cq_enet_desc.h

  1/* SPDX-License-Identifier: GPL-2.0-only */
  2/*
  3 * Copyright 2008 Cisco Systems, Inc.  All rights reserved.
  4 * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
  5 */
  6#ifndef _CQ_ENET_DESC_H_
  7#define _CQ_ENET_DESC_H_
  8
  9#include "cq_desc.h"
 10
 11/* Ethernet completion queue descriptor: 16B */
 12struct cq_enet_wq_desc {
 13	__le16 completed_index;
 14	__le16 q_number;
 15	u8 reserved[11];
 16	u8 type_color;
 17};
 18
 19static inline void cq_enet_wq_desc_dec(struct cq_enet_wq_desc *desc,
 20	u8 *type, u8 *color, u16 *q_number, u16 *completed_index)
 21{
 22	cq_desc_dec((struct cq_desc *)desc, type,
 23		color, q_number, completed_index);
 24}
 25
 26/* Completion queue descriptor: Ethernet receive queue, 16B */
 27struct cq_enet_rq_desc {
 28	__le16 completed_index_flags;
 29	__le16 q_number_rss_type_flags;
 30	__le32 rss_hash;
 31	__le16 bytes_written_flags;
 32	__le16 vlan;
 33	__le16 checksum_fcoe;
 34	u8 flags;
 35	u8 type_color;
 36};
 37
 38#define CQ_ENET_RQ_DESC_FLAGS_INGRESS_PORT          (0x1 << 12)
 39#define CQ_ENET_RQ_DESC_FLAGS_FCOE                  (0x1 << 13)
 40#define CQ_ENET_RQ_DESC_FLAGS_EOP                   (0x1 << 14)
 41#define CQ_ENET_RQ_DESC_FLAGS_SOP                   (0x1 << 15)
 42
 43#define CQ_ENET_RQ_DESC_RSS_TYPE_BITS               4
 44#define CQ_ENET_RQ_DESC_RSS_TYPE_MASK \
 45	((1 << CQ_ENET_RQ_DESC_RSS_TYPE_BITS) - 1)
 46#define CQ_ENET_RQ_DESC_RSS_TYPE_NONE               0
 47#define CQ_ENET_RQ_DESC_RSS_TYPE_IPv4               1
 48#define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv4           2
 49#define CQ_ENET_RQ_DESC_RSS_TYPE_IPv6               3
 50#define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv6           4
 51#define CQ_ENET_RQ_DESC_RSS_TYPE_IPv6_EX            5
 52#define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv6_EX        6
 53
 54#define CQ_ENET_RQ_DESC_FLAGS_CSUM_NOT_CALC         (0x1 << 14)
 55
 56#define CQ_ENET_RQ_DESC_BYTES_WRITTEN_BITS          14
 57#define CQ_ENET_RQ_DESC_BYTES_WRITTEN_MASK \
 58	((1 << CQ_ENET_RQ_DESC_BYTES_WRITTEN_BITS) - 1)
 59#define CQ_ENET_RQ_DESC_FLAGS_TRUNCATED             (0x1 << 14)
 60#define CQ_ENET_RQ_DESC_FLAGS_VLAN_STRIPPED         (0x1 << 15)
 61
 62#define CQ_ENET_RQ_DESC_FCOE_SOF_BITS               4
 63#define CQ_ENET_RQ_DESC_FCOE_SOF_MASK \
 64	((1 << CQ_ENET_RQ_DESC_FCOE_SOF_BITS) - 1)
 65#define CQ_ENET_RQ_DESC_FCOE_EOF_BITS               8
 66#define CQ_ENET_RQ_DESC_FCOE_EOF_MASK \
 67	((1 << CQ_ENET_RQ_DESC_FCOE_EOF_BITS) - 1)
 68#define CQ_ENET_RQ_DESC_FCOE_EOF_SHIFT              8
 69
 70#define CQ_ENET_RQ_DESC_FLAGS_TCP_UDP_CSUM_OK       (0x1 << 0)
 71#define CQ_ENET_RQ_DESC_FCOE_FC_CRC_OK              (0x1 << 0)
 72#define CQ_ENET_RQ_DESC_FLAGS_UDP                   (0x1 << 1)
 73#define CQ_ENET_RQ_DESC_FCOE_ENC_ERROR              (0x1 << 1)
 74#define CQ_ENET_RQ_DESC_FLAGS_TCP                   (0x1 << 2)
 75#define CQ_ENET_RQ_DESC_FLAGS_IPV4_CSUM_OK          (0x1 << 3)
 76#define CQ_ENET_RQ_DESC_FLAGS_IPV6                  (0x1 << 4)
 77#define CQ_ENET_RQ_DESC_FLAGS_IPV4                  (0x1 << 5)
 78#define CQ_ENET_RQ_DESC_FLAGS_IPV4_FRAGMENT         (0x1 << 6)
 79#define CQ_ENET_RQ_DESC_FLAGS_FCS_OK                (0x1 << 7)
 80
 81static inline void cq_enet_rq_desc_dec(struct cq_enet_rq_desc *desc,
 82	u8 *type, u8 *color, u16 *q_number, u16 *completed_index,
 83	u8 *ingress_port, u8 *fcoe, u8 *eop, u8 *sop, u8 *rss_type,
 84	u8 *csum_not_calc, u32 *rss_hash, u16 *bytes_written, u8 *packet_error,
 85	u8 *vlan_stripped, u16 *vlan, u16 *checksum, u8 *fcoe_sof,
 86	u8 *fcoe_fc_crc_ok, u8 *fcoe_enc_error, u8 *fcoe_eof,
 87	u8 *tcp_udp_csum_ok, u8 *udp, u8 *tcp, u8 *ipv4_csum_ok,
 88	u8 *ipv6, u8 *ipv4, u8 *ipv4_fragment, u8 *fcs_ok)
 89{
 90	u16 completed_index_flags = le16_to_cpu(desc->completed_index_flags);
 91	u16 q_number_rss_type_flags =
 92		le16_to_cpu(desc->q_number_rss_type_flags);
 93	u16 bytes_written_flags = le16_to_cpu(desc->bytes_written_flags);
 94
 95	cq_desc_dec((struct cq_desc *)desc, type,
 96		color, q_number, completed_index);
 97
 98	*ingress_port = (completed_index_flags &
 99		CQ_ENET_RQ_DESC_FLAGS_INGRESS_PORT) ? 1 : 0;
100	*fcoe = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_FCOE) ?
101		1 : 0;
102	*eop = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_EOP) ?
103		1 : 0;
104	*sop = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_SOP) ?
105		1 : 0;
106
107	*rss_type = (u8)((q_number_rss_type_flags >> CQ_DESC_Q_NUM_BITS) &
108		CQ_ENET_RQ_DESC_RSS_TYPE_MASK);
109	*csum_not_calc = (q_number_rss_type_flags &
110		CQ_ENET_RQ_DESC_FLAGS_CSUM_NOT_CALC) ? 1 : 0;
111
112	*rss_hash = le32_to_cpu(desc->rss_hash);
113
114	*bytes_written = bytes_written_flags &
115		CQ_ENET_RQ_DESC_BYTES_WRITTEN_MASK;
116	*packet_error = (bytes_written_flags &
117		CQ_ENET_RQ_DESC_FLAGS_TRUNCATED) ? 1 : 0;
118	*vlan_stripped = (bytes_written_flags &
119		CQ_ENET_RQ_DESC_FLAGS_VLAN_STRIPPED) ? 1 : 0;
120
121	*vlan = le16_to_cpu(desc->vlan);
122
123	if (*fcoe) {
124		*fcoe_sof = (u8)(le16_to_cpu(desc->checksum_fcoe) &
125			CQ_ENET_RQ_DESC_FCOE_SOF_MASK);
126		*fcoe_fc_crc_ok = (desc->flags &
127			CQ_ENET_RQ_DESC_FCOE_FC_CRC_OK) ? 1 : 0;
128		*fcoe_enc_error = (desc->flags &
129			CQ_ENET_RQ_DESC_FCOE_ENC_ERROR) ? 1 : 0;
130		*fcoe_eof = (u8)((desc->checksum_fcoe >>
131			CQ_ENET_RQ_DESC_FCOE_EOF_SHIFT) &
132			CQ_ENET_RQ_DESC_FCOE_EOF_MASK);
133		*checksum = 0;
134	} else {
135		*fcoe_sof = 0;
136		*fcoe_fc_crc_ok = 0;
137		*fcoe_enc_error = 0;
138		*fcoe_eof = 0;
139		*checksum = le16_to_cpu(desc->checksum_fcoe);
140	}
141
142	*tcp_udp_csum_ok =
143		(desc->flags & CQ_ENET_RQ_DESC_FLAGS_TCP_UDP_CSUM_OK) ? 1 : 0;
144	*udp = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_UDP) ? 1 : 0;
145	*tcp = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_TCP) ? 1 : 0;
146	*ipv4_csum_ok =
147		(desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4_CSUM_OK) ? 1 : 0;
148	*ipv6 = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV6) ? 1 : 0;
149	*ipv4 = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4) ? 1 : 0;
150	*ipv4_fragment =
151		(desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4_FRAGMENT) ? 1 : 0;
152	*fcs_ok = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_FCS_OK) ? 1 : 0;
153}
154
155#endif /* _CQ_ENET_DESC_H_ */