/* * Generic driver for AD1848/AD1847/CS4248 chips (0.1 Alpha) * Copyright (c) by Tugrul Galatali , * Jaroslav Kysela * Based on card-4232.c by Jaroslav Kysela * * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */ #include #include #include #include #include #include #include #include #include #define CRD_NAME "Generic AD1848/AD1847/CS4248" #define DEV_NAME "ad1848" MODULE_DESCRIPTION(CRD_NAME); MODULE_AUTHOR("Tugrul Galatali , Jaroslav Kysela "); MODULE_LICENSE("GPL"); MODULE_SUPPORTED_DEVICE("{{Analog Devices,AD1848}," "{Analog Devices,AD1847}," "{Crystal Semiconductors,CS4248}}"); static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */ static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* PnP setup */ static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 5,7,9,11,12,15 */ static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 0,1,3,5,6,7 */ static bool thinkpad[SNDRV_CARDS]; /* Thinkpad special case */ module_param_array(index, int, NULL, 0444); MODULE_PARM_DESC(index, "Index value for " CRD_NAME " soundcard."); module_param_array(id, charp, NULL, 0444); MODULE_PARM_DESC(id, "ID string for " CRD_NAME " soundcard."); module_param_array(enable, bool, NULL, 0444); MODULE_PARM_DESC(enable, "Enable " CRD_NAME " soundcard."); module_param_array(port, long, NULL, 0444); MODULE_PARM_DESC(port, "Port # for " CRD_NAME " driver."); module_param_array(irq, int, NULL, 0444); MODULE_PARM_DESC(irq, "IRQ # for " CRD_NAME " driver."); module_param_array(dma1, int, NULL, 0444); MODULE_PARM_DESC(dma1, "DMA1 # for " CRD_NAME " driver."); module_param_array(thinkpad, bool, NULL, 0444); MODULE_PARM_DESC(thinkpad, "Enable only for the onboard CS4248 of IBM Thinkpad 360/750/755 series."); static int snd_ad1848_match(struct device *dev, unsigned int n) { if (!enable[n]) return 0; if (port[n] == SNDRV_AUTO_PORT) { dev_err(dev, "please specify port\n"); return 0; } if (irq[n] == SNDRV_AUTO_IRQ) { dev_err(dev, "please specify irq\n"); return 0; } if (dma1[n] == SNDRV_AUTO_DMA) { dev_err(dev, "please specify dma1\n"); return 0; } return 1; } static int snd_ad1848_probe(struct device *dev, unsigned int n) { struct snd_card *card; struct snd_wss *chip; int error; error = snd_card_new(dev, index[n], id[n], THIS_MODULE, 0, &card); if (error < 0) return error; error = snd_wss_create(card, port[n], -1, irq[n], dma1[n], -1, thinkpad[n] ? WSS_HW_THINKPAD : WSS_HW_DETECT, 0, &chip); if (error < 0) goto out; card->private_data = chip; error = snd_wss_pcm(chip, 0); if (error < 0) goto out; error = snd_wss_mixer(chip); if (error < 0) goto out; strcpy(card->driver, "AD1848"); strcpy(card->shortname, chip->pcm->name); sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d", chip->pcm->name, chip->port, irq[n], dma1[n]); if (thinkpad[n]) strcat(card->longname, " [Thinkpad]"); error = snd_card_register(card); if (error < 0) goto out; dev_set_drvdata(dev, card); return 0; out: snd_card_free(card); return error; } static int snd_ad1848_remove(struct device *dev, unsigned int n) { snd_card_free(dev_get_drvdata(dev)); return 0; } #ifdef CONFIG_PM static int snd_ad1848_suspend(struct device *dev, unsigned int n, pm_message_t state) { struct snd_card *card = dev_get_drvdata(dev); struct snd_wss *chip = card->private_data; snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); chip->suspend(chip); return 0; } static int snd_ad1848_resume(struct device *dev, unsigned int n) { struct snd_card *card = dev_get_drvdata(dev); struct snd_wss *chip = card->private_data; chip->resume(chip); snd_power_change_state(card, SNDRV_CTL_POWER_D0); return 0; } #endif static struct isa_driver snd_ad1848_driver = { .match = snd_ad1848_match, .probe = snd_ad1848_probe, .remove = snd_ad1848_remove, #ifdef CONFIG_PM .suspend = snd_ad1848_suspend, .resume = snd_ad1848_resume, #endif .driver = { .name = DEV_NAME } }; module_isa_driver(snd_ad1848_driver, SNDRV_CARDS); ' class='oid'>b237da21e982d0cc5700448b12e375a3bf196363 /net parent5c178d81b69f08ca3195427a6ea9a46d9af23127 (diff)
netfilter: nft_ct: add zone id set support
zones allow tracking multiple connections sharing identical tuples, this is needed e.g. when tracking distinct vlans with overlapping ip addresses (conntrack is l2 agnostic). Thus the zone has to be set before the packet is picked up by the connection tracker. This is done by means of 'conntrack templates' which are conntrack structures used solely to pass this info from one netfilter hook to the next. The iptables CT target instantiates these connection tracking templates once per rule, i.e. the template is fixed/tied to particular zone, can be read-only and therefore be re-used by as many skbs simultaneously as needed. We can't follow this model because we want to take the zone id from an sreg at rule eval time so we could e.g. fill in the zone id from the packets vlan id or a e.g. nftables key : value maps. To avoid cost of per packet alloc/free of the template, use a percpu template 'scratch' object and use the refcount to detect the (unlikely) case where the template is still attached to another skb (i.e., previous skb was nfqueued ...). Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net')
-rw-r--r--net/netfilter/nft_ct.c144
1 files changed, 143 insertions, 1 deletions
diff --git a/net/netfilter/nft_ct.c b/net/netfilter/nft_ct.c