diff options
| author | David Arinzon <darinzon@amazon.com> | 2024-05-12 13:46:36 +0000 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-05-13 14:42:04 -0700 |
| commit | 97776caf6c6e3a932d8e1410e6810cbfcb69d42d (patch) | |
| tree | b116b5c867d4b3e58f76318d99a62a72f366f72b | |
| parent | b37b98a3a0c1198bafe8c2d9ce0bc845b4e7a9a7 (diff) | |
net: ena: Changes around strscpy calls
strscpy copies as much of the string as possible,
meaning that the destination string will be truncated
in case of no space. As this is a non-critical error in
our case, adding a debug level print for indication.
This patch also removes a -1 which was added to ensure
enough space for NUL, but strscpy destination string is
guaranteed to be NUL-terminted, therefore, the -1 is
not needed.
Signed-off-by: David Arinzon <darinzon@amazon.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20240512134637.25299-5-darinzon@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | drivers/net/ethernet/amazon/ena/ena_ethtool.c | 16 | ||||
| -rw-r--r-- | drivers/net/ethernet/amazon/ena/ena_netdev.c | 17 |
2 files changed, 25 insertions, 8 deletions
diff --git a/drivers/net/ethernet/amazon/ena/ena_ethtool.c b/drivers/net/ethernet/amazon/ena/ena_ethtool.c index 28583db848e2..b24cc3f05248 100644 --- a/drivers/net/ethernet/amazon/ena/ena_ethtool.c +++ b/drivers/net/ethernet/amazon/ena/ena_ethtool.c @@ -460,10 +460,18 @@ static void ena_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) { struct ena_adapter *adapter = netdev_priv(dev); - - strscpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver)); - strscpy(info->bus_info, pci_name(adapter->pdev), - sizeof(info->bus_info)); + ssize_t ret = 0; + + ret = strscpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver)); + if (ret < 0) + netif_dbg(adapter, drv, dev, + "module name will be truncated, status = %zd\n", ret); + + ret = strscpy(info->bus_info, pci_name(adapter->pdev), + sizeof(info->bus_info)); + if (ret < 0) + netif_dbg(adapter, drv, dev, + "bus info will be truncated, status = %zd\n", ret); } static void ena_get_ringparam(struct net_device *netdev, diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.c b/drivers/net/ethernet/amazon/ena/ena_netdev.c index 7398bc615866..184b6e6cbed4 100644 --- a/drivers/net/ethernet/amazon/ena/ena_netdev.c +++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c @@ -2703,6 +2703,7 @@ static void ena_config_host_info(struct ena_com_dev *ena_dev, struct pci_dev *pd { struct device *dev = &pdev->dev; struct ena_admin_host_info *host_info; + ssize_t ret; int rc; /* Allocate only the host info */ @@ -2717,11 +2718,19 @@ static void ena_config_host_info(struct ena_com_dev *ena_dev, struct pci_dev *pd host_info->bdf = pci_dev_id(pdev); host_info->os_type = ENA_ADMIN_OS_LINUX; host_info->kernel_ver = LINUX_VERSION_CODE; - strscpy(host_info->kernel_ver_str, utsname()->version, - sizeof(host_info->kernel_ver_str) - 1); + ret = strscpy(host_info->kernel_ver_str, utsname()->version, + sizeof(host_info->kernel_ver_str)); + if (ret < 0) + dev_dbg(dev, + "kernel version string will be truncated, status = %zd\n", ret); + host_info->os_dist = 0; - strscpy(host_info->os_dist_str, utsname()->release, - sizeof(host_info->os_dist_str)); + ret = strscpy(host_info->os_dist_str, utsname()->release, + sizeof(host_info->os_dist_str)); + if (ret < 0) + dev_dbg(dev, + "OS distribution string will be truncated, status = %zd\n", ret); + host_info->driver_version = (DRV_MODULE_GEN_MAJOR) | (DRV_MODULE_GEN_MINOR << ENA_ADMIN_HOST_INFO_MINOR_SHIFT) | |