doc: clarify TSO Tx offload prerequisite
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Commit Message
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@dpdk.org
Signed-off-by: Jerin Jacob <jerin.jacob@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(-)
Comments
On 11/1/2018 8:46 AM, Jerin Jacob wrote:
> 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@dpdk.org
>
> Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
> ---
> Definition of PKT_TX_TCP_SEG
> https://git.dpdk.org/dpdk/tree/lib/librte_mbuf/rte_mbuf.h#n289
Acked-by: Ferruh Yigit <ferruh.yigit@intel.com>
On 11/1/2018 1:33 PM, Ferruh Yigit wrote:
> On 11/1/2018 8:46 AM, Jerin Jacob wrote:
>> 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@dpdk.org
>>
>> Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
>> ---
>> Definition of PKT_TX_TCP_SEG
>> https://git.dpdk.org/dpdk/tree/lib/librte_mbuf/rte_mbuf.h#n289
>
> Acked-by: Ferruh Yigit <ferruh.yigit@intel.com>
Applied to dpdk-next-net/master, thanks.
@@ -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``.