liquidio: store the L4 hash of rx packets in skb
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>
diff --git a/drivers/net/ethernet/cavium/liquidio/lio_main.c b/drivers/net/ethernet/cavium/liquidio/lio_main.c
index 13f67a3..b8b579d 100644
--- a/drivers/net/ethernet/cavium/liquidio/lio_main.c
+++ b/drivers/net/ethernet/cavium/liquidio/lio_main.c
@@ -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) &&