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Message-ID: <1284136896.2267.100.camel@achroite.uk.solarflarecom.com>
Date: Fri, 10 Sep 2010 17:41:36 +0100
From: Ben Hutchings <bhutchings@...arflare.com>
To: David Miller <davem@...emloft.net>
Cc: netdev@...r.kernel.org, linux-net-drivers@...arflare.com
Subject: [PATCH net-next-2.6 06/10] sfc: Abstract channel and index lookup
for RX queues
Signed-off-by: Ben Hutchings <bhutchings@...arflare.com>
---
drivers/net/sfc/net_driver.h | 11 +++++++++++
drivers/net/sfc/nic.c | 31 +++++++++++++++++--------------
drivers/net/sfc/rx.c | 38 +++++++++++++++++++-------------------
3 files changed, 47 insertions(+), 33 deletions(-)
diff --git a/drivers/net/sfc/net_driver.h b/drivers/net/sfc/net_driver.h
index 64e7caa..89c6e02 100644
--- a/drivers/net/sfc/net_driver.h
+++ b/drivers/net/sfc/net_driver.h
@@ -943,6 +943,17 @@ struct efx_nic_type {
continue; \
else
+static inline struct efx_channel *
+efx_rx_queue_channel(struct efx_rx_queue *rx_queue)
+{
+ return rx_queue->channel;
+}
+
+static inline int efx_rx_queue_index(struct efx_rx_queue *rx_queue)
+{
+ return rx_queue->queue;
+}
+
/* Returns a pointer to the specified receive buffer in the RX
* descriptor queue.
*/
diff --git a/drivers/net/sfc/nic.c b/drivers/net/sfc/nic.c
index 8efe1ca..be4d552 100644
--- a/drivers/net/sfc/nic.c
+++ b/drivers/net/sfc/nic.c
@@ -539,8 +539,8 @@ void efx_nic_notify_rx_desc(struct efx_rx_queue *rx_queue)
wmb();
write_ptr = rx_queue->added_count & EFX_RXQ_MASK;
EFX_POPULATE_DWORD_1(reg, FRF_AZ_RX_DESC_WPTR_DWORD, write_ptr);
- efx_writed_page(rx_queue->efx, ®,
- FR_AZ_RX_DESC_UPD_DWORD_P0, rx_queue->queue);
+ efx_writed_page(rx_queue->efx, ®, FR_AZ_RX_DESC_UPD_DWORD_P0,
+ efx_rx_queue_index(rx_queue));
}
int efx_nic_probe_rx(struct efx_rx_queue *rx_queue)
@@ -561,7 +561,7 @@ void efx_nic_init_rx(struct efx_rx_queue *rx_queue)
netif_dbg(efx, hw, efx->net_dev,
"RX queue %d ring in special buffers %d-%d\n",
- rx_queue->queue, rx_queue->rxd.index,
+ efx_rx_queue_index(rx_queue), rx_queue->rxd.index,
rx_queue->rxd.index + rx_queue->rxd.entries - 1);
rx_queue->flushed = FLUSH_NONE;
@@ -575,9 +575,10 @@ void efx_nic_init_rx(struct efx_rx_queue *rx_queue)
FRF_AZ_RX_ISCSI_HDIG_EN, iscsi_digest_en,
FRF_AZ_RX_DESCQ_BUF_BASE_ID, rx_queue->rxd.index,
FRF_AZ_RX_DESCQ_EVQ_ID,
- rx_queue->channel->channel,
+ efx_rx_queue_channel(rx_queue)->channel,
FRF_AZ_RX_DESCQ_OWNER_ID, 0,
- FRF_AZ_RX_DESCQ_LABEL, rx_queue->queue,
+ FRF_AZ_RX_DESCQ_LABEL,
+ efx_rx_queue_index(rx_queue),
FRF_AZ_RX_DESCQ_SIZE,
__ffs(rx_queue->rxd.entries),
FRF_AZ_RX_DESCQ_TYPE, 0 /* kernel queue */ ,
@@ -585,7 +586,7 @@ void efx_nic_init_rx(struct efx_rx_queue *rx_queue)
FRF_AZ_RX_DESCQ_JUMBO, !is_b0,
FRF_AZ_RX_DESCQ_EN, 1);
efx_writeo_table(efx, &rx_desc_ptr, efx->type->rxd_ptr_tbl_base,
- rx_queue->queue);
+ efx_rx_queue_index(rx_queue));
}
static void efx_flush_rx_queue(struct efx_rx_queue *rx_queue)
@@ -598,7 +599,8 @@ static void efx_flush_rx_queue(struct efx_rx_queue *rx_queue)
/* Post a flush command */
EFX_POPULATE_OWORD_2(rx_flush_descq,
FRF_AZ_RX_FLUSH_DESCQ_CMD, 1,
- FRF_AZ_RX_FLUSH_DESCQ, rx_queue->queue);
+ FRF_AZ_RX_FLUSH_DESCQ,
+ efx_rx_queue_index(rx_queue));
efx_writeo(efx, &rx_flush_descq, FR_AZ_RX_FLUSH_DESCQ);
}
@@ -613,7 +615,7 @@ void efx_nic_fini_rx(struct efx_rx_queue *rx_queue)
/* Remove RX descriptor ring from card */
EFX_ZERO_OWORD(rx_desc_ptr);
efx_writeo_table(efx, &rx_desc_ptr, efx->type->rxd_ptr_tbl_base,
- rx_queue->queue);
+ efx_rx_queue_index(rx_queue));
/* Unpin RX descriptor ring */
efx_fini_special_buffer(efx, &rx_queue->rxd);
@@ -714,6 +716,7 @@ static void efx_handle_rx_not_ok(struct efx_rx_queue *rx_queue,
bool *rx_ev_pkt_ok,
bool *discard)
{
+ struct efx_channel *channel = efx_rx_queue_channel(rx_queue);
struct efx_nic *efx = rx_queue->efx;
bool rx_ev_buf_owner_id_err, rx_ev_ip_hdr_chksum_err;
bool rx_ev_tcp_udp_chksum_err, rx_ev_eth_crc_err;
@@ -746,14 +749,14 @@ static void efx_handle_rx_not_ok(struct efx_rx_queue *rx_queue,
/* Count errors that are not in MAC stats. Ignore expected
* checksum errors during self-test. */
if (rx_ev_frm_trunc)
- ++rx_queue->channel->n_rx_frm_trunc;
+ ++channel->n_rx_frm_trunc;
else if (rx_ev_tobe_disc)
- ++rx_queue->channel->n_rx_tobe_disc;
+ ++channel->n_rx_tobe_disc;
else if (!efx->loopback_selftest) {
if (rx_ev_ip_hdr_chksum_err)
- ++rx_queue->channel->n_rx_ip_hdr_chksum_err;
+ ++channel->n_rx_ip_hdr_chksum_err;
else if (rx_ev_tcp_udp_chksum_err)
- ++rx_queue->channel->n_rx_tcp_udp_chksum_err;
+ ++channel->n_rx_tcp_udp_chksum_err;
}
/* The frame must be discarded if any of these are true. */
@@ -769,7 +772,7 @@ static void efx_handle_rx_not_ok(struct efx_rx_queue *rx_queue,
netif_dbg(efx, rx_err, efx->net_dev,
" RX queue %d unexpected RX event "
EFX_QWORD_FMT "%s%s%s%s%s%s%s%s\n",
- rx_queue->queue, EFX_QWORD_VAL(*event),
+ efx_rx_queue_index(rx_queue), EFX_QWORD_VAL(*event),
rx_ev_buf_owner_id_err ? " [OWNER_ID_ERR]" : "",
rx_ev_ip_hdr_chksum_err ?
" [IP_HDR_CHKSUM_ERR]" : "",
@@ -1269,7 +1272,7 @@ int efx_nic_flush_queues(struct efx_nic *efx)
if (rx_queue->flushed != FLUSH_DONE)
netif_err(efx, hw, efx->net_dev,
"rx queue %d flush command timed out\n",
- rx_queue->queue);
+ efx_rx_queue_index(rx_queue));
rx_queue->flushed = FLUSH_DONE;
}
diff --git a/drivers/net/sfc/rx.c b/drivers/net/sfc/rx.c
index acb372e..1e6c8cf 100644
--- a/drivers/net/sfc/rx.c
+++ b/drivers/net/sfc/rx.c
@@ -341,7 +341,7 @@ static void efx_recycle_rx_buffer(struct efx_channel *channel,
*/
void efx_fast_push_rx_descriptors(struct efx_rx_queue *rx_queue)
{
- struct efx_channel *channel = rx_queue->channel;
+ struct efx_channel *channel = efx_rx_queue_channel(rx_queue);
unsigned fill_level;
int space, rc = 0;
@@ -364,7 +364,8 @@ void efx_fast_push_rx_descriptors(struct efx_rx_queue *rx_queue)
netif_vdbg(rx_queue->efx, rx_status, rx_queue->efx->net_dev,
"RX queue %d fast-filling descriptor ring from"
" level %d to level %d using %s allocation\n",
- rx_queue->queue, fill_level, rx_queue->fast_fill_limit,
+ efx_rx_queue_index(rx_queue), fill_level,
+ rx_queue->fast_fill_limit,
channel->rx_alloc_push_pages ? "page" : "skb");
do {
@@ -382,7 +383,7 @@ void efx_fast_push_rx_descriptors(struct efx_rx_queue *rx_queue)
netif_vdbg(rx_queue->efx, rx_status, rx_queue->efx->net_dev,
"RX queue %d fast-filled descriptor ring "
- "to level %d\n", rx_queue->queue,
+ "to level %d\n", efx_rx_queue_index(rx_queue),
rx_queue->added_count - rx_queue->removed_count);
out:
@@ -393,7 +394,7 @@ void efx_fast_push_rx_descriptors(struct efx_rx_queue *rx_queue)
void efx_rx_slow_fill(unsigned long context)
{
struct efx_rx_queue *rx_queue = (struct efx_rx_queue *)context;
- struct efx_channel *channel = rx_queue->channel;
+ struct efx_channel *channel = efx_rx_queue_channel(rx_queue);
/* Post an event to cause NAPI to run and refill the queue */
efx_nic_generate_fill_event(channel);
@@ -421,7 +422,7 @@ static void efx_rx_packet__check_len(struct efx_rx_queue *rx_queue,
netif_err(efx, rx_err, efx->net_dev,
" RX queue %d seriously overlength "
"RX event (0x%x > 0x%x+0x%x). Leaking\n",
- rx_queue->queue, len, max_len,
+ efx_rx_queue_index(rx_queue), len, max_len,
efx->type->rx_buffer_padding);
/* If this buffer was skb-allocated, then the meta
* data at the end of the skb will be trashed. So
@@ -434,10 +435,10 @@ static void efx_rx_packet__check_len(struct efx_rx_queue *rx_queue,
netif_err(efx, rx_err, efx->net_dev,
" RX queue %d overlength RX event "
"(0x%x > 0x%x)\n",
- rx_queue->queue, len, max_len);
+ efx_rx_queue_index(rx_queue), len, max_len);
}
- rx_queue->channel->n_rx_overlength++;
+ efx_rx_queue_channel(rx_queue)->n_rx_overlength++;
}
/* Pass a received packet up through the generic LRO stack
@@ -507,7 +508,7 @@ void efx_rx_packet(struct efx_rx_queue *rx_queue, unsigned int index,
unsigned int len, bool checksummed, bool discard)
{
struct efx_nic *efx = rx_queue->efx;
- struct efx_channel *channel = rx_queue->channel;
+ struct efx_channel *channel = efx_rx_queue_channel(rx_queue);
struct efx_rx_buffer *rx_buf;
bool leak_packet = false;
@@ -528,7 +529,7 @@ void efx_rx_packet(struct efx_rx_queue *rx_queue, unsigned int index,
netif_vdbg(efx, rx_status, efx->net_dev,
"RX queue %d received id %x at %llx+%x %s%s\n",
- rx_queue->queue, index,
+ efx_rx_queue_index(rx_queue), index,
(unsigned long long)rx_buf->dma_addr, len,
(checksummed ? " [SUMMED]" : ""),
(discard ? " [DISCARD]" : ""));
@@ -560,12 +561,11 @@ void efx_rx_packet(struct efx_rx_queue *rx_queue, unsigned int index,
*/
rx_buf->len = len;
out:
- if (rx_queue->channel->rx_pkt)
- __efx_rx_packet(rx_queue->channel,
- rx_queue->channel->rx_pkt,
- rx_queue->channel->rx_pkt_csummed);
- rx_queue->channel->rx_pkt = rx_buf;
- rx_queue->channel->rx_pkt_csummed = checksummed;
+ if (channel->rx_pkt)
+ __efx_rx_packet(channel,
+ channel->rx_pkt, channel->rx_pkt_csummed);
+ channel->rx_pkt = rx_buf;
+ channel->rx_pkt_csummed = checksummed;
}
/* Handle a received packet. Second half: Touches packet payload. */
@@ -654,7 +654,7 @@ int efx_probe_rx_queue(struct efx_rx_queue *rx_queue)
int rc;
netif_dbg(efx, probe, efx->net_dev,
- "creating RX queue %d\n", rx_queue->queue);
+ "creating RX queue %d\n", efx_rx_queue_index(rx_queue));
/* Allocate RX buffers */
rxq_size = EFX_RXQ_SIZE * sizeof(*rx_queue->buffer);
@@ -675,7 +675,7 @@ void efx_init_rx_queue(struct efx_rx_queue *rx_queue)
unsigned int max_fill, trigger, limit;
netif_dbg(rx_queue->efx, drv, rx_queue->efx->net_dev,
- "initialising RX queue %d\n", rx_queue->queue);
+ "initialising RX queue %d\n", efx_rx_queue_index(rx_queue));
/* Initialise ptr fields */
rx_queue->added_count = 0;
@@ -703,7 +703,7 @@ void efx_fini_rx_queue(struct efx_rx_queue *rx_queue)
struct efx_rx_buffer *rx_buf;
netif_dbg(rx_queue->efx, drv, rx_queue->efx->net_dev,
- "shutting down RX queue %d\n", rx_queue->queue);
+ "shutting down RX queue %d\n", efx_rx_queue_index(rx_queue));
del_timer_sync(&rx_queue->slow_fill);
efx_nic_fini_rx(rx_queue);
@@ -720,7 +720,7 @@ void efx_fini_rx_queue(struct efx_rx_queue *rx_queue)
void efx_remove_rx_queue(struct efx_rx_queue *rx_queue)
{
netif_dbg(rx_queue->efx, drv, rx_queue->efx->net_dev,
- "destroying RX queue %d\n", rx_queue->queue);
+ "destroying RX queue %d\n", efx_rx_queue_index(rx_queue));
efx_nic_remove_rx(rx_queue);
--
1.7.2.1
--
Ben Hutchings, Senior Software Engineer, Solarflare Communications
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.
--
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