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numam-dpdk/drivers/net/enic/enic_rxtx_common.h
Hyong Youb Kim cd4e7b3250 net/enic: move common Rx functions to a new header file 
Move a number of Rx functions to the header file so that the avx2
based Rx handler can use them.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-10-11 18:53:49 +02:00

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/* 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_ */
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