On 2/10/2022 1:09 PM, Radu Nicolau wrote:
This reverts commit ff8b8bcd2ebe, which resulted in incorrect buffer size
being computed for TSO packets.

Fixes: ff8b8bcd2ebe ("net/iavf: fix segmentation offload condition")


Commit 'ff8b8bcd2ebe' was already fixing segmentation offload,
are we having the initial issue back when this patch reverted?
Is there a fix for that initial issue?

+Kevin, Luca,
Since this patch reverts a fix done after 21.11, is there a way
to stop that fix to be merged for 21.11.x?

Signed-off-by: Radu Nicolau <radu.nico...@intel.com>
---
  drivers/net/iavf/iavf_rxtx.c | 7 ++++---
  1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/net/iavf/iavf_rxtx.c b/drivers/net/iavf/iavf_rxtx.c
index b0fed1b992..ba272bb211 100644
--- a/drivers/net/iavf/iavf_rxtx.c
+++ b/drivers/net/iavf/iavf_rxtx.c
@@ -2464,9 +2464,10 @@ iavf_fill_data_desc(volatile struct iavf_tx_desc *desc,
        desc->buffer_addr = rte_mbuf_data_iova(m);
/* calculate data buffer size less set header lengths */
-       if (m->ol_flags & (RTE_MBUF_F_TX_TCP_SEG | RTE_MBUF_F_TX_UDP_SEG)) {
-               if (m->ol_flags & RTE_MBUF_F_TX_TUNNEL_MASK)
-                       hdrlen += m->outer_l3_len;
+       if ((m->ol_flags & RTE_MBUF_F_TX_TUNNEL_MASK) &&
+                       (m->ol_flags & (RTE_MBUF_F_TX_TCP_SEG |
+                                       RTE_MBUF_F_TX_UDP_SEG))) {
+               hdrlen += m->outer_l3_len;
                if (m->ol_flags & RTE_MBUF_F_TX_L4_MASK)
                        hdrlen += m->l3_len + m->l4_len;
                else

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