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sfc: extend common GRO interface to support CHECKSUM_COMPLETE

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EF100 will use CHECKSUM_COMPLETE, but will also make use of
 efx_rx_packet_gro(), thus needs to be able to pass the checksum value
 into that function.
Drivers for older NICs pass in a csum of 0 to get the old semantics (use
 the RX flags for CHECKSUM_UNNECESSARY marking).

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Edward Cree 2020-06-29 14:36:56 +01:00 • committed by David S. Miller
parent 28abe8251b
commit 4d9c0a2d64
3 changed files with 10 additions and 5 deletions
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11
drivers/net/ethernet/sfc/rx_common.c
View file

@ -510,7 +510,7 @@ void efx_fast_push_rx_descriptors(struct efx_rx_queue *rx_queue, bool atomic)
*/
void
efx_rx_packet_gro(struct efx_channel *channel, struct efx_rx_buffer *rx_buf,
unsigned int n_frags, u8 *eh)
unsigned int n_frags, u8 *eh, __wsum csum)
{
struct napi_struct *napi = &channel->napi_str;
struct efx_nic *efx = channel->efx;
@ -528,8 +528,13 @@ efx_rx_packet_gro(struct efx_channel *channel, struct efx_rx_buffer *rx_buf,
if (efx->net_dev->features & NETIF_F_RXHASH)
skb_set_hash(skb, efx_rx_buf_hash(efx, eh),
PKT_HASH_TYPE_L3);
skb->ip_summed = ((rx_buf->flags & EFX_RX_PKT_CSUMMED) ?
CHECKSUM_UNNECESSARY : CHECKSUM_NONE);
if (csum) {
skb->csum = csum;
skb->ip_summed = CHECKSUM_COMPLETE;
} else {
skb->ip_summed = ((rx_buf->flags & EFX_RX_PKT_CSUMMED) ?
CHECKSUM_UNNECESSARY : CHECKSUM_NONE);
}
skb->csum_level = !!(rx_buf->flags & EFX_RX_PKT_CSUM_LEVEL);
for (;;) {