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net/virtio: fix segment length in mergeable packed Rx

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Head segment data_len field is wrongly summed with the length
of all the segments of the chain, whereas it should be the
length of the first segment only.

Fixes: a76290c8f1cf ("net/virtio: implement Rx path for packed queues")
Cc: stable@dpdk.org

Reported-by: Yaroslav Brustinov <ybrustin@cisco.com>
Reviewed-by: David Marchand <david.marchand@redhat.com>
Reviewed-by: Jens Freimann <jfreimann@redhat.com>
Reviewed-by: Tiwei Bie <tiwei.bie@intel.com>
Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
This commit is contained in:
Maxime Coquelin 2019-06-05 12:00:38 +02:00 committed by Ferruh Yigit
parent 366599450d
commit 3291bb21bb
1 changed files with 0 additions and 2 deletions
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2
drivers/net/virtio/virtio_rxtx.c
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@ -1870,7 +1870,6 @@ virtio_recv_mergeable_pkts_packed(void *rx_queue,
rxm->data_len = (uint16_t)(len[i]);
rx_pkts[nb_rx]->pkt_len += (uint32_t)(len[i]);
rx_pkts[nb_rx]->data_len += (uint16_t)(len[i]);
if (prev)
prev->next = rxm;
@ -1907,7 +1906,6 @@ virtio_recv_mergeable_pkts_packed(void *rx_queue,
prev->next = rxm;
prev = rxm;
rx_pkts[nb_rx]->pkt_len += len[extra_idx];
rx_pkts[nb_rx]->data_len += len[extra_idx];
extra_idx += 1;
}
seg_res -= rcv_cnt;