static void net_tx_pkt_do_sw_csum(struct NetTxPkt *pkt)

{

    struct iovec *iov = &pkt->vec[NET_TX_PKT_L2HDR_FRAG];

    uint32_t csum_cntr;

    uint16_t csum = 0;

    uint32_t cso;

    /* num of iovec without vhdr */

    uint32_t iov_len = pkt->payload_frags + NET_TX_PKT_PL_START_FRAG - 1;

    uint16_t csl;

    struct ip_header *iphdr;

    size_t csum_offset = pkt->virt_hdr.csum_start + pkt->virt_hdr.csum_offset;



    /* Put zero to checksum field */

    iov_from_buf(iov, iov_len, csum_offset, &csum, sizeof csum);



    /* Calculate L4 TCP/UDP checksum */

    csl = pkt->payload_len;



    /* add pseudo header to csum */

    iphdr = pkt->vec[NET_TX_PKT_L3HDR_FRAG].iov_base;

    csum_cntr = eth_calc_ip4_pseudo_hdr_csum(iphdr, csl, &cso);



    /* data checksum */

    csum_cntr +=

        net_checksum_add_iov(iov, iov_len, pkt->virt_hdr.csum_start, csl, cso);



    /* Put the checksum obtained into the packet */

    csum = cpu_to_be16(net_checksum_finish(csum_cntr));

    iov_from_buf(iov, iov_len, csum_offset, &csum, sizeof csum);

}

static void net_tx_pkt_do_sw_csum(struct NetTxPkt *pkt)

{

    struct iovec *iov = &pkt->vec[NET_TX_PKT_L2HDR_FRAG];

    uint32_t csum_cntr;

    uint16_t csum = 0;

    uint32_t cso;

    

    uint32_t iov_len = pkt->payload_frags + NET_TX_PKT_PL_START_FRAG - 1;

    uint16_t csl;

    struct ip_header *iphdr;

    size_t csum_offset = pkt->virt_hdr.csum_start + pkt->virt_hdr.csum_offset;



    

    iov_from_buf(iov, iov_len, csum_offset, &csum, sizeof csum);



    

    csl = pkt->payload_len;



    

    iphdr = pkt->vec[NET_TX_PKT_L3HDR_FRAG].iov_base;

    csum_cntr = eth_calc_ip4_pseudo_hdr_csum(iphdr, csl, &cso);



    

    csum_cntr +=

        net_checksum_add_iov(iov, iov_len, pkt->virt_hdr.csum_start, csl, cso);



    

    csum = cpu_to_be16(net_checksum_finish(csum_cntr));

    iov_from_buf(iov, iov_len, csum_offset, &csum, sizeof csum);

}

    csum = cpu_to_be16(net_checksum_finish(csum_cntr));
static void FUNC_0(struct NetTxPkt *VAR_0)

{

    struct iovec *VAR_1 = &VAR_0->vec[NET_TX_PKT_L2HDR_FRAG];

    uint32_t csum_cntr;

    uint16_t csum = 0;

    uint32_t cso;

    

    uint32_t iov_len = VAR_0->payload_frags + NET_TX_PKT_PL_START_FRAG - 1;

    uint16_t csl;

    struct ip_header *VAR_2;

    size_t csum_offset = VAR_0->virt_hdr.csum_start + VAR_0->virt_hdr.csum_offset;



    

    iov_from_buf(VAR_1, iov_len, csum_offset, &csum, sizeof csum);



    

    csl = VAR_0->payload_len;



    

    VAR_2 = VAR_0->vec[NET_TX_PKT_L3HDR_FRAG].iov_base;

    csum_cntr = eth_calc_ip4_pseudo_hdr_csum(VAR_2, csl, &cso);



    

    csum_cntr +=

        net_checksum_add_iov(VAR_1, iov_len, VAR_0->virt_hdr.csum_start, csl, cso);



    

    csum = cpu_to_be16(net_checksum_finish(csum_cntr));

    iov_from_buf(VAR_1, iov_len, csum_offset, &csum, sizeof csum);

}

static void FUNC_0(struct NetTxPkt *VAR_0)
{ struct iovec *VAR_1 = &VAR_0->vec[NET_TX_PKT_L2HDR_FRAG]; uint32_t csum_cntr; uint16_t csum = 0; uint32_t cso; uint32_t iov_len = VAR_0->payload_frags + NET_TX_PKT_PL_START_FRAG - 1; uint16_t csl; struct ip_header *VAR_2; size_t csum_offset = VAR_0->virt_hdr.csum_start + VAR_0->virt_hdr.csum_offset; iov_from_buf(VAR_1, iov_len, csum_offset, &csum, sizeof csum); csl = VAR_0->payload_len; VAR_2 = VAR_0->vec[NET_TX_PKT_L3HDR_FRAG].iov_base; csum_cntr = eth_calc_ip4_pseudo_hdr_csum(VAR_2, csl, &cso); csum_cntr +=
net_checksum_add_iov(VAR_1, iov_len, VAR_0->virt_hdr.csum_start, csl, cso); csum = cpu_to_be16(net_checksum_finish(csum_cntr)); iov_from_buf(VAR_1, iov_len, csum_offset, &csum, sizeof csum); }