net80211: replace m_getcl/m_gethdr pair with m_get2 in ieee80211_fragment()
- Switch to m_get2() for mbuf allocation instead of manual mbuf size determination. - Reuse MIN() macro for mbuf size selection.
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=300911
@ -1679,16 +1679,8 @@ ieee80211_fragment(struct ieee80211vap *vap, struct mbuf *m0,
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remainder = m0->m_pkthdr.len - off;
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prev = m0;
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do {
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fragsize = totalhdrsize + remainder;
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if (fragsize > mtu)
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fragsize = mtu;
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/* XXX fragsize can be >2048! */
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KASSERT(fragsize < MCLBYTES,
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("fragment size %u too big!", fragsize));
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if (fragsize > MHLEN)
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m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
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else
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m = m_gethdr(M_NOWAIT, MT_DATA);
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fragsize = MIN(totalhdrsize + remainder, mtu);
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m = m_get2(fragsize, M_NOWAIT, MT_DATA, M_PKTHDR);
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if (m == NULL)
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goto bad;
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/* leave room to prepend any cipher header */
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