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| author | Ben Hutchings <bhutchings@solarflare.com> | 2008-05-16 21:15:06 +0100 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2008-05-22 05:59:25 -0400 |
| commit | f7f13b0b9253e21557ad090144a44f20860332f1 (patch) | |
| tree | 9d99ec82a0e09f8b55c96291bf9fb6c4a12e520c /drivers/net/sfc | |
| parent | 91ad757c2fc35ec79dd2c909dc6dc721b9c257f3 (diff) | |
| download | linux-3.10-f7f13b0b9253e21557ad090144a44f20860332f1.tar.gz linux-3.10-f7f13b0b9253e21557ad090144a44f20860332f1.tar.bz2 linux-3.10-f7f13b0b9253e21557ad090144a44f20860332f1.zip | |
sfc: Simplified efx_rx_calc_buffer_size() using get_order()
Merged it into its only caller, efx_init_channels().
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/net/sfc')
| -rw-r--r-- | drivers/net/sfc/efx.c | 29 |
1 files changed, 8 insertions, 21 deletions
diff --git a/drivers/net/sfc/efx.c b/drivers/net/sfc/efx.c index 48aae4702ba..1a065fcadc5 100644 --- a/drivers/net/sfc/efx.c +++ b/drivers/net/sfc/efx.c @@ -317,26 +317,6 @@ static void efx_remove_eventq(struct efx_channel *channel) * *************************************************************************/ -/* Setup per-NIC RX buffer parameters. - * Calculate the rx buffer allocation parameters required to support - * the current MTU, including padding for header alignment and overruns. - */ -static void efx_calc_rx_buffer_params(struct efx_nic *efx) -{ - unsigned int order, len; - - len = (max(EFX_PAGE_IP_ALIGN, NET_IP_ALIGN) + - EFX_MAX_FRAME_LEN(efx->net_dev->mtu) + - efx->type->rx_buffer_padding); - - /* Calculate page-order */ - for (order = 0; ((1u << order) * PAGE_SIZE) < len; ++order) - ; - - efx->rx_buffer_len = len; - efx->rx_buffer_order = order; -} - static int efx_probe_channel(struct efx_channel *channel) { struct efx_tx_queue *tx_queue; @@ -387,7 +367,14 @@ static int efx_init_channels(struct efx_nic *efx) struct efx_channel *channel; int rc = 0; - efx_calc_rx_buffer_params(efx); + /* Calculate the rx buffer allocation parameters required to + * support the current MTU, including padding for header + * alignment and overruns. + */ + efx->rx_buffer_len = (max(EFX_PAGE_IP_ALIGN, NET_IP_ALIGN) + + EFX_MAX_FRAME_LEN(efx->net_dev->mtu) + + efx->type->rx_buffer_padding); + efx->rx_buffer_order = get_order(efx->rx_buffer_len); /* Initialise the channels */ efx_for_each_channel(channel, efx) { |