From a2c64b67c6226f923ed6ee0b2f611675abc06686 Mon Sep 17 00:00:00 2001 From: Raghu Vatsavayi Date: Sun, 3 Jul 2016 13:56:55 -0700 Subject: [PATCH] liquidio: Remove redundant code This patch removes redundant file includes and conditions. Provides some meaningful comments and code alignment. Signed-off-by: Derek Chickles Signed-off-by: Satanand Burla Signed-off-by: Felix Manlunas Signed-off-by: Raghu Vatsavayi Signed-off-by: David S. Miller --- .../ethernet/cavium/liquidio/cn66xx_device.c | 2 +- .../ethernet/cavium/liquidio/cn68xx_regs.h | 1 - .../ethernet/cavium/liquidio/lio_ethtool.c | 18 +++++-------- .../net/ethernet/cavium/liquidio/lio_main.c | 26 +++++++++---------- .../cavium/liquidio/liquidio_common.h | 5 ++-- .../ethernet/cavium/liquidio/octeon_config.h | 4 +-- .../ethernet/cavium/liquidio/octeon_console.c | 12 ++++----- .../ethernet/cavium/liquidio/octeon_device.c | 4 +-- .../ethernet/cavium/liquidio/octeon_device.h | 4 +-- .../ethernet/cavium/liquidio/octeon_droq.c | 13 +++++++--- .../net/ethernet/cavium/liquidio/octeon_iq.h | 2 +- .../ethernet/cavium/liquidio/octeon_network.h | 1 - .../cavium/liquidio/request_manager.c | 6 +++-- 13 files changed, 51 insertions(+), 47 deletions(-) diff --git a/drivers/net/ethernet/cavium/liquidio/cn66xx_device.c b/drivers/net/ethernet/cavium/liquidio/cn66xx_device.c index 6271c57255a6..c03d37016a48 100644 --- a/drivers/net/ethernet/cavium/liquidio/cn66xx_device.c +++ b/drivers/net/ethernet/cavium/liquidio/cn66xx_device.c @@ -219,7 +219,7 @@ void lio_cn6xxx_setup_global_output_regs(struct octeon_device *oct) /* / Select Packet count instead of bytes for SLI_PKTi_CNTS[CNT] */ octeon_write_csr(oct, CN6XXX_SLI_PKT_OUT_BMODE, 0); - /* / Select ES,RO,NS setting from register for Output Queue Packet + /* Select ES, RO, NS setting from register for Output Queue Packet * Address */ octeon_write_csr(oct, CN6XXX_SLI_PKT_DPADDR, 0xFFFFFFFF); diff --git a/drivers/net/ethernet/cavium/liquidio/cn68xx_regs.h b/drivers/net/ethernet/cavium/liquidio/cn68xx_regs.h index 38cddbd107b6..d45a0f4aaf1f 100644 --- a/drivers/net/ethernet/cavium/liquidio/cn68xx_regs.h +++ b/drivers/net/ethernet/cavium/liquidio/cn68xx_regs.h @@ -29,7 +29,6 @@ #ifndef __CN68XX_REGS_H__ #define __CN68XX_REGS_H__ -#include "cn66xx_regs.h" /*###################### REQUEST QUEUE #########################*/ diff --git a/drivers/net/ethernet/cavium/liquidio/lio_ethtool.c b/drivers/net/ethernet/cavium/liquidio/lio_ethtool.c index 82f20c9a73eb..289eb8907922 100644 --- a/drivers/net/ethernet/cavium/liquidio/lio_ethtool.c +++ b/drivers/net/ethernet/cavium/liquidio/lio_ethtool.c @@ -464,18 +464,16 @@ static int lio_set_phys_id(struct net_device *netdev, /* Configure Beacon values */ value = LIO68XX_LED_BEACON_CFGON; - ret = - octnet_mdio45_access(lio, 1, - LIO68XX_LED_BEACON_ADDR, - &value); + ret = octnet_mdio45_access(lio, 1, + LIO68XX_LED_BEACON_ADDR, + &value); if (ret) return ret; value = LIO68XX_LED_CTRL_CFGON; - ret = - octnet_mdio45_access(lio, 1, - LIO68XX_LED_CTRL_ADDR, - &value); + ret = octnet_mdio45_access(lio, 1, + LIO68XX_LED_CTRL_ADDR, + &value); if (ret) return ret; } else { @@ -961,7 +959,6 @@ static int lio_get_intr_coalesce(struct net_device *netdev, intr_coal->rx_max_coalesced_frames = CFG_GET_OQ_INTR_PKT(cn6xxx->conf); } - iq = oct->instr_queue[lio->linfo.txpciq[0].s.q_no]; intr_coal->tx_max_coalesced_frames = iq->fill_threshold; break; @@ -1688,13 +1685,12 @@ static void lio_get_regs(struct net_device *dev, int len = 0; struct octeon_device *oct = lio->oct_dev; - memset(regbuf, 0, OCT_ETHTOOL_REGDUMP_LEN); regs->version = OCT_ETHTOOL_REGSVER; switch (oct->chip_id) { - /* case OCTEON_CN73XX: Todo */ case OCTEON_CN68XX: case OCTEON_CN66XX: + memset(regbuf, 0, OCT_ETHTOOL_REGDUMP_LEN); len += cn6xxx_read_csr_reg(regbuf + len, oct); len += cn6xxx_read_config_reg(regbuf + len, oct); break; diff --git a/drivers/net/ethernet/cavium/liquidio/lio_main.c b/drivers/net/ethernet/cavium/liquidio/lio_main.c index c75734f8c80e..20d6942edf40 100644 --- a/drivers/net/ethernet/cavium/liquidio/lio_main.c +++ b/drivers/net/ethernet/cavium/liquidio/lio_main.c @@ -1258,7 +1258,7 @@ static void octeon_destroy_resources(struct octeon_device *oct) /* Nothing to be done here either */ break; - } /* end switch(oct->status) */ + } /* end switch (oct->status) */ tasklet_kill(&oct_priv->droq_tasklet); } @@ -2125,7 +2125,7 @@ static int liquidio_napi_poll(struct napi_struct *napi, int budget) /** * \brief Setup input and output queues * @param octeon_dev octeon device - * @param net_device Net device + * @param ifidx Interface Index * * Note: Queues are with respect to the octeon device. Thus * an input queue is for egress packets, and output queues @@ -2336,7 +2336,6 @@ static int liquidio_stop(struct net_device *netdev) } dev_info(&oct->pci_dev->dev, "%s interface is stopped\n", netdev->name); - module_put(THIS_MODULE); return 0; } @@ -2347,6 +2346,7 @@ void liquidio_link_ctrl_cmd_completion(void *nctrl_ptr) struct net_device *netdev = (struct net_device *)nctrl->netpndev; struct lio *lio = GET_LIO(netdev); struct octeon_device *oct = lio->oct_dev; + u8 *mac; switch (nctrl->ncmd.s.cmd) { case OCTNET_CMD_CHANGE_DEVFLAGS: @@ -2354,12 +2354,11 @@ void liquidio_link_ctrl_cmd_completion(void *nctrl_ptr) break; case OCTNET_CMD_CHANGE_MACADDR: - /* If command is successful, change the MACADDR. */ - netif_info(lio, probe, lio->netdev, " MACAddr changed to 0x%llx\n", - CVM_CAST64(nctrl->udd[0])); - dev_info(&oct->pci_dev->dev, "%s MACAddr changed to 0x%llx\n", - netdev->name, CVM_CAST64(nctrl->udd[0])); - memcpy(netdev->dev_addr, ((u8 *)&nctrl->udd[0]) + 2, ETH_ALEN); + mac = ((u8 *)&nctrl->udd[0]) + 2; + netif_info(lio, probe, lio->netdev, + "%s %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x\n", + "MACAddr changed to", mac[0], mac[1], + mac[2], mac[3], mac[4], mac[5]); break; case OCTNET_CMD_CHANGE_MTU: @@ -2940,12 +2939,12 @@ static int liquidio_xmit(struct sk_buff *skb, struct net_device *netdev) /* defer sending if queue is full */ stats->tx_iq_busy++; netif_info(lio, tx_err, lio->netdev, "Transmit failed iq:%d full\n", - ndata.q_no); + lio->txq); return NETDEV_TX_BUSY; } } /* pr_info(" XMIT - valid Qs: %d, 1st Q no: %d, cpu: %d, q_no:%d\n", - * lio->linfo.num_txpciq, lio->txq, cpu, ndata.q_no ); + * lio->linfo.num_txpciq, lio->txq, cpu, ndata.q_no); */ ndata.datasize = skb->len; @@ -2969,6 +2968,7 @@ static int liquidio_xmit(struct sk_buff *skb, struct net_device *netdev) if (skb_shinfo(skb)->nr_frags == 0) { cmdsetup.s.u.datasize = skb->len; octnet_prepare_pci_cmd(oct, &ndata.cmd, &cmdsetup, tag); + /* Offload checksum calculation for TCP/UDP packets */ dptr = dma_map_single(&oct->pci_dev->dev, skb->data, @@ -3716,8 +3716,8 @@ static int setup_nic_devices(struct octeon_device *octeon_dev) octeon_dev->priv_flags = 0x0; if (netdev->features & NETIF_F_LRO) - liquidio_set_feature(netdev, OCTNET_CMD_LRO_ENABLE, - OCTNIC_LROIPV4 | OCTNIC_LROIPV6); + liquidio_set_feature(netdev, OCTNET_CMD_LRO_ENABLE, + OCTNIC_LROIPV4 | OCTNIC_LROIPV6); liquidio_set_feature(netdev, OCTNET_CMD_ENABLE_VLAN_FILTER, 0); diff --git a/drivers/net/ethernet/cavium/liquidio/liquidio_common.h b/drivers/net/ethernet/cavium/liquidio/liquidio_common.h index c6e3d57e3837..603d20564092 100644 --- a/drivers/net/ethernet/cavium/liquidio/liquidio_common.h +++ b/drivers/net/ethernet/cavium/liquidio/liquidio_common.h @@ -34,6 +34,7 @@ #define LIQUIDIO_MICRO_VERSION ".1" #define LIQUIDIO_PACKAGE "" #define LIQUIDIO_VERSION "1.4.1" + #define CONTROL_IQ 0 /** Tag types used by Octeon cores in its work. */ enum octeon_tag_type { @@ -295,7 +296,7 @@ union octnet_cmd { #define OCTNET_CMD_SIZE (sizeof(union octnet_cmd)) -/* Instruction Header (DPI - CN23xx) - for OCTEON-III models */ +/* Instruction Header(DPI) - for OCTEON-III models */ struct octeon_instr_ih3 { #ifdef __BIG_ENDIAN_BITFIELD @@ -345,7 +346,7 @@ struct octeon_instr_ih3 { #endif }; -/* Optional PKI Instruction Header(PKI IH) - for OCTEON CN23XX models */ +/* Optional PKI Instruction Header(PKI IH) - for OCTEON-III models */ /** BIG ENDIAN format. */ struct octeon_instr_pki_ih3 { #ifdef __BIG_ENDIAN_BITFIELD diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_config.h b/drivers/net/ethernet/cavium/liquidio/octeon_config.h index 4b8c948400be..b3396e3a8bab 100644 --- a/drivers/net/ethernet/cavium/liquidio/octeon_config.h +++ b/drivers/net/ethernet/cavium/liquidio/octeon_config.h @@ -226,7 +226,7 @@ struct octeon_oq_config { */ u64 refill_threshold:16; - /** If set, the Output queue uses info-pointer mode. (Default: 1 ) */ + /** If set, the Output queue uses info-pointer mode. (Default: 1) */ u64 info_ptr:32; /* Max number of OQs available */ @@ -236,7 +236,7 @@ struct octeon_oq_config { /* Max number of OQs available */ u64 max_oqs:8; - /** If set, the Output queue uses info-pointer mode. (Default: 1 ) */ + /** If set, the Output queue uses info-pointer mode. (Default: 1) */ u64 info_ptr:32; /** The number of buffers that were consumed during packet processing by diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_console.c b/drivers/net/ethernet/cavium/liquidio/octeon_console.c index 70a8cd3cac17..bbb50ea66f16 100644 --- a/drivers/net/ethernet/cavium/liquidio/octeon_console.c +++ b/drivers/net/ethernet/cavium/liquidio/octeon_console.c @@ -223,7 +223,7 @@ static void CVMX_BOOTMEM_NAMED_GET_NAME(struct octeon_device *oct, u32 len) { addr += offsetof(struct cvmx_bootmem_named_block_desc, name); - octeon_pci_read_core_mem(oct, addr, str, len); + octeon_pci_read_core_mem(oct, addr, (u8 *)str, len); str[len] = 0; } @@ -375,7 +375,7 @@ static void octeon_remote_unlock(void) int octeon_console_send_cmd(struct octeon_device *oct, char *cmd_str, u32 wait_hundredths) { - u32 len = strlen(cmd_str); + u32 len = (u32)strlen(cmd_str); dev_dbg(&oct->pci_dev->dev, "sending \"%s\" to bootloader\n", cmd_str); @@ -483,7 +483,7 @@ static void check_console(struct work_struct *work) struct octeon_console *console; struct cavium_wk *wk = (struct cavium_wk *)work; struct octeon_device *oct = (struct octeon_device *)wk->ctxptr; - size_t console_num = wk->ctxul; + u32 console_num = (u32)wk->ctxul; u32 delay; console = &oct->console[console_num]; @@ -506,7 +506,7 @@ static void check_console(struct work_struct *work) console_buffer, bytes_read); } } else if (bytes_read < 0) { - dev_err(&oct->pci_dev->dev, "Error reading console %lu, ret=%d\n", + dev_err(&oct->pci_dev->dev, "Error reading console %u, ret=%d\n", console_num, bytes_read); } @@ -518,7 +518,7 @@ static void check_console(struct work_struct *work) */ if (octeon_console_debug_enabled(console_num) && (total_read == 0) && (console->leftover[0])) { - dev_info(&oct->pci_dev->dev, "%lu: %s\n", + dev_info(&oct->pci_dev->dev, "%u: %s\n", console_num, console->leftover); console->leftover[0] = '\0'; } @@ -700,7 +700,7 @@ static int octeon_console_read(struct octeon_device *oct, u32 console_num, bytes_to_read = console->buffer_size - rd_idx; octeon_pci_read_core_mem(oct, console->output_base_addr + rd_idx, - buffer, bytes_to_read); + (u8 *)buffer, bytes_to_read); octeon_write_device_mem32(oct, console->addr + offsetof(struct octeon_pci_console, output_read_index), diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_device.c b/drivers/net/ethernet/cavium/liquidio/octeon_device.c index fda93be783e2..0eb504a4379a 100644 --- a/drivers/net/ethernet/cavium/liquidio/octeon_device.c +++ b/drivers/net/ethernet/cavium/liquidio/octeon_device.c @@ -440,10 +440,10 @@ static struct octeon_config_ptr { }; static char oct_dev_state_str[OCT_DEV_STATES + 1][32] = { - "BEGIN", "PCI-MAP-DONE", "DISPATCH-INIT-DONE", + "BEGIN", "PCI-MAP-DONE", "DISPATCH-INIT-DONE", "IQ-INIT-DONE", "SCBUFF-POOL-INIT-DONE", "RESPLIST-INIT-DONE", "DROQ-INIT-DONE", "IO-QUEUES-INIT-DONE", "CONSOLE-INIT-DONE", - "HOST-READY", "CORE-READY", "RUNNING", "IN-RESET", + "HOST-READY", "CORE-READY", "RUNNING", "IN-RESET", "INVALID" }; diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_device.h b/drivers/net/ethernet/cavium/liquidio/octeon_device.h index 579acd427fd7..01edfb404346 100644 --- a/drivers/net/ethernet/cavium/liquidio/octeon_device.h +++ b/drivers/net/ethernet/cavium/liquidio/octeon_device.h @@ -221,7 +221,7 @@ struct octeon_fn_list { /* Structure for named memory blocks * Number of descriptors - * available can be changed without affecting compatiblity, + * available can be changed without affecting compatibility, * but name length changes require a bump in the bootmem * descriptor version * Note: This structure must be naturally 64 bit aligned, as a single @@ -254,7 +254,7 @@ struct oct_fw_info { struct cavium_wk { struct delayed_work work; void *ctxptr; - size_t ctxul; + u64 ctxul; }; struct cavium_wq { diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_droq.c b/drivers/net/ethernet/cavium/liquidio/octeon_droq.c index 93ab4ecd2a61..e0afe4c1fd01 100644 --- a/drivers/net/ethernet/cavium/liquidio/octeon_droq.c +++ b/drivers/net/ethernet/cavium/liquidio/octeon_droq.c @@ -92,6 +92,11 @@ static inline void *octeon_get_dispatch_arg(struct octeon_device *octeon_dev, return fn_arg; } +/** Check for packets on Droq. This function should be called with + * lock held. + * @param droq - Droq on which count is checked. + * @return Returns packet count. + */ u32 octeon_droq_check_hw_for_pkts(struct octeon_droq *droq) { u32 pkt_count = 0; @@ -183,7 +188,6 @@ octeon_droq_setup_ring_buffers(struct octeon_device *oct, droq->recv_buf_list[i].buffer = buf; droq->recv_buf_list[i].data = get_rbd(buf); - droq->info_list[i].length = 0; /* map ring buffers into memory */ @@ -556,7 +560,9 @@ octeon_droq_dispatch_pkt(struct octeon_device *oct, droq->stats.dropped_nomem++; } } else { - dev_err(&oct->pci_dev->dev, "DROQ: No dispatch function\n"); + dev_err(&oct->pci_dev->dev, "DROQ: No dispatch function (opcode %u/%u)\n", + (unsigned int)rh->r.opcode, + (unsigned int)rh->r.subcode); droq->stats.dropped_nodispatch++; } /* else (dispatch_fn ... */ @@ -641,6 +647,7 @@ octeon_droq_fast_process_packets(struct octeon_device *oct, pg_info->page = NULL; droq->recv_buf_list[droq->read_idx].buffer = NULL; + INCR_INDEX_BY1(droq->read_idx, droq->max_count); droq->refill_count++; } else { @@ -735,7 +742,7 @@ octeon_droq_process_packets(struct octeon_device *oct, if (pkt_count > budget) pkt_count = budget; - /* Grab the lock */ + /* Grab the droq lock */ spin_lock(&droq->lock); pkts_processed = octeon_droq_fast_process_packets(oct, droq, pkt_count); diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_iq.h b/drivers/net/ethernet/cavium/liquidio/octeon_iq.h index 5ac7e665a09d..ff4b1d6f007b 100644 --- a/drivers/net/ethernet/cavium/liquidio/octeon_iq.h +++ b/drivers/net/ethernet/cavium/liquidio/octeon_iq.h @@ -99,7 +99,7 @@ struct octeon_instr_queue { u32 rsvd:17; - /* Controls the periodic flushing of iq */ + /* Controls whether extra flushing of IQ is done on Tx */ u32 do_auto_flush:1; u32 status:8; diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_network.h b/drivers/net/ethernet/cavium/liquidio/octeon_network.h index ab4186667885..fb820dc7fcb7 100644 --- a/drivers/net/ethernet/cavium/liquidio/octeon_network.h +++ b/drivers/net/ethernet/cavium/liquidio/octeon_network.h @@ -124,7 +124,6 @@ struct lio { /* work queue for txq status */ struct cavium_wq txq_status_wq; - }; #define LIO_SIZE (sizeof(struct lio)) diff --git a/drivers/net/ethernet/cavium/liquidio/request_manager.c b/drivers/net/ethernet/cavium/liquidio/request_manager.c index 3f7044ceabf2..d32492f185ff 100644 --- a/drivers/net/ethernet/cavium/liquidio/request_manager.c +++ b/drivers/net/ethernet/cavium/liquidio/request_manager.c @@ -349,6 +349,7 @@ __add_to_request_list(struct octeon_instr_queue *iq, iq->request_list[idx].reqtype = reqtype; } +/* Can only run in process context */ int lio_process_iq_request_list(struct octeon_device *oct, struct octeon_instr_queue *iq, u32 napi_budget) @@ -405,6 +406,7 @@ lio_process_iq_request_list(struct octeon_device *oct, flags); } else { if (sc->callback) { + /* This callback must not sleep */ sc->callback(oct, OCTEON_REQUEST_DONE, sc->callback_arg); } @@ -521,7 +523,7 @@ static void check_db_timeout(struct work_struct *work) { struct cavium_wk *wk = (struct cavium_wk *)work; struct octeon_device *oct = (struct octeon_device *)wk->ctxptr; - unsigned long iq_no = wk->ctxul; + u64 iq_no = wk->ctxul; struct cavium_wq *db_wq = &oct->check_db_wq[iq_no]; u32 delay = 10; @@ -550,7 +552,7 @@ octeon_send_command(struct octeon_device *oct, u32 iq_no, INCR_INSTRQUEUE_PKT_COUNT(oct, iq_no, bytes_sent, datasize); INCR_INSTRQUEUE_PKT_COUNT(oct, iq_no, instr_posted, 1); - if (iq->fill_cnt >= iq->fill_threshold || force_db) + if (force_db) ring_doorbell(oct, iq); } else { INCR_INSTRQUEUE_PKT_COUNT(oct, iq_no, instr_dropped, 1); -- GitLab