From d4d84fef6d0366b585b7de13527a0faeca84d9ce Mon Sep 17 00:00:00 2001 From: Chris Metcalf Date: Thu, 2 Jun 2011 10:19:41 -0400 Subject: slub: always align cpu_slab to honor cmpxchg_double requirement On an architecture without CMPXCHG_LOCAL but with DEBUG_VM enabled, the VM_BUG_ON() in __pcpu_double_call_return_bool() will cause an early panic during boot unless we always align cpu_slab properly. In principle we could remove the alignment-testing VM_BUG_ON() for architectures that don't have CMPXCHG_LOCAL, but leaving it in means that new code will tend not to break x86 even if it is introduced on another platform, and it's low cost to require alignment. Acked-by: David Rientjes Acked-by: Christoph Lameter Signed-off-by: Chris Metcalf Signed-off-by: Pekka Enberg --- include/linux/percpu.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include') diff --git a/include/linux/percpu.h b/include/linux/percpu.h index 8b97308e65df..9ca008f0c542 100644 --- a/include/linux/percpu.h +++ b/include/linux/percpu.h @@ -259,6 +259,9 @@ extern void __bad_size_call_parameter(void); * Special handling for cmpxchg_double. cmpxchg_double is passed two * percpu variables. The first has to be aligned to a double word * boundary and the second has to follow directly thereafter. + * We enforce this on all architectures even if they don't support + * a double cmpxchg instruction, since it's a cheap requirement, and it + * avoids breaking the requirement for architectures with the instruction. */ #define __pcpu_double_call_return_bool(stem, pcp1, pcp2, ...) \ ({ \ -- cgit v1.3-14-g43fede From fb04883371f2cb7867d24783e7d590036dc9b548 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Thu, 19 May 2011 15:44:27 +0200 Subject: netfilter: add more values to enum ip_conntrack_info MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Following error is raised (and other similar ones) : net/ipv4/netfilter/nf_nat_standalone.c: In function ‘nf_nat_fn’: net/ipv4/netfilter/nf_nat_standalone.c:119:2: warning: case value ‘4’ not in enumerated type ‘enum ip_conntrack_info’ gcc barfs on adding two enum values and getting a not enumerated result : case IP_CT_RELATED+IP_CT_IS_REPLY: Add missing enum values Signed-off-by: Eric Dumazet CC: David Miller Signed-off-by: Pablo Neira Ayuso --- include/linux/netfilter/nf_conntrack_common.h | 3 +++ net/ipv4/netfilter/ipt_CLUSTERIP.c | 6 +++--- net/ipv4/netfilter/ipt_MASQUERADE.c | 2 +- net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c | 2 +- net/ipv4/netfilter/nf_nat_core.c | 2 +- net/ipv4/netfilter/nf_nat_rule.c | 2 +- net/ipv4/netfilter/nf_nat_standalone.c | 4 ++-- net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c | 2 +- net/netfilter/nf_conntrack_core.c | 4 ++-- net/netfilter/nf_conntrack_ftp.c | 2 +- net/netfilter/nf_conntrack_h323_main.c | 10 ++++------ net/netfilter/nf_conntrack_irc.c | 3 +-- net/netfilter/nf_conntrack_pptp.c | 3 +-- net/netfilter/nf_conntrack_sane.c | 2 +- net/netfilter/nf_conntrack_sip.c | 2 +- net/netfilter/xt_socket.c | 4 ++-- 16 files changed, 26 insertions(+), 27 deletions(-) (limited to 'include') diff --git a/include/linux/netfilter/nf_conntrack_common.h b/include/linux/netfilter/nf_conntrack_common.h index 50cdc2559a5a..0d3dd66322ec 100644 --- a/include/linux/netfilter/nf_conntrack_common.h +++ b/include/linux/netfilter/nf_conntrack_common.h @@ -18,6 +18,9 @@ enum ip_conntrack_info { /* >= this indicates reply direction */ IP_CT_IS_REPLY, + IP_CT_ESTABLISHED_REPLY = IP_CT_ESTABLISHED + IP_CT_IS_REPLY, + IP_CT_RELATED_REPLY = IP_CT_RELATED + IP_CT_IS_REPLY, + IP_CT_NEW_REPLY = IP_CT_NEW + IP_CT_IS_REPLY, /* Number of distinct IP_CT types (no NEW in reply dirn). */ IP_CT_NUMBER = IP_CT_IS_REPLY * 2 - 1 }; diff --git a/net/ipv4/netfilter/ipt_CLUSTERIP.c b/net/ipv4/netfilter/ipt_CLUSTERIP.c index d609ac3cb9a4..5c9e97c79017 100644 --- a/net/ipv4/netfilter/ipt_CLUSTERIP.c +++ b/net/ipv4/netfilter/ipt_CLUSTERIP.c @@ -307,7 +307,7 @@ clusterip_tg(struct sk_buff *skb, const struct xt_action_param *par) * error messages (RELATED) and information requests (see below) */ if (ip_hdr(skb)->protocol == IPPROTO_ICMP && (ctinfo == IP_CT_RELATED || - ctinfo == IP_CT_RELATED + IP_CT_IS_REPLY)) + ctinfo == IP_CT_RELATED_REPLY)) return XT_CONTINUE; /* ip_conntrack_icmp guarantees us that we only have ICMP_ECHO, @@ -321,12 +321,12 @@ clusterip_tg(struct sk_buff *skb, const struct xt_action_param *par) ct->mark = hash; break; case IP_CT_RELATED: - case IP_CT_RELATED+IP_CT_IS_REPLY: + case IP_CT_RELATED_REPLY: /* FIXME: we don't handle expectations at the * moment. they can arrive on a different node than * the master connection (e.g. FTP passive mode) */ case IP_CT_ESTABLISHED: - case IP_CT_ESTABLISHED+IP_CT_IS_REPLY: + case IP_CT_ESTABLISHED_REPLY: break; default: break; diff --git a/net/ipv4/netfilter/ipt_MASQUERADE.c b/net/ipv4/netfilter/ipt_MASQUERADE.c index d2ed9dc74ebc..9931152a78b5 100644 --- a/net/ipv4/netfilter/ipt_MASQUERADE.c +++ b/net/ipv4/netfilter/ipt_MASQUERADE.c @@ -60,7 +60,7 @@ masquerade_tg(struct sk_buff *skb, const struct xt_action_param *par) nat = nfct_nat(ct); NF_CT_ASSERT(ct && (ctinfo == IP_CT_NEW || ctinfo == IP_CT_RELATED || - ctinfo == IP_CT_RELATED + IP_CT_IS_REPLY)); + ctinfo == IP_CT_RELATED_REPLY)); /* Source address is 0.0.0.0 - locally generated packet that is * probably not supposed to be masqueraded. diff --git a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c index 5a03c02af999..db10075dd88e 100644 --- a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c +++ b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c @@ -101,7 +101,7 @@ static unsigned int ipv4_confirm(unsigned int hooknum, /* This is where we call the helper: as the packet goes out. */ ct = nf_ct_get(skb, &ctinfo); - if (!ct || ctinfo == IP_CT_RELATED + IP_CT_IS_REPLY) + if (!ct || ctinfo == IP_CT_RELATED_REPLY) goto out; help = nfct_help(ct); diff --git a/net/ipv4/netfilter/nf_nat_core.c b/net/ipv4/netfilter/nf_nat_core.c index 9c71b2755ce3..3346de5d94d0 100644 --- a/net/ipv4/netfilter/nf_nat_core.c +++ b/net/ipv4/netfilter/nf_nat_core.c @@ -433,7 +433,7 @@ int nf_nat_icmp_reply_translation(struct nf_conn *ct, /* Must be RELATED */ NF_CT_ASSERT(skb->nfctinfo == IP_CT_RELATED || - skb->nfctinfo == IP_CT_RELATED+IP_CT_IS_REPLY); + skb->nfctinfo == IP_CT_RELATED_REPLY); /* Redirects on non-null nats must be dropped, else they'll start talking to each other without our translation, and be diff --git a/net/ipv4/netfilter/nf_nat_rule.c b/net/ipv4/netfilter/nf_nat_rule.c index 21c30426480b..733c9abc1cbd 100644 --- a/net/ipv4/netfilter/nf_nat_rule.c +++ b/net/ipv4/netfilter/nf_nat_rule.c @@ -53,7 +53,7 @@ ipt_snat_target(struct sk_buff *skb, const struct xt_action_param *par) /* Connection must be valid and new. */ NF_CT_ASSERT(ct && (ctinfo == IP_CT_NEW || ctinfo == IP_CT_RELATED || - ctinfo == IP_CT_RELATED + IP_CT_IS_REPLY)); + ctinfo == IP_CT_RELATED_REPLY)); NF_CT_ASSERT(par->out != NULL); return nf_nat_setup_info(ct, &mr->range[0], IP_NAT_MANIP_SRC); diff --git a/net/ipv4/netfilter/nf_nat_standalone.c b/net/ipv4/netfilter/nf_nat_standalone.c index 7317bdf1d457..483b76d042da 100644 --- a/net/ipv4/netfilter/nf_nat_standalone.c +++ b/net/ipv4/netfilter/nf_nat_standalone.c @@ -116,7 +116,7 @@ nf_nat_fn(unsigned int hooknum, switch (ctinfo) { case IP_CT_RELATED: - case IP_CT_RELATED+IP_CT_IS_REPLY: + case IP_CT_RELATED_REPLY: if (ip_hdr(skb)->protocol == IPPROTO_ICMP) { if (!nf_nat_icmp_reply_translation(ct, ctinfo, hooknum, skb)) @@ -144,7 +144,7 @@ nf_nat_fn(unsigned int hooknum, default: /* ESTABLISHED */ NF_CT_ASSERT(ctinfo == IP_CT_ESTABLISHED || - ctinfo == (IP_CT_ESTABLISHED+IP_CT_IS_REPLY)); + ctinfo == IP_CT_ESTABLISHED_REPLY); } return nf_nat_packet(ct, ctinfo, hooknum, skb); diff --git a/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c b/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c index c8af58b22562..4111050a9fc5 100644 --- a/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c +++ b/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c @@ -160,7 +160,7 @@ static unsigned int ipv6_confirm(unsigned int hooknum, /* This is where we call the helper: as the packet goes out. */ ct = nf_ct_get(skb, &ctinfo); - if (!ct || ctinfo == IP_CT_RELATED + IP_CT_IS_REPLY) + if (!ct || ctinfo == IP_CT_RELATED_REPLY) goto out; help = nfct_help(ct); diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c index 2e1c11f78419..0bd568929403 100644 --- a/net/netfilter/nf_conntrack_core.c +++ b/net/netfilter/nf_conntrack_core.c @@ -850,7 +850,7 @@ resolve_normal_ct(struct net *net, struct nf_conn *tmpl, /* It exists; we have (non-exclusive) reference. */ if (NF_CT_DIRECTION(h) == IP_CT_DIR_REPLY) { - *ctinfo = IP_CT_ESTABLISHED + IP_CT_IS_REPLY; + *ctinfo = IP_CT_ESTABLISHED_REPLY; /* Please set reply bit if this packet OK */ *set_reply = 1; } else { @@ -1143,7 +1143,7 @@ static void nf_conntrack_attach(struct sk_buff *nskb, struct sk_buff *skb) /* This ICMP is in reverse direction to the packet which caused it */ ct = nf_ct_get(skb, &ctinfo); if (CTINFO2DIR(ctinfo) == IP_CT_DIR_ORIGINAL) - ctinfo = IP_CT_RELATED + IP_CT_IS_REPLY; + ctinfo = IP_CT_RELATED_REPLY; else ctinfo = IP_CT_RELATED; diff --git a/net/netfilter/nf_conntrack_ftp.c b/net/netfilter/nf_conntrack_ftp.c index e17cb7c7dd8f..6f5801eac999 100644 --- a/net/netfilter/nf_conntrack_ftp.c +++ b/net/netfilter/nf_conntrack_ftp.c @@ -368,7 +368,7 @@ static int help(struct sk_buff *skb, /* Until there's been traffic both ways, don't look in packets. */ if (ctinfo != IP_CT_ESTABLISHED && - ctinfo != IP_CT_ESTABLISHED + IP_CT_IS_REPLY) { + ctinfo != IP_CT_ESTABLISHED_REPLY) { pr_debug("ftp: Conntrackinfo = %u\n", ctinfo); return NF_ACCEPT; } diff --git a/net/netfilter/nf_conntrack_h323_main.c b/net/netfilter/nf_conntrack_h323_main.c index 18b2ce5c8ced..f03c2d4539f6 100644 --- a/net/netfilter/nf_conntrack_h323_main.c +++ b/net/netfilter/nf_conntrack_h323_main.c @@ -571,10 +571,9 @@ static int h245_help(struct sk_buff *skb, unsigned int protoff, int ret; /* Until there's been traffic both ways, don't look in packets. */ - if (ctinfo != IP_CT_ESTABLISHED && - ctinfo != IP_CT_ESTABLISHED + IP_CT_IS_REPLY) { + if (ctinfo != IP_CT_ESTABLISHED && ctinfo != IP_CT_ESTABLISHED_REPLY) return NF_ACCEPT; - } + pr_debug("nf_ct_h245: skblen = %u\n", skb->len); spin_lock_bh(&nf_h323_lock); @@ -1125,10 +1124,9 @@ static int q931_help(struct sk_buff *skb, unsigned int protoff, int ret; /* Until there's been traffic both ways, don't look in packets. */ - if (ctinfo != IP_CT_ESTABLISHED && - ctinfo != IP_CT_ESTABLISHED + IP_CT_IS_REPLY) { + if (ctinfo != IP_CT_ESTABLISHED && ctinfo != IP_CT_ESTABLISHED_REPLY) return NF_ACCEPT; - } + pr_debug("nf_ct_q931: skblen = %u\n", skb->len); spin_lock_bh(&nf_h323_lock); diff --git a/net/netfilter/nf_conntrack_irc.c b/net/netfilter/nf_conntrack_irc.c index b394aa318776..4f9390b98697 100644 --- a/net/netfilter/nf_conntrack_irc.c +++ b/net/netfilter/nf_conntrack_irc.c @@ -125,8 +125,7 @@ static int help(struct sk_buff *skb, unsigned int protoff, return NF_ACCEPT; /* Until there's been traffic both ways, don't look in packets. */ - if (ctinfo != IP_CT_ESTABLISHED && - ctinfo != IP_CT_ESTABLISHED + IP_CT_IS_REPLY) + if (ctinfo != IP_CT_ESTABLISHED && ctinfo != IP_CT_ESTABLISHED_REPLY) return NF_ACCEPT; /* Not a full tcp header? */ diff --git a/net/netfilter/nf_conntrack_pptp.c b/net/netfilter/nf_conntrack_pptp.c index 088944824e13..2fd4565144de 100644 --- a/net/netfilter/nf_conntrack_pptp.c +++ b/net/netfilter/nf_conntrack_pptp.c @@ -519,8 +519,7 @@ conntrack_pptp_help(struct sk_buff *skb, unsigned int protoff, u_int16_t msg; /* don't do any tracking before tcp handshake complete */ - if (ctinfo != IP_CT_ESTABLISHED && - ctinfo != IP_CT_ESTABLISHED + IP_CT_IS_REPLY) + if (ctinfo != IP_CT_ESTABLISHED && ctinfo != IP_CT_ESTABLISHED_REPLY) return NF_ACCEPT; nexthdr_off = protoff; diff --git a/net/netfilter/nf_conntrack_sane.c b/net/netfilter/nf_conntrack_sane.c index d9e27734b2a2..8501823b3f9b 100644 --- a/net/netfilter/nf_conntrack_sane.c +++ b/net/netfilter/nf_conntrack_sane.c @@ -78,7 +78,7 @@ static int help(struct sk_buff *skb, ct_sane_info = &nfct_help(ct)->help.ct_sane_info; /* Until there's been traffic both ways, don't look in packets. */ if (ctinfo != IP_CT_ESTABLISHED && - ctinfo != IP_CT_ESTABLISHED+IP_CT_IS_REPLY) + ctinfo != IP_CT_ESTABLISHED_REPLY) return NF_ACCEPT; /* Not a full tcp header? */ diff --git a/net/netfilter/nf_conntrack_sip.c b/net/netfilter/nf_conntrack_sip.c index cb5a28581782..93faf6a3a637 100644 --- a/net/netfilter/nf_conntrack_sip.c +++ b/net/netfilter/nf_conntrack_sip.c @@ -1423,7 +1423,7 @@ static int sip_help_tcp(struct sk_buff *skb, unsigned int protoff, typeof(nf_nat_sip_seq_adjust_hook) nf_nat_sip_seq_adjust; if (ctinfo != IP_CT_ESTABLISHED && - ctinfo != IP_CT_ESTABLISHED + IP_CT_IS_REPLY) + ctinfo != IP_CT_ESTABLISHED_REPLY) return NF_ACCEPT; /* No Data ? */ diff --git a/net/netfilter/xt_socket.c b/net/netfilter/xt_socket.c index 9cc46356b577..fe39f7e913df 100644 --- a/net/netfilter/xt_socket.c +++ b/net/netfilter/xt_socket.c @@ -143,9 +143,9 @@ socket_match(const struct sk_buff *skb, struct xt_action_param *par, ct = nf_ct_get(skb, &ctinfo); if (ct && !nf_ct_is_untracked(ct) && ((iph->protocol != IPPROTO_ICMP && - ctinfo == IP_CT_IS_REPLY + IP_CT_ESTABLISHED) || + ctinfo == IP_CT_ESTABLISHED_REPLY) || (iph->protocol == IPPROTO_ICMP && - ctinfo == IP_CT_IS_REPLY + IP_CT_RELATED)) && + ctinfo == IP_CT_RELATED_REPLY)) && (ct->status & IPS_SRC_NAT_DONE)) { daddr = ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.u3.ip; -- cgit v1.3-14-g43fede From 5f98ecdbcef1920323d8777c0ba55dbd4335d3cf Mon Sep 17 00:00:00 2001 From: FUJITA Tomonori Date: Sun, 5 Jun 2011 11:47:29 +0900 Subject: swiotlb: Export swioltb_nr_tbl and utilize it as appropiate. By default the io_tlb_nslabs is set to zero, and gets set to whatever value is passed in via swiotlb_init_with_tbl function. The default value passed in is 64MB. However, if the user provides the 'swiotlb=' the default value is ignored and the value provided by the user is used... Except when the SWIOTLB is used under Xen - there the default value of 64MB is used and the Xen-SWIOTLB has no mechanism to get the 'io_tlb_nslabs' filled out by setup_io_tlb_npages functions. This patch provides a function for the Xen-SWIOTLB to call to see if the io_tlb_nslabs is set and if so use that value. Signed-off-by: FUJITA Tomonori Signed-off-by: Konrad Rzeszutek Wilk --- drivers/xen/swiotlb-xen.c | 12 +++++++++--- include/linux/swiotlb.h | 1 + lib/swiotlb.c | 5 +++++ 3 files changed, 15 insertions(+), 3 deletions(-) (limited to 'include') diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c index 54469c3eeacd..5ac3f4843f5c 100644 --- a/drivers/xen/swiotlb-xen.c +++ b/drivers/xen/swiotlb-xen.c @@ -147,9 +147,15 @@ void __init xen_swiotlb_init(int verbose) { unsigned long bytes; int rc; - - xen_io_tlb_nslabs = (64 * 1024 * 1024 >> IO_TLB_SHIFT); - xen_io_tlb_nslabs = ALIGN(xen_io_tlb_nslabs, IO_TLB_SEGSIZE); + unsigned long nr_tbl; + + nr_tbl = swioltb_nr_tbl(); + if (nr_tbl) + xen_io_tlb_nslabs = nr_tbl; + else { + xen_io_tlb_nslabs = (64 * 1024 * 1024 >> IO_TLB_SHIFT); + xen_io_tlb_nslabs = ALIGN(xen_io_tlb_nslabs, IO_TLB_SEGSIZE); + } bytes = xen_io_tlb_nslabs << IO_TLB_SHIFT; diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h index 8c0e349f4a6c..445702c60d04 100644 --- a/include/linux/swiotlb.h +++ b/include/linux/swiotlb.h @@ -24,6 +24,7 @@ extern int swiotlb_force; extern void swiotlb_init(int verbose); extern void swiotlb_init_with_tbl(char *tlb, unsigned long nslabs, int verbose); +extern unsigned long swioltb_nr_tbl(void); /* * Enumeration for sync targets diff --git a/lib/swiotlb.c b/lib/swiotlb.c index 93ca08b8a451..99093b396145 100644 --- a/lib/swiotlb.c +++ b/lib/swiotlb.c @@ -110,6 +110,11 @@ setup_io_tlb_npages(char *str) __setup("swiotlb=", setup_io_tlb_npages); /* make io_tlb_overflow tunable too? */ +unsigned long swioltb_nr_tbl(void) +{ + return io_tlb_nslabs; +} + /* Note that this doesn't work with highmem page */ static dma_addr_t swiotlb_virt_to_bus(struct device *hwdev, volatile void *address) -- cgit v1.3-14-g43fede From 3019de124b9f5b1526cb3668b74af14371e21795 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Mon, 6 Jun 2011 16:41:33 -0700 Subject: net: Rework netdev_drivername() to avoid warning. This interface uses a temporary buffer, but for no real reason. And now can generate warnings like: net/sched/sch_generic.c: In function dev_watchdog net/sched/sch_generic.c:254:10: warning: unused variable drivername Just return driver->name directly or "". Reported-by: Connor Hansen Signed-off-by: David S. Miller --- include/linux/netdevice.h | 2 +- net/core/dev.c | 16 +++++----------- net/sched/sch_generic.c | 3 +-- 3 files changed, 7 insertions(+), 14 deletions(-) (limited to 'include') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index ca333e79e10f..54b8b4d7b68f 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -2555,7 +2555,7 @@ extern void netdev_class_remove_file(struct class_attribute *class_attr); extern struct kobj_ns_type_operations net_ns_type_operations; -extern char *netdev_drivername(const struct net_device *dev, char *buffer, int len); +extern const char *netdev_drivername(const struct net_device *dev); extern void linkwatch_run_queue(void); diff --git a/net/core/dev.c b/net/core/dev.c index 939307891e71..1af6cb27f67a 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -6264,29 +6264,23 @@ err_name: /** * netdev_drivername - network driver for the device * @dev: network device - * @buffer: buffer for resulting name - * @len: size of buffer * * Determine network driver for device. */ -char *netdev_drivername(const struct net_device *dev, char *buffer, int len) +const char *netdev_drivername(const struct net_device *dev) { const struct device_driver *driver; const struct device *parent; - - if (len <= 0 || !buffer) - return buffer; - buffer[0] = 0; + const char *empty = ""; parent = dev->dev.parent; - if (!parent) - return buffer; + return empty; driver = parent->driver; if (driver && driver->name) - strlcpy(buffer, driver->name, len); - return buffer; + return driver->name; + return empty; } static int __netdev_printk(const char *level, const struct net_device *dev, diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c index b1721d71c27c..b4c680900d7a 100644 --- a/net/sched/sch_generic.c +++ b/net/sched/sch_generic.c @@ -251,9 +251,8 @@ static void dev_watchdog(unsigned long arg) } if (some_queue_timedout) { - char drivername[64]; WARN_ONCE(1, KERN_INFO "NETDEV WATCHDOG: %s (%s): transmit queue %u timed out\n", - dev->name, netdev_drivername(dev, drivername, 64), i); + dev->name, netdev_drivername(dev), i); dev->netdev_ops->ndo_tx_timeout(dev); } if (!mod_timer(&dev->watchdog_timer, -- cgit v1.3-14-g43fede From 13fcb7bd322164c67926ffe272846d4860196dc6 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 6 Jun 2011 22:42:06 -0700 Subject: af_packet: prevent information leak In 2.6.27, commit 393e52e33c6c2 (packet: deliver VLAN TCI to userspace) added a small information leak. Add padding field and make sure its zeroed before copy to user. Signed-off-by: Eric Dumazet CC: Patrick McHardy Signed-off-by: David S. Miller --- include/linux/if_packet.h | 2 ++ net/packet/af_packet.c | 2 ++ 2 files changed, 4 insertions(+) (limited to 'include') diff --git a/include/linux/if_packet.h b/include/linux/if_packet.h index 6d66ce1791a9..7b318630139f 100644 --- a/include/linux/if_packet.h +++ b/include/linux/if_packet.h @@ -62,6 +62,7 @@ struct tpacket_auxdata { __u16 tp_mac; __u16 tp_net; __u16 tp_vlan_tci; + __u16 tp_padding; }; /* Rx ring - header status */ @@ -101,6 +102,7 @@ struct tpacket2_hdr { __u32 tp_sec; __u32 tp_nsec; __u16 tp_vlan_tci; + __u16 tp_padding; }; #define TPACKET2_HDRLEN (TPACKET_ALIGN(sizeof(struct tpacket2_hdr)) + sizeof(struct sockaddr_ll)) diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c index ba248d93399a..c0c3cda19712 100644 --- a/net/packet/af_packet.c +++ b/net/packet/af_packet.c @@ -804,6 +804,7 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev, } else { h.h2->tp_vlan_tci = 0; } + h.h2->tp_padding = 0; hdrlen = sizeof(*h.h2); break; default: @@ -1736,6 +1737,7 @@ static int packet_recvmsg(struct kiocb *iocb, struct socket *sock, } else { aux.tp_vlan_tci = 0; } + aux.tp_padding = 0; put_cmsg(msg, SOL_PACKET, PACKET_AUXDATA, sizeof(aux), &aux); } -- cgit v1.3-14-g43fede From 85ab9ee946da58f26d8a1d7b71664748bdc0f3b0 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Tue, 7 Jun 2011 12:19:14 -0700 Subject: Staging: altera: move .h file to proper place Staging drivers should be self-contained, without files in the include/ directories. So move the altera.h file back to the driver directory for now, until it moves out of the staging tree. Cc: Igor M. Liplianin Cc: Mauro Carvalho Chehab Signed-off-by: Greg Kroah-Hartman --- drivers/staging/altera-stapl/altera-jtag.c | 2 +- drivers/staging/altera-stapl/altera.c | 2 +- drivers/staging/altera-stapl/altera.h | 49 ++++++++++++++++++++++++++++++ include/staging/altera.h | 49 ------------------------------ 4 files changed, 51 insertions(+), 51 deletions(-) create mode 100644 drivers/staging/altera-stapl/altera.h delete mode 100644 include/staging/altera.h (limited to 'include') diff --git a/drivers/staging/altera-stapl/altera-jtag.c b/drivers/staging/altera-stapl/altera-jtag.c index 876308858b82..8b1620b1b2d0 100644 --- a/drivers/staging/altera-stapl/altera-jtag.c +++ b/drivers/staging/altera-stapl/altera-jtag.c @@ -26,7 +26,7 @@ #include #include #include -#include +#include "altera.h" #include "altera-exprt.h" #include "altera-jtag.h" diff --git a/drivers/staging/altera-stapl/altera.c b/drivers/staging/altera-stapl/altera.c index 05aad351b120..9cd5e76880c0 100644 --- a/drivers/staging/altera-stapl/altera.c +++ b/drivers/staging/altera-stapl/altera.c @@ -28,7 +28,7 @@ #include #include #include -#include +#include "altera.h" #include "altera-exprt.h" #include "altera-jtag.h" diff --git a/drivers/staging/altera-stapl/altera.h b/drivers/staging/altera-stapl/altera.h new file mode 100644 index 000000000000..94c0c6181daf --- /dev/null +++ b/drivers/staging/altera-stapl/altera.h @@ -0,0 +1,49 @@ +/* + * altera.h + * + * altera FPGA driver + * + * Copyright (C) Altera Corporation 1998-2001 + * Copyright (C) 2010 NetUP Inc. + * Copyright (C) 2010 Igor M. Liplianin + * + * 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., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifndef _ALTERA_H_ +#define _ALTERA_H_ + +struct altera_config { + void *dev; + u8 *action; + int (*jtag_io) (void *dev, int tms, int tdi, int tdo); +}; + +#if defined(CONFIG_ALTERA_STAPL) || \ + (defined(CONFIG_ALTERA_STAPL_MODULE) && defined(MODULE)) + +extern int altera_init(struct altera_config *config, const struct firmware *fw); +#else + +static inline int altera_init(struct altera_config *config, + const struct firmware *fw) +{ + printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); + return 0; +} +#endif /* CONFIG_ALTERA_STAPL */ + +#endif /* _ALTERA_H_ */ diff --git a/include/staging/altera.h b/include/staging/altera.h deleted file mode 100644 index 94c0c6181daf..000000000000 --- a/include/staging/altera.h +++ /dev/null @@ -1,49 +0,0 @@ -/* - * altera.h - * - * altera FPGA driver - * - * Copyright (C) Altera Corporation 1998-2001 - * Copyright (C) 2010 NetUP Inc. - * Copyright (C) 2010 Igor M. Liplianin - * - * 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., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#ifndef _ALTERA_H_ -#define _ALTERA_H_ - -struct altera_config { - void *dev; - u8 *action; - int (*jtag_io) (void *dev, int tms, int tdi, int tdo); -}; - -#if defined(CONFIG_ALTERA_STAPL) || \ - (defined(CONFIG_ALTERA_STAPL_MODULE) && defined(MODULE)) - -extern int altera_init(struct altera_config *config, const struct firmware *fw); -#else - -static inline int altera_init(struct altera_config *config, - const struct firmware *fw) -{ - printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); - return 0; -} -#endif /* CONFIG_ALTERA_STAPL */ - -#endif /* _ALTERA_H_ */ -- cgit v1.3-14-g43fede From b4c8cc88c18213688268d1d53a51d97ce2f19a64 Mon Sep 17 00:00:00 2001 From: Yegor Yefremov Date: Thu, 9 Jun 2011 15:05:48 -0700 Subject: ethtool.h: fix typos Signed-off-by: Yegor Yefremov Signed-off-by: David S. Miller --- include/linux/ethtool.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include') diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h index c6a850ab2ec5..439b173c5882 100644 --- a/include/linux/ethtool.h +++ b/include/linux/ethtool.h @@ -268,7 +268,7 @@ struct ethtool_pauseparam { __u32 cmd; /* ETHTOOL_{G,S}PAUSEPARAM */ /* If the link is being auto-negotiated (via ethtool_cmd.autoneg - * being true) the user may set 'autonet' here non-zero to have the + * being true) the user may set 'autoneg' here non-zero to have the * pause parameters be auto-negotiated too. In such a case, the * {rx,tx}_pause values below determine what capabilities are * advertised. @@ -811,7 +811,7 @@ bool ethtool_invalid_flags(struct net_device *dev, u32 data, u32 supported); * @get_tx_csum: Deprecated as redundant. Report whether transmit checksums * are turned on or off. * @set_tx_csum: Deprecated in favour of generic netdev features. Turn - * transmit checksums on or off. Returns a egative error code or zero. + * transmit checksums on or off. Returns a negative error code or zero. * @get_sg: Deprecated as redundant. Report whether scatter-gather is * enabled. * @set_sg: Deprecated in favour of generic netdev features. Turn @@ -1087,7 +1087,7 @@ struct ethtool_ops { /* The following are all involved in forcing a particular link * mode for the device for setting things. When getting the * devices settings, these indicate the current mode and whether - * it was foced up into this mode or autonegotiated. + * it was forced up into this mode or autonegotiated. */ /* The forced speed, 10Mb, 100Mb, gigabit, 2.5Gb, 10GbE. */ -- cgit v1.3-14-g43fede From e5ea3f12d41d96edf4ad9374db2b1725e457acec Mon Sep 17 00:00:00 2001 From: Jamie Iles Date: Fri, 10 Jun 2011 13:44:49 +0100 Subject: gpio/basic_mmio: add missing include of spinlock_types.h include/linux/basic_mmio_gpio.h uses a spinlock_t without including any of the spinlock headers resulting in this compiler warning. include/linux/basic_mmio_gpio.h:51:2: error: expected specifier-qualifier-list before 'spinlock_t' Explicitly include linux/spinlock_types.h to fix it. Signed-off-by: Jamie Iles Signed-off-by: Grant Likely --- include/linux/basic_mmio_gpio.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/basic_mmio_gpio.h b/include/linux/basic_mmio_gpio.h index 1ae12710d732..98999cf107ce 100644 --- a/include/linux/basic_mmio_gpio.h +++ b/include/linux/basic_mmio_gpio.h @@ -16,6 +16,7 @@ #include #include #include +#include struct bgpio_pdata { int base; -- cgit v1.3-14-g43fede From 56a210526adb2854d5b7c398a40260720390ee05 Mon Sep 17 00:00:00 2001 From: David Howells Date: Sat, 11 Jun 2011 12:29:58 +0100 Subject: linux/seqlock.h should #include asm/processor.h for cpu_relax() It uses cpu_relax(), and so needs Without this patch, I see: CC arch/mn10300/kernel/asm-offsets.s In file included from include/linux/time.h:8, from include/linux/timex.h:56, from include/linux/sched.h:57, from arch/mn10300/kernel/asm-offsets.c:7: include/linux/seqlock.h: In function 'read_seqbegin': include/linux/seqlock.h:91: error: implicit declaration of function 'cpu_relax' whilst building asb2364_defconfig on MN10300. Signed-off-by: David Howells Signed-off-by: Linus Torvalds --- include/linux/seqlock.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/seqlock.h b/include/linux/seqlock.h index e9811892844f..c6db9fb33c44 100644 --- a/include/linux/seqlock.h +++ b/include/linux/seqlock.h @@ -28,6 +28,7 @@ #include #include +#include typedef struct { unsigned sequence; -- cgit v1.3-14-g43fede From 0b5c9db1b11d3175bb42b80663a9f072f801edf5 Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Fri, 10 Jun 2011 06:56:58 +0000 Subject: vlan: Fix the ingress VLAN_FLAG_REORDER_HDR check Testing of VLAN_FLAG_REORDER_HDR does not belong in vlan_untag but rather in vlan_do_receive. Otherwise the vlan header will not be properly put on the packet in the case of vlan header accelleration. As we remove the check from vlan_check_reorder_header rename it vlan_reorder_header to keep the naming clean. Fix up the skb->pkt_type early so we don't look at the packet after adding the vlan tag, which guarantees we don't goof and look at the wrong field. Use a simple if statement instead of a complicated switch statement to decided that we need to increment rx_stats for a multicast packet. Hopefully at somepoint we will just declare the case where VLAN_FLAG_REORDER_HDR is cleared as unsupported and remove the code. Until then this keeps it working correctly. Signed-off-by: Eric W. Biederman Signed-off-by: Jiri Pirko Acked-by: Changli Gao Signed-off-by: David S. Miller --- include/linux/if_vlan.h | 25 ++++++++++++++++++--- include/linux/skbuff.h | 5 +++++ net/8021q/vlan_core.c | 60 +++++++++++++++++++++++++++---------------------- net/core/dev.c | 2 +- 4 files changed, 61 insertions(+), 31 deletions(-) (limited to 'include') diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h index dc01681fbb42..affa27380b72 100644 --- a/include/linux/if_vlan.h +++ b/include/linux/if_vlan.h @@ -225,7 +225,7 @@ static inline int vlan_hwaccel_receive_skb(struct sk_buff *skb, } /** - * __vlan_put_tag - regular VLAN tag inserting + * vlan_insert_tag - regular VLAN tag inserting * @skb: skbuff to tag * @vlan_tci: VLAN TCI to insert * @@ -234,8 +234,10 @@ static inline int vlan_hwaccel_receive_skb(struct sk_buff *skb, * * Following the skb_unshare() example, in case of error, the calling function * doesn't have to worry about freeing the original skb. + * + * Does not change skb->protocol so this function can be used during receive. */ -static inline struct sk_buff *__vlan_put_tag(struct sk_buff *skb, u16 vlan_tci) +static inline struct sk_buff *vlan_insert_tag(struct sk_buff *skb, u16 vlan_tci) { struct vlan_ethhdr *veth; @@ -255,8 +257,25 @@ static inline struct sk_buff *__vlan_put_tag(struct sk_buff *skb, u16 vlan_tci) /* now, the TCI */ veth->h_vlan_TCI = htons(vlan_tci); - skb->protocol = htons(ETH_P_8021Q); + return skb; +} +/** + * __vlan_put_tag - regular VLAN tag inserting + * @skb: skbuff to tag + * @vlan_tci: VLAN TCI to insert + * + * Inserts the VLAN tag into @skb as part of the payload + * Returns a VLAN tagged skb. If a new skb is created, @skb is freed. + * + * Following the skb_unshare() example, in case of error, the calling function + * doesn't have to worry about freeing the original skb. + */ +static inline struct sk_buff *__vlan_put_tag(struct sk_buff *skb, u16 vlan_tci) +{ + skb = vlan_insert_tag(skb, vlan_tci); + if (skb) + skb->protocol = htons(ETH_P_8021Q); return skb; } diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index e8b78ce14474..c0a4f3ab0cc0 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -1256,6 +1256,11 @@ static inline void skb_reserve(struct sk_buff *skb, int len) skb->tail += len; } +static inline void skb_reset_mac_len(struct sk_buff *skb) +{ + skb->mac_len = skb->network_header - skb->mac_header; +} + #ifdef NET_SKBUFF_DATA_USES_OFFSET static inline unsigned char *skb_transport_header(const struct sk_buff *skb) { diff --git a/net/8021q/vlan_core.c b/net/8021q/vlan_core.c index 41495dc2a4c9..fcc684678af6 100644 --- a/net/8021q/vlan_core.c +++ b/net/8021q/vlan_core.c @@ -23,6 +23,31 @@ bool vlan_do_receive(struct sk_buff **skbp) return false; skb->dev = vlan_dev; + if (skb->pkt_type == PACKET_OTHERHOST) { + /* Our lower layer thinks this is not local, let's make sure. + * This allows the VLAN to have a different MAC than the + * underlying device, and still route correctly. */ + if (!compare_ether_addr(eth_hdr(skb)->h_dest, + vlan_dev->dev_addr)) + skb->pkt_type = PACKET_HOST; + } + + if (!(vlan_dev_info(vlan_dev)->flags & VLAN_FLAG_REORDER_HDR)) { + unsigned int offset = skb->data - skb_mac_header(skb); + + /* + * vlan_insert_tag expect skb->data pointing to mac header. + * So change skb->data before calling it and change back to + * original position later + */ + skb_push(skb, offset); + skb = *skbp = vlan_insert_tag(skb, skb->vlan_tci); + if (!skb) + return false; + skb_pull(skb, offset + VLAN_HLEN); + skb_reset_mac_len(skb); + } + skb->priority = vlan_get_ingress_priority(vlan_dev, skb->vlan_tci); skb->vlan_tci = 0; @@ -31,22 +56,8 @@ bool vlan_do_receive(struct sk_buff **skbp) u64_stats_update_begin(&rx_stats->syncp); rx_stats->rx_packets++; rx_stats->rx_bytes += skb->len; - - switch (skb->pkt_type) { - case PACKET_BROADCAST: - break; - case PACKET_MULTICAST: + if (skb->pkt_type == PACKET_MULTICAST) rx_stats->rx_multicast++; - break; - case PACKET_OTHERHOST: - /* Our lower layer thinks this is not local, let's make sure. - * This allows the VLAN to have a different MAC than the - * underlying device, and still route correctly. */ - if (!compare_ether_addr(eth_hdr(skb)->h_dest, - vlan_dev->dev_addr)) - skb->pkt_type = PACKET_HOST; - break; - } u64_stats_update_end(&rx_stats->syncp); return true; @@ -89,18 +100,13 @@ gro_result_t vlan_gro_frags(struct napi_struct *napi, struct vlan_group *grp, } EXPORT_SYMBOL(vlan_gro_frags); -static struct sk_buff *vlan_check_reorder_header(struct sk_buff *skb) +static struct sk_buff *vlan_reorder_header(struct sk_buff *skb) { - if (vlan_dev_info(skb->dev)->flags & VLAN_FLAG_REORDER_HDR) { - if (skb_cow(skb, skb_headroom(skb)) < 0) - skb = NULL; - if (skb) { - /* Lifted from Gleb's VLAN code... */ - memmove(skb->data - ETH_HLEN, - skb->data - VLAN_ETH_HLEN, 12); - skb->mac_header += VLAN_HLEN; - } - } + if (skb_cow(skb, skb_headroom(skb)) < 0) + return NULL; + memmove(skb->data - ETH_HLEN, skb->data - VLAN_ETH_HLEN, 2 * ETH_ALEN); + skb->mac_header += VLAN_HLEN; + skb_reset_mac_len(skb); return skb; } @@ -161,7 +167,7 @@ struct sk_buff *vlan_untag(struct sk_buff *skb) skb_pull_rcsum(skb, VLAN_HLEN); vlan_set_encap_proto(skb, vhdr); - skb = vlan_check_reorder_header(skb); + skb = vlan_reorder_header(skb); if (unlikely(!skb)) goto err_free; diff --git a/net/core/dev.c b/net/core/dev.c index a54c9f87ddbb..9c58c1ec41a9 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -3114,7 +3114,7 @@ static int __netif_receive_skb(struct sk_buff *skb) skb_reset_network_header(skb); skb_reset_transport_header(skb); - skb->mac_len = skb->network_header - skb->mac_header; + skb_reset_mac_len(skb); pt_prev = NULL; -- cgit v1.3-14-g43fede