* [dpdk-dev] [PATCH v1] net/ice: optimize TCP header size calculation
@ 2020-07-30 16:04 Haiyue Wang
0 siblings, 0 replies; only message in thread
From: Haiyue Wang @ 2020-07-30 16:04 UTC (permalink / raw)
To: dev, qiming.yang, qi.z.zhang; +Cc: ting.xu, yinan.wang, Haiyue Wang, stable
The rte_pktmbuf_read function can handle the contiguous data buffer
reading, so remove the redundant contiguous memory handling.
Fixes: 17c7d0f9d6a4 ("net/ice: support basic Rx/Tx")
Fixes: 2a0c9ae4f646 ("net/ice: fix TCP checksum offload")
Fixes: 7365a3cee51f ("net/ice: calculate TCP header size for offload")
Cc: stable@dpdk.org
Signed-off-by: Haiyue Wang <haiyue.wang@intel.com>
---
drivers/net/ice/ice_rxtx.c | 14 ++++----------
1 file changed, 4 insertions(+), 10 deletions(-)
diff --git a/drivers/net/ice/ice_rxtx.c b/drivers/net/ice/ice_rxtx.c
index bcb67ec25..a35c5546b 100644
--- a/drivers/net/ice/ice_rxtx.c
+++ b/drivers/net/ice/ice_rxtx.c
@@ -2375,18 +2375,12 @@ ice_calc_pkt_desc(struct rte_mbuf *tx_pkt)
static inline uint16_t
ice_calc_pkt_tcp_hdr(struct rte_mbuf *tx_pkt, union ice_tx_offload tx_offload)
{
- uint16_t tcpoff = tx_offload.l2_len + tx_offload.l3_len;
const struct rte_tcp_hdr *tcp_hdr;
- struct rte_tcp_hdr _tcp_hdr;
+ struct rte_tcp_hdr tcp_hdr_buf;
- if (tcpoff + sizeof(struct rte_tcp_hdr) < tx_pkt->data_len) {
- tcp_hdr = rte_pktmbuf_mtod_offset(tx_pkt, struct rte_tcp_hdr *,
- tcpoff);
-
- return (tcp_hdr->data_off & 0xf0) >> 2;
- }
-
- tcp_hdr = rte_pktmbuf_read(tx_pkt, tcpoff, sizeof(_tcp_hdr), &_tcp_hdr);
+ tcp_hdr = rte_pktmbuf_read(tx_pkt,
+ tx_offload.l2_len + tx_offload.l3_len,
+ sizeof(tcp_hdr_buf), &tcp_hdr_buf);
if (tcp_hdr)
return (tcp_hdr->data_off & 0xf0) >> 2;
else
--
2.28.0
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