selftests/xsk: Fix for SEND_RECEIVE_UNALIGNED test

Fix test broken by shared umem test and framework enhancement commit.

Correct the current implementation of pkt_stream_replace_half() by
ensuring that nb_valid_entries are not set to half, as this is not true
for all the tests. Ensure that the expected value for valid_entries for
the SEND_RECEIVE_UNALIGNED test equals the total number of packets sent,
which is 4096.

Create a new function called pkt_stream_pkt_set() that allows for packet
modification to meet specific requirements while ensuring the accurate
maintenance of the valid packet count to prevent inconsistencies in packet
tracking.

Fixes: 6d198a89c004 ("selftests/xsk: Add a test for shared umem feature")
Reported-by: Maciej Fijalkowski <[email protected]>
Signed-off-by: Tushar Vyavahare <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
Reviewed-by: Maciej Fijalkowski <[email protected]>
Acked-by: Magnus Karlsson <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]

0 files changed, 0 insertions, 0 deletions