diff options
| author | Mina Almasry <almasrymina@google.com> | 2025-05-08 00:48:28 +0000 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2025-05-13 11:12:49 +0200 |
| commit | ae28cb114727dd599689725c27fb1c45627094ba (patch) | |
| tree | 5b595ac5e66a9ba63e21a1fc30814bd3766184dd /net/core/netdev-genl.c | |
| parent | c32532670cec6d359e84c202d9d16bf948bebb78 (diff) | |
net: check for driver support in netmem TX
We should not enable netmem TX for drivers that don't declare support.
Check for driver netmem TX support during devmem TX binding and fail if
the driver does not have the functionality.
Check for driver support in validate_xmit_skb as well.
Signed-off-by: Mina Almasry <almasrymina@google.com>
Acked-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20250508004830.4100853-9-almasrymina@google.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'net/core/netdev-genl.c')
| -rw-r--r-- | net/core/netdev-genl.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/net/core/netdev-genl.c b/net/core/netdev-genl.c index 93ea57d96931..cfcf1654d4fb 100644 --- a/net/core/netdev-genl.c +++ b/net/core/netdev-genl.c @@ -1013,6 +1013,13 @@ int netdev_nl_bind_tx_doit(struct sk_buff *skb, struct genl_info *info) goto err_unlock_netdev; } + if (!netdev->netmem_tx) { + err = -EOPNOTSUPP; + NL_SET_ERR_MSG(info->extack, + "Driver does not support netmem TX"); + goto err_unlock_netdev; + } + binding = net_devmem_bind_dmabuf(netdev, DMA_TO_DEVICE, dmabuf_fd, info->extack); if (IS_ERR(binding)) { |