Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932326Ab1DLOjF (ORCPT ); Tue, 12 Apr 2011 10:39:05 -0400 Received: from kroah.org ([198.145.64.141]:57895 "EHLO coco.kroah.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932479Ab1DLOjA (ORCPT ); Tue, 12 Apr 2011 10:39:00 -0400 X-Mailbox-Line: From gregkh@clark.kroah.org Tue Apr 12 07:35:58 2011 Message-Id: <20110412143558.774730234@clark.kroah.org> User-Agent: quilt/0.48-16.4 Date: Tue, 12 Apr 2011 07:35:30 -0700 From: Greg KH To: linux-kernel@vger.kernel.org, stable@kernel.org Cc: stable-review@kernel.org, torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, "Philip A. Prindeville" , "David S. Miller" Subject: [101/105] atm/solos-pci: Dont flap VCs when carrier state changes In-Reply-To: <20110412143613.GA19478@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3840 Lines: 111 2.6.38-stable review patch. If anyone has any objections, please let us know. ------------------ From: Philip A. Prindeville commit c031235b395433350f25943b7580a5e343c7b7b2 upstream. Don't flap VCs when carrier state changes; higher-level protocols can detect loss of connectivity and act accordingly. This is more consistent with how other network interfaces work. We no longer use release_vccs() so we can delete it. release_vccs() was duplicated from net/atm/common.c; make the corresponding function exported, since other code duplicates it and could leverage it if it were public. Signed-off-by: Philip A. Prindeville Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- drivers/atm/solos-pci.c | 26 +------------------------- include/linux/atmdev.h | 1 + net/atm/common.c | 1 + 3 files changed, 3 insertions(+), 25 deletions(-) --- a/drivers/atm/solos-pci.c +++ b/drivers/atm/solos-pci.c @@ -165,7 +165,6 @@ static uint32_t fpga_tx(struct solos_car static irqreturn_t solos_irq(int irq, void *dev_id); static struct atm_vcc* find_vcc(struct atm_dev *dev, short vpi, int vci); static int list_vccs(int vci); -static void release_vccs(struct atm_dev *dev); static int atm_init(struct solos_card *, struct device *); static void atm_remove(struct solos_card *); static int send_command(struct solos_card *card, int dev, const char *buf, size_t size); @@ -384,7 +383,6 @@ static int process_status(struct solos_c /* Anything but 'Showtime' is down */ if (strcmp(state_str, "Showtime")) { atm_dev_signal_change(card->atmdev[port], ATM_PHY_SIG_LOST); - release_vccs(card->atmdev[port]); dev_info(&card->dev->dev, "Port %d: %s\n", port, state_str); return 0; } @@ -830,28 +828,6 @@ static int list_vccs(int vci) return num_found; } -static void release_vccs(struct atm_dev *dev) -{ - int i; - - write_lock_irq(&vcc_sklist_lock); - for (i = 0; i < VCC_HTABLE_SIZE; i++) { - struct hlist_head *head = &vcc_hash[i]; - struct hlist_node *node, *tmp; - struct sock *s; - struct atm_vcc *vcc; - - sk_for_each_safe(s, node, tmp, head) { - vcc = atm_sk(s); - if (vcc->dev == dev) { - vcc_release_async(vcc, -EPIPE); - sk_del_node_init(s); - } - } - } - write_unlock_irq(&vcc_sklist_lock); -} - static int popen(struct atm_vcc *vcc) { @@ -1269,7 +1245,7 @@ static int atm_init(struct solos_card *c card->atmdev[i]->ci_range.vci_bits = 16; card->atmdev[i]->dev_data = card; card->atmdev[i]->phy_data = (void *)(unsigned long)i; - atm_dev_signal_change(card->atmdev[i], ATM_PHY_SIG_UNKNOWN); + atm_dev_signal_change(card->atmdev[i], ATM_PHY_SIG_FOUND); skb = alloc_skb(sizeof(*header), GFP_ATOMIC); if (!skb) { --- a/include/linux/atmdev.h +++ b/include/linux/atmdev.h @@ -443,6 +443,7 @@ void atm_dev_signal_change(struct atm_de void vcc_insert_socket(struct sock *sk); +void atm_dev_release_vccs(struct atm_dev *dev); /* * This is approximately the algorithm used by alloc_skb. --- a/net/atm/common.c +++ b/net/atm/common.c @@ -252,6 +252,7 @@ void atm_dev_release_vccs(struct atm_dev } write_unlock_irq(&vcc_sklist_lock); } +EXPORT_SYMBOL(atm_dev_release_vccs); static int adjust_tp(struct atm_trafprm *tp, unsigned char aal) { -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/