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| author | Magnus Karlsson <magnus.karlsson@intel.com> | 2021-05-06 14:43:49 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-06-03 09:00:51 +0200 |
| commit | bc924bbccc50f28d9b9dc43dd747a43044e0130f (patch) | |
| tree | 0cf63f5d568feab30e69ffe65b2f42510ce49d48 /samples | |
| parent | 02ce4c943e2ed7660786d3618afadf27b61b0758 (diff) | |
| download | linux-stable-bc924bbccc50f28d9b9dc43dd747a43044e0130f.tar.gz linux-stable-bc924bbccc50f28d9b9dc43dd747a43044e0130f.tar.bz2 linux-stable-bc924bbccc50f28d9b9dc43dd747a43044e0130f.zip | |
samples/bpf: Consider frame size in tx_only of xdpsock sample
commit 3b80d106e110d39d3f678954d3b55078669cf07e upstream.
Fix the tx_only micro-benchmark in xdpsock to take frame size into
consideration. It was hardcoded to the default value of frame_size
which is 4K. Changing this on the command line to 2K made half of the
packets illegal as they were outside the umem and were therefore
discarded by the kernel.
Fixes: 46738f73ea4f ("samples/bpf: add use of need_wakeup flag in xdpsock")
Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Link: https://lore.kernel.org/bpf/20210506124349.6666-1-magnus.karlsson@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'samples')
| -rw-r--r-- | samples/bpf/xdpsock_user.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/samples/bpf/xdpsock_user.c b/samples/bpf/xdpsock_user.c index 3edae9018893..2e4508a6cb3a 100644 --- a/samples/bpf/xdpsock_user.c +++ b/samples/bpf/xdpsock_user.c @@ -1257,7 +1257,7 @@ static void tx_only(struct xsk_socket_info *xsk, u32 *frame_nb, int batch_size) for (i = 0; i < batch_size; i++) { struct xdp_desc *tx_desc = xsk_ring_prod__tx_desc(&xsk->tx, idx + i); - tx_desc->addr = (*frame_nb + i) << XSK_UMEM__DEFAULT_FRAME_SHIFT; + tx_desc->addr = (*frame_nb + i) * opt_xsk_frame_size; tx_desc->len = PKT_SIZE; } |