[dpdk-dev] [PATCH v2 02/15] net/thunderx: correct transmit checksum handling

Kamil Rytarowski krytarowski at caviumnetworks.com
Fri Sep 30 14:05:41 CEST 2016


From: Kamil Rytarowski <kamil.rytarowski at caviumnetworks.com>

The symbols PKT_TX_TCP_CKSUM and PKT_TX_UDP_CKSUM are not bits on a
bitmask. Set l3_offset always for TX offloads, not just for PKT_TX_IP_CKSUM
being true.

Fixes: 1c421f18e095 ("net/thunderx: add single and multi-segment Tx")

Signed-off-by: Maciej Czekaj <maciej.czekaj at caviumnetworks.com>
Signed-off-by: Kamil Rytarowski <kamil.rytarowski at caviumnetworks.com>
Signed-off-by: Zyta Szpak <zyta.szpak at semihalf.com>
Signed-off-by: Slawomir Rosek <slawomir.rosek at semihalf.com>
Signed-off-by: Radoslaw Biernacki <rad at semihalf.com>
Signed-off-by: Jerin Jacob <jerin.jacob at caviumnetworks.com>
---
 drivers/net/thunderx/nicvf_rxtx.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/net/thunderx/nicvf_rxtx.c b/drivers/net/thunderx/nicvf_rxtx.c
index eb51a72..e15c730 100644
--- a/drivers/net/thunderx/nicvf_rxtx.c
+++ b/drivers/net/thunderx/nicvf_rxtx.c
@@ -70,19 +70,20 @@ fill_sq_desc_header(union sq_entry_t *entry, struct rte_mbuf *pkt)
 	ol_flags = pkt->ol_flags & NICVF_TX_OFFLOAD_MASK;
 	if (unlikely(ol_flags)) {
 		/* L4 cksum */
-		if (ol_flags & PKT_TX_TCP_CKSUM)
+		uint64_t l4_flags = ol_flags & PKT_TX_L4_MASK;
+		if (l4_flags == PKT_TX_TCP_CKSUM)
 			sqe.hdr.csum_l4 = SEND_L4_CSUM_TCP;
-		else if (ol_flags & PKT_TX_UDP_CKSUM)
+		else if (l4_flags == PKT_TX_UDP_CKSUM)
 			sqe.hdr.csum_l4 = SEND_L4_CSUM_UDP;
 		else
 			sqe.hdr.csum_l4 = SEND_L4_CSUM_DISABLE;
+
+		sqe.hdr.l3_offset = pkt->l2_len;
 		sqe.hdr.l4_offset = pkt->l3_len + pkt->l2_len;
 
 		/* L3 cksum */
-		if (ol_flags & PKT_TX_IP_CKSUM) {
+		if (ol_flags & PKT_TX_IP_CKSUM)
 			sqe.hdr.csum_l3 = 1;
-			sqe.hdr.l3_offset = pkt->l2_len;
-		}
 	}
 
 	entry->buff[0] = sqe.buff[0];
-- 
1.9.1



More information about the dev mailing list