LCOV - code coverage report
Current view: top level - drivers/net/bonding - rte_eth_bond_alb.c (source / functions) Hit Total Coverage
Test: Code coverage Lines: 0 98 0.0 %
Date: 2024-02-14 00:53:57 Functions: 0 5 0.0 %
Legend: Lines: hit not hit | Branches: + taken - not taken # not executed Branches: 0 46 0.0 %

           Branch data     Line data    Source code
       1                 :            : /* SPDX-License-Identifier: BSD-3-Clause
       2                 :            :  * Copyright(c) 2010-2015 Intel Corporation
       3                 :            :  */
       4                 :            : 
       5                 :            : #include "eth_bond_private.h"
       6                 :            : #include "rte_eth_bond_alb.h"
       7                 :            : 
       8                 :            : static inline uint8_t
       9                 :            : simple_hash(uint8_t *hash_start, int hash_size)
      10                 :            : {
      11                 :            :         int i;
      12                 :            :         uint8_t hash;
      13                 :            : 
      14                 :            :         hash = 0;
      15   [ #  #  #  # ]:          0 :         for (i = 0; i < hash_size; ++i)
      16                 :          0 :                 hash ^= hash_start[i];
      17                 :            : 
      18                 :            :         return hash;
      19                 :            : }
      20                 :            : 
      21                 :            : static uint16_t
      22                 :            : calculate_member(struct bond_dev_private *internals)
      23                 :            : {
      24                 :            :         uint16_t idx;
      25                 :            : 
      26                 :          0 :         idx = (internals->mode6.last_member + 1) % internals->active_member_count;
      27                 :          0 :         internals->mode6.last_member = idx;
      28                 :          0 :         return internals->active_members[idx];
      29                 :            : }
      30                 :            : 
      31                 :            : int
      32                 :          0 : bond_mode_alb_enable(struct rte_eth_dev *bond_dev)
      33                 :            : {
      34                 :          0 :         struct bond_dev_private *internals = bond_dev->data->dev_private;
      35                 :          0 :         struct client_data *hash_table = internals->mode6.client_table;
      36                 :            : 
      37                 :            :         uint16_t data_size;
      38                 :            :         char mem_name[RTE_ETH_NAME_MAX_LEN];
      39         [ #  # ]:          0 :         int socket_id = bond_dev->data->numa_node;
      40                 :            : 
      41                 :            :         /* Fill hash table with initial values */
      42                 :            :         memset(hash_table, 0, sizeof(struct client_data) * ALB_HASH_TABLE_SIZE);
      43                 :            :         rte_spinlock_init(&internals->mode6.lock);
      44                 :          0 :         internals->mode6.last_member = ALB_NULL_INDEX;
      45                 :          0 :         internals->mode6.ntt = 0;
      46                 :            : 
      47                 :            :         /* Initialize memory pool for ARP packets to send */
      48         [ #  # ]:          0 :         if (internals->mode6.mempool == NULL) {
      49                 :            :                 /*
      50                 :            :                  * 256 is size of ETH header, ARP header and nested VLAN headers.
      51                 :            :                  * The value is chosen to be cache aligned.
      52                 :            :                  */
      53                 :            :                 data_size = 256 + RTE_PKTMBUF_HEADROOM;
      54                 :          0 :                 snprintf(mem_name, sizeof(mem_name), "%s_ALB",
      55                 :          0 :                                 bond_dev->device->name);
      56                 :          0 :                 internals->mode6.mempool = rte_pktmbuf_pool_create(mem_name,
      57                 :            :                         512 * RTE_MAX_ETHPORTS,
      58                 :            :                         RTE_MEMPOOL_CACHE_MAX_SIZE >= 32 ?
      59                 :            :                                 32 : RTE_MEMPOOL_CACHE_MAX_SIZE,
      60                 :            :                         0, data_size, socket_id);
      61                 :            : 
      62         [ #  # ]:          0 :                 if (internals->mode6.mempool == NULL) {
      63                 :          0 :                         RTE_BOND_LOG(ERR, "%s: Failed to initialize ALB mempool.\n",
      64                 :            :                                      bond_dev->device->name);
      65                 :          0 :                         goto mempool_alloc_error;
      66                 :            :                 }
      67                 :            :         }
      68                 :            : 
      69                 :            :         return 0;
      70                 :            : 
      71                 :            : mempool_alloc_error:
      72                 :          0 :         return -ENOMEM;
      73                 :            : }
      74                 :            : 
      75                 :          0 : void bond_mode_alb_arp_recv(struct rte_ether_hdr *eth_h, uint16_t offset,
      76                 :            :                 struct bond_dev_private *internals)
      77                 :            : {
      78                 :            :         struct rte_arp_hdr *arp;
      79                 :            : 
      80                 :          0 :         struct client_data *hash_table = internals->mode6.client_table;
      81                 :            :         struct client_data *client_info;
      82                 :            : 
      83                 :            :         uint8_t hash_index;
      84                 :            : 
      85                 :          0 :         arp = (struct rte_arp_hdr *)((char *)(eth_h + 1) + offset);
      86                 :            : 
      87                 :            :         /* ARP Requests are forwarded to the application with no changes */
      88         [ #  # ]:          0 :         if (arp->arp_opcode != rte_cpu_to_be_16(RTE_ARP_OP_REPLY))
      89                 :            :                 return;
      90                 :            : 
      91                 :            :         /* From now on, we analyze only ARP Reply packets */
      92                 :          0 :         hash_index = simple_hash((uint8_t *) &arp->arp_data.arp_sip,
      93                 :            :                         sizeof(arp->arp_data.arp_sip));
      94                 :          0 :         client_info = &hash_table[hash_index];
      95                 :            : 
      96                 :            :         /*
      97                 :            :          * We got reply for ARP Request send by the application. We need to
      98                 :            :          * update client table when received data differ from what is stored
      99                 :            :          * in ALB table and issue sending update packet to that member.
     100                 :            :          */
     101                 :          0 :         rte_spinlock_lock(&internals->mode6.lock);
     102         [ #  # ]:          0 :         if (client_info->in_use == 0 ||
     103         [ #  # ]:          0 :                         client_info->app_ip != arp->arp_data.arp_tip ||
     104   [ #  #  #  # ]:          0 :                         client_info->cli_ip != arp->arp_data.arp_sip ||
     105                 :            :                         !rte_is_same_ether_addr(&client_info->cli_mac,
     106                 :          0 :                                                 &arp->arp_data.arp_sha) ||
     107         [ #  # ]:          0 :                         client_info->vlan_count != offset / sizeof(struct rte_vlan_hdr) ||
     108         [ #  # ]:          0 :                         memcmp(client_info->vlan, eth_h + 1, offset) != 0
     109                 :            :         ) {
     110                 :          0 :                 client_info->in_use = 1;
     111                 :          0 :                 client_info->app_ip = arp->arp_data.arp_tip;
     112                 :          0 :                 client_info->cli_ip = arp->arp_data.arp_sip;
     113                 :            :                 rte_ether_addr_copy(&arp->arp_data.arp_sha,
     114                 :            :                                 &client_info->cli_mac);
     115                 :          0 :                 client_info->member_idx = calculate_member(internals);
     116                 :          0 :                 rte_eth_macaddr_get(client_info->member_idx,
     117                 :            :                                 &client_info->app_mac);
     118                 :            :                 rte_ether_addr_copy(&client_info->app_mac,
     119                 :            :                                 &arp->arp_data.arp_tha);
     120                 :          0 :                 memcpy(client_info->vlan, eth_h + 1, offset);
     121                 :          0 :                 client_info->vlan_count = offset / sizeof(struct rte_vlan_hdr);
     122                 :            :         }
     123                 :          0 :         internals->mode6.ntt = 1;
     124                 :            :         rte_spinlock_unlock(&internals->mode6.lock);
     125                 :            : }
     126                 :            : 
     127                 :            : uint16_t
     128                 :          0 : bond_mode_alb_arp_xmit(struct rte_ether_hdr *eth_h, uint16_t offset,
     129                 :            :                 struct bond_dev_private *internals)
     130                 :            : {
     131                 :            :         struct rte_arp_hdr *arp;
     132                 :            : 
     133                 :          0 :         struct client_data *hash_table = internals->mode6.client_table;
     134                 :            :         struct client_data *client_info;
     135                 :            : 
     136                 :            :         uint8_t hash_index;
     137                 :            : 
     138                 :            :         struct rte_ether_addr bonding_mac;
     139                 :            : 
     140                 :          0 :         arp = (struct rte_arp_hdr *)((char *)(eth_h + 1) + offset);
     141                 :            : 
     142                 :            :         /*
     143                 :            :          * Traffic with src MAC other than bonding should be sent on
     144                 :            :          * current primary port.
     145                 :            :          */
     146                 :          0 :         rte_eth_macaddr_get(internals->port_id, &bonding_mac);
     147         [ #  # ]:          0 :         if (!rte_is_same_ether_addr(&bonding_mac, &arp->arp_data.arp_sha)) {
     148                 :          0 :                 rte_eth_macaddr_get(internals->current_primary_port,
     149                 :            :                                 &arp->arp_data.arp_sha);
     150                 :          0 :                 return internals->current_primary_port;
     151                 :            :         }
     152                 :            : 
     153                 :          0 :         hash_index = simple_hash((uint8_t *)&arp->arp_data.arp_tip,
     154                 :            :                         sizeof(uint32_t));
     155                 :          0 :         client_info = &hash_table[hash_index];
     156                 :            : 
     157                 :          0 :         rte_spinlock_lock(&internals->mode6.lock);
     158         [ #  # ]:          0 :         if (arp->arp_opcode == rte_cpu_to_be_16(RTE_ARP_OP_REPLY)) {
     159         [ #  # ]:          0 :                 if (client_info->in_use) {
     160         [ #  # ]:          0 :                         if (client_info->app_ip == arp->arp_data.arp_sip &&
     161         [ #  # ]:          0 :                                 client_info->cli_ip == arp->arp_data.arp_tip) {
     162                 :            :                                 /* Entry is already assigned to this client */
     163         [ #  # ]:          0 :                                 if (!rte_is_broadcast_ether_addr(
     164                 :            :                                                 &arp->arp_data.arp_tha)) {
     165                 :            :                                         rte_ether_addr_copy(
     166                 :            :                                                 &arp->arp_data.arp_tha,
     167                 :            :                                                 &client_info->cli_mac);
     168                 :            :                                 }
     169                 :          0 :                                 rte_eth_macaddr_get(client_info->member_idx,
     170                 :            :                                                 &client_info->app_mac);
     171                 :            :                                 rte_ether_addr_copy(&client_info->app_mac,
     172                 :            :                                                 &arp->arp_data.arp_sha);
     173                 :          0 :                                 memcpy(client_info->vlan, eth_h + 1, offset);
     174                 :          0 :                                 client_info->vlan_count = offset / sizeof(struct rte_vlan_hdr);
     175                 :            :                                 rte_spinlock_unlock(&internals->mode6.lock);
     176                 :          0 :                                 return client_info->member_idx;
     177                 :            :                         }
     178                 :            :                 }
     179                 :            : 
     180                 :            :                 /* Assign new member to this client and update src mac in ARP */
     181                 :          0 :                 client_info->in_use = 1;
     182                 :          0 :                 client_info->ntt = 0;
     183                 :          0 :                 client_info->app_ip = arp->arp_data.arp_sip;
     184                 :            :                 rte_ether_addr_copy(&arp->arp_data.arp_tha,
     185                 :            :                                 &client_info->cli_mac);
     186                 :          0 :                 client_info->cli_ip = arp->arp_data.arp_tip;
     187                 :          0 :                 client_info->member_idx = calculate_member(internals);
     188                 :          0 :                 rte_eth_macaddr_get(client_info->member_idx,
     189                 :            :                                 &client_info->app_mac);
     190                 :            :                 rte_ether_addr_copy(&client_info->app_mac,
     191                 :            :                                 &arp->arp_data.arp_sha);
     192                 :          0 :                 memcpy(client_info->vlan, eth_h + 1, offset);
     193                 :          0 :                 client_info->vlan_count = offset / sizeof(struct rte_vlan_hdr);
     194                 :            :                 rte_spinlock_unlock(&internals->mode6.lock);
     195                 :          0 :                 return client_info->member_idx;
     196                 :            :         }
     197                 :            : 
     198                 :            :         /* If packet is not ARP Reply, send it on current primary port. */
     199                 :            :         rte_spinlock_unlock(&internals->mode6.lock);
     200                 :          0 :         rte_eth_macaddr_get(internals->current_primary_port,
     201                 :            :                         &arp->arp_data.arp_sha);
     202                 :          0 :         return internals->current_primary_port;
     203                 :            : }
     204                 :            : 
     205                 :            : uint16_t
     206                 :          0 : bond_mode_alb_arp_upd(struct client_data *client_info,
     207                 :            :                 struct rte_mbuf *pkt, struct bond_dev_private *internals)
     208                 :            : {
     209                 :            :         struct rte_ether_hdr *eth_h;
     210                 :            :         struct rte_arp_hdr *arp_h;
     211                 :            :         uint16_t member_idx;
     212                 :            : 
     213                 :          0 :         rte_spinlock_lock(&internals->mode6.lock);
     214         [ #  # ]:          0 :         eth_h = rte_pktmbuf_mtod(pkt, struct rte_ether_hdr *);
     215                 :            : 
     216                 :            :         rte_ether_addr_copy(&client_info->app_mac, &eth_h->src_addr);
     217                 :            :         rte_ether_addr_copy(&client_info->cli_mac, &eth_h->dst_addr);
     218         [ #  # ]:          0 :         if (client_info->vlan_count > 0)
     219                 :          0 :                 eth_h->ether_type = rte_cpu_to_be_16(RTE_ETHER_TYPE_VLAN);
     220                 :            :         else
     221                 :          0 :                 eth_h->ether_type = rte_cpu_to_be_16(RTE_ETHER_TYPE_ARP);
     222                 :            : 
     223                 :          0 :         arp_h = (struct rte_arp_hdr *)(
     224                 :            :                 (char *)eth_h + sizeof(struct rte_ether_hdr)
     225                 :          0 :                 + client_info->vlan_count * sizeof(struct rte_vlan_hdr));
     226                 :            : 
     227                 :          0 :         memcpy(eth_h + 1, client_info->vlan,
     228                 :            :                         client_info->vlan_count * sizeof(struct rte_vlan_hdr));
     229                 :            : 
     230                 :            :         rte_ether_addr_copy(&client_info->app_mac, &arp_h->arp_data.arp_sha);
     231                 :          0 :         arp_h->arp_data.arp_sip = client_info->app_ip;
     232                 :            :         rte_ether_addr_copy(&client_info->cli_mac, &arp_h->arp_data.arp_tha);
     233                 :          0 :         arp_h->arp_data.arp_tip = client_info->cli_ip;
     234                 :            : 
     235                 :          0 :         arp_h->arp_hardware = rte_cpu_to_be_16(RTE_ARP_HRD_ETHER);
     236                 :          0 :         arp_h->arp_protocol = rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV4);
     237                 :          0 :         arp_h->arp_hlen = RTE_ETHER_ADDR_LEN;
     238                 :          0 :         arp_h->arp_plen = sizeof(uint32_t);
     239                 :          0 :         arp_h->arp_opcode = rte_cpu_to_be_16(RTE_ARP_OP_REPLY);
     240                 :            : 
     241                 :          0 :         member_idx = client_info->member_idx;
     242                 :            :         rte_spinlock_unlock(&internals->mode6.lock);
     243                 :            : 
     244                 :          0 :         return member_idx;
     245                 :            : }
     246                 :            : 
     247                 :            : void
     248                 :          0 : bond_mode_alb_client_list_upd(struct rte_eth_dev *bond_dev)
     249                 :            : {
     250                 :          0 :         struct bond_dev_private *internals = bond_dev->data->dev_private;
     251                 :            :         struct client_data *client_info;
     252                 :            : 
     253                 :            :         int i;
     254                 :            : 
     255                 :            :         /* If active member count is 0, it's pointless to refresh alb table */
     256         [ #  # ]:          0 :         if (internals->active_member_count <= 0)
     257                 :            :                 return;
     258                 :            : 
     259                 :          0 :         rte_spinlock_lock(&internals->mode6.lock);
     260                 :          0 :         internals->mode6.last_member = ALB_NULL_INDEX;
     261                 :            : 
     262         [ #  # ]:          0 :         for (i = 0; i < ALB_HASH_TABLE_SIZE; i++) {
     263                 :            :                 client_info = &internals->mode6.client_table[i];
     264         [ #  # ]:          0 :                 if (client_info->in_use) {
     265                 :          0 :                         client_info->member_idx = calculate_member(internals);
     266                 :          0 :                         rte_eth_macaddr_get(client_info->member_idx, &client_info->app_mac);
     267                 :          0 :                         internals->mode6.ntt = 1;
     268                 :            :                 }
     269                 :            :         }
     270                 :            :         rte_spinlock_unlock(&internals->mode6.lock);
     271                 :            : }

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