Daniel Borkmann 5293efe62d
bpf: add bpf_skb_change_tail helper ...
This work adds a bpf_skb_change_tail() helper for tc BPF programs. The
basic idea is to expand or shrink the skb in a controlled manner. The
eBPF program can then rewrite the rest via helpers like bpf_skb_store_bytes(),
bpf_lX_csum_replace() and others rather than passing a raw buffer for
writing here.
bpf_skb_change_tail() is really a slow path helper and intended for
replies with f.e. ICMP control messages. Concept is similar to other
helpers like bpf_skb_change_proto() helper to keep the helper without
protocol specifics and let the BPF program mangle the remaining parts.
A flags field has been added and is reserved for now should we extend
the helper in future.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net >
Acked-by: Alexei Starovoitov <ast@kernel.org >
Signed-off-by: David S. Miller <davem@davemloft.net >
2016-08-18 23:38:16 -07:00
2014-10-20 10:30:15 +08:00
2016-03-17 15:09:34 -07:00
2016-06-17 15:39:46 +02:00
2015-11-19 08:18:38 -02:00
2014-09-23 23:15:46 -07:00
2015-06-23 02:40:03 +02:00
2016-05-29 20:03:21 +01:00
2015-10-26 16:00:00 +01:00
2016-08-08 09:35:05 +02:00
2015-11-23 17:54:38 +01:00
2015-11-23 17:54:38 +01:00
2015-11-23 17:54:38 +01:00
2015-11-23 17:54:38 +01:00
2015-04-21 16:16:02 -04:00
2016-01-06 11:39:53 +11:00
2016-08-18 23:13:14 -07:00
2016-04-19 04:33:15 +09:00
2015-12-10 12:33:23 +01:00
2015-04-02 18:10:35 -03:00
2015-10-05 03:16:46 -07:00
2016-06-27 15:02:46 -04:00
2016-03-15 16:55:16 -07:00
2016-03-15 16:55:16 -07:00
2016-08-09 07:54:43 +02:00
2015-09-29 13:37:04 -07:00
2014-10-14 16:06:45 -04:00
2016-08-18 23:38:16 -07:00
2014-07-01 10:48:05 -06:00
2016-04-28 11:06:41 +02:00
2016-07-26 13:52:25 +02:00
2015-05-06 08:03:19 +02:00
2016-08-02 17:31:41 -04:00
2014-03-20 14:55:18 +01:00
2016-05-03 14:59:30 -07:00
2016-06-23 18:29:56 +08:00
2015-06-23 07:00:41 -07:00
2016-07-02 14:40:40 -04:00
2015-08-25 14:41:50 -05:00
2014-11-19 14:48:02 -06:00
2016-07-20 23:49:49 -04:00
2016-02-12 16:01:32 +01:00
2016-02-08 11:21:50 +11:00
2016-07-20 12:37:39 -07:00
2016-08-05 09:00:54 -04:00
2014-08-05 16:35:54 -07:00
2016-06-27 04:10:41 -04:00
2016-01-20 17:09:18 -08:00
2015-03-25 15:07:05 +11:00
2014-08-08 15:57:31 -07:00
2016-06-08 11:36:02 -07:00
2015-04-16 14:08:49 -04:00
2015-04-12 21:25:13 -04:00
2016-05-23 11:18:01 -07:00
2016-06-30 13:10:49 +02:00
2016-04-26 12:00:49 -04:00
2016-02-11 09:53:19 -05:00
2015-12-14 12:19:37 -06:00
2016-06-15 09:29:17 +02:00
2015-07-23 17:48:43 -07:00
2016-06-07 16:25:49 -07:00
2015-12-20 15:27:12 +02:00
2015-12-14 19:12:21 -08:00
2015-10-23 23:26:43 +02:00
2016-06-17 13:24:05 +02:00
2014-07-09 16:41:36 -07:00
2016-06-18 22:11:39 -07:00
2015-03-23 22:12:09 -04:00
2014-12-05 23:56:55 +08:00
2015-09-23 08:44:22 +02:00
2016-08-18 23:18:42 -07:00
2016-07-19 20:49:16 -07:00
2014-04-27 19:08:06 -04:00
2016-07-19 21:46:32 -07:00
2016-07-25 10:55:39 -07:00
2015-08-17 14:22:48 -07:00
2015-06-01 15:48:56 +02:00
2016-08-15 10:55:53 -07:00
2016-05-09 21:29:31 -04:00
2016-04-26 01:27:07 -04:00
2016-06-27 15:02:51 -04:00
2015-06-29 18:56:21 -07:00
2016-06-28 05:25:04 -04:00
2016-06-29 09:51:03 -07:00
2016-06-18 10:32:28 -07:00
2016-04-25 15:09:11 -04:00
2016-02-11 04:27:35 -05:00
2015-05-25 13:25:35 -04:00
2016-04-26 11:47:41 -04:00
2016-08-06 09:20:13 -04:00
2016-03-09 16:36:14 -05:00
2014-12-02 13:52:53 -07:00
2016-03-22 15:36:02 -07:00
2015-09-10 13:29:01 -07:00
2016-03-04 16:10:36 -05:00
2016-06-27 16:31:25 +01:00
2016-04-12 19:54:58 +01:00
2015-06-03 11:32:07 +03:00
2014-05-30 21:01:11 +02:00
2016-08-04 13:59:56 +02:00
2016-04-25 15:09:10 -04:00
2016-05-20 19:57:22 -04:00
2016-01-12 08:21:18 -07:00
2016-07-11 10:49:52 -03:00
2015-09-23 11:01:16 -06:00
2016-04-23 20:13:24 -04:00
2016-07-26 16:19:19 -07:00
2015-04-21 09:44:55 -03:00
2016-06-28 12:06:20 -03:00
2015-08-03 17:30:00 -07:00
2015-09-11 15:21:34 -07:00
2014-08-08 15:57:31 -07:00
2015-02-12 18:54:08 -08:00
2015-10-04 12:54:54 +01:00
2016-08-12 16:57:20 -07:00
2015-07-21 10:39:05 -07:00
2015-08-03 22:35:00 -07:00
2016-03-04 16:10:36 -05:00
2015-11-23 15:06:38 -05:00
2015-01-20 13:51:06 +01:00
2014-12-13 12:42:52 -08:00
2015-05-05 13:40:44 -06:00
2016-06-20 11:19:34 -07:00
2016-04-23 20:13:24 -04:00
2015-01-19 14:21:18 -05:00
2016-04-04 15:50:30 -04:00
2016-03-13 21:54:44 -04:00
2014-07-15 16:12:01 -07:00
2015-11-23 17:54:38 +01:00
2015-06-18 21:14:31 +02:00
2016-06-16 14:00:50 -07:00
2016-02-18 11:42:18 -05:00
2015-10-27 03:55:10 +01:00
2015-08-27 19:44:53 -04:00
2015-04-23 15:16:14 -04:00
2015-11-23 21:53:08 -05:00
2015-07-20 14:58:46 -04:00
2016-08-02 19:35:21 -04:00
2016-08-02 19:35:21 -04:00
2016-07-06 15:04:52 +02:00
2016-05-17 17:14:21 -06:00
2016-06-22 16:34:39 -04:00
2016-05-03 10:39:24 -05:00
2016-05-30 12:41:44 -03:00
2016-08-18 23:13:14 -07:00
2016-05-08 23:49:38 -04:00
2015-10-21 14:46:56 -06:00
2015-09-04 16:54:41 -07:00
2015-10-02 14:35:17 +01:00
2016-03-03 14:23:43 -08:00
2015-10-27 19:55:13 -07:00
2016-05-08 23:46:14 -04:00
2016-04-26 12:00:48 -04:00
2014-08-05 16:41:22 -04:00
2015-05-31 21:47:23 -07:00
2016-02-24 09:04:25 +01:00
2016-08-02 19:35:31 -04:00
2016-05-05 17:38:53 -07:00
2016-04-26 12:00:49 -04:00
2016-02-16 13:04:58 -05:00
2015-10-04 12:54:54 +01:00
2015-10-12 14:20:06 +01:00
2016-08-08 12:51:58 -07:00
2014-07-18 12:13:40 -07:00
2015-09-04 16:54:41 -07:00
2014-12-13 12:42:52 -08:00
2016-05-20 20:57:27 -07:00
2015-05-20 09:01:20 -07:00
2015-12-13 19:59:48 -08:00
2016-07-12 13:42:10 -03:00
2014-06-06 16:08:14 -07:00
2016-05-04 08:34:14 +02:00
2014-08-21 15:25:11 -05:00
2015-07-21 22:36:33 -07:00
2016-04-04 22:11:20 -04:00
2016-01-05 16:44:06 -05:00
2016-03-30 12:50:17 +02:00
2015-10-04 20:28:58 +01:00
2016-05-05 17:38:53 -07:00
2016-04-29 17:37:10 -07:00
2016-08-02 17:31:41 -04:00
2016-03-10 21:49:09 -08:00
2016-04-23 20:13:24 -04:00
2016-06-30 08:15:31 -04:00
2014-12-09 14:10:41 +08:00
2015-02-09 13:20:47 -08:00
2016-08-18 23:36:07 -07:00
2016-07-26 14:26:42 -07:00
2015-07-24 14:15:10 -07:00
2016-04-30 09:26:55 -07:00
2015-06-11 23:37:37 +02:00
2016-05-10 12:25:04 -04:00
2014-08-25 03:28:08 -05:00
2015-12-18 17:48:51 -08:00
2016-03-05 12:05:01 -08:00
2014-08-25 10:40:06 -07:00
2015-10-01 21:42:35 -04:00
2015-10-27 18:55:31 -07:00
2016-05-20 17:58:30 -07:00
2016-02-01 08:47:05 -02:00
2016-02-19 08:10:35 -02:00
2016-04-25 10:19:56 -03:00
2015-06-05 11:45:45 -03:00
2015-03-23 11:44:35 -07:00
2016-02-22 16:10:09 -07:00
2016-08-02 16:53:54 +03:00
2016-06-28 11:54:52 -03:00
2016-03-17 15:09:34 -07:00
2016-03-02 17:01:59 +02:00
2016-08-01 21:44:52 +03:00
2014-12-09 12:06:32 +02:00
2015-12-10 12:33:23 +01:00
2016-08-02 02:57:29 +03:00
2015-03-29 12:13:52 +10:30
2016-06-10 23:03:55 -07:00
2015-07-07 14:27:05 +03:00
2015-07-07 14:27:04 +03:00
2015-03-13 15:55:43 +10:30
2014-12-09 12:05:24 +02:00
2016-08-09 13:42:38 +03:00
2016-04-30 09:26:55 -07:00
2016-06-25 17:26:35 +03:00
2014-10-02 14:23:14 -04:00
2016-06-09 10:14:39 +02:00
2014-08-29 16:28:16 -07:00
2016-04-23 20:13:25 -04:00
2015-04-03 01:04:18 -03:00
5293efe62d