Remove unused M_FRAG, M_FIRSTFRAG and M_LASTFRAG tagging from ip_fragment().
There wasn't any real driver (and hardware) support for it. Modern hardware does full fragmentation/segmentation offload instead.
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9d1c4ca773
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=254517
@ -784,7 +784,7 @@ ip_fragment(struct ip *ip, struct mbuf **m_frag, int mtu,
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IPSTAT_INC(ips_odropped);
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goto done;
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}
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m->m_flags |= (m0->m_flags & M_MCAST) | M_FRAG;
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m->m_flags |= (m0->m_flags & M_MCAST);
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/*
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* In the first mbuf, leave room for the link header, then
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* copy the original IP header including options. The payload
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@ -801,10 +801,9 @@ ip_fragment(struct ip *ip, struct mbuf **m_frag, int mtu,
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m->m_len = mhlen;
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/* XXX do we need to add ip_off below ? */
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mhip->ip_off = ((off - hlen) >> 3) + ip_off;
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if (off + len >= ip_len) { /* last fragment */
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if (off + len >= ip_len)
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len = ip_len - off;
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m->m_flags |= M_LASTFRAG;
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} else
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else
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mhip->ip_off |= IP_MF;
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mhip->ip_len = htons((u_short)(len + mhlen));
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m->m_next = m_copym(m0, off, len, M_NOWAIT);
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@ -831,10 +830,6 @@ ip_fragment(struct ip *ip, struct mbuf **m_frag, int mtu,
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}
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IPSTAT_ADD(ips_ofragments, nfrags);
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/* set first marker for fragment chain */
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m0->m_flags |= M_FIRSTFRAG | M_FRAG;
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m0->m_pkthdr.csum_data = nfrags;
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/*
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* Update first fragment by trimming what's been copied out
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* and updating header.
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