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| author | Yuanhan Liu <yuanhan.liu@linux.intel.com> | 2016-03-25 15:58:51 +0800 |
|---|---|---|
| committer | Thomas Monjalon <thomas.monjalon@6wind.com> | 2016-03-25 19:53:00 +0100 |
| commit | df40169ac0e2f82847812b4082258dee518572fb (patch) | |
| tree | e84b18202c94098f5d6c1ed417d63592e5d7983a /examples | |
| parent | 5674dad222d62130ae3ba59fe818caaa4843957c (diff) | |
| download | dpdk-df40169ac0e2f82847812b4082258dee518572fb.zip dpdk-df40169ac0e2f82847812b4082258dee518572fb.tar.gz dpdk-df40169ac0e2f82847812b4082258dee518572fb.tar.xz | |
examples/vhost: fix offload settings
Comments for PKT_TX_TCP_SEG at rte_mbuf says that we should only set
PKT_TX_IP_CKSUM and reset ip hdr checksum for IPv4:
- if it's IPv4, set the PKT_TX_IP_CKSUM flag and write the IP checksum
to 0 in the packet
Fixes: 9fd72e3cbd29 ("examples/vhost: add virtio offload")
Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Diffstat (limited to 'examples')
| -rw-r--r-- | examples/vhost/main.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/examples/vhost/main.c b/examples/vhost/main.c index ceabbce..86e5c24 100644 --- a/examples/vhost/main.c +++ b/examples/vhost/main.c @@ -1163,10 +1163,13 @@ static void virtio_tx_offload(struct rte_mbuf *m) l3_hdr = (char *)eth_hdr + m->l2_len; - ipv4_hdr = (struct ipv4_hdr *)l3_hdr; + if (m->ol_flags & PKT_TX_IPV4) { + ipv4_hdr = l3_hdr; + ipv4_hdr->hdr_checksum = 0; + m->ol_flags |= PKT_TX_IP_CKSUM; + } + tcp_hdr = (struct tcp_hdr *)((char *)l3_hdr + m->l3_len); - m->ol_flags |= PKT_TX_IP_CKSUM; - ipv4_hdr->hdr_checksum = 0; tcp_hdr->cksum = get_psd_sum(l3_hdr, m->ol_flags); } |