[dpdk-dev] [PATCH v2 1/1] lib/librte_ip_frag: Remove PKT_TX_IP_CKSUM offload flags

[Sunil Kumar Kori <skori@marvell.com>]

Currently PKT_TX_IP_CKSUM is being set into mbuf->ol_flags during
fragmentation operation implicitly by the library. Because of this,
application is forced to use checksum offload whether it is supported
by platform or not.

Also documentation does not provide any expected value of ol_flags in
returned fragmented mbufs so application will never come to know that which
offloads are enabled. So transmission may be failed for the platforms which
does not support checksum offload.

So removing mentioned flag from the library.

Mentioned changeset is part of http://patches.dpdk.org/patch/53475/
Changes for reassembly operation is already accepcted. This patch set
implements the similar change for fragmentation operation.

Signed-off-by: Sunil Kumar Kori <skori@marvell.com>
---
Current patch is part of following patchset                                     
http://patches.dpdk.org/patch/53475/                                            
which is missed to be merged into upstream because of accepted version of this  
patch does not contain this change.                                             
                                                                                
Accepted patchset is given below:                                               
http://patches.dpdk.org/patch/56202/                                            
                                                                                
Patchset is already reviewed and acked on maillist. Also corrersponding release 
notes are updated.                                                              

 lib/librte_ip_frag/rte_ipv4_fragmentation.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/lib/librte_ip_frag/rte_ipv4_fragmentation.c b/lib/librte_ip_frag/rte_ipv4_fragmentation.c
index 221d74e..9e9f986 100644
--- a/lib/librte_ip_frag/rte_ipv4_fragmentation.c
+++ b/lib/librte_ip_frag/rte_ipv4_fragmentation.c
@@ -173,7 +173,6 @@ static inline void __free_fragments(struct rte_mbuf *mb[], uint32_t num)
 		fragment_offset = (uint16_t)(fragment_offset +
 		    out_pkt->pkt_len - sizeof(struct rte_ipv4_hdr));
 
-		out_pkt->ol_flags |= PKT_TX_IP_CKSUM;
 		out_pkt->l3_len = sizeof(struct rte_ipv4_hdr);
 
 		/* Write the fragment to the output list */
-- 
1.8.3.1