Quelle  iavf_adv_rss.h   Sprache: C

/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (c) 2021, Intel Corporation. */

#ifndef _IAVF_ADV_RSS_H_
#define _IAVF_ADV_RSS_H_

struct iavf_adapter;

/* State of advanced RSS configuration */
enum iavf_adv_rss_state_t {
 IAVF_ADV_RSS_ADD_REQUEST, /* User requests to add RSS */
 IAVF_ADV_RSS_ADD_PENDING, /* RSS pending add by the PF */
 IAVF_ADV_RSS_DEL_REQUEST, /* Driver requests to delete RSS */
 IAVF_ADV_RSS_DEL_PENDING, /* RSS pending delete by the PF */
 IAVF_ADV_RSS_ACTIVE,  /* RSS configuration is active */
};

enum iavf_adv_rss_flow_seg_hdr {
 IAVF_ADV_RSS_FLOW_SEG_HDR_NONE = 0x00000000,
 IAVF_ADV_RSS_FLOW_SEG_HDR_IPV4 = 0x00000001,
 IAVF_ADV_RSS_FLOW_SEG_HDR_IPV6 = 0x00000002,
 IAVF_ADV_RSS_FLOW_SEG_HDR_TCP = 0x00000004,
 IAVF_ADV_RSS_FLOW_SEG_HDR_UDP = 0x00000008,
 IAVF_ADV_RSS_FLOW_SEG_HDR_SCTP = 0x00000010,
};

#define IAVF_ADV_RSS_FLOW_SEG_HDR_L3  \
 (IAVF_ADV_RSS_FLOW_SEG_HDR_IPV4 | \
  IAVF_ADV_RSS_FLOW_SEG_HDR_IPV6)

#define IAVF_ADV_RSS_FLOW_SEG_HDR_L4  \
 (IAVF_ADV_RSS_FLOW_SEG_HDR_TCP | \
  IAVF_ADV_RSS_FLOW_SEG_HDR_UDP | \
  IAVF_ADV_RSS_FLOW_SEG_HDR_SCTP)

enum iavf_adv_rss_flow_field {
 /* L3 */
 IAVF_ADV_RSS_FLOW_FIELD_IDX_IPV4_SA,
 IAVF_ADV_RSS_FLOW_FIELD_IDX_IPV4_DA,
 IAVF_ADV_RSS_FLOW_FIELD_IDX_IPV6_SA,
 IAVF_ADV_RSS_FLOW_FIELD_IDX_IPV6_DA,
 /* L4 */
 IAVF_ADV_RSS_FLOW_FIELD_IDX_TCP_SRC_PORT,
 IAVF_ADV_RSS_FLOW_FIELD_IDX_TCP_DST_PORT,
 IAVF_ADV_RSS_FLOW_FIELD_IDX_UDP_SRC_PORT,
 IAVF_ADV_RSS_FLOW_FIELD_IDX_UDP_DST_PORT,
 IAVF_ADV_RSS_FLOW_FIELD_IDX_SCTP_SRC_PORT,
 IAVF_ADV_RSS_FLOW_FIELD_IDX_SCTP_DST_PORT,

 /* The total number of enums must not exceed 64 */
 IAVF_ADV_RSS_FLOW_FIELD_IDX_MAX
};

#define IAVF_ADV_RSS_HASH_INVALID 0
#define IAVF_ADV_RSS_HASH_FLD_IPV4_SA \
 BIT_ULL(IAVF_ADV_RSS_FLOW_FIELD_IDX_IPV4_SA)
#define IAVF_ADV_RSS_HASH_FLD_IPV6_SA \
 BIT_ULL(IAVF_ADV_RSS_FLOW_FIELD_IDX_IPV6_SA)
#define IAVF_ADV_RSS_HASH_FLD_IPV4_DA \
 BIT_ULL(IAVF_ADV_RSS_FLOW_FIELD_IDX_IPV4_DA)
#define IAVF_ADV_RSS_HASH_FLD_IPV6_DA \
 BIT_ULL(IAVF_ADV_RSS_FLOW_FIELD_IDX_IPV6_DA)
#define IAVF_ADV_RSS_HASH_FLD_TCP_SRC_PORT \
 BIT_ULL(IAVF_ADV_RSS_FLOW_FIELD_IDX_TCP_SRC_PORT)
#define IAVF_ADV_RSS_HASH_FLD_TCP_DST_PORT \
 BIT_ULL(IAVF_ADV_RSS_FLOW_FIELD_IDX_TCP_DST_PORT)
#define IAVF_ADV_RSS_HASH_FLD_UDP_SRC_PORT \
 BIT_ULL(IAVF_ADV_RSS_FLOW_FIELD_IDX_UDP_SRC_PORT)
#define IAVF_ADV_RSS_HASH_FLD_UDP_DST_PORT \
 BIT_ULL(IAVF_ADV_RSS_FLOW_FIELD_IDX_UDP_DST_PORT)
#define IAVF_ADV_RSS_HASH_FLD_SCTP_SRC_PORT \
 BIT_ULL(IAVF_ADV_RSS_FLOW_FIELD_IDX_SCTP_SRC_PORT)
#define IAVF_ADV_RSS_HASH_FLD_SCTP_DST_PORT \
 BIT_ULL(IAVF_ADV_RSS_FLOW_FIELD_IDX_SCTP_DST_PORT)

/* bookkeeping of advanced RSS configuration */
struct iavf_adv_rss {
 enum iavf_adv_rss_state_t state;
 struct list_head list;

 u32 packet_hdrs;
 u64 hash_flds;
 bool symm;

 struct virtchnl_rss_cfg cfg_msg;
};

int
iavf_fill_adv_rss_cfg_msg(struct virtchnl_rss_cfg *rss_cfg,
     u32 packet_hdrs, u64 hash_flds, bool symm);
struct iavf_adv_rss *
iavf_find_adv_rss_cfg_by_hdrs(struct iavf_adapter *adapter, u32 packet_hdrs);
void
iavf_print_adv_rss_cfg(struct iavf_adapter *adapter, struct iavf_adv_rss *rss,
         const char *action, const char *result);
#endif /* _IAVF_ADV_RSS_H_ */