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author | David S. Miller <davem@davemloft.net> | 2021-07-13 10:02:41 -0700 |
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committer | David S. Miller <davem@davemloft.net> | 2021-07-13 10:02:41 -0700 |
commit | 28efd208530c7690a275b18915960c26c5b4d9d5 (patch) | |
tree | 419aea1d7f617070210309d4e9b417c885d68c1a /net/caif/cfutill.c | |
parent | deb7178eb940e2c5caca1b1db084a69b2e59b4c9 (diff) | |
parent | d2a16bde77322fca6b6f36ebe19097a1c3c46f74 (diff) | |
download | linux-28efd208530c7690a275b18915960c26c5b4d9d5.tar.bz2 |
Merge branch 'sfc-tx-queues'
Íñigo Huguet says:
====================
sfc: Fix lack of XDP TX queues
A change introduced in commit e26ca4b53582 ("sfc: reduce the number of
requested xdp ev queues") created a bug in XDP_TX and XDP_REDIRECT
because it unintentionally reduced the number of XDP TX queues, letting
not enough queues to have one per CPU, which leaded to errors if XDP
TX/REDIRECT was done from a high numbered CPU.
This patchs make the following changes:
- Fix the bug mentioned above
- Revert commit 99ba0ea616aa ("sfc: adjust efx->xdp_tx_queue_count with
the real number of initialized queues") which intended to fix a related
problem, created by mentioned bug, but it's no longer necessary
- Add a new error log message if there are not enough resources to make
XDP_TX/REDIRECT work
V1 -> V2: keep the calculation of how many tx queues can handle a single
event queue, but apply the "max. tx queues per channel" upper limit.
V2 -> V3: WARN_ON if the number of initialized XDP TXQs differs from the
expected.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/caif/cfutill.c')
0 files changed, 0 insertions, 0 deletions