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Message-ID: <79c65e1c-dbc9-4a16-b718-af8e227b6290@gmail.com>
Date: Tue, 28 Oct 2025 22:51:53 +0530
From: Ankan Biswas <spyjetfayed@...il.com>
To: David Hunter <david.hunter.linux@...il.com>, ajit.khaparde@...adcom.com,
sriharsha.basavapatna@...adcom.com, somnath.kotur@...adcom.com,
andrew+netdev@...n.ch, davem@...emloft.net, edumazet@...gle.com,
kuba@...nel.org, pabeni@...hat.com
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
skhan@...uxfoundation.org, khalid@...nel.org,
linux-kernel-mentees@...ts.linux.dev
Subject: Re: [PATCH v2] net: ethernet: emulex: benet: fix adapter->fw_on_flash
truncation warning
On 10/27/25 11:31 PM, David Hunter wrote:
> On 10/24/25 14:09, Ankan Biswas wrote:
>> 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.
>> send
>> Signed-off-by: Ankan Biswas <spyjetfayed@...il.com>
>> ---
>
> Hey Ankan,
> When submitting patches with version 2 or afterwards, you should
> generally put information about what changed from version 1 to version
> 2. This changelog helps people keep track of what changed in subsequent
> versions.
>
> Also, did you do any testing for this patch?
>
Hi David,
I had used the wrong formatting command which resulted in a bunch of
changes, most of the changes are due to formatting issues which is why I
had to send a [PATCH v3].
As for testing the warning during the build is suppressed by this patch.
It was not tested on the actual hardware.
Should I send a [PATCH net v4] with the changelogs added?
Best Regards,
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);
>
> Also, are you simply changing the tab length here? Any particular reason?
>
>> 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 */
>
> I'm not sure, but it looks like you are adding formatting changes to
> code that you are not necessarily changing. Is my interpetation correct?>
>> 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,
>
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