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igb: Implement Tx SCTP CSO

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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 11:43:28 +09:00 committed by Jason Wang
parent 907209e311
commit f199b13bc1
3 changed files with 33 additions and 5 deletions
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12
hw/net/igb_core.c
View file

@ -440,8 +440,9 @@ igb_tx_insert_vlan(IGBCore *core, uint16_t qn, struct igb_tx *tx,
static bool
igb_setup_tx_offloads(IGBCore *core, struct igb_tx *tx)
{
uint32_t idx = (tx->first_olinfo_status >> 4) & 1;
if (tx->first_cmd_type_len & E1000_ADVTXD_DCMD_TSE) {
uint32_t idx = (tx->first_olinfo_status >> 4) & 1;
uint32_t mss = tx->ctx[idx].mss_l4len_idx >> E1000_ADVTXD_MSS_SHIFT;
if (!net_tx_pkt_build_vheader(tx->tx_pkt, true, true, mss)) {
return false;
@ -452,10 +453,11 @@ igb_setup_tx_offloads(IGBCore *core, struct igb_tx *tx)
return true;
}
if (tx->first_olinfo_status & E1000_ADVTXD_POTS_TXSM) {
if (!net_tx_pkt_build_vheader(tx->tx_pkt, false, true, 0)) {
return false;
}
if ((tx->first_olinfo_status & E1000_ADVTXD_POTS_TXSM) &&
!((tx->ctx[idx].type_tucmd_mlhl & E1000_ADVTXD_TUCMD_L4T_SCTP) ?
net_tx_pkt_update_sctp_checksum(tx->tx_pkt) :
net_tx_pkt_build_vheader(tx->tx_pkt, false, true, 0))) {
return false;
}
if (tx->first_olinfo_status & E1000_ADVTXD_POTS_IXSM) {

18
hw/net/net_tx_pkt.c
View file

@ -16,6 +16,7 @@
*/
#include "qemu/osdep.h"
#include "qemu/crc32c.h"
#include "net/eth.h"
#include "net/checksum.h"
#include "net/tap.h"
@ -135,6 +136,23 @@ void net_tx_pkt_update_ip_checksums(struct NetTxPkt *pkt)
pkt->virt_hdr.csum_offset, &csum, sizeof(csum));
}
bool net_tx_pkt_update_sctp_checksum(struct NetTxPkt *pkt)
{
uint32_t csum = 0;
struct iovec *pl_start_frag = pkt->vec + NET_TX_PKT_PL_START_FRAG;
if (iov_from_buf(pl_start_frag, pkt->payload_frags, 8, &csum, sizeof(csum)) < sizeof(csum)) {
return false;
}
csum = cpu_to_le32(iov_crc32c(0xffffffff, pl_start_frag, pkt->payload_frags));
if (iov_from_buf(pl_start_frag, pkt->payload_frags, 8, &csum, sizeof(csum)) < sizeof(csum)) {
return false;
}
return true;
}
static void net_tx_pkt_calculate_hdr_len(struct NetTxPkt *pkt)
{
pkt->hdr_len = pkt->vec[NET_TX_PKT_L2HDR_FRAG].iov_len +

8
hw/net/net_tx_pkt.h
View file

@ -116,6 +116,14 @@ void net_tx_pkt_update_ip_checksums(struct NetTxPkt *pkt);
*/
void net_tx_pkt_update_ip_hdr_checksum(struct NetTxPkt *pkt);
/**
* Calculate the SCTP checksum.
*
* @pkt: packet
*
*/
bool net_tx_pkt_update_sctp_checksum(struct NetTxPkt *pkt);
/**
* get length of all populated data.
*