git: e820964dc7c4 - stable/14 - dpnaa2: announce transmit checksum support

The branch stable/14 has been updated by tuexen:

URL: https://cgit.FreeBSD.org/src/commit/?id=e820964dc7c4626a9f51f534434109418caa3acb

commit e820964dc7c4626a9f51f534434109418caa3acb
Author:     Michael Tuexen <tuexen@FreeBSD.org>
AuthorDate: 2026-01-23 07:59:57 +0000
Commit:     Michael Tuexen <tuexen@FreeBSD.org>
CommitDate: 2026-04-24 11:17:23 +0000

    dpnaa2: announce transmit checksum support
    
    Let the network stack know that the NIC supports checksum offloading
    for the IPv4 header checksum and the TCP and UDP transport checksum.
    This avoids the computation in software and therefore provides the
    expected performance gain.
    
    PR:                     292006
    Reviewed by:            dsl, Timo Völker
    Differential Revision:  https://reviews.freebsd.org/D54809
    
    (cherry picked from commit f31336b3e3146fed9cc517fef8e877c17496f9e0)
---
 sys/dev/dpaa2/dpaa2_ni.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/sys/dev/dpaa2/dpaa2_ni.c b/sys/dev/dpaa2/dpaa2_ni.c
index 20d4440b5532..f72217084cdd 100644
--- a/sys/dev/dpaa2/dpaa2_ni.c
+++ b/sys/dev/dpaa2/dpaa2_ni.c
@@ -209,6 +209,9 @@ MALLOC_DEFINE(M_DPAA2_TXB, "dpaa2_txb", "DPAA2 DMA-mapped buffer (Tx)");
 #define	RXH_L4_B_2_3		(1 << 7) /* dst port in case of TCP/UDP/SCTP */
 #define	RXH_DISCARD		(1 << 31)
 
+/* Transmit checksum offload */
+#define DPAA2_CSUM_TX_OFFLOAD	(CSUM_IP | CSUM_DELAY_DATA | CSUM_DELAY_DATA_IPV6)
+
 /* Default Rx hash options, set during attaching. */
 #define DPAA2_RXH_DEFAULT	(RXH_IP_SRC | RXH_IP_DST | RXH_L4_B_0_1 | RXH_L4_B_2_3)
 
@@ -541,6 +544,7 @@ dpaa2_ni_attach(device_t dev)
 	if_settransmitfn(ifp, dpaa2_ni_transmit);
 	if_setqflushfn(ifp, dpaa2_ni_qflush);
 
+	if_sethwassist(sc->ifp, DPAA2_CSUM_TX_OFFLOAD);
 	if_setcapabilities(ifp, IFCAP_VLAN_MTU | IFCAP_HWCSUM |
 	    IFCAP_HWCSUM_IPV6 | IFCAP_JUMBO_MTU);
 	if_setcapenable(ifp, if_getcapabilities(ifp));
@@ -2585,8 +2589,10 @@ dpaa2_ni_ioctl(if_t ifp, u_long c, caddr_t data)
 		changed = if_getcapenable(ifp) ^ ifr->ifr_reqcap;
 		if ((changed & (IFCAP_RXCSUM | IFCAP_RXCSUM_IPV6)) != 0)
 			if_togglecapenable(ifp, IFCAP_RXCSUM | IFCAP_RXCSUM_IPV6);
-		if ((changed & (IFCAP_TXCSUM | IFCAP_TXCSUM_IPV6)) != 0)
-                        if_togglecapenable(ifp, IFCAP_TXCSUM | IFCAP_TXCSUM_IPV6);
+		if ((changed & (IFCAP_TXCSUM | IFCAP_TXCSUM_IPV6)) != 0) {
+			if_togglecapenable(ifp, IFCAP_TXCSUM | IFCAP_TXCSUM_IPV6);
+			if_togglehwassist(ifp, DPAA2_CSUM_TX_OFFLOAD);
+		}
 
 		rc = dpaa2_ni_setup_if_caps(sc);
 		if (rc) {