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| author | sephe <sephe@FreeBSD.org> | 2016-02-25 07:03:10 +0000 |
|---|---|---|
| committer | sephe <sephe@FreeBSD.org> | 2016-02-25 07:03:10 +0000 |
| commit | a9e53514f10ae3c5a2aaad205f978f9a6787fcf4 (patch) | |
| tree | 9077b71c891c16db7f592043482b76d4ec84f5bd | |
| parent | 34284c5396d89b7b76aeccb27ae6e2a2e46c9936 (diff) | |
| download | FreeBSD-src-a9e53514f10ae3c5a2aaad205f978f9a6787fcf4.zip FreeBSD-src-a9e53514f10ae3c5a2aaad205f978f9a6787fcf4.tar.gz | |
hyperv/hn: Hold the TX ring lock then drain TX desc buf_ring
Reported by: Hongxiong Xian <v-hoxian microsoft com>
MFC after: 1 week
Sponsored by: Microsoft OSTC
| -rw-r--r-- | sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c b/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c index 5d32648..ce61fac 100644 --- a/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c +++ b/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c @@ -2326,8 +2326,10 @@ hn_destroy_tx_ring(struct hn_tx_ring *txr) hn_txdesc_dmamap_destroy(txd); } #else + mtx_lock(&txr->hn_tx_lock); while ((txd = buf_ring_dequeue_sc(txr->hn_txdesc_br)) != NULL) hn_txdesc_dmamap_destroy(txd); + mtx_unlock(&txr->hn_tx_lock); #endif if (txr->hn_tx_data_dtag != NULL) |
