diff options
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/kmap_skb.h | 19 | ||||
| -rw-r--r-- | net/core/skbuff.c | 3 | ||||
| -rw-r--r-- | net/core/sock.c | 1 |
3 files changed, 22 insertions, 1 deletions
diff --git a/net/core/kmap_skb.h b/net/core/kmap_skb.h new file mode 100644 index 00000000000..283c2b993fb --- /dev/null +++ b/net/core/kmap_skb.h @@ -0,0 +1,19 @@ +#include <linux/highmem.h> + +static inline void *kmap_skb_frag(const skb_frag_t *frag) +{ +#ifdef CONFIG_HIGHMEM + BUG_ON(in_irq()); + + local_bh_disable(); +#endif + return kmap_atomic(frag->page, KM_SKB_DATA_SOFTIRQ); +} + +static inline void kunmap_skb_frag(void *vaddr) +{ + kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ); +#ifdef CONFIG_HIGHMEM + local_bh_enable(); +#endif +} diff --git a/net/core/skbuff.c b/net/core/skbuff.c index a90bc439488..8e1c385e5ba 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -56,7 +56,6 @@ #include <linux/cache.h> #include <linux/rtnetlink.h> #include <linux/init.h> -#include <linux/highmem.h> #include <net/protocol.h> #include <net/dst.h> @@ -67,6 +66,8 @@ #include <asm/uaccess.h> #include <asm/system.h> +#include "kmap_skb.h" + static kmem_cache_t *skbuff_head_cache __read_mostly; static kmem_cache_t *skbuff_fclone_cache __read_mostly; diff --git a/net/core/sock.c b/net/core/sock.c index ab8fafadb4b..419c7d3289c 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -111,6 +111,7 @@ #include <linux/poll.h> #include <linux/tcp.h> #include <linux/init.h> +#include <linux/highmem.h> #include <asm/uaccess.h> #include <asm/system.h> |