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hw/net/net_tx_pkt: Ignore ECN bit

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No segmentation should be performed if gso type is
VIRTIO_NET_HDR_GSO_NONE even if ECN bit is set.

Fixes: e263cd49c7 ("Packet abstraction for VMWARE network devices")
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1544
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Akihiko Odaki 2023-03-24 18:54:33 +09:00 • committed by Jason Wang
parent f4fdaf009c
commit 4cf3a63849
1 changed files with 4 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

6
hw/net/net_tx_pkt.c
View file

@ -796,11 +796,13 @@ bool net_tx_pkt_send_custom(struct NetTxPkt *pkt, bool offload,
{ {
assert(pkt); assert(pkt);
uint8_t gso_type = pkt->virt_hdr.gso_type & ~VIRTIO_NET_HDR_GSO_ECN;
/* /*
* Since underlying infrastructure does not support IP datagrams longer * Since underlying infrastructure does not support IP datagrams longer
* than 64K we should drop such packets and don't even try to send * than 64K we should drop such packets and don't even try to send
*/ */
if (VIRTIO_NET_HDR_GSO_NONE != pkt->virt_hdr.gso_type) { if (VIRTIO_NET_HDR_GSO_NONE != gso_type) {
if (pkt->payload_len > if (pkt->payload_len >
ETH_MAX_IP_DGRAM_LEN - ETH_MAX_IP_DGRAM_LEN -
pkt->vec[NET_TX_PKT_L3HDR_FRAG].iov_len) { pkt->vec[NET_TX_PKT_L3HDR_FRAG].iov_len) {
@ -808,7 +810,7 @@ bool net_tx_pkt_send_custom(struct NetTxPkt *pkt, bool offload,
} }
} }
if (offload || pkt->virt_hdr.gso_type == VIRTIO_NET_HDR_GSO_NONE) { if (offload || gso_type == VIRTIO_NET_HDR_GSO_NONE) {
if (!offload && pkt->virt_hdr.flags & VIRTIO_NET_HDR_F_NEEDS_CSUM) { if (!offload && pkt->virt_hdr.flags & VIRTIO_NET_HDR_F_NEEDS_CSUM) {
net_tx_pkt_do_sw_csum(pkt, &pkt->vec[NET_TX_PKT_L2HDR_FRAG], net_tx_pkt_do_sw_csum(pkt, &pkt->vec[NET_TX_PKT_L2HDR_FRAG],
pkt->payload_frags + NET_TX_PKT_PL_START_FRAG - 1, pkt->payload_frags + NET_TX_PKT_PL_START_FRAG - 1,