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authorJakub Kicinski <jakub.kicinski@netronome.com>2018-07-30 20:43:53 -0700
committerDavid S. Miller <davem@davemloft.net>2018-07-31 09:48:21 -0700
commit84c6b86875e01a08a0daa6fdd4a01b36bf0bf0b2 (patch)
tree06fb904b95b6f0427a577120753713aa39050660 /include
parentf734607e819b951bae3b436b026ec672082e9241 (diff)
xsk: don't allow umem replace at stack level
Currently drivers have to check if they already have a umem installed for a given queue and return an error if so. Make better use of XDP_QUERY_XSK_UMEM and move this functionality to the core. We need to keep rtnl across the calls now. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Acked-by: Björn Töpel <bjorn.topel@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/linux/netdevice.h7
1 files changed, 4 insertions, 3 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 3bf7e93c9e96..282e2e95ad5b 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -872,10 +872,10 @@ struct netdev_bpf {
struct {
struct bpf_offloaded_map *offmap;
};
- /* XDP_SETUP_XSK_UMEM */
+ /* XDP_QUERY_XSK_UMEM, XDP_SETUP_XSK_UMEM */
struct {
- struct xdp_umem *umem;
- u16 queue_id;
+ struct xdp_umem *umem; /* out for query*/
+ u16 queue_id; /* in for query */
} xsk;
};
};
@@ -3568,6 +3568,7 @@ int dev_change_xdp_fd(struct net_device *dev, struct netlink_ext_ack *extack,
int fd, u32 flags);
u32 __dev_xdp_query(struct net_device *dev, bpf_op_t xdp_op,
enum bpf_netdev_command cmd);
+int xdp_umem_query(struct net_device *dev, u16 queue_id);
int __dev_forward_skb(struct net_device *dev, struct sk_buff *skb);
int dev_forward_skb(struct net_device *dev, struct sk_buff *skb);