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wg: Avoid leaking mbufs when the input handshake queue is full

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Reviewed by:	grehan
Sponsored by:	The FreeBSD Foundation
MFC after:	3 days
Differential Revision:	https://reviews.freebsd.org/D29011
This commit is contained in:
Mark Johnston 2021-03-08 12:39:05 -05:00
parent af06ff5553
commit a11009dccb
1 changed files with 4 additions and 1 deletions
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5
sys/dev/if_wg/module/if_wg_session.c
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@ -1913,6 +1913,7 @@ wg_input(struct mbuf *m0, int offset, struct inpcb *inpcb,
*/
if ((m = m_pullup(m0, m0->m_pkthdr.len)) == NULL) {
DPRINTF(sc, "DEFRAG fail\n");
m_freem(m0);
return;
}
data = mtod(m, void *);
@ -1943,8 +1944,10 @@ wg_input(struct mbuf *m0, int offset, struct inpcb *inpcb,
verify_endpoint(m);
if (mbufq_enqueue(&sc->sc_handshake_queue, m) == 0) {
GROUPTASK_ENQUEUE(&sc->sc_handshake);
} else
} else {
DPRINTF(sc, "Dropping handshake packet\n");
wg_m_freem(m);
}
} else if (pktlen >= sizeof(struct wg_pkt_data) + NOISE_MAC_SIZE
&& pkttype == MESSAGE_DATA) {