Author: arybchik Date: Fri Nov 30 07:11:05 2018 New Revision: 341327 URL: https://svnweb.freebsd.org/changeset/base/341327
Log: sfxge(4): rollback last seen VLAN TCI if Tx packet is dropped Early processing of a packet on transmit may change last seen VLAN TCI in the queue context. If such a packet is eventually dropped, last seen VLAN TCI must be set to its previous value. Submitted by: Ivan Malov <Ivan.Malov at oktetlabs.ru> Sponsored by: Solarflare Communications, Inc. MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D18288 Modified: head/sys/dev/sfxge/sfxge_tx.c Modified: head/sys/dev/sfxge/sfxge_tx.c ============================================================================== --- head/sys/dev/sfxge/sfxge_tx.c Fri Nov 30 07:10:54 2018 (r341326) +++ head/sys/dev/sfxge/sfxge_tx.c Fri Nov 30 07:11:05 2018 (r341327) @@ -361,6 +361,7 @@ static int sfxge_tx_queue_mbuf(struct sfxge_txq *txq, int rc; int i; int eop; + uint16_t hw_vlan_tci_prev; int vlan_tagged; KASSERT(!txq->blocked, ("txq->blocked")); @@ -412,6 +413,8 @@ static int sfxge_tx_queue_mbuf(struct sfxge_txq *txq, used_map = &stmp->map; + hw_vlan_tci_prev = txq->hw_vlan_tci; + vlan_tagged = sfxge_tx_maybe_insert_tag(txq, mbuf); if (vlan_tagged) { sfxge_next_stmp(txq, &stmp); @@ -463,6 +466,7 @@ static int sfxge_tx_queue_mbuf(struct sfxge_txq *txq, return (0); reject_mapped: + txq->hw_vlan_tci = hw_vlan_tci_prev; bus_dmamap_unload(txq->packet_dma_tag, *used_map); reject: /* Drop the packet on the floor. */ _______________________________________________ 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"
