[dpdk-dev,v8,2/2] app/testpmd: conserve offload flags of mbuf
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Commit Message
This patch is to accommodate an experimental feature of mbuf - external
buffer attachment. If mbuf is attached to an external buffer, its ol_flags
will have EXT_ATTACHED_MBUF set. Without enabling/using the feature,
everything remains same.
If PMD delivers Rx packets with non-direct mbuf, ol_flags should not be
overwritten. For mlx5 PMD, if Multi-Packet RQ is enabled, Rx packets could
be carried with externally attached mbufs.
Signed-off-by: Yongseok Koh <yskoh@mellanox.com>
Acked-by: Andrew Rybchenko <arybchenko@solarflare.com>
v8:
* inherit flags from mbuf instead of checking !RTE_MBUF_DIRECT().
* fix a bug - update flags on per-packet basis.
---
app/test-pmd/csumonly.c | 3 ++-
app/test-pmd/macfwd.c | 3 ++-
app/test-pmd/macswap.c | 3 ++-
3 files changed, 6 insertions(+), 3 deletions(-)
@@ -737,7 +737,8 @@ pkt_burst_checksum_forward(struct fwd_stream *fs)
m = pkts_burst[i];
info.is_tunnel = 0;
info.pkt_len = rte_pktmbuf_pkt_len(m);
- tx_ol_flags = 0;
+ tx_ol_flags = m->ol_flags &
+ (IND_ATTACHED_MBUF | EXT_ATTACHED_MBUF);
rx_ol_flags = m->ol_flags;
/* Update the L3/L4 checksum error packet statistics */
@@ -96,7 +96,8 @@ pkt_burst_mac_forward(struct fwd_stream *fs)
ð_hdr->d_addr);
ether_addr_copy(&ports[fs->tx_port].eth_addr,
ð_hdr->s_addr);
- mb->ol_flags = ol_flags;
+ mb->ol_flags &= IND_ATTACHED_MBUF | EXT_ATTACHED_MBUF;
+ mb->ol_flags |= ol_flags;
mb->l2_len = sizeof(struct ether_hdr);
mb->l3_len = sizeof(struct ipv4_hdr);
mb->vlan_tci = txp->tx_vlan_id;
@@ -127,7 +127,8 @@ pkt_burst_mac_swap(struct fwd_stream *fs)
ether_addr_copy(ð_hdr->s_addr, ð_hdr->d_addr);
ether_addr_copy(&addr, ð_hdr->s_addr);
- mb->ol_flags = ol_flags;
+ mb->ol_flags &= IND_ATTACHED_MBUF | EXT_ATTACHED_MBUF;
+ mb->ol_flags |= ol_flags;
mb->l2_len = sizeof(struct ether_hdr);
mb->l3_len = sizeof(struct ipv4_hdr);
mb->vlan_tci = txp->tx_vlan_id;