bnx2x: add support for receive hashing
Add support to bnx2x to extract Toeplitz hash out of the receive
descriptor for use in skb->rxhash.
Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/bnx2x_main.c b/drivers/net/bnx2x_main.c
index 0c6dba2..613f727 100644
--- a/drivers/net/bnx2x_main.c
+++ b/drivers/net/bnx2x_main.c
@@ -1582,7 +1582,7 @@
struct sw_rx_bd *rx_buf = NULL;
struct sk_buff *skb;
union eth_rx_cqe *cqe;
- u8 cqe_fp_flags;
+ u8 cqe_fp_flags, cqe_fp_status_flags;
u16 len, pad;
comp_ring_cons = RCQ_BD(sw_comp_cons);
@@ -1598,6 +1598,7 @@
cqe = &fp->rx_comp_ring[comp_ring_cons];
cqe_fp_flags = cqe->fast_path_cqe.type_error_flags;
+ cqe_fp_status_flags = cqe->fast_path_cqe.status_flags;
DP(NETIF_MSG_RX_STATUS, "CQE type %x err %x status %x"
" queue %x vlan %x len %u\n", CQE_TYPE(cqe_fp_flags),
@@ -1727,6 +1728,12 @@
skb->protocol = eth_type_trans(skb, bp->dev);
+ if ((bp->dev->features & ETH_FLAG_RXHASH) &&
+ (cqe_fp_status_flags &
+ ETH_FAST_PATH_RX_CQE_RSS_HASH_FLG))
+ skb->rxhash = le32_to_cpu(
+ cqe->fast_path_cqe.rss_hash_result);
+
skb->ip_summed = CHECKSUM_NONE;
if (bp->rx_csum) {
if (likely(BNX2X_RX_CSUM_OK(cqe)))
@@ -5750,10 +5757,10 @@
u32 offset;
u16 max_agg_size;
- if (is_multi(bp)) {
- tstorm_config.config_flags = MULTI_FLAGS(bp);
+ tstorm_config.config_flags = RSS_FLAGS(bp);
+
+ if (is_multi(bp))
tstorm_config.rss_result_mask = MULTI_MASK;
- }
/* Enable TPA if needed */
if (bp->flags & TPA_ENABLE_FLAG)
@@ -6629,10 +6636,8 @@
bnx2x_init_block(bp, PBF_BLOCK, COMMON_STAGE);
REG_WR(bp, SRC_REG_SOFT_RST, 1);
- for (i = SRC_REG_KEYRSS0_0; i <= SRC_REG_KEYRSS1_9; i += 4) {
- REG_WR(bp, i, 0xc0cac01a);
- /* TODO: replace with something meaningful */
- }
+ for (i = SRC_REG_KEYRSS0_0; i <= SRC_REG_KEYRSS1_9; i += 4)
+ REG_WR(bp, i, random32());
bnx2x_init_block(bp, SRCH_BLOCK, COMMON_STAGE);
#ifdef BCM_CNIC
REG_WR(bp, SRC_REG_KEYSEARCH_0, 0x63285672);
@@ -11001,6 +11006,11 @@
changed = 1;
}
+ if (data & ETH_FLAG_RXHASH)
+ dev->features |= NETIF_F_RXHASH;
+ else
+ dev->features &= ~NETIF_F_RXHASH;
+
if (changed && netif_running(dev)) {
bnx2x_nic_unload(bp, UNLOAD_NORMAL);
rc = bnx2x_nic_load(bp, LOAD_NORMAL);