snd_ac97_get_short_name – retrieve codec name Synopsis const char *snd_ac97_get_short_name(struct snd_ac97 *ac97); Arguments ac97 the codec instance Return The short identifying name of the codec. Copyright
snd_ac97_bus – create an AC97 bus component Synopsis int snd_ac97_bus(struct snd_card *card, int num, struct snd_ac97_bus_ops *ops, void *private_data, struct snd_ac97_bus **rbus); Arguments card the card instance num the bus number ops the bus callbacks table private_data private data pointer for the new instance rbus the pointer to store the new AC97 bus instance. Description…
snd_BUG_ON – debugging check macro Synopsis snd_BUG_ON(cond); Arguments cond condition to evaluate Description Has the same behavior as WARN_ON when CONFIG_SND_DEBUG is set, otherwise just evaluates the conditional and returns the value. Copyright
snd_BUG – give a BUG warning message and stack trace Synopsis snd_BUG(void); Arguments None Description Calls WARN if CONFIG_SND_DEBUG is set. Ignored when CONFIG_SND_DEBUG is not set. Copyright
sleeping_thread_to_gdb_regs – Convert ptrace regs to GDB regs Synopsis void sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *p); Arguments gdb_regs A pointer to hold the registers in the order GDB wants. p The struct task_struct of the desired process. Description Convert the register values of the sleeping process in p to the format that GDB expects. This…
skwq_has_sleeper – check if there are any waiting processes Synopsis bool skwq_has_sleeper(struct socket_wq * wq); Arguments wq struct socket_wq Description Returns true if socket_wq has waiting processes The purpose of the skwq_has_sleeper and sock_poll_wait is to wrap the memory barrier call. They were added due to the race found within the tcp code. Consider following tcp code…
skip_spaces – Removes leading whitespace from str. Synopsis char *skip_spaces(const char *str); Arguments str The string to be stripped. Description Returns a pointer to the first non-whitespace character in str. Copyright
skcipher_request_set_tfm – update cipher handle reference in request Synopsis void skcipher_request_set_tfm(struct skcipher_request *req, struct crypto_skcipher *tfm); Arguments req request handle to be modified tfm cipher handle that shall be added to the request handle Description Allow the caller to replace the existing skcipher handle in the request data structure with a different one. Authors Stephan…
skcipher_request_set_crypt – set data buffers Synopsis void skcipher_request_set_crypt(struct skcipher_request *req, struct scatterlist *src, struct scatterlist *dst, unsigned int cryptlen, void *iv); Arguments req request handle src source scatter / gather list dst destination scatter / gather list cryptlen number of bytes to process from src iv IV for the cipher operation which must comply with…
skcipher_request_set_callback – set asynchronous callback function Synopsis void skcipher_request_set_callback(struct skcipher_request *req, u32 flags, crypto_completion_t compl, void *data); Arguments req request handle flags specify zero or an ORing of the flags CRYPTO_TFM_REQ_MAY_BACKLOG the request queue may back log and increase the wait queue beyond the initial maximum size; CRYPTO_TFM_REQ_MAY_SLEEP the request processing may sleep compl callback…
skcipher_request_free – zeroize and free request data structure Synopsis void skcipher_request_free(struct skcipher_request *req); Arguments req request data structure cipher handle to be freed Authors Stephan Mueller <smueller [at] chronox.de> Author. Marek Vasut <marek [at] denx.de> Author. Copyright
skcipher_request_alloc – allocate request data structure Synopsis struct skcipher_request *skcipher_request_alloc(struct crypto_skcipher *tfm, gfp_t gfp); Arguments tfm cipher handle to be registered with the request gfp memory allocation flag that is handed to kmalloc by the API call. Description Allocate the request data structure that must be used with the skcipher encrypt and decrypt API calls….
skb_zerocopy – Zero copy skb to skb Synopsis int skb_zerocopy(struct sk_buff *to, struct sk_buff *from, int len, int hlen); Arguments to destination buffer from source buffer len number of bytes to copy from source buffer hlen size of linear headroom in destination buffer Description Copies up to `len` bytes from `from` to `to` by creating…
skb_unshare – make a copy of a shared buffer Synopsis struct sk_buff *skb_unshare(struct sk_buff *skb, gfp_t pri); Arguments skb buffer to check pri priority for memory allocation Description If the socket buffer is a clone then this function creates a new copy of the data, drops a reference count on the old copy and returns…
skb_unlink – remove a buffer from a list Synopsis void skb_unlink(struct sk_buff *skb, struct sk_buff_head *list); Arguments skb buffer to remove list list to use Description Remove a packet from a list. The list locks are taken and this function is atomic with respect to other list locked calls You must know what list the…
skb_tx_timestamp – Driver hook for transmit timestamping Synopsis void skb_tx_timestamp(struct sk_buff *skb); Arguments skb A socket buffer. Description Ethernet MAC Drivers should call this function in their hard_xmit function immediately before giving the sk_buff to the MAC hardware. Specifically, one should make absolutely sure that this function is called before TX completion of this packet…
skb_tx_error – report an sk_buff xmit error Synopsis void skb_tx_error(struct sk_buff *skb); Arguments skb buffer that triggered an error Description Report xmit error if a device callback is tracking this skb. skb must be freed afterwards. Copyright
skb_try_coalesce – try to merge skb to prior one Synopsis bool skb_try_coalesce(struct sk_buff * to, struct sk_buff * from, bool * fragstolen, int * delta_truesize); Arguments to prior buffer from buffer to add fragstolen pointer to boolean delta_truesize how much more was allocated than was requested Copyright
skb_trim – remove end from a buffer Synopsis void skb_trim(struct sk_buff *skb, unsigned int len); Arguments skb buffer to alter len new length Description Cut the length of a buffer down by removing data from the tail. If the buffer is already under the length specified it is not modified. The skb must be linear….
skb_tailroom_reserve – adjust reserved_tailroom Synopsis void skb_tailroom_reserve(struct sk_buff *skb, unsigned int mtu, unsigned int needed_tailroom); Arguments skb buffer to alter mtu maximum amount of headlen permitted needed_tailroom minimum amount of reserved_tailroom Description Set reserved_tailroom so that headlen can be as large as possible but not larger than mtu and tailroom cannot be smaller than needed_tailroom….