git: ccbc5f307a66 - stable/15 - tcp lro: remove redundant check

The branch stable/15 has been updated by tuexen:

URL: https://cgit.FreeBSD.org/src/commit/?id=ccbc5f307a664c0ffba6eb0665106164665dffe2

commit ccbc5f307a664c0ffba6eb0665106164665dffe2
Author:     Michael Tuexen <tuexen@FreeBSD.org>
AuthorDate: 2025-09-23 18:28:54 +0000
Commit:     Michael Tuexen <tuexen@FreeBSD.org>
CommitDate: 2025-09-26 09:56:15 +0000

    tcp lro: remove redundant check
    
    Remove a check which is also done in tcp_lro_rx_common().
    
    Reviewed by:            gallatin
    Sponsored by:           Netflix, Inc.
    Differential Revision:  https://reviews.freebsd.org/D52683
    
    (cherry picked from commit 43bbecaeb95fe5ea1d7acffab4f2874247ba6915)
---
 sys/netinet/tcp_lro.c | 11 -----------
 1 file changed, 11 deletions(-)

diff --git a/sys/netinet/tcp_lro.c b/sys/netinet/tcp_lro.c
index 7512679bd4e9..64efa4bf060f 100644
--- a/sys/netinet/tcp_lro.c
+++ b/sys/netinet/tcp_lro.c
@@ -1428,17 +1428,6 @@ tcp_lro_rx(struct lro_ctrl *lc, struct mbuf *m, uint32_t csum)
 {
 	int error;
 
-	if (((m->m_pkthdr.csum_flags & (CSUM_DATA_VALID | CSUM_PSEUDO_HDR)) !=
-	     ((CSUM_DATA_VALID | CSUM_PSEUDO_HDR))) ||
-	    (m->m_pkthdr.csum_data != 0xffff)) {
-		/*
-		 * The checksum either did not have hardware offload
-		 * or it was a bad checksum. We can't LRO such
-		 * a packet.
-		 */
-		counter_u64_add(tcp_bad_csums, 1);
-		return (TCP_LRO_CANNOT);
-	}
 	/* get current time */
 	binuptime(&lc->lro_last_queue_time);
 	CURVNET_SET(lc->ifp->if_vnet);