From 425f09300ea20ee95730b0c9cb1f95d0dc588541 Mon Sep 17 00:00:00 2001 From: Jerin Jacob Date: Fri, 5 Oct 2018 10:16:05 +0530 Subject: [PATCH] doc: clarify L4 Tx checksum prerequisite Based on PKT_TX_[TCP|UDP|SCTP]_CKSUM definition the user needs to fill l2_len and l3_len mbuf fields before issuing HW Tx checksum request. Fixes: dad1ec72a377 ("doc: document NIC features") Cc: stable@dpdk.org Signed-off-by: Jerin Jacob Acked-by: Andrew Rybchenko --- doc/guides/nics/features.rst | 1 + 1 file changed, 1 insertion(+) diff --git a/doc/guides/nics/features.rst b/doc/guides/nics/features.rst index a21146676f..6c37e79fda 100644 --- a/doc/guides/nics/features.rst +++ b/doc/guides/nics/features.rst @@ -583,6 +583,7 @@ Supports L4 checksum offload. * **[uses] mbuf**: ``mbuf.ol_flags:PKT_TX_IPV4`` | ``PKT_TX_IPV6``, ``mbuf.ol_flags:PKT_TX_L4_NO_CKSUM`` | ``PKT_TX_TCP_CKSUM`` | ``PKT_TX_SCTP_CKSUM`` | ``PKT_TX_UDP_CKSUM``. +* **[uses] mbuf**: ``mbuf.l2_len``, ``mbuf.l3_len``. * **[provides] mbuf**: ``mbuf.ol_flags:PKT_RX_L4_CKSUM_UNKNOWN`` | ``PKT_RX_L4_CKSUM_BAD`` | ``PKT_RX_L4_CKSUM_GOOD`` | ``PKT_RX_L4_CKSUM_NONE``. -- 2.20.1