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Jakub Kicinski says: ==================== eth: fbnic: fix XDP_TX and XDP vs qstats Fix XDP_TX hangs and adjust the XDP statistics to match the definition of qstats. The three problems are somewhat distinct. XDP_TX hangs is a simple coding bug (patch 1). The accounting of XDP packets is all over the place. Fix it to obey qstat rules (packets seen by XDP always counted as Rx packets). Patch 2 fixes the basic accounting, patch 3 touches up saving the stats when rings are freed. Patch 6 corrects reporting of alloc_fail stats which prevented the pp_alloc_fail test from passing. Patches 4, 5, 7, 8, 9 add or fix related test cases. v2: - [patch 2] remove now unnecessary byte adjustment - [patch 8] use seen_fails more v1: https://lore.kernel.org/20251003233025.1157158-1-kuba@kernel.org Testing on fbnic below: $ ./tools/testing/selftests/drivers/net/hw/pp_alloc_fail.py TAP version 13 1..1 fbnic-err: bad MMIO read address 0x80074 fbnic-err: bad MMIO read address 0x80074 # Seen: pkts:20605 fails:40 (pass thrs:12) # ethtool -G change retval: success ok 1 pp_alloc_fail.test_pp_alloc # Totals: pass:1 fail:0 xfail:0 xpass:0 skip:0 error:0 $ ./tools/testing/selftests/drivers/net/xdp.py TAP version 13 1..13 ok 1 xdp.test_xdp_native_pass_sb ok 2 xdp.test_xdp_native_pass_mb ok 3 xdp.test_xdp_native_drop_sb ok 4 xdp.test_xdp_native_drop_mb ok 5 xdp.test_xdp_native_tx_sb ok 6 xdp.test_xdp_native_tx_mb # Failed run: pkt_sz 2048, offset 1. Last successful run: pkt_sz 1024, offset 256. Reason: Adjustment failed ok 7 xdp.test_xdp_native_adjst_tail_grow_data ok 8 xdp.test_xdp_native_adjst_tail_shrnk_data # Failed run: pkt_sz 512, offset -256. Last successful run: pkt_sz 512, offset -128. Reason: Adjustment failed ok 9 xdp.test_xdp_native_adjst_head_grow_data # Failed run: pkt_sz (2048) > HDS threshold (1536) and offset 64 > 48 ok 10 xdp.test_xdp_native_adjst_head_shrnk_data ok 11 xdp.test_xdp_native_qstats_pass ok 12 xdp.test_xdp_native_qstats_drop ok 13 xdp.test_xdp_native_qstats_tx # Totals: pass:13 fail:0 xfail:0 xpass:0 skip:0 error:0 ==================== Link: https://patch.msgid.link/20251007232653.2099376-1-kuba@kernel.org Signed-off-by: Paolo Abeni <pabeni@redhat.com> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.