[RFC PATCH 7/7] tun: report new tun feature IFF_HASH
From: Yuri Benditovich <hidden>
Date: 2021-01-12 19:43:53
Also in:
bpf, kvm, lkml, virtualization
Subsystem:
networking drivers, the rest, tun/tap driver · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds, Willem de Bruijn, Jason Wang
IFF_HASH feature indicates that the tun supports TUNSETHASHPOPULATION ioctl and can propagate the hash data to the virtio-net packet. Signed-off-by: Yuri Benditovich <redacted> --- drivers/net/tun.c | 2 +- include/uapi/linux/if_tun.h | 1 + 2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 214feb0b16fb..b46aa8941a9d 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c@@ -88,7 +88,7 @@ static void tun_default_link_ksettings(struct net_device *dev, #define TUN_VNET_LE 0x80000000 #define TUN_VNET_BE 0x40000000 -#define TUN_FEATURES (IFF_NO_PI | IFF_ONE_QUEUE | IFF_VNET_HDR | \ +#define TUN_FEATURES (IFF_NO_PI | IFF_ONE_QUEUE | IFF_VNET_HDR | IFF_HASH |\ IFF_MULTI_QUEUE | IFF_NAPI | IFF_NAPI_FRAGS) #define GOODCOPY_LEN 128
diff --git a/include/uapi/linux/if_tun.h b/include/uapi/linux/if_tun.h
index 0fd43533da26..116b84ede3a0 100644
--- a/include/uapi/linux/if_tun.h
+++ b/include/uapi/linux/if_tun.h@@ -73,6 +73,7 @@ #define IFF_ONE_QUEUE 0x2000 #define IFF_VNET_HDR 0x4000 #define IFF_TUN_EXCL 0x8000 +#define IFF_HASH 0x0080 #define IFF_MULTI_QUEUE 0x0100 #define IFF_ATTACH_QUEUE 0x0200 #define IFF_DETACH_QUEUE 0x0400
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2.17.1