Author: royger Date: Thu Jun 2 11:19:16 2016 New Revision: 301200 URL: https://svnweb.freebsd.org/changeset/base/301200
Log: xen-netfront: release grant references used for the shared rings Just calling gnttab_end_foreign_access_ref doesn't free the references, instead call gnttab_end_foreign_access with a NULL page argument in order to have the grant references freed. The code that maps the ring (xenbus_map_ring) already uses gnttab_grant_foreign_access which takes care of allocating a grant reference. Reviewed by: Wei Liu <wei.l...@citrix.com> Sponsored by: Citrix Systems R&D Differential revision: https://reviews.freebsd.org/D6608 Modified: head/sys/dev/xen/netfront/netfront.c Modified: head/sys/dev/xen/netfront/netfront.c ============================================================================== --- head/sys/dev/xen/netfront/netfront.c Thu Jun 2 11:18:02 2016 (r301199) +++ head/sys/dev/xen/netfront/netfront.c Thu Jun 2 11:19:16 2016 (r301200) @@ -663,7 +663,7 @@ disconnect_rxq(struct netfront_rxq *rxq) xn_release_rx_bufs(rxq); gnttab_free_grant_references(rxq->gref_head); - gnttab_end_foreign_access_ref(rxq->ring_ref); + gnttab_end_foreign_access(rxq->ring_ref, NULL); /* * No split event channel support at the moment, handle will * be unbound in tx. So no need to call xen_intr_unbind here, @@ -765,7 +765,7 @@ disconnect_txq(struct netfront_txq *txq) xn_release_tx_bufs(txq); gnttab_free_grant_references(txq->gref_head); - gnttab_end_foreign_access_ref(txq->ring_ref); + gnttab_end_foreign_access(txq->ring_ref, NULL); xen_intr_unbind(&txq->xen_intr_handle); } @@ -877,7 +877,7 @@ fail_bind_port: fail_start_thread: buf_ring_free(txq->br, M_DEVBUF); taskqueue_free(txq->tq); - gnttab_end_foreign_access_ref(txq->ring_ref); + gnttab_end_foreign_access(txq->ring_ref, NULL); fail_grant_ring: gnttab_free_grant_references(txq->gref_head); free(txq->ring.sring, M_DEVBUF); _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
