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liquidio: store the L4 hash of rx packets in skb

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Store the L4 hash of received packets in the skb; the hash is computed in
the NIC firmware.

Signed-off-by: Prasad Kanneganti <prasad.kanneganti@cavium.com>
Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com>
Signed-off-by: Derek Chickles <derek.chickles@cavium.com>
Signed-off-by: Satanand Burla <satananda.burla@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Prasad Kanneganti 2017-01-09 14:42:40 -08:00 committed by David S. Miller
parent 5bd36a6f02
commit de28c99d71
3 changed files with 33 additions and 3 deletions
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18
drivers/net/ethernet/cavium/liquidio/lio_main.c
View File

@ -2263,6 +2263,7 @@ liquidio_push_packet(u32 octeon_id __attribute__((unused)),
struct skb_shared_hwtstamps *shhwtstamps;
u64 ns;
u16 vtag = 0;
u32 r_dh_off;
struct net_device *netdev = (struct net_device *)arg;
struct octeon_droq *droq = container_of(param, struct octeon_droq,
napi);
@ -2308,6 +2309,8 @@ liquidio_push_packet(u32 octeon_id __attribute__((unused)),
put_page(pg_info->page);
}
r_dh_off = (rh->r_dh.len - 1) * BYTES_PER_DHLEN_UNIT;
if (((oct->chip_id == OCTEON_CN66XX) ||
(oct->chip_id == OCTEON_CN68XX)) &&
ptp_enable) {
@ -2320,16 +2323,27 @@ liquidio_push_packet(u32 octeon_id __attribute__((unused)),
/* Nanoseconds are in the first 64-bits
* of the packet.
*/
memcpy(&ns, (skb->data), sizeof(ns));
memcpy(&ns, (skb->data + r_dh_off),
sizeof(ns));
r_dh_off -= BYTES_PER_DHLEN_UNIT;
shhwtstamps = skb_hwtstamps(skb);
shhwtstamps->hwtstamp =
ns_to_ktime(ns +
lio->ptp_adjust);
}
skb_pull(skb, sizeof(ns));
}
}
if (rh->r_dh.has_hash) {
__be32 *hash_be = (__be32 *)(skb->data + r_dh_off);
u32 hash = be32_to_cpu(*hash_be);
skb_set_hash(skb, hash, PKT_HASH_TYPE_L4);
r_dh_off -= BYTES_PER_DHLEN_UNIT;
}
skb_pull(skb, rh->r_dh.len * BYTES_PER_DHLEN_UNIT);
skb->protocol = eth_type_trans(skb, skb->dev);
if ((netdev->features & NETIF_F_RXCSUM) &&
(((rh->r_dh.encap_on) &&

16
drivers/net/ethernet/cavium/liquidio/lio_vf_main.c
View File

@ -1497,6 +1497,7 @@ liquidio_push_packet(u32 octeon_id __attribute__((unused)),
struct net_device *netdev = (struct net_device *)arg;
struct sk_buff *skb = (struct sk_buff *)skbuff;
u16 vtag = 0;
u32 r_dh_off;
if (netdev) {
struct lio *lio = GET_LIO(netdev);
@ -1540,7 +1541,20 @@ liquidio_push_packet(u32 octeon_id __attribute__((unused)),
put_page(pg_info->page);
}
skb_pull(skb, rh->r_dh.len * 8);
r_dh_off = (rh->r_dh.len - 1) * BYTES_PER_DHLEN_UNIT;
if (rh->r_dh.has_hwtstamp)
r_dh_off -= BYTES_PER_DHLEN_UNIT;
if (rh->r_dh.has_hash) {
__be32 *hash_be = (__be32 *)(skb->data + r_dh_off);
u32 hash = be32_to_cpu(*hash_be);
skb_set_hash(skb, hash, PKT_HASH_TYPE_L4);
r_dh_off -= BYTES_PER_DHLEN_UNIT;
}
skb_pull(skb, rh->r_dh.len * BYTES_PER_DHLEN_UNIT);
skb->protocol = eth_type_trans(skb, skb->dev);
if ((netdev->features & NETIF_F_RXCSUM) &&

2
drivers/net/ethernet/cavium/liquidio/liquidio_common.h
View File

@ -98,6 +98,8 @@ enum octeon_tag_type {
#define CVM_DRV_INVALID_APP (CVM_DRV_APP_START + 0x2)
#define CVM_DRV_APP_END (CVM_DRV_INVALID_APP - 1)
#define BYTES_PER_DHLEN_UNIT 8
static inline u32 incr_index(u32 index, u32 count, u32 max)
{
if ((index + count) >= max)