+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-/* Marvell RVU Admin Function driver
- *
- * Copyright (C) 2022 Marvell.
- *
- */
-
-#include <linux/bitfield.h>
-#include <linux/module.h>
-#include <linux/pci.h>
-#include <linux/firmware.h>
-#include <linux/stddef.h>
-#include <linux/debugfs.h>
-#include <linux/bitfield.h>
-
-#include "rvu_struct.h"
-#include "rvu_reg.h"
-#include "rvu.h"
-#include "npc.h"
-#include "cgx.h"
-#include "rvu_npc_hash.h"
-#include "rvu_npc_fs.h"
-#include "rvu_npc_hash.h"
-
-static u64 rvu_npc_wide_extract(const u64 input[], size_t start_bit,
- size_t width_bits)
-{
- const u64 mask = ~(u64)((~(__uint128_t)0) << width_bits);
- const size_t msb = start_bit + width_bits - 1;
- const size_t lword = start_bit >> 6;
- const size_t uword = msb >> 6;
- size_t lbits;
- u64 hi, lo;
-
- if (lword == uword)
- return (input[lword] >> (start_bit & 63)) & mask;
-
- lbits = 64 - (start_bit & 63);
- hi = input[uword];
- lo = (input[lword] >> (start_bit & 63));
- return ((hi << lbits) | lo) & mask;
-}
-
-static void rvu_npc_lshift_key(u64 *key, size_t key_bit_len)
-{
- u64 prev_orig_word = 0;
- u64 cur_orig_word = 0;
- size_t extra = key_bit_len % 64;
- size_t max_idx = key_bit_len / 64;
- size_t i;
-
- if (extra)
- max_idx++;
-
- for (i = 0; i < max_idx; i++) {
- cur_orig_word = key[i];
- key[i] = key[i] << 1;
- key[i] |= ((prev_orig_word >> 63) & 0x1);
- prev_orig_word = cur_orig_word;
- }
-}
-
-static u32 rvu_npc_toeplitz_hash(const u64 *data, u64 *key, size_t data_bit_len,
- size_t key_bit_len)
-{
- u32 hash_out = 0;
- u64 temp_data = 0;
- int i;
-
- for (i = data_bit_len - 1; i >= 0; i--) {
- temp_data = (data[i / 64]);
- temp_data = temp_data >> (i % 64);
- temp_data &= 0x1;
- if (temp_data)
- hash_out ^= (u32)(rvu_npc_wide_extract(key, key_bit_len - 32, 32));
-
- rvu_npc_lshift_key(key, key_bit_len);
- }
-
- return hash_out;
-}
-
-u32 npc_field_hash_calc(u64 *ldata, struct npc_mcam_kex_hash *mkex_hash,
- u64 *secret_key, u8 intf, u8 hash_idx)
-{
- u64 hash_key[3];
- u64 data_padded[2];
- u32 field_hash;
-
- hash_key[0] = secret_key[1] << 31;
- hash_key[0] |= secret_key[2];
- hash_key[1] = secret_key[1] >> 33;
- hash_key[1] |= secret_key[0] << 31;
- hash_key[2] = secret_key[0] >> 33;
-
- data_padded[0] = mkex_hash->hash_mask[intf][hash_idx][0] & ldata[0];
- data_padded[1] = mkex_hash->hash_mask[intf][hash_idx][1] & ldata[1];
- field_hash = rvu_npc_toeplitz_hash(data_padded, hash_key, 128, 159);
-
- field_hash &= mkex_hash->hash_ctrl[intf][hash_idx] >> 32;
- field_hash |= mkex_hash->hash_ctrl[intf][hash_idx];
- return field_hash;
-}
-
-static u64 npc_update_use_hash(int lt, int ld)
-{
- u64 cfg = 0;
-
- switch (lt) {
- case NPC_LT_LC_IP6:
- /* Update use_hash(bit-20) and bytesm1 (bit-16:19)
- * in KEX_LD_CFG
- */
- cfg = KEX_LD_CFG_USE_HASH(0x1, 0x03,
- ld ? 0x8 : 0x18,
- 0x1, 0x0, 0x10);
- break;
- }
-
- return cfg;
-}
-
-static void npc_program_mkex_hash_rx(struct rvu *rvu, int blkaddr,
- u8 intf)
-{
- struct npc_mcam_kex_hash *mkex_hash = rvu->kpu.mkex_hash;
- int lid, lt, ld, hash_cnt = 0;
-
- if (is_npc_intf_tx(intf))
- return;
-
- /* Program HASH_CFG */
- for (lid = 0; lid < NPC_MAX_LID; lid++) {
- for (lt = 0; lt < NPC_MAX_LT; lt++) {
- for (ld = 0; ld < NPC_MAX_LD; ld++) {
- if (mkex_hash->lid_lt_ld_hash_en[intf][lid][lt][ld]) {
- u64 cfg = npc_update_use_hash(lt, ld);
-
- hash_cnt++;
- if (hash_cnt == NPC_MAX_HASH)
- return;
-
- /* Set updated KEX configuration */
- SET_KEX_LD(intf, lid, lt, ld, cfg);
- /* Set HASH configuration */
- SET_KEX_LD_HASH(intf, ld,
- mkex_hash->hash[intf][ld]);
- SET_KEX_LD_HASH_MASK(intf, ld, 0,
- mkex_hash->hash_mask[intf][ld][0]);
- SET_KEX_LD_HASH_MASK(intf, ld, 1,
- mkex_hash->hash_mask[intf][ld][1]);
- SET_KEX_LD_HASH_CTRL(intf, ld,
- mkex_hash->hash_ctrl[intf][ld]);
- }
- }
- }
- }
-}
-
-static void npc_program_mkex_hash_tx(struct rvu *rvu, int blkaddr,
- u8 intf)
-{
- struct npc_mcam_kex_hash *mkex_hash = rvu->kpu.mkex_hash;
- int lid, lt, ld, hash_cnt = 0;
-
- if (is_npc_intf_rx(intf))
- return;
-
- /* Program HASH_CFG */
- for (lid = 0; lid < NPC_MAX_LID; lid++) {
- for (lt = 0; lt < NPC_MAX_LT; lt++) {
- for (ld = 0; ld < NPC_MAX_LD; ld++)
- if (mkex_hash->lid_lt_ld_hash_en[intf][lid][lt][ld]) {
- u64 cfg = npc_update_use_hash(lt, ld);
-
- hash_cnt++;
- if (hash_cnt == NPC_MAX_HASH)
- return;
-
- /* Set updated KEX configuration */
- SET_KEX_LD(intf, lid, lt, ld, cfg);
- /* Set HASH configuration */
- SET_KEX_LD_HASH(intf, ld,
- mkex_hash->hash[intf][ld]);
- SET_KEX_LD_HASH_MASK(intf, ld, 0,
- mkex_hash->hash_mask[intf][ld][0]);
- SET_KEX_LD_HASH_MASK(intf, ld, 1,
- mkex_hash->hash_mask[intf][ld][1]);
- SET_KEX_LD_HASH_CTRL(intf, ld,
- mkex_hash->hash_ctrl[intf][ld]);
- hash_cnt++;
- if (hash_cnt == NPC_MAX_HASH)
- return;
- }
- }
- }
-}
-
-void npc_config_secret_key(struct rvu *rvu, int blkaddr)
-{
- struct hw_cap *hwcap = &rvu->hw->cap;
- struct rvu_hwinfo *hw = rvu->hw;
- u8 intf;
-
- if (!hwcap->npc_hash_extract) {
- dev_info(rvu->dev, "HW does not support secret key configuration\n");
- return;
- }
-
- for (intf = 0; intf < hw->npc_intfs; intf++) {
- rvu_write64(rvu, blkaddr, NPC_AF_INTFX_SECRET_KEY0(intf),
- RVU_NPC_HASH_SECRET_KEY0);
- rvu_write64(rvu, blkaddr, NPC_AF_INTFX_SECRET_KEY1(intf),
- RVU_NPC_HASH_SECRET_KEY1);
- rvu_write64(rvu, blkaddr, NPC_AF_INTFX_SECRET_KEY2(intf),
- RVU_NPC_HASH_SECRET_KEY2);
- }
-}
-
-void npc_program_mkex_hash(struct rvu *rvu, int blkaddr)
-{
- struct hw_cap *hwcap = &rvu->hw->cap;
- struct rvu_hwinfo *hw = rvu->hw;
- u8 intf;
-
- if (!hwcap->npc_hash_extract) {
- dev_dbg(rvu->dev, "Field hash extract feature is not supported\n");
- return;
- }
-
- for (intf = 0; intf < hw->npc_intfs; intf++) {
- npc_program_mkex_hash_rx(rvu, blkaddr, intf);
- npc_program_mkex_hash_tx(rvu, blkaddr, intf);
- }
-}
-
-void npc_update_field_hash(struct rvu *rvu, u8 intf,
- struct mcam_entry *entry,
- int blkaddr,
- u64 features,
- struct flow_msg *pkt,
- struct flow_msg *mask,
- struct flow_msg *opkt,
- struct flow_msg *omask)
-{
- struct npc_mcam_kex_hash *mkex_hash = rvu->kpu.mkex_hash;
- struct npc_get_secret_key_req req;
- struct npc_get_secret_key_rsp rsp;
- u64 ldata[2], cfg;
- u32 field_hash;
- u8 hash_idx;
-
- if (!rvu->hw->cap.npc_hash_extract) {
- dev_dbg(rvu->dev, "%s: Field hash extract feature is not supported\n", __func__);
- return;
- }
-
- req.intf = intf;
- rvu_mbox_handler_npc_get_secret_key(rvu, &req, &rsp);
-
- for (hash_idx = 0; hash_idx < NPC_MAX_HASH; hash_idx++) {
- cfg = rvu_read64(rvu, blkaddr, NPC_AF_INTFX_HASHX_CFG(intf, hash_idx));
- if ((cfg & BIT_ULL(11)) && (cfg & BIT_ULL(12))) {
- u8 lid = (cfg & GENMASK_ULL(10, 8)) >> 8;
- u8 ltype = (cfg & GENMASK_ULL(7, 4)) >> 4;
- u8 ltype_mask = cfg & GENMASK_ULL(3, 0);
-
- if (mkex_hash->lid_lt_ld_hash_en[intf][lid][ltype][hash_idx]) {
- switch (ltype & ltype_mask) {
- /* If hash extract enabled is supported for IPv6 then
- * 128 bit IPv6 source and destination addressed
- * is hashed to 32 bit value.
- */
- case NPC_LT_LC_IP6:
- if (features & BIT_ULL(NPC_SIP_IPV6)) {
- u32 src_ip[IPV6_WORDS];
-
- be32_to_cpu_array(src_ip, pkt->ip6src, IPV6_WORDS);
- ldata[0] = (u64)src_ip[0] << 32 | src_ip[1];
- ldata[1] = (u64)src_ip[2] << 32 | src_ip[3];
- field_hash = npc_field_hash_calc(ldata,
- mkex_hash,
- rsp.secret_key,
- intf,
- hash_idx);
- npc_update_entry(rvu, NPC_SIP_IPV6, entry,
- field_hash, 0, 32, 0, intf);
- memcpy(&opkt->ip6src, &pkt->ip6src,
- sizeof(pkt->ip6src));
- memcpy(&omask->ip6src, &mask->ip6src,
- sizeof(mask->ip6src));
- break;
- }
-
- if (features & BIT_ULL(NPC_DIP_IPV6)) {
- u32 dst_ip[IPV6_WORDS];
-
- be32_to_cpu_array(dst_ip, pkt->ip6dst, IPV6_WORDS);
- ldata[0] = (u64)dst_ip[0] << 32 | dst_ip[1];
- ldata[1] = (u64)dst_ip[2] << 32 | dst_ip[3];
- field_hash = npc_field_hash_calc(ldata,
- mkex_hash,
- rsp.secret_key,
- intf,
- hash_idx);
- npc_update_entry(rvu, NPC_DIP_IPV6, entry,
- field_hash, 0, 32, 0, intf);
- memcpy(&opkt->ip6dst, &pkt->ip6dst,
- sizeof(pkt->ip6dst));
- memcpy(&omask->ip6dst, &mask->ip6dst,
- sizeof(mask->ip6dst));
- }
- break;
- }
- }
- }
- }
-}
-
-int rvu_mbox_handler_npc_get_secret_key(struct rvu *rvu,
- struct npc_get_secret_key_req *req,
- struct npc_get_secret_key_rsp *rsp)
-{
- u64 *secret_key = rsp->secret_key;
- u8 intf = req->intf;
- int blkaddr;
-
- blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
- if (blkaddr < 0) {
- dev_err(rvu->dev, "%s: NPC block not implemented\n", __func__);
- return -EINVAL;
- }
-
- secret_key[0] = rvu_read64(rvu, blkaddr, NPC_AF_INTFX_SECRET_KEY0(intf));
- secret_key[1] = rvu_read64(rvu, blkaddr, NPC_AF_INTFX_SECRET_KEY1(intf));
- secret_key[2] = rvu_read64(rvu, blkaddr, NPC_AF_INTFX_SECRET_KEY2(intf));
-
- return 0;
-}
-
-/**
- * rvu_npc_exact_mac2u64 - utility function to convert mac address to u64.
- * @macaddr: MAC address.
- * Returns mdata for exact match table.
- */
-static u64 rvu_npc_exact_mac2u64(u8 *mac_addr)
-{
- u64 mac = 0;
- int index;
-
- for (index = ETH_ALEN - 1; index >= 0; index--)
- mac |= ((u64)*mac_addr++) << (8 * index);
-
- return mac;
-}
-
-/**
- * rvu_exact_prepare_mdata - Make mdata for mcam entry
- * @mac: MAC address
- * @chan: Channel number.
- * @ctype: Channel Type.
- * @mask: LDATA mask.
- */
-static u64 rvu_exact_prepare_mdata(u8 *mac, u16 chan, u16 ctype, u64 mask)
-{
- u64 ldata = rvu_npc_exact_mac2u64(mac);
-
- /* Please note that mask is 48bit which excludes chan and ctype.
- * Increase mask bits if we need to include them as well.
- */
- ldata |= ((u64)chan << 48);
- ldata |= ((u64)ctype << 60);
- ldata &= mask;
- ldata = ldata << 2;
-
- return ldata;
-}
-
-/**
- * rvu_exact_calculate_hash - calculate hash index to mem table.
- * @rvu: resource virtualization unit.
- * @chan: Channel number
- * @ctype: Channel type.
- * @mac: MAC address
- * @mask: HASH mask.
- * @table_depth: Depth of table.
- */
-u32 rvu_exact_calculate_hash(struct rvu *rvu, u16 chan, u16 ctype, u8 *mac,
- u64 mask, u32 table_depth)
-{
- struct npc_exact_table *table = rvu->hw->table;
- u64 hash_key[2];
- u64 key_in[2];
- u64 ldata;
- u32 hash;
-
- key_in[0] = RVU_NPC_HASH_SECRET_KEY0;
- key_in[1] = RVU_NPC_HASH_SECRET_KEY2;
-
- hash_key[0] = key_in[0] << 31;
- hash_key[0] |= key_in[1];
- hash_key[1] = key_in[0] >> 33;
-
- ldata = rvu_exact_prepare_mdata(mac, chan, ctype, mask);
-
- dev_dbg(rvu->dev, "%s: ldata=0x%llx hash_key0=0x%llx hash_key2=0x%llx\n", __func__,
- ldata, hash_key[1], hash_key[0]);
- hash = rvu_npc_toeplitz_hash(&ldata, (u64 *)hash_key, 64, 95);
-
- hash &= table->mem_table.hash_mask;
- hash += table->mem_table.hash_offset;
- dev_dbg(rvu->dev, "%s: hash=%x\n", __func__, hash);
-
- return hash;
-}
-
-/**
- * rvu_npc_exact_alloc_mem_table_entry - find free entry in 4 way table.
- * @rvu: resource virtualization unit.
- * @way: Indicate way to table.
- * @index: Hash index to 4 way table.
- *
- * Searches 4 way table using hash index. Returns 0 on success.
- */
-static int rvu_npc_exact_alloc_mem_table_entry(struct rvu *rvu, u8 *way,
- u32 *index, unsigned int hash)
-{
- struct npc_exact_table *table;
- int depth, i;
-
- table = rvu->hw->table;
- depth = table->mem_table.depth;
-
- /* Check all the 4 ways for a free slot. */
- mutex_lock(&table->lock);
- for (i = 0; i < table->mem_table.ways; i++) {
- if (test_bit(hash + i * depth, table->mem_table.bmap))
- continue;
-
- set_bit(hash + i * depth, table->mem_table.bmap);
- mutex_unlock(&table->lock);
-
- dev_dbg(rvu->dev, "%s: mem table entry alloc success (way=%d index=%d)\n",
- __func__, i, hash);
-
- *way = i;
- *index = hash;
- return 0;
- }
- mutex_unlock(&table->lock);
-
- dev_dbg(rvu->dev, "%s: No space in 4 way exact way, weight=%u\n", __func__,
- bitmap_weight(table->mem_table.bmap, table->mem_table.depth));
- return -ENOSPC;
-}
-
-/**
- * rvu_npc_exact_free_id - Free seq id from bitmat.
- * @rvu: Resource virtualization unit.
- * @seq_id: Sequence identifier to be freed.
- */
-static void rvu_npc_exact_free_id(struct rvu *rvu, u32 seq_id)
-{
- struct npc_exact_table *table;
-
- table = rvu->hw->table;
- mutex_lock(&table->lock);
- clear_bit(seq_id, table->id_bmap);
- mutex_unlock(&table->lock);
- dev_dbg(rvu->dev, "%s: freed id %d\n", __func__, seq_id);
-}
-
-/**
- * rvu_npc_exact_alloc_id - Alloc seq id from bitmap.
- * @rvu: Resource virtualization unit.
- * @seq_id: Sequence identifier.
- */
-static bool rvu_npc_exact_alloc_id(struct rvu *rvu, u32 *seq_id)
-{
- struct npc_exact_table *table;
- u32 idx;
-
- table = rvu->hw->table;
-
- mutex_lock(&table->lock);
- idx = find_first_zero_bit(table->id_bmap, table->tot_ids);
- if (idx == table->tot_ids) {
- mutex_unlock(&table->lock);
- dev_err(rvu->dev, "%s: No space in id bitmap (%d)\n",
- __func__, bitmap_weight(table->id_bmap, table->tot_ids));
-
- return false;
- }
-
- /* Mark bit map to indicate that slot is used.*/
- set_bit(idx, table->id_bmap);
- mutex_unlock(&table->lock);
-
- *seq_id = idx;
- dev_dbg(rvu->dev, "%s: Allocated id (%d)\n", __func__, *seq_id);
-
- return true;
-}
-
-/**
- * rvu_npc_exact_alloc_cam_table_entry - find free slot in fully associative table.
- * @rvu: resource virtualization unit.
- * @index: Index to exact CAM table.
- */
-static int rvu_npc_exact_alloc_cam_table_entry(struct rvu *rvu, int *index)
-{
- struct npc_exact_table *table;
- u32 idx;
-
- table = rvu->hw->table;
-
- mutex_lock(&table->lock);
- idx = find_first_zero_bit(table->cam_table.bmap, table->cam_table.depth);
- if (idx == table->cam_table.depth) {
- mutex_unlock(&table->lock);
- dev_info(rvu->dev, "%s: No space in exact cam table, weight=%u\n", __func__,
- bitmap_weight(table->cam_table.bmap, table->cam_table.depth));
- return -ENOSPC;
- }
-
- /* Mark bit map to indicate that slot is used.*/
- set_bit(idx, table->cam_table.bmap);
- mutex_unlock(&table->lock);
-
- *index = idx;
- dev_dbg(rvu->dev, "%s: cam table entry alloc success (index=%d)\n",
- __func__, idx);
- return 0;
-}
-
-/**
- * rvu_exact_prepare_table_entry - Data for exact match table entry.
- * @rvu: Resource virtualization unit.
- * @enable: Enable/Disable entry
- * @ctype: Software defined channel type. Currently set as 0.
- * @chan: Channel number.
- * @mac_addr: Destination mac address.
- * returns mdata for exact match table.
- */
-static u64 rvu_exact_prepare_table_entry(struct rvu *rvu, bool enable,
- u8 ctype, u16 chan, u8 *mac_addr)
-
-{
- u64 ldata = rvu_npc_exact_mac2u64(mac_addr);
-
- /* Enable or disable */
- u64 mdata = FIELD_PREP(GENMASK_ULL(63, 63), !!enable);
-
- /* Set Ctype */
- mdata |= FIELD_PREP(GENMASK_ULL(61, 60), ctype);
-
- /* Set chan */
- mdata |= FIELD_PREP(GENMASK_ULL(59, 48), chan);
-
- /* MAC address */
- mdata |= FIELD_PREP(GENMASK_ULL(47, 0), ldata);
-
- return mdata;
-}
-
-/**
- * rvu_exact_config_secret_key - Configure secret key.
- * Returns mdata for exact match table.
- */
-static void rvu_exact_config_secret_key(struct rvu *rvu)
-{
- int blkaddr;
-
- blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
- rvu_write64(rvu, blkaddr, NPC_AF_INTFX_EXACT_SECRET0(NIX_INTF_RX),
- RVU_NPC_HASH_SECRET_KEY0);
-
- rvu_write64(rvu, blkaddr, NPC_AF_INTFX_EXACT_SECRET1(NIX_INTF_RX),
- RVU_NPC_HASH_SECRET_KEY1);
-
- rvu_write64(rvu, blkaddr, NPC_AF_INTFX_EXACT_SECRET2(NIX_INTF_RX),
- RVU_NPC_HASH_SECRET_KEY2);
-}
-
-/**
- * rvu_exact_config_search_key - Configure search key
- * Returns mdata for exact match table.
- */
-static void rvu_exact_config_search_key(struct rvu *rvu)
-{
- int blkaddr;
- u64 reg_val;
-
- blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
-
- /* HDR offset */
- reg_val = FIELD_PREP(GENMASK_ULL(39, 32), 0);
-
- /* BYTESM1, number of bytes - 1 */
- reg_val |= FIELD_PREP(GENMASK_ULL(18, 16), ETH_ALEN - 1);
-
- /* Enable LID and set LID to NPC_LID_LA */
- reg_val |= FIELD_PREP(GENMASK_ULL(11, 11), 1);
- reg_val |= FIELD_PREP(GENMASK_ULL(10, 8), NPC_LID_LA);
-
- /* Clear layer type based extraction */
-
- /* Disable LT_EN */
- reg_val |= FIELD_PREP(GENMASK_ULL(12, 12), 0);
-
- /* Set LTYPE_MATCH to 0 */
- reg_val |= FIELD_PREP(GENMASK_ULL(7, 4), 0);
-
- /* Set LTYPE_MASK to 0 */
- reg_val |= FIELD_PREP(GENMASK_ULL(3, 0), 0);
-
- rvu_write64(rvu, blkaddr, NPC_AF_INTFX_EXACT_CFG(NIX_INTF_RX), reg_val);
-}
-
-/**
- * rvu_exact_config_result_ctrl - Set exact table hash control
- * @rvu: Resource virtualization unit.
- * @depth: Depth of Exact match table.
- *
- * Sets mask and offset for hash for mem table.
- */
-static void rvu_exact_config_result_ctrl(struct rvu *rvu, uint32_t depth)
-{
- int blkaddr;
- u64 reg = 0;
-
- blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
-
- /* Set mask. Note that depth is a power of 2 */
- rvu->hw->table->mem_table.hash_mask = (depth - 1);
- reg |= FIELD_PREP(GENMASK_ULL(42, 32), (depth - 1));
-
- /* Set offset as 0 */
- rvu->hw->table->mem_table.hash_offset = 0;
- reg |= FIELD_PREP(GENMASK_ULL(10, 0), 0);
-
- /* Set reg for RX */
- rvu_write64(rvu, blkaddr, NPC_AF_INTFX_EXACT_RESULT_CTL(NIX_INTF_RX), reg);
- /* Store hash mask and offset for s/w algorithm */
-}
-
-/**
- * rvu_exact_config_table_mask - Set exact table mask.
- * @rvu: Resource virtualization unit.
- */
-static void rvu_exact_config_table_mask(struct rvu *rvu)
-{
- int blkaddr;
- u64 mask = 0;
-
- blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
-
- /* Don't use Ctype */
- mask |= FIELD_PREP(GENMASK_ULL(61, 60), 0);
-
- /* Set chan */
- mask |= GENMASK_ULL(59, 48);
-
- /* Full ldata */
- mask |= GENMASK_ULL(47, 0);
-
- /* Store mask for s/w hash calcualtion */
- rvu->hw->table->mem_table.mask = mask;
-
- /* Set mask for RX.*/
- rvu_write64(rvu, blkaddr, NPC_AF_INTFX_EXACT_MASK(NIX_INTF_RX), mask);
-}
-
-/**
- * rvu_npc_exact_get_max_entries - Get total number of entries in table.
- * @rvu: resource virtualization unit.
- */
-u32 rvu_npc_exact_get_max_entries(struct rvu *rvu)
-{
- struct npc_exact_table *table;
-
- table = rvu->hw->table;
- return table->tot_ids;
-}
-
-/**
- * rvu_npc_exact_has_match_table - Checks support for exact match.
- * @rvu: resource virtualization unit.
- *
- */
-bool rvu_npc_exact_has_match_table(struct rvu *rvu)
-{
- return rvu->hw->cap.npc_exact_match_enabled;
-}
-
-/**
- * __rvu_npc_exact_find_entry_by_seq_id - find entry by id
- * @rvu: resource virtualization unit.
- * @seq_id: Sequence identifier.
- *
- * Caller should acquire the lock.
- */
-static struct npc_exact_table_entry *
-__rvu_npc_exact_find_entry_by_seq_id(struct rvu *rvu, u32 seq_id)
-{
- struct npc_exact_table *table = rvu->hw->table;
- struct npc_exact_table_entry *entry = NULL;
- struct list_head *lhead;
-
- lhead = &table->lhead_gbl;
-
- /* traverse to find the matching entry */
- list_for_each_entry(entry, lhead, glist) {
- if (entry->seq_id != seq_id)
- continue;
-
- return entry;
- }
-
- return NULL;
-}
-
-/**
- * rvu_npc_exact_add_to_list - Add entry to list
- * @rvu: resource virtualization unit.
- * @opc_type: OPCODE to select MEM/CAM table.
- * @ways: MEM table ways.
- * @index: Index in MEM/CAM table.
- * @cgx_id: CGX identifier.
- * @lamc_id: LMAC identifier.
- * @mac_addr: MAC address.
- * @chan: Channel number.
- * @ctype: Channel Type.
- * @seq_id: Sequence identifier
- * @cmd: True if function is called by ethtool cmd
- * @mcam_idx: NPC mcam index of DMAC entry in NPC mcam.
- * @pcifunc: pci function
- */
-static int rvu_npc_exact_add_to_list(struct rvu *rvu, enum npc_exact_opc_type opc_type, u8 ways,
- u32 index, u8 cgx_id, u8 lmac_id, u8 *mac_addr, u16 chan,
- u8 ctype, u32 *seq_id, bool cmd, u32 mcam_idx, u16 pcifunc)
-{
- struct npc_exact_table_entry *entry, *tmp, *iter;
- struct npc_exact_table *table = rvu->hw->table;
- struct list_head *lhead, *pprev;
-
- WARN_ON(ways >= NPC_EXACT_TBL_MAX_WAYS);
-
- if (!rvu_npc_exact_alloc_id(rvu, seq_id)) {
- dev_err(rvu->dev, "%s: Generate seq id failed\n", __func__);
- return -EFAULT;
- }
-
- entry = kmalloc(sizeof(*entry), GFP_KERNEL);
- if (!entry) {
- rvu_npc_exact_free_id(rvu, *seq_id);
- dev_err(rvu->dev, "%s: Memory allocation failed\n", __func__);
- return -ENOMEM;
- }
-
- mutex_lock(&table->lock);
- switch (opc_type) {
- case NPC_EXACT_OPC_CAM:
- lhead = &table->lhead_cam_tbl_entry;
- table->cam_tbl_entry_cnt++;
- break;
-
- case NPC_EXACT_OPC_MEM:
- lhead = &table->lhead_mem_tbl_entry[ways];
- table->mem_tbl_entry_cnt++;
- break;
-
- default:
- mutex_unlock(&table->lock);
- kfree(entry);
- rvu_npc_exact_free_id(rvu, *seq_id);
-
- dev_err(rvu->dev, "%s: Unknown opc type%d\n", __func__, opc_type);
- return -EINVAL;
- }
-
- /* Add to global list */
- INIT_LIST_HEAD(&entry->glist);
- list_add_tail(&entry->glist, &table->lhead_gbl);
- INIT_LIST_HEAD(&entry->list);
- entry->index = index;
- entry->ways = ways;
- entry->opc_type = opc_type;
-
- entry->pcifunc = pcifunc;
-
- ether_addr_copy(entry->mac, mac_addr);
- entry->chan = chan;
- entry->ctype = ctype;
- entry->cgx_id = cgx_id;
- entry->lmac_id = lmac_id;
-
- entry->seq_id = *seq_id;
-
- entry->mcam_idx = mcam_idx;
- entry->cmd = cmd;
-
- pprev = lhead;
-
- /* Insert entry in ascending order of index */
- list_for_each_entry_safe(iter, tmp, lhead, list) {
- if (index < iter->index)
- break;
-
- pprev = &iter->list;
- }
-
- /* Add to each table list */
- list_add(&entry->list, pprev);
- mutex_unlock(&table->lock);
- return 0;
-}
-
-/**
- * rvu_npc_exact_mem_table_write - Wrapper for register write
- * @rvu: resource virtualization unit.
- * @blkaddr: Block address
- * @ways: ways for MEM table.
- * @index: Index in MEM
- * @mdata: Meta data to be written to register.
- */
-static void rvu_npc_exact_mem_table_write(struct rvu *rvu, int blkaddr, u8 ways,
- u32 index, u64 mdata)
-{
- rvu_write64(rvu, blkaddr, NPC_AF_EXACT_MEM_ENTRY(ways, index), mdata);
-}
-
-/**
- * rvu_npc_exact_cam_table_write - Wrapper for register write
- * @rvu: resource virtualization unit.
- * @blkaddr: Block address
- * @index: Index in MEM
- * @mdata: Meta data to be written to register.
- */
-static void rvu_npc_exact_cam_table_write(struct rvu *rvu, int blkaddr,
- u32 index, u64 mdata)
-{
- rvu_write64(rvu, blkaddr, NPC_AF_EXACT_CAM_ENTRY(index), mdata);
-}
-
-/**
- * rvu_npc_exact_dealloc_table_entry - dealloc table entry
- * @rvu: resource virtualization unit.
- * @opc_type: OPCODE for selection of table(MEM or CAM)
- * @ways: ways if opc_type is MEM table.
- * @index: Index of MEM or CAM table.
- */
-static int rvu_npc_exact_dealloc_table_entry(struct rvu *rvu, enum npc_exact_opc_type opc_type,
- u8 ways, u32 index)
-{
- int blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
- struct npc_exact_table *table;
- u8 null_dmac[6] = { 0 };
- int depth;
-
- /* Prepare entry with all fields set to zero */
- u64 null_mdata = rvu_exact_prepare_table_entry(rvu, false, 0, 0, null_dmac);
-
- table = rvu->hw->table;
- depth = table->mem_table.depth;
-
- mutex_lock(&table->lock);
-
- switch (opc_type) {
- case NPC_EXACT_OPC_CAM:
-
- /* Check whether entry is used already */
- if (!test_bit(index, table->cam_table.bmap)) {
- mutex_unlock(&table->lock);
- dev_err(rvu->dev, "%s: Trying to free an unused entry ways=%d index=%d\n",
- __func__, ways, index);
- return -EINVAL;
- }
-
- rvu_npc_exact_cam_table_write(rvu, blkaddr, index, null_mdata);
- clear_bit(index, table->cam_table.bmap);
- break;
-
- case NPC_EXACT_OPC_MEM:
-
- /* Check whether entry is used already */
- if (!test_bit(index + ways * depth, table->mem_table.bmap)) {
- mutex_unlock(&table->lock);
- dev_err(rvu->dev, "%s: Trying to free an unused entry index=%d\n",
- __func__, index);
- return -EINVAL;
- }
-
- rvu_npc_exact_mem_table_write(rvu, blkaddr, ways, index, null_mdata);
- clear_bit(index + ways * depth, table->mem_table.bmap);
- break;
-
- default:
- mutex_unlock(&table->lock);
- dev_err(rvu->dev, "%s: invalid opc type %d", __func__, opc_type);
- return -ENOSPC;
- }
-
- mutex_unlock(&table->lock);
-
- dev_dbg(rvu->dev, "%s: Successfully deleted entry (index=%d, ways=%d opc_type=%d\n",
- __func__, index, ways, opc_type);
-
- return 0;
-}
-
-/**
- * rvu_npc_exact_alloc_table_entry - Allociate an entry
- * @rvu: resource virtualization unit.
- * @mac: MAC address.
- * @chan: Channel number.
- * @ctype: Channel Type.
- * @index: Index of MEM table or CAM table.
- * @ways: Ways. Only valid for MEM table.
- * @opc_type: OPCODE to select table (MEM or CAM)
- *
- * Try allocating a slot from MEM table. If all 4 ways
- * slot are full for a hash index, check availability in
- * 32-entry CAM table for allocation.
- */
-static int rvu_npc_exact_alloc_table_entry(struct rvu *rvu, char *mac, u16 chan, u8 ctype,
- u32 *index, u8 *ways, enum npc_exact_opc_type *opc_type)
-{
- struct npc_exact_table *table;
- unsigned int hash;
- int err;
-
- table = rvu->hw->table;
-
- /* Check in 4-ways mem entry for free slote */
- hash = rvu_exact_calculate_hash(rvu, chan, ctype, mac, table->mem_table.mask,
- table->mem_table.depth);
- err = rvu_npc_exact_alloc_mem_table_entry(rvu, ways, index, hash);
- if (!err) {
- *opc_type = NPC_EXACT_OPC_MEM;
- dev_dbg(rvu->dev, "%s: inserted in 4 ways hash table ways=%d, index=%d\n",
- __func__, *ways, *index);
- return 0;
- }
-
- dev_dbg(rvu->dev, "%s: failed to insert in 4 ways hash table\n", __func__);
-
- /* wayss is 0 for cam table */
- *ways = 0;
- err = rvu_npc_exact_alloc_cam_table_entry(rvu, index);
- if (!err) {
- *opc_type = NPC_EXACT_OPC_CAM;
- dev_dbg(rvu->dev, "%s: inserted in fully associative hash table index=%u\n",
- __func__, *index);
- return 0;
- }
-
- dev_err(rvu->dev, "%s: failed to insert in fully associative hash table\n", __func__);
- return -ENOSPC;
-}
-
-/**
- * rvu_npc_exact_save_drop_rule_chan_and_mask - Save drop rules info in data base.
- * @rvu: resource virtualization unit.
- * @drop_mcam_idx: Drop rule index in NPC mcam.
- * @chan_val: Channel value.
- * @chan_mask: Channel Mask.
- * @pcifunc: pcifunc of interface.
- */
-static bool rvu_npc_exact_save_drop_rule_chan_and_mask(struct rvu *rvu, int drop_mcam_idx,
- u64 chan_val, u64 chan_mask, u16 pcifunc)
-{
- struct npc_exact_table *table;
- int i;
-
- table = rvu->hw->table;
-
- for (i = 0; i < NPC_MCAM_DROP_RULE_MAX; i++) {
- if (!table->drop_rule_map[i].valid)
- break;
-
- if (table->drop_rule_map[i].chan_val != (u16)chan_val)
- continue;
-
- if (table->drop_rule_map[i].chan_mask != (u16)chan_mask)
- continue;
-
- return false;
- }
-
- if (i == NPC_MCAM_DROP_RULE_MAX)
- return false;
-
- table->drop_rule_map[i].drop_rule_idx = drop_mcam_idx;
- table->drop_rule_map[i].chan_val = (u16)chan_val;
- table->drop_rule_map[i].chan_mask = (u16)chan_mask;
- table->drop_rule_map[i].pcifunc = pcifunc;
- table->drop_rule_map[i].valid = true;
- return true;
-}
-
-/**
- * rvu_npc_exact_calc_drop_rule_chan_and_mask - Calculate Channel number and mask.
- * @rvu: resource virtualization unit.
- * @intf_type: Interface type (SDK, LBK or CGX)
- * @cgx_id: CGX identifier.
- * @lmac_id: LAMC identifier.
- * @val: Channel number.
- * @mask: Channel mask.
- */
-static bool rvu_npc_exact_calc_drop_rule_chan_and_mask(struct rvu *rvu, u8 intf_type,
- u8 cgx_id, u8 lmac_id,
- u64 *val, u64 *mask)
-{
- u16 chan_val, chan_mask;
-
- /* No support for SDP and LBK */
- if (intf_type != NIX_INTF_TYPE_CGX)
- return false;
-
- chan_val = rvu_nix_chan_cgx(rvu, cgx_id, lmac_id, 0);
- chan_mask = 0xfff;
-
- if (val)
- *val = chan_val;
-
- if (mask)
- *mask = chan_mask;
-
- return true;
-}
-
-/**
- * rvu_npc_exact_drop_rule_to_pcifunc - Retrieve pcifunc
- * @rvu: resource virtualization unit.
- * @drop_rule_idx: Drop rule index in NPC mcam.
- *
- * Debugfs (exact_drop_cnt) entry displays pcifunc for interface
- * by retrieving the pcifunc value from data base.
- */
-u16 rvu_npc_exact_drop_rule_to_pcifunc(struct rvu *rvu, u32 drop_rule_idx)
-{
- struct npc_exact_table *table;
- int i;
-
- table = rvu->hw->table;
-
- for (i = 0; i < NPC_MCAM_DROP_RULE_MAX; i++) {
- if (!table->drop_rule_map[i].valid)
- break;
-
- if (table->drop_rule_map[i].drop_rule_idx != drop_rule_idx)
- continue;
-
- return table->drop_rule_map[i].pcifunc;
- }
-
- dev_err(rvu->dev, "%s: drop mcam rule index (%d) >= NPC_MCAM_DROP_RULE_MAX\n",
- __func__, drop_rule_idx);
- return -1;
-}
-
-/**
- * rvu_npc_exact_get_drop_rule_info - Get drop rule information.
- * @rvu: resource virtualization unit.
- * @intf_type: Interface type (CGX, SDP or LBK)
- * @cgx_id: CGX identifier.
- * @lmac_id: LMAC identifier.
- * @drop_mcam_idx: NPC mcam drop rule index.
- * @val: Channel value.
- * @mask: Channel mask.
- * @pcifunc: pcifunc of interface corresponding to the drop rule.
- */
-static bool rvu_npc_exact_get_drop_rule_info(struct rvu *rvu, u8 intf_type, u8 cgx_id,
- u8 lmac_id, u32 *drop_mcam_idx, u64 *val,
- u64 *mask, u16 *pcifunc)
-{
- struct npc_exact_table *table;
- u64 chan_val, chan_mask;
- bool rc;
- int i;
-
- table = rvu->hw->table;
-
- if (intf_type != NIX_INTF_TYPE_CGX) {
- dev_err(rvu->dev, "%s: No drop rule for LBK/SDP mode\n", __func__);
- return false;
- }
-
- rc = rvu_npc_exact_calc_drop_rule_chan_and_mask(rvu, intf_type, cgx_id,
- lmac_id, &chan_val, &chan_mask);
-
- for (i = 0; i < NPC_MCAM_DROP_RULE_MAX; i++) {
- if (!table->drop_rule_map[i].valid)
- break;
-
- if (table->drop_rule_map[i].chan_val != (u16)chan_val)
- continue;
-
- if (val)
- *val = table->drop_rule_map[i].chan_val;
- if (mask)
- *mask = table->drop_rule_map[i].chan_mask;
- if (pcifunc)
- *pcifunc = table->drop_rule_map[i].pcifunc;
-
- *drop_mcam_idx = i;
- return true;
- }
-
- if (i == NPC_MCAM_DROP_RULE_MAX) {
- dev_err(rvu->dev, "%s: drop mcam rule index (%d) >= NPC_MCAM_DROP_RULE_MAX\n",
- __func__, *drop_mcam_idx);
- return false;
- }
-
- dev_err(rvu->dev, "%s: Could not retrieve for cgx=%d, lmac=%d\n",
- __func__, cgx_id, lmac_id);
- return false;
-}
-
-/**
- * __rvu_npc_exact_cmd_rules_cnt_update - Update number dmac rules against a drop rule.
- * @rvu: resource virtualization unit.
- * @drop_mcam_idx: NPC mcam drop rule index.
- * @val: +1 or -1.
- * @enable_or_disable_cam: If no exact match rules against a drop rule, disable it.
- *
- * when first exact match entry against a drop rule is added, enable_or_disable_cam
- * is set to true. When last exact match entry against a drop rule is deleted,
- * enable_or_disable_cam is set to true.
- */
-static u16 __rvu_npc_exact_cmd_rules_cnt_update(struct rvu *rvu, int drop_mcam_idx,
- int val, bool *enable_or_disable_cam)
-{
- struct npc_exact_table *table;
- u16 *cnt, old_cnt;
- bool promisc;
-
- table = rvu->hw->table;
- promisc = table->promisc_mode[drop_mcam_idx];
-
- cnt = &table->cnt_cmd_rules[drop_mcam_idx];
- old_cnt = *cnt;
-
- *cnt += val;
-
- if (!enable_or_disable_cam)
- goto done;
-
- *enable_or_disable_cam = false;
-
- if (promisc)
- goto done;
-
- /* If all rules are deleted and not already in promisc mode; disable cam */
- if (!*cnt && val < 0) {
- *enable_or_disable_cam = true;
- goto done;
- }
-
- /* If rule got added and not already in promisc mode; enable cam */
- if (!old_cnt && val > 0) {
- *enable_or_disable_cam = true;
- goto done;
- }
-
-done:
- return *cnt;
-}
-
-/**
- * rvu_npc_exact_del_table_entry_by_id - Delete and free table entry.
- * @rvu: resource virtualization unit.
- * @seq_id: Sequence identifier of the entry.
- *
- * Deletes entry from linked lists and free up slot in HW MEM or CAM
- * table.
- */
-static int rvu_npc_exact_del_table_entry_by_id(struct rvu *rvu, u32 seq_id)
-{
- struct npc_exact_table_entry *entry = NULL;
- struct npc_exact_table *table;
- u32 drop_mcam_idx;
- bool disable_cam;
- int *cnt;
-
- table = rvu->hw->table;
-
- mutex_lock(&table->lock);
-
- /* Lookup for entry which needs to be updated */
- entry = __rvu_npc_exact_find_entry_by_seq_id(rvu, seq_id);
- if (!entry) {
- dev_dbg(rvu->dev, "%s: failed to find entry for id=0x%x\n", __func__, seq_id);
- mutex_unlock(&table->lock);
- return -ENODATA;
- }
-
- cnt = (entry->opc_type == NPC_EXACT_OPC_CAM) ? &table->cam_tbl_entry_cnt :
- &table->mem_tbl_entry_cnt;
-
- /* delete from lists */
- list_del_init(&entry->list);
- list_del_init(&entry->glist);
-
- (*cnt)--;
-
- rvu_npc_exact_get_drop_rule_info(rvu, NIX_INTF_TYPE_CGX, entry->cgx_id, entry->lmac_id,
- &drop_mcam_idx, NULL, NULL, NULL);
-
- if (entry->cmd)
- __rvu_npc_exact_cmd_rules_cnt_update(rvu, drop_mcam_idx, -1, &disable_cam);
-
- /* No dmac filter rules; disable drop on hit rule */
- if (disable_cam) {
- rvu_npc_enable_mcam_by_entry_index(rvu, drop_mcam_idx, NIX_INTF_RX, false);
- dev_dbg(rvu->dev, "%s: Disabling mcam idx %d\n",
- __func__, drop_mcam_idx);
- }
-
- mutex_unlock(&table->lock);
-
- rvu_npc_exact_dealloc_table_entry(rvu, entry->opc_type, entry->ways, entry->index);
-
- rvu_npc_exact_free_id(rvu, seq_id);
-
- dev_dbg(rvu->dev, "%s: delete entry success for id=0x%x, mca=%pM\n",
- __func__, seq_id, entry->mac);
- kfree(entry);
-
- return 0;
-}
-
-/**
- * rvu_npc_exact_add_table_entry - Adds a table entry
- * @rvu: resource virtualization unit.
- * @cgx_id: cgx identifier.
- * @lmac_id: lmac identifier.
- * @mac: MAC address.
- * @chan: Channel number.
- * @ctype: Channel Type.
- * @seq_id: Sequence number.
- * @cmd: Whether it is invoked by ethtool cmd.
- * @mcam_idx: NPC mcam index corresponding to MAC
- * @pcifunc: PCI func.
- *
- * Creates a new exact match table entry in either CAM or
- * MEM table.
- */
-static int rvu_npc_exact_add_table_entry(struct rvu *rvu, u8 cgx_id, u8 lmac_id, u8 *mac,
- u16 chan, u8 ctype, u32 *seq_id, bool cmd,
- u32 mcam_idx, u16 pcifunc)
-{
- int blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
- enum npc_exact_opc_type opc_type;
- struct npc_exact_table *table;
- u32 drop_mcam_idx;
- bool enable_cam;
- u32 index;
- u64 mdata;
- int err;
- u8 ways;
-
- table = rvu->hw->table;
-
- ctype = 0;
-
- err = rvu_npc_exact_alloc_table_entry(rvu, mac, chan, ctype, &index, &ways, &opc_type);
- if (err) {
- dev_err(rvu->dev, "%s: Could not alloc in exact match table\n", __func__);
- return err;
- }
-
- /* Write mdata to table */
- mdata = rvu_exact_prepare_table_entry(rvu, true, ctype, chan, mac);
-
- if (opc_type == NPC_EXACT_OPC_CAM)
- rvu_npc_exact_cam_table_write(rvu, blkaddr, index, mdata);
- else
- rvu_npc_exact_mem_table_write(rvu, blkaddr, ways, index, mdata);
-
- /* Insert entry to linked list */
- err = rvu_npc_exact_add_to_list(rvu, opc_type, ways, index, cgx_id, lmac_id,
- mac, chan, ctype, seq_id, cmd, mcam_idx, pcifunc);
- if (err) {
- rvu_npc_exact_dealloc_table_entry(rvu, opc_type, ways, index);
- dev_err(rvu->dev, "%s: could not add to exact match table\n", __func__);
- return err;
- }
-
- rvu_npc_exact_get_drop_rule_info(rvu, NIX_INTF_TYPE_CGX, cgx_id, lmac_id,
- &drop_mcam_idx, NULL, NULL, NULL);
- if (cmd)
- __rvu_npc_exact_cmd_rules_cnt_update(rvu, drop_mcam_idx, 1, &enable_cam);
-
- /* First command rule; enable drop on hit rule */
- if (enable_cam) {
- rvu_npc_enable_mcam_by_entry_index(rvu, drop_mcam_idx, NIX_INTF_RX, true);
- dev_dbg(rvu->dev, "%s: Enabling mcam idx %d\n",
- __func__, drop_mcam_idx);
- }
-
- dev_dbg(rvu->dev,
- "%s: Successfully added entry (index=%d, dmac=%pM, ways=%d opc_type=%d\n",
- __func__, index, mac, ways, opc_type);
-
- return 0;
-}
-
-/**
- * rvu_npc_exact_update_table_entry - Update exact match table.
- * @rvu: resource virtualization unit.
- * @cgx_id: CGX identifier.
- * @lamc_id: LMAC identifier.
- * @old_mac: Existing MAC address entry.
- * @new_mac: New MAC address entry.
- * @seq_id: Sequence identifier of the entry.
- *
- * Updates MAC address of an entry. If entry is in MEM table, new
- * hash value may not match with old one.
- */
-static int rvu_npc_exact_update_table_entry(struct rvu *rvu, u8 cgx_id, u8 lmac_id,
- u8 *old_mac, u8 *new_mac, u32 *seq_id)
-{
- int blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
- struct npc_exact_table_entry *entry;
- struct npc_exact_table *table;
- u32 hash_index;
- u64 mdata;
-
- table = rvu->hw->table;
-
- mutex_lock(&table->lock);
-
- /* Lookup for entry which needs to be updated */
- entry = __rvu_npc_exact_find_entry_by_seq_id(rvu, *seq_id);
- if (!entry) {
- mutex_unlock(&table->lock);
- dev_dbg(rvu->dev,
- "%s: failed to find entry for cgx_id=%d lmac_id=%d old_mac=%pM\n",
- __func__, cgx_id, lmac_id, old_mac);
- return -ENODATA;
- }
-
- /* If entry is in mem table and new hash index is different than old
- * hash index, we cannot update the entry. Fail in these scenarios.
- */
- if (entry->opc_type == NPC_EXACT_OPC_MEM) {
- hash_index = rvu_exact_calculate_hash(rvu, entry->chan, entry->ctype,
- new_mac, table->mem_table.mask,
- table->mem_table.depth);
- if (hash_index != entry->index) {
- dev_dbg(rvu->dev,
- "%s: Update failed due to index mismatch(new=0x%x, old=%x)\n",
- __func__, hash_index, entry->index);
- mutex_unlock(&table->lock);
- return -EINVAL;
- }
- }
-
- mdata = rvu_exact_prepare_table_entry(rvu, true, entry->ctype, entry->chan, new_mac);
-
- if (entry->opc_type == NPC_EXACT_OPC_MEM)
- rvu_npc_exact_mem_table_write(rvu, blkaddr, entry->ways, entry->index, mdata);
- else
- rvu_npc_exact_cam_table_write(rvu, blkaddr, entry->index, mdata);
-
- /* Update entry fields */
- ether_addr_copy(entry->mac, new_mac);
- *seq_id = entry->seq_id;
-
- dev_dbg(rvu->dev,
- "%s: Successfully updated entry (index=%d, dmac=%pM, ways=%d opc_type=%d\n",
- __func__, hash_index, entry->mac, entry->ways, entry->opc_type);
-
- dev_dbg(rvu->dev, "%s: Successfully updated entry (old mac=%pM new_mac=%pM\n",
- __func__, old_mac, new_mac);
-
- mutex_unlock(&table->lock);
- return 0;
-}
-
-/**
- * rvu_npc_exact_promisc_disable - Disable promiscuous mode.
- * @rvu: resource virtualization unit.
- * @pcifunc: pcifunc
- *
- * Drop rule is against each PF. We dont support DMAC filter for
- * VF.
- */
-
-int rvu_npc_exact_promisc_disable(struct rvu *rvu, u16 pcifunc)
-{
- struct npc_exact_table *table;
- int pf = rvu_get_pf(pcifunc);
- u8 cgx_id, lmac_id;
- u32 drop_mcam_idx;
- bool *promisc;
- u32 cnt;
-
- table = rvu->hw->table;
-
- rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
- rvu_npc_exact_get_drop_rule_info(rvu, NIX_INTF_TYPE_CGX, cgx_id, lmac_id,
- &drop_mcam_idx, NULL, NULL, NULL);
-
- mutex_lock(&table->lock);
- promisc = &table->promisc_mode[drop_mcam_idx];
-
- if (!*promisc) {
- mutex_unlock(&table->lock);
- dev_dbg(rvu->dev, "%s: Err Already promisc mode disabled (cgx=%d lmac=%d)\n",
- __func__, cgx_id, lmac_id);
- return LMAC_AF_ERR_INVALID_PARAM;
- }
- *promisc = false;
- cnt = __rvu_npc_exact_cmd_rules_cnt_update(rvu, drop_mcam_idx, 0, NULL);
- mutex_unlock(&table->lock);
-
- /* If no dmac filter entries configured, disable drop rule */
- if (!cnt)
- rvu_npc_enable_mcam_by_entry_index(rvu, drop_mcam_idx, NIX_INTF_RX, false);
- else
- rvu_npc_enable_mcam_by_entry_index(rvu, drop_mcam_idx, NIX_INTF_RX, !*promisc);
-
- dev_dbg(rvu->dev, "%s: disabled promisc mode (cgx=%d lmac=%d, cnt=%d)\n",
- __func__, cgx_id, lmac_id, cnt);
- return 0;
-}
-
-/**
- * rvu_npc_exact_promisc_enable - Enable promiscuous mode.
- * @rvu: resource virtualization unit.
- * @pcifunc: pcifunc.
- */
-int rvu_npc_exact_promisc_enable(struct rvu *rvu, u16 pcifunc)
-{
- struct npc_exact_table *table;
- int pf = rvu_get_pf(pcifunc);
- u8 cgx_id, lmac_id;
- u32 drop_mcam_idx;
- bool *promisc;
- u32 cnt;
-
- table = rvu->hw->table;
-
- rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
- rvu_npc_exact_get_drop_rule_info(rvu, NIX_INTF_TYPE_CGX, cgx_id, lmac_id,
- &drop_mcam_idx, NULL, NULL, NULL);
-
- mutex_lock(&table->lock);
- promisc = &table->promisc_mode[drop_mcam_idx];
-
- if (*promisc) {
- mutex_unlock(&table->lock);
- dev_dbg(rvu->dev, "%s: Already in promisc mode (cgx=%d lmac=%d)\n",
- __func__, cgx_id, lmac_id);
- return LMAC_AF_ERR_INVALID_PARAM;
- }
- *promisc = true;
- cnt = __rvu_npc_exact_cmd_rules_cnt_update(rvu, drop_mcam_idx, 0, NULL);
- mutex_unlock(&table->lock);
-
- /* If no dmac filter entries configured, disable drop rule */
- if (!cnt)
- rvu_npc_enable_mcam_by_entry_index(rvu, drop_mcam_idx, NIX_INTF_RX, false);
- else
- rvu_npc_enable_mcam_by_entry_index(rvu, drop_mcam_idx, NIX_INTF_RX, !*promisc);
-
- dev_dbg(rvu->dev, "%s: Enabled promisc mode (cgx=%d lmac=%d cnt=%d)\n",
- __func__, cgx_id, lmac_id, cnt);
- return 0;
-}
-
-/**
- * rvu_npc_exact_mac_addr_reset - Delete PF mac address.
- * @rvu: resource virtualization unit.
- * @req: Reset request
- * @rsp: Reset response.
- */
-int rvu_npc_exact_mac_addr_reset(struct rvu *rvu, struct cgx_mac_addr_reset_req *req,
- struct msg_rsp *rsp)
-{
- int pf = rvu_get_pf(req->hdr.pcifunc);
- u32 seq_id = req->index;
- struct rvu_pfvf *pfvf;
- u8 cgx_id, lmac_id;
- int rc;
-
- rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
-
- pfvf = rvu_get_pfvf(rvu, req->hdr.pcifunc);
-
- rc = rvu_npc_exact_del_table_entry_by_id(rvu, seq_id);
- if (rc) {
- /* TODO: how to handle this error case ? */
- dev_err(rvu->dev, "%s MAC (%pM) del PF=%d failed\n", __func__, pfvf->mac_addr, pf);
- return 0;
- }
-
- dev_dbg(rvu->dev, "%s MAC (%pM) del PF=%d success (seq_id=%u)\n",
- __func__, pfvf->mac_addr, pf, seq_id);
- return 0;
-}
-
-/**
- * rvu_npc_exact_mac_addr_update - Update mac address field with new value.
- * @rvu: resource virtualization unit.
- * @req: Update request.
- * @rsp: Update response.
- */
-int rvu_npc_exact_mac_addr_update(struct rvu *rvu,
- struct cgx_mac_addr_update_req *req,
- struct cgx_mac_addr_update_rsp *rsp)
-{
- int pf = rvu_get_pf(req->hdr.pcifunc);
- struct npc_exact_table_entry *entry;
- struct npc_exact_table *table;
- struct rvu_pfvf *pfvf;
- u32 seq_id, mcam_idx;
- u8 old_mac[ETH_ALEN];
- u8 cgx_id, lmac_id;
- int rc;
-
- if (!is_cgx_config_permitted(rvu, req->hdr.pcifunc))
- return LMAC_AF_ERR_PERM_DENIED;
-
- dev_dbg(rvu->dev, "%s: Update request for seq_id=%d, mac=%pM\n",
- __func__, req->index, req->mac_addr);
-
- rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
-
- pfvf = rvu_get_pfvf(rvu, req->hdr.pcifunc);
-
- table = rvu->hw->table;
-
- mutex_lock(&table->lock);
-
- /* Lookup for entry which needs to be updated */
- entry = __rvu_npc_exact_find_entry_by_seq_id(rvu, req->index);
- if (!entry) {
- dev_err(rvu->dev, "%s: failed to find entry for id=0x%x\n", __func__, req->index);
- mutex_unlock(&table->lock);
- return LMAC_AF_ERR_EXACT_MATCH_TBL_LOOK_UP_FAILED;
- }
- ether_addr_copy(old_mac, entry->mac);
- seq_id = entry->seq_id;
- mcam_idx = entry->mcam_idx;
- mutex_unlock(&table->lock);
-
- rc = rvu_npc_exact_update_table_entry(rvu, cgx_id, lmac_id, old_mac,
- req->mac_addr, &seq_id);
- if (!rc) {
- rsp->index = seq_id;
- dev_dbg(rvu->dev, "%s mac:%pM (pfvf:%pM default:%pM) update to PF=%d success\n",
- __func__, req->mac_addr, pfvf->mac_addr, pfvf->default_mac, pf);
- ether_addr_copy(pfvf->mac_addr, req->mac_addr);
- return 0;
- }
-
- /* Try deleting and adding it again */
- rc = rvu_npc_exact_del_table_entry_by_id(rvu, req->index);
- if (rc) {
- /* This could be a new entry */
- dev_dbg(rvu->dev, "%s MAC (%pM) del PF=%d failed\n", __func__,
- pfvf->mac_addr, pf);
- }
-
- rc = rvu_npc_exact_add_table_entry(rvu, cgx_id, lmac_id, req->mac_addr,
- pfvf->rx_chan_base, 0, &seq_id, true,
- mcam_idx, req->hdr.pcifunc);
- if (rc) {
- dev_err(rvu->dev, "%s MAC (%pM) add PF=%d failed\n", __func__,
- req->mac_addr, pf);
- return LMAC_AF_ERR_EXACT_MATCH_TBL_ADD_FAILED;
- }
-
- rsp->index = seq_id;
- dev_dbg(rvu->dev,
- "%s MAC (new:%pM, old=%pM default:%pM) del and add to PF=%d success (seq_id=%u)\n",
- __func__, req->mac_addr, pfvf->mac_addr, pfvf->default_mac, pf, seq_id);
-
- ether_addr_copy(pfvf->mac_addr, req->mac_addr);
- return 0;
-}
-
-/**
- * rvu_npc_exact_mac_addr_add - Adds MAC address to exact match table.
- * @rvu: resource virtualization unit.
- * @req: Add request.
- * @rsp: Add response.
- */
-int rvu_npc_exact_mac_addr_add(struct rvu *rvu,
- struct cgx_mac_addr_add_req *req,
- struct cgx_mac_addr_add_rsp *rsp)
-{
- int pf = rvu_get_pf(req->hdr.pcifunc);
- struct rvu_pfvf *pfvf;
- u8 cgx_id, lmac_id;
- int rc = 0;
- u32 seq_id;
-
- rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
- pfvf = rvu_get_pfvf(rvu, req->hdr.pcifunc);
-
- rc = rvu_npc_exact_add_table_entry(rvu, cgx_id, lmac_id, req->mac_addr,
- pfvf->rx_chan_base, 0, &seq_id,
- true, -1, req->hdr.pcifunc);
-
- if (!rc) {
- rsp->index = seq_id;
- dev_dbg(rvu->dev, "%s MAC (%pM) add to PF=%d success (seq_id=%u)\n",
- __func__, req->mac_addr, pf, seq_id);
- return 0;
- }
-
- dev_err(rvu->dev, "%s MAC (%pM) add to PF=%d failed\n", __func__,
- req->mac_addr, pf);
- return LMAC_AF_ERR_EXACT_MATCH_TBL_ADD_FAILED;
-}
-
-/**
- * rvu_npc_exact_mac_addr_del - Delete DMAC filter
- * @rvu: resource virtualization unit.
- * @req: Delete request.
- * @rsp: Delete response.
- */
-int rvu_npc_exact_mac_addr_del(struct rvu *rvu,
- struct cgx_mac_addr_del_req *req,
- struct msg_rsp *rsp)
-{
- int pf = rvu_get_pf(req->hdr.pcifunc);
- int rc;
-
- rc = rvu_npc_exact_del_table_entry_by_id(rvu, req->index);
- if (!rc) {
- dev_dbg(rvu->dev, "%s del to PF=%d success (seq_id=%u)\n",
- __func__, pf, req->index);
- return 0;
- }
-
- dev_err(rvu->dev, "%s del to PF=%d failed (seq_id=%u)\n",
- __func__, pf, req->index);
- return LMAC_AF_ERR_EXACT_MATCH_TBL_DEL_FAILED;
-}
-
-/**
- * rvu_npc_exact_mac_addr_set - Add PF mac address to dmac filter.
- * @rvu: resource virtualization unit.
- * @req: Set request.
- * @rsp: Set response.
- */
-int rvu_npc_exact_mac_addr_set(struct rvu *rvu, struct cgx_mac_addr_set_or_get *req,
- struct cgx_mac_addr_set_or_get *rsp)
-{
- int pf = rvu_get_pf(req->hdr.pcifunc);
- u32 seq_id = req->index;
- struct rvu_pfvf *pfvf;
- u8 cgx_id, lmac_id;
- u32 mcam_idx = -1;
- int rc, nixlf;
-
- rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
-
- pfvf = &rvu->pf[pf];
-
- /* If table does not have an entry; both update entry and del table entry API
- * below fails. Those are not failure conditions.
- */
- rc = rvu_npc_exact_update_table_entry(rvu, cgx_id, lmac_id, pfvf->mac_addr,
- req->mac_addr, &seq_id);
- if (!rc) {
- rsp->index = seq_id;
- ether_addr_copy(pfvf->mac_addr, req->mac_addr);
- ether_addr_copy(rsp->mac_addr, req->mac_addr);
- dev_dbg(rvu->dev, "%s MAC (%pM) update to PF=%d success\n",
- __func__, req->mac_addr, pf);
- return 0;
- }
-
- /* Try deleting and adding it again */
- rc = rvu_npc_exact_del_table_entry_by_id(rvu, req->index);
- if (rc) {
- dev_dbg(rvu->dev, "%s MAC (%pM) del PF=%d failed\n",
- __func__, pfvf->mac_addr, pf);
- }
-
- /* find mcam entry if exist */
- rc = nix_get_nixlf(rvu, req->hdr.pcifunc, &nixlf, NULL);
- if (!rc) {
- mcam_idx = npc_get_nixlf_mcam_index(&rvu->hw->mcam, req->hdr.pcifunc,
- nixlf, NIXLF_UCAST_ENTRY);
- }
-
- rc = rvu_npc_exact_add_table_entry(rvu, cgx_id, lmac_id, req->mac_addr,
- pfvf->rx_chan_base, 0, &seq_id,
- true, mcam_idx, req->hdr.pcifunc);
- if (rc) {
- dev_err(rvu->dev, "%s MAC (%pM) add PF=%d failed\n",
- __func__, req->mac_addr, pf);
- return LMAC_AF_ERR_EXACT_MATCH_TBL_ADD_FAILED;
- }
-
- rsp->index = seq_id;
- ether_addr_copy(rsp->mac_addr, req->mac_addr);
- ether_addr_copy(pfvf->mac_addr, req->mac_addr);
- dev_dbg(rvu->dev,
- "%s MAC (%pM) del and add to PF=%d success (seq_id=%u)\n",
- __func__, req->mac_addr, pf, seq_id);
- return 0;
-}
-
-/**
- * rvu_npc_exact_can_disable_feature - Check if feature can be disabled.
- * @rvu: resource virtualization unit.
- */
-bool rvu_npc_exact_can_disable_feature(struct rvu *rvu)
-{
- struct npc_exact_table *table = rvu->hw->table;
- bool empty;
-
- if (!rvu->hw->cap.npc_exact_match_enabled)
- return false;
-
- mutex_lock(&table->lock);
- empty = list_empty(&table->lhead_gbl);
- mutex_unlock(&table->lock);
-
- return empty;
-}
-
-/**
- * rvu_npc_exact_disable_feature - Disable feature.
- * @rvu: resource virtualization unit.
- */
-void rvu_npc_exact_disable_feature(struct rvu *rvu)
-{
- rvu->hw->cap.npc_exact_match_enabled = false;
-}
-
-/**
- * rvu_npc_exact_reset - Delete and free all entry which match pcifunc.
- * @rvu: resource virtualization unit.
- * @pcifunc: PCI func to match.
- */
-void rvu_npc_exact_reset(struct rvu *rvu, u16 pcifunc)
-{
- struct npc_exact_table *table = rvu->hw->table;
- struct npc_exact_table_entry *tmp, *iter;
- u32 seq_id;
-
- mutex_lock(&table->lock);
- list_for_each_entry_safe(iter, tmp, &table->lhead_gbl, glist) {
- if (pcifunc != iter->pcifunc)
- continue;
-
- seq_id = iter->seq_id;
- dev_dbg(rvu->dev, "%s: resetting pcifun=%d seq_id=%u\n", __func__,
- pcifunc, seq_id);
-
- mutex_unlock(&table->lock);
- rvu_npc_exact_del_table_entry_by_id(rvu, seq_id);
- mutex_lock(&table->lock);
- }
- mutex_unlock(&table->lock);
-}
-
-/**
- * rvu_npc_exact_init - initialize exact match table
- * @rvu: resource virtualization unit.
- *
- * Initialize HW and SW resources to manage 4way-2K table and fully
- u8 cgx_id, lmac_id;
- * associative 32-entry mcam table.
- */
-int rvu_npc_exact_init(struct rvu *rvu)
-{
- u64 bcast_mcast_val, bcast_mcast_mask;
- struct npc_exact_table *table;
- u64 exact_val, exact_mask;
- u64 chan_val, chan_mask;
- u8 cgx_id, lmac_id;
- u32 *drop_mcam_idx;
- u16 max_lmac_cnt;
- u64 npc_const3;
- int table_size;
- int blkaddr;
- u16 pcifunc;
- int err, i;
- u64 cfg;
- bool rc;
-
- /* Read NPC_AF_CONST3 and check for have exact
- * match functionality is present
- */
- blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
- if (blkaddr < 0) {
- dev_err(rvu->dev, "%s: NPC block not implemented\n", __func__);
- return -EINVAL;
- }
-
- /* Check exact match feature is supported */
- npc_const3 = rvu_read64(rvu, blkaddr, NPC_AF_CONST3);
- if (!(npc_const3 & BIT_ULL(62))) {
- dev_info(rvu->dev, "%s: No support for exact match support\n",
- __func__);
- return 0;
- }
-
- /* Check if kex profile has enabled EXACT match nibble */
- cfg = rvu_read64(rvu, blkaddr, NPC_AF_INTFX_KEX_CFG(NIX_INTF_RX));
- if (!(cfg & NPC_EXACT_NIBBLE_HIT)) {
- dev_info(rvu->dev, "%s: NPC exact match nibble not enabled in KEX profile\n",
- __func__);
- return 0;
- }
-
- /* Set capability to true */
- rvu->hw->cap.npc_exact_match_enabled = true;
-
- table = kmalloc(sizeof(*table), GFP_KERNEL);
- if (!table)
- return -ENOMEM;
-
- dev_dbg(rvu->dev, "%s: Memory allocation for table success\n", __func__);
- memset(table, 0, sizeof(*table));
- rvu->hw->table = table;
-
- /* Read table size, ways and depth */
- table->mem_table.depth = FIELD_GET(GENMASK_ULL(31, 24), npc_const3);
- table->mem_table.ways = FIELD_GET(GENMASK_ULL(19, 16), npc_const3);
- table->cam_table.depth = FIELD_GET(GENMASK_ULL(15, 0), npc_const3);
-
- dev_dbg(rvu->dev, "%s: NPC exact match 4way_2k table(ways=%d, depth=%d)\n",
- __func__, table->mem_table.ways, table->cam_table.depth);
-
- /* Check if depth of table is not a sequre of 2
- * TODO: why _builtin_popcount() is not working ?
- */
- if ((table->mem_table.depth & (table->mem_table.depth - 1)) != 0) {
- dev_err(rvu->dev,
- "%s: NPC exact match 4way_2k table depth(%d) is not square of 2\n",
- __func__, table->mem_table.depth);
- return -EINVAL;
- }
-
- table_size = table->mem_table.depth * table->mem_table.ways;
-
- /* Allocate bitmap for 4way 2K table */
- table->mem_table.bmap = devm_kcalloc(rvu->dev, BITS_TO_LONGS(table_size),
- sizeof(long), GFP_KERNEL);
- if (!table->mem_table.bmap)
- return -ENOMEM;
-
- dev_dbg(rvu->dev, "%s: Allocated bitmap for 4way 2K entry table\n", __func__);
-
- /* Allocate bitmap for 32 entry mcam */
- table->cam_table.bmap = devm_kcalloc(rvu->dev, 1, sizeof(long), GFP_KERNEL);
-
- if (!table->cam_table.bmap)
- return -ENOMEM;
-
- dev_dbg(rvu->dev, "%s: Allocated bitmap for 32 entry cam\n", __func__);
-
- table->tot_ids = (table->mem_table.depth * table->mem_table.ways) + table->cam_table.depth;
- table->id_bmap = devm_kcalloc(rvu->dev, BITS_TO_LONGS(table->tot_ids),
- table->tot_ids, GFP_KERNEL);
-
- if (!table->id_bmap)
- return -ENOMEM;
-
- dev_dbg(rvu->dev, "%s: Allocated bitmap for id map (total=%d)\n",
- __func__, table->tot_ids);
-
- /* Initialize list heads for npc_exact_table entries.
- * This entry is used by debugfs to show entries in
- * exact match table.
- */
- for (i = 0; i < NPC_EXACT_TBL_MAX_WAYS; i++)
- INIT_LIST_HEAD(&table->lhead_mem_tbl_entry[i]);
-
- INIT_LIST_HEAD(&table->lhead_cam_tbl_entry);
- INIT_LIST_HEAD(&table->lhead_gbl);
-
- mutex_init(&table->lock);
-
- rvu_exact_config_secret_key(rvu);
- rvu_exact_config_search_key(rvu);
-
- rvu_exact_config_table_mask(rvu);
- rvu_exact_config_result_ctrl(rvu, table->mem_table.depth);
-
- /* - No drop rule for LBK
- * - Drop rules for SDP and each LMAC.
- */
- exact_val = !NPC_EXACT_RESULT_HIT;
- exact_mask = NPC_EXACT_RESULT_HIT;
-
- /* nibble - 3 2 1 0
- * L3B L3M L2B L2M
- */
- bcast_mcast_val = 0b0000;
- bcast_mcast_mask = 0b0011;
-
- /* Install SDP drop rule */
- drop_mcam_idx = &table->num_drop_rules;
-
- max_lmac_cnt = rvu->cgx_cnt_max * MAX_LMAC_PER_CGX + PF_CGXMAP_BASE;
- for (i = PF_CGXMAP_BASE; i < max_lmac_cnt; i++) {
- if (rvu->pf2cgxlmac_map[i] == 0xFF)
- continue;
-
- rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[i], &cgx_id, &lmac_id);
-
- rc = rvu_npc_exact_calc_drop_rule_chan_and_mask(rvu, NIX_INTF_TYPE_CGX, cgx_id,
- lmac_id, &chan_val, &chan_mask);
- if (!rc) {
- dev_err(rvu->dev,
- "%s: failed, info chan_val=0x%llx chan_mask=0x%llx rule_id=%d\n",
- __func__, chan_val, chan_mask, *drop_mcam_idx);
- return -EINVAL;
- }
-
- /* Filter rules are only for PF */
- pcifunc = RVU_PFFUNC(i, 0);
-
- dev_dbg(rvu->dev,
- "%s:Drop rule cgx=%d lmac=%d chan(val=0x%llx, mask=0x%llx\n",
- __func__, cgx_id, lmac_id, chan_val, chan_mask);
-
- rc = rvu_npc_exact_save_drop_rule_chan_and_mask(rvu, table->num_drop_rules,
- chan_val, chan_mask, pcifunc);
- if (!rc) {
- dev_err(rvu->dev,
- "%s: failed to set drop info for cgx=%d, lmac=%d, chan=%llx\n",
- __func__, cgx_id, lmac_id, chan_val);
- return err;
- }
-
- err = npc_install_mcam_drop_rule(rvu, *drop_mcam_idx,
- &table->counter_idx[*drop_mcam_idx],
- chan_val, chan_mask,
- exact_val, exact_mask,
- bcast_mcast_val, bcast_mcast_mask);
- if (err) {
- dev_err(rvu->dev,
- "failed to configure drop rule (cgx=%d lmac=%d)\n",
- cgx_id, lmac_id);
- return err;
- }
-
- (*drop_mcam_idx)++;
- }
-
- dev_info(rvu->dev, "initialized exact match table successfully\n");
- return 0;
-}
projects / platform / kernel / linux-starfive.git / commitdiff