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selftests/xsk: Add packet stream replacement function

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Add pkt_stream_replace_ifobject function to replace the packet stream for
a given ifobject.

Enable separate TX and RX packet replacement, allowing RX side packet
length adjustments using bpf_xdp_adjust_tail() in the upcoming patch.
Currently, pkt_stream_replace() works on both TX and RX packet streams,
and this new function provides the ability to modify one of them.

Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Signed-off-by: Tushar Vyavahare <tushar.vyavahare@intel.com>
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://patch.msgid.link/20250410033116.173617-2-tushar.vyavahare@intel.com
This commit is contained in:
Tushar Vyavahare 2025-04-10 03:31:15 +00:00 committed by Martin KaFai Lau
parent 0f681b0ecd
commit 3e730fe2af
1 changed files with 7 additions and 6 deletions
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13
tools/testing/selftests/bpf/xskxceiver.c
View File

@ -757,14 +757,15 @@ static struct pkt_stream *pkt_stream_clone(struct pkt_stream *pkt_stream)
return pkt_stream_generate(pkt_stream->nb_pkts, pkt_stream->pkts[0].len);
}
static void pkt_stream_replace_ifobject(struct ifobject *ifobj, u32 nb_pkts, u32 pkt_len)
{
ifobj->xsk->pkt_stream = pkt_stream_generate(nb_pkts, pkt_len);
}
static void pkt_stream_replace(struct test_spec *test, u32 nb_pkts, u32 pkt_len)
{
struct pkt_stream *pkt_stream;
pkt_stream = pkt_stream_generate(nb_pkts, pkt_len);
test->ifobj_tx->xsk->pkt_stream = pkt_stream;
pkt_stream = pkt_stream_generate(nb_pkts, pkt_len);
test->ifobj_rx->xsk->pkt_stream = pkt_stream;
pkt_stream_replace_ifobject(test->ifobj_tx, nb_pkts, pkt_len);
pkt_stream_replace_ifobject(test->ifobj_rx, nb_pkts, pkt_len);
}
static void __pkt_stream_replace_half(struct ifobject *ifobj, u32 pkt_len,