From 9ffc93f203c18a70623f21950f1dd473c9ec48cd Mon Sep 17 00:00:00 2001 From: David Howells Date: Wed, 28 Mar 2012 18:30:03 +0100 Subject: Remove all #inclusions of asm/system.h Remove all #inclusions of asm/system.h preparatory to splitting and killing it. Performed with the following command: perl -p -i -e 's!^#\s*include\s*.*\n!!' `grep -Irl '^#\s*include\s*' *` Signed-off-by: David Howells --- net/core/datagram.c | 1 - net/core/dev.c | 1 - net/core/filter.c | 1 - net/core/gen_estimator.c | 1 - net/core/rtnetlink.c | 1 - net/core/scm.c | 1 - net/core/skbuff.c | 1 - net/core/sock.c | 1 - net/core/utils.c | 1 - 9 files changed, 9 deletions(-) (limited to 'net/core') diff --git a/net/core/datagram.c b/net/core/datagram.c index d3cf12f..e4fbfd6 100644 --- a/net/core/datagram.c +++ b/net/core/datagram.c @@ -37,7 +37,6 @@ #include #include #include -#include #include #include #include diff --git a/net/core/dev.c b/net/core/dev.c index 0f3eb7d..926411b 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -73,7 +73,6 @@ */ #include -#include #include #include #include diff --git a/net/core/filter.c b/net/core/filter.c index 5dea452..cf4989a 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -33,7 +33,6 @@ #include #include #include -#include #include #include #include diff --git a/net/core/gen_estimator.c b/net/core/gen_estimator.c index 43b03dd..d9d198a 100644 --- a/net/core/gen_estimator.c +++ b/net/core/gen_estimator.c @@ -14,7 +14,6 @@ */ #include -#include #include #include #include diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index 1a63c6e..90430b7 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -38,7 +38,6 @@ #include #include -#include #include #include diff --git a/net/core/scm.c b/net/core/scm.c index ff52ad0..611c5ef 100644 --- a/net/core/scm.c +++ b/net/core/scm.c @@ -28,7 +28,6 @@ #include #include -#include #include #include diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 6eb656a..9e602a3 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -66,7 +66,6 @@ #include #include -#include #include #include "kmap_skb.h" diff --git a/net/core/sock.c b/net/core/sock.c index 9be6d0d..b2e14c0 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -115,7 +115,6 @@ #include #include -#include #include #include diff --git a/net/core/utils.c b/net/core/utils.c index 386e263f..dc3c3fa 100644 --- a/net/core/utils.c +++ b/net/core/utils.c @@ -30,7 +30,6 @@ #include #include -#include #include int net_msg_warn __read_mostly = 1; -- cgit v1.1 From 2def16ae6b0c77571200f18ba4be049b03d75579 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 2 Apr 2012 22:33:02 +0000 Subject: net: fix /proc/net/dev regression Commit f04565ddf52 (dev: use name hash for dev_seq_ops) added a second regression, as some devices are missing from /proc/net/dev if many devices are defined. When seq_file buffer is filled, the last ->next/show() method is canceled (pos value is reverted to value prior ->next() call) Problem is after above commit, we dont restart the lookup at right position in ->start() method. Fix this by removing the internal 'pos' pointer added in commit, since we need to use the 'loff_t *pos' provided by seq_file layer. This also reverts commit 5cac98dd0 (net: Fix corruption in /proc/*/net/dev_mcast), since its not needed anymore. Reported-by: Ben Greear Signed-off-by: Eric Dumazet Cc: Mihai Maruseac Tested-by: Ben Greear Signed-off-by: David S. Miller --- net/core/dev.c | 58 +++++++++++------------------------------------ net/core/dev_addr_lists.c | 3 ++- 2 files changed, 15 insertions(+), 46 deletions(-) (limited to 'net/core') diff --git a/net/core/dev.c b/net/core/dev.c index 6c7dc9d..c25d453 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -4028,54 +4028,41 @@ static int dev_ifconf(struct net *net, char __user *arg) #ifdef CONFIG_PROC_FS -#define BUCKET_SPACE (32 - NETDEV_HASHBITS) - -struct dev_iter_state { - struct seq_net_private p; - unsigned int pos; /* bucket << BUCKET_SPACE + offset */ -}; +#define BUCKET_SPACE (32 - NETDEV_HASHBITS - 1) #define get_bucket(x) ((x) >> BUCKET_SPACE) #define get_offset(x) ((x) & ((1 << BUCKET_SPACE) - 1)) #define set_bucket_offset(b, o) ((b) << BUCKET_SPACE | (o)) -static inline struct net_device *dev_from_same_bucket(struct seq_file *seq) +static inline struct net_device *dev_from_same_bucket(struct seq_file *seq, loff_t *pos) { - struct dev_iter_state *state = seq->private; struct net *net = seq_file_net(seq); struct net_device *dev; struct hlist_node *p; struct hlist_head *h; - unsigned int count, bucket, offset; + unsigned int count = 0, offset = get_offset(*pos); - bucket = get_bucket(state->pos); - offset = get_offset(state->pos); - h = &net->dev_name_head[bucket]; - count = 0; + h = &net->dev_name_head[get_bucket(*pos)]; hlist_for_each_entry_rcu(dev, p, h, name_hlist) { - if (count++ == offset) { - state->pos = set_bucket_offset(bucket, count); + if (++count == offset) return dev; - } } return NULL; } -static inline struct net_device *dev_from_new_bucket(struct seq_file *seq) +static inline struct net_device *dev_from_bucket(struct seq_file *seq, loff_t *pos) { - struct dev_iter_state *state = seq->private; struct net_device *dev; unsigned int bucket; - bucket = get_bucket(state->pos); do { - dev = dev_from_same_bucket(seq); + dev = dev_from_same_bucket(seq, pos); if (dev) return dev; - bucket++; - state->pos = set_bucket_offset(bucket, 0); + bucket = get_bucket(*pos) + 1; + *pos = set_bucket_offset(bucket, 1); } while (bucket < NETDEV_HASHENTRIES); return NULL; @@ -4088,33 +4075,20 @@ static inline struct net_device *dev_from_new_bucket(struct seq_file *seq) void *dev_seq_start(struct seq_file *seq, loff_t *pos) __acquires(RCU) { - struct dev_iter_state *state = seq->private; - rcu_read_lock(); if (!*pos) return SEQ_START_TOKEN; - /* check for end of the hash */ - if (state->pos == 0 && *pos > 1) + if (get_bucket(*pos) >= NETDEV_HASHENTRIES) return NULL; - return dev_from_new_bucket(seq); + return dev_from_bucket(seq, pos); } void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos) { - struct net_device *dev; - ++*pos; - - if (v == SEQ_START_TOKEN) - return dev_from_new_bucket(seq); - - dev = dev_from_same_bucket(seq); - if (dev) - return dev; - - return dev_from_new_bucket(seq); + return dev_from_bucket(seq, pos); } void dev_seq_stop(struct seq_file *seq, void *v) @@ -4213,13 +4187,7 @@ static const struct seq_operations dev_seq_ops = { static int dev_seq_open(struct inode *inode, struct file *file) { return seq_open_net(inode, file, &dev_seq_ops, - sizeof(struct dev_iter_state)); -} - -int dev_seq_open_ops(struct inode *inode, struct file *file, - const struct seq_operations *ops) -{ - return seq_open_net(inode, file, ops, sizeof(struct dev_iter_state)); + sizeof(struct seq_net_private)); } static const struct file_operations dev_seq_fops = { diff --git a/net/core/dev_addr_lists.c b/net/core/dev_addr_lists.c index 29c07fe..626698f 100644 --- a/net/core/dev_addr_lists.c +++ b/net/core/dev_addr_lists.c @@ -696,7 +696,8 @@ static const struct seq_operations dev_mc_seq_ops = { static int dev_mc_seq_open(struct inode *inode, struct file *file) { - return dev_seq_open_ops(inode, file, &dev_mc_seq_ops); + return seq_open_net(inode, file, &dev_mc_seq_ops, + sizeof(struct seq_net_private)); } static const struct file_operations dev_mc_seq_fops = { -- cgit v1.1 From f03fb3f455c6c3a3dfcef6c7f2dcab104c813f4b Mon Sep 17 00:00:00 2001 From: Jan Seiffert Date: Fri, 30 Mar 2012 05:08:19 +0000 Subject: bpf jit: Make the filter.c::__load_pointer helper non-static for the jits The function is renamed to make it a little more clear what it does. It is not added to any .h because it is not for general consumption, only for bpf internal use (and so by the jits). Signed-of-by: Jan Seiffert Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- net/core/filter.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'net/core') diff --git a/net/core/filter.c b/net/core/filter.c index cf4989a..6f755cc 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -39,8 +39,11 @@ #include #include -/* No hurry in this branch */ -static void *__load_pointer(const struct sk_buff *skb, int k, unsigned int size) +/* No hurry in this branch + * + * Exported for the bpf jit load helper. + */ +void *bpf_internal_load_pointer_neg_helper(const struct sk_buff *skb, int k, unsigned int size) { u8 *ptr = NULL; @@ -59,7 +62,7 @@ static inline void *load_pointer(const struct sk_buff *skb, int k, { if (k >= 0) return skb_header_pointer(skb, k, size, buffer); - return __load_pointer(skb, k, size); + return bpf_internal_load_pointer_neg_helper(skb, k, size); } /** -- cgit v1.1 From 110c43304db6f06490961529536c362d9ac5732f Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Fri, 6 Apr 2012 10:49:10 +0200 Subject: net: fix a race in sock_queue_err_skb() As soon as an skb is queued into socket error queue, another thread can consume it, so we are not allowed to reference skb anymore, or risk use after free. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- net/core/skbuff.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'net/core') diff --git a/net/core/skbuff.c b/net/core/skbuff.c index f223cdc..baf8d28 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -3161,6 +3161,8 @@ static void sock_rmem_free(struct sk_buff *skb) */ int sock_queue_err_skb(struct sock *sk, struct sk_buff *skb) { + int len = skb->len; + if (atomic_read(&sk->sk_rmem_alloc) + skb->truesize >= (unsigned)sk->sk_rcvbuf) return -ENOMEM; @@ -3175,7 +3177,7 @@ int sock_queue_err_skb(struct sock *sk, struct sk_buff *skb) skb_queue_tail(&sk->sk_error_queue, skb); if (!sock_flag(sk, SOCK_DEAD)) - sk->sk_data_ready(sk, skb->len); + sk->sk_data_ready(sk, len); return 0; } EXPORT_SYMBOL(sock_queue_err_skb); -- cgit v1.1