[dpdk-dev] [PATCH] doc: clarify TSO Tx offload prerequisite

[Jerin Jacob]

Based on the PKT_TX_TCP_SEG definition,
the application needs to update PKT_TX_IPV4 or PKT_TX_IPV6
based on IPV4 or IPV6 packet and PKT_TX_IP_CKSUM ol_flags
to enable Tx TSO offload.

Fixes: dad1ec72a377 ("doc: document NIC features")
Cc: stable at dpdk.org

Signed-off-by: Jerin Jacob <jerin.jacob at caviumnetworks.com>
---
Definition of PKT_TX_TCP_SEG
https://git.dpdk.org/dpdk/tree/lib/librte_mbuf/rte_mbuf.h#n289
---
 doc/guides/nics/features.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/doc/guides/nics/features.rst b/doc/guides/nics/features.rst
index 3fa5cb745..d3f904839 100644
--- a/doc/guides/nics/features.rst
+++ b/doc/guides/nics/features.rst
@@ -208,7 +208,7 @@ Supports TCP Segmentation Offloading.
 
 * **[uses]       rte_eth_txconf,rte_eth_txmode**: ``offloads:DEV_TX_OFFLOAD_TCP_TSO``.
 * **[uses]       rte_eth_desc_lim**: ``nb_seg_max``, ``nb_mtu_seg_max``.
-* **[uses]       mbuf**: ``mbuf.ol_flags:PKT_TX_TCP_SEG``.
+* **[uses]       mbuf**: ``mbuf.ol_flags:`` ``PKT_TX_TCP_SEG``, ``PKT_TX_IPV4``, ``PKT_TX_IPV6``, ``PKT_TX_IP_CKSUM``.
 * **[uses]       mbuf**: ``mbuf.tso_segsz``, ``mbuf.l2_len``, ``mbuf.l3_len``, ``mbuf.l4_len``.
 * **[implements] datapath**: ``TSO functionality``.
 * **[provides]   rte_eth_dev_info**: ``tx_offload_capa,tx_queue_offload_capa:DEV_TX_OFFLOAD_TCP_TSO,DEV_TX_OFFLOAD_UDP_TSO``.
-- 
2.19.1