MASK; +} + +static inline uint16_t +enic_cq_rx_desc_bwflags(struct cq_enet_rq_desc *crd) +{ + return le16_to_cpu(crd->bytes_written_flags) & + ~CQ_ENET_RQ_DESC_BYTES_WRITTEN_MASK; +} + +static inline uint8_t +enic_cq_rx_desc_packet_error(uint16_t bwflags) +{ + return (bwflags & CQ_ENET_RQ_DESC_FLAGS_TRUNCATED) == + CQ_ENET_RQ_DESC_FLAGS_TRUNCATED; +} + +static inline uint8_t +enic_cq_rx_desc_eop(uint16_t ciflags) +{ + return (ciflags & CQ_ENET_RQ_DESC_FLAGS_EOP) + == CQ_ENET_RQ_DESC_FLAGS_EOP; +} + +static inline uint8_t +enic_cq_rx_desc_csum_not_calc(struct cq_enet_rq_desc *cqrd) +{ + return (le16_to_cpu(cqrd->q_number_rss_type_flags) & + CQ_ENET_RQ_DESC_FLAGS_CSUM_NOT_CALC) == + CQ_ENET_RQ_DESC_FLAGS_CSUM_NOT_CALC; +} + +static inline uint8_t +enic_cq_rx_desc_ipv4_csum_ok(struct cq_enet_rq_desc *cqrd) +{ + return (cqrd->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4_CSUM_OK) == + CQ_ENET_RQ_DESC_FLAGS_IPV4_CSUM_OK; +} + +static inline uint8_t +enic_cq_rx_desc_tcp_udp_csum_ok(struct cq_enet_rq_desc *cqrd) +{ + return (cqrd->flags & CQ_ENET_RQ_DESC_FLAGS_TCP_UDP_CSUM_OK) == + CQ_ENET_RQ_DESC_FLAGS_TCP_UDP_CSUM_OK; +} + +static inline uint8_t +enic_cq_rx_desc_rss_type(struct cq_enet_rq_desc *cqrd) +{ + return (uint8_t)((le16_to_cpu(cqrd->q_number_rss_type_flags) >> + CQ_DESC_Q_NUM_BITS) & CQ_ENET_RQ_DESC_RSS_TYPE_MASK); +} + +static inline uint32_t +enic_cq_rx_desc_rss_hash(struct cq_enet_rq_desc *cqrd) +{ + return le32_to_cpu(cqrd->rss_hash); +} + +static inline uint16_t +enic_cq_rx_desc_vlan(struct cq_enet_rq_desc *cqrd) +{ + return le16_to_cpu(cqrd->vlan); +} + +static inline uint16_t +enic_cq_rx_desc_n_bytes(struct cq_desc *cqd) +{ + struct cq_enet_rq_desc *cqrd = (struct cq_enet_rq_desc *)cqd; + return le16_to_cpu(cqrd->bytes_written_flags) & + CQ_ENET_RQ_DESC_BYTES_WRITTEN_MASK; +} + + +static inline uint8_t +enic_cq_rx_check_err(struct cq_desc *cqd) +{ + struct cq_enet_rq_desc *cqrd = (struct cq_enet_rq_desc *)cqd; + uint16_t bwflags; + + bwflags = enic_cq_rx_desc_bwflags(cqrd); + if (unlikely(enic_cq_rx_desc_packet_error(bwflags))) + return 1; + return 0; +} + +/* Lookup table to translate RX CQ flags to mbuf flags. */ +static uint32_t +enic_cq_rx_flags_to_pkt_type(struct cq_desc *cqd, uint8_t tnl) +{ + struct cq_enet_rq_desc *cqrd = (struct cq_enet_rq_desc *)cqd; + uint8_t cqrd_flags = cqrd->flags; + /* + * Odd-numbered entries are for tunnel packets. All packet type info + * applies to the inner packet, and there is no info on the outer + * packet. The outer flags in these entries exist only to avoid + * changing enic_cq_rx_to_pkt_flags(). They are cleared from mbuf + * afterwards. + * + * Also, as there is no tunnel type info (VXLAN, NVGRE, or GENEVE), set + * RTE_PTYPE_TUNNEL_GRENAT.. + */ + static const uint32_t cq_type_table[128] __rte_cache_aligned = { + [0x00] = RTE_PTYPE_UNKNOWN, + [0x01] = RTE_PTYPE_UNKNOWN | + RTE_PTYPE_TUNNEL_GRENAT | + RTE_PTYPE_INNER_L2_ETHER, + [0x20] = RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_L4_NONFRAG, + [0x21] = RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_L4_NONFRAG | + RTE_PTYPE_TUNNEL_GRENAT | + RTE_PTYPE_INNER_L2_ETHER | + RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN | + RTE_PTYPE_INNER_L4_NONFRAG, + [0x22] = RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_L4_UDP, + [0x23] = RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_L4_UDP | + RTE_PTYPE_TUNNEL_GRENAT | + RTE_PTYPE_INNER_L2_ETHER | + RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN | + RTE_PTYPE_INNER_L4_UDP, + [0x24] = RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_L4_TCP, + [0x25] = RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_L4_TCP | + RTE_PTYPE_TUNNEL_GRENAT | + RTE_PTYPE_INNER_L2_ETHER | + RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN | + RTE_PTYPE_INNER_L4_TCP, + [0x60] = RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_L4_FRAG, + [0x61] = RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_L4_FRAG | + RTE_PTYPE_TUNNEL_GRENAT | + RTE_PTYPE_INNER_L2_ETHER | + RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN | + RTE_PTYPE_INNER_L4_FRAG, + [0x62] = RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_L4_FRAG, + [0x63] = RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_L4_FRAG | + RTE_PTYPE_TUNNEL_GRENAT | + RTE_PTYPE_INNER_L2_ETHER | + RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN | + RTE_PTYPE_INNER_L4_FRAG, + [0x64] = RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_L4_FRAG, + [0x65] = RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_L4_FRAG | + RTE_PTYPE_TUNNEL_GRENAT | + RTE_PTYPE_INNER_L2_ETHER | + RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN | + RTE_PTYPE_INNER_L4_FRAG, + [0x10] = RTE_PTYPE_L3_IPV6_EXT_UNKNOWN | RTE_PTYPE_L4_NONFRAG, + [0x11] = RTE_PTYPE_L3_IPV6_EXT_UNKNOWN | RTE_PTYPE_L4_NONFRAG | + RTE_PTYPE_TUNNEL_GRENAT | + RTE_PTYPE_INNER_L2_ETHER | + RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN | + RTE_PTYPE_INNER_L4_NONFRAG, + [0x12] = RTE_PTYPE_L3_IPV6_EXT_UNKNOWN | RTE_PTYPE_L4_UDP, + [0x13] = RTE_PTYPE_L3_IPV6_EXT_UNKNOWN | RTE_PTYPE_L4_UDP | + RTE_PTYPE_TUNNEL_GRENAT | + RTE_PTYPE_INNER_L2_ETHER | + RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN | + RTE_PTYPE_INNER_L4_UDP, + [0x14] = RTE_PTYPE_L3_IPV6_EXT_UNKNOWN | RTE_PTYPE_L4_TCP, + [0x15] = RTE_PTYPE_L3_IPV6_EXT_UNKNOWN | RTE_PTYPE_L4_TCP | + RTE_PTYPE_TUNNEL_GRENAT | + RTE_PTYPE_INNER_L2_ETHER | + RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN | + RTE_PTYPE_INNER_L4_TCP, + [0x50] = RTE_PTYPE_L3_IPV6_EXT_UNKNOWN | RTE_PTYPE_L4_FRAG, + [0x51] = RTE_PTYPE_L3_IPV6_EXT_UNKNOWN | RTE_PTYPE_L4_FRAG | + RTE_PTYPE_TUNNEL_GRENAT | + RTE_PTYPE_INNER_L2_ETHER | + RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN | + RTE_PTYPE_INNER_L4_FRAG, + [0x52] = RTE_PTYPE_L3_IPV6_EXT_UNKNOWN | RTE_PTYPE_L4_FRAG, + [0x53] = RTE_PTYPE_L3_IPV6_EXT_UNKNOWN | RTE_PTYPE_L4_FRAG | + RTE_PTYPE_TUNNEL_GRENAT | + RTE_PTYPE_INNER_L2_ETHER | + RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN | + RTE_PTYPE_INNER_L4_FRAG, + [0x54] = RTE_PTYPE_L3_IPV6_EXT_UNKNOWN | RTE_PTYPE_L4_FRAG, + [0x55] = RTE_PTYPE_L3_IPV6_EXT_UNKNOWN | RTE_PTYPE_L4_FRAG | + RTE_PTYPE_TUNNEL_GRENAT | + RTE_PTYPE_INNER_L2_ETHER | + RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN | + RTE_PTYPE_INNER_L4_FRAG, + /* All others reserved */ + }; + cqrd_flags &= CQ_ENET_RQ_DESC_FLAGS_IPV4_FRAGMENT + | CQ_ENET_RQ_DESC_FLAGS_IPV4 | CQ_ENET_RQ_DESC_FLAGS_IPV6 + | CQ_ENET_RQ_DESC_FLAGS_TCP | CQ_ENET_RQ_DESC_FLAGS_UDP; + return cq_type_table[cqrd_flags + tnl]; +} + +static void +enic_cq_rx_to_pkt_flags(struct cq_desc *cqd, struct rte_mbuf *mbuf) +{ + struct cq_enet_rq_desc *cqrd = (struct cq_enet_rq_desc *)cqd; + uint16_t bwflags, pkt_flags = 0, vlan_tci; + bwflags = enic_cq_rx_desc_bwflags(cqrd); + vlan_tci = enic_cq_rx_desc_vlan(cqrd); + + /* VLAN STRIPPED flag. The L2 packet type updated here also */ + if (bwflags & CQ_ENET_RQ_DESC_FLAGS_VLAN_STRIPPED) { + pkt_flags |= PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED; + mbuf->packet_type |= RTE_PTYPE_L2_ETHER; + } else { + if (vlan_tci != 0) { + pkt_flags |= PKT_RX_VLAN; + mbuf->packet_type |= RTE_PTYPE_L2_ETHER_VLAN; + } else { + mbuf->packet_type |= RTE_PTYPE_L2_ETHER; + } + } + mbuf->vlan_tci = vlan_tci; + + if ((cqd->type_color & CQ_DESC_TYPE_MASK) == CQ_DESC_TYPE_CLASSIFIER) { + struct cq_enet_rq_clsf_desc *clsf_cqd; + uint16_t filter_id; + clsf_cqd = (struct cq_enet_rq_clsf_desc *)cqd; + filter_id = clsf_cqd->filter_id; + if (filter_id) { + pkt_flags |= PKT_RX_FDIR; + if (filter_id != ENIC_MAGIC_FILTER_ID) { + mbuf->hash.fdir.hi = clsf_cqd->filter_id; + pkt_flags |= PKT_RX_FDIR_ID; + } + } + } else if (enic_cq_rx_desc_rss_type(cqrd)) { + /* RSS flag */ + pkt_flags |= PKT_RX_RSS_HASH; + mbuf->hash.rss = enic_cq_rx_desc_rss_hash(cqrd); + } + + /* checksum flags */ + if (mbuf->packet_type & (RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L3_IPV6)) { + if (!enic_cq_rx_desc_csum_not_calc(cqrd)) { + uint32_t l4_flags; + l4_flags = mbuf->packet_type & RTE_PTYPE_L4_MASK; + + /* + * When overlay offload is enabled, the NIC may + * set ipv4_csum_ok=1 if the inner packet is IPv6.. + * So, explicitly check for IPv4 before checking + * ipv4_csum_ok. + */ + if (mbuf->packet_type & RTE_PTYPE_L3_IPV4) { + if (enic_cq_rx_desc_ipv4_csum_ok(cqrd)) + pkt_flags |= PKT_RX_IP_CKSUM_GOOD; + else + pkt_flags |= PKT_RX_IP_CKSUM_BAD; + } + + if (l4_flags == RTE_PTYPE_L4_UDP || + l4_flags == RTE_PTYPE_L4_TCP) { + if (enic_cq_rx_desc_tcp_udp_csum_ok(cqrd)) + pkt_flags |= PKT_RX_L4_CKSUM_GOOD; + else + pkt_flags |= PKT_RX_L4_CKSUM_BAD; + } + } + } + + mbuf->ol_flags = pkt_flags; +} + +#endif /* _ENIC_RXTX_COMMON_H_ */ |