From: Didier Pallard <didier.pallard@6wind.com>
To: dev@dpdk.org
Cc: stable@dpdk.org
Subject: [dpdk-dev] [PATCH] net: fix Intel prepare function for IP checksum offload
Date: Wed, 19 Sep 2018 16:42:08 +0200 [thread overview]
Message-ID: <20180919144208.17064-1-didier.pallard@6wind.com> (raw)
Current Intel tx prepare function does not properly handle the
case where only IP checksum is requested, without requesting
any L4 checksum or TSO: IP checksum is not properly reset to 0
and output packet may contain invalid IP checksum.
Fixes: 4fb7e803eb1a ("ethdev: add Tx preparation")
Cc: stable@dpdk.org
Signed-off-by: Didier Pallard <didier.pallard@6wind.com>
---
lib/librte_net/rte_net.h | 20 ++++++++------------
1 file changed, 8 insertions(+), 12 deletions(-)
diff --git a/lib/librte_net/rte_net.h b/lib/librte_net/rte_net.h
index b6ab6e1d57b2..e59760a0a108 100644
--- a/lib/librte_net/rte_net.h
+++ b/lib/librte_net/rte_net.h
@@ -122,14 +122,16 @@ rte_net_intel_cksum_flags_prepare(struct rte_mbuf *m, uint64_t ol_flags)
(ol_flags & PKT_TX_OUTER_IPV6))
inner_l3_offset += m->outer_l2_len + m->outer_l3_len;
- if ((ol_flags & PKT_TX_UDP_CKSUM) == PKT_TX_UDP_CKSUM) {
- if (ol_flags & PKT_TX_IPV4) {
- ipv4_hdr = rte_pktmbuf_mtod_offset(m, struct ipv4_hdr *,
- inner_l3_offset);
+ if (ol_flags & PKT_TX_IPV4) {
+ ipv4_hdr = rte_pktmbuf_mtod_offset(m, struct ipv4_hdr *,
+ inner_l3_offset);
- if (ol_flags & PKT_TX_IP_CKSUM)
- ipv4_hdr->hdr_checksum = 0;
+ if (ol_flags & PKT_TX_IP_CKSUM)
+ ipv4_hdr->hdr_checksum = 0;
+ }
+ if ((ol_flags & PKT_TX_UDP_CKSUM) == PKT_TX_UDP_CKSUM) {
+ if (ol_flags & PKT_TX_IPV4) {
udp_hdr = (struct udp_hdr *)((char *)ipv4_hdr +
m->l3_len);
udp_hdr->dgram_cksum = rte_ipv4_phdr_cksum(ipv4_hdr,
@@ -146,12 +148,6 @@ rte_net_intel_cksum_flags_prepare(struct rte_mbuf *m, uint64_t ol_flags)
} else if ((ol_flags & PKT_TX_TCP_CKSUM) ||
(ol_flags & PKT_TX_TCP_SEG)) {
if (ol_flags & PKT_TX_IPV4) {
- ipv4_hdr = rte_pktmbuf_mtod_offset(m, struct ipv4_hdr *,
- inner_l3_offset);
-
- if (ol_flags & PKT_TX_IP_CKSUM)
- ipv4_hdr->hdr_checksum = 0;
-
/* non-TSO tcp or TSO */
tcp_hdr = (struct tcp_hdr *)((char *)ipv4_hdr +
m->l3_len);
--
2.11.0
next reply other threads:[~2018-09-19 14:42 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-19 14:42 Didier Pallard [this message]
2018-09-19 17:50 ` [dpdk-dev] [dpdk-stable] " Ferruh Yigit
2018-09-20 14:53 ` [dpdk-dev] " Ananyev, Konstantin
2018-09-21 1:12 ` [dpdk-dev] [dpdk-stable] " Ferruh Yigit
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