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Date: Sun, 30 Nov 2014 17:13:08 +0200 From: "Michael S. Tsirkin" <mst@...hat.com> To: linux-kernel@...r.kernel.org Cc: David Miller <davem@...emloft.net>, cornelia.huck@...ibm.com, rusty@....ibm.com, nab@...ux-iscsi.org, pbonzini@...hat.com, thuth@...ux.vnet.ibm.com, dahi@...ux.vnet.ibm.com, Daniel Borkmann <dborkman@...hat.com>, Atzm Watanabe <atzm@...atosphere.co.jp>, Hannes Frederic Sowa <hannes@...essinduktion.org>, Eric Dumazet <edumazet@...gle.com>, Tom Herbert <therbert@...gle.com>, netdev@...r.kernel.org Subject: [PATCH v7 46/46] af_packet: virtio 1.0 stubs This merely fixes sparse warnings, without actually adding support for the new APIs. Still working out the best way to enable the new functionality. Signed-off-by: Michael S. Tsirkin <mst@...hat.com> --- net/packet/af_packet.c | 35 ++++++++++++++++++++++------------- 1 file changed, 22 insertions(+), 13 deletions(-) diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c index 87d20f4..d4a877e 100644 --- a/net/packet/af_packet.c +++ b/net/packet/af_packet.c @@ -2444,13 +2444,15 @@ static int packet_snd(struct socket *sock, struct msghdr *msg, size_t len) goto out_unlock; if ((vnet_hdr.flags & VIRTIO_NET_HDR_F_NEEDS_CSUM) && - (vnet_hdr.csum_start + vnet_hdr.csum_offset + 2 > - vnet_hdr.hdr_len)) - vnet_hdr.hdr_len = vnet_hdr.csum_start + - vnet_hdr.csum_offset + 2; + (__virtio16_to_cpu(false, vnet_hdr.csum_start) + + __virtio16_to_cpu(false, vnet_hdr.csum_offset) + 2 > + __virtio16_to_cpu(false, vnet_hdr.hdr_len))) + vnet_hdr.hdr_len = __cpu_to_virtio16(false, + __virtio16_to_cpu(false, vnet_hdr.csum_start) + + __virtio16_to_cpu(false, vnet_hdr.csum_offset) + 2); err = -EINVAL; - if (vnet_hdr.hdr_len > len) + if (__virtio16_to_cpu(false, vnet_hdr.hdr_len) > len) goto out_unlock; if (vnet_hdr.gso_type != VIRTIO_NET_HDR_GSO_NONE) { @@ -2492,7 +2494,8 @@ static int packet_snd(struct socket *sock, struct msghdr *msg, size_t len) err = -ENOBUFS; hlen = LL_RESERVED_SPACE(dev); tlen = dev->needed_tailroom; - skb = packet_alloc_skb(sk, hlen + tlen, hlen, len, vnet_hdr.hdr_len, + skb = packet_alloc_skb(sk, hlen + tlen, hlen, len, + __virtio16_to_cpu(false, vnet_hdr.hdr_len), msg->msg_flags & MSG_DONTWAIT, &err); if (skb == NULL) goto out_unlock; @@ -2534,14 +2537,16 @@ static int packet_snd(struct socket *sock, struct msghdr *msg, size_t len) if (po->has_vnet_hdr) { if (vnet_hdr.flags & VIRTIO_NET_HDR_F_NEEDS_CSUM) { - if (!skb_partial_csum_set(skb, vnet_hdr.csum_start, - vnet_hdr.csum_offset)) { + u16 s = __virtio16_to_cpu(false, vnet_hdr.csum_start); + u16 o = __virtio16_to_cpu(false, vnet_hdr.csum_offset); + if (!skb_partial_csum_set(skb, s, o)) { err = -EINVAL; goto out_free; } } - skb_shinfo(skb)->gso_size = vnet_hdr.gso_size; + skb_shinfo(skb)->gso_size = + __virtio16_to_cpu(false, vnet_hdr.gso_size); skb_shinfo(skb)->gso_type = gso_type; /* Header must be checked, and gso_segs computed. */ @@ -2912,8 +2917,10 @@ static int packet_recvmsg(struct kiocb *iocb, struct socket *sock, struct skb_shared_info *sinfo = skb_shinfo(skb); /* This is a hint as to how much should be linear. */ - vnet_hdr.hdr_len = skb_headlen(skb); - vnet_hdr.gso_size = sinfo->gso_size; + vnet_hdr.hdr_len = + __cpu_to_virtio16(false, skb_headlen(skb)); + vnet_hdr.gso_size = + __cpu_to_virtio16(false, sinfo->gso_size); if (sinfo->gso_type & SKB_GSO_TCPV4) vnet_hdr.gso_type = VIRTIO_NET_HDR_GSO_TCPV4; else if (sinfo->gso_type & SKB_GSO_TCPV6) @@ -2931,8 +2938,10 @@ static int packet_recvmsg(struct kiocb *iocb, struct socket *sock, if (skb->ip_summed == CHECKSUM_PARTIAL) { vnet_hdr.flags = VIRTIO_NET_HDR_F_NEEDS_CSUM; - vnet_hdr.csum_start = skb_checksum_start_offset(skb); - vnet_hdr.csum_offset = skb->csum_offset; + vnet_hdr.csum_start = __cpu_to_virtio16(false, + skb_checksum_start_offset(skb)); + vnet_hdr.csum_offset = __cpu_to_virtio16(false, + skb->csum_offset); } else if (skb->ip_summed == CHECKSUM_UNNECESSARY) { vnet_hdr.flags = VIRTIO_NET_HDR_F_DATA_VALID; } /* else everything is zero */ -- MST -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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