From: Olivier Matz <olivier.matz@6wind.com>
To: dev@dpdk.org, pablo.de.lara.guarch@intel.com
Subject: [dpdk-dev] [PATCH v2 7/8] app/testpmd: don't use tso if packet is too small
Date: Fri, 9 Sep 2016 09:55:33 +0200 [thread overview]
Message-ID: <1473407734-11253-8-git-send-email-olivier.matz@6wind.com> (raw)
In-Reply-To: <1473407734-11253-1-git-send-email-olivier.matz@6wind.com>
Asking for TSO (TCP Segmentation Offload) on packets that are already
smaller than (headers + MSS) does not work, for instance on ixgbe.
Fix the csumonly engine to only set the TSO flag when a segmentation
offload is really required, i.e. when packet is large enough.
Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
---
app/test-pmd/csumonly.c | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/app/test-pmd/csumonly.c b/app/test-pmd/csumonly.c
index 35edf1d..9938150 100644
--- a/app/test-pmd/csumonly.c
+++ b/app/test-pmd/csumonly.c
@@ -102,6 +102,7 @@ struct testpmd_offload_info {
uint16_t outer_l3_len;
uint8_t outer_l4_proto;
uint16_t tso_segsz;
+ uint32_t pkt_len;
};
/* simplified GRE header */
@@ -329,13 +330,20 @@ process_inner_cksums(void *l3_hdr, const struct testpmd_offload_info *info,
struct tcp_hdr *tcp_hdr;
struct sctp_hdr *sctp_hdr;
uint64_t ol_flags = 0;
+ uint32_t max_pkt_len, tso_segsz = 0;
+
+ /* ensure packet is large enough to require tso */
+ max_pkt_len = info->l2_len + info->l3_len + info->l4_len +
+ info->tso_segsz;
+ if (info->tso_segsz != 0 && info->pkt_len > max_pkt_len)
+ tso_segsz = info->tso_segsz;
if (info->ethertype == _htons(ETHER_TYPE_IPv4)) {
ipv4_hdr = l3_hdr;
ipv4_hdr->hdr_checksum = 0;
ol_flags |= PKT_TX_IPV4;
- if (info->tso_segsz != 0 && info->l4_proto == IPPROTO_TCP) {
+ if (tso_segsz != 0 && info->l4_proto == IPPROTO_TCP) {
ol_flags |= PKT_TX_IP_CKSUM;
} else {
if (testpmd_ol_flags & TESTPMD_TX_OFFLOAD_IP_CKSUM)
@@ -367,7 +375,7 @@ process_inner_cksums(void *l3_hdr, const struct testpmd_offload_info *info,
} else if (info->l4_proto == IPPROTO_TCP) {
tcp_hdr = (struct tcp_hdr *)((char *)l3_hdr + info->l3_len);
tcp_hdr->cksum = 0;
- if (info->tso_segsz != 0) {
+ if (tso_segsz != 0) {
ol_flags |= PKT_TX_TCP_SEG;
tcp_hdr->cksum = get_psd_sum(l3_hdr, info->ethertype,
ol_flags);
@@ -667,6 +675,7 @@ 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;
rx_ol_flags = m->ol_flags;
--
2.8.1
next prev parent reply other threads:[~2016-09-09 7:55 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-09 7:55 [dpdk-dev] [PATCH v2 0/8] Misc enhancements in testpmd Olivier Matz
2016-09-09 7:55 ` [dpdk-dev] [PATCH v2 1/8] mbuf: add function to dump ol flag list Olivier Matz
2016-10-05 6:45 ` De Lara Guarch, Pablo
2016-10-05 14:19 ` Olivier Matz
2016-10-06 8:42 ` [dpdk-dev] [PATCH v3] " Olivier Matz
2016-10-07 3:51 ` De Lara Guarch, Pablo
2016-10-07 15:39 ` Olivier Matz
2016-09-09 7:55 ` [dpdk-dev] [PATCH v2 2/8] app/testpmd: use new function to dump offload flags Olivier Matz
2016-09-09 7:55 ` [dpdk-dev] [PATCH v2 3/8] app/testpmd: dump rx flags in csum engine Olivier Matz
2016-09-09 7:55 ` [dpdk-dev] [PATCH v2 4/8] app/testpmd: add option to enable lro Olivier Matz
2016-10-05 6:26 ` De Lara Guarch, Pablo
2016-10-05 14:18 ` Olivier Matz
2016-10-06 8:44 ` [dpdk-dev] [PATCH v3] " Olivier Matz
2016-10-06 8:47 ` [dpdk-dev] [PATCH v4] " Olivier Matz
2016-09-09 7:55 ` [dpdk-dev] [PATCH v2 5/8] app/testpmd: do not change ip addrs in csum engine Olivier Matz
2016-09-09 7:55 ` [dpdk-dev] [PATCH v2 6/8] app/testpmd: display rx port " Olivier Matz
2016-09-09 7:55 ` Olivier Matz [this message]
2016-09-09 7:55 ` [dpdk-dev] [PATCH v2 8/8] app/testpmd: hide segsize when unrelevant " Olivier Matz
2016-10-03 9:02 ` [dpdk-dev] [PATCH v2 0/8] Misc enhancements in testpmd Olivier Matz
2016-10-07 16:05 ` [dpdk-dev] [PATCH v5 " Olivier Matz
2016-10-07 16:05 ` [dpdk-dev] [PATCH v5 1/8] mbuf: add function to dump ol flag list Olivier Matz
2016-10-11 20:42 ` Thomas Monjalon
2016-10-07 16:05 ` [dpdk-dev] [PATCH v5 2/8] app/testpmd: use new function to dump offload flags Olivier Matz
2016-10-07 16:05 ` [dpdk-dev] [PATCH v5 3/8] app/testpmd: dump Rx flags in csum engine Olivier Matz
2016-10-07 16:05 ` [dpdk-dev] [PATCH v5 4/8] app/testpmd: add option to enable lro Olivier Matz
2016-10-07 16:05 ` [dpdk-dev] [PATCH v5 5/8] app/testpmd: do not change ip addrs in csum engine Olivier Matz
2016-10-07 16:05 ` [dpdk-dev] [PATCH v5 6/8] app/testpmd: display Rx port " Olivier Matz
2016-10-07 16:05 ` [dpdk-dev] [PATCH v5 7/8] app/testpmd: don't use tso if packet is too small Olivier Matz
2016-10-07 16:05 ` [dpdk-dev] [PATCH v5 8/8] app/testpmd: hide segsize when unrelevant in csum engine Olivier Matz
2016-10-11 18:13 ` [dpdk-dev] [PATCH v5 0/8] Misc enhancements in testpmd De Lara Guarch, Pablo
2016-10-12 15:39 ` [dpdk-dev] [PATCH v6 " Olivier Matz
2016-10-12 15:39 ` [dpdk-dev] [PATCH v6 1/8] mbuf: add function to dump ol flag list Olivier Matz
2016-10-12 15:39 ` [dpdk-dev] [PATCH v6 2/8] app/testpmd: use new function to dump offload flags Olivier Matz
2016-10-12 15:39 ` [dpdk-dev] [PATCH v6 3/8] app/testpmd: dump Rx flags in csum engine Olivier Matz
2016-10-12 15:39 ` [dpdk-dev] [PATCH v6 4/8] app/testpmd: add option to enable lro Olivier Matz
2016-10-12 15:39 ` [dpdk-dev] [PATCH v6 5/8] app/testpmd: do not change ip addrs in csum engine Olivier Matz
2016-10-12 15:39 ` [dpdk-dev] [PATCH v6 6/8] app/testpmd: display Rx port " Olivier Matz
2016-10-12 15:39 ` [dpdk-dev] [PATCH v6 7/8] app/testpmd: don't use tso if packet is too small Olivier Matz
2016-10-12 15:39 ` [dpdk-dev] [PATCH v6 8/8] app/testpmd: hide segsize when unrelevant in csum engine Olivier Matz
2016-10-12 16:41 ` [dpdk-dev] [PATCH v6 0/8] Misc enhancements in testpmd Thomas Monjalon
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1473407734-11253-8-git-send-email-olivier.matz@6wind.com \
--to=olivier.matz@6wind.com \
--cc=dev@dpdk.org \
--cc=pablo.de.lara.guarch@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).