cq_enet_desc.h
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/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef _CQ_ENET_DESC_H_
#define _CQ_ENET_DESC_H_
#include "cq_desc.h"
/* Ethernet completion queue descriptor: 16B */
struct cq_enet_wq_desc {
__le16 completed_index;
__le16 q_number;
u8 reserved[11];
u8 type_color;
};
static inline void cq_enet_wq_desc_dec(struct cq_enet_wq_desc *desc,
u8 *type, u8 *color, u16 *q_number, u16 *completed_index)
{
cq_desc_dec((struct cq_desc *)desc, type,
color, q_number, completed_index);
}
/* Completion queue descriptor: Ethernet receive queue, 16B */
struct cq_enet_rq_desc {
__le16 completed_index_flags;
__le16 q_number_rss_type_flags;
__le32 rss_hash;
__le16 bytes_written_flags;
__le16 vlan;
__le16 checksum_fcoe;
u8 flags;
u8 type_color;
};
#define CQ_ENET_RQ_DESC_FLAGS_INGRESS_PORT (0x1 << 12)
#define CQ_ENET_RQ_DESC_FLAGS_FCOE (0x1 << 13)
#define CQ_ENET_RQ_DESC_FLAGS_EOP (0x1 << 14)
#define CQ_ENET_RQ_DESC_FLAGS_SOP (0x1 << 15)
#define CQ_ENET_RQ_DESC_RSS_TYPE_BITS 4
#define CQ_ENET_RQ_DESC_RSS_TYPE_MASK \
((1 << CQ_ENET_RQ_DESC_RSS_TYPE_BITS) - 1)
#define CQ_ENET_RQ_DESC_RSS_TYPE_NONE 0
#define CQ_ENET_RQ_DESC_RSS_TYPE_IPv4 1
#define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv4 2
#define CQ_ENET_RQ_DESC_RSS_TYPE_IPv6 3
#define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv6 4
#define CQ_ENET_RQ_DESC_RSS_TYPE_IPv6_EX 5
#define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv6_EX 6
#define CQ_ENET_RQ_DESC_FLAGS_CSUM_NOT_CALC (0x1 << 14)
#define CQ_ENET_RQ_DESC_BYTES_WRITTEN_BITS 14
#define CQ_ENET_RQ_DESC_BYTES_WRITTEN_MASK \
((1 << CQ_ENET_RQ_DESC_BYTES_WRITTEN_BITS) - 1)
#define CQ_ENET_RQ_DESC_FLAGS_TRUNCATED (0x1 << 14)
#define CQ_ENET_RQ_DESC_FLAGS_VLAN_STRIPPED (0x1 << 15)
#define CQ_ENET_RQ_DESC_FCOE_SOF_BITS 4
#define CQ_ENET_RQ_DESC_FCOE_SOF_MASK \
((1 << CQ_ENET_RQ_DESC_FCOE_SOF_BITS) - 1)
#define CQ_ENET_RQ_DESC_FCOE_EOF_BITS 8
#define CQ_ENET_RQ_DESC_FCOE_EOF_MASK \
((1 << CQ_ENET_RQ_DESC_FCOE_EOF_BITS) - 1)
#define CQ_ENET_RQ_DESC_FCOE_EOF_SHIFT 8
#define CQ_ENET_RQ_DESC_FLAGS_TCP_UDP_CSUM_OK (0x1 << 0)
#define CQ_ENET_RQ_DESC_FCOE_FC_CRC_OK (0x1 << 0)
#define CQ_ENET_RQ_DESC_FLAGS_UDP (0x1 << 1)
#define CQ_ENET_RQ_DESC_FCOE_ENC_ERROR (0x1 << 1)
#define CQ_ENET_RQ_DESC_FLAGS_TCP (0x1 << 2)
#define CQ_ENET_RQ_DESC_FLAGS_IPV4_CSUM_OK (0x1 << 3)
#define CQ_ENET_RQ_DESC_FLAGS_IPV6 (0x1 << 4)
#define CQ_ENET_RQ_DESC_FLAGS_IPV4 (0x1 << 5)
#define CQ_ENET_RQ_DESC_FLAGS_IPV4_FRAGMENT (0x1 << 6)
#define CQ_ENET_RQ_DESC_FLAGS_FCS_OK (0x1 << 7)
static inline void cq_enet_rq_desc_dec(struct cq_enet_rq_desc *desc,
u8 *type, u8 *color, u16 *q_number, u16 *completed_index,
u8 *ingress_port, u8 *fcoe, u8 *eop, u8 *sop, u8 *rss_type,
u8 *csum_not_calc, u32 *rss_hash, u16 *bytes_written, u8 *packet_error,
u8 *vlan_stripped, u16 *vlan, u16 *checksum, u8 *fcoe_sof,
u8 *fcoe_fc_crc_ok, u8 *fcoe_enc_error, u8 *fcoe_eof,
u8 *tcp_udp_csum_ok, u8 *udp, u8 *tcp, u8 *ipv4_csum_ok,
u8 *ipv6, u8 *ipv4, u8 *ipv4_fragment, u8 *fcs_ok)
{
u16 completed_index_flags = le16_to_cpu(desc->completed_index_flags);
u16 q_number_rss_type_flags =
le16_to_cpu(desc->q_number_rss_type_flags);
u16 bytes_written_flags = le16_to_cpu(desc->bytes_written_flags);
cq_desc_dec((struct cq_desc *)desc, type,
color, q_number, completed_index);
*ingress_port = (completed_index_flags &
CQ_ENET_RQ_DESC_FLAGS_INGRESS_PORT) ? 1 : 0;
*fcoe = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_FCOE) ?
1 : 0;
*eop = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_EOP) ?
1 : 0;
*sop = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_SOP) ?
1 : 0;
*rss_type = (u8)((q_number_rss_type_flags >> CQ_DESC_Q_NUM_BITS) &
CQ_ENET_RQ_DESC_RSS_TYPE_MASK);
*csum_not_calc = (q_number_rss_type_flags &
CQ_ENET_RQ_DESC_FLAGS_CSUM_NOT_CALC) ? 1 : 0;
*rss_hash = le32_to_cpu(desc->rss_hash);
*bytes_written = bytes_written_flags &
CQ_ENET_RQ_DESC_BYTES_WRITTEN_MASK;
*packet_error = (bytes_written_flags &
CQ_ENET_RQ_DESC_FLAGS_TRUNCATED) ? 1 : 0;
*vlan_stripped = (bytes_written_flags &
CQ_ENET_RQ_DESC_FLAGS_VLAN_STRIPPED) ? 1 : 0;
*vlan = le16_to_cpu(desc->vlan);
if (*fcoe) {
*fcoe_sof = (u8)(le16_to_cpu(desc->checksum_fcoe) &
CQ_ENET_RQ_DESC_FCOE_SOF_MASK);
*fcoe_fc_crc_ok = (desc->flags &
CQ_ENET_RQ_DESC_FCOE_FC_CRC_OK) ? 1 : 0;
*fcoe_enc_error = (desc->flags &
CQ_ENET_RQ_DESC_FCOE_ENC_ERROR) ? 1 : 0;
*fcoe_eof = (u8)((desc->checksum_fcoe >>
CQ_ENET_RQ_DESC_FCOE_EOF_SHIFT) &
CQ_ENET_RQ_DESC_FCOE_EOF_MASK);
*checksum = 0;
} else {
*fcoe_sof = 0;
*fcoe_fc_crc_ok = 0;
*fcoe_enc_error = 0;
*fcoe_eof = 0;
*checksum = le16_to_cpu(desc->checksum_fcoe);
}
*tcp_udp_csum_ok =
(desc->flags & CQ_ENET_RQ_DESC_FLAGS_TCP_UDP_CSUM_OK) ? 1 : 0;
*udp = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_UDP) ? 1 : 0;
*tcp = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_TCP) ? 1 : 0;
*ipv4_csum_ok =
(desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4_CSUM_OK) ? 1 : 0;
*ipv6 = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV6) ? 1 : 0;
*ipv4 = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4) ? 1 : 0;
*ipv4_fragment =
(desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4_FRAGMENT) ? 1 : 0;
*fcs_ok = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_FCS_OK) ? 1 : 0;
}
#endif /* _CQ_ENET_DESC_H_ */