mirror
/
linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
linux/net
History
Christian Ehrig e26aa600ba bpf: Add flag BPF_F_NO_TUNNEL_KEY to bpf_skb_set_tunnel_key() 
This patch allows to remove TUNNEL_KEY from the tunnel flags bitmap
when using bpf_skb_set_tunnel_key by providing a BPF_F_NO_TUNNEL_KEY
flag. On egress, the resulting tunnel header will not contain a tunnel
key if the protocol and implementation supports it.

At the moment bpf_tunnel_key wants a user to specify a numeric tunnel
key. This will wrap the inner packet into a tunnel header with the key
bit and value set accordingly. This is problematic when using a tunnel
protocol that supports optional tunnel keys and a receiving tunnel
device that is not expecting packets with the key bit set. The receiver
won't decapsulate and drop the packet.

RFC 2890 and RFC 2784 GRE tunnels are examples where this flag is
useful. It allows for generating packets, that can be decapsulated by
a GRE tunnel device not operating in collect metadata mode or not
expecting the key bit set.

Signed-off-by: Christian Ehrig <cehrig@cloudflare.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com>
Acked-by: Stanislav Fomichev <sdf@google.com>
Link: https://lore.kernel.org/bpf/20221218051734.31411-1-cehrig@cloudflare.com
 		2022-12-19 23:53:15 +01:00
..
6lowpan
…
9p iov_iter work; most of that is about getting rid of 2022-12-12 18:29:54 -08:00
802 Networking changes for 6.2. 2022-12-13 15:47:48 -08:00
8021q net: Remove the obsolte u64_stats_fetch_*_irq() users (net). 2022-10-28 20:13:54 -07:00
appletalk
…
atm net/atm: fix proc_mpc_write incorrect return value 2022-10-15 11:08:36 +01:00
ax25 ax25: af_ax25: Remove unnecessary (void*) conversions 2022-11-16 13:31:03 +00:00
batman-adv Networking changes for 6.2. 2022-12-13 15:47:48 -08:00
bluetooth Networking changes for 6.2. 2022-12-13 15:47:48 -08:00
bpf bpf-next-for-netdev 2022-12-12 11:27:42 -08:00
bpfilter
…
bridge bridge: mcast: Support replacement of MDB port group entries 2022-12-12 15:33:37 -08:00
caif net: caif: fix double disconnect client in chnl_net_open() 2022-11-14 10:51:13 +00:00
can Networking changes for 6.2. 2022-12-13 15:47:48 -08:00
ceph iov_iter work; most of that is about getting rid of 2022-12-12 18:29:54 -08:00
core bpf: Add flag BPF_F_NO_TUNNEL_KEY to bpf_skb_set_tunnel_key() 2022-12-19 23:53:15 +01:00
dcb net: dcb: move getapptrust to separate function 2022-11-15 15:27:43 +01:00
dccp Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-11-29 13:04:52 -08:00
dns_resolver
…
dsa Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-12-13 09:49:29 +01:00
ethernet net: ethernet: use sysfs_emit() to instead of scnprintf() 2022-12-07 20:02:44 -08:00
ethtool net_tstamp: add SOF_TIMESTAMPING_OPT_ID_TCP 2022-12-08 19:49:21 -08:00
hsr hsr: Use a single struct for self_node. 2022-12-01 20:26:22 -08:00
ieee802154 Merge tag 'ieee802154-for-net-next-2022-12-05' of git://git.kernel.org/pub/scm/linux/kernel/git/sschmidt/wpan-next 2022-12-07 17:33:26 -08:00
ife
…
ipv4 Networking changes for 6.2. 2022-12-13 15:47:48 -08:00
ipv6 Networking changes for 6.2. 2022-12-13 15:47:48 -08:00
iucv
…
kcm kcm: close race conditions on sk_receive_queue 2022-11-15 12:42:26 +01:00
key Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next 2022-11-29 20:50:51 -08:00
l2tp Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-11-29 13:04:52 -08:00
l3mdev
…
lapb
…
llc
…
mac80211 wireless-next patches for v6.2 2022-12-02 20:33:30 -08:00
mac802154 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-12-08 18:19:59 -08:00
mctp mctp: Fix an error handling path in mctp_init() 2022-11-09 19:26:08 -08:00
mpls net: Remove the obsolte u64_stats_fetch_*_irq() users (net). 2022-10-28 20:13:54 -07:00
mptcp Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-12-13 09:49:29 +01:00
ncsi net/ncsi: Silence runtime memcpy() false positive warning 2022-12-06 17:29:14 -08:00
netfilter Networking changes for 6.2. 2022-12-13 15:47:48 -08:00
netlabel genetlink: start to validate reserved header bytes 2022-08-29 12:47:15 +01:00
netlink Networking changes for 6.2. 2022-12-13 15:47:48 -08:00
netrom
…
nfc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-12-08 18:19:59 -08:00
nsh
…
openvswitch net: move the nat function to nf_nat_ovs for ovs and tc 2022-12-12 10:14:03 +00:00
packet Networking changes for 6.2. 2022-12-13 15:47:48 -08:00
phonet
…
psample genetlink: start to validate reserved header bytes 2022-08-29 12:47:15 +01:00
qrtr net: qrtr: start MHI channel after endpoit creation 2022-08-15 11:21:42 +01:00
rds rds: remove redundant variable total_payload_len 2022-11-04 10:09:50 +00:00
rfkill
…
rose rose: Fix NULL pointer dereference in rose_send_frame() 2022-11-02 11:57:30 +00:00
rxrpc rxrpc: Transmit ACKs at the point of generation 2022-12-01 13:36:43 +00:00
sched Networking changes for 6.2. 2022-12-13 15:47:48 -08:00
sctp Networking changes for 6.2. 2022-12-13 15:47:48 -08:00
smc use less confusing names for iov_iter direction initializers 2022-11-25 13:01:55 -05:00
strparser
…
sunrpc NFS client updates for Linux 6.2 2022-12-13 08:44:41 -08:00
switchdev
…
tipc iov_iter work; most of that is about getting rid of 2022-12-12 18:29:54 -08:00
tls Networking changes for 6.2. 2022-12-13 15:47:48 -08:00
unix af_unix: call proto_unregister() in the error path in af_unix_init() 2022-12-12 10:04:08 +00:00
vmw_vsock Networking changes for 6.2. 2022-12-13 15:47:48 -08:00
wireless wireless-next patches for v6.2 2022-12-02 20:33:30 -08:00
x25 net/x25: Fix skb leak in x25_lapb_receive_frame() 2022-11-15 20:22:19 -08:00
xdp bpf: Expand map key argument of bpf_redirect_map to u64 2022-11-15 09:00:27 -08:00
xfrm Networking changes for 6.2. 2022-12-13 15:47:48 -08:00
Kconfig Remove DECnet support from kernel 2022-08-22 14:26:30 +01:00
Kconfig.debug net: make NET_(DEV|NS)_REFCNT_TRACKER depend on NET 2022-09-20 14:23:56 -07:00
Makefile Remove DECnet support from kernel 2022-08-22 14:26:30 +01:00
compat.c use less confusing names for iov_iter direction initializers 2022-11-25 13:01:55 -05:00
devres.c
…
socket.c Networking changes for 6.2. 2022-12-13 15:47:48 -08:00
sysctl_net.c
…