diff options
| author | Florian Fainelli <f.fainelli@gmail.com> | 2018-04-27 13:11:14 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-04-29 22:50:36 -0400 |
| commit | 3ac305c386f698abccd0523c64a8aef248c89bc6 (patch) | |
| tree | 560ca8bcc6bae44af98c94846a52962094bca987 /include | |
| parent | c1b28847f7c00906a765516e8291ea2a71add64b (diff) | |
net: core: Assert the size of netdev_featres_t
We have about 53 netdev_features_t bits defined and counting, add a
build time check to catch when an u64 type will not be enough and we
will have to convert that to a bitmap. This is done in
register_netdevice() for convenience.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/netdevice.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 82f5a9aba578..9e09dd897b74 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -4108,6 +4108,12 @@ const char *netdev_drivername(const struct net_device *dev); void linkwatch_run_queue(void); +static inline void netdev_features_size_check(void) +{ + BUILD_BUG_ON(sizeof(netdev_features_t) * BITS_PER_BYTE < + NETDEV_FEATURE_COUNT); +} + static inline netdev_features_t netdev_intersect_features(netdev_features_t f1, netdev_features_t f2) { |