From: Sreenivasa Honnur Date: Wed, 23 Apr 2008 17:29:42 +0000 (-0400) Subject: S2io: Removed receive buffer replenishment tasklet X-Git-Tag: v2.6.26-rc1~1067^2~1^2~34 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=99993af6981aaf8d212a5efa888a19c9db152d58;p=linux-2.6 S2io: Removed receive buffer replenishment tasklet - Removed receive buffer replenishment tasklet s2io_tasklet and instead allocating the receive buffers in either the interrupt handler (no napi) or the napi handler (napi enabled). Signed-off-by: Surjit Reang Signed-off-by: Sreenivasa Honnur Signed-off-by: Ramkrishna Vepa Signed-off-by: Jeff Garzik --- diff --git a/drivers/net/s2io.c b/drivers/net/s2io.c index 81fd7abc27..4344e6ed90 100644 --- a/drivers/net/s2io.c +++ b/drivers/net/s2io.c @@ -117,20 +117,6 @@ static inline int RXD_IS_UP2DT(struct RxD_t *rxdp) #define LINK_IS_UP(val64) (!(val64 & (ADAPTER_STATUS_RMAC_REMOTE_FAULT | \ ADAPTER_STATUS_RMAC_LOCAL_FAULT))) -#define TASKLET_IN_USE test_and_set_bit(0, (&sp->tasklet_status)) -#define PANIC 1 -#define LOW 2 -static inline int rx_buffer_level(struct s2io_nic * sp, int rxb_size, int ring) -{ - struct mac_info *mac_control; - - mac_control = &sp->mac_control; - if (rxb_size <= rxd_count[sp->rxd_mode]) - return PANIC; - else if ((mac_control->rings[ring].pkt_cnt - rxb_size) > 16) - return LOW; - return 0; -} static inline int is_s2io_card_up(const struct s2io_nic * sp) { @@ -4105,7 +4091,6 @@ static int s2io_close(struct net_device *dev) do_s2io_delete_unicast_mc(sp, tmp64); } - /* Reset card, kill tasklet and free Tx and Rx buffers. */ s2io_card_down(sp); return 0; @@ -4370,29 +4355,9 @@ s2io_alarm_handle(unsigned long data) static int s2io_chk_rx_buffers(struct s2io_nic *sp, int rng_n) { - int rxb_size, level; - - if (!sp->lro) { - rxb_size = atomic_read(&sp->rx_bufs_left[rng_n]); - level = rx_buffer_level(sp, rxb_size, rng_n); - - if ((level == PANIC) && (!TASKLET_IN_USE)) { - int ret; - DBG_PRINT(INTR_DBG, "%s: Rx BD hit ", __FUNCTION__); - DBG_PRINT(INTR_DBG, "PANIC levels\n"); - if ((ret = fill_rx_buffers(sp, rng_n)) == -ENOMEM) { - DBG_PRINT(INFO_DBG, "Out of memory in %s", - __FUNCTION__); - clear_bit(0, (&sp->tasklet_status)); - return -1; - } - clear_bit(0, (&sp->tasklet_status)); - } else if (level == LOW) - tasklet_schedule(&sp->task); - - } else if (fill_rx_buffers(sp, rng_n) == -ENOMEM) { - DBG_PRINT(INFO_DBG, "%s:Out of memory", sp->dev->name); - DBG_PRINT(INFO_DBG, " in Rx Intr!!\n"); + if (fill_rx_buffers(sp, rng_n) == -ENOMEM) { + DBG_PRINT(INFO_DBG, "%s:Out of memory", sp->dev->name); + DBG_PRINT(INFO_DBG, " in Rx Intr!!\n"); } return 0; } @@ -6769,49 +6734,6 @@ static int s2io_change_mtu(struct net_device *dev, int new_mtu) return ret; } -/** - * s2io_tasklet - Bottom half of the ISR. - * @dev_adr : address of the device structure in dma_addr_t format. - * Description: - * This is the tasklet or the bottom half of the ISR. This is - * an extension of the ISR which is scheduled by the scheduler to be run - * when the load on the CPU is low. All low priority tasks of the ISR can - * be pushed into the tasklet. For now the tasklet is used only to - * replenish the Rx buffers in the Rx buffer descriptors. - * Return value: - * void. - */ - -static void s2io_tasklet(unsigned long dev_addr) -{ - struct net_device *dev = (struct net_device *) dev_addr; - struct s2io_nic *sp = dev->priv; - int i, ret; - struct mac_info *mac_control; - struct config_param *config; - - mac_control = &sp->mac_control; - config = &sp->config; - - if (!TASKLET_IN_USE) { - for (i = 0; i < config->rx_ring_num; i++) { - ret = fill_rx_buffers(sp, i); - if (ret == -ENOMEM) { - DBG_PRINT(INFO_DBG, "%s: Out of ", - dev->name); - DBG_PRINT(INFO_DBG, "memory in tasklet\n"); - break; - } else if (ret == -EFILL) { - DBG_PRINT(INFO_DBG, - "%s: Rx Ring %d is full\n", - dev->name, i); - break; - } - } - clear_bit(0, (&sp->tasklet_status)); - } -} - /** * s2io_set_link - Set the LInk status * @data: long pointer to device private structue @@ -7186,9 +7108,6 @@ static void do_s2io_card_down(struct s2io_nic * sp, int do_io) s2io_rem_isr(sp); - /* Kill tasklet. */ - tasklet_kill(&sp->task); - /* Check if the device is Quiescent and then Reset the NIC */ while(do_io) { /* As per the HW requirement we need to replenish the @@ -7314,9 +7233,6 @@ static int s2io_card_up(struct s2io_nic * sp) S2IO_TIMER_CONF(sp->alarm_timer, s2io_alarm_handle, sp, (HZ/2)); - /* Enable tasklet for the device */ - tasklet_init(&sp->task, s2io_tasklet, (unsigned long) dev); - /* Enable select interrupts */ en_dis_err_alarms(sp, ENA_ALL_INTRS, ENABLE_INTRS); if (sp->config.intr_type != INTA) @@ -8119,10 +8035,9 @@ s2io_init_nic(struct pci_dev *pdev, const struct pci_device_id *pre) s2io_reset(sp); /* - * Initialize the tasklet status and link state flags + * Initialize link state flags * and the card state parameter */ - sp->tasklet_status = 0; sp->state = 0; /* Initialize spinlocks */ diff --git a/drivers/net/s2io.h b/drivers/net/s2io.h index e68fdf7e42..e3136cfd6d 100644 --- a/drivers/net/s2io.h +++ b/drivers/net/s2io.h @@ -868,8 +868,6 @@ struct s2io_nic { int device_enabled_once; char name[60]; - struct tasklet_struct task; - volatile unsigned long tasklet_status; /* Timer that handles I/O errors/exceptions */ struct timer_list alarm_timer; @@ -1094,7 +1092,6 @@ static void s2io_handle_errors(void * dev_id); static int s2io_starter(void); static void s2io_closer(void); static void s2io_tx_watchdog(struct net_device *dev); -static void s2io_tasklet(unsigned long dev_addr); static void s2io_set_multicast(struct net_device *dev); static int rx_osm_handler(struct ring_info *ring_data, struct RxD_t * rxdp); static void s2io_link(struct s2io_nic * sp, int link);