Stanislav Fomichev
5ef44b3cb4
xsk: Bring back busy polling support
...
Commit 86e25f40aa ("net: napi: Add napi_config") moved napi->napi_id
assignment to a later point in time (napi_hash_add_with_id). This breaks
__xdp_rxq_info_reg which copies napi_id at an earlier time and now
stores 0 napi_id. It also makes sk_mark_napi_id_once_xdp and
__sk_mark_napi_id_once useless because they now work against 0 napi_id.
Since sk_busy_loop requires valid napi_id to busy-poll on, there is no way
to busy-poll AF_XDP sockets anymore.
Bring back the ability to busy-poll on XSK by resolving socket's napi_id
at bind time. This relies on relatively recent netif_queue_set_napi,
but (assume) at this point most popular drivers should have been converted.
This also removes per-tx/rx cycles which used to check and/or set
the napi_id value.
Confirmed by running a busy-polling AF_XDP socket
(github.com/fomichev/xskrtt) on mlx5 and looking at BusyPollRxPackets
from /proc/net/netstat.
Fixes: 86e25f40aa ("net: napi: Add napi_config")
Signed-off-by: Stanislav Fomichev <sdf@fomichev.me >
Acked-by: Magnus Karlsson <magnus.karlsson@intel.com >
Reviewed-by: Jakub Kicinski <kuba@kernel.org >
Link: https://patch.msgid.link/20250109003436.2829560-1-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org >
2025-01-10 18:07:56 -08:00
..
2024-05-01 18:07:37 +01:00
2024-12-12 09:24:35 -05:00
2024-10-08 15:33:49 -07:00
2024-08-26 09:37:22 -07:00
2024-09-09 13:15:37 -07:00
2024-10-09 13:42:04 +01:00
2024-12-25 00:27:49 +01:00
2024-10-29 11:56:18 +01:00
2024-11-07 10:21:58 +01:00
2024-09-11 20:44:31 -07:00
2024-10-24 16:03:40 +02:00
2024-08-26 09:37:23 -07:00
2024-01-02 12:41:16 +00:00
2024-10-23 11:43:47 +02:00
2024-08-26 09:37:23 -07:00
2023-12-24 15:22:50 +00:00
2024-06-25 11:10:18 +02:00
2024-08-15 17:18:52 -07:00
2022-07-22 12:53:22 +01:00
2023-03-21 21:32:18 -07:00
2024-05-14 10:53:19 -07:00
2022-08-09 22:14:02 -07:00
2021-12-13 12:34:09 +00:00
2024-08-26 09:37:22 -07:00
2024-08-26 09:37:22 -07:00
2024-11-14 11:16:28 +01:00
2024-08-27 13:11:37 -07:00
2021-03-26 17:43:55 +01:00
2025-01-10 18:07:56 -08:00
2024-10-02 17:23:23 -04:00
2022-11-16 11:31:47 +02:00
2024-10-31 18:10:07 -07:00
2024-03-06 21:01:26 +01:00
2024-10-30 15:29:59 +01:00
2024-10-02 17:23:23 -04:00
2021-12-22 15:03:47 -08:00
2022-07-22 12:53:22 +01:00
2023-07-14 20:39:29 -07:00
2022-07-24 18:39:17 -06:00
2023-07-27 17:17:32 -07:00
2022-07-22 12:53:22 +01:00
2023-01-20 09:33:22 +00:00
2024-10-29 16:52:57 -07:00
2024-11-12 11:24:51 +01:00
2023-08-14 08:01:06 +01:00
2023-10-24 13:08:14 -07:00
2024-10-07 16:23:10 -07:00
2024-05-08 10:35:09 +01:00
2024-08-26 09:37:23 -07:00
2024-08-20 15:22:17 -07:00
2024-05-29 17:34:49 -07:00
2024-08-26 09:37:23 -07:00
2024-11-13 18:49:50 -08:00
2024-08-26 09:37:23 -07:00
2022-07-22 12:53:22 +01:00
2024-04-01 21:27:08 -07:00
2022-07-22 12:53:22 +01:00
2021-12-06 16:06:02 -08:00
2024-10-11 15:35:05 -07:00
2024-10-11 15:35:05 -07:00
2022-07-28 22:21:54 -07:00
2024-07-15 09:14:39 -07:00
2024-10-30 17:33:53 -07:00
2023-11-02 09:31:02 +01:00
2023-04-12 16:40:39 -07:00
2022-12-01 15:09:10 +01:00
2023-08-08 15:58:23 -07:00
2022-07-22 12:53:22 +01:00
2021-10-18 12:54:41 +01:00
2024-10-21 09:14:18 +02:00
2022-10-31 10:43:04 +00:00
2024-04-01 10:49:28 +01:00
2024-05-14 10:49:50 -07:00
2023-06-10 00:11:41 -07:00
2024-05-07 01:35:55 +02:00
2022-07-22 12:53:22 +01:00
2023-07-28 14:07:59 -07:00
2024-04-30 18:46:52 -07:00
2024-08-26 09:37:23 -07:00
2021-06-28 14:29:45 -07:00
2024-05-08 10:35:09 +01:00
2024-10-25 10:44:41 +01:00
2023-11-20 11:43:03 +01:00
2024-02-26 18:40:34 -08:00
2022-07-22 12:53:22 +01:00
2024-08-05 16:27:26 -07:00
2024-05-13 18:19:09 -06:00
2025-01-04 08:17:23 -08:00
2022-02-07 20:12:45 -08:00
2021-10-15 11:33:08 +01:00
2024-05-23 14:14:23 -07:00
2024-08-05 16:22:45 -07:00
2024-10-14 17:39:36 -07:00
2024-11-30 13:00:52 -08:00
2024-02-28 11:19:41 +00:00
2021-11-16 13:16:54 +00:00
2024-10-11 15:35:05 -07:00
2024-07-14 07:34:16 -07:00
2024-04-01 10:49:28 +01:00
2024-11-12 11:24:50 +01:00
2024-10-31 18:10:07 -07:00
2023-04-22 01:39:41 +02:00
2024-10-23 13:17:35 +02:00
2022-09-29 07:18:00 +02:00
2022-07-22 12:53:22 +01:00
2022-10-31 20:14:27 -07:00
2024-08-05 16:27:26 -07:00
2024-08-26 09:37:22 -07:00
2024-10-09 08:53:01 +02:00
2024-08-19 18:36:12 -07:00
2024-10-10 11:57:34 +02:00
2024-12-06 17:43:08 -08:00
2023-08-04 15:33:17 -07:00
2023-08-04 15:33:17 -07:00
2024-07-15 08:51:01 -07:00
2023-07-20 10:46:28 +02:00
2021-10-13 09:40:46 -07:00
2024-08-26 09:37:23 -07:00
2022-07-22 12:53:22 +01:00
2022-07-22 12:53:22 +01:00
2024-07-15 08:51:19 -07:00
2021-11-07 19:25:29 +00:00
2023-08-18 16:05:26 +02:00
2024-12-03 11:28:59 +01:00
2024-10-02 17:23:23 -04:00
2024-04-25 08:20:54 -07:00
2024-11-09 09:04:54 -08:00
2024-11-09 09:04:54 -08:00
2021-03-26 15:14:56 -07:00
2022-07-22 12:53:22 +01:00
2020-05-29 21:20:20 -07:00
2024-09-11 15:57:50 -07:00
2022-11-18 12:14:55 +00:00
2022-07-22 12:53:22 +01:00
2024-08-12 17:23:57 -07:00
2024-11-09 13:22:57 -08:00
2024-11-09 13:22:57 -08:00
2024-11-30 13:41:50 -08:00
2024-12-06 17:45:08 -08:00
2024-10-10 08:30:22 -07:00
2021-12-10 06:38:26 -08:00
2024-06-01 15:11:52 -07:00
2024-09-12 21:00:26 -07:00
2022-07-22 12:53:22 +01:00
2023-11-20 10:15:16 -08:00
2024-11-21 08:28:08 -08:00
2024-11-11 10:32:06 -08:00
2024-09-11 20:44:31 -07:00
2022-07-22 12:53:22 +01:00
2024-08-12 17:50:34 -07:00
2024-08-30 22:30:55 +02:00
2023-07-14 20:39:29 -07:00
2023-08-04 15:33:50 -07:00
2024-04-01 10:49:28 +01:00
2023-07-14 20:39:30 -07:00
2023-06-02 09:55:22 +01:00
2024-10-30 17:33:53 -07:00
2024-02-02 10:57:55 -08:00
2022-07-22 12:53:22 +01:00
2024-04-30 18:46:52 -07:00
2024-03-07 21:12:43 -08:00
2024-07-11 18:11:31 -07:00
2022-07-22 12:53:22 +01:00
2023-04-06 12:01:20 -07:00
2023-03-17 08:56:37 +00:00
2024-08-26 09:37:23 -07:00
2024-08-26 09:37:23 -07:00
2024-06-06 15:18:04 +02:00
2022-08-01 11:59:23 -07:00
2024-11-12 11:24:51 +01:00
2023-06-19 11:32:58 -07:00
2024-04-01 11:28:32 +01:00
2023-07-14 20:39:30 -07:00
2024-08-07 10:24:46 +01:00
2024-11-11 17:26:52 -08:00
2024-10-08 15:38:56 -07:00
2024-05-10 18:52:45 -07:00
2022-07-22 12:53:22 +01:00
2024-05-30 18:29:38 -07:00
2024-06-24 16:41:23 -07:00
2024-05-30 18:29:38 -07:00
2021-04-28 14:06:45 -07:00
2024-04-30 13:24:48 +02:00
2024-08-02 17:16:59 -07:00
2024-12-20 17:59:47 +01:00
2023-10-04 11:49:20 -07:00
2022-07-22 12:53:22 +01:00
2022-07-18 11:24:10 +01:00
2024-02-16 09:36:37 +00:00
2024-02-14 10:49:37 +01:00
2024-11-03 12:10:11 -08:00
2023-12-04 14:45:26 -08:00
2024-10-30 13:26:55 +00:00
2024-07-08 14:07:31 -07:00
2024-05-09 20:25:55 -07:00
2023-07-28 14:07:59 -07:00
2024-11-06 11:08:56 -08:00
2023-08-01 15:06:27 -07:00
2022-12-12 15:04:39 -08:00
2022-07-22 12:53:22 +01:00
2024-04-01 10:49:28 +01:00
2024-11-18 11:56:21 +00:00
2023-09-14 16:16:36 +02:00
2023-11-16 22:33:31 +00:00
2024-08-26 09:37:23 -07:00
2022-07-22 12:53:22 +01:00
2025-01-10 18:07:56 -08:00
2024-07-02 15:26:57 +02:00
2025-01-10 18:07:56 -08:00
2024-11-06 12:42:51 +01:00
2024-10-14 17:23:30 +02:00