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Date: Tue, 17 Jun 2008 11:33:32 +0300
From: "Eilon Greenstein" <eilong@...adcom.com>
To: netdev <netdev@...r.kernel.org>
cc: "Michael Chan" <mchan@...adcom.com>,
"Vladislav Zolotarov" <vladz@...adcom.com>
Subject: [PATCH net-next 08/12]bnx2x: Add TPA, Broadcoms HW LRO
The TPA stands for Transparent Packet Aggregation. When enabled, the FW
aggregate in-order TCP packets according to the 4-tuple match and sends
1 big packet to the driver. This packet is stored on an SGL in which
each SGE is 1 page. The FW also implements a timeout algorithm and it
honors all TCP flag, including the push flag as a trigger to halt
aggregation.
Signed-off-by: Vladislav Zolotarov <vladz@...adcom.com>
Signed-off-by: Eliezer Tamir <eliezert@...adcom.com>
Signed-off-by: Eilong Greenstein <eilong@...adcom.com>
---
drivers/net/bnx2x.h | 275 +++++++++++++++------
drivers/net/bnx2x_main.c | 619 ++++++++++++++++++++++++++++++++++++++++++++--
2 files changed, 795 insertions(+), 99 deletions(-)
diff --git a/drivers/net/bnx2x.h b/drivers/net/bnx2x.h
index 56331be..4e3e18d 100755
--- a/drivers/net/bnx2x.h
+++ b/drivers/net/bnx2x.h
@@ -125,8 +125,8 @@
#define is_multi(bp) (bp->num_queues > 1)
+/* fast path */
-#define bnx2x_sp_check(bp, var) ((bp->slowpath) ? (&bp->slowpath->var) : NULL)
struct sw_rx_bd {
struct sk_buff *skb;
DECLARE_PCI_UNMAP_ADDR(mapping)
@@ -137,6 +137,49 @@ struct sw_tx_bd {
u16 first_bd;
};
+struct sw_rx_page {
+ struct page *page;
+ DECLARE_PCI_UNMAP_ADDR(mapping)
+};
+
+
+/* MC hsi */
+#define BCM_PAGE_BITS 12
+#define BCM_PAGE_SIZE (1 << BCM_PAGE_BITS)
+#define PAGES_PER_SGE_SHIFT 0
+#define PAGES_PER_SGE (1 << PAGES_PER_SGE_SHIFT)
+
+/* SGE ring related macros */
+#define NUM_RX_SGE_PAGES 2
+#define RX_SGE_CNT (BCM_PAGE_SIZE / sizeof(struct eth_rx_sge))
+#define MAX_RX_SGE_CNT (RX_SGE_CNT - 2)
+/* RX_SGE_CNT is promissed to be a power of 2 */
+#define RX_SGE_MASK (RX_SGE_CNT - 1)
+#define NUM_RX_SGE (RX_SGE_CNT * NUM_RX_SGE_PAGES)
+#define MAX_RX_SGE (NUM_RX_SGE - 1)
+#define NEXT_SGE_IDX(x) ((((x) & RX_SGE_MASK) == \
+ (MAX_RX_SGE_CNT - 1)) ? (x) + 3 : (x) + 1)
+#define RX_SGE(x) ((x) & MAX_RX_SGE)
+
+/* SGE producer mask related macros */
+/* Number of bits in one sge_mask array element */
+#define RX_SGE_MASK_ELEM_SZ 64
+#define RX_SGE_MASK_ELEM_SHIFT 6
+#define RX_SGE_MASK_ELEM_MASK ((u64)RX_SGE_MASK_ELEM_SZ - 1)
+
+/* Creates a bitmask of all ones in less significant bits.
+ idx - index of the most significant bit in the created mask */
+#define RX_SGE_ONES_MASK(idx) \
+ (((u64)0x1 << (((idx) & RX_SGE_MASK_ELEM_MASK) + 1)) - 1)
+#define RX_SGE_MASK_ELEM_ONE_MASK ((u64)(~0))
+
+/* Number of u64 elements in SGE mask array */
+#define RX_SGE_MASK_LEN ((NUM_RX_SGE_PAGES * RX_SGE_CNT) / \
+ RX_SGE_MASK_ELEM_SZ)
+#define RX_SGE_MASK_LEN_MASK (RX_SGE_MASK_LEN - 1)
+#define NEXT_SGE_MASK_ELEM(el) (((el) + 1) & RX_SGE_MASK_LEN_MASK)
+
+
struct bnx2x_fastpath {
struct napi_struct napi;
@@ -152,7 +195,8 @@ struct bnx2x_fastpath {
struct eth_tx_bd *tx_desc_ring;
dma_addr_t tx_desc_mapping;
- struct sw_rx_bd *rx_buf_ring;
+ struct sw_rx_bd *rx_buf_ring; /* BDs mappings ring */
+ struct sw_rx_page *rx_page_ring; /* SGE pages mappings ring */
struct eth_rx_bd *rx_desc_ring;
dma_addr_t rx_desc_mapping;
@@ -160,6 +204,12 @@ struct bnx2x_fastpath {
union eth_rx_cqe *rx_comp_ring;
dma_addr_t rx_comp_mapping;
+ /* SGE ring */
+ struct eth_rx_sge *rx_sge_ring;
+ dma_addr_t rx_sge_mapping;
+
+ u64 sge_mask[RX_SGE_MASK_LEN];
+
int state;
#define BNX2X_FP_STATE_CLOSED 0
#define BNX2X_FP_STATE_IRQ 0x80000
@@ -190,27 +240,152 @@ struct bnx2x_fastpath {
u16 rx_bd_cons;
u16 rx_comp_prod;
u16 rx_comp_cons;
+ u16 rx_sge_prod;
+ /* The last maximal completed SGE */
+ u16 last_max_sge;
u16 *rx_cons_sb;
+ u16 *rx_bd_cons_sb;
unsigned long tx_pkt,
rx_pkt,
- rx_calls;
-
- struct bnx2x *bp; /* parent */
+ rx_calls,
+ rx_alloc_failed;
+ /* TPA related */
+ struct sw_rx_bd tpa_pool[ETH_MAX_AGGREGATION_QUEUES_E1H];
+ u8 tpa_state[ETH_MAX_AGGREGATION_QUEUES_E1H];
+#define BNX2X_TPA_START 1
+#define BNX2X_TPA_STOP 2
+ u8 disable_tpa;
+
+ struct bnx2x *bp; /* parent */
+#ifdef BNX2X_STOP_ON_ERROR
+ u64 tpa_queue_used;
+#endif
};
-#define bnx2x_fp(bp, nr, var) (bp->fp[nr].var)
+#define bnx2x_fp(bp, nr, var) (bp->fp[nr].var)
+
+
+/* MC hsi */
+#define MAX_FETCH_BD 13 /* HW max BDs per packet */
+#define RX_COPY_THRESH 92
+
+#define NUM_TX_RINGS 16
+#define TX_DESC_CNT (BCM_PAGE_SIZE / sizeof(struct eth_tx_bd))
+#define MAX_TX_DESC_CNT (TX_DESC_CNT - 1)
+#define NUM_TX_BD (TX_DESC_CNT * NUM_TX_RINGS)
+#define MAX_TX_BD (NUM_TX_BD - 1)
+#define MAX_TX_AVAIL (MAX_TX_DESC_CNT * NUM_TX_RINGS - 2)
+#define NEXT_TX_IDX(x) ((((x) & MAX_TX_DESC_CNT) == \
+ (MAX_TX_DESC_CNT - 1)) ? (x) + 2 : (x) + 1)
+#define TX_BD(x) ((x) & MAX_TX_BD)
+#define TX_BD_POFF(x) ((x) & MAX_TX_DESC_CNT)
+
+/* The RX BD ring is special, each bd is 8 bytes but the last one is 16 */
+#define NUM_RX_RINGS 8
+#define RX_DESC_CNT (BCM_PAGE_SIZE / sizeof(struct eth_rx_bd))
+#define MAX_RX_DESC_CNT (RX_DESC_CNT - 2)
+#define RX_DESC_MASK (RX_DESC_CNT - 1)
+#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 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)
+
+/* As long as CQE is 4 times bigger than BD entry we have to allocate
+ 4 times more pages for CQ ring in order to keep it balanced with
+ BD ring */
+#define NUM_RCQ_RINGS (NUM_RX_RINGS * 4)
+#define RCQ_DESC_CNT (BCM_PAGE_SIZE / sizeof(union eth_rx_cqe))
+#define MAX_RCQ_DESC_CNT (RCQ_DESC_CNT - 1)
+#define NUM_RCQ_BD (RCQ_DESC_CNT * NUM_RCQ_RINGS)
+#define MAX_RCQ_BD (NUM_RCQ_BD - 1)
+#define MAX_RCQ_AVAIL (MAX_RCQ_DESC_CNT * NUM_RCQ_RINGS - 2)
+#define NEXT_RCQ_IDX(x) ((((x) & MAX_RCQ_DESC_CNT) == \
+ (MAX_RCQ_DESC_CNT - 1)) ? (x) + 2 : (x) + 1)
+#define RCQ_BD(x) ((x) & MAX_RCQ_BD)
+
+
/* This is needed for determening of last_max */
#define SUB_S16(a, b) (s16)((s16)(a) - (s16)(b))
+#define __SGE_MASK_SET_BIT(el, bit) \
+ do { \
+ el = ((el) | ((u64)0x1 << (bit))); \
+ } while (0)
+
+#define __SGE_MASK_CLEAR_BIT(el, bit) \
+ do { \
+ el = ((el) & (~((u64)0x1 << (bit)))); \
+ } while (0)
+
+#define SGE_MASK_SET_BIT(fp, idx) \
+ __SGE_MASK_SET_BIT(fp->sge_mask[(idx) >> RX_SGE_MASK_ELEM_SHIFT], \
+ ((idx) & RX_SGE_MASK_ELEM_MASK))
+
+#define SGE_MASK_CLEAR_BIT(fp, idx) \
+ __SGE_MASK_CLEAR_BIT(fp->sge_mask[(idx) >> RX_SGE_MASK_ELEM_SHIFT], \
+ ((idx) & RX_SGE_MASK_ELEM_MASK))
+
+
+/* used on a CID received from the HW */
+#define SW_CID(x) (le32_to_cpu(x) & \
+ (COMMON_RAMROD_ETH_RX_CQE_CID >> 7))
+#define CQE_CMD(x) (le32_to_cpu(x) >> \
+ COMMON_RAMROD_ETH_RX_CQE_CMD_ID_SHIFT)
+
#define BD_UNMAP_ADDR(bd) HILO_U64(le32_to_cpu((bd)->addr_hi), \
le32_to_cpu((bd)->addr_lo))
#define BD_UNMAP_LEN(bd) (le16_to_cpu((bd)->nbytes))
+
+#define DPM_TRIGER_TYPE 0x40
+#define DOORBELL(bp, cid, val) \
+ do { \
+ writel((u32)val, (bp)->doorbells + (BCM_PAGE_SIZE * cid) + \
+ DPM_TRIGER_TYPE); \
+ } while (0)
+
+
+/* TX CSUM helpers */
+#define SKB_CS_OFF(skb) (offsetof(struct tcphdr, check) - \
+ skb->csum_offset)
+#define SKB_CS(skb) (*(u16 *)(skb_transport_header(skb) + \
+ skb->csum_offset))
+
+#define pbd_tcp_flags(skb) (ntohl(tcp_flag_word(tcp_hdr(skb)))>>16 & 0xff)
+
+#define XMIT_PLAIN 0
+#define XMIT_CSUM_V4 0x1
+#define XMIT_CSUM_V6 0x2
+#define XMIT_CSUM_TCP 0x4
+#define XMIT_GSO_V4 0x8
+#define XMIT_GSO_V6 0x10
+
+#define XMIT_CSUM (XMIT_CSUM_V4 | XMIT_CSUM_V6)
+#define XMIT_GSO (XMIT_GSO_V4 | XMIT_GSO_V6)
+
+
/* stuff added to make the code fit 80Col */
#define CQE_TYPE(cqe_fp_flags) ((cqe_fp_flags) & ETH_FAST_PATH_RX_CQE_TYPE)
+#define TPA_TYPE_START ETH_FAST_PATH_RX_CQE_START_FLG
+#define TPA_TYPE_END ETH_FAST_PATH_RX_CQE_END_FLG
+#define TPA_TYPE(cqe_fp_flags) ((cqe_fp_flags) & \
+ (TPA_TYPE_START | TPA_TYPE_END))
+
+#define BNX2X_RX_SUM_OK(cqe) \
+ (!(cqe->fast_path_cqe.status_flags & \
+ (ETH_FAST_PATH_RX_CQE_IP_XSUM_NO_VALIDATION_FLG | \
+ ETH_FAST_PATH_RX_CQE_L4_XSUM_NO_VALIDATION_FLG)))
+
+#define BNX2X_RX_SUM_FIX(cqe) \
+ ((le16_to_cpu(cqe->fast_path_cqe.pars_flags.flags) & \
+ PARSING_FLAGS_OVER_ETHERNET_PROTOCOL) == \
+ (1 << PARSING_FLAGS_OVER_ETHERNET_PROTOCOL_SHIFT))
+
#define ETH_RX_ERROR_FALGS (ETH_FAST_PATH_RX_CQE_PHY_DECODE_ERR_FLG | \
ETH_FAST_PATH_RX_CQE_IP_BAD_XSUM_FLG | \
ETH_FAST_PATH_RX_CQE_L4_BAD_XSUM_FLG)
@@ -240,6 +415,9 @@ struct bnx2x_fastpath {
#define BNX2X_TX_SB_INDEX \
(&fp->status_blk->c_status_block.index_values[C_SB_ETH_TX_CQ_INDEX])
+
+/* end of fast path */
+
/* common */
struct bnx2x_common {
@@ -585,6 +763,7 @@ struct bnx2x {
#define USING_DAC_FLAG 0x10
#define USING_MSIX_FLAG 0x20
#define ASF_ENABLE_FLAG 0x40
+#define TPA_ENABLE_FLAG 0x80
#define NO_MCP_FLAG 0x100
#define BP_NOMCP(bp) (bp->flags & NO_MCP_FLAG)
@@ -706,74 +885,6 @@ void bnx2x_write_dmae(struct bnx2x *bp, dma_addr_t dma_addr, u32 dst_addr,
u32 len32);
int bnx2x_set_gpio(struct bnx2x *bp, int gpio_num, u32 mode);
-
-/* MC hsi */
-#define RX_COPY_THRESH 92
-#define BCM_PAGE_BITS 12
-#define BCM_PAGE_SIZE (1 << BCM_PAGE_BITS)
-
-#define NUM_TX_RINGS 16
-#define TX_DESC_CNT (BCM_PAGE_SIZE / sizeof(struct eth_tx_bd))
-#define MAX_TX_DESC_CNT (TX_DESC_CNT - 1)
-#define NUM_TX_BD (TX_DESC_CNT * NUM_TX_RINGS)
-#define MAX_TX_BD (NUM_TX_BD - 1)
-#define MAX_TX_AVAIL (MAX_TX_DESC_CNT * NUM_TX_RINGS - 2)
-#define NEXT_TX_IDX(x) ((((x) & MAX_TX_DESC_CNT) == \
- (MAX_TX_DESC_CNT - 1)) ? (x) + 2 : (x) + 1)
-#define TX_BD(x) ((x) & MAX_TX_BD)
-#define TX_BD_POFF(x) ((x) & MAX_TX_DESC_CNT)
-
-/* The RX BD ring is special, each bd is 8 bytes but the last one is 16 */
-#define NUM_RX_RINGS 8
-#define RX_DESC_CNT (BCM_PAGE_SIZE / sizeof(struct eth_rx_bd))
-#define MAX_RX_DESC_CNT (RX_DESC_CNT - 2)
-#define RX_DESC_MASK (RX_DESC_CNT - 1)
-#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 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)
-
-#define NUM_RCQ_RINGS (NUM_RX_RINGS * 2)
-#define RCQ_DESC_CNT (BCM_PAGE_SIZE / sizeof(union eth_rx_cqe))
-#define MAX_RCQ_DESC_CNT (RCQ_DESC_CNT - 1)
-#define NUM_RCQ_BD (RCQ_DESC_CNT * NUM_RCQ_RINGS)
-#define MAX_RCQ_BD (NUM_RCQ_BD - 1)
-#define MAX_RCQ_AVAIL (MAX_RCQ_DESC_CNT * NUM_RCQ_RINGS - 2)
-#define NEXT_RCQ_IDX(x) ((((x) & MAX_RCQ_DESC_CNT) == \
- (MAX_RCQ_DESC_CNT - 1)) ? (x) + 2 : (x) + 1)
-#define RCQ_BD(x) ((x) & MAX_RCQ_BD)
-
-
-/* used on a CID received from the HW */
-#define SW_CID(x) (le32_to_cpu(x) & \
- (COMMON_RAMROD_ETH_RX_CQE_CID >> 1))
-#define CQE_CMD(x) (le32_to_cpu(x) >> \
- COMMON_RAMROD_ETH_RX_CQE_CMD_ID_SHIFT)
-
-#define STROM_ASSERT_ARRAY_SIZE 50
-
-
-
-/* must be used on a CID before placing it on a HW ring */
-#define HW_CID(bp, x) ((BP_PORT(bp) << 23) | (BP_E1HVN(bp) << 17) | x)
-
-#define SP_DESC_CNT (BCM_PAGE_SIZE / sizeof(struct eth_spe))
-#define MAX_SP_DESC_CNT (SP_DESC_CNT - 1)
-
-
-#define BNX2X_BTR 3
-#define MAX_SPQ_PENDING 8
-
-
-#define DPM_TRIGER_TYPE 0x40
-#define DOORBELL(bp, cid, val) \
- do { \
- writel((u32)val, (bp)->doorbells + (BCM_PAGE_SIZE * cid) + \
- DPM_TRIGER_TYPE); \
- } while (0)
-
static inline u32 reg_poll(struct bnx2x *bp, u32 reg, u32 expected, int ms,
int wait)
{
@@ -853,14 +964,20 @@ static inline u32 reg_poll(struct bnx2x *bp, u32 reg, u32 expected, int ms,
#define BNX2X_LOOPBACK_FAILED (BNX2X_MAC_LOOPBACK_FAILED | \
BNX2X_PHY_LOOPBACK_FAILED)
-#define pbd_tcp_flags(skb) (ntohl(tcp_flag_word(tcp_hdr(skb)))>>16 & 0xff)
+
+#define STROM_ASSERT_ARRAY_SIZE 50
+
/* must be used on a CID before placing it on a HW ring */
+#define HW_CID(bp, x) ((BP_PORT(bp) << 23) | (BP_E1HVN(bp) << 17) | x)
+
+#define SP_DESC_CNT (BCM_PAGE_SIZE / sizeof(struct eth_spe))
+#define MAX_SP_DESC_CNT (SP_DESC_CNT - 1)
+
+
+#define BNX2X_BTR 3
+#define MAX_SPQ_PENDING 8
-#define BNX2X_RX_SUM_OK(cqe) \
- (!(cqe->fast_path_cqe.status_flags & \
- (ETH_FAST_PATH_RX_CQE_IP_XSUM_NO_VALIDATION_FLG | \
- ETH_FAST_PATH_RX_CQE_L4_XSUM_NO_VALIDATION_FLG)))
/* CMNG constants
derived from lab experiments, and not from system spec calculations !!! */
diff --git a/drivers/net/bnx2x_main.c b/drivers/net/bnx2x_main.c
index 20ecfcb..366764e 100644
--- a/drivers/net/bnx2x_main.c
+++ b/drivers/net/bnx2x_main.c
@@ -84,6 +84,7 @@ MODULE_VERSION(DRV_MODULE_VERSION);
static int use_inta;
static int poll;
static int debug;
+static int disable_tpa;
static int nomcp;
static int load_count[3]; /* 0 common, 1 port0, 2 port1 */
static int use_multi;
@@ -91,6 +92,7 @@ static int use_multi;
module_param(use_inta, int, 0);
module_param(poll, int, 0);
module_param(debug, int, 0);
+module_param(disable_tpa, int, 0);
module_param(nomcp, int, 0);
MODULE_PARM_DESC(use_inta, "use INT#A instead of MSI-X");
MODULE_PARM_DESC(poll, "use polling (for debug)");
@@ -440,12 +442,12 @@ static void bnx2x_panic_dump(struct bnx2x *bp)
" tx_bd_prod(%x) tx_bd_cons(%x) *tx_cons_sb(%x)"
" *rx_cons_sb(%x) rx_comp_prod(%x)"
" rx_comp_cons(%x) fp_c_idx(%x) fp_u_idx(%x)"
- " bd data(%x,%x)\n",
+ " bd data(%x,%x) rx_alloc_failed(%lx)\n",
i, fp->tx_pkt_prod, fp->tx_pkt_cons, fp->tx_bd_prod,
fp->tx_bd_cons, *fp->tx_cons_sb, *fp->rx_cons_sb,
fp->rx_comp_prod, fp->rx_comp_cons, fp->fp_c_idx,
fp->fp_u_idx, hw_prods->packets_prod,
- hw_prods->bds_prod);
+ hw_prods->bds_prod, fp->rx_alloc_failed);
start = TX_BD(le16_to_cpu(*fp->tx_cons_sb) - 10);
end = TX_BD(le16_to_cpu(*fp->tx_cons_sb) + 245);
@@ -888,6 +890,62 @@ static void bnx2x_sp_event(struct bnx2x_fastpath *fp,
mb(); /* force bnx2x_wait_ramrod() to see the change */
}
+static inline void bnx2x_free_rx_sge(struct bnx2x *bp,
+ struct bnx2x_fastpath *fp, u16 index)
+{
+ struct sw_rx_page *sw_buf = &fp->rx_page_ring[index];
+ struct page *page = sw_buf->page;
+ struct eth_rx_sge *sge = &fp->rx_sge_ring[index];
+
+ /* Skip "next page" elements */
+ if (!page)
+ return;
+
+ pci_unmap_page(bp->pdev, pci_unmap_addr(sw_buf, mapping),
+ PAGE_SIZE*PAGES_PER_SGE, PCI_DMA_FROMDEVICE);
+ __free_pages(page, PAGES_PER_SGE_SHIFT);
+
+ sw_buf->page = NULL;
+ sge->addr_hi = 0;
+ sge->addr_lo = 0;
+}
+
+static inline void bnx2x_free_rx_sge_range(struct bnx2x *bp,
+ struct bnx2x_fastpath *fp, int last)
+{
+ int i;
+
+ for (i = 0; i < last; i++)
+ bnx2x_free_rx_sge(bp, fp, i);
+}
+
+static inline int bnx2x_alloc_rx_sge(struct bnx2x *bp,
+ struct bnx2x_fastpath *fp, u16 index)
+{
+ struct page *page = alloc_pages(GFP_ATOMIC, PAGES_PER_SGE_SHIFT);
+ struct sw_rx_page *sw_buf = &fp->rx_page_ring[index];
+ struct eth_rx_sge *sge = &fp->rx_sge_ring[index];
+ dma_addr_t mapping;
+
+ if (unlikely(page == NULL))
+ return -ENOMEM;
+
+ mapping = pci_map_page(bp->pdev, page, 0, PAGES_PER_SGE*PAGE_SIZE,
+ PCI_DMA_FROMDEVICE);
+ if (unlikely(dma_mapping_error(mapping))) {
+ __free_pages(page, PAGES_PER_SGE_SHIFT);
+ return -ENOMEM;
+ }
+
+ sw_buf->page = page;
+ pci_unmap_addr_set(sw_buf, mapping, mapping);
+
+ sge->addr_hi = cpu_to_le32(U64_HI(mapping));
+ sge->addr_lo = cpu_to_le32(U64_LO(mapping));
+
+ return 0;
+}
+
static inline int bnx2x_alloc_rx_skb(struct bnx2x *bp,
struct bnx2x_fastpath *fp, u16 index)
{
@@ -941,12 +999,301 @@ static void bnx2x_reuse_rx_skb(struct bnx2x_fastpath *fp,
*prod_bd = *cons_bd;
}
+static inline void bnx2x_update_last_max_sge(struct bnx2x_fastpath *fp,
+ u16 idx)
+{
+ u16 last_max = fp->last_max_sge;
+
+ if (SUB_S16(idx, last_max) > 0)
+ fp->last_max_sge = idx;
+}
+
+static void bnx2x_clear_sge_mask_next_elems(struct bnx2x_fastpath *fp)
+{
+ int i, j;
+
+ for (i = 1; i <= NUM_RX_SGE_PAGES; i++) {
+ int idx = RX_SGE_CNT * i - 1;
+
+ for (j = 0; j < 2; j++) {
+ SGE_MASK_CLEAR_BIT(fp, idx);
+ idx--;
+ }
+ }
+}
+
+static void bnx2x_update_sge_prod(struct bnx2x_fastpath *fp,
+ struct eth_fast_path_rx_cqe *fp_cqe)
+{
+ struct bnx2x *bp = fp->bp;
+ u16 sge_len = PAGE_ALIGN(le16_to_cpu(fp_cqe->pkt_len) -
+ le16_to_cpu(fp_cqe->len_on_bd)) >> PAGE_SHIFT;
+ u16 last_max, last_elem, first_elem;
+ u16 delta = 0;
+ u16 i;
+
+ if (!sge_len)
+ return;
+
+ /* First mark all used pages*/
+ for (i = 0; i < sge_len; i++)
+ SGE_MASK_CLEAR_BIT(fp, RX_SGE(le16_to_cpu(fp_cqe->sgl[i])));
+
+ DP(BNX2X_MSG_FP, "fp_cqe->sgl[%d] = %d\n",
+ sge_len - 1, le16_to_cpu(fp_cqe->sgl[sge_len - 1]));
+
+ /* Here we assume that the last SGE index is the biggest */
+ prefetch((void *)(fp->sge_mask));
+ bnx2x_update_last_max_sge(fp, le16_to_cpu(fp_cqe->sgl[sge_len - 1]));
+
+ last_max = RX_SGE(fp->last_max_sge);
+ last_elem = last_max >> RX_SGE_MASK_ELEM_SHIFT;
+ first_elem = RX_SGE(fp->rx_sge_prod) >> RX_SGE_MASK_ELEM_SHIFT;
+
+ /* If ring is not full */
+ if (last_elem + 1 != first_elem)
+ last_elem++;
+
+ /* Now update the prod */
+ for (i = first_elem; i != last_elem; i = NEXT_SGE_MASK_ELEM(i)) {
+ if (likely(fp->sge_mask[i]))
+ break;
+
+ fp->sge_mask[i] = RX_SGE_MASK_ELEM_ONE_MASK;
+ delta += RX_SGE_MASK_ELEM_SZ;
+ }
+
+ if (delta > 0) {
+ fp->rx_sge_prod += delta;
+ /* clear page-end entries */
+ bnx2x_clear_sge_mask_next_elems(fp);
+ }
+
+ DP(NETIF_MSG_RX_STATUS,
+ "fp->last_max_sge = %d fp->rx_sge_prod = %d\n",
+ fp->last_max_sge, fp->rx_sge_prod);
+}
+
+static inline void bnx2x_init_sge_ring_bit_mask(struct bnx2x_fastpath *fp)
+{
+ /* Set the mask to all 1-s: it's faster to compare to 0 than to 0xf-s */
+ memset(fp->sge_mask, 0xff,
+ (NUM_RX_SGE >> RX_SGE_MASK_ELEM_SHIFT)*sizeof(u64));
+
+ /* Clear the two last indeces in the page to 1:
+ these are the indeces that correspond to the "next" element,
+ hence will never be indicated and should be removed from
+ the calculations. */
+ bnx2x_clear_sge_mask_next_elems(fp);
+}
+
+static void bnx2x_tpa_start(struct bnx2x_fastpath *fp, u16 queue,
+ struct sk_buff *skb, u16 cons, u16 prod)
+{
+ struct bnx2x *bp = fp->bp;
+ struct sw_rx_bd *cons_rx_buf = &fp->rx_buf_ring[cons];
+ struct sw_rx_bd *prod_rx_buf = &fp->rx_buf_ring[prod];
+ struct eth_rx_bd *prod_bd = &fp->rx_desc_ring[prod];
+ dma_addr_t mapping;
+
+ /* move empty skb from pool to prod and map it */
+ prod_rx_buf->skb = fp->tpa_pool[queue].skb;
+ mapping = pci_map_single(bp->pdev, fp->tpa_pool[queue].skb->data,
+ bp->rx_buf_use_size, PCI_DMA_FROMDEVICE);
+ pci_unmap_addr_set(prod_rx_buf, mapping, mapping);
+
+ /* move partial skb from cons to pool (don't unmap yet) */
+ fp->tpa_pool[queue] = *cons_rx_buf;
+
+ /* mark bin state as start - print error if current state != stop */
+ if (fp->tpa_state[queue] != BNX2X_TPA_STOP)
+ BNX2X_ERR("start of bin not in stop [%d]\n", queue);
+
+ fp->tpa_state[queue] = BNX2X_TPA_START;
+
+ /* point prod_bd to new skb */
+ prod_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
+ prod_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
+
+#ifdef BNX2X_STOP_ON_ERROR
+ fp->tpa_queue_used |= 1<<queue;
+ DP(NETIF_MSG_RX_STATUS, "fp->tpa_queue_used = 0x%llx\n",
+ fp->tpa_queue_used);
+#endif
+}
+
+static int bnx2x_fill_frag_skb(struct bnx2x *bp, struct bnx2x_fastpath *fp,
+ struct sk_buff *skb,
+ struct eth_fast_path_rx_cqe *fp_cqe,
+ u16 cqe_idx)
+{
+ u32 i, frag_len, frag_size, pages;
+ struct sw_rx_page *rx_pg, old_rx_pg;
+ struct page *sge;
+ int err;
+ int j;
+
+ frag_size = le16_to_cpu(fp_cqe->pkt_len) -
+ le16_to_cpu(fp_cqe->len_on_bd);
+ pages = PAGE_ALIGN(frag_size) >> PAGE_SHIFT;
+
+#ifdef BNX2X_STOP_ON_ERROR
+ if (pages > 8*PAGES_PER_SGE) {
+ BNX2X_ERR("SGL length is too long: %d. CQE index is %d\n",
+ pages, cqe_idx);
+ BNX2X_ERR("fp_cqe->pkt_len = %d fp_cqe->len_on_bd = %d\n",
+ fp_cqe->pkt_len, fp_cqe->len_on_bd);
+ bnx2x_panic();
+ return -EINVAL;
+ }
+#endif
+
+ /* Run through the SGL and compose the fragmented skb */
+ for (i = 0, j = 0; i < pages; i += PAGES_PER_SGE, j++) {
+ u16 sge_idx = RX_SGE(le16_to_cpu(fp_cqe->sgl[j]));
+
+ /* FW gives the indices of the SGE as if the ring is an array
+ (meaning that "next" element will consume 2 indices) */
+ frag_len = min(frag_size,
+ (unsigned int)PAGE_SIZE*PAGES_PER_SGE);
+ rx_pg = &fp->rx_page_ring[sge_idx];
+ sge = rx_pg->page;
+ old_rx_pg = *rx_pg;
+
+ /* If we fail to allocate a substitute page, we simply stop
+ where we are and drop the whole packet */
+ err = bnx2x_alloc_rx_sge(bp, fp, sge_idx);
+ if (unlikely(err)) {
+ fp->rx_alloc_failed++;
+ return err;
+ }
+
+ /* Unmap the page as we r going to pass it to the stack */
+ pci_unmap_page(bp->pdev, pci_unmap_addr(&old_rx_pg, mapping),
+ PAGE_SIZE*PAGES_PER_SGE, PCI_DMA_FROMDEVICE);
+
+ /* Add one frag and update the appropriate fields in the skb */
+ skb_fill_page_desc(skb, j, old_rx_pg.page, 0, frag_len);
+
+ skb->data_len += frag_len;
+ skb->truesize += frag_len;
+ skb->len += frag_len;
+
+ frag_size -= frag_len;
+ }
+
+ return 0;
+}
+
+static void bnx2x_tpa_stop(struct bnx2x *bp, struct bnx2x_fastpath *fp,
+ u16 queue, int pad, int len, union eth_rx_cqe *cqe,
+ u16 cqe_idx)
+{
+ struct sw_rx_bd *rx_buf = &fp->tpa_pool[queue];
+ struct sk_buff *skb = rx_buf->skb;
+ /* alloc new skb */
+ struct sk_buff *new_skb = netdev_alloc_skb(bp->dev, bp->rx_buf_size);
+
+ /* Unmap skb in the pool anyway, as we are going to change
+ pool entry status to BNX2X_TPA_STOP even if new skb allocation
+ fails. */
+ pci_unmap_single(bp->pdev, pci_unmap_addr(rx_buf, mapping),
+ bp->rx_buf_use_size, PCI_DMA_FROMDEVICE);
+
+ /* if alloc failed drop the packet and keep the buffer in the bin */
+ if (likely(new_skb)) {
+
+ prefetch(skb);
+ prefetch(((char *)(skb)) + 128);
+
+ /* else fix ip xsum and give it to the stack */
+ /* (no need to map the new skb) */
+#ifdef BNX2X_STOP_ON_ERROR
+ if (pad + len > bp->rx_buf_size) {
+ BNX2X_ERR("skb_put is about to fail... "
+ "pad %d len %d rx_buf_size %d\n",
+ pad, len, bp->rx_buf_size);
+ bnx2x_panic();
+ return;
+ }
+#endif
+
+ skb_reserve(skb, pad);
+ skb_put(skb, len);
+
+ skb->protocol = eth_type_trans(skb, bp->dev);
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+
+ {
+ struct iphdr *iph;
+
+ iph = (struct iphdr *)skb->data;
+ iph->check = 0;
+ iph->check = ip_fast_csum((u8 *)iph, iph->ihl);
+ }
+
+ if (!bnx2x_fill_frag_skb(bp, fp, skb,
+ &cqe->fast_path_cqe, cqe_idx)) {
+#ifdef BCM_VLAN
+ if ((bp->vlgrp != NULL) &&
+ (le16_to_cpu(cqe->fast_path_cqe.pars_flags.flags) &
+ PARSING_FLAGS_VLAN))
+ vlan_hwaccel_receive_skb(skb, bp->vlgrp,
+ le16_to_cpu(cqe->fast_path_cqe.
+ vlan_tag));
+ else
+#endif
+ netif_receive_skb(skb);
+ } else {
+ DP(NETIF_MSG_RX_STATUS, "Failed to allocate new pages"
+ " - dropping packet!\n");
+ dev_kfree_skb(skb);
+ }
+
+ bp->dev->last_rx = jiffies;
+
+ /* put new skb in bin */
+ fp->tpa_pool[queue].skb = new_skb;
+
+ } else {
+ DP(NETIF_MSG_RX_STATUS,
+ "Failed to allocate new skb - dropping packet!\n");
+ fp->rx_alloc_failed++;
+ }
+
+ fp->tpa_state[queue] = BNX2X_TPA_STOP;
+}
+
+static inline void bnx2x_update_rx_prod(struct bnx2x *bp,
+ struct bnx2x_fastpath *fp,
+ u16 bd_prod, u16 rx_comp_prod,
+ u16 rx_sge_prod)
+{
+ struct tstorm_eth_rx_producers rx_prods = {0};
+ int i;
+
+ /* Update producers */
+ rx_prods.bd_prod = bd_prod;
+ rx_prods.cqe_prod = rx_comp_prod;
+ rx_prods.sge_prod = rx_sge_prod;
+
+ for (i = 0; i < sizeof(struct tstorm_eth_rx_producers)/4; i++)
+ REG_WR(bp, BAR_TSTRORM_INTMEM +
+ TSTORM_RX_PRODS_OFFSET(BP_PORT(bp), FP_CL_ID(fp)) + i*4,
+ ((u32 *)&rx_prods)[i]);
+
+ DP(NETIF_MSG_RX_STATUS,
+ "Wrote: bd_prod %u cqe_prod %u sge_prod %u\n",
+ bd_prod, rx_comp_prod, rx_sge_prod);
+}
+
static int bnx2x_rx_int(struct bnx2x_fastpath *fp, int budget)
{
struct bnx2x *bp = fp->bp;
u16 bd_cons, bd_prod, bd_prod_fw, comp_ring_cons;
u16 hw_comp_cons, sw_comp_cons, sw_comp_prod;
int rx_pkt = 0;
+ u16 queue;
#ifdef BNX2X_STOP_ON_ERROR
if (unlikely(bp->panic))
@@ -1006,6 +1353,49 @@ static int bnx2x_rx_int(struct bnx2x_fastpath *fp, int budget)
len = le16_to_cpu(cqe->fast_path_cqe.pkt_len);
pad = cqe->fast_path_cqe.placement_offset;
+ /* If CQE is marked both TPA_START and TPA_END
+ it is a non-TPA CQE */
+ if ((!fp->disable_tpa) &&
+ (TPA_TYPE(cqe_fp_flags) !=
+ (TPA_TYPE_START | TPA_TYPE_END))) {
+ queue = cqe->fast_path_cqe.queue_index;
+
+ if (TPA_TYPE(cqe_fp_flags) == TPA_TYPE_START) {
+ DP(NETIF_MSG_RX_STATUS,
+ "calling tpa_start on queue %d\n",
+ queue);
+
+ bnx2x_tpa_start(fp, queue, skb,
+ bd_cons, bd_prod);
+ goto next_rx;
+ }
+
+ if (TPA_TYPE(cqe_fp_flags) == TPA_TYPE_END) {
+ DP(NETIF_MSG_RX_STATUS,
+ "calling tpa_stop on queue %d\n",
+ queue);
+
+ if (!BNX2X_RX_SUM_FIX(cqe))
+ BNX2X_ERR("STOP on none TCP "
+ "data\n");
+
+ /* This is a size of the linear data
+ on this skb */
+ len = le16_to_cpu(cqe->fast_path_cqe.
+ len_on_bd);
+ bnx2x_tpa_stop(bp, fp, queue, pad,
+ len, cqe, comp_ring_cons);
+ #ifdef BNX2X_STOP_ON_ERROR
+ if (bp->panic)
+ return -EINVAL;
+ #endif
+
+ bnx2x_update_sge_prod(fp,
+ &cqe->fast_path_cqe);
+ goto next_cqe;
+ }
+ }
+
pci_dma_sync_single_for_device(bp->pdev,
pci_unmap_addr(rx_buf, mapping),
pad + RX_COPY_THRESH,
@@ -1036,7 +1426,7 @@ static int bnx2x_rx_int(struct bnx2x_fastpath *fp, int budget)
DP(NETIF_MSG_RX_ERR,
"ERROR packet dropped "
"because of alloc failure\n");
- /* TBD count this as a drop? */
+ fp->rx_alloc_failed++;
goto reuse_rx;
}
@@ -1062,6 +1452,7 @@ static int bnx2x_rx_int(struct bnx2x_fastpath *fp, int budget)
DP(NETIF_MSG_RX_ERR,
"ERROR packet dropped because "
"of alloc failure\n");
+ fp->rx_alloc_failed++;
reuse_rx:
bnx2x_reuse_rx_skb(fp, skb, bd_cons, bd_prod);
goto next_rx;
@@ -1108,11 +1499,9 @@ next_cqe:
fp->rx_comp_cons = sw_comp_cons;
fp->rx_comp_prod = sw_comp_prod;
- REG_WR(bp, BAR_TSTRORM_INTMEM +
- TSTORM_RX_PRODS_OFFSET(BP_PORT(bp), FP_CL_ID(fp)),
- sw_comp_prod);
-
-
+ /* Update producers */
+ bnx2x_update_rx_prod(bp, fp, bd_prod_fw, sw_comp_prod,
+ fp->rx_sge_prod);
mmiowb(); /* keep prod updates ordered */
fp->rx_pkt += rx_pkt;
@@ -3516,6 +3905,8 @@ static void bnx2x_init_sb(struct bnx2x *bp, int sb_id,
REG_WR(bp, BAR_CSTRORM_INTMEM +
((CSTORM_SB_HOST_SB_ADDR_OFFSET(port, sb_id)) + 4),
U64_HI(section));
+ REG_WR8(bp, BAR_CSTRORM_INTMEM + FP_CSB_FUNC_OFF +
+ CSTORM_SB_HOST_STATUS_BLOCK_OFFSET(port, sb_id), func);
for (index = 0; index < HC_CSTORM_SB_NUM_INDICES; index++)
REG_WR16(bp, BAR_CSTRORM_INTMEM +
@@ -3707,9 +4098,35 @@ static void bnx2x_update_coalesce(struct bnx2x *bp)
}
}
+static inline void bnx2x_free_tpa_pool(struct bnx2x *bp,
+ struct bnx2x_fastpath *fp, int last)
+{
+ int i;
+
+ for (i = 0; i < last; i++) {
+ struct sw_rx_bd *rx_buf = &(fp->tpa_pool[i]);
+ struct sk_buff *skb = rx_buf->skb;
+
+ if (skb == NULL) {
+ DP(NETIF_MSG_IFDOWN, "tpa bin %d empty on free\n", i);
+ continue;
+ }
+
+ if (fp->tpa_state[i] == BNX2X_TPA_START)
+ pci_unmap_single(bp->pdev,
+ pci_unmap_addr(rx_buf, mapping),
+ bp->rx_buf_use_size,
+ PCI_DMA_FROMDEVICE);
+
+ dev_kfree_skb(skb);
+ rx_buf->skb = NULL;
+ }
+}
+
static void bnx2x_init_rx_rings(struct bnx2x *bp)
{
- u16 ring_prod;
+ int func = BP_FUNC(bp);
+ u16 ring_prod, cqe_ring_prod = 0;
int i, j;
bp->rx_buf_use_size = bp->dev->mtu;
@@ -3717,12 +4134,59 @@ static void bnx2x_init_rx_rings(struct bnx2x *bp)
bp->rx_buf_use_size += bp->rx_offset + ETH_OVREHEAD;
bp->rx_buf_size = bp->rx_buf_use_size + 64;
+ if (bp->flags & TPA_ENABLE_FLAG) {
+ DP(NETIF_MSG_IFUP,
+ "rx_buf_use_size %d rx_buf_size %d effective_mtu %d\n",
+ bp->rx_buf_use_size, bp->rx_buf_size,
+ bp->dev->mtu + ETH_OVREHEAD);
+
+ for_each_queue(bp, j) {
+ for (i = 0; i < ETH_MAX_AGGREGATION_QUEUES_E1H; i++) {
+ struct bnx2x_fastpath *fp = &bp->fp[j];
+
+ fp->tpa_pool[i].skb =
+ netdev_alloc_skb(bp->dev, bp->rx_buf_size);
+ if (!fp->tpa_pool[i].skb) {
+ BNX2X_ERR("Failed to allocate TPA "
+ "skb pool for queue[%d] - "
+ "disabling TPA on this "
+ "queue!\n", j);
+ bnx2x_free_tpa_pool(bp, fp, i);
+ fp->disable_tpa = 1;
+ break;
+ }
+ pci_unmap_addr_set((struct sw_rx_bd *)
+ &bp->fp->tpa_pool[i],
+ mapping, 0);
+ fp->tpa_state[i] = BNX2X_TPA_STOP;
+ }
+ }
+ }
+
for_each_queue(bp, j) {
struct bnx2x_fastpath *fp = &bp->fp[j];
fp->rx_bd_cons = 0;
fp->rx_cons_sb = BNX2X_RX_SB_INDEX;
+ fp->rx_bd_cons_sb = BNX2X_RX_SB_BD_INDEX;
+
+ /* "next page" elements initialization */
+ /* SGE ring */
+ for (i = 1; i <= NUM_RX_SGE_PAGES; i++) {
+ struct eth_rx_sge *sge;
+
+ sge = &fp->rx_sge_ring[RX_SGE_CNT * i - 2];
+ sge->addr_hi =
+ cpu_to_le32(U64_HI(fp->rx_sge_mapping +
+ BCM_PAGE_SIZE*(i % NUM_RX_SGE_PAGES)));
+ sge->addr_lo =
+ cpu_to_le32(U64_LO(fp->rx_sge_mapping +
+ BCM_PAGE_SIZE*(i % NUM_RX_SGE_PAGES)));
+ }
+
+ bnx2x_init_sge_ring_bit_mask(fp);
+ /* RX BD ring */
for (i = 1; i <= NUM_RX_RINGS; i++) {
struct eth_rx_bd *rx_bd;
@@ -3749,35 +4213,61 @@ static void bnx2x_init_rx_rings(struct bnx2x *bp)
BCM_PAGE_SIZE*(i % NUM_RCQ_RINGS)));
}
- /* rx completion queue */
- fp->rx_comp_cons = ring_prod = 0;
+ /* Allocate SGEs and initialize the ring elements */
+ for (i = 0, ring_prod = 0;
+ i < MAX_RX_SGE_CNT*NUM_RX_SGE_PAGES; i++) {
+ if (bnx2x_alloc_rx_sge(bp, fp, ring_prod) < 0) {
+ BNX2X_ERR("was only able to allocate "
+ "%d rx sges\n", i);
+ BNX2X_ERR("disabling TPA for queue[%d]\n", j);
+ /* Cleanup already allocated elements */
+ bnx2x_free_rx_sge_range(bp, fp, ring_prod);
+ bnx2x_free_tpa_pool(bp, fp,
+ ETH_MAX_AGGREGATION_QUEUES_E1H);
+ fp->disable_tpa = 1;
+ ring_prod = 0;
+ break;
+ }
+ ring_prod = NEXT_SGE_IDX(ring_prod);
+ }
+ fp->rx_sge_prod = ring_prod;
+
+ /* Allocate BDs and initialize BD ring */
+ fp->rx_comp_cons = fp->rx_alloc_failed = 0;
+ cqe_ring_prod = ring_prod = 0;
for (i = 0; i < bp->rx_ring_size; i++) {
if (bnx2x_alloc_rx_skb(bp, fp, ring_prod) < 0) {
BNX2X_ERR("was only able to allocate "
"%d rx skbs\n", i);
+ fp->rx_alloc_failed++;
break;
}
ring_prod = NEXT_RX_IDX(ring_prod);
+ cqe_ring_prod = NEXT_RCQ_IDX(cqe_ring_prod);
BUG_TRAP(ring_prod > i);
}
- fp->rx_bd_prod = fp->rx_comp_prod = ring_prod;
+ fp->rx_bd_prod = ring_prod;
+ /* must not have more available CQEs than BDs */
+ fp->rx_comp_prod = min((u16)(NUM_RCQ_RINGS*RCQ_DESC_CNT),
+ cqe_ring_prod);
fp->rx_pkt = fp->rx_calls = 0;
- /* Warning! this will generate an interrupt (to the TSTORM) */
- /* must only be done when chip is initialized */
- REG_WR(bp, BAR_TSTRORM_INTMEM +
- TSTORM_RX_PRODS_OFFSET(BP_PORT(bp), FP_CL_ID(fp)),
- ring_prod);
+ /* Warning!
+ * this will generate an interrupt (to the TSTORM)
+ * must only be done after chip is initialized
+ */
+ bnx2x_update_rx_prod(bp, fp, ring_prod, fp->rx_comp_prod,
+ fp->rx_sge_prod);
if (j != 0)
continue;
REG_WR(bp, BAR_USTRORM_INTMEM +
- USTORM_MEM_WORKAROUND_ADDRESS_OFFSET(BP_PORT(bp)),
+ USTORM_MEM_WORKAROUND_ADDRESS_OFFSET(func),
U64_LO(fp->rx_comp_mapping));
REG_WR(bp, BAR_USTRORM_INTMEM +
- USTORM_MEM_WORKAROUND_ADDRESS_OFFSET(BP_PORT(bp)) + 4,
+ USTORM_MEM_WORKAROUND_ADDRESS_OFFSET(func) + 4,
U64_HI(fp->rx_comp_mapping));
}
}
@@ -3865,6 +4355,18 @@ static void bnx2x_init_context(struct bnx2x *bp)
U64_HI(fp->rx_desc_mapping);
context->ustorm_st_context.common.bd_page_base_lo =
U64_LO(fp->rx_desc_mapping);
+ if (!fp->disable_tpa) {
+ context->ustorm_st_context.common.flags |=
+ (USTORM_ETH_ST_CONTEXT_CONFIG_ENABLE_TPA |
+ USTORM_ETH_ST_CONTEXT_CONFIG_ENABLE_SGE_RING);
+ context->ustorm_st_context.common.sge_buff_size =
+ (u16)(PAGES_PER_SGE*PAGE_SIZE);
+ context->ustorm_st_context.common.sge_page_base_hi =
+ U64_HI(fp->rx_sge_mapping);
+ context->ustorm_st_context.common.sge_page_base_lo =
+ U64_LO(fp->rx_sge_mapping);
+ }
+
context->cstorm_st_context.sb_index_number =
HC_INDEX_C_ETH_TX_CQ_CONS;
context->cstorm_st_context.status_block_id = sb_id;
@@ -3915,6 +4417,18 @@ static void bnx2x_set_client_config(struct bnx2x *bp)
}
#endif
+ if (bp->flags & TPA_ENABLE_FLAG) {
+ tstorm_client.max_sges_for_packet =
+ PAGE_ALIGN(tstorm_client.mtu) >> PAGE_SHIFT;
+ tstorm_client.max_sges_for_packet =
+ ((tstorm_client.max_sges_for_packet +
+ PAGES_PER_SGE - 1) & (~(PAGES_PER_SGE - 1)))
+ >> PAGES_PER_SGE_SHIFT;
+
+ tstorm_client.config_flags |=
+ TSTORM_ETH_CLIENT_CONFIG_ENABLE_SGE_RING;
+ }
+
for_each_queue(bp, i) {
REG_WR(bp, BAR_TSTRORM_INTMEM +
TSTORM_CLIENT_CONFIG_OFFSET(port, bp->fp[i].cl_id),
@@ -4038,6 +4552,23 @@ static void bnx2x_init_internal(struct bnx2x *bp)
for (i = 0; i < USTORM_AGG_DATA_SIZE >> 2; i++)
REG_WR(bp, BAR_USTRORM_INTMEM +
USTORM_AGG_DATA_OFFSET + 4*i, 0);
+
+ for_each_queue(bp, i) {
+ struct bnx2x_fastpath *fp = &bp->fp[i];
+
+ REG_WR(bp, BAR_USTRORM_INTMEM +
+ USTORM_CQE_PAGE_BASE_OFFSET(port, FP_CL_ID(fp)),
+ U64_LO(fp->rx_comp_mapping));
+ REG_WR(bp, BAR_USTRORM_INTMEM +
+ USTORM_CQE_PAGE_BASE_OFFSET(port, FP_CL_ID(fp)) + 4,
+ U64_HI(fp->rx_comp_mapping));
+
+ REG_WR16(bp, BAR_USTRORM_INTMEM +
+ USTORM_MAX_AGG_SIZE_OFFSET(port, FP_CL_ID(fp)),
+ min((u32)(bp->rx_buf_use_size +
+ 8*PAGES_PER_SGE*PAGE_SIZE),
+ (u32)0xffff));
+ }
}
static void bnx2x_nic_init(struct bnx2x *bp)
@@ -4696,6 +5227,17 @@ static int bnx2x_init_common(struct bnx2x *bp)
enable_blocks_parity(bp);
#endif
+ if (bp->flags & TPA_ENABLE_FLAG) {
+ struct tstorm_eth_tpa_exist tmp = {0};
+
+ tmp.tpa_exist = 1;
+
+ REG_WR(bp, BAR_TSTRORM_INTMEM + TSTORM_TPA_EXIST_OFFSET,
+ ((u32 *)&tmp)[0]);
+ REG_WR(bp, BAR_TSTRORM_INTMEM + TSTORM_TPA_EXIST_OFFSET + 4,
+ ((u32 *)&tmp)[1]);
+ }
+
return 0;
}
@@ -5073,6 +5615,11 @@ static void bnx2x_free_mem(struct bnx2x *bp)
bnx2x_fp(bp, i, rx_comp_mapping),
sizeof(struct eth_fast_path_rx_cqe) *
NUM_RCQ_BD);
+
+ /* SGE ring */
+ BNX2X_PCI_FREE(bnx2x_fp(bp, i, rx_sge_ring),
+ bnx2x_fp(bp, i, rx_sge_mapping),
+ BCM_PAGE_SIZE * NUM_RX_SGE_PAGES);
}
/* end of fastpath */
@@ -5152,6 +5699,12 @@ static int bnx2x_alloc_mem(struct bnx2x *bp)
sizeof(struct eth_fast_path_rx_cqe) *
NUM_RCQ_BD);
+ /* SGE ring */
+ BNX2X_ALLOC(bnx2x_fp(bp, i, rx_page_ring),
+ sizeof(struct sw_rx_page) * NUM_RX_SGE);
+ BNX2X_PCI_ALLOC(bnx2x_fp(bp, i, rx_sge_ring),
+ &bnx2x_fp(bp, i, rx_sge_mapping),
+ BCM_PAGE_SIZE * NUM_RX_SGE_PAGES);
}
/* end of fastpath */
@@ -5242,6 +5795,9 @@ static void bnx2x_free_rx_skbs(struct bnx2x *bp)
rx_buf->skb = NULL;
dev_kfree_skb(skb);
}
+ if (!fp->disable_tpa)
+ bnx2x_free_tpa_pool(bp, fp,
+ ETH_MAX_AGGREGATION_QUEUES_E1H);
}
}
@@ -5595,6 +6151,10 @@ static int bnx2x_nic_load(struct bnx2x *bp, int load_mode)
if (bnx2x_alloc_mem(bp))
return -ENOMEM;
+ for_each_queue(bp, i)
+ bnx2x_fp(bp, i, disable_tpa) =
+ ((bp->flags & TPA_ENABLE_FLAG) == 0);
+
/* Disable ISR calls until we initialize HW */
atomic_set(&bp->intr_sem, 1);
@@ -5723,6 +6283,11 @@ load_int_disable:
/* Release IRQs */
bnx2x_free_irq(bp);
+ /* Free SKBs, SGEs, TPA pool and driver internals */
+ bnx2x_free_skbs(bp);
+ for_each_queue(bp, i)
+ bnx2x_free_rx_sge_range(bp, bp->fp + i,
+ RX_SGE_CNT*NUM_RX_SGE_PAGES);
load_error:
bnx2x_free_mem(bp);
@@ -5895,6 +6460,10 @@ static int bnx2x_nic_unload(struct bnx2x *bp, int unload_mode)
for_each_queue(bp, i) {
struct bnx2x_fastpath *fp = &bp->fp[i];
+#ifdef BNX2X_STOP_ON_ERROR
+ DP(NETIF_MSG_IFDOWN, "fp->tpa_queue_used = 0x%llx\n",
+ fp->tpa_queue_used);
+#endif
cnt = 1000;
while (bnx2x_has_work(fp)) {
msleep(1);
@@ -5994,8 +6563,11 @@ unload_error:
if (!BP_NOMCP(bp))
bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_DONE);
- /* Free SKBs and driver internals */
+ /* Free SKBs, SGEs, TPA pool and driver internals */
bnx2x_free_skbs(bp);
+ for_each_queue(bp, i)
+ bnx2x_free_rx_sge_range(bp, bp->fp + i,
+ RX_SGE_CNT*NUM_RX_SGE_PAGES);
bnx2x_free_mem(bp);
bp->state = BNX2X_STATE_CLOSED;
@@ -6671,6 +7243,13 @@ static int bnx2x_init_bp(struct bnx2x *bp)
printk(KERN_ERR PFX
"MCP disabled, must load devices in order!\n");
+ /* Set TPA flags */
+ if (disable_tpa)
+ bp->flags &= ~TPA_ENABLE_FLAG;
+ else
+ bp->flags |= TPA_ENABLE_FLAG;
+
+
bp->tx_ring_size = MAX_TX_AVAIL;
bp->rx_ring_size = MAX_RX_AVAIL;
--
1.5.5
--
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