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rsu: add KASSERT to document maximum mbuf size in rsu_tx_start

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PR:		254479
Reviewed by:	markj
Sponsored by:	The FreeBSD Foundation
This commit is contained in:
Ed Maste 2021-03-22 14:34:31 -04:00
parent 15211f1950
commit 453d8a7ee2
1 changed files with 1 additions and 0 deletions
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sys/dev/usb/wlan/if_rsu.c
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@ -2897,6 +2897,7 @@ rsu_tx_start(struct rsu_softc *sc, struct ieee80211_node *ni,
}
xferlen = sizeof(*txd) + m0->m_pkthdr.len;
KASSERT(xferlen <= RSU_TXBUFSZ, ("%s: invalid length", __func__));
m_copydata(m0, 0, m0->m_pkthdr.len, (caddr_t)&txd[1]);
data->buflen = xferlen;