linux/net/core
Petar Penkov e3da08d057 bpf: allow BPF read access to qdisc pkt_len
The pkt_len field in qdisc_skb_cb stores the skb length as it will
appear on the wire after segmentation. For byte accounting, this value
is more accurate than skb->len. It is computed on entry to the TC
layer, so only valid there.

Allow read access to this field from BPF tc classifier and action
programs. The implementation is analogous to tc_classid, aside from
restricting to read access.

To distinguish it from skb->len and self-describe export as wire_len.

Changes v1->v2
  - Rename pkt_len to wire_len

Signed-off-by: Petar Penkov <ppenkov@google.com>
Signed-off-by: Vlad Dumitrescu <vladum@google.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-12-03 21:37:51 +01:00
..
datagram.c net: dump more useful information in netdev_rx_csum_fault() 2018-11-15 11:37:04 -08:00
dev.c net: explain __skb_checksum_complete() with comments 2018-11-29 13:47:16 -08:00
dev_addr_lists.c net: core: dev_addr_lists: add auxiliary func to handle reference address updates 2018-11-08 20:30:57 -08:00
dev_ioctl.c
devlink.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-10-12 21:38:46 -07:00
drop_monitor.c
dst.c
dst_cache.c
ethtool.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-10-19 11:03:06 -07:00
failover.c
fib_notifier.c
fib_rules.c net/fib_rules: Update fib_nl_dumprule for strict data checking 2018-10-08 10:39:05 -07:00
filter.c bpf: allow BPF read access to qdisc pkt_len 2018-12-03 21:37:51 +01:00
flow_dissector.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-11-11 17:57:54 -08:00
gen_estimator.c
gen_stats.c
gro_cells.c
hwbm.c
link_watch.c
lwt_bpf.c
lwtunnel.c
Makefile bpf, sockmap: convert to generic sk_msg interface 2018-10-15 12:23:19 -07:00
neighbour.c net/neigh: fix NULL deref in pneigh_dump_table() 2018-10-26 16:03:51 -07:00
net-procfs.c
net-sysfs.c
net-sysfs.h
net-traces.c
net_namespace.c netns: enable to dump full nsid translation table 2018-11-27 16:20:20 -08:00
netclassid_cgroup.c cgroup, netclassid: add a preemption point to write_classid 2018-10-23 12:58:17 -07:00
netevent.c
netpoll.c net: core: netpoll: Enable netconsole IPv6 link local address 2018-11-05 17:07:10 -08:00
netprio_cgroup.c
page_pool.c
pktgen.c
ptp_classifier.c
request_sock.c
rtnetlink.c net: bridge: add support for user-controlled bool options 2018-11-27 15:04:15 -08:00
scm.c
secure_seq.c
skbuff.c net: explain __skb_checksum_complete() with comments 2018-11-29 13:47:16 -08:00
skmsg.c tls: convert to generic sk_msg interface 2018-10-15 12:23:19 -07:00
sock.c sock: Reset dst when changing sk_mark via setsockopt 2018-11-08 19:36:13 -08:00
sock_diag.c
sock_map.c bpf: skmsg, fix psock create on existing kcm/tls port 2018-10-20 00:40:45 +02:00
sock_reuseport.c sctp: add sock_reuseport for the sock in __sctp_hash_endpoint 2018-11-12 09:09:51 -08:00
stream.c
sysctl_net_core.c bpf: add bpf_jit_limit knob to restrict unpriv allocations 2018-10-25 17:11:42 -07:00
timestamping.c
tso.c
utils.c
xdp.c