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NTB: MFV 90f9e934: reset tx_index on link toggle

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If the NTB link toggles, the driver could stop receiving due to the
tx_index not being set to 0 on the transmitting size on a link-up event.
This is due to the driver expecting the incoming data to start at the
beginning of the receive buffer and not at a random place.

Authored by:	Jon Mason
Obtained from:	Linux
Sponsored by:	EMC / Isilon Storage Division
This commit is contained in:
Conrad Meyer 2015-10-11 20:59:40 +00:00
parent 0125f2c1af
commit a30525bf65
1 changed files with 1 additions and 2 deletions
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3
sys/dev/ntb/if_ntb/if_ntb.c
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@ -562,7 +562,6 @@ ntb_transport_init_queue(struct ntb_netdev *nt, unsigned int qp_num)
qp->tx_max_frame = min(transport_mtu + sizeof(struct ntb_payload_header),
tx_size);
qp->tx_max_entry = tx_size / qp->tx_max_frame;
qp->tx_index = 0;
callout_init(&qp->link_work, 0);
callout_init(&qp->queue_full, 1);
@ -1192,7 +1191,6 @@ ntb_transport_setup_qp_mw(struct ntb_netdev *nt, unsigned int qp_num)
rx_size);
qp->rx_max_entry = rx_size / qp->rx_max_frame;
qp->rx_index = 0;
qp->tx_index = 0;
qp->remote_rx_info->entry = qp->rx_max_entry;
@ -1206,6 +1204,7 @@ ntb_transport_setup_qp_mw(struct ntb_netdev *nt, unsigned int qp_num)
qp->rx_pkts = 0;
qp->tx_pkts = 0;
qp->tx_index = 0;
}
static void