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Fri, 24 Oct 2025 11:09:41 -0700 (PDT) Received: from tixy.nay.do ([2405:201:8000:a149:4670:c55c:fe13:754d]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-7a274dbffacsm6679137b3a.66.2025.10.24.11.09.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 24 Oct 2025 11:09:41 -0700 (PDT) From: Ankan Biswas To: ajit.khaparde@broadcom.com, sriharsha.basavapatna@broadcom.com, somnath.kotur@broadcom.com, andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, skhan@linuxfoundation.org, khalid@kernel.org, david.hunter.linux@gmail.com, linux-kernel-mentees@lists.linux.dev, Ankan Biswas Subject: [PATCH v2] net: ethernet: emulex: benet: fix adapter->fw_on_flash truncation warning Date: Fri, 24 Oct 2025 23:39:26 +0530 Message-ID: <20251024180926.3842-1-spyjetfayed@gmail.com> X-Mailer: git-send-email 2.51.1 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The benet driver copies both fw_ver (32 bytes) and fw_on_flash (32 bytes) into ethtool_drvinfo->fw_version (32 bytes), leading to a potential string truncation warning when built with W=1. Store fw_on_flash in ethtool_drvinfo->erom_version instead, which some drivers use to report secondary firmware information. Signed-off-by: Ankan Biswas --- .../net/ethernet/emulex/benet/be_ethtool.c | 100 ++++++++++-------- 1 file changed, 54 insertions(+), 46 deletions(-) diff --git a/drivers/net/ethernet/emulex/benet/be_ethtool.c b/drivers/net/ethernet/emulex/benet/be_ethtool.c index f9216326bdfe..42803999ea1d 100644 --- a/drivers/net/ethernet/emulex/benet/be_ethtool.c +++ b/drivers/net/ethernet/emulex/benet/be_ethtool.c @@ -221,12 +221,20 @@ static void be_get_drvinfo(struct net_device *netdev, struct be_adapter *adapter = netdev_priv(netdev); strscpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver)); - if (!memcmp(adapter->fw_ver, adapter->fw_on_flash, FW_VER_LEN)) + if (!memcmp(adapter->fw_ver, adapter->fw_on_flash, FW_VER_LEN)) { strscpy(drvinfo->fw_version, adapter->fw_ver, sizeof(drvinfo->fw_version)); - else - snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version), - "%s [%s]", adapter->fw_ver, adapter->fw_on_flash); + + } else { + strscpy(drvinfo->fw_version, adapter->fw_ver, + sizeof(drvinfo->fw_version)); + + /* + * Report fw_on_flash in ethtool's erom_version field. + */ + strscpy(drvinfo->erom_version, adapter->fw_on_flash, + sizeof(drvinfo->erom_version)); + } strscpy(drvinfo->bus_info, pci_name(adapter->pdev), sizeof(drvinfo->bus_info)); @@ -241,7 +249,7 @@ static u32 lancer_cmd_get_file_len(struct be_adapter *adapter, u8 *file_name) memset(&data_len_cmd, 0, sizeof(data_len_cmd)); /* data_offset and data_size should be 0 to get reg len */ lancer_cmd_read_object(adapter, &data_len_cmd, 0, 0, file_name, - &data_read, &eof, &addn_status); + &data_read, &eof, &addn_status); return data_read; } @@ -252,7 +260,7 @@ static int be_get_dump_len(struct be_adapter *adapter) if (lancer_chip(adapter)) dump_size = lancer_cmd_get_file_len(adapter, - LANCER_FW_DUMP_FILE); + LANCER_FW_DUMP_FILE); else dump_size = adapter->fat_dump_len; @@ -301,13 +309,13 @@ static int lancer_cmd_read_file(struct be_adapter *adapter, u8 *file_name, } static int be_read_dump_data(struct be_adapter *adapter, u32 dump_len, - void *buf) + void *buf) { int status = 0; if (lancer_chip(adapter)) status = lancer_cmd_read_file(adapter, LANCER_FW_DUMP_FILE, - dump_len, buf); + dump_len, buf); else status = be_cmd_get_fat_dump(adapter, dump_len, buf); @@ -635,8 +643,8 @@ static int be_get_link_ksettings(struct net_device *netdev, supported = convert_to_et_setting(adapter, - auto_speeds | - fixed_speeds); + auto_speeds | + fixed_speeds); advertising = convert_to_et_setting(adapter, auto_speeds); @@ -683,9 +691,9 @@ static int be_get_link_ksettings(struct net_device *netdev, } static void be_get_ringparam(struct net_device *netdev, - struct ethtool_ringparam *ring, - struct kernel_ethtool_ringparam *kernel_ring, - struct netlink_ext_ack *extack) + struct ethtool_ringparam *ring, + struct kernel_ethtool_ringparam *kernel_ring, + struct netlink_ext_ack *extack) { struct be_adapter *adapter = netdev_priv(netdev); @@ -737,7 +745,7 @@ static int be_set_phys_id(struct net_device *netdev, &adapter->beacon_state); if (status) return be_cmd_status(status); - return 1; /* cycle on/off once per second */ + return 1; /* cycle on/off once per second */ case ETHTOOL_ID_ON: status = be_cmd_set_beacon_state(adapter, adapter->hba_port_num, @@ -764,7 +772,7 @@ static int be_set_dump(struct net_device *netdev, struct ethtool_dump *dump) int status; if (!lancer_chip(adapter) || - !check_privilege(adapter, MAX_PRIVILEGES)) + !check_privilege(adapter, MAX_PRIVILEGES)) return -EOPNOTSUPP; switch (dump->flag) { @@ -873,7 +881,7 @@ static int be_test_ddr_dma(struct be_adapter *adapter) } static u64 be_loopback_test(struct be_adapter *adapter, u8 loopback_type, - u64 *status) + u64 *status) { int ret; @@ -883,7 +891,7 @@ static u64 be_loopback_test(struct be_adapter *adapter, u8 loopback_type, return ret; *status = be_cmd_loopback_test(adapter, adapter->hba_port_num, - loopback_type, 1500, 2, 0xabc); + loopback_type, 1500, 2, 0xabc); ret = be_cmd_set_loopback(adapter, adapter->hba_port_num, BE_NO_LOOPBACK, 1); @@ -920,7 +928,7 @@ static void be_self_test(struct net_device *netdev, struct ethtool_test *test, if (test->flags & ETH_TEST_FL_EXTERNAL_LB) { if (be_loopback_test(adapter, BE_ONE_PORT_EXT_LOOPBACK, - &data[2]) != 0) + &data[2]) != 0) test->flags |= ETH_TEST_FL_FAILED; test->flags |= ETH_TEST_FL_EXTERNAL_LB_DONE; } @@ -999,10 +1007,10 @@ static int be_get_eeprom_len(struct net_device *netdev) if (lancer_chip(adapter)) { if (be_physfn(adapter)) return lancer_cmd_get_file_len(adapter, - LANCER_VPD_PF_FILE); + LANCER_VPD_PF_FILE); else return lancer_cmd_get_file_len(adapter, - LANCER_VPD_VF_FILE); + LANCER_VPD_VF_FILE); } else { return BE_READ_SEEPROM_LEN; } @@ -1022,10 +1030,10 @@ static int be_read_eeprom(struct net_device *netdev, if (lancer_chip(adapter)) { if (be_physfn(adapter)) return lancer_cmd_read_file(adapter, LANCER_VPD_PF_FILE, - eeprom->len, data); + eeprom->len, data); else return lancer_cmd_read_file(adapter, LANCER_VPD_VF_FILE, - eeprom->len, data); + eeprom->len, data); } eeprom->magic = BE_VENDOR_ID | (adapter->pdev->device<<16); @@ -1074,7 +1082,7 @@ static void be_set_msg_level(struct net_device *netdev, u32 level) } static int be_get_rxfh_fields(struct net_device *netdev, - struct ethtool_rxfh_fields *cmd) + struct ethtool_rxfh_fields *cmd) { struct be_adapter *adapter = netdev_priv(netdev); u64 flow_type = cmd->flow_type; @@ -1140,8 +1148,8 @@ static int be_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd, } static int be_set_rxfh_fields(struct net_device *netdev, - const struct ethtool_rxfh_fields *cmd, - struct netlink_ext_ack *extack) + const struct ethtool_rxfh_fields *cmd, + struct netlink_ext_ack *extack) { struct be_adapter *adapter = netdev_priv(netdev); u32 rss_flags = adapter->rss_info.rss_flags; @@ -1154,7 +1162,7 @@ static int be_set_rxfh_fields(struct net_device *netdev, } if (cmd->data != L3_RSS_FLAGS && - cmd->data != (L3_RSS_FLAGS | L4_RSS_FLAGS)) + cmd->data != (L3_RSS_FLAGS | L4_RSS_FLAGS)) return -EINVAL; switch (cmd->flow_type) { @@ -1174,7 +1182,7 @@ static int be_set_rxfh_fields(struct net_device *netdev, break; case UDP_V4_FLOW: if ((cmd->data == (L3_RSS_FLAGS | L4_RSS_FLAGS)) && - BEx_chip(adapter)) + BEx_chip(adapter)) return -EINVAL; if (cmd->data == L3_RSS_FLAGS) @@ -1185,7 +1193,7 @@ static int be_set_rxfh_fields(struct net_device *netdev, break; case UDP_V6_FLOW: if ((cmd->data == (L3_RSS_FLAGS | L4_RSS_FLAGS)) && - BEx_chip(adapter)) + BEx_chip(adapter)) return -EINVAL; if (cmd->data == L3_RSS_FLAGS) @@ -1211,7 +1219,7 @@ static int be_set_rxfh_fields(struct net_device *netdev, } static void be_get_channels(struct net_device *netdev, - struct ethtool_channels *ch) + struct ethtool_channels *ch) { struct be_adapter *adapter = netdev_priv(netdev); u16 num_rx_irqs = max_t(u16, adapter->num_rss_qs, 1); @@ -1237,14 +1245,14 @@ static int be_set_channels(struct net_device *netdev, * combined and either RX-only or TX-only channels. */ if (ch->other_count || !ch->combined_count || - (ch->rx_count && ch->tx_count)) + (ch->rx_count && ch->tx_count)) return -EINVAL; if (ch->combined_count > be_max_qp_irqs(adapter) || - (ch->rx_count && - (ch->rx_count + ch->combined_count) > be_max_rx_irqs(adapter)) || - (ch->tx_count && - (ch->tx_count + ch->combined_count) > be_max_tx_irqs(adapter))) + (ch->rx_count && + (ch->rx_count + ch->combined_count) > be_max_rx_irqs(adapter)) || + (ch->tx_count && + (ch->tx_count + ch->combined_count) > be_max_tx_irqs(adapter))) return -EINVAL; adapter->cfg_num_rx_irqs = ch->combined_count + ch->rx_count; @@ -1265,7 +1273,7 @@ static u32 be_get_rxfh_key_size(struct net_device *netdev) } static int be_get_rxfh(struct net_device *netdev, - struct ethtool_rxfh_param *rxfh) + struct ethtool_rxfh_param *rxfh) { struct be_adapter *adapter = netdev_priv(netdev); int i; @@ -1285,8 +1293,8 @@ static int be_get_rxfh(struct net_device *netdev, } static int be_set_rxfh(struct net_device *netdev, - struct ethtool_rxfh_param *rxfh, - struct netlink_ext_ack *extack) + struct ethtool_rxfh_param *rxfh, + struct netlink_ext_ack *extack) { int rc = 0, i, j; struct be_adapter *adapter = netdev_priv(netdev); @@ -1295,7 +1303,7 @@ static int be_set_rxfh(struct net_device *netdev, /* We do not allow change in unsupported parameters */ if (rxfh->hfunc != ETH_RSS_HASH_NO_CHANGE && - rxfh->hfunc != ETH_RSS_HASH_TOP) + rxfh->hfunc != ETH_RSS_HASH_TOP) return -EOPNOTSUPP; if (rxfh->indir) { @@ -1309,27 +1317,27 @@ static int be_set_rxfh(struct net_device *netdev, } } else { memcpy(rsstable, adapter->rss_info.rsstable, - RSS_INDIR_TABLE_LEN); + RSS_INDIR_TABLE_LEN); } if (!hkey) - hkey = adapter->rss_info.rss_hkey; + hkey = adapter->rss_info.rss_hkey; rc = be_cmd_rss_config(adapter, rsstable, - adapter->rss_info.rss_flags, - RSS_INDIR_TABLE_LEN, hkey); + adapter->rss_info.rss_flags, + RSS_INDIR_TABLE_LEN, hkey); if (rc) { adapter->rss_info.rss_flags = RSS_ENABLE_NONE; return -EIO; } memcpy(adapter->rss_info.rss_hkey, hkey, RSS_HASH_KEY_LEN); memcpy(adapter->rss_info.rsstable, rsstable, - RSS_INDIR_TABLE_LEN); + RSS_INDIR_TABLE_LEN); return 0; } static int be_get_module_info(struct net_device *netdev, - struct ethtool_modinfo *modinfo) + struct ethtool_modinfo *modinfo) { struct be_adapter *adapter = netdev_priv(netdev); u8 page_data[PAGE_DATA_LEN]; @@ -1417,8 +1425,8 @@ static int be_set_priv_flags(struct net_device *netdev, u32 flags) const struct ethtool_ops be_ethtool_ops = { .supported_coalesce_params = ETHTOOL_COALESCE_USECS | - ETHTOOL_COALESCE_USE_ADAPTIVE | - ETHTOOL_COALESCE_USECS_LOW_HIGH, + ETHTOOL_COALESCE_USE_ADAPTIVE | + ETHTOOL_COALESCE_USECS_LOW_HIGH, .get_drvinfo = be_get_drvinfo, .get_wol = be_get_wol, .set_wol = be_set_wol, -- 2.51.1