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modules/mqnic: Drop short frames

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Signed-off-by: Alex Forencich <alex@alexforencich.com>
This commit is contained in:
Alex Forencich 2023-08-23 17:50:20 -07:00
parent 6e67bd652e
commit 88166c1153
1 changed files with 9 additions and 2 deletions
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11
modules/mqnic/mqnic_rx.c
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@ -326,6 +326,14 @@ int mqnic_process_rx_cq(struct mqnic_cq *cq, int napi_budget)
ring_index = le16_to_cpu(cpl->index) & rx_ring->size_mask;
rx_info = &rx_ring->rx_info[ring_index];
page = rx_info->page;
len = min_t(u32, le16_to_cpu(cpl->len), rx_info->len);
if (len < ETH_HLEN) {
netdev_warn(priv->ndev, "%s: ring %d dropping short frame (length %d)",
__func__, rx_ring->index, len);
rx_ring->dropped_packets++;
goto rx_drop;
}
if (unlikely(!page)) {
netdev_err(priv->ndev, "%s: ring %d null page at index %d",
@ -359,8 +367,6 @@ int mqnic_process_rx_cq(struct mqnic_cq *cq, int napi_budget)
dma_unmap_len(rx_info, len), DMA_FROM_DEVICE);
rx_info->dma_addr = 0;
len = min_t(u32, le16_to_cpu(cpl->len), rx_info->len);
dma_sync_single_range_for_cpu(dev, rx_info->dma_addr, rx_info->page_offset,
rx_info->len, DMA_FROM_DEVICE);
@ -378,6 +384,7 @@ int mqnic_process_rx_cq(struct mqnic_cq *cq, int napi_budget)
rx_ring->packets++;
rx_ring->bytes += le16_to_cpu(cpl->len);
rx_drop:
done++;
cq_cons_ptr++;