virtio_net.c (ea7735d97ba9064c448664429e249991ccd8aa77) virtio_net.c (7b0411ef4aa69c9256d6a2c289d0a2b320414633)
1/* A network driver using virtio.
2 *
3 * Copyright 2007 Rusty Russell <rusty@rustcorp.com.au> IBM Corporation
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.

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1070 return;
1071
1072 u64_stats_update_begin(&stats->tx_syncp);
1073 stats->tx_bytes += bytes;
1074 stats->tx_packets += packets;
1075 u64_stats_update_end(&stats->tx_syncp);
1076}
1077
1/* A network driver using virtio.
2 *
3 * Copyright 2007 Rusty Russell <rusty@rustcorp.com.au> IBM Corporation
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.

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1070 return;
1071
1072 u64_stats_update_begin(&stats->tx_syncp);
1073 stats->tx_bytes += bytes;
1074 stats->tx_packets += packets;
1075 u64_stats_update_end(&stats->tx_syncp);
1076}
1077
1078static void virtnet_poll_cleantx(struct receive_queue *rq)
1079{
1080 struct virtnet_info *vi = rq->vq->vdev->priv;
1081 unsigned int index = vq2rxq(rq->vq);
1082 struct send_queue *sq = &vi->sq[index];
1083 struct netdev_queue *txq = netdev_get_tx_queue(vi->dev, index);
1084
1085 if (!sq->napi.weight)
1086 return;
1087
1088 if (__netif_tx_trylock(txq)) {
1089 free_old_xmit_skbs(sq);
1090 __netif_tx_unlock(txq);
1091 }
1092
1093 if (sq->vq->num_free >= 2 + MAX_SKB_FRAGS)
1094 netif_tx_wake_queue(txq);
1095}
1096
1078static int virtnet_poll(struct napi_struct *napi, int budget)
1079{
1080 struct receive_queue *rq =
1081 container_of(napi, struct receive_queue, napi);
1082 unsigned int received;
1083
1097static int virtnet_poll(struct napi_struct *napi, int budget)
1098{
1099 struct receive_queue *rq =
1100 container_of(napi, struct receive_queue, napi);
1101 unsigned int received;
1102
1103 virtnet_poll_cleantx(rq);
1104
1084 received = virtnet_receive(rq, budget);
1085
1086 /* Out of packets? */
1087 if (received < budget)
1088 virtqueue_napi_complete(napi, rq->vq, received);
1089
1090 return received;
1091}

--- 1599 unchanged lines hidden --- 		1105 received = virtnet_receive(rq, budget);
1106
1107 /* Out of packets? */
1108 if (received < budget)
1109 virtqueue_napi_complete(napi, rq->vq, received);
1110
1111 return received;
1112}

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