Kernel/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-12-28 16:56:26 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

netdev: fix repeated netlink messages in queue dump

Browse Source 
The context is supposed to record the next queue to dump,
not last dumped. If the dump doesn't fit we will restart
from the already-dumped queue, duplicating the message.

Before this fix and with the selftest improvements later
in this series we see:

  # ./run_kselftest.sh -t drivers/net:queues.py
  timeout set to 45
  selftests: drivers/net: queues.py
  KTAP version 1
  1..2
  # Check| At /root/ksft-net-drv/drivers/net/./queues.py, line 32, in get_queues:
  # Check|     ksft_eq(queues, expected)
  # Check failed 102 != 100
  # Check| At /root/ksft-net-drv/drivers/net/./queues.py, line 32, in get_queues:
  # Check|     ksft_eq(queues, expected)
  # Check failed 101 != 100
  not ok 1 queues.get_queues
  ok 2 queues.addremove_queues
  # Totals: pass:1 fail:1 xfail:0 xpass:0 skip:0 error:0
  not ok 1 selftests: drivers/net: queues.py # exit=1

With the fix:

  # ./ksft-net-drv/run_kselftest.sh -t drivers/net:queues.py
  timeout set to 45
  selftests: drivers/net: queues.py
  KTAP version 1
  1..2
  ok 1 queues.get_queues
  ok 2 queues.addremove_queues
  # Totals: pass:2 fail:0 xfail:0 xpass:0 skip:0 error:0

Fixes: 6b6171db7f ("netdev-genl: Add netlink framework functions for queue")
Reviewed-by: Joe Damato <jdamato@fastly.com>
Link: https://patch.msgid.link/20241213152244.3080955-2-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jakub Kicinski 2024-12-13 07:22:40 -08:00
parent 922b4b955a
commit b1f3a2f5a7
1 changed files with 4 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
net/core/netdev-genl.c
View File

@ -488,24 +488,21 @@ netdev_nl_queue_dump_one(struct net_device *netdev, struct sk_buff *rsp,
struct netdev_nl_dump_ctx *ctx)
{
int err = 0;
int i;
if (!(netdev->flags & IFF_UP))
return err;
for (i = ctx->rxq_idx; i < netdev->real_num_rx_queues;) {
err = netdev_nl_queue_fill_one(rsp, netdev, i,
for (; ctx->rxq_idx < netdev->real_num_rx_queues; ctx->rxq_idx++) {
err = netdev_nl_queue_fill_one(rsp, netdev, ctx->rxq_idx,
NETDEV_QUEUE_TYPE_RX, info);
if (err)
return err;
ctx->rxq_idx = i++;
}
for (i = ctx->txq_idx; i < netdev->real_num_tx_queues;) {
err = netdev_nl_queue_fill_one(rsp, netdev, i,
for (; ctx->txq_idx < netdev->real_num_tx_queues; ctx->txq_idx++) {
err = netdev_nl_queue_fill_one(rsp, netdev, ctx->txq_idx,
NETDEV_QUEUE_TYPE_TX, info);
if (err)
return err;
ctx->txq_idx = i++;
}
return err;