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hw/net/net_rx_pkt: Enforce alignment for eth_header

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eth_strip_vlan and eth_strip_vlan_ex refers to ehdr_buf as struct
eth_header. Enforce alignment for the structure.

Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Sriram Yagnaraman <sriram.yagnaraman@est.tech>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Akihiko Odaki 2023-05-23 11:43:23 +09:00 • committed by Jason Wang
parent aaa8a15c96
commit 7edf2f1d54
1 changed files with 7 additions and 4 deletions
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11
hw/net/net_rx_pkt.c
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@ -23,7 +23,10 @@
struct NetRxPkt { struct NetRxPkt {
struct virtio_net_hdr virt_hdr; struct virtio_net_hdr virt_hdr;
uint8_t ehdr_buf[sizeof(struct eth_header) + sizeof(struct vlan_header)]; struct {
struct eth_header eth;
struct vlan_header vlan;
} ehdr_buf;
struct iovec *vec; struct iovec *vec;
uint16_t vec_len_total; uint16_t vec_len_total;
uint16_t vec_len; uint16_t vec_len;
@ -89,7 +92,7 @@ net_rx_pkt_pull_data(struct NetRxPkt *pkt,
if (pkt->ehdr_buf_len) { if (pkt->ehdr_buf_len) {
net_rx_pkt_iovec_realloc(pkt, iovcnt + 1); net_rx_pkt_iovec_realloc(pkt, iovcnt + 1);
pkt->vec[0].iov_base = pkt->ehdr_buf; pkt->vec[0].iov_base = &pkt->ehdr_buf;
pkt->vec[0].iov_len = pkt->ehdr_buf_len; pkt->vec[0].iov_len = pkt->ehdr_buf_len;
pkt->tot_len = pllen + pkt->ehdr_buf_len; pkt->tot_len = pllen + pkt->ehdr_buf_len;
@ -120,7 +123,7 @@ void net_rx_pkt_attach_iovec(struct NetRxPkt *pkt,
assert(pkt); assert(pkt);
if (strip_vlan) { if (strip_vlan) {
pkt->ehdr_buf_len = eth_strip_vlan(iov, iovcnt, iovoff, pkt->ehdr_buf, pkt->ehdr_buf_len = eth_strip_vlan(iov, iovcnt, iovoff, &pkt->ehdr_buf,
&ploff, &tci); &ploff, &tci);
} else { } else {
pkt->ehdr_buf_len = 0; pkt->ehdr_buf_len = 0;
@ -142,7 +145,7 @@ void net_rx_pkt_attach_iovec_ex(struct NetRxPkt *pkt,
if (strip_vlan) { if (strip_vlan) {
pkt->ehdr_buf_len = eth_strip_vlan_ex(iov, iovcnt, iovoff, vet, pkt->ehdr_buf_len = eth_strip_vlan_ex(iov, iovcnt, iovoff, vet,
pkt->ehdr_buf, &pkt->ehdr_buf,
&ploff, &tci); &ploff, &tci);
} else { } else {
pkt->ehdr_buf_len = 0; pkt->ehdr_buf_len = 0;