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Don't transmit mbufs that aren't yet ready on TOE sockets.

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This includes mbufs waiting for data from sendfile() I/O requests, or
mbufs awaiting encryption for KTLS.

Reviewed by:	np
MFC after:	2 weeks
Sponsored by:	Chelsio Communications
Differential Revision:	https://reviews.freebsd.org/D27469
This commit is contained in:
John Baldwin 2020-12-03 22:01:13 +00:00
parent dbc5c85c66
commit 99963f5343
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=368314
1 changed files with 6 additions and 3 deletions
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9
sys/dev/cxgbe/tom/t4_cpl_io.c
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@ -721,6 +721,8 @@ t4_push_frames(struct adapter *sc, struct toepcb *toep, int drop)
for (m = sndptr; m != NULL; m = m->m_next) {
int n;
if ((m->m_flags & M_NOTAVAIL) != 0)
break;
if (m->m_flags & M_EXTPG) {
#ifdef KERN_TLS
if (m->m_epg_tls != NULL) {
@ -803,8 +805,9 @@ t4_push_frames(struct adapter *sc, struct toepcb *toep, int drop)
/* nothing to send */
if (plen == 0) {
KASSERT(m == NULL,
("%s: nothing to send, but m != NULL", __func__));
KASSERT(m == NULL || (m->m_flags & M_NOTAVAIL) != 0,
("%s: nothing to send, but m != NULL is ready",
__func__));
break;
}
@ -892,7 +895,7 @@ t4_push_frames(struct adapter *sc, struct toepcb *toep, int drop)
toep->txsd_avail--;
t4_l2t_send(sc, wr, toep->l2te);
} while (m != NULL);
} while (m != NULL && (m->m_flags & M_NOTAVAIL) == 0);
/* Send a FIN if requested, but only if there's no more data to send */
if (m == NULL && toep->flags & TPF_SEND_FIN)