diff options
| author | Dmitry Kravkov <dmitry@broadcom.com> | 2010-09-12 05:48:28 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-09-13 20:02:53 -0700 |
| commit | 251415808306a19be93ec93268e2985f10d3db8b (patch) | |
| tree | 176b64ef9f742ae0ebcfa4eceae44859e01e4a1e /drivers/net | |
| parent | 441993da47777d961300c070fe1210600af48ad8 (diff) | |
| download | linux-251415808306a19be93ec93268e2985f10d3db8b.tar.gz linux-251415808306a19be93ec93268e2985f10d3db8b.tar.bz2 linux-251415808306a19be93ec93268e2985f10d3db8b.zip | |
bnx2x: Spread rx buffers between allocated queues
Default number of rx buffers will be divided equally
between allocated queues. This will decrease amount of
pre-allocated buffers on systems with multiple CPUs.
User can override this behavior with ethtool -G.
Minimum amount of rx buffers per queue set to 128.
Reported-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/bnx2x/bnx2x.h | 5 | ||||
| -rw-r--r-- | drivers/net/bnx2x/bnx2x_cmn.c | 6 | ||||
| -rw-r--r-- | drivers/net/bnx2x/bnx2x_ethtool.c | 10 | ||||
| -rw-r--r-- | drivers/net/bnx2x/bnx2x_main.c | 1 |
4 files changed, 17 insertions, 5 deletions
diff --git a/drivers/net/bnx2x/bnx2x.h b/drivers/net/bnx2x/bnx2x.h index b6aaf22a1b84..64329c5fbdea 100644 --- a/drivers/net/bnx2x/bnx2x.h +++ b/drivers/net/bnx2x/bnx2x.h @@ -20,8 +20,8 @@ * (you will need to reboot afterwards) */ /* #define BNX2X_STOP_ON_ERROR */ -#define DRV_MODULE_VERSION "1.52.53-6" -#define DRV_MODULE_RELDATE "2010/09/07" +#define DRV_MODULE_VERSION "1.52.53-7" +#define DRV_MODULE_RELDATE "2010/09/12" #define BNX2X_BC_VER 0x040200 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE) @@ -369,6 +369,7 @@ struct bnx2x_fastpath { #define NUM_RX_BD (RX_DESC_CNT * NUM_RX_RINGS) #define MAX_RX_BD (NUM_RX_BD - 1) #define MAX_RX_AVAIL (MAX_RX_DESC_CNT * NUM_RX_RINGS - 2) +#define MIN_RX_AVAIL 128 #define NEXT_RX_IDX(x) ((((x) & RX_DESC_MASK) == \ (MAX_RX_DESC_CNT - 1)) ? (x) + 3 : (x) + 1) #define RX_BD(x) ((x) & MAX_RX_BD) diff --git a/drivers/net/bnx2x/bnx2x_cmn.c b/drivers/net/bnx2x/bnx2x_cmn.c index 7f1d291eaaa5..efc7be4aefb5 100644 --- a/drivers/net/bnx2x/bnx2x_cmn.c +++ b/drivers/net/bnx2x/bnx2x_cmn.c @@ -781,6 +781,10 @@ void bnx2x_init_rx_rings(struct bnx2x *bp) ETH_MAX_AGGREGATION_QUEUES_E1H; u16 ring_prod, cqe_ring_prod; int i, j; + int rx_ring_size = bp->rx_ring_size ? bp->rx_ring_size : + MAX_RX_AVAIL/bp->num_queues; + + rx_ring_size = max_t(int, MIN_RX_AVAIL, rx_ring_size); bp->rx_buf_size = bp->dev->mtu + ETH_OVREHEAD + BNX2X_RX_ALIGN; DP(NETIF_MSG_IFUP, @@ -883,7 +887,7 @@ void bnx2x_init_rx_rings(struct bnx2x *bp) /* Allocate BDs and initialize BD ring */ fp->rx_comp_cons = 0; cqe_ring_prod = ring_prod = 0; - for (i = 0; i < bp->rx_ring_size; i++) { + for (i = 0; i < rx_ring_size; i++) { if (bnx2x_alloc_rx_skb(bp, fp, ring_prod) < 0) { BNX2X_ERR("was only able to allocate " "%d rx skbs on queue[%d]\n", i, j); diff --git a/drivers/net/bnx2x/bnx2x_ethtool.c b/drivers/net/bnx2x/bnx2x_ethtool.c index 6f939c5a0089..d9748e97fad3 100644 --- a/drivers/net/bnx2x/bnx2x_ethtool.c +++ b/drivers/net/bnx2x/bnx2x_ethtool.c @@ -961,7 +961,14 @@ static void bnx2x_get_ringparam(struct net_device *dev, ering->rx_mini_max_pending = 0; ering->rx_jumbo_max_pending = 0; - ering->rx_pending = bp->rx_ring_size; + if (bp->rx_ring_size) + ering->rx_pending = bp->rx_ring_size; + else + if (bp->state == BNX2X_STATE_OPEN && bp->num_queues) + ering->rx_pending = MAX_RX_AVAIL/bp->num_queues; + else + ering->rx_pending = MAX_RX_AVAIL; + ering->rx_mini_pending = 0; ering->rx_jumbo_pending = 0; @@ -981,6 +988,7 @@ static int bnx2x_set_ringparam(struct net_device *dev, } if ((ering->rx_pending > MAX_RX_AVAIL) || + (ering->rx_pending < MIN_RX_AVAIL) || (ering->tx_pending > MAX_TX_AVAIL) || (ering->tx_pending <= MAX_SKB_FRAGS + 4)) return -EINVAL; diff --git a/drivers/net/bnx2x/bnx2x_main.c b/drivers/net/bnx2x/bnx2x_main.c index 7ba3a6d96fd5..67587fe9e358 100644 --- a/drivers/net/bnx2x/bnx2x_main.c +++ b/drivers/net/bnx2x/bnx2x_main.c @@ -6619,7 +6619,6 @@ static int __devinit bnx2x_init_bp(struct bnx2x *bp) bp->mrrs = mrrs; bp->tx_ring_size = MAX_TX_AVAIL; - bp->rx_ring_size = MAX_RX_AVAIL; bp->rx_csum = 1; |