diff options
Diffstat (limited to 'sys/dev/e1000/if_em.c')
| -rw-r--r-- | sys/dev/e1000/if_em.c | 25 |
1 files changed, 13 insertions, 12 deletions
diff --git a/sys/dev/e1000/if_em.c b/sys/dev/e1000/if_em.c index 3344697..a431266 100644 --- a/sys/dev/e1000/if_em.c +++ b/sys/dev/e1000/if_em.c @@ -905,22 +905,24 @@ em_mq_start_locked(struct ifnet *ifp, struct tx_ring *txr, struct mbuf *m) } enq = 0; - if (m == NULL) { - next = drbr_dequeue(ifp, txr->br); - } else if (drbr_needs_enqueue(ifp, txr->br)) { - if ((err = drbr_enqueue(ifp, txr->br, m)) != 0) + if (m != NULL) { + err = drbr_enqueue(ifp, txr->br, m); + if (err) { return (err); - next = drbr_dequeue(ifp, txr->br); - } else - next = m; + } + } /* Process the queue */ - while (next != NULL) { + while ((next = drbr_peek(ifp, txr->br)) != NULL) { if ((err = em_xmit(txr, &next)) != 0) { - if (next != NULL) - err = drbr_enqueue(ifp, txr->br, next); - break; + if (next == NULL) { + drbr_advance(ifp, txr->br); + } else { + drbr_putback(ifp, txr->br, next); + } + break; } + drbr_advance(ifp, txr->br); enq++; ifp->if_obytes += next->m_pkthdr.len; if (next->m_flags & M_MCAST) @@ -928,7 +930,6 @@ em_mq_start_locked(struct ifnet *ifp, struct tx_ring *txr, struct mbuf *m) ETHER_BPF_MTAP(ifp, next); if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) break; - next = drbr_dequeue(ifp, txr->br); } if (enq > 0) { |
