diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/filter.h | 7 | ||||
| -rw-r--r-- | include/linux/notifier.h | 3 | ||||
| -rw-r--r-- | include/linux/skbuff.h | 2 | ||||
| -rw-r--r-- | include/net/caif/caif_layer.h | 36 |
4 files changed, 28 insertions, 20 deletions
diff --git a/include/linux/filter.h b/include/linux/filter.h index 4609b85e559..9ee3f9fb0b4 100644 --- a/include/linux/filter.h +++ b/include/linux/filter.h @@ -131,6 +131,10 @@ struct sock_fprog { /* Required for SO_ATTACH_FILTER. */ #define SKF_LL_OFF (-0x200000) #ifdef __KERNEL__ + +struct sk_buff; +struct sock; + struct sk_filter { atomic_t refcnt; @@ -146,9 +150,6 @@ static inline unsigned int sk_filter_len(const struct sk_filter *fp) return fp->len * sizeof(struct sock_filter) + sizeof(*fp); } -struct sk_buff; -struct sock; - extern int sk_filter(struct sock *sk, struct sk_buff *skb); extern unsigned int sk_run_filter(const struct sk_buff *skb, const struct sock_filter *filter); diff --git a/include/linux/notifier.h b/include/linux/notifier.h index 621dfa16acc..c0688b0168b 100644 --- a/include/linux/notifier.h +++ b/include/linux/notifier.h @@ -209,8 +209,9 @@ static inline int notifier_to_errno(int ret) #define NETDEV_POST_TYPE_CHANGE 0x000F #define NETDEV_POST_INIT 0x0010 #define NETDEV_UNREGISTER_BATCH 0x0011 -#define NETDEV_BONDING_DESLAVE 0x0012 +#define NETDEV_RELEASE 0x0012 #define NETDEV_NOTIFY_PEERS 0x0013 +#define NETDEV_JOIN 0x0014 #define SYS_DOWN 0x0001 /* Notify of system down */ #define SYS_RESTART SYS_DOWN diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 16c9c091555..e8b78ce1447 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -1442,7 +1442,7 @@ extern int ___pskb_trim(struct sk_buff *skb, unsigned int len); static inline void __skb_trim(struct sk_buff *skb, unsigned int len) { - if (unlikely(skb->data_len)) { + if (unlikely(skb_is_nonlinear(skb))) { WARN_ON(1); return; } diff --git a/include/net/caif/caif_layer.h b/include/net/caif/caif_layer.h index c8b07a904e7..35bc7883cf9 100644 --- a/include/net/caif/caif_layer.h +++ b/include/net/caif/caif_layer.h @@ -15,7 +15,6 @@ struct cfpktq; struct caif_payload_info; struct caif_packet_funcs; - #define CAIF_LAYER_NAME_SZ 16 /** @@ -33,7 +32,6 @@ do { \ } \ } while (0) - /** * enum caif_ctrlcmd - CAIF Stack Control Signaling sent in layer.ctrlcmd(). * @@ -141,7 +139,7 @@ enum caif_direction { * - All layers must use this structure. If embedding it, then place this * structure first in the layer specific structure. * - * - Each layer should not depend on any others layer private data. + * - Each layer should not depend on any others layer's private data. * * - In order to send data upwards do * layer->up->receive(layer->up, packet); @@ -155,16 +153,23 @@ struct cflayer { struct list_head node; /* - * receive() - Receive Function. + * receive() - Receive Function (non-blocking). * Contract: Each layer must implement a receive function passing the * CAIF packets upwards in the stack. * Packet handling rules: - * - The CAIF packet (cfpkt) cannot be accessed after - * passing it to the next layer using up->receive(). + * - The CAIF packet (cfpkt) ownership is passed to the + * called receive function. This means that the the + * packet cannot be accessed after passing it to the + * above layer using up->receive(). + * * - If parsing of the packet fails, the packet must be - * destroyed and -1 returned from the function. + * destroyed and negative error code returned + * from the function. + * EXCEPTION: If the framing layer (cffrml) returns + * -EILSEQ, the packet is not freed. + * * - If parsing succeeds (and above layers return OK) then - * the function must return a value > 0. + * the function must return a value >= 0. * * Returns result < 0 indicates an error, 0 or positive value * indicates success. @@ -176,7 +181,7 @@ struct cflayer { int (*receive)(struct cflayer *layr, struct cfpkt *cfpkt); /* - * transmit() - Transmit Function. + * transmit() - Transmit Function (non-blocking). * Contract: Each layer must implement a transmit function passing the * CAIF packet downwards in the stack. * Packet handling rules: @@ -185,15 +190,16 @@ struct cflayer { * cannot be accessed after passing it to the below * layer using dn->transmit(). * - * - If transmit fails, however, the ownership is returned - * to thecaller. The caller of "dn->transmit()" must - * destroy or resend packet. + * - Upon error the packet ownership is still passed on, + * so the packet shall be freed where error is detected. + * Callers of the transmit function shall not free packets, + * but errors shall be returned. * * - Return value less than zero means error, zero or * greater than zero means OK. * - * result < 0 indicates an error, 0 or positive value - * indicate success. + * Returns result < 0 indicates an error, 0 or positive value + * indicates success. * * @layr: Pointer to the current layer the receive function * isimplemented for (this pointer). @@ -202,7 +208,7 @@ struct cflayer { int (*transmit) (struct cflayer *layr, struct cfpkt *cfpkt); /* - * cttrlcmd() - Control Function upwards in CAIF Stack. + * cttrlcmd() - Control Function upwards in CAIF Stack (non-blocking). * Used for signaling responses (CAIF_CTRLCMD_*_RSP) * and asynchronous events from the modem (CAIF_CTRLCMD_*_IND) * |