diff options
| author | Bin Meng <bin.meng@windriver.com> | 2020-12-11 17:35:12 +0800 |
|---|---|---|
| committer | Jason Wang <jasowang@redhat.com> | 2021-01-25 17:04:56 +0800 |
| commit | f574633529926697ced51b6865e5c50bbb78bf1b (patch) | |
| tree | 98d77919083dfcbec0247c6980c479d08bc07d3b /hw/net/ftgmac100.c | |
| parent | d97f11590a0f60cd911ace8bb68180b5a09a068d (diff) | |
net: checksum: Introduce fine control over checksum type
At present net_checksum_calculate() blindly calculates all types of
checksums (IP, TCP, UDP). Some NICs may have a per type setting in
their BDs to control what checksum should be offloaded. To support
such hardware behavior, introduce a 'csum_flag' parameter to the
net_checksum_calculate() API to allow fine control over what type
checksum is calculated.
Existing users of this API are updated accordingly.
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Diffstat (limited to 'hw/net/ftgmac100.c')
| -rw-r--r-- | hw/net/ftgmac100.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/hw/net/ftgmac100.c b/hw/net/ftgmac100.c index 782ff192ce..25685ba3a9 100644 --- a/hw/net/ftgmac100.c +++ b/hw/net/ftgmac100.c @@ -564,6 +564,7 @@ static void ftgmac100_do_tx(FTGMAC100State *s, uint32_t tx_ring, ptr += len; frame_size += len; if (bd.des0 & FTGMAC100_TXDES0_LTS) { + int csum = 0; /* Check for VLAN */ if (flags & FTGMAC100_TXDES1_INS_VLANTAG && @@ -573,8 +574,18 @@ static void ftgmac100_do_tx(FTGMAC100State *s, uint32_t tx_ring, } if (flags & FTGMAC100_TXDES1_IP_CHKSUM) { - net_checksum_calculate(s->frame, frame_size); + csum |= CSUM_IP; } + if (flags & FTGMAC100_TXDES1_TCP_CHKSUM) { + csum |= CSUM_TCP; + } + if (flags & FTGMAC100_TXDES1_UDP_CHKSUM) { + csum |= CSUM_UDP; + } + if (csum) { + net_checksum_calculate(s->frame, frame_size, csum); + } + /* Last buffer in frame. */ qemu_send_packet(qemu_get_queue(s->nic), s->frame, frame_size); ptr = s->frame; |