[src/trunk]: src/sys/dev/usb Drop wrong KASSERT; we don't need TCP headers here.

[rin <rin%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/782a16d94c92
branches:  trunk
changeset: 433468:782a16d94c92
user:      rin <rin%NetBSD.org@localhost>
date:      Sun Sep 16 01:27:21 2018 +0000

description:
Drop wrong KASSERT; we don't need TCP headers here.

diffstat:

 sys/dev/usb/if_mue.c |  19 +++----------------
 1 files changed, 3 insertions(+), 16 deletions(-)

diffs (55 lines):

diff -r 47ad9024b90c -r 782a16d94c92 sys/dev/usb/if_mue.c
--- a/sys/dev/usb/if_mue.c      Sun Sep 16 01:23:09 2018 +0000
+++ b/sys/dev/usb/if_mue.c      Sun Sep 16 01:27:21 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_mue.c,v 1.12 2018/09/16 01:23:09 rin Exp $  */
+/*     $NetBSD: if_mue.c,v 1.13 2018/09/16 01:27:21 rin Exp $  */
 /*     $OpenBSD: if_mue.c,v 1.3 2018/08/04 16:42:46 jsg Exp $  */
 
 /*
@@ -20,7 +20,7 @@
 /* Driver for Microchip LAN7500/LAN7800 chipsets. */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_mue.c,v 1.12 2018/09/16 01:23:09 rin Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_mue.c,v 1.13 2018/09/16 01:27:21 rin Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_usb.h"
@@ -53,7 +53,6 @@
 #include <netinet/in.h>
 #include <netinet/ip.h>                /* XXX for struct ip */
 #include <netinet/ip6.h>       /* XXX for struct ip6_hdr */
-#include <netinet/tcp.h>       /* XXX for struct tcphdr */
 
 #include <dev/mii/mii.h>
 #include <dev/mii/miivar.h>
@@ -1266,7 +1265,6 @@
        struct ip *ip;
        struct ip6_hdr *ip6;
        int offset;
-       bool v4;
 
        eh = mtod(m, struct ether_header *);
        switch (htons(eh->ether_type)) {
@@ -1284,19 +1282,8 @@
                /* NOTREACHED */
        }
 
-       v4 = (m->m_pkthdr.csum_flags & M_CSUM_TSOv4) != 0;
-
-#ifdef DIAGNOSTIC /* XXX */
-       int hlen = offset;
-       if (v4)
-               hlen += M_CSUM_DATA_IPv4_IPHL(m->m_pkthdr.csum_data);
-       else
-               hlen += M_CSUM_DATA_IPv6_IPHL(m->m_pkthdr.csum_data);
-       KASSERT(m->m_len >= (int)(hlen + sizeof(struct tcphdr)));
-#endif
-
        /* Packet length should be cleared. */
-       if (v4) {
+       if (m->m_pkthdr.csum_flags & M_CSUM_TSOv4) {
                ip = (void *)(mtod(m, char *) + offset);
                ip->ip_len = 0;
        } else {