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sfc: set csum_level for encapsulated packets

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Set the csum_level for encapsulated packets where the encapsulation
 type, l3 class and l4 class are sets that need it.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jon Cooper 2017-02-08 16:51:02 +00:00 committed by David S. Miller
parent a0ee354148
commit da50ae2eae
3 changed files with 25 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

23
drivers/net/ethernet/sfc/ef10.c
View file

@ -3339,9 +3339,26 @@ static int efx_ef10_handle_rx_event(struct efx_channel *channel,
rx_l3_class, rx_l4_class,
rx_encap_hdr, event);
} else {
if (rx_l4_class == ESE_DZ_L4_CLASS_TCP ||
rx_l4_class == ESE_DZ_L4_CLASS_UDP)
flags |= EFX_RX_PKT_CSUMMED;
bool tcpudp = rx_l4_class == ESE_DZ_L4_CLASS_TCP ||
rx_l4_class == ESE_DZ_L4_CLASS_UDP;
switch (rx_encap_hdr) {
case ESE_EZ_ENCAP_HDR_VXLAN: /* VxLAN or GENEVE */
flags |= EFX_RX_PKT_CSUMMED; /* outer UDP csum */
if (tcpudp)
flags |= EFX_RX_PKT_CSUM_LEVEL; /* inner L4 */
break;
case ESE_EZ_ENCAP_HDR_GRE:
case ESE_EZ_ENCAP_HDR_NONE:
if (tcpudp)
flags |= EFX_RX_PKT_CSUMMED;
break;
default:
netdev_WARN(efx->net_dev,
"unknown encapsulation type: event="
EFX_QWORD_FMT "\n",
EFX_QWORD_VAL(*event));
}
}
if (rx_l4_class == ESE_DZ_L4_CLASS_TCP)

1
drivers/net/ethernet/sfc/net_driver.h
View file

@ -307,6 +307,7 @@ struct efx_rx_buffer {
#define EFX_RX_PKT_DISCARD 0x0004
#define EFX_RX_PKT_TCP 0x0040
#define EFX_RX_PKT_PREFIX_LEN 0x0080 /* length is in prefix only */
#define EFX_RX_PKT_CSUM_LEVEL 0x0200
/**
* struct efx_rx_page_state - Page-based rx buffer state

5
drivers/net/ethernet/sfc/rx.c
View file

@ -434,6 +434,7 @@ efx_rx_packet_gro(struct efx_channel *channel, struct efx_rx_buffer *rx_buf,
PKT_HASH_TYPE_L3);
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 (;;) {
skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags,
@ -621,8 +622,10 @@ static void efx_rx_deliver(struct efx_channel *channel, u8 *eh,
/* Set the SKB flags */
skb_checksum_none_assert(skb);
if (likely(rx_buf->flags & EFX_RX_PKT_CSUMMED))
if (likely(rx_buf->flags & EFX_RX_PKT_CSUMMED)) {
skb->ip_summed = CHECKSUM_UNNECESSARY;
skb->csum_level = !!(rx_buf->flags & EFX_RX_PKT_CSUM_LEVEL);
}
efx_rx_skb_attach_timestamp(channel, skb);