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ice: add parser execution main loop

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Implement the core work of the runtime parser via:
- ice_parser_rt_execute()
- ice_parser_rt_reset()
- ice_parser_rt_pkt_buf_set()

Reviewed-by: Marcin Szycik <marcin.szycik@linux.intel.com>
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
Signed-off-by: Junfeng Guo <junfeng.guo@intel.com>
Signed-off-by: Ahmed Zaki <ahmed.zaki@intel.com>
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
This commit is contained in:
Junfeng Guo 2024-07-25 16:08:01 -06:00 committed by Tony Nguyen
parent 4851f12c8d
commit 9a4c07aaa0
4 changed files with 994 additions and 0 deletions
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1
drivers/net/ethernet/intel/ice/Makefile
View File

@ -29,6 +29,7 @@ ice-y := ice_main.o \
ice_flex_pipe.o \
ice_flow.o \
ice_parser.o \
ice_parser_rt.o \
ice_idc.o \
devlink/devlink.o \
devlink/devlink_port.o \

41
drivers/net/ethernet/intel/ice/ice_parser.c
View File

@ -1963,6 +1963,7 @@ struct ice_parser *ice_parser_create(struct ice_hw *hw)
return ERR_PTR(-ENOMEM);
p->hw = hw;
p->rt.psr = p;
p->imem_table = ice_imem_table_get(hw);
if (IS_ERR(p->imem_table)) {
@ -2091,3 +2092,43 @@ void ice_parser_destroy(struct ice_parser *psr)
kfree(psr);
}
/**
* ice_parser_run - parse on a packet in binary and return the result
* @psr: pointer to a parser instance
* @pkt_buf: packet data
* @pkt_len: packet length
* @rslt: input/output parameter to save parser result.
*
* Return: 0 on success or errno.
*/
int ice_parser_run(struct ice_parser *psr, const u8 *pkt_buf,
int pkt_len, struct ice_parser_result *rslt)
{
ice_parser_rt_reset(&psr->rt);
ice_parser_rt_pktbuf_set(&psr->rt, pkt_buf, pkt_len);
return ice_parser_rt_execute(&psr->rt, rslt);
}
/**
* ice_parser_result_dump - dump a parser result info
* @hw: pointer to the hardware structure
* @rslt: parser result info to dump
*/
void ice_parser_result_dump(struct ice_hw *hw, struct ice_parser_result *rslt)
{
struct device *dev = ice_hw_to_dev(hw);
int i;
dev_info(dev, "ptype = %d\n", rslt->ptype);
for (i = 0; i < rslt->po_num; i++)
dev_info(dev, "proto = %d, offset = %d\n",
rslt->po[i].proto_id, rslt->po[i].offset);
dev_info(dev, "flags_psr = 0x%016llx\n", rslt->flags_psr);
dev_info(dev, "flags_pkt = 0x%016llx\n", rslt->flags_pkt);
dev_info(dev, "flags_sw = 0x%04x\n", rslt->flags_sw);
dev_info(dev, "flags_fd = 0x%04x\n", rslt->flags_fd);
dev_info(dev, "flags_rss = 0x%04x\n", rslt->flags_rss);
}

91
drivers/net/ethernet/intel/ice/ice_parser.h
View File

@ -363,6 +363,92 @@ struct ice_xlt_kb {
u16 ice_xlt_kb_flag_get(struct ice_xlt_kb *kb, u64 pkt_flag);
/*** Parser API ***/
#define ICE_GPR_HV_IDX 64
#define ICE_GPR_HV_SIZE 32
#define ICE_GPR_ERR_IDX 84
#define ICE_GPR_FLG_IDX 104
#define ICE_GPR_FLG_SIZE 16
#define ICE_GPR_TSR_IDX 108 /* TSR: TCAM Search Register */
#define ICE_GPR_NN_IDX 109 /* NN: Next Parsing Cycle Node ID */
#define ICE_GPR_HO_IDX 110 /* HO: Next Parsing Cycle hdr Offset */
#define ICE_GPR_NP_IDX 111 /* NP: Next Parsing Cycle */
#define ICE_PARSER_MAX_PKT_LEN 504
#define ICE_PARSER_PKT_REV 32
#define ICE_PARSER_GPR_NUM 128
#define ICE_PARSER_FLG_NUM 64
#define ICE_PARSER_ERR_NUM 16
#define ICE_BST_KEY_SIZE 10
#define ICE_MARKER_ID_SIZE 9
#define ICE_MARKER_MAX_SIZE \
(ICE_MARKER_ID_SIZE * BITS_PER_BYTE - 1)
#define ICE_MARKER_ID_NUM 8
#define ICE_PO_PAIR_SIZE 256
struct ice_gpr_pu {
/* array of flags to indicate if GRP needs to be updated */
bool gpr_val_upd[ICE_PARSER_GPR_NUM];
u16 gpr_val[ICE_PARSER_GPR_NUM];
u64 flg_msk;
u64 flg_val;
u16 err_msk;
u16 err_val;
};
enum ice_pg_prio {
ICE_PG_P0 = 0,
ICE_PG_P1 = 1,
ICE_PG_P2 = 2,
ICE_PG_P3 = 3,
};
struct ice_parser_rt {
struct ice_parser *psr;
u16 gpr[ICE_PARSER_GPR_NUM];
u8 pkt_buf[ICE_PARSER_MAX_PKT_LEN + ICE_PARSER_PKT_REV];
u16 pkt_len;
u16 po;
u8 bst_key[ICE_BST_KEY_SIZE];
struct ice_pg_cam_key pg_key;
struct ice_alu *alu0;
struct ice_alu *alu1;
struct ice_alu *alu2;
struct ice_pg_cam_action *action;
u8 pg_prio;
struct ice_gpr_pu pu;
u8 markers[ICE_MARKER_ID_SIZE];
bool protocols[ICE_PO_PAIR_SIZE];
u16 offsets[ICE_PO_PAIR_SIZE];
};
struct ice_parser_proto_off {
u8 proto_id; /* hardware protocol ID */
u16 offset; /* offset from the start of the protocol header */
};
#define ICE_PARSER_PROTO_OFF_PAIR_SIZE 16
#define ICE_PARSER_FLAG_PSR_SIZE 8
struct ice_parser_result {
u16 ptype; /* 16 bits hardware PTYPE */
/* array of protocol and header offset pairs */
struct ice_parser_proto_off po[ICE_PARSER_PROTO_OFF_PAIR_SIZE];
int po_num; /* # of protocol-offset pairs must <= 16 */
u64 flags_psr; /* parser flags */
u64 flags_pkt; /* packet flags */
u16 flags_sw; /* key builder flags for SW */
u16 flags_acl; /* key builder flags for ACL */
u16 flags_fd; /* key builder flags for FD */
u16 flags_rss; /* key builder flags for RSS */
};
void ice_parser_rt_reset(struct ice_parser_rt *rt);
void ice_parser_rt_pktbuf_set(struct ice_parser_rt *rt, const u8 *pkt_buf,
int pkt_len);
int ice_parser_rt_execute(struct ice_parser_rt *rt,
struct ice_parser_result *rslt);
struct ice_parser {
struct ice_hw *hw; /* pointer to the hardware structure */
@ -385,8 +471,13 @@ struct ice_parser {
struct ice_xlt_kb *xlt_kb_acl;
struct ice_xlt_kb *xlt_kb_fd;
struct ice_xlt_kb *xlt_kb_rss;
struct ice_parser_rt rt;
};
struct ice_parser *ice_parser_create(struct ice_hw *hw);
void ice_parser_destroy(struct ice_parser *psr);
int ice_parser_run(struct ice_parser *psr, const u8 *pkt_buf,
int pkt_len, struct ice_parser_result *rslt);
void ice_parser_result_dump(struct ice_hw *hw, struct ice_parser_result *rslt);
#endif /* _ICE_PARSER_H_ */

861
drivers/net/ethernet/intel/ice/ice_parser_rt.c Normal file
View File

@ -0,0 +1,861 @@
// SPDX-License-Identifier: GPL-2.0
/* Copyright (C) 2024 Intel Corporation */
#include "ice_common.h"
static void ice_rt_tsr_set(struct ice_parser_rt *rt, u16 tsr)
{
rt->gpr[ICE_GPR_TSR_IDX] = tsr;
}
static void ice_rt_ho_set(struct ice_parser_rt *rt, u16 ho)
{
rt->gpr[ICE_GPR_HO_IDX] = ho;
memcpy(&rt->gpr[ICE_GPR_HV_IDX], &rt->pkt_buf[ho], ICE_GPR_HV_SIZE);
}
static void ice_rt_np_set(struct ice_parser_rt *rt, u16 pc)
{
rt->gpr[ICE_GPR_NP_IDX] = pc;
}
static void ice_rt_nn_set(struct ice_parser_rt *rt, u16 node)
{
rt->gpr[ICE_GPR_NN_IDX] = node;
}
static void
ice_rt_flag_set(struct ice_parser_rt *rt, unsigned int idx, bool set)
{
struct ice_hw *hw = rt->psr->hw;
unsigned int word, id;
word = idx / ICE_GPR_FLG_SIZE;
id = idx % ICE_GPR_FLG_SIZE;
if (set) {
rt->gpr[ICE_GPR_FLG_IDX + word] |= (u16)BIT(id);
ice_debug(hw, ICE_DBG_PARSER, "Set parser flag %u\n", idx);
} else {
rt->gpr[ICE_GPR_FLG_IDX + word] &= ~(u16)BIT(id);
ice_debug(hw, ICE_DBG_PARSER, "Clear parser flag %u\n", idx);
}
}
static void ice_rt_gpr_set(struct ice_parser_rt *rt, int idx, u16 val)
{
struct ice_hw *hw = rt->psr->hw;
if (idx == ICE_GPR_HO_IDX)
ice_rt_ho_set(rt, val);
else
rt->gpr[idx] = val;
ice_debug(hw, ICE_DBG_PARSER, "Set GPR %d value %d\n", idx, val);
}
static void ice_rt_err_set(struct ice_parser_rt *rt, unsigned int idx, bool set)
{
struct ice_hw *hw = rt->psr->hw;
if (set) {
rt->gpr[ICE_GPR_ERR_IDX] |= (u16)BIT(idx);
ice_debug(hw, ICE_DBG_PARSER, "Set parser error %u\n", idx);
} else {
rt->gpr[ICE_GPR_ERR_IDX] &= ~(u16)BIT(idx);
ice_debug(hw, ICE_DBG_PARSER, "Reset parser error %u\n", idx);
}
}
/**
* ice_parser_rt_reset - reset the parser runtime
* @rt: pointer to the parser runtime
*/
void ice_parser_rt_reset(struct ice_parser_rt *rt)
{
struct ice_parser *psr = rt->psr;
struct ice_metainit_item *mi;
unsigned int i;
mi = &psr->mi_table[0];
memset(rt, 0, sizeof(*rt));
rt->psr = psr;
ice_rt_tsr_set(rt, mi->tsr);
ice_rt_ho_set(rt, mi->ho);
ice_rt_np_set(rt, mi->pc);
ice_rt_nn_set(rt, mi->pg_rn);
for (i = 0; i < ICE_PARSER_FLG_NUM; i++) {
if (mi->flags & BIT(i))
ice_rt_flag_set(rt, i, true);
}
}
/**
* ice_parser_rt_pktbuf_set - set a packet into parser runtime
* @rt: pointer to the parser runtime
* @pkt_buf: buffer with packet data
* @pkt_len: packet buffer length
*/
void ice_parser_rt_pktbuf_set(struct ice_parser_rt *rt, const u8 *pkt_buf,
int pkt_len)
{
int len = min(ICE_PARSER_MAX_PKT_LEN, pkt_len);
u16 ho = rt->gpr[ICE_GPR_HO_IDX];
memcpy(rt->pkt_buf, pkt_buf, len);
rt->pkt_len = pkt_len;
memcpy(&rt->gpr[ICE_GPR_HV_IDX], &rt->pkt_buf[ho], ICE_GPR_HV_SIZE);
}
static void ice_bst_key_init(struct ice_parser_rt *rt,
struct ice_imem_item *imem)
{
u8 tsr = (u8)rt->gpr[ICE_GPR_TSR_IDX];
u16 ho = rt->gpr[ICE_GPR_HO_IDX];
u8 *key = rt->bst_key;
int idd, i;
idd = ICE_BST_TCAM_KEY_SIZE - 1;
if (imem->b_kb.tsr_ctrl)
key[idd] = tsr;
else
key[idd] = imem->b_kb.prio;
idd = ICE_BST_KEY_TCAM_SIZE - 1;
for (i = idd; i >= 0; i--) {
int j;
j = ho + idd - i;
if (j < ICE_PARSER_MAX_PKT_LEN)
key[i] = rt->pkt_buf[ho + idd - i];
else
key[i] = 0;
}
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Generated Boost TCAM Key:\n");
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "%02X %02X %02X %02X %02X %02X %02X %02X %02X %02X\n",
key[0], key[1], key[2], key[3], key[4],
key[5], key[6], key[7], key[8], key[9]);
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "\n");
}
static u16 ice_bit_rev_u16(u16 v, int len)
{
return bitrev16(v) >> (BITS_PER_TYPE(v) - len);
}
static u32 ice_bit_rev_u32(u32 v, int len)
{
return bitrev32(v) >> (BITS_PER_TYPE(v) - len);
}
static u32 ice_hv_bit_sel(struct ice_parser_rt *rt, int start, int len)
{
int offset;
u32 buf[2];
u64 val;
offset = ICE_GPR_HV_IDX + (start / BITS_PER_TYPE(u16));
memcpy(buf, &rt->gpr[offset], sizeof(buf));
buf[0] = bitrev8x4(buf[0]);
buf[1] = bitrev8x4(buf[1]);
val = *(u64 *)buf;
val >>= start % BITS_PER_TYPE(u16);
return ice_bit_rev_u32(val, len);
}
static u32 ice_pk_build(struct ice_parser_rt *rt,
struct ice_np_keybuilder *kb)
{
if (kb->opc == ICE_NPKB_OPC_EXTRACT)
return ice_hv_bit_sel(rt, kb->start_reg0, kb->len_reg1);
else if (kb->opc == ICE_NPKB_OPC_BUILD)
return rt->gpr[kb->start_reg0] |
((u32)rt->gpr[kb->len_reg1] << BITS_PER_TYPE(u16));
else if (kb->opc == ICE_NPKB_OPC_BYPASS)
return 0;
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Unsupported OP Code %u\n",
kb->opc);
return U32_MAX;
}
static bool ice_flag_get(struct ice_parser_rt *rt, unsigned int index)
{
int word = index / ICE_GPR_FLG_SIZE;
int id = index % ICE_GPR_FLG_SIZE;
return !!(rt->gpr[ICE_GPR_FLG_IDX + word] & (u16)BIT(id));
}
static int ice_imem_pgk_init(struct ice_parser_rt *rt,
struct ice_imem_item *imem)
{
memset(&rt->pg_key, 0, sizeof(rt->pg_key));
rt->pg_key.next_proto = ice_pk_build(rt, &imem->np_kb);
if (rt->pg_key.next_proto == U32_MAX)
return -EINVAL;
if (imem->pg_kb.flag0_ena)
rt->pg_key.flag0 = ice_flag_get(rt, imem->pg_kb.flag0_idx);
if (imem->pg_kb.flag1_ena)
rt->pg_key.flag1 = ice_flag_get(rt, imem->pg_kb.flag1_idx);
if (imem->pg_kb.flag2_ena)
rt->pg_key.flag2 = ice_flag_get(rt, imem->pg_kb.flag2_idx);
if (imem->pg_kb.flag3_ena)
rt->pg_key.flag3 = ice_flag_get(rt, imem->pg_kb.flag3_idx);
rt->pg_key.alu_reg = rt->gpr[imem->pg_kb.alu_reg_idx];
rt->pg_key.node_id = rt->gpr[ICE_GPR_NN_IDX];
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Generate Parse Graph Key: node_id(%d), flag0-3(%d,%d,%d,%d), boost_idx(%d), alu_reg(0x%04x), next_proto(0x%08x)\n",
rt->pg_key.node_id,
rt->pg_key.flag0,
rt->pg_key.flag1,
rt->pg_key.flag2,
rt->pg_key.flag3,
rt->pg_key.boost_idx,
rt->pg_key.alu_reg,
rt->pg_key.next_proto);
return 0;
}
static void ice_imem_alu0_set(struct ice_parser_rt *rt,
struct ice_imem_item *imem)
{
rt->alu0 = &imem->alu0;
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Load ALU0 from imem pc %d\n",
imem->idx);
}
static void ice_imem_alu1_set(struct ice_parser_rt *rt,
struct ice_imem_item *imem)
{
rt->alu1 = &imem->alu1;
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Load ALU1 from imem pc %d\n",
imem->idx);
}
static void ice_imem_alu2_set(struct ice_parser_rt *rt,
struct ice_imem_item *imem)
{
rt->alu2 = &imem->alu2;
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Load ALU2 from imem pc %d\n",
imem->idx);
}
static void ice_imem_pgp_set(struct ice_parser_rt *rt,
struct ice_imem_item *imem)
{
rt->pg_prio = imem->pg_prio;
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Load PG priority %d from imem pc %d\n",
rt->pg_prio, imem->idx);
}
static int ice_bst_pgk_init(struct ice_parser_rt *rt,
struct ice_bst_tcam_item *bst)
{
memset(&rt->pg_key, 0, sizeof(rt->pg_key));
rt->pg_key.boost_idx = bst->hit_idx_grp;
rt->pg_key.next_proto = ice_pk_build(rt, &bst->np_kb);
if (rt->pg_key.next_proto == U32_MAX)
return -EINVAL;
if (bst->pg_kb.flag0_ena)
rt->pg_key.flag0 = ice_flag_get(rt, bst->pg_kb.flag0_idx);
if (bst->pg_kb.flag1_ena)
rt->pg_key.flag1 = ice_flag_get(rt, bst->pg_kb.flag1_idx);
if (bst->pg_kb.flag2_ena)
rt->pg_key.flag2 = ice_flag_get(rt, bst->pg_kb.flag2_idx);
if (bst->pg_kb.flag3_ena)
rt->pg_key.flag3 = ice_flag_get(rt, bst->pg_kb.flag3_idx);
rt->pg_key.alu_reg = rt->gpr[bst->pg_kb.alu_reg_idx];
rt->pg_key.node_id = rt->gpr[ICE_GPR_NN_IDX];
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Generate Parse Graph Key: node_id(%d), flag0-3(%d,%d,%d,%d), boost_idx(%d), alu_reg(0x%04x), next_proto(0x%08x)\n",
rt->pg_key.node_id,
rt->pg_key.flag0,
rt->pg_key.flag1,
rt->pg_key.flag2,
rt->pg_key.flag3,
rt->pg_key.boost_idx,
rt->pg_key.alu_reg,
rt->pg_key.next_proto);
return 0;
}
static void ice_bst_alu0_set(struct ice_parser_rt *rt,
struct ice_bst_tcam_item *bst)
{
rt->alu0 = &bst->alu0;
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Load ALU0 from boost address %d\n",
bst->addr);
}
static void ice_bst_alu1_set(struct ice_parser_rt *rt,
struct ice_bst_tcam_item *bst)
{
rt->alu1 = &bst->alu1;
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Load ALU1 from boost address %d\n",
bst->addr);
}
static void ice_bst_alu2_set(struct ice_parser_rt *rt,
struct ice_bst_tcam_item *bst)
{
rt->alu2 = &bst->alu2;
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Load ALU2 from boost address %d\n",
bst->addr);
}
static void ice_bst_pgp_set(struct ice_parser_rt *rt,
struct ice_bst_tcam_item *bst)
{
rt->pg_prio = bst->pg_prio;
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Load PG priority %d from boost address %d\n",
rt->pg_prio, bst->addr);
}
static struct ice_pg_cam_item *ice_rt_pg_cam_match(struct ice_parser_rt *rt)
{
struct ice_parser *psr = rt->psr;
struct ice_pg_cam_item *item;
item = ice_pg_cam_match(psr->pg_cam_table, ICE_PG_CAM_TABLE_SIZE,
&rt->pg_key);
if (!item)
item = ice_pg_cam_match(psr->pg_sp_cam_table,
ICE_PG_SP_CAM_TABLE_SIZE, &rt->pg_key);
return item;
}
static
struct ice_pg_nm_cam_item *ice_rt_pg_nm_cam_match(struct ice_parser_rt *rt)
{
struct ice_parser *psr = rt->psr;
struct ice_pg_nm_cam_item *item;
item = ice_pg_nm_cam_match(psr->pg_nm_cam_table,
ICE_PG_NM_CAM_TABLE_SIZE, &rt->pg_key);
if (!item)
item = ice_pg_nm_cam_match(psr->pg_nm_sp_cam_table,
ICE_PG_NM_SP_CAM_TABLE_SIZE,
&rt->pg_key);
return item;
}
static void ice_gpr_add(struct ice_parser_rt *rt, int idx, u16 val)
{
rt->pu.gpr_val_upd[idx] = true;
rt->pu.gpr_val[idx] = val;
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Pending update for register %d value %d\n",
idx, val);
}
static void ice_pg_exe(struct ice_parser_rt *rt)
{
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Executing ParseGraph action ...\n");
ice_gpr_add(rt, ICE_GPR_NP_IDX, rt->action->next_pc);
ice_gpr_add(rt, ICE_GPR_NN_IDX, rt->action->next_node);
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Executing ParseGraph action done.\n");
}
static void ice_flg_add(struct ice_parser_rt *rt, int idx, bool val)
{
rt->pu.flg_msk |= BIT(idx);
if (val)
rt->pu.flg_val |= BIT(idx);
else
rt->pu.flg_val &= ~BIT(idx);
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Pending update for flag %d value %d\n",
idx, val);
}
static void ice_flg_update(struct ice_parser_rt *rt, struct ice_alu *alu)
{
u32 hv_bit_sel;
int i;
if (!alu->dedicate_flags_ena)
return;
if (alu->flags_extr_imm) {
for (i = 0; i < alu->dst_len; i++)
ice_flg_add(rt, alu->dst_start + i,
!!(alu->flags_start_imm & BIT(i)));
} else {
for (i = 0; i < alu->dst_len; i++) {
hv_bit_sel = ice_hv_bit_sel(rt,
alu->flags_start_imm + i,
1);
ice_flg_add(rt, alu->dst_start + i, !!hv_bit_sel);
}
}
}
static void ice_po_update(struct ice_parser_rt *rt, struct ice_alu *alu)
{
if (alu->proto_offset_opc == ICE_PO_OFF_HDR_ADD)
rt->po = (u16)(rt->gpr[ICE_GPR_HO_IDX] + alu->proto_offset);
else if (alu->proto_offset_opc == ICE_PO_OFF_HDR_SUB)
rt->po = (u16)(rt->gpr[ICE_GPR_HO_IDX] - alu->proto_offset);
else if (alu->proto_offset_opc == ICE_PO_OFF_REMAIN)
rt->po = rt->gpr[ICE_GPR_HO_IDX];
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Update Protocol Offset = %d\n",
rt->po);
}
static u16 ice_reg_bit_sel(struct ice_parser_rt *rt, int reg_idx,
int start, int len)
{
int offset;
u32 val;
offset = ICE_GPR_HV_IDX + (start / BITS_PER_TYPE(u16));
memcpy(&val, &rt->gpr[offset], sizeof(val));
val = bitrev8x4(val);
val >>= start % BITS_PER_TYPE(u16);
return ice_bit_rev_u16(val, len);
}
static void ice_err_add(struct ice_parser_rt *rt, int idx, bool val)
{
rt->pu.err_msk |= (u16)BIT(idx);
if (val)
rt->pu.flg_val |= (u64)BIT_ULL(idx);
else
rt->pu.flg_val &= ~(u64)BIT_ULL(idx);
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Pending update for error %d value %d\n",
idx, val);
}
static void ice_dst_reg_bit_set(struct ice_parser_rt *rt, struct ice_alu *alu,
bool val)
{
u16 flg_idx;
if (alu->dedicate_flags_ena) {
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "DedicatedFlagsEnable should not be enabled in opcode %d\n",
alu->opc);
return;
}
if (alu->dst_reg_id == ICE_GPR_ERR_IDX) {
if (alu->dst_start >= ICE_PARSER_ERR_NUM) {
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Invalid error %d\n",
alu->dst_start);
return;
}
ice_err_add(rt, alu->dst_start, val);
} else if (alu->dst_reg_id >= ICE_GPR_FLG_IDX) {
flg_idx = (u16)(((alu->dst_reg_id - ICE_GPR_FLG_IDX) << 4) +
alu->dst_start);
if (flg_idx >= ICE_PARSER_FLG_NUM) {
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Invalid flag %d\n",
flg_idx);
return;
}
ice_flg_add(rt, flg_idx, val);
} else {
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Unexpected Dest Register Bit set, RegisterID %d Start %d\n",
alu->dst_reg_id, alu->dst_start);
}
}
static void ice_alu_exe(struct ice_parser_rt *rt, struct ice_alu *alu)
{
u16 dst, src, shift, imm;
if (alu->shift_xlate_sel) {
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "shift_xlate_sel != 0 is not expected\n");
return;
}
ice_po_update(rt, alu);
ice_flg_update(rt, alu);
dst = rt->gpr[alu->dst_reg_id];
src = ice_reg_bit_sel(rt, alu->src_reg_id,
alu->src_start, alu->src_len);
shift = alu->shift_xlate_key;
imm = alu->imm;
switch (alu->opc) {
case ICE_ALU_PARK:
break;
case ICE_ALU_MOV_ADD:
dst = (src << shift) + imm;
ice_gpr_add(rt, alu->dst_reg_id, dst);
break;
case ICE_ALU_ADD:
dst += (src << shift) + imm;
ice_gpr_add(rt, alu->dst_reg_id, dst);
break;
case ICE_ALU_ORLT:
if (src < imm)
ice_dst_reg_bit_set(rt, alu, true);
ice_gpr_add(rt, ICE_GPR_NP_IDX, alu->branch_addr);
break;
case ICE_ALU_OREQ:
if (src == imm)
ice_dst_reg_bit_set(rt, alu, true);
ice_gpr_add(rt, ICE_GPR_NP_IDX, alu->branch_addr);
break;
case ICE_ALU_SETEQ:
ice_dst_reg_bit_set(rt, alu, src == imm);
ice_gpr_add(rt, ICE_GPR_NP_IDX, alu->branch_addr);
break;
case ICE_ALU_MOV_XOR:
dst = (src << shift) ^ imm;
ice_gpr_add(rt, alu->dst_reg_id, dst);
break;
default:
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Unsupported ALU instruction %d\n",
alu->opc);
break;
}
}
static void ice_alu0_exe(struct ice_parser_rt *rt)
{
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Executing ALU0 ...\n");
ice_alu_exe(rt, rt->alu0);
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Executing ALU0 done.\n");
}
static void ice_alu1_exe(struct ice_parser_rt *rt)
{
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Executing ALU1 ...\n");
ice_alu_exe(rt, rt->alu1);
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Executing ALU1 done.\n");
}
static void ice_alu2_exe(struct ice_parser_rt *rt)
{
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Executing ALU2 ...\n");
ice_alu_exe(rt, rt->alu2);
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Executing ALU2 done.\n");
}
static void ice_pu_exe(struct ice_parser_rt *rt)
{
struct ice_gpr_pu *pu = &rt->pu;
unsigned int i;
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Updating Registers ...\n");
for (i = 0; i < ICE_PARSER_GPR_NUM; i++) {
if (pu->gpr_val_upd[i])
ice_rt_gpr_set(rt, i, pu->gpr_val[i]);
}
for (i = 0; i < ICE_PARSER_FLG_NUM; i++) {
if (pu->flg_msk & BIT(i))
ice_rt_flag_set(rt, i, pu->flg_val & BIT(i));
}
for (i = 0; i < ICE_PARSER_ERR_NUM; i++) {
if (pu->err_msk & BIT(i))
ice_rt_err_set(rt, i, pu->err_val & BIT(i));
}
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Updating Registers done.\n");
}
static void ice_alu_pg_exe(struct ice_parser_rt *rt)
{
memset(&rt->pu, 0, sizeof(rt->pu));
switch (rt->pg_prio) {
case (ICE_PG_P0):
ice_pg_exe(rt);
ice_alu0_exe(rt);
ice_alu1_exe(rt);
ice_alu2_exe(rt);
break;
case (ICE_PG_P1):
ice_alu0_exe(rt);
ice_pg_exe(rt);
ice_alu1_exe(rt);
ice_alu2_exe(rt);
break;
case (ICE_PG_P2):
ice_alu0_exe(rt);
ice_alu1_exe(rt);
ice_pg_exe(rt);
ice_alu2_exe(rt);
break;
case (ICE_PG_P3):
ice_alu0_exe(rt);
ice_alu1_exe(rt);
ice_alu2_exe(rt);
ice_pg_exe(rt);
break;
}
ice_pu_exe(rt);
if (rt->action->ho_inc == 0)
return;
if (rt->action->ho_polarity)
ice_rt_ho_set(rt, rt->gpr[ICE_GPR_HO_IDX] + rt->action->ho_inc);
else
ice_rt_ho_set(rt, rt->gpr[ICE_GPR_HO_IDX] - rt->action->ho_inc);
}
static void ice_proto_off_update(struct ice_parser_rt *rt)
{
struct ice_parser *psr = rt->psr;
if (rt->action->is_pg) {
struct ice_proto_grp_item *proto_grp =
&psr->proto_grp_table[rt->action->proto_id];
u16 po;
int i;
for (i = 0; i < ICE_PROTO_COUNT_PER_GRP; i++) {
struct ice_proto_off *entry = &proto_grp->po[i];
if (entry->proto_id == U8_MAX)
break;
if (!entry->polarity)
po = rt->po + entry->offset;
else
po = rt->po - entry->offset;
rt->protocols[entry->proto_id] = true;
rt->offsets[entry->proto_id] = po;
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Set Protocol %d at offset %d\n",
entry->proto_id, po);
}
} else {
rt->protocols[rt->action->proto_id] = true;
rt->offsets[rt->action->proto_id] = rt->po;
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Set Protocol %d at offset %d\n",
rt->action->proto_id, rt->po);
}
}
static void ice_marker_set(struct ice_parser_rt *rt, int idx)
{
unsigned int byte = idx / BITS_PER_BYTE;
unsigned int bit = idx % BITS_PER_BYTE;
rt->markers[byte] |= (u8)BIT(bit);
}
static void ice_marker_update(struct ice_parser_rt *rt)
{
struct ice_parser *psr = rt->psr;
if (rt->action->is_mg) {
struct ice_mk_grp_item *mk_grp =
&psr->mk_grp_table[rt->action->marker_id];
int i;
for (i = 0; i < ICE_MARKER_ID_NUM; i++) {
u8 marker = mk_grp->markers[i];
if (marker == ICE_MARKER_MAX_SIZE)
break;
ice_marker_set(rt, marker);
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Set Marker %d\n",
marker);
}
} else {
if (rt->action->marker_id != ICE_MARKER_MAX_SIZE)
ice_marker_set(rt, rt->action->marker_id);
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Set Marker %d\n",
rt->action->marker_id);
}
}
static u16 ice_ptype_resolve(struct ice_parser_rt *rt)
{
struct ice_ptype_mk_tcam_item *item;
struct ice_parser *psr = rt->psr;
item = ice_ptype_mk_tcam_match(psr->ptype_mk_tcam_table,
rt->markers, ICE_MARKER_ID_SIZE);
if (item)
return item->ptype;
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Could not resolve PTYPE\n");
return U16_MAX;
}
static void ice_proto_off_resolve(struct ice_parser_rt *rt,
struct ice_parser_result *rslt)
{
int i;
for (i = 0; i < ICE_PO_PAIR_SIZE - 1; i++) {
if (rt->protocols[i]) {
rslt->po[rslt->po_num].proto_id = (u8)i;
rslt->po[rslt->po_num].offset = rt->offsets[i];
rslt->po_num++;
}
}
}
static void ice_result_resolve(struct ice_parser_rt *rt,
struct ice_parser_result *rslt)
{
struct ice_parser *psr = rt->psr;
memset(rslt, 0, sizeof(*rslt));
memcpy(&rslt->flags_psr, &rt->gpr[ICE_GPR_FLG_IDX],
ICE_PARSER_FLAG_PSR_SIZE);
rslt->flags_pkt = ice_flg_redirect(psr->flg_rd_table, rslt->flags_psr);
rslt->flags_sw = ice_xlt_kb_flag_get(psr->xlt_kb_sw, rslt->flags_pkt);
rslt->flags_fd = ice_xlt_kb_flag_get(psr->xlt_kb_fd, rslt->flags_pkt);
rslt->flags_rss = ice_xlt_kb_flag_get(psr->xlt_kb_rss, rslt->flags_pkt);
ice_proto_off_resolve(rt, rslt);
rslt->ptype = ice_ptype_resolve(rt);
}
/**
* ice_parser_rt_execute - parser execution routine
* @rt: pointer to the parser runtime
* @rslt: input/output parameter to save parser result
*
* Return: 0 on success or errno.
*/
int ice_parser_rt_execute(struct ice_parser_rt *rt,
struct ice_parser_result *rslt)
{
struct ice_pg_nm_cam_item *pg_nm_cam;
struct ice_parser *psr = rt->psr;
struct ice_pg_cam_item *pg_cam;
int status = 0;
u16 node;
u16 pc;
node = rt->gpr[ICE_GPR_NN_IDX];
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Start with Node: %u\n", node);
while (true) {
struct ice_bst_tcam_item *bst;
struct ice_imem_item *imem;
pc = rt->gpr[ICE_GPR_NP_IDX];
imem = &psr->imem_table[pc];
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Load imem at pc: %u\n",
pc);
ice_bst_key_init(rt, imem);
bst = ice_bst_tcam_match(psr->bst_tcam_table, rt->bst_key);
if (!bst) {
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "No Boost TCAM Match\n");
status = ice_imem_pgk_init(rt, imem);
if (status)
break;
ice_imem_alu0_set(rt, imem);
ice_imem_alu1_set(rt, imem);
ice_imem_alu2_set(rt, imem);
ice_imem_pgp_set(rt, imem);
} else {
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Boost TCAM Match address: %u\n",
bst->addr);
if (imem->b_m.pg) {
status = ice_bst_pgk_init(rt, bst);
if (status)
break;
ice_bst_pgp_set(rt, bst);
} else {
status = ice_imem_pgk_init(rt, imem);
if (status)
break;
ice_imem_pgp_set(rt, imem);
}
if (imem->b_m.alu0)
ice_bst_alu0_set(rt, bst);
else
ice_imem_alu0_set(rt, imem);
if (imem->b_m.alu1)
ice_bst_alu1_set(rt, bst);
else
ice_imem_alu1_set(rt, imem);
if (imem->b_m.alu2)
ice_bst_alu2_set(rt, bst);
else
ice_imem_alu2_set(rt, imem);
}
rt->action = NULL;
pg_cam = ice_rt_pg_cam_match(rt);
if (!pg_cam) {
pg_nm_cam = ice_rt_pg_nm_cam_match(rt);
if (pg_nm_cam) {
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Match ParseGraph Nomatch CAM Address %u\n",
pg_nm_cam->idx);
rt->action = &pg_nm_cam->action;
}
} else {
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Match ParseGraph CAM Address %u\n",
pg_cam->idx);
rt->action = &pg_cam->action;
}
if (!rt->action) {
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Failed to match ParseGraph CAM, stop parsing.\n");
status = -EINVAL;
break;
}
ice_alu_pg_exe(rt);
ice_marker_update(rt);
ice_proto_off_update(rt);
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Go to node %u\n",
rt->action->next_node);
if (rt->action->is_last_round) {
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Last Round in ParseGraph Action, stop parsing.\n");
break;
}
if (rt->gpr[ICE_GPR_HO_IDX] >= rt->pkt_len) {
ice_debug(rt->psr->hw, ICE_DBG_PARSER, "Header Offset (%u) is larger than packet len (%u), stop parsing\n",
rt->gpr[ICE_GPR_HO_IDX], rt->pkt_len);
break;
}
}
ice_result_resolve(rt, rslt);
return status;
}